The Drive & Control Company

First selection cylinders forVertical Non Ferrous Casting

Table of contents

Content

PageIntroduction

2Application center: Metallurgy

3Technical data

3Type code

4Non ferrous casting

5Mounting style

5Existing dimensions

6Oil connections

6Ceramax Engineered Coating

7Sealing system

8Protection umbrella

8

2/15 Table of contents | IntroductionBosch Rexroth B.V.

Introduction

First selection

This brochure is intended to be an aid to designers of non ferrous casting installations to have a reliable guide for the mechanical interfacing of this type of hydraulic cylinders. Please note that your cylinder can only be produced with your correct input of the technical specification.

Bosch Rexroth

Bosch Rexroth cylinders designs, manufactures and sells hydraulic cylinders up to a bore of 1.500 mm on request. The hydraulic cylinders may have a maximum stroke length of 24.000 mm. Production of these cylinders is concentrated in The Netherlands, China and Brazil.

The Bosch Rexroth cylinders are world-wide used for:

Heavy industry

General industry & presses

Material handling & mining

Civil engineering

Offshore, marine & dredge

Special projects

Standard design modules

Different design requirements are determined per application. The key features of the different heavy industry cylinders are standardized by modular concepts. The following main modules are defined and standardized:

Cylinder body and piston rod, pressure range,

material quality

Seals and bearings

Mounting style

Electronic feedback

Manifold interface

The heavy industry cylinder range is developed for the following applications:

HC –

Continuous casting: Ladle turret lift, Rotary Joint,

Segment cylinder

HR –

Rolling mill:

Roll change, Automatic gauge control, Roll bending compensation cylinder

HN –

Non ferrous caster: Plunger cylinder

HF –

Reheat furnace: Lift cylinder, pusher cylinder

HS –

Secondary metallurgy: Ladle lift cylinder

Three in One: Hydraulic Cylinders from Bosch Rexroth

Whether you are integrating standard cylinders, branch cylinders or project cylinders into your overall concept: All standard series are highly configurable to an universal concept, thus enabling you to avoid special costly designs. Bosch Rexroth maintains actually a minimal number of standard series, preferring to concentrate on improving special features of variants instead.

These standard

cylinders have a bore up to 320 millimeters and a stroke length up to 4 meter.

With branch

cylinders highly specialized project design engineers work out customer-specific solutions: These cylinders are designed, tested and then, once ready they are series-produced in the required quantity, all in collaboration with the customer.

Something special –

that’s our strength: Bosch Rexroth develops and produces project

cylinders for project-related individual solutions. We accept virtually every challenge, realizing cylinders with piston diameters up to 1.500 millimeters and stroke lengths up to 24 meters. Of course these cylinders match perfectly with Rexroth power unit, piping and accessories.

Content

PageCIMS measuring system

9Flexible MTS for speed control

10Temposonics RH-Series

10Deflection calculation

11Rotation

11Stick slip simulation

12Inquiry list

13 -

15General data

13Technical data

14Additional data for non ferrous casting

15

Bosch Rexroth B.V. 3/15Application

center: Metallurgy

| Technical

data

Technical data for Non Ferrous Caster

Standards:

The installation dimensions of the cylinders and mounting styles meet the requirements of the application based standard.

Pressure fluid / pressure fluid temperature range:

HLP, HFD-R

Other fluids on request.

Temperature of environment min. 0 ˚C to max. +70 ˚C

ISO Cleanliness class

Advise is maximum degree of pressure fluid contamination to ISO 4406 (c) class 16/13 (NAS 7).

Coating:

The cylinder is working fully submerged. Bosch Rexroth has special coatings to protect the cylinder against under water environment. This applies to the rod (C.E.C.) as well as the shell (underwater coating).

Acceptance:

Each cylinder is tested to Bosch Rexroth

standards. All non ferrous casting cylinders are tested including the accuracy of the anti-rotation device.

Application center: Metallurgy

Drive System Integration

With the Bosch Rexroth application center department in Lohr

am Main, Germany, all the integrated drive system know how concerning heavy industry applications is available. The application center advises in complete drive packages consisting of: cylinders, power packs, gear boxes, controls, piping and installation & commissioning.

