Semi-solid magnesium alloy gradient extrusion combination die

Abstract

The invention provides a semi-solid magnesium alloy gradient extrusion combination die. The left side of a supporting plate of the die is fixedly connected with a casting-rolling machine rack througha bolt, the right side of the supporting plate of the die is connected with a temperature control room through a bolt, and the interior of the die is connected with a diversion room, a male die and afemale die in an interference fit manner. The supporting plate is connected with the diversion room through a bolt, the right side of the diversion room is connected with the male die and the female die in a clearance fit manner, and the right end of the temperature control room is connected with a support through a bolt. The support is connected with the female die through a bolt, the left end ofa core bar is fixed to the male die, and the axis of the core bar coincides with the axis of the female die. In other words, a core is in interference fit with a core hole, a solution enters a diversion hole through a diversion bridge in a diversion manner, then enters a welding room and finally flows out of the core hole, backward spiral type cooling liquid is distributed on the periphery of themale die and the periphery of the female die, and therefore the solution solid phase rate is controlled. By means of the semi-solid magnesium alloy gradient extrusion combination die, the texture distribution is effectively improved, the anisotropy is weakened, the plastic forming capability of products is improved, and energy is saved; and the beneficial effects that the production capacity is high, the quality is high, flexibility is high, and production is stable are achieved.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy processing, in particular to a semi-solid magnesium alloy gradient extrusion combined die. Background technique [0002] Magnesium alloy has many advantages such as light weight, high specific strength, good heat dissipation and shock absorption, good precision formability, and recyclability. It is an ideal choice for aerospace, rail transit, automobile, portable military and civilian products metal structure materials. However, magnesium and magnesium alloys have poor plasticity, easy cracking, fast heat dissipation, low ductility, and poor plastic processing ability, which hinder the further development and application of magnesium alloys. As an important process for the production of magnesium alloy profiles, extrusion processing is widely used in the production of magnesium alloys due to its compactness and strong performance. [0003] At present, most of the magnesium alloy profiles ...

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Problems solved by technology

[0005] The object of the present invention is a semi-solid magnesium alloy gradient extrusion combination die, which can effectively solve the problem of poor bearing capacity, prominent anisotropy, limited specifications, and long conventional rolling production process in existing extrusion production of magnesium alloy welded pipes. , Poor flexibility, low production capacity, high production cost and other technical problems

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