牵引销铸造工艺改进  

Improvement of Casting Technology for the Traction Pin

作　　者：王雪峰 付海昌 张逸纯 WANG Xuefeng;FU Haichang;ZHANG Yichun(CRRC DALIAN Co., Ltd., Dalian 116022, China)

机构地区：[1]中国中车大连机车车辆有限公司,辽宁大连116022

出　　处：《铸造技术》2018年第6期1248-1249,1253,共3页Foundry Technology

摘　　要：牵引销是和谐电力机车上的关键铸钢件,磁粉探伤不允许存在裂纹缺陷,其产品质量直接影响铁路行车安全。生产中发现有的牵引销毛坯出现砂眼、粘砂、冒口切割困难等缺陷和问题。有针对性的对产品结构进行了分析和研究,采取有效措施进行工艺改进,通过浇注系统改进、取消保温冒口、增加外冷铁、在砂芯局部包覆铬铁矿砂等措施,解决了相关缺陷问题,批量生产了合格铸件。The traction pin is the key casting steel part on the harmonious electric locomotive. The crack defects were not allowed in the magnetic particle inspection. The quality of the product directly influenced the railway traffic safety. It was found that there were some defects and problems such as sand holes, clay sand, cutting difficulty, and so on. The product structure had been analyzed and studied, the effective measures take to improve the process, through the improvement of the pouring system, the removal of the insulated riser, the increase of the outer cold iron, and the partial coating of ferrochrome ore in the sand core, the related defects are solved, the qualified casting are quantity produced.

关 键 词：牵引销 粘砂 砂眼 

分 类 号：TG269[金属学及工艺—铸造]