1. Preparation of molding sand and core sand The preparation process of molding sand directly affects the quality of molding sand. The preparation of molding sand is generally divided into the preparation and inspection of raw materials, and the preparation and quality control of molding sand.
2. Modeling The method and process of making sand molds with process equipment such as molding sand and patterns is called modeling. There are many types of molding methods, which depend on the shape, size, and technical requirements of the casting.
3. Smelting The process and operation in which the metal is transformed from a solid state to a liquid by heating, and the impurities in the molten metal are removed through metallurgical reactions, so that the temperature and composition meet the specified requirements. There are many types of equipment for smelting metal. We produce cast iron platforms, and cupolas are generally used for machine tool castings.
4. Sand drying Dry casting is generally used for some larger castings or castings with high quality requirements. For example, large cast iron platforms, machine tool bed castings, machine tool workbenches, machine tool castings, etc.
5. Pouring The operation of pouring molten metal from a ladle into a mold is called pouring.
6. Cleaning The process of removing the surface sticky sand, molding sand and excess metal from the casting after falling sand is called cleaning
7. Heat treatment of castings Heating castings to a certain temperature range, holding for a period of time, and then cooling to an appropriate temperature at a specified speed to obtain the expected structure and properties.