Producers within Bosch Rexroth and affiliated companies

benefit from this expertise with the application center.

Design of drive & control solutions to supply the complete equipment for safe and optimized life cycle costs.

Application center Metallurgy:

Aluminum casters

Continuous casters

Rolling mills

Secondary metallurgy

Your benefit of Application center

Complete Drive & Control system in one hand

System responsibility at Bosch Rexroth

First class products and systems

Technology leadership

Integrated solution

Concentration on “Core Business”

Prevent over-dimensioning

Specialized maintenance

Cylinders Power Units Valve blocks Controls Piping Commissioning

Customer

Bosch Rexroth Application Center

Type code

The following table shows the type code, which creates the non ferrous casting cylinder for vertical casting.Each field stands for a specification. These specifications are explained on the following pages.

For further questions, do not hesitate to ask your Bosch Rexroth country unit.

Field 1

Type denominationCY

Cylinders with a single rod

Field 2

Application codes (page 5)HNP

Plunger cylinder internally guidedHNG*

Double acting cylinder externally guided

* This document is for the HNP type and will not describe the cylinders for vertical casters with external guidance.

Field 3

External mounting shell side (page 5)ME7

Front flange

Field 4

Bore dimension (page 6)Bore between 380 mm and 620 mm

Field 5

Rod dimension (page 6)Rod between 320 mm and 560 mm

Field 6

Stroke dimensionStroke length on request depending on your product.

Field 7

Cylinder constructionB

Bolted head and welded bottom

Field 8

Revision index10

Field 9

Oil connections rod side (page 6)D

SAE flange (6.000 PSI)

* Also there is no misalignment between the cylinder centreline and the external guiding.

Field 10

Position oil connections (page 6)1

0 degrees2

90 degrees3

180 degrees4

270 degrees

Field 11

Piston rod surface (page 7)C

Hard chromium platedN

Nickel and hard chromium platedQ

Ceramax

Engineered Coating 2.0R

Ceramax

Engineered Coating 2.2

Field 12

Mounting rod side (page 5)X

Other connection: Spigot with threaded holes.

Field 13

CushioningU

No cushioning

Field 14

Sealing system (page 8)T

Low friction seal

Field 15

Position sensor system (option 1)C

CIMS (page 9)T

Other position sensor (page 10)W

No option

Field 16

Option 2W

No option

Field 17

Country codeN

Netherlands

2

1

3

4

Field 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Type CY ME7 / / / B 10 / X U T NOrderingcode

4/15 Type codeBosch Rexroth B.V.

Bosch Rexroth B.V. 5/15Non ferrous casting | Mounting style

Non ferrous casting

The principle

For vertical non ferrous casting, it is important to stabilize the table where all casts will be created. This table is lowered by a hydraulic cylinder. The table can have external guiding or internal guiding by the cylinder.

Type I: External guiding is done by adding a extra frame, which stabilizes the table to avoid bending and rotation. External guidance makes it difficult to manage a stick-slip free movement and needs more maintenance. Also the guiding can easily damaged or wear which causes down time in the vertical caster. Older systems use cables in stead of a cylinder requiring even more maintenance.

Type II: Without the external guidance, the hydraulic cylinder must take over the guiding function to ensure linear movement of the casting table. This hydraulic cylinder can easily manage a stick-slip free movement and the cylinder is easy to maintain.

To ensure a high quality billet the cylinder guiding must have extreme accuracy, even in extended position and under eccentric load cases.

Cylinders for non ferrous casting

Bosch Rexroth translates the field experience into an application based standard which ensures the user a fit for purpose product. In our application based design we take care of the following phenomena continuous operation, underwater use, extreme accurate internal guiding, long stroke, anti stick slip, avoid table rotation, avoid seal damage, position control, hydraulic system integration and controls.

Every Bosch Rexroth hydraulic cylinder for non ferrous casting is a special design for the (end) customer and application demands. Bosch Rexroth installs complete hydraulic systems for non ferrous casting in close cooperation with our clients all over the world.

Advantages internal guided non ferrous casting

Protected against external damage and contamination.

Very little maintenance and down time.

No misalignment between guiding pit and cylinder.

Virtually no wear in guiding.

