Innovating traditional casting process: permanent molds-metal steel molds low-pressure gravity casting technology

In modern manufacturing, low-pressure gravity casting using permanent molds (metal steel molds) is becoming the preferred process for precision casting production. Compared with traditional sand casting, this technology has outstanding performance in improving product quality and production efficiency due to its unique advantages.

What is Metal Steel Mold (Permanent Mold) Low-Pressure Gravity Casting?

Low-pressure gravity casting with a metal steel mold (permanent mold) is a casting method that utilizes a permanent metal mold, combining low-pressure filling with gravity-fed shrinkage. The process is injecting molten metal steadily into a metal steel mold (permanent mold) under low pressure, and complete solidification and molding under the action of gravity. This process not only reduces defects such as porosity and slag inclusions, but also significantly improves the density and mechanical properties of the casting.

Metal Steel Mold (Permanent Mold) Low-Pressure Gravity Casting VS Traditional Sand Casting

Compared to traditional sand casting, low-pressure gravity casting using permanent molds (metal steel molds) offers several significant advantages.

Firstly, using the permanent metal molds, the castings have high dimensional accuracy and good surface finish, avoiding the burrs and deformation problems common in sand casting.

Secondly, the low-pressure filling method makes the molten metal flow smoothly, reducing oxidation and air entrapment, this is particularly suitable for the forming of non-ferrous metals such as aluminum alloys and magnesium alloys.

In addition, permanent molds (metal steel molds) can be reused, which can reduce production costs and waste in the long run, in line with the trend of green manufacturing.

Application of low-pressure gravity casting with metal steel mold (permanent mold)

At present, metal steel mold (permanent mold) low-pressure gravity casting technology is widely used in automotive parts, aerospace precision parts, power equipment structural parts, and high-end instruments and meters. For example, key components such as automobile engine cylinder heads, wheels and aerospace brackets all use this technology to achieve high strength, light weight and high consistency requirements.

In the future, with the advancement of Industry 4.0, the low-pressure gravity casting process of permanent molds (metal steel molds) will further combine intelligent control and digital simulation, and continue to drive the casting industry towards high quality and high efficiency.