Machining device for metal pipe and machining method of machining device

Abstract

The invention provides a machining device for a metal pipe and a machining method of the machining device, and are used for solving the problems of non-uniform material structure, thick grain structure, low performance and low grain refinement efficiency during extrusion forming of the metal pipe in the prior art. The machining device comprises an extrusion die, a heating sleeve, a rotating assembly and a driving assembly. A metal blank is added into a second die cavity, the pressure borne by a second module is larger than that borne by a first module, after the metal blank in the second die cavity completely enters the first die cavity through a necking cavity under pressure, the pressure of a hydraulic machine is adjusted, the pressure borne by the first module is higher than that borneby the second module, the metal blank in the first die cavity is reversely pressed into the second die cavity, the above steps are repeated multiple times, the rotating assembly is kept rotating, themetal is subjected to extrusion deformation and high-pressure torsion and severe plastic deformation when passing through the necking cavity, refining of the structure of the metal blank is intensified, the grain structure of the metal is more uniform, the comprehensive performance of the metal is effectively improved, and the metal pipe is taken out of the first die cavity after machining is completed.

Description

technical field [0001] The invention relates to the technical field of metal plastic processing and increasing mechanical properties, in particular to a metal pipe processing device and a processing method thereof. Background technique [0002] With the improvement of people's living standards, the requirements for the performance of various tools used in life are getting higher and higher, and the resource consumption and environmental pollution caused by these tools are required to be less and less. Therefore, it is urgent to develop advanced forming methods to realize complex high-performance components to meet the urgent requirements of overall performance and high reliability. One of the important structures of operational reliability, there is an urgent need to use high-performance metals to meet the increasingly high performance requirements of spacecraft for metal materials. However, the metal extrusion forming process still has limitations in forming high-performan...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a metal pipe processing device and its processing method for solving the problems in the prior art The problems of uneven material structure, coarse grain structure, low performance and low grain refinement efficiency of metal pipe during extrusion

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