What is the purpose and method of cold treatment for seamless steel pipe

Seamless steel pipe has many applications in our life, but people still know little about seamless steel pipe. Today, let's introduce the purpose and method of cold treatment for seamless steel pipe!

Operation method: cool the quenched seamless steel pipe to - 60 ～ - 80 ℃ or lower in low temperature medium (such as dry ice and liquid nitrogen), and then take out the steel pipe to room temperature after uniform temperature.

Objective:
1. All or most of the retained austenite in the quenched seamless steel pipe is converted into martensite, so as to improve the hardness, strength, wear resistance and fatigue limit of the seamless steel pipe;

2. Stabilize the structure of steel to stabilize the shape and size of seamless steel pipe.

Key points of application:
1. After quenching, the seamless steel pipe should be cold treated immediately and then tempered at low temperature to eliminate the internal stress during low temperature cooling;

2. Cold treatment is mainly applicable to compact cutting tools, measuring tools and tight parts made of alloy steel.