​What is the difference between precision castings and general castings?

In casting production, we often hear about precision casting. So what is the difference between precision castings and general castings? Here, the editor briefly shares with you some specific differences.

Precision castings are castings formed by pouring molten metal into a certain mold and undergoing cold treatment. There are many casting processes for precision castings, including metal mold casting, pressure casting, investment casting, lost foam casting, V-method casting, etc. The finished castings made by the precision casting process are relatively precise and do not need to be reprocessed later, or only a very small amount of processing is required. At the same time, precision casting can complete the casting of castings with complex shapes and thin thickness. Not only small castings can be cast, but large castings can also be easily cast. Judging from the current situation, the world's precision casting forming technology is developing rapidly and has a wide range of applications. In the future, the development trend of precision casting technology is that casting products will become closer and closer to component products.

General castings are rougher than precision castings and fall within the scope of forging. Generally, casting is to quickly fill the solid casting model with molten metal at a high rate under high pressure, and solidify it under the pressure. Later, it still needs to be processed by post-finishing before it can be put into use. However, due to the multi-faceted external forces acting on multiple materials, castings often deform during the solidification process. General casting is usually suitable for castings that do not require high geometric tolerances and performance requirements for equipment machinery.

In fact, precision casting and general casting are two different casting methods. The main differences are reflected in dimensional accuracy, surface finish and sales price. However, precision casting has higher standards and the performance of castings is better. Therefore, when consumers purchase castings, they can choose according to their own abilities and needs.