Precautions for Precision Machining and Industry Requirements

Fine mechanical machining is a casting process that involves minimal or no cutting. It’s an excellent technological approach in the casting industry and enjoys widespread application. The reasons for choosing fine mechanical machining are as follows:
It can utilize common materials and make extensive use of scrap metals and recyclable resources. Compared to conventional forging methods, it consumes significantly less material. The cost is reasonable, and its overall economic performance is good. Energy consumption is moderate, and material usage is low. Casting offers a wide range of applicability, with no limitations on casting part size, thickness, or geometric complexity, and its production process is highly flexible. Investment casting provides high dimensional accuracy and excellent surface finish, reducing the need for subsequent machining operations. It is particularly well-suited for casting high-temperature alloys—such as turbine blades, streamlined profiles, and cooling chambers for jet engines—parts that would be extremely difficult to produce using conventional machining techniques. Castings produced via this method exhibit precise dimensions, require minimal machining allowances, thereby saving both machining time and metal material.
The requirements for precision machining industries are as follows:
1. Establish a number of well-structured, integrated industry-academia-research and education-training bases that can continuously supply enterprises with qualified personnel and consistently develop new types of casting materials, thereby meeting the ever-growing demand for casting materials while gradually intensifying efforts in technology import and export.
2. To complete the adjustment of the industrial structure, we must phase out a number of small casting plants that have low technological levels, poor product quality, severe pollution, and poor economic performance, thereby forming relatively concentrated “small giants” and “enterprises” and achieving “specialization and scale-up” in production.
3. Complete the transition from a growth model that is labor- and resource-intensive to one that is technology- and capital-intensive; shift from a crude, polluting model to a green, intensive one. Product quality, variety, and quantity will reach world-class standards. The proportion of high-value materials will increase, and the production rate and economic benefits of the entire casting plant will grow exponentially. Meanwhile, environmental pollution control efforts will have laid the foundation for establishing a Chinese casting materials industry system that is harmoniously aligned with the environment.