Request for Proposal (RFP) For Purchase of Direct Metal ... · Direct Metal Laser Sintering is also known as Selective Laser Sintering, Selective Laser Melting, Direct Metal Laser

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Request for Proposal (RFP)

For Purchase of

Direct Metal LASER Sintering (DMLS) Machine

Space Applications Centre (SAC)

Indian Space Research Organization

(ISRO)

Ahmedabad- 380015

India

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This document contains proprietary information of SAC/ISRO, Ahmadabad. Unauthorized copy or

reproduction of this document in whole or in part without the prior written consent of SAC/ISRO is

strictly forbidden.

SAC/ISRO reserves the right to alter this information at any time without notice.

Abbreviations/Definitions:

RFP - Request for Proposal

SAC - Space Applications Centre

ISRO - Indian Space Research Organization

Purchaser - Space Applications Centre

Bidder - The Firm which is participating in Bid

Vendor - The Firm on whom order is placed

OEM - Original Equipment Manufacturer

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Table of Contents 1. Introduction .......................................................................................................................................... 2

2. Build Method ........................................................................................................................................ 2

3. Build Envelope ...................................................................................................................................... 2

4. Build Plate ............................................................................................................................................. 2

5. Build Parameters .................................................................................................................................. 3

6. Machine Capabilities ............................................................................................................................ 3

7. Material Powder .................................................................................................................................. 3

8. Ambient Operating Conditions ............................................................................................................ 4

9. Job Handling ......................................................................................................................................... 4

10. Vacuum Cleaner..…………………………………………………………………………………………………………………………….4

11. Optic System ......................................................................................................................................... 4

12. Powder Handling System ..................................................................................................................... 5

13. Software Provisions .............................................................................................................................. 5

14. Desk Top Computer .............................................................................................................................. 5

15. Post Processing Equipment .................................................................................................................. 5

16. Requisite Accessories ........................................................................................................................... 5

17. Power Supply ........................................................................................................................................ 6

18. Safety Features ..................................................................................................................................... 6

19. Pre-dispatch Inspection / Clearance .................................................................................................... 6

20. Delivery, Installation, Commissioning and Operationalization .......................................................... 7

21. Documentation ..................................................................................................................................... 7

22. Warranty ............................................................................................................................................... 7

23. Annual Maintenance Contract ............................................................................................................. 7

24. Post delivery Service and Installation Details………………………………………………………………………………. 8

25. Training .................................................................................................................................................. 8

26. Onsite Technical support………………………………………………………………………………………………………………….9

27. Spares..................................................................................................................................................... 9

28. General Instructions .............................................................................................................................. 9

29. Terms and Conditions ........................................................................................................................... 9

30. Technical and Commercial Bid ........................................................................................................... 10

31. Pre-Bid meeting……………………………………………………………………………………………………………………………..11

List of Deliverables……………………………………………………………………………………………………………………………… 12

ANNEXURE - I .............................................................................................................................................. 13

ANNEXURE - II………………………………………………………………………………………………………………………………………..20

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1. Introduction

Space Applications Centre (SAC/ISRO) is currently engaged in the development of various

projects for communication, navigation and remote sensing applications. For development of

these projects, various components are required to undergo 3D printing/ Rapid prototyping

processes.

SAC intends to procure, Direct Metal Laser Sintering Machine which should fulfill all

requirements/specifications given in this document. Direct Metal Laser Sintering is also known

as Selective Laser Sintering, Selective Laser Melting, Direct Metal Laser Melting etc.

The machine should have following specifications

1.1. Direct Metal Laser Sintering Machine for Metals of latest specifications as per RFP to deliver

metal parts directly from CAD models in powders of Al Alloy, Titanium, Stainless steel, etc.

1.2. The process should be able to sinter/ melt metal powders using laser and should be free

from nonmetallic binder

1.3. Machine should have options to run with both reactive (Al Alloy, Titanium etc.) and non-

reactive material (SS, Inconel, Monel etc.).

1.4. Machine should have safety against laser hazard.

1.5. Machine should be able to process

Al. Alloy (AlSi10Mg and other Al Alloy powders)

Titanium Alloy (TiAl6V4 and other Titanium powders)

1.6. For reducing residual stresses, there should be provision for pre heating of build platform

up to 200°C.

1.7. Quality assurance, Powder bed modules and the hardware which are required for metal

sintering is to be provided by the manufacturer for quality assurance of the process and

parts.

