Precision castings refer to castings with complex shapes and high precision requirements, commonly used in fields such as aerospace, automotive, and mechanical equipment. In order to meet the high-precision and high-quality requirements of precision castings, the manufacturing process needs to strictly control each process link. Below, Dalian Precision Casting Manufacturer will provide a detailed explanation of the manufacturing process requirements for precision castings.

1. The selection of raw materials requires high requirements. Precision castings typically use high-quality metal materials, such as aluminum alloys, magnesium alloys, titanium alloys, etc. Choosing appropriate materials can ensure that precision castings have excellent mechanical and thermal properties, as well as good corrosion resistance and wear resistance. In addition, comprehensive testing and analysis of raw materials are required to ensure that they comply with relevant standards and specifications.

2. The mold design should be reasonable. The mold manufacturing of precision castings directly affects the quality and dimensional accuracy of the castings, so mold design should consider the shape, structure, and processing requirements of the castings. The mold should have sufficient strength and stiffness to avoid deformation and wear. In addition, the mold also needs to consider the shrinkage and slag holes of the casting, and take corresponding measures to prevent and repair them.

3. During the casting process, it is necessary to control the melting and casting process well. Melting requires accurate mastery and reasonable adjustment of material composition to ensure that the microstructure and properties of the alloy meet the requirements. During the casting process, attention should be paid to temperature control and melt stirring to avoid the occurrence of defects such as oxidation and inclusions. In addition, it is necessary to reasonably set the smelting cycle, pouring temperature, speed and other parameters to ensure the stability and controllability of the casting process.

4. Precision forming and precision machining are required. The shape and size requirements of precision castings are usually complex, requiring high-precision molding processes, such as gel mold casting, vacuum die-casting, low-pressure casting, etc. During the molding process, attention should be paid to the control of pouring temperature and pressure, as well as the insulation and sealing of the mold. After completion of molding, precision machining, including milling, boring, grinding and other processes, is required to meet the precision requirements of the parts.

5. Strict testing and quality control are required for the finished products. The quality requirements for precision castings are very high, so advanced testing equipment and methods such as coordinate measuring machines, metallographic microscopes, scanning electron microscopes, etc. are needed to comprehensively inspect the size, shape, and internal structure of the parts. At the same time, it is necessary to establish a sound quality control system, monitor and manage each process link, and ensure the stability and reliability of product quality.

The manufacturing process of precision castings requires high requirements, which require strict control from multiple aspects such as raw material selection, mold design, melting and casting, precision forming and precision machining, and quality control. Only by fully meeting these requirements can high-precision and high-quality precision castings be manufactured.