General production process of cold rolls
General production process of cold rolls
1. The production process of cold rolling work rolls is as follows:
Selected raw materials - EBT primary refining - LF refining - vacuum degassing - casting - electroslag furnace - forging - spheroidizing annealing - rough machining - quenching and tempering (quenching + high temperature tempering) - semi-finishing - flaw detection - and heat treatment —Dual-frequency quenching—cold treatment—low temperature tempering—finishing—hardness, ultrasonic wave and metallography—packaging and delivery.
2. The production process of cold-rolled support rolls is as follows:
Selected raw materials - EBT primary refining - LF refining - vacuum degassing - casting - forging - spheroidizing annealing - semi-finishing - quenching and tempering (quenching + high temperature tempering) - flaw detection - open and close furnace quenching - tempering - finishing Processing - hardness, ultrasonic and metallography - packaging and delivery.