Die casting system for preparing aluminum alloy die castings and die casting process

Abstract

The invention belongs to the technical field of aluminum alloy part forming machining, and particularly relates to a die casting system for preparing aluminum alloy die castings. The die casting system comprises a straight pouring gate, a cross pouring gate, an inner pouring gate and a die cavity which sequentially communicate with one another, the die cavity is connected with an exhaust passage,the exhaust passage communicates with a vacuumizing device, an inner pouring gate connected with the die cavity is arranged on the end part of the inner pouring gate, the lower end surface of the inner pouring gate inclines upwards, a jet angle is formed between molten metal and the plane where the inner pouring gate is located in the direction of the inner pouring gate, and the jet angle is 30-60degrees. In addition, the invention further relates to a die casting process. Compared with the prior art, vortexes and air entrapment generated by mixing of the molten metal and air in the mold filling process can be effectively reduced, so that product mold filling is complete, surface bubbles and flow lines are few, the surface smoothness is high, and the product percent of pass is high.

Description

technical field [0001] The invention belongs to the technical field of forming and processing of aluminum alloy parts, and in particular relates to a die-casting system and a die-casting process for preparing aluminum alloy die-casting parts. Background technique [0002] With the development of information belts in the communication industry, especially the rapid popularization of 5G communication and the rapid growth of communication interfaces, there must be a problem of heating of communication components due to the acceleration of communication speed. Therefore, heat exchange must be performed through radiators. In order to reduce costs, most of them use aluminum alloy radiators, and die-casting is the lowest cost in the processing technology of aluminum alloy radiators. Therefore, aluminum alloy die-casting parts with high thermal conductivity become inevitable. [0003] The die-casting of aluminum alloy parts is to pour molten aluminum alloy into the pressure chamber ...

AI Technical Summary

Problems solved by technology

In the existing technology, the most common defects of aluminum alloy die castings are surface blistering and loose structure, which lead to a decrease in strength and electrical conductivity, and fail to meet quality standards, resulting in a high defect rate and seriously affecting the normal production of the product

What's more serious is that some defects are difficult to detect in the semi-finished products of die castings, but they will be revealed in the subsequent processing technology, such as electroplating, which will undoubtedly cause more serious losses to production

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