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

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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 ti

Method used

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Examples

Experimental program
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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

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Claims

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Application Information

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Owner ZHEJIANG GKO IND CO LTD
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