Abstract:
In order to study the industrial application effect of Te metallurgy in 303Cu stainless steel, the industrial production test of adding Te to 303Cu stainless steel was carried out. The influence of Te addition on the corrosion resistance of 303Cu free-cutting stainless steel was investigated, and the influence of Te on the corrosion resistance of 303Cu was verified. The morphology, size distribution, cutting performance, corrosion resistance, and hardness change of sulfide in 303Cu stainless steel and 303Cu telluride modified casting billet and rolling material was compared and analyzed using Zeiss metallographic microscope, scanning electron microscope, three-dimensional corrosion etching, surface roughness analyzer, salt spray test, and microhardness. The results show that the length and width of the sulfide in the 303Cu stainless steel (Te modified) billet are smaller, the distribution is more uniform, and the hardness of the sulfide increases. After the Te modified 303Cu rolling material, the sulfide changes from a long strip to a spindle, which effectively inhibits the deformation of the sulfide in the rolling process. After TE modification, the proportion of C-type chips increases, and the surface roughness decreases. After TE modification, the corrosion area of the rolled material decreased compared with the original sample under 120 h and 240 h neutral salt spray test.