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Aluminum alloy automobile hub casting process

A technology of automobile wheel hub and casting process, which is applied in the field of casting, and can solve the problems of poor surface quality of castings, large steel hub mass, and large inertial resistance, etc., and achieve the effect of good surface quality, good fluidity, and good plasticity

Inactive Publication Date: 2016-04-27
SUZHOU HUACHONG PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A car wheel is a cylindrical metal part in a car tire that is centered on the shaft to support the tire. The car wheel is an important part of auto parts. The wheels on the market can be divided into steel wheels and alloy wheels according to their materials. Steel wheels Large mass, large inertial resistance, poor heat dissipation, and very easy to rust, alloy wheels have better performance than steel wheels, alloy wheels are generally made by casting process, but due to the fluidity of metal liquid, temperature and pressure during casting Improper control and other problems, the surface quality of alloy profile castings is not good, and castings need subsequent machining

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A casting process for an aluminum alloy automobile wheel hub, comprising the steps of:

[0014] a. Metal smelting: Al-Si-Mg ternary alloy aluminum material is smelted into alloy liquid at a high temperature of 700°C. The composition and mass ratio of each composition of the Al-Si-Mg ternary alloy are: silicon 5% , magnesium 1%, iron 0.5%, copper 0.7%, zinc 0.1%, manganese 0.07%, titanium 0.5%, aluminum 92.13%;

[0015] b. Pouring: Low-pressure pouring is used. Before pouring, the mold temperature is controlled at 350°C, the pouring temperature is controlled at 600°C, the filling pressure is 0.02MPa, the filling time is 7s, the solidification holding pressure is 0.05MPa, and the holding time is 8min. Release the mold after cooling down.

Embodiment 2

[0017] A casting process for an aluminum alloy automobile wheel hub, comprising the steps of:

[0018] a. Metal smelting: use Al-Si-Mg ternary alloy aluminum material to smelt into alloy liquid at a high temperature of 750°C. The composition of the Al-Si-Mg ternary alloy and the mass ratio of each composition are: silicon 7% , magnesium 0.6%, iron 0.2%, copper 0.5%, zinc 0.15%, manganese 0.08%, titanium 0.2%, aluminum 91.27%;

[0019] b. Pouring: Low-pressure pouring is used. Before pouring, the mold temperature is controlled at 330°C, the pouring temperature is controlled at 650°C, the filling pressure is 0.02MPa, the filling time is 8s, the solidification holding pressure is 0.05MPa, and the holding time is 9min. Release the mold after cooling down.

Embodiment 3

[0021] A casting process for an aluminum alloy automobile wheel hub, comprising the steps of:

[0022] a. Metal smelting: Al-Si-Mg ternary alloy aluminum material is smelted into alloy liquid at a high temperature of 750°C. The composition of the Al-Si-Mg ternary alloy and the mass ratio of each composition are: silicon 8% , magnesium 0.5%, iron 0.1%, copper 0.2%, zinc 0.05%, manganese 0.02%, titanium 0.4%, aluminum 90.73%;

[0023] b. Pouring: Low-pressure pouring is used. Before pouring, the mold temperature is controlled at 370°C, the pouring temperature is controlled at 700°C, the filling pressure is 0.03MPa, the filling time is 9s, the solidification holding pressure is 0.06MPa, and the holding time is 10min. Release the mold after cooling down.

[0024] The invention discloses a casting process of an aluminum alloy automobile wheel. The process is simple and easy to control. The self-made Al-Si-Mg ternary alloy is used for low-pressure casting molding. The alloy has goo...

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PUM

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Abstract

The invention discloses an aluminum alloy automobile hub casting process which comprises the following steps: a, metal melting: smelting an Al-Si-Mg ternary alloy aluminum material into an alloy liquid; and b, casting: adopting low-pressure casting, controlling a casting temperature at 600-700 DEG C, mould-filling pressure to 0.02-0.03MPa, mould-filling time to 7-9 seconds, freezing and pressure-maintaining pressure to 0.05-0.06MPa, pressure-maintaining time to 8-10 minutes, and de-molding after releasing pressure and cooling. In this way, the aluminum alloy automobile hub casting process is simple and easy to control; the Al-Si-Mg ternary alloy aluminum material which is self-formulated is adopted for low-pressure casting and forming, so that the alloy liquidity is good, the linear shrinkage is small, and hot cracking tendency is avoided, and therefore, the cast automobile hub has relatively high strength, good plasticity and high impact toughness; and a casting piece is good in surface quality, and follow-up mechanical processing is not required.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to an aluminum alloy automobile wheel hub casting process. Background technique [0002] A car wheel is a cylindrical metal part in a car tire that is centered on the shaft to support the tire. The car wheel is an important part of auto parts. The wheels on the market can be divided into steel wheels and alloy wheels according to their materials. Steel wheels Large mass, large inertial resistance, poor heat dissipation, and very easy to rust, alloy wheels have better performance than steel wheels, alloy wheels are generally made by casting process, but due to the fluidity of metal liquid, temperature and pressure during casting Improper control and other problems, the surface quality of alloy profile castings is not good, and castings need subsequent machining. Contents of the invention [0003] The main technical problem to be solved by the present invention is to provide an alu...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D18/04
CPCC22C21/02B22D18/04
Inventor 付冲
Owner SUZHOU HUACHONG PRECISION MACHINERY
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