Type IExternal guided

Type IIInternal guided

Mounting style

To install the cylinder in the casting pit, the cylinder will be

mounted with a front flange.

The front flange is perpendicular to the bore and the spigot is concentric.

To assemble the cylinder perfectly vertical a reference surface should be created in the pit below the front flange. This surface must create a perfect horizontal plain for the front flange of the cylinder. Secondly this support must be sufficient stiff.

Mounting style ME7

Fixes cylinder against movement and rotation in all directions in order to have a stable casting process.

Protection rail for internal anti rotation

Lifting lugs for installation in pit

Spigot for casting table

Front flange

SAE Flange code 62

Rod side:

Size 1”

(example)(6.000 PSI)

6/15 Existing

dimensions

| Oil connectionsBosch Rexroth B.V.

Existing dimensions

Please use the following table to have the first indication of the sizes of a typical non ferrous vertical casting cylinder. This list is generated out of references which are delivered by Bosch Rexroth in the past and are operating in a vertical caster.For the bending in a cylinder the plunger diameter is the most important figure.

Above list is the first indication. The cylinder will always be calculated after contact with Bosch Rexroth Boxtel (The Netherlands) and after input of the information required in

the inquiry list.

Oil connections

Bosch Rexroth standard connection is SAE connection code 62 (6.000 psi) according to SAE J518.

Compact flange types have an advantage, because they provide the least chance for interference of the connection with the pitch circles for head and bottom.This connection is also one of the most reliable types in your application.The advantage of SAE connections is that the oil channel fits in between the bolts of the connection. This enables it to build the pipes very close to the cylinder using knee blocks.

Bore Plunger Stroke Measuring system

Ø mm Ø mm mm CIMS / MTS

380 320 7.000

380 320 8.000

400 350 6.300

440 380 6.500

440 380 6.800

440 380 7.800 CIMS

500 450 8.000

500 450 10.000 CIMS

520 320 7.000 MTS

530 480 5.600

530 480 5.600

550 500 8.500

570 520 7.850

570 520 8.500 CIMS

580 380 7.000 MTS

620 570 6.500

Full non ferrous vertical casting cylinder with front flange.Stroke: 8.000 mm

Ceramax Engineered Coating

As world market leader in design and manufacturing of customized hydraulic cylinders, Bosch Rexroth is a prominent pioneer in the field of piston rod protection.With the introduction of Ceramax to the market in 1989, Bosch Rexroth set a new global standard for piston rod coatings. With Ceramax an inherent corrosion problem in the application of hydraulic cylinders in different applications

was solved. Ceramax has clearly proven its excellence as a universal rod coating. Since the introduction in 1989, over 14.000 hydraulic cylinders with Ceramax rod coatings have been in operation in a wide range of demanding applications.

Continuous improvementThe urge to create added value for our customers is the basis for a continuous improvement of our products. These improvements range from specific product features to rod coatings and alternative materials. As a result new coating processes were developed which allows to fine-tune the layer to the specific application demands.These varying from general industrial applications to severe applications requiring high wear and impact resistance in combinations with exceptional corrosion and chemical resistance.

Ceramax Engineered CoatingAs a logical development to the original introduced applicable Ceramax coating, Bosch Rexroth introduced, on the Hannover fair of April 2001, a full range of coatings; “Ceramax Engineered Coatings”

(CEC). This range of coatings consists of metal-matrix based coatings (CEC 2.x range). To apply these layers the Plasma spraying process, the HVOF (High Velocity Oxygen Fuel) spraying process or a combination of the two is used.The HVOF technology uses a lower temperature range in combination with a high velocity, allowing the application of a metal matrix.This new range of coatings opens the possibility to engineer the coating to the specific application demands. All CEC coatings can be used as a basis for the Bosch Rexroth position measuring system CIMS.

CEC 2.xRod coating for extreme corrosive, abrasive and saline conditions, protection against exposure to aggressive chemicals. Programmable composition >>>> per application Programmable hardness >>>> wear protection

Physical isolation/permeability >>> corrosion protection

Metal matrix alloy >>>> chemical protection and flexibility

CEC 2.0For heavy industrial applications and intensive use, requiring high wear and impact resistance. CEC 2.0 is the advised coating for the underwater use of the piston rod in the pit of the vertical caster.

