Where is the pouring location of precision castings?
The direction of precision castings in casting is a very important parameter, which is closely related to the quality of the castings, scale accuracy, difficulty of the molding process, etc. Therefore, you cannot be careless when choosing the casting direction. When important processing of precision castings When facing down or on the side, the gas in the metal liquid will float during laser cutting processing and pouring.
The upper part of the casting may have defects such as pores, slag inclusions, sand holes, etc., so this setting method should be avoided. In order to ensure the quality of the important working surface, the pouring direction of the machine tool should be such that the guide rail faces downward. In terms of the circumferential surface quality requirements of the casting In higher cases, choose the vertical pouring solution so that the circumferential surface is on the side to ensure uniform quality and universal use.
When the large surface of a precision casting is poured downward or tilted, due to the strong thermal radiation of the hot metal liquid to the upper part of the casting, the top sand mold expands and even cracks, causing sand, blisters and other defects to appear on the large surface. In order to prevent similar problems from occurring, A large surface facing downwards or choosing a sloped pouring method is ideal.