Powerful casting technology for aluminum alloy wheels

Abstract

The invention discloses a powerful casting technology for aluminum alloy wheels. The powerful casting technology aims at solving the problems that in traditional low-pressure casting and gravity casting of the aluminum alloy wheels, the feeding capacity is weak, the strength of castings is low, and the ductility is low. According to the powerful casting technology for the aluminum alloy wheels, under the condition that materials are not changed, as the casting technology is changed, the application effects of increasing density, strength, the ductility, the material use rate and the production rate are achieved. The powerful casting technology is characterized in that conventional cast aluminum is smelted to be within a casting temperature range, casting is completed in an air-entrapment-free flow guide and speed-control mold filling mode, real-time powerful feeding in the solidification process is carried out on molten aluminum sealed in a cavity through a feeding pressurizing mechanism, a mold temperature control measure point and cooling-channel distribution method is given based on the sequential-solidification and rapid-cooling thought, and necessary conditions are provided for obtaining the castings with the tiny grain size and smoothly implementing powerful feeding.

Description

technical field [0001] The invention belongs to the technical field of light alloy forming, and its 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 fe...

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. This patent can use water and wind as the cooling medium, and gives the distribution method of cooling channels and the layout method of mold temperature control points.

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