Electrolytic polishing is required for higher precision, and most of the polishing of 2205 stainless steel seamless pipes is mechanical polishing. It is divided into two parts: inner surface polishing and outer surface polishing. Mechanical polishing: For inner surface polishing (using an internal polishing machine), a throwing rod is inserted into the pipe to drive the thousand impeller or self-made abrasive belt wheel to rotate at high speed, and the polishing is carried out with the rotation of the steel pipe itself, and the throwing rod is slowly advanced while rotating. Generally speaking, first use 60#-80# thousand impellers or abrasive belt wheels for rough polishing, and then gradually use high-precision fine polishing according to the requirements of smoothness. Large-sized pipes above 6 generally use thousand impellers, and small-sized 2205 stainless steel seamless pipes can use self-made abrasive belt wheels, which can reduce costs. If you feel that the mechanical polishing is not bright enough, you can apply polishing paste appropriately to increase the brightness during fine polishing.

 Polishing electropolishing is to use the polished workpiece as the anode, the insoluble metal as the cathode, the two poles are immersed in the electrolytic cell at the same time, and the direct current is applied to produce selective anode dissolution, so as to achieve the effect of increasing the surface brightness of the 2205 stainless steel seamless pipe workpiece. . For details, you can find out what is electropolishing by searching for it! After polishing, 2205 stainless steel seamless pipe is damaged because of the damage to the surface oxide layer. It is best to use acid solution for surface passivation treatment, otherwise it will easily rust.