Q6: How to do roll storage inspection
Q6: How to do roll storage inspection
A6:
For each new roll inspected and accepted, a specific number shall be recorded and a file corresponding to the number shall be established. The file shall record the furnace number, material, specification, drawing number, weight, storage time, date of each loading and unloading, amount of each grinding, diameter before and after grinding, date of scrapping and reason for scrapping.
The hardness of the roll will increase after use, and ensure that the hardness returns to the initial hardness after grinding.
At the same time, all records are entered into the computer for long-term retention.
For the work roll with explosive roll, coloring detection should be carried out after grinding to check whether the crack is completely eliminated.
After grinding, the hardness and diameter are tested and marked on the roller body.
Hardness recovery Initial hardness is the main criterion to check the complete elimination of fatigue layer.
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