CEC 2.2For severe applications and intensive use, requiring high wear and impact resistance in combination with exceptional corrosion and chemical resistance.

Unique features of CEC Application oriented coatingWear resistant against abrasives and erosion attack High impact strength Excellent sealing properties Excellent corrosion resistance Long life time Logical development of the Ceramax concept Environmentally friendly State of the art rod coating

CS + Ni / Cr

CS + Cr

431 + Cr

CS + CEC 2.0

CS + CEC 2.2

SuperDuplex

CS + Welded Overlay

Corrosion Resistance

CS + Cr

CS + Ni / Cr

431 + Cr

CS + CEC 2.0

CS + CEC 2.2

SuperDuplex

CS + Welded Overlay

Tribology

CS + Cr

CS + Ni / Cr

431 + Cr

CS + CEC 2.0

CS + CEC 2.2

SuperDuplex

CS + Welded Overlay

Mechanical

General / overall corrosion resistanceRelative properties in relation to wear

and friction over timeGeneral properties in relation to mechanical stress and impact

PREn

number,

Corrosion tests SDCT (ISO 4536 DNV mod.) and ASTM G48

Surface Roughness (ISO 4287) measurements and BR wear & friction

tests

Hardness tests (ISO 6507), BR Impact tests (ASTM D2794-93 mod.) and

Adhesion tests (ISO 14916)

Bosch Rexroth B.V. 7/15Ceramax

Engineered Coating

Protection umbrella

The Bosch Rexroth cylinder has an optional umbrella system as a extra protection against non ferrous particles. Contamination which is floating in the water and can be a potential risk for the function of moving parts like the rod surface.

Above picture shows us the cylinder head with extra umbrella. The umbrella functions: Particles in the water will be directed away from the

cylinder by the surface of the umbrella. The umbrella contains a extra scraper which will wipe off

all contamination from the piston rod and direct it away from the cylinder by the umbrella.When contamination passes the first scraper it can float

away through big pass out holes under the umbrella. Now the normal scraper will wipe of possible remaining

contamination. 1st

scraper can be replaced without removing cylinder umbrella

Advantages:Above construction ensures a clean environment for the normal scraper and seals which ensures a very long life time and reduce risk of sealing failure caused by non ferrous particles.

8/15 Sealing

system | Protection

umbrellaBosch Rexroth B.V.

Sealing system

The Bosch Rexroth sealing system is developed by our in-

house R&D department in close cooperation with world leading sealing companies. For the vertical non ferrous caster the seals will be used under water in a heavy contaminated environment. Secondly low friction properties of the seals are very important to prevent stick slip.

Advantages of the BR sealing system Low friction Low stick slip tendency Designed for under water use Heavy duty scraper for this environment

Technical specificationsLow friction seal in combination with CEC 2.0Temperature range

-

30 / + 70 ˚CPressure range

appr. 3-8 MPaFriction level

+++Wear resistance

+++Life time

Minimal 5.000 kmunder normal circumstances

Minimum oil film

++++(oil drag-out)

ScraperTo make sure any contamination will be wiped off the piston rod and will not enter the cylinder, the scraper on top of the cylinder is installed. The scraper is designed to manage an extreme tear and wear resistance to resist for example non ferrous particles which are in the water.

Double acting scraper Optimized pressure profile Scraper function for fine particles

Primary and secondary seal Special BR design Optimized pressure profile Profile for pumping back oil

Primary

seal

Secondary

seal

Double acting

scraper

Scraper

CIMS MKIII

Bosch Rexroth B.V. 9/15CIMS Measuring

System

CIMS Measuring system

With the Bosch Rexroth measuring system, the most reliable solution to measure the movement of your hydraulic cylinder is there for you. The CIMS measuring system works in every environmental situation, such as dredging vessels, offshore plants, ship loading and unloading systems, tunneling machines and bridges. There is no environment where the CIMS measuring system does not work.

Application of a CEC piston rod coatings is a prerequisite for the functioning of the CIMS unit, another Bosch Rexroth innovation. CIMS measuring system is a highly reliable, failsafe and accurate stroke measuring system for cylinders.

