Circular channel and corner based extruding and moulding mold and circular channel and corner based extruding and moulding method 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, in particular to an annular channel corner extrusion for forming and strengthening and toughening magnesium alloy cup-shaped components Compression forming apparatus and 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,...

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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