There will be many pits on the surface of the honing tube before processing, which is an important reason for affecting the quality of the honing tube, so these pits need to be treated. You can refer to the following methods:
1. Deformation of cold drawing
Increasing the number of cold drawing deformation passes and the total deformation can achieve the purpose of reducing pitting and reducing the honing and grinding allowance.
2.hot-rolled tube blanks
Cold drawn pipe pits are caused by hot-rolled pipes. Therefore, pitting can be reduced by selecting hot-rolled pipes with small corrosion and uniform wall thickness.
3. Cleaning inside the hot-rolled tube
According to data analysis, Japanese, German and other companies produce cold-drawn pipes. Before cold-drawing, the hot-rolled pipes are cleaned on the inner surface, so that the inner hole of the cold-drawn pipe is free of pitting, etc., so that the machining allowance of honing reaches a low point and reduces Production costs increase production efficiency.
