Casting and its casting method and application, casting method of automobile wheel and automobile wheel

Abstract

The invention belongs to the technical field of casting, and relates to a casting, a pouring method and application thereof, a casting method of an automobile wheel and the automobile wheel. The pouring method of the casting of the present invention comprises: the pouring temperature is 645-660°C, the liquid rising pressure is 0.018-0.022MPa, the liquid rising time is 4-8s, the filling pressure is 0.023-0.027MPa, and the filling time is 10- 20s, the pressurization pressure is 0.08-0.12MPa, and the pressurization time is 3-8s; after the pressurization is completed, the pressure is maintained at 0.08-0.12MPa for 70-130s, and the mold is opened after the pressure is released and cooled. The invention can not only improve the mechanical performance of the casting, reduce the defects of many pinholes in the casting, but also greatly improve the production efficiency and shorten the casting cycle.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a casting, a pouring method and application thereof, a casting method of an automobile wheel and the automobile wheel. Background technique [0002] As an important part of the car, the quality of the car wheel not only affects the appearance of the car, but more importantly, the safety of the car. Aluminum alloy wheels have been widely used in the field of automobile wheel manufacturing due to their light weight, high strength, high precision, good braking balance, and good thermal conductivity. [0003] At present, aluminum alloy wheels are mainly produced by low pressure casting. However, the pouring temperature of the traditional low-pressure casting process currently used is relatively high, generally around 690±10°C, and the liquid rise, mold filling, and pressurization are relatively slow, resulting in low production efficiency, long casting production cycle, ...

AI Technical Summary

Problems solved by technology

However, the pouring temperature of the traditional low-pressure casting process currently used is relatively high, generally around 690±10°C, and the liquid rise, mold filling, and pressurization are relatively slow, resulting in low production efficiency, long casting production cycle, and products. low performance

In addition, in order to reduce the energy consumption of the car and show the three-dimensional shape of the wheel, many wheels are now designed with a grooved structure, so that in the traditional casting, it is easy to have shrinkage holes exposed after the grooved part is processed. The performance is low and the pass rate is low

[0004] In general, the defects of the current low-pressure casting process are mainly reflected in: the mechanical properties of the casting are not high, there are many pinholes, the metallographic particles are large, the casting cycle is long, and porosity and shrinkage are prone to occur.

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