Quality assurance module shall provide information on quality related information like

selected building parameters, interruptions and variations from ideal process

conditions, etc.

Power Bed module shall have ability to

o Monitor the placement of powder after every layer

o Analyze individual images of each layer etc.

2. Build Method

2.1. Metallic part building through layered manufacturing directly from tessellated 3D CAD

model file by means of metallic particle melting, sintering or fusion through high power

laser

2.2. Machine should be able to operate in both Argon and nitrogen modes.

3. Build Envelope

Minimum Build volume: 380 mm x 350mm x 350 mm (excluding build platform thickness)

Machine should be able to print single job of size equal to build volume i.e. single job size that

can be printed should be 380mm x 350mm x 350mm.

4. Build Plate

Separate Build plates should be quoted for three different materials, i.e., Al. Alloy, Titanium

Alloy, Stainless steel, Qty. 2each, i.e.2x3=6 build plates as per the size of the machine.

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5. Build Parameters

5.1. Free editable parameters should be provided where the layer thickness should be

editable from 20 to 70 microns for all the materials mentioned in para 1.5.

5.2. Build Volume rate

Following should be the build volume rate according to the materials

Material powder Maximum Build Rate cm3/hr.

Al. Alloy (AlSi10Mg and other Al powders) 60 or more Titanium Alloy (TiAl6V4 and other Titanium powder) 50 or more

5.3. Dimensional accuracy of part produced should be ±50microns or better over a length of

100mm and ±100microns or better over a length of 250mm.

5.4. Machine should be capable to build parts having minimum wall thickness/diameter of

0.3mm or less. (Aspect ratio of wall thickness to height should be 1:6)

5.5. Surface roughness as built after cleaning of build part should be in range of 5-10µm

5.6. The machine should be able to work continuously in unattended mode.

5.7. Online power source monitoring and real time inspection of build process

5.8. Scanning speed/Exposure editor speed should be 7m/s or higher

5.9. Re coater should be bi-directional to have higher productivity

5.10. There should be a Nitrogen generator with the machine and provision for supply of Argon

externally.

5.11. As we are going to use this machine for three different metals, 3 sieving module, 3

extraction module and 3 filling modules should be offered. Any other arrangement for

handling powders of three different materials can be offered.

6. Machine Capabilities

6.1. Machine should be capable of running with materials as mentioned in para 1.5 and any

other suitable material for space applications.

6.2. Suitable parameter editor package in order to optimize part results should be provided

for materials mentioned in para 1.5.

6.3. After installation of the machine at SAC, vendor should establish parameters for building

parts from INVAR-36 material at the earliest. INVAR-36 Powder will be provided by SAC.

7. Material Powder:

7.1. Vendor should quote for following powders. Variation in quantity due to packing size will

be acceptable.

AlSi10Mg (800 Kg) (powder should be suitable for preheating with build plate up to

200°C)

Titanium Alloy TiAl6V4 (150 Kg)

7.2. Data Sheet:

Vendor should provide material technical “Data sheet” for the above materials along with the

offer. Name of the powder manufacturer should be mentioned in the offer. All the offered

material should be approved with respective ASTM standards.

The material Data Sheet should contain average grain size, physical and mechanical properties

mentioned in para 7.3, chemical composition, etc. Vendor should provide MIL or equivalent

certificate for the powder and also the batch traceability of the powder supplied.

7.3. Mechanical and Physical Properties as built

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Material/ Property

Tensile strength MPa

Yield strength MPa

% Elongation

Modulus of elasticity GPa

Hardness HRB

Density gm/cc

Thermal Conductivity W/m°C

AlSi10Mg ≥ 385 ≥210 7±2

≥60 65±5 2.70±0.27

100-120

Ti6Al4V ≥1150 ≥1015 9±3

≥100 110±5 4.40±0.3 6-8

Minor variation in above parameters will be acceptable. Other than above if vendor is having

any specific technical data which is relevant to space components to be provided with

appropriate standard reference preferably MIL.

8. Ambient Operating Conditions

8.1. Temperature range: 10°C to 30°C

8.2. Relative humidity range: 30% to 80% (non-condensing).

9. Job Handling

A suitable battery operated Fork Lift or conveying system should be offered for handling the

printed part along with the build plate.

10. Vacuum Cleaner

Suitable vacuum cleaner should be offered with the machine for sucking metal powders from

process chamber.

11. Optics System

Machine should have system capable of directing laser beam with the aid of optic, beam

expander, scanner mirror / focusing lens etc. For cooling the laser, a water/gas cooling system

should be provided along with the system.

