The structure of the guide wheel?

        When casting, the shortening of liquid and solid castings should be fully considered in terms of structure, shape, size, wall thickness and transition effect of castings, appropriate process parameters should be selected, and casting defects such as shrinkage holes should be avoided. The design of the casting pouring riser system is reasonable, if you want to use the cold iron process method, such as setting a reasonable site, the density of the internal arrangement of the casting, and try to avoid the occurrence of stress concentration.

        Due to the structure of the guide wheel or the improper planning of the pouring system, the molten metal splashed violently during the pouring process to form secondary doping. As we all know, doping is a very important type of casting defects, accounting for more than half of the total defects. This defect may exist in all castings, only the severity is different. The standard for the control of doping defects is mainly based on castings Depending on function and use, the more castings, the more severe the castings with severe working conditions, the more severe the impurities, such as automobile castings, engine castings, wind power castings, steam turbine castings, machine tool castings and so on.

        While adhering to the status of a casting power, my country’s stainless steel casting technology has also made rapid progress, and gradually moved towards the goal of casting a powerful country, although this is still a long time. At present, my country’s new casting technology. The application of new technology is mainly manifested in: advanced sand casting steel molding line. The number of cores is increasing, resin sand technology is widely used, cast steel VOD, lost foam casting, computer simulation technology. Rapid prototyping Use of skills, etc. The rapid increase in the output value of castings in my country is caused by the substantial increase in domestic demand for castings on the one hand, and on the other hand, it is the result of the transfer of casting production in developed countries and regions to China, which makes the application of filtration technology in casting developed in recent years. Soon, this technology has obvious effects on reducing the defects of impurities and pores, and improving the mechanical performance and processing performance of castings, which has attracted more and more attention from foundry enterprises.