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目前我国生产的铸件表面光洁度差、尺寸精度比较低,如按国际标准要求机械化造型达到8-10级而我国只能达到10-12级,而直接影响铸件尺寸精度的问题较多,如材料、工艺、模具等问题。作者根据多年实践经验,对砂型铸造模具,谈一些认识,并对模具的设计、制造、使用的最佳的技术参数提出一些看法。文中提供了由于铸造模具影响铸件精度的三个主要问题的因素和解决的措施。
At present, the castings produced in our country have poor surface finish and low dimensional accuracy. For example, the mechanized shapes required by international standards can reach 8-10 grades while China can only reach 10-12 grades. However, there are many problems that directly affect the dimensional accuracy of castings such as materials, Technology, mold and other issues. Based on years of practical experience, the author of sand casting mold, talk about some understanding, and mold design, manufacture, use the best technical parameters put forward some views. The article provides three main problems due to the impact of casting mold casting accuracy of the factors and solutions.