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Al-Mg-Zn aluminum alloy material for aluminum wheel hubs and method for preparing aluminum wheel hub disk

An aluminum alloy material, al-mg-zn technology, applied in the field of materials for preparing aluminum wheel hubs, can solve the problems of complex process, high energy consumption, low production efficiency, etc., to simplify the production process, improve the alloy structure, and improve production. The effect of efficiency

Inactive Publication Date: 2014-12-10
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an Al-Mg-Zn aluminum alloy material for aluminum wheels, which can solve the problems of complex process, low production efficiency and high energy consumption in the prior art, so as to reduce energy consumption and improve production efficiency the goal of

Method used

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  • Al-Mg-Zn aluminum alloy material for aluminum wheel hubs and method for preparing aluminum wheel hub disk

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preparation example Construction

[0044] The preparation method of Al-Mg-Zn aluminum alloy disc for aluminum wheel hub of the present invention comprises the following steps:

[0045] In the first step, the Al-Mg-Zn aluminum alloy with the above chemical composition is melted and cast into a large slab;

[0046] The second step is sawing and milling the large slab;

[0047] After the casting of the large slab is completed, the large slab can be homogenized before sawing and milling; the temperature of the homogenization treatment of the large slab is 440 ° C ~ 490 ° C, and the treatment time is 10 ~ 36 hours;

[0048] The purpose of homogenization annealing is to prepare the structure for subsequent processing. The main structural changes in homogenization annealing are the elimination of dendrite segregation, the dissolution of non-equilibrium phases and the precipitation of supersaturated transition element phases, and the concentration of solutes is gradually homogenized. During the homogenization anneali...

Embodiment 1

[0056] The chemical composition is Mg 6.73wt%, Zn 1.2wt%, Mn 0.53wt%, Ti 0.06wt%, Cr 0.07wt%, Cu 0.008wt%, Si 0.090wt%, Fe 0.23wt%, the balance is Al (the rest The Al-Mg-Zn aluminum alloy is smelted and cast into a large slab, and then homogenized at 480°C for 12 hours. After cooling, the large slab is sawed, milled, and then reheated to Hot rolling at 460°C to a thickness of 70mm;

[0057] Thick plates are punched into discs, then forged and spun to prepare aluminum alloy wheels.

Embodiment 2

[0059] The chemical composition is Mg 6.2wt%, Zn 0.95wt%, Mn 0.45wt%, Ti 0.05wt%, Cr 0.03wt%, Cu 0.006wt%, Si 0.080wt%, Fe 0.22wt%, the balance is Al (the rest The Al-Mg-Zn aluminum alloy is smelted and cast into a large slab, and then the large slab is sawed, milled, and then heated to 480°C and kept for 12h, and then hot-rolled to 70mm thickness;

[0060] Thick plates are punched into discs, then forged and spun to prepare aluminum alloy wheels.

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Abstract

The invention discloses an Al-Mg-Zn aluminum alloy material for aluminum wheel hubs, which comprises 6.0wt%-7.5wt% of Mg, 0.90wt%-1.50wt% of Zn, 0.20wt%-0.70wt% of Mn, 0.05-0.15wt% of Ti, 0.0005wt%-0.005wt% of Be, at most 0.20wt% of Cr, at most 0.20% of Zr, at most 0.10wt% of Cu, at most 0.20wt% of Si, at most 0.30wt% of Fe, and the balance of Al and inevitable impurities. The invention also discloses a method for preparing an Al-Mg-Zn aluminum alloy disk for aluminum wheel hubs. The Al-Mg-Zn aluminum alloy material for aluminum wheel hubs has favorable forging and rotary extrusion properties; and the prepared wheel hub has higher strength and toughness.

Description

technical field [0001] The invention relates to a material for preparing an aluminum wheel hub, in particular to an Al-Mg-Zn aluminum alloy material for the aluminum wheel hub. The invention also relates to a method for preparing Al-Mg-Zn aluminum alloy discs for aluminum wheel hubs. Background technique [0002] At present, the automobile industry is developing in the direction of light weight, high speed, safety, energy saving, comfort and low environmental pollution, so the amount of aluminum alloy parts used in automobiles is increasing day by day. As one of the important parts in the driving system of the car, the wheel hub is also a kind of security device with high requirements. It not only bears the weight of the car, but also reflects the appearance of the car. In the past ten years, the average annual growth rate of the global aluminum alloy automobile wheel production has reached 7.6%. It can be seen that with the increasing demand for lightweight automobiles, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/08C22F1/047B23P15/00
Inventor 朱其柱李书通丁荣辉王新春张超茅海波
Owner ZHEJIANG GKO IND CO LTD
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