Due to the complex structure of diesel engine cylinder head, high requirements for surface accuracy and casting quality, the traditional manual production method is applied, and the sand core deformation is large due to the influence of mold accuracy, core box locking degree, sand scraping surface height, sand core compactness and other factors. It is difficult to ensure the dimensional tolerance of diesel engine cylinder head cold core box casting. The cold core box with high efficiency, low consumption and high dimensional control accuracy is used for core making, The core making process and production efficiency of diesel engine cylinder head cold core box casting are greatly improved, and the core box is not easy to deform, effectively ensuring the high-precision sand core size; It simplifies the molding process, and can also avoid the casting defects of the cold core box of the diesel engine cylinder head caused by the core size error, position error and other factors and the resulting casting rejection rate. The cold core box casting of diesel engine cylinder head produced has almost no flash and burr, high dimensional accuracy and small cleaning workload.
The cold core technology is used to manufacture the sand core of the diesel engine cylinder head. The dimensional accuracy and surface quality of the core, the accurate positioning and production efficiency of the core and core, the core and external mold are mutually matched; The application of lower sand injection pressure can not only reduce the amount of compressed air, reduce the wear of the core box, extend the service life of the core box, but also reduce the number of core box exhaust plugs, and reduce the manufacturing and maintenance costs of the core box. At the same time, it has successfully solved the problems of heavy labor intensity, serious environmental pollution and complex production process caused by traditional manual operation methods, and has improved the dimensional accuracy and internal and external surface quality of diesel engine cylinder head cold box castings.