Spare part stock Calibration room

Headquarters Goteborg, Sweden,

founded 1979

Sensor development

Manufacture & assembly

Marketing and Sales

Service

Global organisationHeadquarters in Gothenburg.

-Management

-Development

-Production

-Service

NA office in Charlotte, NC

-Sales

-Service

Offices in the UK, Germany and Finland.

On line profile measurement in tube mills

Tube Profiler™

Tube Profiler™

Design Criteria

• Able to measure true cross section profile and not miss concave surface features

• Require very low maintenance & have low running costs

• Provide fast measurement rate

• Advantages over existing systems in the market

• Suitable for measuring large bar and tube sizes

• High accuracy

• Shadow measurement using camera and background light• Shadow measurement using laser scan micrometers• Laser lines and matrix cameras

Existing methods

LIMAB Method

Rotating or Static optical triangulation

Static optical triangulation – round bars or tubes

Rotating optical triangulation – for non round bars or tubes

Static Optical Triangulation

8 - 18 laser sensors measure distance to bar or tube

Each sensor measures at 2000 Hz

All sensors synchronised

Fastest profile mill gauge available today

Rotating Optical Triangulation

18 sensors measure distance to bar or tube

Sensors mounted on ring which oscillates +/-300 degrees

Full cross section profile measured every 200 ms

1 cycle every 3.6 seconds (17 CPS)

Shadow sensor limitation

Existing Methods

In summary the shadow techniques does not measure the full profile when there are concave features

- To calculate the profile they have to ‘assume’ certain conditions to generated the cross section

Arrows show where there is missing data

Optics

CCD Detector

Laser X-min X-max

Optical Triangulation: Principle

The PreciCura™ laser sensor

Standard ‘off the shelf’ product

Accurately measures distance

High performance

Fast measurement 2000 Hz

Rugged Industrial sensor

Profile measurement

Movement compensation

Patented movementcompensation algorithm

CAN-bus communicationwith measurement server.

All sensors synchronised

The Tube Profiler™ system

Factory NetworkTCP/IP

Operator WS

Measurement Server

WSProductionMgm System

System Scope

Frequent calibration not required andcan be completed in 5-10 minutes

Tube Profiler Calibration

Method - Static Gauge

Calibration tool has 3 reference diameters and rotates in measuring region

Method - Oscillating Gauge

Calibration tool has round and rectangle reference masters.Gauge rotates calibration masters fixed.

Connection panel

With quick change connector, controls and air purge inlet.

8-18 PreciCura sensors

CAN-bus communicationwith measurement server.

All sensors synchronised

Measurement wheel

8 PreciCura sensors

CAN-bus communicationwith measurement server.

All sensors synchronised

TubeProfiler 8 Static lasers

Frame controls side

Pyrometer

Measures the temperatureof the bar as it passesthrough the frame.

Used for cold conversioncalculation of profile data.

Encoder

4096 pulses per revolution.Angular resolution: 0.1°.CAN-bus communication.

(oscillating version only)

Servo motor and gearbox

Oscillates the wheel ± 300°Rotation speed is approximately 17 rpm.Keeps track of wheelposition, rotation directionacceleration and deceleration.

(oscillating version only)

Lifting table

Automatic positioning ofthe measuring object inthe center of the gauge ± 50mm in height.

Operator Screen, Round material

Operator Screen, Diameter & Ovality

TubeProfiler Statistics

.slb files

•Records all the data measures for each tube or bar and saves as an .slb file

•Contains all the data that is used to compile the 2D & 3D graphs on the operator screen.

•Archived files can be ‘replayed’ on the Tube Profiler software

.txt summary files

•Records 26 separate key values for every tube. Files can be read by MS Excel or other software.

•Includes header information, tube ID, tube no., date, time and target size.

•For each tube the following data will be calculated: min, max, avg., max ovality, avg., ovality, tube temp, length (option) Cp & Cpk.

Operator Screen, Flat material

Operator Screen, Trend graphs

Operator Screen, Diameter & Ovality

• Measurement Range 20 < < 700mm

• Measurement Range (square, hex,..) 20 .. 400 x 20 .. 400 mm

• Measurement Range (flat, T x W) 5..50 x 5..400 mm

• Measurement cycle 50..200 ms

• Measurement system uncertainty 0.05 mm @ 2 (round bars < 300mm))

• Bar temperature < 1200 C

• Environmental temperature 15 – 25 C (temperature where cooling air is taken)

Specification

Note: HotProfiler can be supplied for measuring larger bar sizes

HotProfiler at bar rolling mill

HotProfiler at bar rolling mill

HotProfiler at bar rolling mill

HotProfiler at bar rolling mill

HotProfiler at bar rolling mill

HotProfiler

Video courtesey of Ovako Hofors, Sweden

Easier to make setup of the mill and the possibility to record

results in a database for further analysis. 

Comments from our HotProfiler customers

Comments from our HotProfiler customers

The downtime in the mill is reduced because it is

easier to take decisions whether the rolled product is

within tolerances which means reduced the start-up time.

This product is very reliable and easy to use with a minimum of

maintenance. It is an exceptional tool for the operational people

in the mill as well as for the process engineers and the marketing

department which can follow up the result from the rolling of the

products.

Comments from our HotProfiler customers

Summary

Probably the fastest profile measurement systems available

True profiles

– Laser based optical triangulation measurement ensures

accurate and reliable measurement data, not calculated

profiles.

Summary

Full monitoring of the process

– Immediate product and process feedback

– Allows for quick recognition and response to

out-of tolerance features

– Reduces waste caused by non-conforming production

– Reduces time and waste at product changes

Summary

Compact design

– Easy to install and move in an existing line

– Easy to maintain

Network capabilities

– Easy to download parameters

– Easy to get reports

Designed for hot rolling mill environment

HotProfiler™ some referencesCustomer Country Gauge Product sizes Date Ovako-Smedjebacken Sweden HotProfiler 390 ● 40-95 mm

▬ 6-60 x 80-255 mm 2001

Sandvik Steel Sweden HotProfiler 420 ● 72- 240 mm ▬ 70-175 x 75-175 mm

2003

Metal Ravne Slovenia HotProfiler 390 ● 26-105 mm ▄ 25-75 mm ▬ 6-60 x 40-260 mm

2004

Store Steel Slovenia HotProfiler 390 ● 21-140 ▄ 35-65 ▬ 6-62 x 50-200 mm

2004

Ovako-Hofors Sweden TubeProfiler ● 80-270 mm 2005 Ovako-Hällefors Sweden HotProfiler ● 11-85 mm 2006 ArcelorMittal Czech Republic HotProfiler ● 160-210 mm

▄ 180 mm 2007

Asco Metal-Allevard France HotProfiler ● 22-72 mm ▄ up to 210 ▬ 6-60 x 50-120 Hex 25-53 mm

2007

Asco Metal-Allevard France HotProfiler ● 11-75 mm 2008 Ovako-Hofors Sweden TubeProfiler ● 80-255 mm 2008 Benteler Germany TubeProfiler ● 110-125 mm 2008 Ovako Imatra Finland HotProfiler ● 20-95 mm

▄ 25x25 – 76x76 2008

IMS Germany HotProfiler ● 167-408 mm 2008 Ovako-Hofors Sweden TubeProfiler ● 138-360 mm 2009 Sunflag India HotProfiler ● 13-45 mm

▬ 6-90 x 25-125 Hex 13,3-38 mm

2009

Sunflag India WireProfiler ● 5,5-12 mm 2009

Thank you