What are the porosity conditions of gravity casting machines?

    Gravity casting machines can complete the production process of many casting products, such as metal casting operations and investment casting processes. These can be realized by gravity casting machines, so now gravity casting machines have a wide range of applications. Although the operation of gravity casting machines has tended to be automated, technicians are still required to operate the gravity casting machines during the production process. Gravity Casting Machine productivity can also be improved because technicians have a better understanding of how the equipment operates. But for gravity casting machines, the operation of the control box can be easily used even by non-technical personnel.

　　Although the castings produced by the gravity Casting Machine are used in many industries and the castings produced have good performance, voids occasionally occur in the production of complex castings. Generally, there are three types of pores in castings: mesh pinholes, point pinholes and comprehensive pores. Let the editor introduce to you the pore situation.

 

　　Mesh pinholes are caused by tight connections between pinholes, resulting in large holes in the casting. Point pinholes are pointer holes with clear outlines and discontinuous circular points. The pore condition where both types of pores exist is comprehensive pores with more pinholes, but the shape of the pinholes is polygonal rather than circular points.

 

　　When castings are produced, pores and blowholes are inevitable. Even when careful attention is paid to gravity casting machines, the flow of molten metal can still cause a small number of pores during the casting process. During casting, manufacturers should pay attention to the temperatures of the mold and molten metal, the composition of the molten metal, and the casting speed, etc., so as to minimize the number of pores.

 

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