Piercing Machine


In the production of seamless steel tubes, the role of the perforation process is to pass a solid tube blank into a hollow capillary tube. The whole production process generally includes perforating, rolling and reducing and reducing processes. Perforation, as the first process of metal deformation, has a thicker wall, shorter length, and poorer internal and external surface quality, so it is called a capillary tube. If there are some defects in the capillary tube, it is difficult to eliminate or mitigate it through the subsequent processes. The perforation methods of the tube blank include pressure perforation, push perforation and diagonal perforation.