Five Heat Treatment Processes for Seamless Steel Tube
The heat treatment process of seamless steel pipe mainly includes the following 5 categories: 1. Quenching + high temperature tempering The steel pipe is heated to the quenching temperature to transform the internal structure of the steel pipe into austenite, and then rapidly cooled at a speed greater than the critical quenching speed to transform the internal structure of the steel pipe into martensite, and then with high temperature tempering, the steel pipe structure is finally transformed into a uniform Tempered sorbite structure. This process can not only improve the strength and hardness of the steel pipe, but also organically combine the strength, plasticity and toughness of the steel pipe. 2. Normalizing After heating the steel pipe to normalizing temperature, the internal structure of the steel pipe is completely transformed into austenite structure, and then it is a heat treatment process that uses air as a medium for cooling. Different metal structures can be ...