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根据均稀凝固理论，通过对浇注系统不同方案的可淬硬铸铁汽车凸轮轴温度场的测试实验和凝固缺陷分析后发现，在现行其它工艺基本稳定条件下，浇注系统的直浇道相对最优值为铸件当量壁厚的０．９７倍。铸件结构是影响可淬硬系统铸铁凸轮轴铸件凝固过程的主要因素，并在生产实际中得到验证，有效地指导了生产实际
According to the theory of homogeneous solidification, through the test of the camshaft temperature field of hardenable cast iron car with different schemes of pouring system and the analysis of the solidification defect, it is found that the sprue of pouring system is relatively optimal under the current other process basically stable conditions 0.97 times the equivalent wall thickness of the casting. Casting structure is the main factor that affects the solidification process of cast iron camshaft castings of hardenable system and has been verified in production practice to effectively guide the actual production