Wide rim deep LIP automobile aluminium alloy wheel casting mould filling exhaust method

Abstract

The invention provides a wide rim deep LIP automobile aluminium alloy wheel casting mould filling exhaust method. A region where an air hole is easily formed is found by casting process simulation before a mould is developed, the region is generally at the middle position of a wheel window, namely side form position corresponding to the mould, 5-12 vent plugs are arranged at the side form position, one end of the vent plug is connected with a compressed air control valve, and the compressed air control valve is connected with a low pressure casting system control cabinet. Pressure parameter of compressed air is 250-300Kpa, the compressed air control valve is opened when aluminium liquid is used for mould filling, and gas in the cavity of the mould is expelled by virtue of the vent plug according to Berkley principle, so that the cavity of the mould is in negative pressure; exhaust time of vent plug is 8-15 seconds, and the system control cabinet automatically controls the compressed air control valve to be closed when mould filling at LIP is completed. The method has obvious exhaust effect, simple manufacturing, use convenience and low cost and is perfect for exhaust in the casting mould filling process.

Description

technical field [0001] The invention relates to the field of automotive aluminum alloy wheel hub casting, in particular to a method for exhausting gas during mold filling process of wide rim deep LIP automotive aluminum alloy wheel hub casting. Background technique [0002] In recent years, with the rapid development of the automobile industry, automobile tires tend to be tubeless, large-diameter, and flat. The adhesion and friction of the ground make the car's handling performance better, thereby improving the safety and comfort of the car; on the other hand, the large-diameter, flattened tires cooperate with the corresponding wheel hubs, making it more modern, domineering and fashionable; Due to the continuous development of tires towards tubeless, large diameter, and flattening, this also makes the matching aluminum alloy wheels more and more towards the development trend of large diameter and wide rims. As a result, the LIP depth of aluminum wheels purchased in the inte...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the problem of protruding air holes involved in casting and filling process of large diameter, wide rim and deep LIP aluminum alloy wheel hub, to provide a wide rim with low cost, convenient use and remarkable effect Exhaust method during filling process of deep LIP automotive aluminum alloy wheel hub casting

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