Strong Casting Process of Aluminum Alloy Wheel

Abstract

Aiming at the problems of weak feeding ability, low casting strength and low elongation in traditional low-pressure casting and gravity casting of aluminum alloy wheels, the present invention discloses a strong casting process for aluminum alloy wheels. , through the change of the casting process, the application effects of increasing density, increasing strength, increasing elongation, improving material utilization and productivity are achieved. The uniqueness of the invented strong casting method for aluminum alloy wheels lies in: melting conventional cast aluminum to casting Temperature range, the casting is completed by means of no-entrainment air diversion and speed-controlled mold filling, real-time strong feeding of the aluminum liquid sealed in the cavity during the solidification process through the feeding pressurization mechanism, based on sequential solidification and rapid cooling Based on the idea, the mold temperature control measuring point and cooling water channel distribution method using water as the medium are given, which creates the necessary conditions for obtaining castings with fine grain size and the smooth implementation of strong feeding.

Description

technical field [0001] The invention belongs to the technical field of light alloy forming, and the application field belongs to the manufacturing industry of aluminum alloy wheels Background technique [0002] At present, the forming process of aluminum alloy wheels at home and abroad is mainly based on casting process, and commonly used casting processes include low-pressure casting and gravity casting. The low-pressure casting process is that the aluminum liquid is located in the holding furnace under the mold. Through the action of low-pressure gas pressure, the aluminum liquid enters the mold cavity from bottom to top along the liquid riser to complete the mold filling, and is solidified and low-pressure replenishment under the action of low-pressure gas pressure. shrink to form the wheel. Gravity casting relies on gravity to fill the mold from top to bottom, and also depends on the gravity of the liquid at the gate or the gravity of the liquid in the specially set fee...

AI Technical Summary

Problems solved by technology

[0006] Patent application number: 201210328935.3 discloses "Gravity Pressure Casting of Aluminum Alloy Wheels". The casting position of this invention is the center side opening casting, which is different from the casting position of the present invention. The remaining side casting pipeline of this patent is lower than the inner wheel lip height The aluminum liquid cannot be discharged smoothly, which is not conducive to mass production; the invention is equipped with a diversion casting system, which can realize non-entrained air casting and speed-controlled mold filling, and this patent does not involve this aspect; the mold cooling of the patent adopts The medium is compressed air, and there is no specific cooling control principle. The cooling medium used in this patent is circulating water, and the water distribution method and the mold temperature control point layout method are given.

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