Stainless steel annealing pipe - Shanghai Haosteel Group Co., LTD

Stainless steel annealing pipe will be deformed due to the redistribution of internal stress after machining, and its internal stress is easy to remain. In order to reduce hardness, improve plasticity; Refine the grain, even the composition of the steel, and eliminate the residual internal stress in the steel to prevent deformation and cracking. Therefore, stainless steel pipes must be stress-relieved annealing after rough processing.

Stainless steel annealing pipe

The common equipment for stainless steel pipe stress annealing is stainless steel pipe continuous bright annealing furnace, which is a Muffle type bright annealing furnace. The protective gas source uses ammonia decommissioning furnace and has gas purification device supporting. The transmission mode can be selected as "stainless steel mesh belt" or "stainless steel belt" according to user requirements. The equipment has the characteristics of advanced control, remarkable energy saving, easy maintenance, etc. PID automatic multi-zone temperature control is adopted in the heating area of the whole line.

The stainless steel pipe is evenly arranged on the feed rack, sent to the annealing furnace through the conveyor belt, under the protection of a controlled atmosphere, heated to 1050 ~ 1080 ° C, and then kept warm for a short period of time, the carbide can be dissolved in austenite, and then quickly cooled to 350 ° C below, you can obtain susaturated solid solution, that is, uniform unidirectional austenite.

What is the purpose of stainless steel annealing tube
In the development of the stainless steel welded pipe industry, stainless steel pipes have the largest premise for development. So do you know the purpose of stainless steel annealing tube?

The purpose of stainless steel annealing pipe includes the following three aspects:

1, reduce the hardness, improve the machinability;

2, eliminate residual stress, stable size, reduce the deformation of the steel pipe and the tendency to crack;

3, fine particles, adjust the structure, eliminate organizational defects. In the production, the annealing process is widely used, according to the different purposes of the workpiece annealing, there are a variety of annealing process specifications. Commonly used are complete annealing, spheroidizing annealing and stress relief annealing. Stainless steel welded pipe is a kind of high alloy steel that can resist corrosion whether in the air or in the chemical corrosive medium, 304 stainless steel pipe has a beautiful surface, good corrosion resistance, it does not need to be electroplated and other surface treatment, and plays the inherent surface properties of stainless steel, a steel used in many aspects is usually called stainless steel.