11.1. Laser source

Laser should meet following specifications:

Single Laser source of 1kW or Twin/Quad Laser source of power greater or equal to 400

W each with stitching capability. If the machine is offered with Twin/Quad laser source,

it should be able to build the single part of 380 mm x 350 mm x 350 mm size without

compromising any material properties in the stitched areas.

Laser power measurement and laser power monitoring system should be included.

11.2. Scanner

The scanner provided in the machine should be able to scan the complete build volume

and should be automatic.

There should be a mechanism/sensor, to correct any scanner drift at regular intervals to

provide positional stability of the laser beam under varying environmental conditions and

thermal load due to long exposure times or for large building jobs.

Min. Exposure area from fixed position should be complete build volume.

11.3. Focusing lens

F-Theta lens or 3D optics or any other advance technology that focuses the beam on a

flat plane and should have a window with provision for dirt cleaning.

Focus diameter less than or equal to 100 µm.

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12. Powder Handling System

Machine should have suitable automatic mechanism to recollect the unused powder.

13. Software Provisions

SAC, ISRO already have Magics software with SG+. The quoted DMLS machine should be

compatible with this software.

14. Desktop Computer

It is necessary to prepare CAD data before prototyping. For this data preparation PC is

required. The equipment should satisfy the following specifications. However, the

configuration with better specifications is acceptable.

14.1. Processor:2 * Intel Xeon E5-2690v3 2.6 2133, equivalent or higher processors

14.2. Chipset: Intel C612 chipset, equivalent or better

14.3. Operating System: Genuine Windows 7/8/8.1/10 professional, 64 Bit with multicore

processing capabilities and x64-based processor.

14.4. RAM: 128 GB memory(4x32GB) Load Reduced Registered RAM upgradeable to minimum 256GB with minimum 8 slot; all slots should be on motherboard itself.

14.5. Drive controllers: Onboard 6Gbps SATA 14.6. Hard Disk: 5TB SSD Drive or higher 14.7. Optical drive: DVD writer 14.8. Graphics card: NVIDIA Quadro K5200 8GB graphics card or equivalent 14.9. Monitor: Minimum 30" IPS DISPLAY WITH FOLLOWING SPECS: S-IPS technology; 2560 X

1600 resolution or better @60HZ, Brightness 300 cd/m2, up to 178° horizontal/178° vertical (10:1 minimum contrast ratio), contrast ratio -1000:1, 7 ms (gray to gray); 12 ms (on/off), Color support -1.07 billion colors

14.10. Slots: Minimum 1 PCIe x8 Gen 3, 1 PCIe x1 Gen 2, 1 PCIe x4 Gen 2, 1 PCI Slot; 2 PCIe x16 Gen 3 Slots

14.11. Ports: Front: 4 USB 3.0; 1 headset; 1 microphone Back: 4 USB 3.0; 2 USB 2.0; 2 PS/2; 1 RJ-45; 1 audio line in; 1 audio line out Internal: 1 USB 2.0; 1 USB 3.0

14.12. Network: Gigabit port on the motherboard, Wireless LAN, Blue Tooth 2.1. 14.13. Speakers: Built in speakers 14.14. Keyboard and mouse: Minimum 104 keys USB Keyboard and USB Optical Scroll mouse -

Same make as that of the workstation 14.15. Additional software

The hardware vendor should supply an automatic system performance tuning and monitoring software on Windows.

A complete Offline Diagnostics and Asset Discovery software suite should be supplied along with the system.

14.16. Warranty: 2years’ onsite parts and labor warranty for system and monitor

15. Post Processing Equipment

Micro peening system suitable for largest job that can be built on the offered machine should

be offered.

16. Requisite Accessories

Following accessories should be offered along with the machine.

16.1. Cleaning kits for optics and other sub systems

16.2. Chiller unit for laser source

16.3. Clamping systems for firm holding of build plate

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16.4. Re-coater assembly / blades Qty. 10

16.5. Annealing furnace

* with automatic provision for inert gas purging and monitoring O2 level

* should be able to accommodate part/build plate of size 425mm x 425mm x 425mm

* should be able to heat the component up to 1100°C

* should support automatic operation for given heating cycle with required ramp up rate,

ramp down rate and soaking time

16.6. Nitrogen gas generator if it is not inbuilt in the machine.

16.7. Powder re-cycling/sieving system, one for each powder

16.8. Powder conveying system

16.9. Powder filling system

16.10. Vacuum cleaner

16.11. Integrated glove box system for easy removal and set up.

16.12. Laminar gas flow management system.

16.13. Filters should be provided along with the systems

Cartridge filter (15 Nos. Qty.)

