Gravity Casting Process Parameters and Surface Accuracy
Understanding Gravity Casting
There are many methods for making metal materials into desired products, such as casting, molding, kneading, rolling, drawing, stamping, cutting, powder metallurgy, and so on. Among them, casting is a more basic, commonly used, and widely used process. Casting can also be divided into sand casting and metal casting according to the material of the casting mold. Precision casting factories are proficient in both casting processes and design and manufacture molds for these two types of casting.
Casting can also be divided into gravity casting and pressure casting according to the pouring process of the metal liquid. Gravity casting refers to the process of pouring metal liquid into a casting mold under the effect of the earth's gravity, also known as casting. The broad gravity casting includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc.; narrow gravity casting specifically refers to metal casting.
Understanding the Process Parameters and Surface Accuracy of Gravity Casting
The filling speed of gravity casting can be effectively controlled during the production process, and precise control can be achieved through a computer. This way, the formability of the product will be better and the surface finish of the casting will be good.
Gravity casting can effectively reduce the thermal and chemical effects of metal liquid on the mold, reduce the surface roughness of the casting, and the structure of the casting obtained by gravity casting is relatively dense. The mechanical properties in use are relatively high mainly because it can reduce looseness and micro air holes.
Gravity casting can improve the utilization rate of metal in use, and the casting can also be heat treated mainly because there are relatively few internal air holes in the casting. The product mainly includes the selection of the pouring position, the design of the pouring system, and the reasonable use of the riser and cold iron.
Gravity casting needs to adopt its optimal process parameters during processing so that its specific requirements can be determined and then explained specifically. The product mold refers to the structure and appearance of the part that is pre-made with other easily formed materials to obtain the structural appearance of the part.
During processing, gravity casting needs to use its ideal process parameters. This way, the specific requirements can be determined, and then explained specifically. As the surface accuracy of the processed surface improves, a relatively fine surface roughness will inevitably be obtained. However, as the surface roughness value decreases, the processing cost of the product will continue to increase. Therefore, the operator needs to ensure the performance requirements of the part when deciding on accuracy.