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Low-pressure casting preparing method of as-cast aluminum alloy hub

An aluminum alloy wheel hub and low-pressure casting technology, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of increased energy consumption, tooling, man-hours, labor, complex heat treatment process, and increased manufacturing costs, etc., to simplify production Effects of technological process, reduction of preparation cost and reduction of energy consumption

Inactive Publication Date: 2018-04-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the aluminum alloy wheels that can be applied to passenger cars are prepared by low-pressure casting process. The aluminum alloy wheels need to be heat treated in the follow-up. The heat treatment process is relatively complicated, high energy consumption, and the deformation of the aluminum alloy heat treated at high temperature is serious. It is necessary to correct the aluminum alloy parts after heat treatment, which will further increase the requirements for energy consumption, tooling, working hours and labor, prolong the manufacturing cycle and increase the manufacturing cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The low-pressure casting preparation method of the as-cast aluminum alloy wheel hub of the present example comprises the following steps:

[0021] (1) Step 1, aluminum alloy ratio and smelting:

[0022] With pure aluminum, Al-Si 12 Master alloy, pure magnesium, Al-Mn 10 Master alloy, Al-Sr 10 The master alloy is used as the raw material for preparation. According to the composition of the aluminum alloy: Si: 9.50wt.%; Mg: 2.60wt.%; Mn: 0.15wt.%; Sr: 0.010wt.%; Zn: ≤0.15wt.%; Ti: ≤0.10wt.% ; Fe: ≤ 0.15wt.%; the balance is Al, and the aluminum alloy is prepared. The raw materials for preparing the aluminum alloy are added together into a dry melting furnace, heated to a temperature of 1003 for 1 hour, and an aluminum alloy melt is obtained.

[0023] (2) Step 2, aluminum alloy refining:

[0024] The smelted aluminum liquid is transferred to the holding furnace for heat preservation, and then refined in the furnace. Under the condition of 1023K temperature, the rotary...

Embodiment 2

[0033] The low-pressure casting preparation method of the as-cast aluminum alloy wheel hub of the present example comprises the following steps:

[0034] (1) Step 1, aluminum alloy ratio and smelting:

[0035] With pure aluminum, Al-Si 12 Master alloy, pure magnesium, pure copper, Al-Sr 10 The master alloy is used as the raw material for preparation. According to the composition of the aluminum alloy: Si: 10.20wt.%; Mg: 1.50wt.%; Cu: 0.50wt.%; Sr: 0.010wt.%; Zn: ≤0.15wt.%; Ti: ≤0.10wt.% ; Fe: ≤ 0.15wt.%; the balance is Al, and the aluminum alloy is prepared. The raw materials for preparing the aluminum alloy are added together into a dry melting furnace, and heated to a temperature of 1023K for smelting for 0.5 h to obtain an aluminum alloy melt.

[0036] (2) Step 2, aluminum alloy refining:

[0037] The smelted aluminum liquid is transferred to the holding furnace for heat preservation, and then refined in the furnace. Under the condition of temperature of 1003K, the rotar...

Embodiment 3

[0046] The low-pressure casting preparation method of the as-cast aluminum alloy wheel hub of the present example comprises the following steps:

[0047] (1) Step 1, aluminum alloy ratio and smelting:

[0048] With pure aluminum, Al-Si 12 Master alloy, pure magnesium, Al-Sr 10 The master alloy is used as the raw material for preparation. According to the composition of the aluminum alloy: Si: 9.30wt.%; Mg: 2.25wt.%; Sr: 0.005wt.%; Zn: ≤0.15wt.%; Ti: ≤0.10wt.%; Fe: ≤0.15wt. %; the balance is Al, and the aluminum alloy is prepared. The raw materials for preparing the aluminum alloy are added together into a dry melting furnace, heated to a temperature of 1003K and smelted for 1 hour to obtain an aluminum alloy melt.

[0049] (2) Step 2, aluminum alloy refining:

[0050] The smelted aluminum liquid is transferred to the holding furnace for heat preservation, and then refined in the furnace. Under the condition of 1013K temperature, the rotary air blowing probe is inserted in...

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Abstract

The invention relates to a low-pressure casting preparing method of an as-cast aluminum alloy hub. The method particularly comprises following steps of firstly, aluminum alloy matching and smelting; secondly, aluminum alloy refining; thirdly, strengthened aluminum alloy treatment; fourthly, low-pressure casting forming. According to the technical scheme, aluminum alloy component design, smelting and refining, an Al-5Ti-B intermediate alloy is added for strengthening the aluminum alloy, meanwhile, the content of impurity elements of Fe, Ti and Zn is strictly controlled, and the novel high toughness as-cast aluminum alloy hub free of heat treatment is prepared. The as-cast aluminum alloy hub prepared through the process shows the excellent strength and plasticity, and use needs are met; according to the low-pressure casting preparing method of the as-cast aluminum alloy hub, heat treatment is avoided, a large amount of heat treatment time is saved, and tools, hours and manual work neededby correction after heat treatment are saved, energy consumption is reduced, the production process flow of the aluminum alloy hub is simplified, the preparing cost is reduced, and the important application value is achieved.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing and preparation, in particular to a low-pressure casting preparation method of an as-cast aluminum alloy wheel hub. Background technique [0002] At present, with the rapid development of my country's automobile industry, the pursuit of lighter, faster and more environmentally friendly concepts has gradually become the core strategic goal of the automobile industry. Automotive independent innovation urgently needs advanced, lightweight, high-strength and toughness materials and manufacturing technologies for key automotive components. As an alloy with low density, high specific strength and good corrosion resistance, aluminum alloy will gradually replace part of steel and become an important part of lightweight development. The production and research and development of aluminum alloy structural parts and their materials, especially the research and development of large and complex alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04C22C21/02C22C1/03C22C1/06
CPCC22C1/058C22C1/026C22C1/03C22C1/0416C22C1/05C22C1/06C22C1/1005C22C1/1026C22C1/1036C22C21/00C22C21/003C22C21/02C22C21/08C22C21/14C22C21/16C22C21/18C22C26/00C22C32/0047C22C32/0052C22C32/0073C22C32/0084C22F1/002C22F1/04C22F1/043C22F1/047C22F1/057B82Y40/00B22D18/04B22F3/14B22F3/20B23K35/286B23K35/40B22F2003/208B22F2998/10C22C2026/002B22F1/10C22C1/1052C22C1/1047B22F2009/043B22F3/02B22F2003/248
Inventor 邱丰董柏欣查敏常芳
Owner JILIN UNIV
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