Suspended particle filter (10 Nos. Qty.)

16.14. UPS with 30-minute backup time to run the DMLS Machine

Above list is indicative only. Any accessories other than above which are required for smooth

running of DMLS machine or post processing of jobs for the period of two years should also

be quoted. If any of the above accessories are not required for the smooth functioning of the

system, may be omitted and if other additional accessories are required may be mentioned.

17. Power Supply

Machine and other auxiliary equipment should work on 3-phase AC power supply of 415 V, 50

Hz or Single phase AC power of 230 V, 50 Hz. If machine offered does not work on 415 V / 230

V, bidder shall supply required step up/step down transformer along with the machine free of

cost as a part of machine.

18. Safety Features

For safe operations of the machine, the following safety features should be at least provided

in the system

18.1. Door locking security

18.2. Safety against laser beam exposure

18.3. There should be mechanism to ensure that, powder should not overflow when we pour

metal powder in powder dispenser.

18.4. Non-contact powder handling.

18.5. Automatic O2 monitoring inside the process chamber. This is required while processing

reactive materials so as to interrupt the building process when O2 level exceeds the

defined level.

Any other safety features which vendor thinks will be required for smooth running of DMLS

machine may be listed

19. Pre-dispatch Inspection / Clearance

SAC engineers shall visit manufacturer plant for pre-dispatch inspection. Following activities

should be carried out during pre-dispatch inspection.

19.1. Demonstration and certification of all the specifications mentioned in the offer.

Fabrication of following in presence of SAC engineers from AlSi10Mg (powder should

be suitable for preheating with build plate up to 200°C)

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19.2.

Tensile test specimens (15 Nos.) in different orientation as per DIN 50125 Type A. If

vendor offers a twin/quad laser machine, the stitching zone should be in the middle

of gauge length of the tensile test specimen, so as to ensure the stitching capability

without any change in properties of material in the stitching zone.

Density cubes (9 Nos.).

Demo job as per drawing No. “ISRO-SAC-DMLS-Feed-01”, Annexure-II

19.3. Measurement of tensile strength, yield strength, modulus of elasticity, percentage

elongation at break, and density. The values of these properties should be in

conformance with the material “Data Sheet”.

19.4. Measurement of roughness on density cubes.

19.5. Measurement of dimensional accuracy and surface roughness on Demo job as per

drawing No. “ISRO-SAC-DMLS-Feed-01”, Annexure-II

19.6. Furnish “Data Sheet” of materials used for building the items mentioned in para 19.2.

20. Delivery, Installation, Commissioning and Operationalization

20.1. Delivery time of the machine should be maximum 9 months after placement of Purchase

order.

20.2. Vendor should specify overall dimensions of the machine offered and show schematically

how much area is required to install a machine in all three dimensions with the essential

accessories.

20.3. Clear documentation on the site requirements and site needs should be provided by the

manufacturer.

20.4. Vendor has to carry out Installation and commissioning of the machine at SAC.

20.5. After installation and commissioning of the machine at SAC, tests mentioned in pre-

dispatch inspection under para 19 should be repeated.

21. Documentation

The following detailed documentation in English (2 hard copies each) is to be supplied along

with the system.

21.1. Operation Manual

21.2. Software Instruction Manual

21.3. Material Handling equipment manual

21.4. Maintenance, troubleshooting, including electrical diagram & mechanical drawings and

safety manuals

21.5. Training Manual

21.6. Installation and commissioning Manual

21.7. Manual for handling of accessories.

For the installation and commissioning of the machine documents need to be sent by Airmail

/ speed mail, quite in advance for our study and readiness for installation and commissioning.

22. Warranty

The complete machine and all other standard / optional accessories / attachments must be

warranted for free repairs and replacements for a period of 24 months from the date of

installation and commissioning. During this period, if any part is found defective, the same

shall be repaired / replaced by the manufacturer free of cost. All the services required for

maintenance of the machine should be provided free of cost during the warranty period.

23. Annual Maintenance Contract

The vendor should quote for comprehensive maintenance contract for the period of three

years after completion of warranty period. Vendor should give separate quotation for each

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year. Comprehensive maintenance contract should include cost of services as well as spares.

