厚大轮式铸件的铸造工艺设计  

Design of Casting Process for Heavy Wheel Castings

作　　者：阎涛[1] 金桂芹[1] 陈翠凤 

机构地区：[1]黄冈师范学院机电学院,湖北黄冈438000 [2]石家庄凯普特动力传输机械有限责任公司,河北石家庄052160

出　　处：《铸造技术》2014年第11期2754-2755,共2页Foundry Technology

摘　　要：该轮式铸件材质为HT250,壁较厚,采用树脂砂型铸造,为消除铸件在热节部位出现的缩松缺陷,通过合理控制浇注温度及速度,优化冒口设计,并充分利用石墨化膨胀的自补缩作用,最终消除该缺陷,使其完全满足性能要求,并为直径在800-1 500 mm间的厚大型轮式铸件生产提供参考。To reduce or eliminate the shrinkage defects in wheel castings with thick walls at the hot section of the site in resin sand casting, the castings were made of HT250, through reasonable controlling the pouring temperature and speed,optimizing riser design, and making full use of graphite expansion role in self-feeding, the defects were eventually eliminated, the castings fully meet performance requirements.

关 键 词：厚大铸件 缩松缺陷 石墨化膨胀 树脂砂 

分 类 号：TG24[金属学及工艺—铸造]