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Al-Mg aluminium alloy material for aluminium hub and method for preparing wafer for aluminium hub

An aluminum alloy material and aluminum alloy technology are applied in the fields of preparing Al-Mg aluminum alloy wafers for aluminum wheels and Al-Mg aluminum alloy materials for aluminum wheels, which can solve the problems of high energy consumption, low production efficiency, and aluminum wheel production technology. Complex process and other problems, to achieve the effect of simplifying production process, improving production efficiency, good forging and spinning performance

Inactive Publication Date: 2014-11-26
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an Al-Mg aluminum alloy material for aluminum wheels, which can solve the problems of complex subsequent aluminum wheel production technology, low production efficiency and high energy consumption, so as to reduce energy consumption and improve production efficiency the goal of

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  • Al-Mg aluminium alloy material for aluminium hub and method for preparing wafer for aluminium hub

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preparation example Construction

[0032] The preparation method of Al-Mg aluminum alloy disc for aluminum wheel hub of the present invention comprises the following steps:

[0033] The first step is to melt the Al-Mg aluminum alloy with the above chemical composition and cast it into a large slab;

[0034] The second step is sawing and milling the large slab;

[0035] 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 450 ° C ~ 490 ° C, and the treatment time is 8 ~ 42 hours;

[0036] The purpose of the homogenization annealing treatment in the present invention 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. D...

Embodiment 1

[0044] The chemical composition is Mg 7.52wt%, Mn 0.65wt%, Ti 0.06wt%, Cr 0.05wt%, Cu 0.008wt%, Zn 0.005wt%, Si 0.080wt%, Fe 0.22wt%, the balance is Al (the rest The Al-Mg aluminum alloy is smelted and cast into a large flat ingot, and then homogenized at 470°C for 16 hours. After cooling, the large flat ingot is sawed, milled, and then reheated to 460°C Carry out hot rolling to a thickness of 120mm, and the final rolling temperature is 345°C;

[0045] Thick plates are punched into discs, then forged and spun to prepare aluminum alloy wheels.

Embodiment 2

[0047] The chemical composition is Mg 7.52wt%, Mn 0.65wt%, Ti 0.06wt%, Cr 0.05wt%, Cu 0.008wt%, Zn 0.005wt%, Si 0.080wt%, Fe 0.22wt%, the balance is Al (the rest The Al-Mg aluminum alloy is smelted and cast into a large slab, then the large slab is sawed, milled, then heated to 470°C and kept for 14h, and then hot rolled to a thickness of 70mm. The final rolling temperature is 360°C;

[0048] 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 aluminium alloy material for an aluminium hub. The Al-Mg aluminium alloy material for the aluminium hub comprises 7.0-8.0wt% of Mg, 0.40-0.80wt% of Mn, 0.04-0.10wt% of Ti, not greater than 0.15wt% of Cr, not greater than 0.20wt% of Zr, not greater than 0.10wt% of Cu, not greater than 0.10wt% of Zn, not greater than 0.20wt% of Si, not greater than 0.30wt% of Fe, and the balance of Al and inevitable impurities. The invention further discloses a method for preparing an Al-Mg aluminium alloy wafer for the aluminium hub. The Al-Mg aluminium alloy wafer material prepared by the method disclosed by the invention is applied to aluminium alloy hub forging, and capable of realizing the effects of avoiding upsetting and reducing forging times; meanwhile, the Al-Mg aluminium alloy material adopted in the method disclosed by the invention is aluminium alloy which cannot be subjected to heat treatment reinforcement, and the prepared aluminium alloy does not need high-temperature long-time solid solution and aging treatment, so that a production process for the aluminium alloy hub is simplified, the production efficiency is increased, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to a material for preparing an aluminum wheel hub, in particular to an Al-Mg aluminum alloy material for the aluminum wheel hub. The invention also relates to a method for preparing Al-Mg 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, aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08B23P15/00
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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