铬铁矿珍珠砂在铸钢件中的应用  

Application of Chromite Pearl Sand on Steel Casting

作　　者：张朋涛 刘敏娟 程锋涛 

机构地区：[1]中冶陕压重工设备有限公司,陕西西安711711

出　　处：《铸造设备与工艺》2017年第2期50-52,共3页Foundry Equipment & Technology

摘　　要：铸件在热节处、大圆角处容易产生裂纹、粘包砂、砂眼、气孔及低的溃散性等铸造缺陷。本文提出了将铬铁矿砂和珍珠砂以一定的比例混合后放在铸钢件的热节处和大圆角处的造型方法,试验证明铬铁矿砂和珍珠砂以一定的比例混合后使用可有效降低铸钢件的粘砂、包砂和裂纹缺陷,同时提高了型砂的透气性和溃散性,降低了铸件成本。To remove casting defects, such as crack, burnt-in sand, sand hole, porosity and low collapsibility, etc, appeared in the hot spot and large rounded corner,the chromite sand and the pearl sand were mixed in a certain proportion and applied in the hot spot and large rounded corner.The results showed that the defects were reduced, the permeability and collapsibility of sand improved, the casting cost reduced at the same time

关 键 词：珍珠砂 铬铁矿砂 铸件热节 

分 类 号：TG221[金属学及工艺—铸造]