Manufacturing equipment of small diameter stainless pipe

摘要

The present invention relates to a device for manufacturing a high pressure small diameter stainless steel pipe for industrial use.;According to the present invention, after cold rolling stainless steel to a certain thickness and inspecting internal defects using an X-ray inspection machine, a stainless steel sheet without internal defects is cut to a width suitable for the diameter of a small diameter tube and wound ( The winding 12 is inserted into the unwinding 31 of the tube jointer, and the five pairs of tube rollers 21 are passed through the front end 11 of the stainless steel sheet to gradually step through the flat stainless steel sheet. When rounded in the form of a tube and completely rounded, TIG welding 33 is performed on the portions 42 where both edges of the stainless steel sheet are engaged with each other, so that the tube has sufficient strength without making a large bead inside and outside the tube. In order to prevent the discoloration of the steel pipes by performing annealing heat treatment in an inert gas to remove the residual stress of the stainless steel pipes (51) generated due to high heat during the welding process. In addition to improving the surface quality by reduction and to maintain a uniform mechanical properties to produce a small diameter steel pipe that can withstand the ultra-high pressure. The small diameter stainless steel pipes manufactured in this way can be used for remote control piping of ships, machine tools, and other industrial devices, so that many strands can be piped in a narrow space, and it is easy to repair and maintain. It is a small diameter stainless steel pipe manufacturing apparatus that is expected to increase greatly.