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Spare part stock

Headquarters Goteborg, Sweden, founded 1979. Sensor development. Manufacture & assembly. Marketing and Sales. Service. Spare part stock. Calibration room. Headquarters in Gothenburg. Management Development Production Service. NA office in Charlotte, NC Sales Service.

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Spare part stock

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  1. Headquarters Goteborg, Sweden, founded 1979 Sensor development Manufacture & assembly Marketing and Sales Service Spare part stock Calibration room

  2. Headquarters in Gothenburg. • Management • Development • Production • Service • NA office in Charlotte, NC • Sales • Service Global organisation Offices in the UK, Germany and Finland.

  3. Tube Profiler™ On line profile measurement in tube mills

  4. Tube Profiler™ Design Criteria • Able to measure true cross section profile and not miss concave surface features • Suitable for measuring large bar and tube sizes • Require very low maintenance & have low running costs • Provide fast measurement rate • Advantages over existing systems in the market • High accuracy

  5. Existing methods • Shadow measurement using camera and background light • Shadow measurement using laser scan micrometers • Laser lines and matrix cameras

  6. LIMAB Method Rotating or Static optical triangulation Static optical triangulation – round bars or tubes Rotating optical triangulation – for non round bars or tubes

  7. 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

  8. 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)

  9. Shadow sensor limitation

  10. 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

  11. Optical Triangulation: Principle CCD Detector Optics X-max X-min Laser

  12. The PreciCura™ laser sensor Standard ‘off the shelf’ product Rugged Industrial sensor Accurately measures distance High performance Fast measurement 2000 Hz

  13. Profile measurement

  14. Movement compensation Patented movement compensation algorithm CAN-bus communication with measurement server. All sensors synchronised

  15. The Tube Profiler™ system

  16. System Scope

  17. Tube Profiler Calibration Frequent calibration not required and can be completed in 5-10 minutes • Method - Oscillating Gauge • Calibration tool has round and rectangle reference masters. • Gauge rotates calibration masters fixed. • Method - Static Gauge • Calibration tool has 3 reference diameters and rotates in measuring region

  18. Connection panel With quick change connector, controls and air purge inlet.

  19. Measurement wheel 8-18 PreciCura sensors CAN-bus communication with measurement server. All sensors synchronised

  20. TubeProfiler 8 Static lasers 8 PreciCura sensors CAN-bus communication with measurement server. All sensors synchronised

  21. Frame controls side

  22. Pyrometer Measures the temperature of the bar as it passes through the frame. Used for cold conversion calculation of profile data.

  23. Encoder (oscillating version only) 4096 pulses per revolution. Angular resolution: 0.1°. CAN-bus communication.

  24. Servo motor and gearbox (oscillating version only) Oscillates the wheel ± 300° Rotation speed is approximately 17 rpm. Keeps track of wheel position, rotation direction acceleration and deceleration.

  25. Lifting table Automatic positioning of the measuring object in the center of the gauge ± 50mm in height.

  26. Operator Screen, Round material

  27. Operator Screen, Diameter & Ovality

  28. 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.

  29. Operator Screen, Flat material

  30. Operator Screen, Trend graphs

  31. Operator Screen, Diameter & Ovality

  32. Specification • 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) Note: HotProfiler can be supplied for measuring larger bar sizes

  33. HotProfiler at bar rolling mill

  34. HotProfiler at bar rolling mill

  35. HotProfiler at bar rolling mill

  36. HotProfiler at bar rolling mill

  37. HotProfiler at bar rolling mill

  38. HotProfiler Video courtesey of Ovako Hofors, Sweden

  39. Comments from our HotProfiler customers Easier to make setup of the mill and the possibility to record results in a database for further analysis. 

  40. 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.

  41. Comments from our HotProfiler customers 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.

  42. Summary Probably the fastest profile measurement systems available True profiles – Laser based optical triangulation measurement ensures accurate and reliable measurement data, not calculated profiles.

  43. 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

  44. 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

  45. HotProfiler™ some references

  46. Thank you

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