High-pressure casting process for improving air tightness of cast aluminum alloy

Abstract

The invention relates to the technical field of reservoir slope protection construction, in particular to a high-pressure casting process for improving the air tightness of a cast aluminum alloy, which comprises the following steps: S1, molding, S2, closing the mold, S3, smelting the aluminum alloy, adding an aluminum block into a high-temperature smelting furnace, and then sequentially adding silicon, copper, magnesium, zinc, iron, manganese and titanium to form an aluminum alloy mixed solution, S4, carrying out punch injection, S5, solidifying and forming an alloy molten solution, and S6, tempering. And S7, mold opening and part taking are conducted, specifically, when the tempered mold is cooled to the room temperature, the movable mold is detached, and then the aluminum alloy die casting is taken out. According to the high-pressure casting technology for improving the air tightness of the cast aluminum alloy, the problem that an aluminum alloy solution can generate bubbles in the die casting process is effectively solved, shrinkage porosity, air holes and other defect phenomena in an aluminum alloy die casting are avoided, and therefore the air tightness of the aluminum alloy die casting is further improved; the aluminum alloy die castings can meet the conditions of pressurization, seepage prevention, leakage prevention and the like, the problem that the rejection rate of the aluminum alloy die castings is high is effectively solved, and the mechanical performance of the die castings is improved.

Description

technical field [0001] The invention belongs to the technical field of high-pressure casting of aluminum alloys, and particularly relates to a high-pressure casting process for improving the air tightness of cast aluminum alloys. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries. With the rapid development of the industrial economy, the demand for aluminum alloy welded structural parts is increasing, and the research on the weldability of aluminum alloys has also deepened. At present, aluminum alloys are the most widely used alloys; [0003] However, the existing aluminum alloy die castings are prone to inhalation during the smelting process to increase the gas content, and shrinkage porosity, pores and other defects are formed in the aluminum alloy die castings, resulting in poor ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing aluminum alloy die castings are prone to inhalation during the smelting process to increase the gas content, resulting in shrinkage porosity, pores and other defects in the aluminum alloy die castings, resulting in poor air tightness of the aluminum alloy die castings, making the die casting products in use Occurrence of air leakage, resulting in a high scrap rate of aluminum alloy die castings, affecting the mechanical properties of die castings