Stressometer Flatness Control System Measurement roll health check report

Transcription

1 ABB MEASUREMENT & ANALYTICS Stressometer Flatness Control System Measurement roll health check report EXAMPLE Customer: Nice customer Mill name: CM1 Customer reference: Cold Mill 1 Original ABB order number L Issuer name and department: Kilroy, IAMA/SV Date:

2 ABB internal: Complete this form when Protection is activated. Use the Tab key to advance to the next check box/field. Stop Protection at the bottom of the Restrict Editing pane when you paste attachments etc. Chose the relevant symbol for the summary section Passed! Warning Delete this text before sending to customer. X Failed Summary Visual damages on the roll surface Bearing house/cartridge + labyrinth seals Inspection of DTU/STU Airhumider check Roll diameter Resistance and insulation test Calibration verification

3 Analysis and recommendations Direct observations Stressometer measuring roll and mill installation is in good working condition. Customer makes regular inspections of the Stressometer system according to plant maintenance plan to prevent production down time. Probable causes N/A Projection for 3-5 years use without any actions taken If the regular yearly Stressometer measurement roll health check continues, no problem are expected to occur. Recommendations Continue to do the yearly Stressometer measurement roll health check. Calibration verification every three (3) year.

4 General Mill name CM1 Roll serial number Roll data Diameter Ø200 mm Ø313 mm Ø400 mm Roll type Standard Semi foil Foil Number of 52 mm zones 32 Number of 26 mm zones - Ring surface material Standard Compound HSS Seamless Tungsten carbide Rubber Other Comments Faults reported by customer: No faults reported by the customer.

5 Inspection and test with rings mounted Visual damages on the roll surface Normal wear with no major scratches that affect flatness measurement or quality of strip surface. Bearing house/cartridge + labyrinth seals Inspection of DTU (version 9.0 and later) Serial number Aligement within limits. No fault found Inspection and cleaning of STU Serial number SE1012D645 Normal wear with no defects. Airhumider check Filter OK and water level within limits. Roll diameter OK Not OK Roll diameter measured by the customer to 313 mm. Minimum permitted diameter (standard roll) is: 307 mm (Ø313 mm, hardened steel & HSS) 308 mm (Ø313 mm, compound rings) 394 mm (Ø400 mm, hardened steel & HSS) Primary winding resistance test See attachment A: Resistance test Comments: (Normal resistance values are 3-11 Ω. The transducers are connected in series on the primary side in two loops; AB transducer groove A & B, CD transducer groove C & D) Secondary winding resistance test See attachment A: Resistance test Comments: (Normal resistance values are 0,8 3,0 Ω)

6 Primary winding insulation test See attachment A: Insulation test Comments: (The insulation to ground of each primary loop is measured at 500 V and should be greater than 20 MΩ. Measured in dry condition with the rings mounted) Secondary winding insulation test See attachment A: Insulation test Comments: (The insulation to ground of each secondary loop is measured at 250 V. Measured in dry condition with the rings mounted) Calibration verification See attachment B: Roll calibration record Comments: (The graph Bigg. Sens. Diff for each zone is the maximum difference in sensitivity for a transducer within the zone, related to the average sensitivity of the zone. Maximum permitted value is ±7,5% or +diff minus diff 15% if otherwise is not agreed.)

7 Attachment A: Test report with rings mounted

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9 Attachment B: Roll calibration record

10 ABB AB Industrial Automation Measurement & Analytics Force Measurement SE Västerås, Sweden Internet: 3BSE rev A