摘要
介绍了一种新型的复合精铸工艺,研究了EPS(可发性聚苯乙烯)模样制作与表面光洁化处理和制壳等相关工艺技术,解决了EPS模样表面品质差、模样收缩变形、制壳涂挂性差、型壳焙烧破损等技术问题,实现了EPS模复合精铸技术在汽车低合金复杂碳钢件中的生产应用。结果表明,与低温蜡模料熔模铸造工艺对比,制模效率提高2倍以上,制壳模组总质量减少一半,免脱蜡,铸件尺寸精度达到CT6级,表面粗糙度达到Ra6.3mm,满足汽车铸件品质要求。
A new composite investment casting technique was described,and the related processes including EPS pattern making,surface smoothing disposal and shell-making,were analyzed systematically.It is solved for the following technical problems including low surface quality,pattern contraction distortion,poor shell-making coating property and shells burning failure for EPS pattern.The EPS investment casting was applied successfully in volume-production of complicated automobile lower alloy carbon steel components.Compared with the low temperature wax process,it shows advantages as follows：the pattern-making efficiency increased by 2times,total shell weight decreased by 50%,and dewaxing-free process as well as the dimension precision degree reaching CT6with surface quality of Ra6.3.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2014年第1期77-81,共5页
Special Casting & Nonferrous Alloys
关键词
EPS复合精铸
碳钢件
应用
EPS Composite Investment Casting
Steel Casting
Application
