Generally speaking,The surface quality of the castings produced by negative pressure compaction casting can fully meet the requirements of industrial production. Especially when pouring cast steel parts and ductile iron parts,It consistently reflects that its surface quality is much better than that of sand castings.

　　However, to further improve the surface finish of the casting, it is limited by the process method itself. For instance, the foam plastic of the negative pressure vaporization mold itself is prone to shedding beads during processing, and when the beads are poorly bonded, there are pits and gaps. The effects of high-temperature casting and vacuum suction force, etc., make the surface of castings prone to defects such as sand sticking, needle pricking, small pits, and grain network patterns. Therefore, castings with high requirements for surface finish,There are certain difficulties in production by this technological method. This is the problem to be solved that hinders the promotion and application of negative pressure solid throat casting.

　　To further improve the surface quality of castings, the material issue of foam plastics is also involved. In addition,It is also very necessary to develop a surface finishing agent for models with good coating performance and low gas evolution.
Foshan Weilihuang Trading Co., Ltd. is a leading manufacturer specializing in the production and sales of international and domestic stainless steel hardware accessories and its own brands. The company is located at Tianjinli Hardware Accessories Center, Lanshi 2nd Road, Chancheng District, Foshan City, Guangdong Province8seat10-12The number (i.e., the main entrance of the market) has an abundant supply of goods, a complete range of varieties, wide coverage, favorable prices, and stable and superior quality!

　　The company uses high-quality stainless steel and exquisite craftsmanship to ensure there are no weld marks at the interfaces. Its products feature novel designs, elegant craftsmanship, and long-lasting durability. The company has always adhered to the principle of quality first and reputation first. It is equipped with mature production facilities and has strong technical strength, thus ensuring the quality of its products. The company is willing to make unremitting efforts to join hands with our customers to create a win-win situation and provide high-quality products for our partners.