A homogeneous high-strength and toughening magnesium alloy cup-shaped member rotary extrusion method

Abstract

The invention discloses a rotary extrusion method of a homogenous high-toughness magnesium alloy cup-shaped component. The rotary extrusion method of the homogenous high-toughness magnesium alloy cup-shaped component comprises the following steps: (1) blanking a bar material; (2) carrying out homogenizing thermal treatment; (3) heating the whole rotary extrusion mold, wherein the rotary extrusion mold mainly comprises a punch and a forming concave mold for the rotary extrusion cup-shaped component, the punch is connected with an upper rotary workbench of a hydraulic machine with the upper rotary workbench, the surface of a conical body of the end part of the punch in contact with an extrusion billet is provided with non-communicated grooves with certain widths and depths, and a groove is formed in the plane of the bottom of a mold cavity of the forming concave mold; spraying oiling agent graphitic lubricant for a punch operating belt, the non-communicated grooves, the mold cavity and the blank; installing the blank for extrusion into the mold cavity; (4) moving the upper rotary workbench of the hydraulic machine around a rotary axis, loading the blank around the rotary axis, and filling metal extruded into the non-communicated grooves by the punch when the punch moves around the rotary axis continuously in a smoothing-raising-smoothing-raising mode; (5) processing an extrusion element so as to form the magnesium alloy cup-shaped component.

Description

technical field [0001] The invention belongs to the field of metal plastic processing technology and forming technology, specifically a technology for extrusion forming and modification of magnesium alloy materials, in particular to a rotary extrusion method for forming and strengthening and toughening magnesium alloy cup-shaped components. pressure method. Background technique [0002] With the rapid development of aerospace, national defense, transportation and other fields, it is urgent to use high-strength and lightweight components to achieve lightweight, among which cup-shaped components are one of the most representative structural forms. Magnesium alloy has a low density (2 / 3 of aluminum and 1 / 2 of titanium), and is the lightest metal structural material, with good specific strength, specific stiffness, thermal conductivity, electromagnetic shielding, damping and shock absorption, etc. , Widely used in aerospace, transportation, national defense and other fields. T...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose a method for the rotary extrusion of a homogeneous high-strength and toughened magnesium alloy cup-shaped member for the forming and toughening of the magnesium alloy cup-shaped member, which can effectively improve the formability of the magnesium alloy and improve the forming The comprehensive mechanical properties of the components overcome the disadvantages of the large difference in strength in different directions of the magnesium alloy cup-shaped components formed by traditional extrusion

Images