The solution treatment of supply aisi high quality 28mm diameter stainless steel pipe has many functions, which can make the structure and composition of the steel pipe uniform, eliminate work hardening and improve corrosion resistance. The following is the specific introduction:
1. Make the structure and composition of the steel pipe uniform: This is especially important for raw materials, because the rolling temperature and cooling rate of each section of the hot-rolled wire rod are different, resulting in inconsistent structure. At high temperature, the atomic activity intensifies, the σ phase dissolves, and the chemical composition tends to be uniform, and a uniform single-phase structure is obtained after rapid cooling.
2. Eliminate work hardening: In order to facilitate continued cold working, through solution treatment, the distorted lattice is restored, the elongated and broken grains are recrystallized, the internal stress is eliminated, the tensile strength of the steel pipe is decreased, and the elongation rate is increased.
3. Improve corrosion resistance: carbide precipitation and lattice defects caused by cold working reduce the corrosion resistance of stainless steel. After the solution treatment, the corrosion resistance of the steel pipe recovered to a better state. For supply aisi high quality 28mm diameter stainless steel pipe, the three elements of solution treatment are temperature, holding time and cooling rate.