1. When the Q355NH weathering steel plate with a thickness of more than 10 mm is rolled in the rolling pit, after the wear-resistant liner bites into the rolling mill, the splint should be opened quickly to reduce the gap between the Q355NH weathering steel plate splint and the edge of the bimetallic wear-resistant plate. Friction to prevent edge burrs from being pressed in.
2. The bottom roller pit is used to improve the raw material of the bottom roller, and replace the asbestos roller of the car tube with the original heat-resistant alloy bottom roller.
3. Before the Q355NH weathering steel plate is produced by the pit of the straightening machine, check whether the straightening roller is bonded to the oxide scale, and arrange it in time.
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