Selection of Resin Sand in Resin Sand Casting Process From Bestech company

The choice of resin sand raw materials has a greater impact on the casting cost, because the quality of the resin sand affects the addition and consumption of various materials on the one hand, and the quality index of the casting on the other hand.
In the resin sand casting process, there are many types of resins used as molding sand binders in production. In addition to the three commonly used furan resins, phenolic resins and urethane resins, there are also unsaturated polyester resins, epoxy resins and polyacrylic acid. Sodium etc. When selecting resin sand for machine tool castings, in addition to having a general understanding of the performance, price and market supply conditions of various resins, it is also necessary to analyze the adaptability of various hardening methods, and then according to the alloy type, casting characteristics, production batch and factory select the applicable resin and reasonable process parameters according to the actual conditions.
It is also very important to choose good quality raw sand. It is necessary to pay attention to the chemical composition and particle size of the raw sand. When resin sand is used, the impact of raw sand on the performance of resin sand will be very prominent. In addition to considering the chemical composition and particle size of the raw sand, it is also necessary to have a deep understanding of the influence of factors such as its particle size composition, particle shape, surface characteristics and acid demand, and make appropriate selections according to needs.
The resin used in the resin sand is more expensive, so it has a greater impact on the casting cost. At the same time, due to the uneven production equipment of the manufacturer, the quality of the resin produced is also quite different. If a poor quality resin is selected, it will affect the quality of resin sand molding sand, increase casting waste, and increase the amount of resin added. The direct result will increase the casting cost. Therefore, the choice of resin sand raw materials cannot be It is only determined based on the technical data provided by the manufacturer, and the resin sand manufacturer’s production equipment, production process and quality control methods should be understood. It is recommended to choose resin sand products from well-known large enterprises with good reputation.