Process introduction:Stainless steel pipe internal polishing

here are two main methods of polishing the inner wall of stainless steel pipes:

1. Mechanical polishing

Insert the throwing rod into the pipe to drive the impeller or the self-made abrasive belt wheel to rotate at high speed, and polish with the rotation of the steel pipe itself, and slowly advance the throwing rod while rotating. If you feel that the mechanical polishing is not bright enough, you can apply polishing paste to increase the brightness during fine polishing.

2. Electropolishing

Electrolytic polishing uses the workpiece to be polished as the anode and the insoluble metal as the cathode. The two poles are simultaneously immersed in the electrolytic tank, and a direct current is applied to produce selective anode dissolution, thereby achieving the effect of increasing the surface brightness of the workpiece.

After the final stainless steel tube is polished, because the surface oxide layer is damaged, it is finally treated with acid solution for surface passivation, otherwise it is easy to rust.