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Manufacturing method of aluminum alloy hub

A technology of an aluminum alloy wheel hub and a manufacturing method, which is applied in wheel manufacturing, wheel hubs, wheels, etc., can solve the problems of long production cycle and high energy consumption, and achieve short preheating time, stable mechanical properties, high yield strength and elongation. Effect

Active Publication Date: 2014-05-28
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing forged aluminum alloy wheels usually use Al-Mg-Si alloy as the raw material. After the wheel hub is formed, it needs a long time of solid solution and aging to strengthen the aluminum alloy, which has the disadvantages of long production cycle and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] Take a 17-inch automotive aluminum alloy wheel as an example:

[0055] The chemical composition is Mg 6.4%, Mn 0.65%, Cr 0.05%, Be0.002%, Ti0.06%, Si0.12%, Fe0.21%, Al not less than 92.5% (the rest are unavoidable impurities ) Al-Mg alloy hot-rolled plate punched into a round cake-shaped blank with a size of Φ350×65mm;

[0056] Preheat the round cake-shaped blank to 450°C; before the forging work, preheat the mold to 430°C in 20 minutes, separate the upper mold and the lower mold, spray lubricant on the working surface of the mold, and put the high-temperature preheated round Put the cake-shaped blank into the mold, and extrude it with a forging press to make a forging blank, so that the wheel hub is initially formed;

[0057] Heat the forging blank to 350°C, spin the forging blank into a hollow rotating body hub on the spinning machine; then keep the spinning blank in a continuous annealing furnace at 200°C for 2 hours; finally machine the hub and perform subsequent s...

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Abstract

The invention discloses a manufacturing method of an aluminum alloy hub. The manufacturing method comprises the following steps: step 1, preparing materials; step 2, preheating; step 3, forging and pressing; step 4, spinning; step 5, performing stabilizing treatment; step 6, performing mechanical processing and surface treatment. The manufacturing method can be used for reducing the blank preheating time and omitting a solid dissolving and aging thermal treatment process; the product is high in yield and stable in mechanical performance, the energy consumption can be obviously reduced, and the production efficiency is improved. The aluminum alloy hub manufactured by virtue of the method has better mechanical performance and higher tensile strength, yield strength and elongation, and can completely achieve various performance requirements of the hub.

Description

technical field [0001] The invention relates to a method for manufacturing a wheel hub, in particular to a method for manufacturing an aluminum alloy wheel hub. 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, aluminum alloy wheels are gradually replacing traditional steel wheels in modern automobile manufacturing and are widely used...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B60B27/00B60B2310/208B60B2310/224B60B2360/104B60B2360/106C22F1/047
Inventor 李书通王新春朱其柱茅海波张超丁荣辉
Owner ZHEJIANG GKO IND CO LTD
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