The precision casting forming technology of automobile castings refers to a kind of casting forming method. The castings produced by this kind of forming technology can be directly used without cutting. With the continuous improvement of the requirements for the size, quality, precision and other aspects of automobile castings, the precision casting forming technology of automobile castings has developed rapidly. There have been precision sand casting, lost foam casting, controlled pressure casting, pressure casting and other processes. The Cosworth aluminum alloy casting method is to use the combination of zirconium sand and sand core, and use the electromagnetic pump to control the pouring method to realize the mass production of aluminum alloy cylinder blocks. At present, a large number of process models have emerged for this technology, for example, low pressure pouring can be used to replace the electromagnetic pump pouring, and the wall thickness of aluminum alloy cylinder blocks produced by this work can reach less than 4 mm, It is the representative process of precision casting forming technology for automobile castings at present. Vacuum casting, oxygen-filled die-casting, semi-solid metal rheology or thixotropic die-casting and other technologies are developed on the basis of high-pressure casting technology. These technologies have good effects in removing defects of automobile castings and improving the quality of automobile castings. At the same time, compared with high-pressure casting technology, the application scope of die-casting parts is further expanded.
The rapid development of the automobile industry and the continuous improvement of the automobile output require the automobile to develop in the direction of high quality, high performance, lightweight, integration, low consumption and low cost. For the automobile production, about 20% of the parts belong to castings, which requires the application of various advanced technologies and the use of new materials to improve the quality of automobile castings, Ensure that the production of automobile castings can meet various requirements of automobile manufacturing, thus improving the overall quality of automobile manufacturing.