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Preparation process and extrusion die for magnesium alloy pipe under multiple strain paths

A preparation process and extrusion die technology, applied in the preparation process and extrusion die field of magnesium alloy pipes under multi-strain paths, can solve the problem of strong extrusion texture, low degree of grain refinement, tension-compression asymmetry, etc. problems, to achieve good electrical and thermal conductivity, good electromagnetic shielding performance, and broaden the scope of application.

Pending Publication Date: 2021-04-30
HARBIN INST OF TECH -WEIHAI INNOVATION PARK WEIHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation process and extrusion die for magnesium alloy pipes under multiple strain paths, which solves the problems of strong extrusion texture, serious tension and compression asymmetry and grain refinement in existing magnesium alloy processing methods Improve the comprehensive mechanical properties of magnesium alloys

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  • Preparation process and extrusion die for magnesium alloy pipe under multiple strain paths
  • Preparation process and extrusion die for magnesium alloy pipe under multiple strain paths
  • Preparation process and extrusion die for magnesium alloy pipe under multiple strain paths

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Embodiment Construction

[0031] In order to illustrate the technical features of the solution more clearly, the solution will be described below through specific implementation modes.

[0032] A preparation process for magnesium alloy pipes under multiple strain paths, characterized in that it comprises the following steps:

[0033] Step S1: preparing rod-shaped magnesium alloy blanks and high-temperature graphite powder;

[0034] Step S2: performing heat treatment on the magnesium alloy blank, and slowly cooling in air;

[0035] Step S3: Carry out extrusion preheating treatment again;

[0036] Step S4: placing the heated magnesium alloy billet in an extruder, and placing the magnesium alloy billet in the extruder after the extrusion punch and die are heated;

[0037] Since the shear extrusion channel is corrugated, it can produce multiple extrusion deformations;

[0038] Step S5: Grinding and cleaning the extruded magnesium alloy pipe.

[0039] In step S4, the inner surface of the extrusion die i...

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Abstract

The invention provides a preparation process and an extrusion die for a magnesium alloy pipe under multiple strain paths. The preparation process comprises the following steps of: preparing a rod-shaped magnesium alloy blank and high-temperature graphite powder; performing heat treatment on the magnesium alloy blank, and slowly cooling in air; performing extrusion preheating treatment again; putting the heated magnesium alloy blank into an extruder, heating an extrusion male die and an extrusion female die in the extruder, and putting the magnesium alloy blank into the extruder; extruding and deforming for multiple times because a shearing and extruding channel is corrugated; and polishing and cleaning the extruded magnesium alloy pipe. According to the preparation process and the extrusion die for the magnesium alloy pipe under the multiple strain paths, the technical problems of strong extrusion texture, severe tension-compression asymmetry, low grain refinement degree and the like existing in the conventional magnesium alloy processing method are solved, and the comprehensive mechanical property of magnesium alloy is improved.

Description

technical field [0001] The invention belongs to the technical field of plastic processing of nonferrous metals, and in particular relates to a preparation process of magnesium alloy pipes under multiple strain paths and an extrusion die. Background technique [0002] In recent years, magnesium and magnesium alloys have received extensive attention due to their unique and excellent comprehensive mechanical properties, and are currently the lightest metal structural materials. Because magnesium and magnesium alloys have excellent performance characteristics, such as: low density, light weight, excellent electrical and thermal conductivity, high specific strength and specific stiffness, good electromagnetic shielding performance, and excellent machinability. It is easy to recycle, so magnesium and magnesium alloys have excellent application prospects, and have been widely used in military, aerospace and digital electronic products and other fields. However, due to the defects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02B21C25/02
CPCB21C23/02B21C25/02
Inventor 杨建雷张文丛陈文振崔国荣王文珂
Owner HARBIN INST OF TECH -WEIHAI INNOVATION PARK WEIHAI
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