Low pressure sand casting Service

We have many years of processing experience in Low pressure sand casting manufacturing,
In addition, we also involve vacuum welding, and standard surface services, belonging to a one-stop Low pressure sand casting service center

What is Low pressure sand casting

Low pressure sand casting is generally understood as a combination of those properties that are outstanding during filling of the mould, crystallization and cooling. Flow, shrinkage, air tightness, casting stress, suction performance. These properties of magnesium, aluminum, and stainless steel depend on the composition of the alloy, but are also related to factors such as casting, alloy heating temperature, mold complexity, gate riser system, gate shape and other factors.

Advantages of low pressure casting

Make complex parts, especially rough embryos with complex inner cavity; wide adaptability, common metal composite materials in industrial production can be forged, up to hundreds of tons; raw materials are from general, high quality and low price, such as scrap steel, old parts . Slag, etc.; the appearance specifications of castings are very close to the parts, which reduces the amount of drilling and belongs to non-drilling production and processing; generally speaking, 40% to 70% of the net weight of agricultural machinery is castings.

Manufacturing of military chassis

Low pressure casting process

Charging and charging pressure, we often say that the liquid working pressure refers to the absorption of the required working pressure when the metal material liquid level rises to the glue port. At this time, it is stipulated that the metal material liquid cannot rise rapidly in the liquid pipe, which is conducive to the steam in the mold. Drain to prevent metal material liquid from splashing in the glue port. The metal material liquid is raised to the specified working pressure at the top of the casting, and the pressure change rate on the metal material liquid level, that is, the charging rate.

The transformation and transformation rate should be controlled in an orderly manner within a reasonable range. The pressure test time must be operated well, too short or too long is not conducive to storage. Reasonable operation of casting temperature and pouring temperature is also important. When we cast low-pressure aluminum alloys, the operating temperature of the metal material is basically 200~2500C, and the pouring temperature of the thick-walled complex parts is controlled at 300~3500C.

Manufacturing of military chassis

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