Sand casting is a common metal casting method with the following advantages and disadvantages: advantage: 1. Simple equipment: Compared with other casting methods, sand casting has relatively low equipment requirements and low cost. 2. Wide range of materials: Sand casting can be used for many different types of metals, including iron, aluminum, copper, etc. 3. Manufacturing flexibility: Sand casting can manufacture parts of various shapes and sizes, including simple and complex geometries. 4. Cost-Effectiveness: Sand casting is a cost-effective method for low to medium quantity part production. 5. Scalability: Sand casting can easily adapt to changes in output, increasing or decreasing production quantities according to demand. shortcoming: 1. Limited surface quality: Since some marks and blisters will be left on the surface of the sand mold, the surface quality of sand cast parts is usually rough and requires further processing and treatment. 2. Low dimensional accuracy: Due to the expansion and contraction of the sand mold, the dimensional accuracy of sand casting is usually low, making it difficult to obtain very accurate dimensions. 3. Long production cycle: Compared with some other casting methods, the cycle of making a sand mold and casting is usually longer, and it takes a certain amount of time to prepare and process the sand mold. 4. Limit complexity: Although sand casting can manufacture parts of various shapes, its applicability is limited for parts with very complex geometries or complex internal structures. 5. Environmental impact: A large amount of sand dust and waste sand are generated during the sand casting process, and smoke and waste gas will be generated during metal melting and processing. Appropriate environmental protection measures are required. In summary, sand casting has certain advantages when producing metal parts with simple shapes and medium quantities, but it may not be suitable when high precision, complex shapes or mass production are required.

Casting machine tools refer to machine tools used to manufacture castings, and their bodies are usually made through casting processes. The following are the general steps of the casting process of general casting machine tool bodies: 1. Design the mold: First, according to the design requirements of the casting machine tool, the detailed design and size specifications of the body are formulated. Then, the mold of the body is made according to the design requirements, and high-strength casting sand is usually used to make the mold. 2. Prepare the mold: Place the prepared mold on the casting machine and ensure that the position of the mold in the machine is accurate. At the same time, prepare the required casting materials, usually metal alloys. 3. Preheat the mold: Before the actual casting operation, the mold usually needs to be preheated. The purpose of preheating is to improve the heat resistance and ductility of the mold so that it can better accommodate the molten metal. 4. Prepare the molten metal: Put the appropriate metal material into the furnace, heat it and melt it. The heating temperature depends on the metal material used. 5. Pouring: When the metal melts and reaches the appropriate temperature, pour the molten metal from the furnace into the pre-prepared mold. During the pouring process, care should be taken to avoid bubbles and impurities. 6. Cooling and solidification: After pouring, the metal is allowed to cool and solidify in the mold. The cooling time depends on the metal used and the size of the casting. 7. Demolding: Once the casting is completely cooled, the mold can be removed from the casting. Special tools and equipment are usually used for demolding. 8. Cleaning and finishing: After removing the mold, the casting is cleaned and finished. It may be necessary to remove oxides, burrs or other defects on the surface of the casting. 9. Post-processing: The casting is further processed and treated as needed, such as heat treatment, surface treatment, etc. These are the general casting process steps for the casting machine tool body. The specific details and processes may vary depending on the specific body design and casting process requirements.