1: Organization and composition of stainless steel seamless pipe uniform, which is particularly important for raw material, hot-rolled tubes because each section rolling temperature and cooling rate are not the same, resulting in tissue structure is inconsistent. Increased at a high temperature atomic activities, σ phase dissolved chemical composition tends to be uniform, after rapid cooling to obtain a homogeneous single phase.
2: Eliminate work hardening, in order to facilitate continued cold. By solution treatment, recovery distorted lattice, elongated and broken grains recrystallization, to eliminate the internal stress, the wire tensile strength decreases and the elongation increases.
3: Restore the inherent corrosion resistance of stainless steel pipe. Because cold causes carbide precipitation, lattice defects, the corrosion resistance of stainless steel pipes decreased. After solution treatment corrosion resistance of stainless steel seamless return to top condition.
