本文阐述了呋喃树脂砂铸型中浇注的一般准则,借此能够减少造型材料对铸件裂纹形成的影响砂型铸造时,常常出现钢铸件的裂纹,裂纹的形成由铸件凝固和冷却过程中出现的应力所致,可归诸于局部和暂时不均匀的温度分布,有体积变化的相变和收缩阻碍。冶金学和金属学对铸钢件热裂形成的影响曾有过简短而总结性的描述,同样,关于铸型和型芯对铸件的收缩阻碍已经多次的报导过。这些工作大多数局限于讨论各种型砂参数的影响,所列举的资料中,至今还没有建立关于造型材料充分的定量评价准则。因此,作者根据呋喃树脂石英砂中铸造园筒试验,研究了型芯对铸钢件裂纹形成不利影响,此外,通过对造型材料的 This article describes the general guidelines for casting furan resin sand molds, thereby reducing the impact of molding materials on the formation of cracks in castings. Cracks in steel castings often occur during sand casting. The formation of cracks is caused by the stresses that occur during solidification and cooling of the castings Due to local and temporary non-uniform temperature distribution, phase change with volume changes and shrinkage impediments. The effects of metallurgy and metallurgy on the hot cracking of steel castings have been described briefly and conclusively. Likewise, the shrinkage impediments to castings by molds and cores have been reported several times. Most of these efforts have been limited to discussing the effects of various sand parameters. To date, no quantitative criteria have been established for modeling materials. Therefore, the author based on furan resin, quartz sand casting cylinder test, the study of the core of steel castings adversely affect the formation of cracks, in addition, through the modeling material