Q 2 What to do during roll incoming inspection?
Q 2 What to do during roll incoming inspection?
A2: First of all, the supplier needs to provide all inspection certificates, and then the company needs to carry out inspections such as appearance, dimension, surface hardness and internal flaw detection.
1. Appearance. Check whether there are collision marks on the surface of the work roll and check the surface roughness.
2. Dimensional inspection. Drawing geometric size and shape tolerance.
3. Hardness test. Including the hardness test of roll body and roll diameter, the hardness test of working roll neck.
4. Material chemical composition inspection, not up to our company signed the contract material to be returned processing.
5. Inspection, ultrasonic inspection should be carried out before entering the factory to deal with the problem in the bud.
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