Magnesium alloy continuous extrusion die

Abstract

The invention relates to a magnesium alloy continuous extrusion die, and the continuous extrusion die is formed by assembling and fixing a left half die and a right half die together and forming a direct extrusion channel, a plurality of divergent extrusion channels, a plurality of forming channels, change channel angles and equal channel angles. The diameters of the divergent extrusion channels are the same, the sum of the diameters of the divergent extrusion channels is equal to the diameter of the direct extrusion channel, 90-degree rotation angles between the divergent extrusion channels and the direct extrusion channel are the change channel angles, the diameters of the forming channels which are communicated with the divergent extrusion channels are the same, and the 90-degree rotation angles between the forming channels and the divergent extrusion channels are the equal channel angles. The magnesium alloy continuous extrusion die can improve the industrial production efficiencyof magnesium alloy deformation and extrusion through continuous extrusion.

Description

technical field [0001] The invention relates to a magnesium alloy extrusion molding die, in particular to a magnesium alloy continuous extrusion die capable of continuously extruding and deforming the magnesium alloy. Background technique [0002] Magnesium alloy is currently the lightest metal structure material. It has electrical conductivity, thermal conductivity, and electromagnetic shielding properties. At the same time, it has good performance, high specific strength and specific stiffness, good shock absorption, good cutting processing and dimensional stability, and is easy to recycle. It is beneficial to environmental protection and other advantages, and is known as "the green engineering material of the 21st century". With the development of light weight in industries such as automobiles, aviation, electronics and transportation, the application range of magnesium alloys is becoming wider and wider. Magnesium alloys are divided into cast magnesium alloys and wrought...

AI Technical Summary

Problems solved by technology

However, if a single variable channel angle extrusion die is used to extrude magnesium alloy, when the magnesium alloy billet passes through the variable channel angle, a banded structure will appear, and the uniformity of the grain will become poor, which will reduce the mechanical properties of the magnesium alloy.

And the extrusion ratio of the existing variable-channel angular extrusion is usually controlled within 10:1, as once the extrusion ratio reaches or exceeds 10:1, the magnesium alloy is easy to crack, and when the extrusion speed is greater than 2m / min After that, the mold is also easy to crack and cause damage

[0006] From the above-mentioned magnesium alloy deformation extrusion die, if it is necessary to extrude and deform the magnesium alloy billet with a thicker diameter into a profile with a thinner diameter, it must be completed through multi-pass extrusion. The large diameter is gradually extruded to the small diameter in passes. Every time the diameter of the extrusion channel is changed, the mold must be removed and replaced. The procedures are many and complicated, which wastes time and resources in actual production; especially the use of variable channel Angle extrusion die, after the extrusion ratio of each pass reaches 10:1, the extruded material is prone to cracks, which affects product quality

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