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Thermal treatment method of Al-Zn-Mg-Cu based aluminum alloy rim

A technology of 1. al-zn-mg-cu, heat treatment method, applied in the field of alloys, can solve the problems affecting the yield and strength increase of the rim indentation process, shorten the total process time, reduce the scrap rate, and improve production. The effect of efficiency

Active Publication Date: 2014-01-01
SHANGHAI UNISON ALUMINUM PRODS
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The problem encountered in the current process is that the strength of the alloy increases after natural aging, which affects the yield of the rim pressing process.

Method used

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  • Thermal treatment method of Al-Zn-Mg-Cu based aluminum alloy rim
  • Thermal treatment method of Al-Zn-Mg-Cu based aluminum alloy rim

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Embodiment Construction

[0017] The heat treatment method for the Al-Zn-Mg-Cu aluminum alloy wheel rim of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, the heat treatment method of the Al-Zn-Mg-Cu aluminum alloy wheel rim of the present invention includes the following steps: S1, extrusion process, online water quenching; S2, processing and shaping; S3, dimple treatment; S4, aging.

[0019] Processing and shaping include: S2.1, round forming; S2.2, welding; S2.3, mechanical shaping; S2.4, mechanical polishing.

[0020] Dimple processing includes: S3.1, regression; S3.2, dimple.

[0021] In the extrusion process, the temperature at the extrusion exit is 520°C to 540°C, and the extrusion speed is greater than 7m / min. The quenching temperature is between 520°C and 540°C. The return temperature is 240°C±5°C, keep warm for 5 to 6 minutes, and cool in water. The aging process parameter is 120° C., heat p...

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Abstract

The invention belongs to the field of alloys, and in particular relates to a thermal treatment method of an Al-Zn-Mg-Cu based aluminum alloy rim. The thermal treatment method comprises the following steps: S1, carrying out an extrusion process and on-line water penetration and quenching; S2, processing and reshaping; S3, carrying out indenting treatment; and S4, ageing. Processing and reshaping comprise the following steps: S2.1, forming a bent circle; S2.2, welding; S2.3, mechanically reshaping; and S2.4, mechanically polishing. The indenting treatment comprises the following steps: S3.1, regressing; and S3.2 indenting. According the thermal treatment method of the Al-Zn-Mg-Cu based aluminum alloy rim, the total process time is greatly shortened, a rejection rate of the indenting process is greatly reduced, the integrated process time of the rim is greatly saved, the production efficiency is improved, meanwhile, after regression treatment, a product has no bad performance.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a heat treatment method for an Al-Zn-Mg-Cu series aluminum alloy wheel rim. Background technique [0002] High-strength aluminum alloys are more and more widely used in the fields of automobiles, transportation, and engineering structures because of their high strength and low weight. The Al-Zn-Mg-Cu system developed based on the Al-Zn-Mg system alloy has higher strength and better corrosion resistance, and plays an outstanding role in the fields of energy saving and efficiency enhancement. The main strengthening phase of Al-Zn-Mg-Cu aluminum alloy is MgZn 2 , the precipitation sequence of the aging strengthening phase is α phase (supersaturated solid solution) → GP area → η phase (MgZn 2 ) → η phase (MgZn 2 ), different performance requirements can be achieved through different heat treatment processes. According to preliminary research, the low-temperature-aged alloy is he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/053
Inventor 罗世兵杨小冬
Owner SHANGHAI UNISON ALUMINUM PRODS