The CIMS can easily be implemented in customer controls. The differential counting pulses are extremely protected against and insensitive to electrical noise. The pulses can be accepted by a variety of counters with differential line receivers.

CIMS MKIII can be used for: Control of position Read-out of position Safeguarding / limiting of position Triggering of external actions

CIMS MKIII offers fully digital signals for direct digital operation without any loss of accuracy and need for calibration. For less demanding applications conversion to analogue current or voltage is possible, but will ad an additional inaccuracy of approx. 0,2% full stroke.

The CIMS MKIII sensor and electronics, are integrated in the cylinder head in a solid stainless steel housing outside the high pressure zone and fully protected against all environmental impacts. This construction also ensures easy serviceability and the possibility to offer redundant measurement solutions. A variety of electro-mechanical cable output from a high performance connector up to high pressure protection is available.

Advantages Unlimited stroke length Basic accuracy better than 1 mm for all stroke length No calibration needed (1024 pulses / 10 mm) Data transmission over hundreds of meters Standard incremental counting pulses (quadrature) Easy interfacing to customer electronics for measuring,

safeguarding and control Redundancy solutions possible Stainless steel housing Easy serviceability, without oil spillage All fragile parts protected against all impacts Extremely robust shock resistant Cable output fit for all environments Thousands of CIMS units in the field MTBF over 100.000 hours Optional Ex II 2 G Ex d e mb

IIB T4

Specifications Input

15 –

32 V DC(UPS not included)

Power consumption

250 mA

at 15 V DC Output

Digital incremental encoder1024x (A+B) pulses per 10 mm

Output drivers

RS422.A differential line drivers Cable length

Up to 500 m Accuracy

Linearity < 1 mmTemp. coefficient ±

0,025 mm/˚C Hysterese

±

0,05 mm Type of protection

IP 68 up to 10 m Max. velocity

1,5 m/sec Operating temperature

-

25 to 60 ˚C

Requirements CEC piston rod coating Piston rod ≥

45 mm

Flexible MTS for speed control

IntroductionThe heart of MTS sensors is the ferromagnetic measuring element, also known as the waveguide, and a movable position magnet that generates a direct-axis magnetic field in the waveguide.When a current or interrogation pulse passes through the waveguide, a second magnetic field is created radially

around the waveguide. The interaction between the magnetic field in the waveguide and the magnetic field produced by the position magnet generates a strain pulse which travels at a constant ultrasonic speed from its point of generation, the measurement point, to the end of the waveguide where it is transformed into an electric pulse in the sensor element. The resulting signal is processed by the specialized electronics of the Temposonics

sensor.

Temposonics

RF Series

Non-contact technology –

an external movable magnet marks the position –

of the absolute Temposonics

linear sensors eliminates the wear, noise and erroneous signal problems and guarantees the durability without any recalibration.

Design enhances reliabilityThe extremely robust sensors are modular in mechanics and electronics design.

A profile or rod-shaped sensor housing protects the sensing element which gives rise to the measurement signal.

The sensor head accommodates the complete modular electronic interface with active signal conditioning. Double encapsulation ensures high operating safety and optimum EMC protection.

The position transmitter, a permanent magnet –

fixed at the mobile machine part –

drives over the sensor’s stroke contactlessly

and starts measuring the housing wall.

Advantages of Temposonics Rugged industrial sensor Absolute measurement Speed measurement at low speeds LEDs

for sensor diagnostics Non-contact sensing with high durability High accuracy: Resulution

up to 0,5 μm Linearity better 0,01% F.S. Repeatability 0,001% F.S. Direct SSI Output, Gray/Binary Synchronous measurement for real-time sensing Sensor can be replaced …

opening the hydraulic system.

AttentionIf position measurement is required without

speed control, Bosch Rexroth advises to use the Ceramax

Integrated Measuring System (CIMS). The CIMS sensor is less space consuming, which allows Bosch Rexroth to deliver an hydraulic cylinder with a smaller shell diameter. This results in a significant positive effect on the total price

of the Bosch Rexroth hydraulic cylinder.

Mounting of sensor in demanding environmentsBosch Rexroth has mounted this sensor in the cylinder between plunger and shell completely protected against the underwater environment.

The sensor is mounted in the head of the cylinder for easy service ability.

