Die casting is a metal casting process that uses a mold cavity to apply high pressure to the molten metal. The molds in metal processing plants are usually made of higher-strength alloys. This process is somewhat similar to injection molding. Sand mold casting is to use sand to make molds. Sand mold casting needs to put a finished part model or wooden model (pattern) in the sand, and then fill it with sand on the weekend of the pattern. After the pattern is taken out of the box, the sand forms a mold.
In order to take out the model before casting the metal, the casting mold should be made into two or more parts; during the manufacturing process of the casting mold, holes and vent holes for casting the metal into the casting mold must be left to synthesize the casting system. After pouring the metal liquid into the mold, keep it for an appropriate time until the metal solidifies. After taking out the parts, the mold is destroyed, so a new mold must be made for each casting.
Investment casting, also known as milling machine processing, includes processes such as pressing wax, repairing wax, assembling trees, dipping slurry, melting wax, casting molten metal, and post-processing. Milling machine processing lost wax casting is to use wax to make a wax mold of the part to be cast, and then coat the wax mold with mud, which is a mud mold. After the clay molds are dried, they are baked into pottery molds. Once baked, the wax molds are all melted and lost, leaving only the pottery molds. Generally, a pouring port is left when making a mud mold, and then molten metal is poured from the pouring port. After cooling, the required parts are made.