Aluminum alloy hub forging method

A technology of aluminum alloy wheels and wheels, which is applied in the directions of wheels, wheels, transportation and packaging, etc., can solve the problems that the tensile strength, yield strength, elongation and weight cannot meet the requirements of the wheels, so as to reduce weight and solve the problem of easy oxidation Effect

Active Publication Date: 2015-03-25
JIANGSU POMLEAD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitations of the 6061 material and the forging of the existing common forging method, its best mechanical properties can only reach a tensile strength of 350Mpa, a yield strength of 320Mpa, and an elongation of about 12%, and a piece of 6061 aluminum alloy The finished truck wheel hub is about 25kg, so its tensile strength, yield strength, elongation and weight can no longer meet the requirements of existing truck wheels

Method used

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  • Aluminum alloy hub forging method

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1, a method for forging an aluminum alloy wheel hub, including the following steps, (1) material preparation: using a cast rod whose main material is Al as the base material, and homogenizing the cast rod before blanking, the cast rod In addition to Al, it also contains the following mass percentages: 0.04-0.06% for Si, 2-2.3% for Mg, 1.3-1.5% for Cu, 0.1-0.25% for Fe, 0.03-0.05% for Mn, and 5.1% for Zn -5.4%, Ti 0.03-0.05%, Cr 0.15-0.25%; (2) Cutting: Saw the cast rod with a sawing machine into a bar with a weight of 35.8-36.2Kg, and put it in at a temperature of 460-490°C (3) Forging: Use a pressure forging machine to pre-forge the front of the cast rod to form a bowl shape, and then use a pressure forging machine to forge the reverse side of the cast rod once to form a barrel shape, and finally roll the cast rod through a spinning machine to obtain a forging billet, which is in the shape of a wheel hub; (4) heat treatment: the forging billet is solution tr...

Embodiment 2

[0016] Embodiment 2, in the aluminum alloy wheel hub forging method described in Embodiment 1: the diameter of the cast rod is 254mm.

Embodiment 3

[0017] Example 3, in the aluminum alloy wheel hub forging method described in Example 1 or 2: In addition to Al, the cast rod also contains the following substances in mass percentages: Si is 0.044%, Mg is 2.2%, and Cu is 1.4%. , Fe is 0.11%, Mn is 0.04%, Zn is 5.3%, Ti is 0.035%, Cr is 0.18%, and the balance is Al.

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Abstract

The invention discloses an aluminum alloy hub forging method. The aluminum alloy hub forging method comprises the following steps that (1) materials are prepared; (2) feeding is conducted; (3) a forged blank is obtained through forging, wherein the forged blank is in the form of a rim of a hub; (4) heat treatment is conducted; (5) a semi-finished hub is obtained through machining; (6) anti-oxidation treatment is conducted, so that a finished aluminum alloy hub is obtained. According to the mechanical properties of the aluminum alloy hub obtained by means of a special casting bar through forging and heat treatment, the tensile strength can reach 570MPa, the yield strength can reach 540MPa, and the ductility can reach 15%. Compared with a truck hub in the same specification, the weight can be reduced to 17.2 kg, and the weight of the hub is greatly reduced; due to the fact that the anti-oxidation treatment is conducted on the hub, the problem that an existing aluminum alloy hub is prone to oxidation can be effectively solved, and the requirements for hubs of existing trucks can be met.

Description

technical field [0001] The invention relates to a processing technology of an automobile wheel hub, in particular to a forging method of an aluminum alloy wheel hub. Background technique [0002] At present, the aluminum alloy wheel forging used in China is 6061 aluminum alloy (the national standard is LD30). Compared with the traditional steel wheel, it has the advantages of light weight, beautiful appearance and good heat dissipation. However, due to the limitations of the 6061 material and the forging of the existing common forging method, its best mechanical properties can only reach a tensile strength of 350Mpa, a yield strength of 320Mpa, and an elongation of about 12%, and a piece of 6061 aluminum alloy The finished truck wheel hub is about 25kg, so its tensile strength, yield strength, elongation and weight can no longer meet the requirements of existing truck wheels. Contents of the invention [0003] The technical problem to be solved by the present invention is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21K1/40C22C21/10C22F1/053
CPCB23P15/00B60B27/00
Inventor 万金华陆乃千
Owner JIANGSU POMLEAD CO LTD
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