Quenching equipment used for large complex thin-wall aluminum alloy castings and application method thereof

An aluminum alloy casting, complex technology, applied in the direction of quenching device, heat treatment equipment, heat treatment process control, etc.

Active Publication Date: 2013-12-25
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex structure, thin wall, large size, and the combined effects of heating, cooling, stress and other factors in the heat treatment process, the castings are often deformed seriously. Even after multiple passes of artificial correction, the pass rate of castings is still low. , it is difficult to meet the product design requirements for high-quality, high-precision castings
At present, relevant research has been carried out in China on the problem of severe heat treatment deformation of large and complex thin-walled aluminum alloy castings, mainly focusing on optimizing quenching media and quenching methods to reduce quenching distortion of large castings, and developing new processes for deformation correction after heat treatment, etc., and achieved It has a certain effect, but the deformation after heat treatment is still relatively large, which cannot meet the requirements of dimensional accuracy

Method used

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  • Quenching equipment used for large complex thin-wall aluminum alloy castings and application method thereof
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  • Quenching equipment used for large complex thin-wall aluminum alloy castings and application method thereof

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Embodiment Construction

[0041]Embodiment, this embodiment takes a large complex aluminum alloy shell casting as the application object, the specific outline dimensions: height 750mm, small end circle Φ286.5mm, large end rectangular 376.7mm×413.4mm, main body wall thickness 2.9mm, inner cavity Multi-boss, ribs, material: ZL114A.

[0042] See the summary of the invention for the operation steps.

[0043] The main working parameters are as follows: casting solid solution temperature 535±5℃; holding time 12~14h; PAG water-soluble polymer heating temperature 35~40℃; casting transfer time within 15s; spray water pressure 0.05~0.3MPa; quenching time 25 ~35s.

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Abstract

The invention provides a set of equipment used for realizing rapid and uniform cooling of castings, reducing deformation of castings and improving mechanical properties in quenching processes of large complex thin-wall aluminum alloy castings.

Description

technical field [0001] The invention relates to a set of devices for realizing rapid and uniform cooling in the quenching process of large complex thin-walled aluminum alloy castings and a use method thereof. Background technique [0002] In the fields of aerospace, weapon equipment, automobiles, ships, etc., the demand and application of large complex thin-walled castings, especially large complex thin-walled aluminum alloy cabins and box castings are becoming more and more extensive. [0003] After forming large complex thin-walled aluminum alloy castings, subsequent heat treatment modification is generally required to improve its strength, hardness, fatigue resistance, etc. However, due to the complex structure, thin wall, large size, and the combined effects of heating, cooling, stress and other factors in the heat treatment process, the castings are often deformed seriously. Even after multiple passes of artificial correction, the pass rate of castings is still low. , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/667C21D11/00
Inventor 陈强黄志伟唐全波宁海青舒大禹夏祥生黄树海赵志翔
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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