Processing characteristics of hot-rolled seamless steel pipe

1. Specification reliability

For high-precision hot-rolled seamless steel pipes, the specified precision is high, so the reliability of the specifications must be maintained. Because straightening in the air, the cooling speed is relatively slow, and the precision steel pipes have anti-aging properties for martensite. In fact, the characteristics of heat treatment will increase the total number of residual martensitic hot-rolled seamless steel pipes in the mechanism, so refrigeration must be carried out.

2. Reduce heat treatment deformation

Because the hot-rolled seamless steel pipe is long and slender, it is very easy to deform in the whole process of hardening, so its deformation must be strictly controlled. The heat treatment process is a very important process. Carrying out immediate straightening is a key factor to ensure the improvement of its compliance rate. Therefore, precision steel pipes should be heat-treated in a hot bath or cooled in oil. Thermal straightening must be clearly stated at all times.

3. High toughness

Hot-rolled seamless steel pipe mainly accepts contact fatigue load, so it must have high strength, so heat treatment, induction quenching or organic chemical heat treatment process should be carried out, and then ultra-low temperature quenching should be carried out.

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