Method integration

For example, sand casting, many production processing plants should give full play to their strengths and adopt excellent technical modeling and core-making methods. The old-style shock-type or shock-type molding machine production line is not high in productivity, the staff is very efficient and noisy, and is not suitable for many production regulations, so it should be gradually updated in many aspects. For small castings, the boxless high pressure molding machine production line that can adopt horizontal analysis or vertical analysis, the real molding production is efficient and high, and it takes up a small area; for medium parts, various box high pressure molding machines can be used Production line and air-punch molding line, in order to incorporate the requirements of rapid and high-precision molding production line, core-making methods can be used: cold core box, hot core box, shell core and other high-efficiency core-making methods.

Medium-level and large-volume large and medium-sized castings can consider the use of epoxy resin self-setting sand for molding and core making.

For heavy castings produced in small batches, hand-made modeling is still the key method. Hand-made modeling can incorporate a variety of complicated regulations, which is more convenient, and does not require many processing technology and equipment. Able to use water glass sand mold,VRHMethod sodium silicate sand mold, organic chemical ester sodium silicate self-setting sand mold, clay dry type, epoxy resin self-setting sand mold and concrete sand mold, etc.; for heavy castings produced from loose parts, the pit molding method is used for low cost and quick construction and commissioning. Mass production or long-term production of shaped products are more suitable for multi-box modeling and split-box modeling. Although the initial project investment of molds and sand boxes is high, it can be compensated by saving comprehensive modeling man-hours and improving product quality.

Casting methods such as bottom pressure casting, die casting, and suction casting are only suitable for mass production due to the relatively expensive equipment and molds.

Standard methods should be appropriate

For example, it is the same to produce large and medium-sized CNC lathe bed bodies and other castings. Generally, the core assembly method is used, and the shape and sand box are not made. Look like. Different company production standards (including equipment, locations, employee code of conduct, etc.), production habits, and accumulated work experience are different. Based on this standard, we should consider which products are suitable for and what is not suitable (or not). commodity.

Accuracy regulations and cost

Obtained by various casting methods The precision of the castings is different, the initial project investment and productivity are inconsistent, and the final economic benefits are also different. Therefore, to ensure more, fast, better, and economical, it should be applied to all fields. Solve the used casting method to carry out basic cost estimation, in order to clarify the casting method that has high economic benefits and can ensure the casting regulations.

Although my country’s casting industry development plan is at a relatively difficult stage, from a long-term perspective, my country’s high-precision casting industry development plan still has certain expectations. The market demand has gradually begun to warm up, and Coupled with the strong strength of my country's foundry industry development plan, we firmly believe that my country's foundry industry chain will achieve gratifying results.

Experts indicate that to improve the level of casting technology from the source, the following four points must be ensured: First, the development trend simulation technology, improve the accuracy of predictive analysis, improve the manipulation of processing technology, and increase the output rate. The cyclical problems have not been mastered very well, which in turn jeopardizes the yield rate in mass production. Second, the integration of production, education and research. In addition to the enhancement of innovation spirit and the improvement of research and development capabilities, the company’s technological innovation must also attach great importance to and enhance the"Production, learning, and research" are closely integrated. Third, attach great importance to the research and development of raw materials and products. Raw materials are the basis of industrial production, and there is still a lot of work to be done today. In the aerospace industry, the research and smelting technology of some new materials such as alloy products, especially heat-resistant alloys, also need to be improved, which is still very different from overseas. Fourth, attach importance to the improvement of equipment technology. The key to the processing technology is still the problem of equipment. Many major equipment, such as some fixed coagulation equipment, are still imported. Therefore, the product research and development of high-precision casting equipment is still the top priority.