How to operate precision casting processing technology

Let us take sand casting as an example. Many factories producing sand should create conditions to choose technologically advanced modeling and core-making methods. The production line of the old vibrating or vibrating model machine is insufficient, the labor force of the workers is large, and the noise is large, and it should be gradually reformed under the requirement of mass production. For small castings, you can choose horizontal parting or vertical parting boxless high pressure forming machine production line, the production capacity of solid modeling is high, and the floor space is small. The middle part can choose various production lines of box-type high pressure forming machine and air impact forming production line. According to the requirements of the rapid and high-precision molding production line, you can choose the core-making method: high-efficiency core-making methods such as cold core box, hot core box, shell core, and medium-batch large castings can consider using resin self-hardening sand to form cores.
Heavy castings produced in small batches are still an important method of manual modeling. The manual model can be used to a variety of complex requirements and is more flexible, and does not require many technical configurations. Sodium silicate sand, VRH sand, organic ester sodium silicate sand, clay dry sand, resin sand, cement sand, etc.; for single-piece heavy castings, the pit-mouth forming method has low cost and fast production. The long-split long-split molding method is suitable for mass production or production. Although the initial investment of the mold and the sand box is relatively high, it can be compensated from both the molding working time and the product quality.
Low pressure casting, die casting, centrifugal casting and other casting methods are only suitable for production due to the expensive equipment and molds.
Conditions and methods should be appropriate
For example, they are also a way to produce large machine bodies and other castings. Generally speaking, they are made of moving components, not produced the same shape and sand box, but composed of other factories. Different enterprises have different production conditions (including equipment, places, staff quality, etc.). ), production habits and accumulated experience. According to these conditions, we should consider which products are suitable and which products are not suitable (or not).
Precision requirements and costs
differentPrecision castingThe casting precision obtained by the method is different, and the initial investment and output are also inconsistent. After all, the economic benefits are also different. Therefore, in order to be more, faster, better, and less expensive, we should take all aspects into consideration. A preliminary cost estimate should be made for the selected casting method to determine a casting method that has high economic benefits and can guarantee the casting requirements.
Although the development of China's foundry industry is in a difficult period, in the long run, China's precision casting industry still has certain expectations. Market demand is gradually heating up. In addition, China's foundry industry is strong. It is believed that China's foundry industry will achieve gratifying results.
Experts said that to fundamentally advance the level of casting technology, we must first develop simulation technology, advance the accuracy of expectations, strengthen process control, and increase the yield. Rule issues can be well grasped, which will not affect the yield of mass production. Second, the integration of production, education and research. In addition to enhancing innovation awareness and progress in development, independent innovation of enterprises also needs to strengthen the "production, learning, and research" of precision creation enterprises. Third, focus on material research and development. Materials are the foundation of industry, and there was still a lot of work to be done at that time. In the aerospace alloy material industry, especially in the high-temperature alloy industry, the scientific research of some new materials and the technology of the smelter still have to be improved, and it is not enough. Fourth, pay attention to the advancement of equipment technology. The first is the technical problem of mechanical equipment. For many key mechanical equipment, if the first large-scale equipment is to be determined by the mouth, the scientific research, development and design of precision casting equipment is very critical.