In order to obtain the structural shape of the parts in the manufacturing process of gravity casting, it is necessary to use the easily formed materials to make the structural shape of the parts in advance. Then the mold is put into the sand mold, which directly forms a cavity with the same part structure and size. The flowing liquid is poured into the gravity casting cavity. After the liquid is cooled and solidified, it can effectively form parts that are completely different from the shape and structure of the mold. In this way, it can be directly used on the molding machine or any mold machine.
In general, gravity casting will get finer surface roughness with the improvement of its machining surface accuracy in the machining process. However, with the reduction of its surface roughness, the machining cost will directly increase.
While determining its accuracy, the operator also needs to effectively ensure the manufacturing quality and accuracy requirements of its gravity casting. During the processing of mold parts, it needs to effectively meet the technical operation on the part drawing, and the mutual position accuracy between the machined surfaces of the parts.
In gravity casting, the metal will overcome some resistance such as gravity under the action of pressure to fill the mold, so as to obtain a casting method for its castings. Generally, such casting methods can be divided into pressure regulating casting, differential pressure casting and low pressure casting.
The filling speed of gravity casting can be effectively controlled. In the process of use, it can be effectively controlled through the computer. The product has good formability and the surface finish of the casting is good, which can effectively reduce the thermal and chemical effects of the metal on the mold and effectively reduce the surface roughness of the casting.
