In the production of pump valve castings, defects such as shrinkage and pores are often encountered. The amount of repair welding and grinding is quite large, and the surface is not very beautiful. At the same time, some holes are found in the boreholes, and there are leaks in the test Phenomenon an... read more
Because the casting in the metal mold cools and condenses faster than in the sand mold, the metal mold has no tolerance. Therefore, when the metal mold is cast, the casting stress that occurs in the casting is larger than that of the sand mold. In the process, the phenomenon of lack of pouring and c... read more
At present, the developed countries in the European and American automobile industry have advanced technology for automobile casting production, good product quality, high production efficiency, and low environmental pollution. Series and standardization of casting raw and auxiliary materials have b... read more
Sand casting is a type of casting process. Generally, the casting mold used in the product is effectively combined directly by the core and the outer sand mold. The material used in the sand casting process is It is very cheap and relatively simple to manufacture. Sand casting is very suitable for t... read more
In the process of making castings, it is effective to pour its solid state liquid at room temperature, but soon to pour the solidified material into its specific shape of the mold and wait for its solidification and forming. Metal material heated to liquid state. The material used in the process of ... read more