How to reduce the hardness of 304 stainless steel welded pipe?

Knowledge / 2020-06-15 15:03:14

As we all know, the material of 304 stainless steel welded pipe is a very common stainless steel, which is resistant to corrosion and high temperature, and has good processing performance. So how to reduce its hardness during processing? That is to perform on-line bright solution annealing treatment.
 
What is the main purpose of annealing 304 stainless steel welded pipe?
 
1. Reduce hardness and improve cutting workability:
2. Eliminate residual stress, stabilize dimensions, and reduce the tendency of deformation and cracks:
3. Refine the grains, adjust the structure and eliminate the defects of the structure
 
In production, the annealing process is widely used. According to the different annealing requirements of the workpiece, there are a variety of annealing process specifications, commonly used are complete annealing, spheroidizing annealing, and stress relief annealing.

How to reduce the hardness of 304 stainless steel welded pipe?