Vendor should also give schedule of preventive maintenance in their offer. During the period

of contract vendor should respond to breakdown within 72 hours of reporting. Vendor should

also mention payment schedule for AMC along with their offer. SAC will decide to take AMC

or not at its discretion. Decision will be based on the reasonability of price offered.

24. Post delivery Service and Installation Details

Manufacturer will give undertaking on their letter head that they will supply all required

spares and service the equipment for at least 10 years after installation of the machine.

Manufacturer should have sufficient factory trained service engineers in India to attend

any problem within 72 hours. The details of these service engineers should be provided

along with the offer.

OEM or its representative should have office in INDIA.

Manufacturer should have sold at least three DMLS machines in India and should be in

operation at present. The vendor shall give the details of the working systems that are

supplied by them in organizations as per the following table

Sr. No. Firm Name and Full Address with contact person name, phone and email where system is installed.

Products being prototyped

1

2

3

SAC reserves the right to get feedback from customer.

25. Training

Training should be provided at SAC at the time of installation and acceptance test. There

should not be any restriction on number of persons to be trained. However, training shall be

restricted to one batch of few persons. All the training instructions have to be in English only.

Duration of training should be adequate for SAC operator to understand and operate machine

independently.

25.1. Basic training**: The manufacturer should provide basic training on the machine. Basic

training shall include

Basic principles of the technology

Introduction to various parts of machine

Machine operation

Handling the accessories

Process depiction and control

Data preparation

Part preparation

Finishing the parts

Troubleshooting for Machine- electrical, electronic and mechanical etc.

25.2. Advanced training**: 3 months after the basic training the manufacturer should provide

5 days or more of advanced training.

The training program should cover all the operational aspects of machine and

software.

Training should cover topics related to laser power measurement, routine system

maintenance and material changing procedures etc.

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Training should also cover topics related to parameter editing and generating

optimum parameters for material specified in para 1.5.

** Points above are indicative only, any other required training subject may be included

26. On-site Technical Support

After installation, commissioning and basic training of the machine vendor has to depute one

or two persons for on-line technical support for the period of one year. Deputed persons

should be stationed at SAC, Ahmedabad during the working hours and should be competent

to do following

Determine suitability of components of DMLS

Suggest designs modifications to make the part suitable for DMLS

Establishing parameters for materials specified in para 1.5

Deciding orientation of job and supports for building the job successfully using magics

software

Guide in handling of the metal powders

Post processing of job which include Heat treatment, shot peening, etc.

Guide technicians in operating the machine

Transferring know how related to above points to SAC staff

Payment for Technical support will be made at the end of each month based on

certification by divisional head about satisfactory services.

This should be quoted separately under distinct head.

27. Spares

The Vendor should quote under a distinct head, all the standard spares for two years of operation post warranty period. Vendor should provide List of spares stocked in India.

28. General Instructions

28.1. Only those Bidders, who are confident of getting export permission to supply the machine

to SAC/ISRO, should quote.

28.2. Un-priced commercial bid should be attached with the technical bid.

28.3. All the literature is required to be in English Language.

28.4. Bidder should offer detailed technical catalogue of the machine and write up for

highlighting special features, specific applications, attachments etc.

29. Terms and Conditions

29.1. The Bidder should recommend and offer all the accessories and attachments which are

essential for smooth functioning and accurate and reliable performance of the machine.

Make, model and detailed technical specifications along with photocopy of catalogue for

each and every accessory should be attached in the offer. Offer for each and every item

should be given separately.

29.2. Bidder should offer essential spare parts (Mechanical / Electrical / Electronics) for

trouble free operations and maintenance for at least 2 years and quote for each item

separately. Name of all the spares must be in the English language only. Little description

about location and use of the spare should also be given.

29.3. In addition, the Bidder should also offer specifically the essential control cards, electronic

components; filters, etc., in view of long term requirements.

29.4. Bidder should fill up details against each of the requirements of the compliance

statement (Annexure-I) sent along with this tender document. Silence on any point shall

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be treated as non-compliance. Simple compliance without details, lack of information

or information without proper explanation shall also be treated as non-compliance.

Hence, in order to strengthen the merit of offer, please provide detailed explanation

about how bidder intends to comply with each and every specification of this tender.

This is an essential part of the offer. Offer without detailed compliance report shall be

treated as incomplete and liable for rejection without assigning any reason thereof.

29.5. Bidder should give competitive bid with the minimum delivery period from the date of

letter of intent or placement of purchase order (PO) by SAC, whichever is earlier and

should be adhered to.

