Die and method for angular extrusion forming of annular channel of magnesium alloy cup-shaped component

Abstract

The invention discloses a circular channel and corner based extruding and moulding mold and a circular channel and corner based extruding and moulding method of a magnesium alloy cup-shaped component. The mold mainly adopting a combined die, and the combined die comprises a U-shaped lower die and a T-shaped upper die; the middle part of the T-shaped upper die is provided with a long l-shaped cavity; the T-shaped upper die is arranged on the U-shaped lower die; and the cross section of the cavity of a formed rotor is shaped like a Chinese character 'shan'. A blank is put in the l-shaped cavity in the middle of the T-shaped upper die, the upper end of the blank is extruded by a male die, the metal on the lower end of the blank is deformed by upsetting to flow radially, and while being further deformed by upsetting, the metal is backwards extruded and deformed to flow axially along the wall of a female die, so that the cylindrical wall of the cup-shaped component is formed. By adopting the circular channel and corner based extruding and moulding mold, the magnesium alloy can be greatly improved in forming capacity and significantly refined and compacted in structure, the performance anisotropy of the magnesium alloy cup-shaped component can be reduced, and the manufacturing process of the high-performance magnesium alloy cup-shaped component can be shortened.

Description

Technical field [0001] The invention belongs to the field of metal plastic processing technology and forming technology, in particular to a technology for extrusion forming and modification of magnesium alloy materials, and particularly relates to the forming of magnesium alloy cup-shaped members and the strengthening and toughening of annular channel corner extrusions. Press forming device and method. Background technique [0002] With the rapid development of aerospace, national defense and military industry, transportation and other fields, there is an urgent need to adopt high-strength and light-weight components to achieve light weight. Among them, cup-shaped components are one of the most representative structural forms. Magnesium alloy has low density (2 / 3 of aluminum and 1 / 2 of titanium). It is the lightest metal structure material. It has good specific strength, specific stiffness, thermal conductivity, electromagnetic shielding, damping and shock absorption. It is wide...

AI Technical Summary

Problems solved by technology

At present, most of the ECAP research focuses on the simple shape of the tube or bar, and the cross-section of the extrusion workpiece remains unchanged, while there are few studies on the ECAP extrusion production of the magnesium alloy cup-shaped member.

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