Deep cavity type hot extrusion mold for aluminum alloy joint members and preparation method thereof

Abstract

A deep cavity type hot extrusion mold for aluminum alloy joint members and a preparation method thereof belong to the fields of hot process molds and designs thereof, and are applicable to hot extrusion mold design and hot extrusion formation of aerospace joint members. The mold includes an upper mold plate (1), a punch fixing plate (2), a stress ring (3), a die (4), a die plate (5), a lower moldplate (6), a top rod (7), a punch (8) and a position limiting block (9). The mold has the advantages that a guide design between the punch (8) and the die (4) ensures that the mold is intact in profile without misalignments when closed without help of a guide device such as a guide post and a guide sleeve; that two-stage transition steps of the top rod (7) and a withdrawing design can not only increase the fitting strength of the top rod with the die but also reduce edge extrusion to facilitate demolding of a member; the overall shape of the mold is a circumferential type so that a medium frequency induction heating method can be adopted with high heating efficiency and good temperature uniformity; and the aluminum alloy joint members formed by the mold have stable quality, high dimensional accuracy and profile precision.

Description

technical field [0001] The invention relates to a deep-cavity hot extrusion die for an aluminum alloy joint member and a preparation method thereof, belonging to the technical field of hot processing dies. Background technique [0002] At present, aerospace product parts are developing in the direction of light weight, complexity and integration. Aluminum alloy materials are widely used in aerospace, rail transportation, weaponry and other fields due to their excellent performance, while the amount of aluminum alloy joint components Large, performance demanding and complex shapes. [0003] Due to the complex shape of aluminum alloy joint components, free forging is often used for machining. However, this process faces problems such as large amount of machining, low material utilization rate, and low production efficiency. Closed hot extrusion near-net forming can form aluminum alloy joint components with stable quality and high dimensional accuracy, and a small amount of fi...

AI Technical Summary

Problems solved by technology

[0003] Due to the complex shape of aluminum alloy joint components, free forging is often used for machining, but this process faces problems such as large amount of machining, low material utilization rate, and low production efficiency.

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