The SS housing with seals ensures protection against the underwater environment. Also the cable can be protected against pressure and external damage by our sealed protection hose.

The sensor is mounted in a pipe which gives the possibility to change the sensor without loosing the hydraulic function. This ensures easy serviceability.

10/15 Flexible

MTS for

speed controlBosch Rexroth B.V.

Magnet

field of position

magnet

Magnet

field of current

pulse

Mechanical

strain

pulse

Movable

position

magnet

Strain

(torsion) pulse

converter

Magnetostrictive

sensing

element (Waveguide)

Current

interrogation

pulse

Deflection calculation

Every Bosch Rexroth cylinder is calculated on a wide range of functional aspects. For the non ferrous caster of the most important issue is the deflection and rotation of the piston rod during the vertical casting process. Deflection and rotation will cause bended or twisted products and should be minimized to acceptable limits in order to meet the quality requirements for the end products. Please note that higher quality requirements lead to cylinders which have less deflection and rotation. This cylinder has a bigger plunger and bigger shell and for this reason will be more costly. (a big casting table will need a bigger cylinder to reach same end product quality.)

DeflectionThe two major causes for deflection are clearance in the guidings

and the bending moment. Clearance is needed to allow the plunger and piston to move trough the head and the shell of the cylinder. Bosch Rexroth has a special manufacturing procedure for this cylinder to reach the highest accuracy possible.Bending moment is caused by eccentricity in the casting weight. When billets are closed on one side of the casting table it will have a eccentric weight. For this reason it is important to know what the maximum quantity of closed billets can be on one side of the table. With less bending moment we can design a smaller cylinder and reach the same quality.

RotationMaximum rotation of the casting table is limited by the internal key. In order to allow the cylinder to move this key must also have a (very limited) clearance. Secondly the tolerance on the straightness of the key is a important figure for the maximum rotation of the table. For the rotation of the table also a bigger cylinder will cause less rotation than a smaller cylinder which has his key more close to the centre line of the cylinder. Normal values for the maximum rotation of the table are ±4’

or ±5’

(±4/60°

or ±5/60°) over the complete stroke of the cylinder. Billets in the middle of the casting table will not have any influence of rotation. For example: billets with distance of 1250 mm from the centre of the table and ±4’

will have a theoretical maximum influence of appr. ±1,45 mm.

Input for calculationOn the last pages of this brochure a inquiry list in printed. In

this list all necessary questions are presented. Most important questions for the bending and rotation calculations are:1.) Required quality. This is maximum bending of the end product over the complete stroke and related allowed deflection/rotation. Stroke of product and cylinder are needed.2.) Maximum bending moment on the plunger.3.) Weight of casting table with all accessories.With all technical information we will make a input list. First rows are printed below:

Output of calculationThe graph below shows the outcome of the calculation. The X-axis shows the stroke of the cylinder. The example below shows us a cylinder with stroke 8.500 mm.Starting position of the vertical casting process is with plunger almost fully extended which corresponds with stroke 8,5 meter. In this position no billets are on the table so eccentricity / bending moment has value 0. With no bending moment the plunger will not have deflection. Because head –

piston distance is minimal in this position the tolerances between the parts give maximum movement at the piston rod end (appr. 1.5 mm).During the vertical casting process the bending moment will increase due to the increase of the total weight of the billets,

The deflection will first increase due to the increase in bending moment. But when the piston rod becomes shorter and stiffer that has a positive influence on the deflection. Due to the increase of the distance between head and piston and the retracted plunger the clearance is quickly decreasing. Total deflection is sum of these values and is calculated in last column. Picture below shows us the chart in graph.

Bosch Rexroth B.V. 11/15Deflection

calculation

InputCentric load on the cylinder (weight of tabe

etc.)

F centric: = 100000 NewtonCentric load on the cylinder (weight of centric billets)

F billets: = 280000 NewtonCasting weight at fully stroked “in”

position:

F cyl

max: = 380000 NewtonStroke of the cylinder

Total stroke: = 7500 mm…

Stroke

Def

lect

ion

(mm

)

Stick slip simulation

Next to deflection and rotation an important quality item for the end products is preventing stick slip in the cylinder. Without preventing stick slip the very slow moving cylinder will have an inconsistent speed and corrugated end products will be produced.

