Threaded pipe production process

Abstract

The invention relates to the technical field of metal pipe machining, in particular to a threaded pipe production process which needs to use threaded pipe production equipment, an inner core and traction equipment for traction of a pipe. During production, the threaded pipe production process comprises the following steps of 1, reducing the diameter of the pipe, wherein the pipe is continuously subjected to traction by the traction equipment to move forwards, when the pipe moves forwards to the position between a moving drawing die and a moving core head, the moving core head rotates continuously, and the diameter of the pipe is reduced under the rotation of the moving core head and the traction of the traction equipment; 2, forming threads, wherein the pipe moves forwards to the position between a spinning ring and a threaded core head of the inner core, internal threads are formed on the inner wall of the pipe, cooling of the pipe, the spinning ring and the inner core is achieved in the pipe thread forming process, and meanwhile, lubricating of the spinning ring is achieved; and 3, sizing a threaded pipe, wherein the pipe is sized through a sizing die. The scheme is used for solving the problems that in the prior art, a large amount of heat generated in spinning forming affects the spinning forming quality, and the service life of the spinning ring and the inner core is shortened.

Description

technical field [0001] The invention relates to the technical field of metal pipe processing, in particular to a threaded pipe production process. Background technique [0002] On some soft metal pipes, such as copper pipes and aluminum pipes, sometimes it is necessary to process internal threads to enhance the heat dissipation effect or heat conduction effect of the metal pipes. The processed pipes with internal threads are called threaded pipes. , the threaded pipe is generally formed by spinning, and the spinning ring and the inner core are needed for spinning, and there are steel balls on the spinning ring. The threaded core head and the floating core head are fixed. When the spinning ring rotates, the inner core rotates as a whole; during the spinning process, the inner core is located in the pipe, and the spinning ring covers the pipe, using the steel ball on the spinning ring Squeeze the outer wall of the pipe, and roll the metal on the pipe to the tooth groove of th...

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a threaded pipe production process to solve the problems in the prior art that a large amount of heat generated during spinning affects the quality of spinning and reduces the service life of spinning rings and inner cores

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