Aluminum alloy casting method for solving shrinkage cavity problem generated in die castings

Abstract

The invention discloses an aluminum alloy casting method for solving a shrinkage cavity problem generated in die castings. The method comprises the following steps of (A) reducing the casting temperature; (B) improving a cast structure; (C) increasing the specific pressure; (D) equipping overflow grooves on alloys; (E) increasing the filling degree of a pressure chamber; (F) and improving a casting system. The method provided in the invention has the advantages of reducing shrinkage cavity defects in die castings and ensuring the internal qualities of die castings.

Description

Technical field: [0001] The invention relates to an aluminum alloy casting method for solving shrinkage cavities in die castings. Background technique: [0002] In the die-casting production process, generally due to the high alloy pouring temperature, the mold temperature gradient layout is unreasonable; the casting wall thickness is uneven, resulting in heat saving; the amount of molten metal poured is small, the coating is too thin, the feeding effect is not enough or in-casting Problems such as the small mouth area make the die-casting parts have irregular shapes and rough surfaces during the condensation process. These holes directly affect the internal quality of the die-casting parts. Invention content: [0003] The object of the present invention is to overcome the above disadvantages and provide an aluminum alloy casting method for reducing shrinkage cavity defects in die castings and ensuring the internal quality of die castings to solve shrinkage cavities in die...

AI Technical Summary

Problems solved by technology

[0002] In the die-casting production process, generally due to the high casting temperature of the alloy, the mold temperature gradient layout is unreasonable; the wall thickness of the casting is not uniform, resulting in heat saving; the amount of molten metal poured is small, the coating is too thin, the feeding effect is not enough or in-casting Problems such as the small mouth area make the die-casting parts have irregular shapes and rough surfaces during the condensation process. These holes directly affect the internal quality of the die-casting parts.