Low friction sealsThe first measure against anti stick slip are the special Bosch Rexroth low friction seals. These seals are described in this brochure.

Stick slip simulationBosch Rexroth has a in house developed simulation program where we can simulate the vertical casting process with the cylinder, hydraulic system and table & pay load. For this simulation several technical questions are in the 3rd

sheet of the inquiry sheet. This simulation will be done after basic design of the cylinder is ready and all dimensions of the cylinder are fixed. As a input parameter the stick and slip properties of the low friction seal system in combination with the rod coating have been tested and measured by our development group.The simulation outcome is an orifice diameter. This orifice will create a pressure drop over the piston during casting. The orifice serves as the damping function in the mass, spring system.Please note that during ordering the cylinder or shortly after also the hydraulic system must be fixed in order to simulate the cylinder correctly and design the cylinder with the correct size orifices.

Below graph shows speed measuring on the first seconds after casting process is started. After just 1,5 second the cylinder is moving with a constant speed of 3,2 mm/s. When stick slip occurs this horizontal line will immediately visualize this by showing fluctuations.

12/15 Stick slip simulationBosch Rexroth B.V.

Δ

Orifice

General data

Bosch Rexroth B.V. 13/15Inquiry

list: General data

Technical data

14/15 Inquiry

list: Technical

dataBosch Rexroth B.V.

QuantityType code

Type denomination CYApplication code HNP

External mounting shell side ME7Bore dimensionRod dimension

Stroke lengthCylinder construction B

Revision index 10Oil connections

Position oil connectionsPiston rod surfaceMounting rod side X

Cushioning USealing system T

Position sensor systemOption 2

Country code N

Viscocity range of the medium cSt

Rod extension mm

Displacement transducer CIMS MTS No optionOutput signal 4-20 mA 0-10 V SSI

Others Position indicator

Limit-/proximity switch both sides front only rear onlyPressures

Operational pressure MpaDesign pressure Mpa

Test pressure MpaMiscellaneousHydraulic function of the cylinder Plunger

Moving frequency /HourMoving amplitude mm

Duty cycle Hours/dayDesign temperature range ˚C

Environmental humidity 100 %The rod end is Not guided

Preservation dope added NoWeight cylinder (approximately) kg

Piston bearing BronzeRod bearing Bronze

Max. speed to touch head m/secCountry to operate

Date Signature

Must be filled out

Underwater

All details can be found on page 4

The exact weight without oil is found on the drawing

Will be calculated by Bosch Rexroth

Will be calculated by Bosch RexrothWill be calculated by Bosch Rexroth

Working stroke during operation

Remarks

Water temperature

Bosch Rexroth B.V. 15/15Inquiry

list: Additional

data for

non ferrous

casting

Additional data for non ferrous casting

Data for simulation

Minimum centric weight kg

Casting weights of billets kg

Piping length meter

Oil volume in piping litreHeight between power pack and

cylinder headmeter

Type of switch valve (if present)

Type of flow control (if present)

Type of filter

Type of flow meter (if present)

Type and brand of the medium used

Medium temperature ˚C

Hydraulic diagram and parts list

Minimum casting speed mm/s

Maximum casting speed mm/s

Maximum retracting speed mm/s

Maximum extending speed mm/s

Mechanical data

Maximum eccentric bending moment at retracted position

Maximum torque on rod end (shearing of key bolts)

Maximum allowable deflection of rod end at maximum eccentric

loadMaximum allowable rotation of

casting table at maximum torque

Additional data/remarks

Date Signature

Must be filled out

Please send this to your Bosch Rexroth contact

Between cylinder and power pack

Casting table, stopper block, etc.

What quality of the billets is required?

How many billets may be stopped before casting process will be stopped?

What quality of the billets is required?

Or please send a picture of the casting table(s)

Bosch Rexroth B.V. Postbus 32

5280 AA Boxtel Kruisbroeksestraat

1

5281 RV Boxtel

The NetherlandsTel. +31 411 65 1951 Fax +31 411 65 1483 www.boschrexroth.nl

20101004-HNP© Bosch RexrothPrinted in the United States.

The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.