29.6. The Bidder, if necessary, should recommend and detail out in their offer, any specific

requirement like compressed air requirement, foundation of machine, controlled

environmental conditions etc. for the specific performance of the machine.

29.7. It will be the sole responsibility of Bidder to carry out electrical connections from main switch to stabilizer and stabilizer to machine. Necessary cables and tools should be brought by Bidder.

29.8. The machine quoted should be of OEM make from reputed companies/brand and the

tender should clearly indicate the brand, make and model details. In case of authorized

dealers/Indian representatives, they should furnish the valid authorization certificate

from their principals.

29.9. Bidder will also confirm / commit in their offer for the following.

The Bidder should furnish detailed information regarding number of crates required for

dispatching the machine along with size and weight of each crate in the offer itself.

Electric circuit diagram of the machine should be supplied with the machine in English

language.

Drawings of the important mechanical assemblies should be supplied for the

maintenance purpose.

Machine should be brand new and OEM authorized. Refurbished machine is not

allowed.

30. Technical and Commercial Bid

Bids should be sent against this RFP in two parts and it has to be done according to SAC e-

tendering

Part 1 should consist of “Technical + unpriced commercial bid”.

Part 2 should consist “Commercial bid with prices”.

Both part should be quote by uploading the data through internet on E-procurement

Portal; https://eprocure.isro.gov.in for Electronic Government Procurement System

(EGPS)

30.1. Instruction for Technical Bid (Part 1)

Bidders shall submit technical bid with following details

Quote will become invalid if prices are included in the technical bid.

It should be clearly understood by bidder that there should not be any information related to prices for Machine/ any component/ Auxiliaries/ Accessories/ Attachments/ Recommended Spares/ Optional accessories / Optional items / attachments/ AMC/ extended guarantee/warranty/ any other charges/any type of discounts etc. in Technical Bid (Part-I).

Point by point compliance to all points as per sample given in Annexure I

The bidder is advised to give Page numbers to all papers / Brochures provided in the offer. This is to ensure all the papers are in place.

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Bidder shall give the list of all the papers/documents (soft and hard copies) etc. in the Index table as per the sample format given below:

Sr. No. Description Page No.

1

2

3

:

Copy of commercial bid without prices shall be provided along with the technical bid also as under. Sample format shown below.

Sr No

Item Description, Make and Model / Product code

Qty Unit cost Total Cost

Remark

1.

LEA

VE

BLA

NK

LEA

VE

BLA

NK

2.

3.

4.

5.

6.

7.

8.

:

Total Cost

30.2. Instructions for Commercial Bid (Part 2)

Cost break-up for each & every deliverable items shall be given as per Sample format shown below.

A sample format for commercial bid:

Sr. No

Item Description, Make and Model / Product code

Qty Unit cost Total Cost

Remark

1.

2.

3.

4.

5.

:

Total Cost

31. Pre-Bid meeting:

Pre-bid meeting will be held on the date mentioned in the tender publication. The vendor

can attend the same to get any clarification on tender specifications.

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List of Deliverables, as per RFP

Sl. No. Equipment name Qty.

1. Brand New and non-refurbished Direct Metal LASER Sintering (DMLS) Machine

1

2. Build plates 2x3 = 6

3. Sieving module 1x3 = 3

4. Nitrogen generator (If not in-built in the machine) 1

5. Chiller 1

6. Desktop Computer 1

7. Material Powders

7.1. AlSi10Mg (powder should be suitable for preheating with build plate up to 200°C)

800Kg

7.2. Titanium Alloy Ti6Al4V 150Kg

8. Suitable high quality Vacuum cleaner 1

9. Micro peening system 1

10. Suitable Fork lift 1

11. Cleaning kits for optics and other sub systems 1 set

12. Chiller unit 1

13. Clamping systems for firm holding of build plate

1 set

14. Bi directional Re-coater assembly blades 10 nos.

15. Annealing Furnace 1

16. Power recycling system/ sieving system one for each powder 1x3 = 3

17. Powder conveying system 1x3 = 3

18. Glove box 1 pair

19. Filters

19.1. Cartridge filter 15 nos.

19.2. Suspended particle filter 10 nos.

20. UPS with 30-minute backup time to run the DMLS Machine

1 nos.

21. All documents mentioned in para 21 2 set each

22. Spares as per para 27 Separate sheet should be attached

Note: List of deliverables is indicative only any other deliverables required for

smooth operation of the machine may be added to above list.

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ANNEXURE - I Compliance statement

Also mention page numbers in the report/brochure to verify the compliance of a particular points.

