A pouring system for metal ultra-thin shell

Abstract

The invention provides a gating system of an ultra-thin metal shell and relates to the technical field of forming of ultra-thin castings. The gating system comprises a straight gating channel, a transverse gating channel, inner gating channels and inner gating openings which are all connected in sequence, wherein the transverse gating channel extends to form the first inner gating channel and the second inner gating channel, the first inner gating opening and the second inner gating opening are formed in a cavity for forming the ultra-thin metal shell, the first inner gating channel is connected to the cavity through the first inner gating opening, the second inner gating channel is connected to the cavity through the second inner gating opening, two flows of molten metal enter the first inner gating channel and the second inner gating channel respectively, the first flow of molten metal sequentially flows through the first inner gating channel, the first inner gating opening and the thin wall area of the cavity, the second flow of molten metal sequentially flows through the second inner gating channel and the second inner gating opening, and the first flow of molten metal and the second flow of molten metal reach the converging area of the cavity at the same time. According to the gating system, the mold-filling capacity and the mold-filling stability of the molten metal can be improved, the defects of cold shut, gas involving, bubbling and the like can be effectively avoided, the yield of the product is improved, and meanwhile, the gating system is reasonable and simple in structure, easy to operate and low in machining cost.

Description

technical field [0001] The invention relates to the technical field of forming ultra-thin metal castings, in particular to a gating system for ultra-thin metal shells. Background technique [0002] For the forming of general metal thin-walled shells, for example, the thickness is more than 1mm. If the structure of the shell is relatively simple, it is often formed by stamping process. In order to ensure the overall structural strength of the shell, die-casting is generally used. Compared with other casting processes, die-casting has the characteristics of accurate size of molded products, smooth surface, high structural strength and hardness, and high production efficiency. It is the most used in casting process. broad kind. In the prior art, the gating system of die castings is mainly designed for thin-walled shells with a thickness of more than 1mm, but for ultra-thin metal shells with a thickness much less than 1mm, such as the shell of an ultra-thin connector, due to it...

AI Technical Summary

Problems solved by technology

In the prior art, the gating system of die castings is mainly designed for thin-walled shells with a thickness of more than 1mm, but for ultra-thin metal shells with a thickness much less than 1mm, such as the shell of an ultra-thin connector, due to its pouring The cross-sectional area of ​​the runner in the system will be reduced a lot, which greatly restricts the flow performance of the metal melt in the runner. If the structure of the existing gating system with a molding thickness of more than 1mm is reduced proportionally, it will not make the The metal melt achieves high fluidity and improves the forming ability, but it cannot achieve smooth and orderly filling, and it is easy to cause defects such as insufficient pouring, cold shut, air entrainment, cold lines, and pores in the formed casting, which seriously affects the metal superstructure. The quality of thin castings reduces the yield of castings

Images