What are the processes of precision casting?
The perfect precision casting process can be divided into three types according to different shells: sodium silicate shell process; ethyl silicate shell process; silica sol shell process.
Make mold shells based on different products. According to precision casting, it includes many process types, metallic casting, porcelain mold casting, silica sol casting and investment casting, etc. Although all belong to precision casting, each casting process has With its own characteristics and its own market status, it can be said that all precision casting processes are all separate.
Many industrial production wax solid core solid models are processed by using aluminum alloy profile molds. Under all normal conditions, an industrially produced wax solid solid model can only match a rough commodity.
The essence of stainless steel precision casting is to quantitatively analyze the liquid metal poured into the mold cavity to release a large amount of working pressure of the mechanical equipment, make it shape, and condense the crystal to obtain a part blank. This type of process was also called"Liquid metal free forging", "liquid metal stamping", "liquid metal forging", "punching pin working pressure crystal", etc., the international aluminum die-casting masters are uniformly named "Squeezecasting"According to the translation, it is commonly called squeeze casting in China.
Precision casting is also called investment casting,Compared with other casting methods and parts forming methods, investment casting has the following characteristics:
High precision casting specifications,Fine roughness value,The precision of the specifications of the castings can be achieved4—6class,Roughness reached0.4—3.2μm,Can greatly reduce the remaining amount of casting processing,And can complete production without margin,Reduce product cost.
Can be cast with complicated shapes,And it is difficult to produce processed castings in other ways.The size of the casting contour is as small as a millimeter to over a thousandmm,Ultra-thin wall thickness0.5Mm,Minimum hole diameter1.0Mmthe following.
Alloy materials are not restricted:Raw materials such as carbon steel, stainless steel, alloy steel, alloy copper, aluminum alloy profiles and their heat-resistant alloys, aluminum alloys and precious metals can be produced by precision casting., For alloy materials that cannot be forged, welded or drilled,It can also be produced by precision casting..