一种铸钢件表面橘皮缺陷的防止方法  

Method for Preventing Surface Defect of Cast Steel Part

作　　者：马飞 赵健东 胡进林 MA Fei;ZHAO Jian-dong;HU Jin-lin(Kocel Steel Foundry Co.,Ltd.,Yinchuan Ningxia 750021,China)

机构地区：[1]共享铸钢有限公司,宁夏银川750021

出　　处：《铸造设备与工艺》2024年第5期53-54,共2页Foundry Equipment & Technology

摘　　要：大型铸钢件表面容易出现橘皮缺陷,其主要原因是砂型表面的刚玉粉涂料在高温下与钢液发生化学反应。为了解决这一问题,本文提出了一种优化的铸造工艺,通过使用硅砂+铬铁矿砂+锆英粉涂料的组合设计,避免刚玉粉与钢液的接触。研究表明,采用三遍锆英粉涂料能够有效消除橘皮缺陷,提升铸件表面质量,减少清理难度,并显著提高生产效率。对于橘皮缺陷较轻的铸件,可通过涂覆两遍锆英粉涂料以降低生产成本。该方法为提升铸钢件表面质量提供了切实可行的技术途径。The large steel castings is prone to surface defects,primarily caused by chemical reactions between the corundum powder coating on the sand mold and molten steel at high temperatures.An optimized casting process is proposed in this study,utilizing a combination of silica sand,chromite ore,and zircon powder coatings to prevent contact between corundum powder and molten steel.The research demonstrates that applying three layers of zircon powder coating effectively eliminates orange peel defects,enhances the surface quality of castings,reduces cleaning difficulty,and significantly improves production efficiency.For castings with minor orange peel tendencies,applying two layers of zircon powder coating can reduce production costs.This method provides a practical and effective solution for improving the surface quality of steel castings.

关 键 词：橘皮缺陷 铸钢件 铬铁矿砂 刚玉粉 锆英粉 

分 类 号：TG245[金属学及工艺—铸造]