Aluminum castings have low processing costs and good process performance during the manufacturing process, and are remelted during operation   By saving resources and energy, the application and development of this material will last for a long time, and aluminum castings will continue to thrive   Widely adopted to a certain extent is its advanced iron liquid desulfurization and filtration technology, as well as its thin-walled high-strength cast iron casting manufacturing technology.

The cast light alloy of aluminum castings has a series of excellent characteristics such as low density, high specific strength, and corrosion resistance. When used, it will   Widely used in various industries such as aviation, aerospace, automotive, and machinery. Especially in the automotive industry, in order to reduce fuel consumption   The use of aluminum and nickel alloy castings instead of steel and iron castings is a long-term development trend in terms of source utilization efficiency.

In order to further improve the material performance and maximize its potential, aluminum castings can be developed during operation   Aluminum alloy materials, especially aluminum based composite materials, can be used in   To a certain extent, it meets the performance requirements of different working conditions. 

During the casting process, aluminum castings are prone to internal porosity, shrinkage, porosity, and other defects. After machining, the surface dense layer of these defective castings is removed, exposing the internal structural defects. For automotive aluminum castings with sealing requirements, such as cylinder blocks, cylinder heads, intake manifolds, brake valve bodies, etc., during pressure sealing tests, the presence of defective micropores will lead to leakage of the sealing medium, resulting in a large amount of waste. These defects often only appear after machining and pressure testing, resulting in serious waves of working hours, raw materials, and energy. 

In order to effectively solve the above problems, aluminum castings are mainly produced by adopting   The handling measures are currently in use   The common technique is infiltration treatment, also known as plugging. The so-called "infiltration" refers to the process of   Under certain conditions, the infiltration agent is infiltrated into the micropores of the aluminum casting, and after solidification, the filler that penetrates into the pores is connected to the inner wall of the casting pores, blocking the micropores and enabling the parts to meet the conditions of pressure, anti-seepage, and leak prevention.