Study on investment casting process of K4002 cover plate based on laser sintering rapid molding technology
LI Pei-jia,XU Zhen-nan,LIANG Chao,ZHANG Ya-yan,CHEN Xing-fu,WU Jian-tao
(1.Science and Technology Information Department, Central Iron and Steel Research Institute, Beijing 100081, China; 2.GAONA Aero Material Co., Ltd., Beijing 100081, China
Abstract：Abstract： The wax model of plate or arc surface casting which is prepared by rapid prototyping manufacturing technology has a large volume expansion during dewaxing, resulting in cracking of shell mold, deformation of the casting size. The cover plate casting is a largescale thinwalled casting with an outline size of 350mm × 260mm × 10mm, and the distance between the lowest point of arc and the highest point is 23mm. The wax model of cover plate prepared by rapid prototyping manufacturing technology increases the difficulty of investment casting process. Pasting a wax plate on the wax mold prepared by rapid prototyping manufacturing technology, with the melting point difference and volume allowance between the two, shell mold cracking is improved. With side pouring system, proper sand filling molding and smelting parameters, casting with qualified metallurgical quality and dimensional accuracy is produced.
李培佳1，许振南2，梁超2，张亚然１，陈兴福2，吴剑涛2. 基于快速成型蜡膜的K4002合金大型面盖板精铸工艺研究[J]. 钢铁研究学报, 2020, 32(6): 491-496.
LI Pei-jia1,XU Zhen-nan2,LIANG Chao2,ZHANG Ya-yan1,CHEN Xing-fu2,WU Jian-tao2. Study on investment casting process of K4002 cover plate based on laser sintering rapid molding technology. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 491-496.
2020, Vol. 32 
