Wear-resistant pipes are wear-resistant pipes and wear-resistant pipes, mainly including wear-resistant straight pipes, elbows, tees, big and small heads, square and round joints, variable diameter pipes and other structural parts. It is a pipeline mainly used for the transportation of abrasive materials such as pneumatic and pumped slurry.

High-frequency quenching is mostly used for surface quenching of steel pipes (seamless pipes and welded pipes). It is a metal heat treatment method that generates a certain induction current on the surface of steel pipes, rapidly heats the surface of steel pipes, and then rapidly quenches them. Induction heating equipment, that is, equipment for inductively heating steel pipes for surface quenching.

Heat treatment refers to a metal thermal processing process in which steel pipes (such as seamless pipes and welded pipes) change the chemical composition and structure of the surface or interior of the material by means of heating, heat preservation and cooling in a solid state to obtain the required properties. The heat treatment of steel pipe mainly includes quenching, annealing, tempering and normalizing. Among them, quenching and tempering are closely related, and they are often used together, and both are indispensable.

Bright heat treatment is that the stainless steel tube should be heated in a vacuum furnace or ammonia decomposition, inert gas, and reducing atmosphere to avoid oxidation, so as to obtain a bright surface heat treatment effect

The reject rate of seamless pipes caused by the quenching process in the heat treatment process is often high, which is mainly due to the formation of large thermal stress and structural stress during the quenching process. In addition, due to factors such as inherent metallurgical defects, improper material selection, wrong materials, poor structural design, defects formed during cold and hot processing, etc., they are easily exposed in the quenching and tempering process.

The common tempering defects in the production of seamless pipes are: too high or too low hardness, uneven hardness, and deformation and brittleness caused by tempering.