What is the use of stainless steel blind flange solution treatment？

　　Solution treatment refers to the heat treatment process in which the alloy is heated to a high temperature single-phase zone and kept at a constant temperature, so that the excess phase can be fully dissolved in the solid solution and then cooled quickly, so as to obtain supersaturated solid solution.

　　1. Stainless steel blind flange is mainly to improve the plasticity and toughness of steel and alloy and prepare for precipitation hardening treatment.

　　2. The results show that the structure and composition of stainless steel are uniform: at high temperature, the atomic activity is intensified, σ phase dissolves, and the chemical composition tends to be uniform.

　　3. Stainless steel blind flange can fully dissolve all kinds of phases in the alloy, strengthen solid solution, improve toughness and corrosion resistance, eliminate stress and soften, so as to continue processing or forming.

　　4、 Eliminate work hardening to facilitate continued cold working. After solution treatment, the distorted lattice is restored, the elongated and broken grains are recrystallized, and the internal stress is eliminated.

　　5. Restore the corrosion resistance of ASTM A182 900# DN400 Stainless Steel Blind Flange. Due to the carbide precipitation and lattice defect caused by cold working, the corrosion resistance of stainless steel decreased. The corrosion resistance of stainless steel recovered to a good state after solution treatment.