The basic idea of computer solidification simulation is that firstly, the geometric modeling of casting entity is meshed and discretized to obtain the topological data of each element; Secondly, after the continuum is discretized, the differential equations can be easily transformed into algebraic equations and solved in a special...
The level of numerical simulation has reached a high level in developed countries, especially in the United States and Europe since the 1960s. With their strong economic foundation and technical strength, they have made remarkable achievements in this field. In China, although it started late, its development speed is...
Compared with foreign countries, the research on numerical modeling of casting solidification in China started late, but made rapid progress. In the late 1970s, Shenyang Foundry Research Institute, Dalian University of technology and Tsinghua University successively carried out the research on Foundry digitization. In terms of mathematical and physical...
The basis of casting process design is the casting forming theory. The casting forming theory studies the mechanical, physical and chemical changes of metal in the process of transformation from liquid to liquid and solid mixed state and then to solid state. These changes occur in the mold cavity....
Firstly, cast the steel castings of the coupler according to the original casting process design. The main problems exposed are: there are air hole defects on the large plane and side of the steel casting coupler body, and those with larger size must be welded, as shown in figure...
Due to the differences in product structure, weight, process equipment of production enterprises, production conditions and process technology level, there are also some differences in the sand casting process scheme design of motor shell at home and abroad, but there are mainly the following schemes: Scheme 1: horizontal molding...
For thousands of years, people have mainly solved engineering problems through trial and error, especially how to produce high-quality castings. Because casting includes smelting, molding, pouring and post-treatment processes, each process requires professional knowledge and technology, but most factories complete all processes alone. Since the 20th century, scientific research...
As a material processing technology that has been used for thousands of years, sand casting is the most direct way from liquid metal to product molding. At the same time, this most direct material molding technology also contains great difficulties. Because in this manufacturing process, multiple links need to...
1. Molding operation process In the original process (see Figure), the type is divided from one end, and the gray cast iron is placed in the lower box. In order to ensure the advantage of gravity feeding, a large gravity head is required, so the height of the upper...
At present, the production of heavy-duty lathe locking block has the advantages of low yield, high cost, complex on-site operation process, shrinkage and porosity defects. Based on this situation, the process needs to be improved. The locking block is a thick wall casting, with a wall thickness of 260mm,...