钛合金中介机匣快速熔模铸造工艺研究
|
摘要
钛合金中介机匣属于大型铸件,薄壁且结构复杂;采用3D打印与熔模制造技术相结合,利用选区激光烧结(SLS)技术实现了中介机匣精密铸造用聚苯乙烯熔模的快速成型。利用ProCAST软件对中介机匣的铸造工艺及其缩松等缺陷进行了模拟分析,通过离心铸造技术制备了冶金品质优良,尺寸精度达到CT7级的中介机匣铸件。
Titanium alloy intermediate casing is a typical large components with many thin-walled and complicated structures.In the trial stage,it is a high cost and time-consuming process to manufacture the wax pattern of intermediate casing by mold.The molten pattern forming technology based on the principle of 3 Dprinting could solve effectively this problem.The selective laser sintering(SLS)technology was used to realize the rapid prototyping of the polystyrene molten pattern in the precision casting of the intermediate casing.The casting process of the intermediate casing and the shrinkage defects were simulated by ProCAST software.The titanium alloy intermediate casing with excellent metallurgical quality and size accuracy CT7 was prepared by centrifugal casting technology.
Titanium alloy intermediate casing is a typical large components with many thin-walled and complicated structures.In the trial stage,it is a high cost and time-consuming process to manufacture the wax pattern of intermediate casing by mold.The molten pattern forming technology based on the principle of 3 Dprinting could solve effectively this problem.The selective laser sintering(SLS)technology was used to realize the rapid prototyping of the polystyrene molten pattern in the precision casting of the intermediate casing.The casting process of the intermediate casing and the shrinkage defects were simulated by ProCAST software.The titanium alloy intermediate casing with excellent metallurgical quality and size accuracy CT7 was prepared by centrifugal casting technology.
引文
[1]吴欢,赵永庆,葛鹏.航空发动机用关键钛合金部件先进设计及制造技术[J].材料导报,2011,A25(4):101-105.
[2]孙丹,徐新成,汪东红,等.基于3D打印的叶轮快速熔模铸造工艺研究[J].特种铸造及有色合金,2016,36(11):1 172-1 174.
[3]梁小文,徐志锋,饶江华,等.基于SLS整体砂型的薄壁铝铸件的快速成型[J].特种铸造及有色合金,2017,37(2):225-228.
[4]魏青松,史玉升.增材制造技术原理及应用[M].北京:科学出版社,2017.
[5]SINGH S,SHARMA V S,SACHDEVA A.Optimization analysis of shrinkage in selective laser sintered polyamide parts[J].Materials Manufacture Processing,2012,27(6):707-714.
[6]梁培.选区激光烧结用覆膜砂制备及其成形工艺研究[D].南昌:南昌航空大学,2010.
[7]刘洪军,李亚敏,黄乃瑜,等.基于SLS原型的快速(重力)铸造工艺[J].特种铸造及有色合金,2005,25(7):408-410.
[8]楚玉东,常辉,黄东,等.ZTC4钛合金机匣构件离心铸造过程的数值模拟[J].特种铸造及有色合金,2012,32(2):133-136.
[9]LI C Y,WU S P,GUO J J,et al.Model experiment of mold filling process in vertical centrifugal casting[J].Materials Processing Technology,2006,176:268-272.
[10]李晨曦,吴春京,郭鸿志,等.铸造充型过程流场计算机模拟技术评述[J].铸造,1997(2):47-50.
[2]孙丹,徐新成,汪东红,等.基于3D打印的叶轮快速熔模铸造工艺研究[J].特种铸造及有色合金,2016,36(11):1 172-1 174.
[3]梁小文,徐志锋,饶江华,等.基于SLS整体砂型的薄壁铝铸件的快速成型[J].特种铸造及有色合金,2017,37(2):225-228.
[4]魏青松,史玉升.增材制造技术原理及应用[M].北京:科学出版社,2017.
[5]SINGH S,SHARMA V S,SACHDEVA A.Optimization analysis of shrinkage in selective laser sintered polyamide parts[J].Materials Manufacture Processing,2012,27(6):707-714.
[6]梁培.选区激光烧结用覆膜砂制备及其成形工艺研究[D].南昌:南昌航空大学,2010.
[7]刘洪军,李亚敏,黄乃瑜,等.基于SLS原型的快速(重力)铸造工艺[J].特种铸造及有色合金,2005,25(7):408-410.
[8]楚玉东,常辉,黄东,等.ZTC4钛合金机匣构件离心铸造过程的数值模拟[J].特种铸造及有色合金,2012,32(2):133-136.
[9]LI C Y,WU S P,GUO J J,et al.Model experiment of mold filling process in vertical centrifugal casting[J].Materials Processing Technology,2006,176:268-272.
[10]李晨曦,吴春京,郭鸿志,等.铸造充型过程流场计算机模拟技术评述[J].铸造,1997(2):47-50.