Sr. as per tech. specs

SAC, ISRO specification Compliance What Bidder should write under

Compliance column.

Page No./ Report/Brochure

No.

1. Introduction Para 1.1 to 1.7

Understood, yes/no

2. Build method Please specify

3. Build envelope (excluding built platform thickness) 380mm x 350mm x 350mm

Write numerical value

4. Build Plates for three different materials

Yes/no

5. Build Parameters

5.1. Free editable parameters should be provided where the layer thickness should be editable from 20 to 70 microns for all the materials mentioned in para 1.5.

Yes/no

5.2. Maximum Build volume rate (cm3/hr.)

5.2.1. Al. Alloy (AlSi10Mg and other Al powders)


5.2.2. Titanium Alloy (TiAl6V4 and other Titanium powder)


5.3. Dimensional accuracy of part produced should be ±50microns or better over a length of 100mm and ±100microns or better over a length of 250mm

Yes/No

5.4. Machine should be capable to build parts having minimum wall thickness/diameter of 0.3mm or less. (Aspect ratio of wall thickness to height should be 1:6)

Yes/No

5.5. Surface roughness as built after cleaning of build part should be in range of 5-10µm

Yes/No

5.6. The machine should be able to work continuously in unattended mode.

Yes/No

5.7. Online power source monitoring and real time inspection of build process

Yes/No

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Compliance column.


No.

5.8. Scanning speed/Exposure editor speed should be 7m/s or higher


5.9. Bi-directional re coater Yes/No

5.10. Nitrogen generator and provision for Argon supply

Yes/No

5.11. 3 sieving module, 3 extraction module and 3 filling modules should be offered. Any other arrangement for handling powders of three different materials can be offered.

Yes/No

6. Machine capabilities:

6.1. Machine should be capable of running with materials as mentioned in para 1.5.

Yes/No

6.2. Suitable parameter editor package in order to optimize part results should be provided for materials mentioned in para 1.5.

Yes/No

6.3. After installation of the machine at SAC, vendor should establish parameters for building parts from INVAR-36 material at the earliest. INVAR-36 Powder will be provided by SAC.

Yes/No

7. Have you offered Material powders along with Data Sheets and Mechanical and Physical properties as per Para 7.1 to 7.3

Yes/No

8. Ambient operating conditions as per para 8.1 to 8.2

Agree/Disagree

9. Have you offered Job Handling system?

Yes/No Give details

10. Have you offered Vacuum Cleaner ?

Yes/No

11. Optics System

11.1. Laser Source

Single Laser source of 1kW or Twin/Quad Laser source of power greater or equal to 400 W each with stitching capability

(Write number and power of laser sources and confirm stitching capability).

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Compliance column.


No.

Laser power measurement and laser powder monitoring system should be included

Yes/No

11.2. Scanner as per para 11.2 Yes/No

11.3. Focusing lens as per para 11.3 Write name of technology used and value of focus diameter

12. Powder Handling system Offered

Yes/No (Give narration of system)

13. machine Should be compatible with magics software with SG+

Agree/Disagree

14. Desktop Computer as per Para 14.1 to 14.16

Yes/No

15. Post processing equipment Micro peening system.

Yes/No

16. Requisite accessories

16.1. Cleaning kits for optics and other sub systems

Offered/Not offered

16.2. Chiller unit for lasers source Offered/Not offered

16.3. Clamping systems for firm holding of the build plate

Offered/Not offered

16.4. Re- coater assembly / blades Qty. 10

Offered/Not offered

16.5. Annealing furnace Offered/Not offered

16.6. Nitrogen gas generator if it is not inbuilt in the machine

Offered/Not offered

16.7. Powder re-cycling/sieving system, one for each powder

Offered/Not offered

16.8. Powder conveying system Offered/Not offered

16.9. Powder filling system Offered/Not offered

16.10. Vacuum cleaner Offered/Not offered

16.11. Integrated glove box system for easy removal and set up.

Offered/Not offered

16.12. Laminar gas flow management system.

Offered/Not offered

16.13. Filters should be provided along with the systems

Offered/Not offered

Cartridge filter (Qty. 15) Offered/Not offered

Suspended filter(Qty. 10) Offered/Not offered

16.14 UPS with 30-minute backup time to run the DMLS Machine

Offered/Not offered

Above list is indicative only. Any other accessories other than above which are required for smooth running of DMLS machine or post processing of jobs for the period of two years should also be quoted.

Please mention names of accessories

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Compliance column.


No.

17. Does machine work on Power supply as per para 17?

Yes/No

18. Safety features

18.1. Door locking security Yes/No

18.2. Safety against laser beam exposure

Yes/No

18.3. There should be mechanism to ensure that, powder should not overflow when we pour metal powder in powder dispenser.

Yes/No

18.4. Non-contact powder handling Yes/No

18.5. Automatic O2 monitoring inside the process chamber

Yes/No

Any other safety features which vendor thinks will be required other than above for smooth running of DMLS machine may be listed .

Please mention names of safety features

19. Pre-dispatch Inspection/Clearance

19.1. Demonstration and certification of all the specifications mentioned in the offer.

Agree/Disagree

19.2. Fabrication of following in presence of SAC engineers from lSi10Mg (powder should be suitable for preheating with build plate up to 200°C)

Agree/Disagree

Tensile test specimens (15 Nos. in different orientation as per DIN 50125 Type A). If vendor offers a twin/quad laser machine, the stitching zone should be in the middle of gauge length of the tensile test specimen, so as to ensure the stitching capability without any change in properties of material in the stitching zone.

Agree/Disagree

Density cubes (9 Nos.) Agree/Disagree

Demo job as per drawing No.“ISRO-SAC-DMLS-Feed-01”, Annexure-II

Agree/Disagree

19.3. Measurement of tensile strength, yield strength,

Agree/Disagree

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Compliance column.


No.

modulus of elasticity, percentage elongation at break, and density using density cubes.

19.4. Measurement of roughness on density cubes.

Yes/No

19.5. Measurement of dimensional accuracy and surface roughness on Demo job as per drawing No. “ISRO-SAC-DMLS-Feed-01”, Annexure-II

Yes/No

19.6. Furnish “Data Sheet” of materials used for building the items mentioned in para 19.2.

Attached or Not (Attach separate sheet)

20. Delivery, installation and commissioning and Operationalization as per para 20.1 to 20.5

Agree/Disagree

21. Documentation

21.1. Operation Manual Yes/No

21.2. Software Instruction Manual Yes/No

21.3. Material Handling equipment manual

Yes/No

21.4. Maintenance, troubleshooting, including electrical diagram & mechanical drawings and safety manuals

Yes/No

21.5. Training manual Yes/No

21.6. Installation and commissioning manual

Yes/No

21.7. Manual for handling of accessories.

Yes/No

22. Warranty: The complete machine and all other standard / optional accessories / attachments must be warranted for free repairs and replacements for a period of 24 months from the date of installation and commissioning. During this period, if any part is found defective, the same shall be repaired / replaced by the firm free of cost. All the services required for maintenance of the machine should be provided free of cost during the warranty period.

Agree/Disagree

23. Annual Maintenance Contract Agree/Disagree

18 | P a g e



Compliance column.


No.

The vendor should quote for comprehensive maintenance contract for the period of three years after completion of warranty period. Vendor should give separate quotation for each year. Comprehensive maintenance contract should include cost of services as well as spares. Vendor should also give schedule of preventive maintenance in their offer. During the period of contract vendor should respond to breakdown within 48 hours of reporting. Vendor should also mention payment schedule for AMC along with their offer

24. Post delivery Service and Installation Details

Manufacturer will give undertaking on their letter head that they will supply all required spares and service the equipment for at least 10 years after installation of the machine.

Yes/No

Manufacturer should have sufficient factory trained service engineers in India to attend any problem within 72 hours. The details of these service engineers should be provided along with the offer.

Yes/No Provide Details

OEM or its representative should have office in INDIA.


Manufacturer should have sold at least three DMLS machines in India and should be in operation at present.


25. Training

19 | P a g e



Compliance column.


No.

25.1. Basic Training Agree/Disagree

25.2. Advanced Training Agree/Disagree

26. On-site Technical Support Agree/Disagree

27. The Vendor should quote under a distinct head, all the standard spares for two years of operation post warranty period. Vendor should provide List of spares stocked in India.

Attached or Not (Attach separate sheet)

28. Terms and conditions as per para 29.1 to 29.9

Agree/Disagree

In case of any mismatch between RFP and Compliance table, RFP para will be considered final.

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ANNEXURE-II

.stl or .xt or .stp can be provided on demand

Documents

Request for Proposal (RFP) For Purchase of Direct Metal ... · Direct Metal Laser Sintering is also known as Selective Laser Sintering, Selective Laser Melting, Direct Metal Laser