|Table of Contents|

Analysis of casting defect mechanism and optimization of complex shell casting based on numerical simulation(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2021年04期
Page:
96-102
Research Field:
工艺与材料
Publishing date:

Info

Title:
Analysis of casting defect mechanism and optimization of complex shell casting based on numerical simulation
Author(s):
WU Xiaoming; PENG Chao; WANG Yu; GUO Bei
(Xian Space Engine Company, Xian 710100,China)
Keywords:
complex shell casting defect mechanism optimization numerical simulation feeding channel
PACS:
V462
DOI:
-
Abstract:
For improving the qualification rate of complex shell,the mechanism of fluorescence loosen defects was described by using section check,endoscopy and numerical simulation.The process improvement measures were put forward.It was determined that the causes of defects were uncoordinated temperature field and lack of effective feeding source based on the simulation results of solidification process and the analysis of product structure.Through optimizing temperature field,adding source to feed and the feeding capacity of defect was enhanced.By using above measures,the simulation results show that the solidification time of the original first solidification area is delayed,a smooth feeding channel is established and the loose defects of the original problem area are eliminated.The verification results of small batch products show that the problem of fluorescence defects is eliminated,the qualified rate of products is improved and products are delivered in time.

References:

[1] 中国机械工程学会铸造分会.铸造手册(第3卷):铸造非铁合金[M].北京:机械工业出版社,2011.
[2] 隋育栋,王渠东.铸造耐热铝合金在发动机上的应用研究与发展[J].材料导报,2015,29(3):14-19.
[3] 杨守杰,戴圣龙.航空铝合金的发展回顾与展望[J].材料导报,2005,19(2):76-80.
[4] 范晓明.金属凝固理论与技术[M].2版.武汉:武汉理工大学出版社,2019.
[5] 蔡启舟,吴树森.铸造合金原理及熔炼[M].北京:化学工业出版社,2010.
[6] 阚精诚,刘继广,杨友文,等.铸造充型过程数值模拟技术的研究现状与展望[J].热加工工艺,2019,48(13):9-13.
[7] 周建新,廖敦明.铸造CAD/CAE[M].北京:化学工业出版社,2009.
[8] 王玉,吴晓明,任新苗,等.铸件缺陷机理分析及凝固温度场工艺优化[J].火箭推进,2020,46(3):83-89. WANG Y,WU X M,REN X M,et al.Analysis of casting defect mechanism and optimization of solidification temperature field[J].Journal of Rocket Propulsion,2020,46(3):83-89.
[9] 杨欢庆.航天液体动力高性能复杂铸件铸造CAD/CAE技术应用[C]//2019中国铸造活动周论文集.武汉:[s.n.],2019.
[10] 黄进,张勇佳,殷亚军,等.基于华铸CAE的航空发动机铝合金传动件铸造数值模拟与工艺优化[J].特种铸造及有色合金,2019,39(8):846-849.
[11] 孙浩,崔恩强,张娜,等.ZL205A合金舱体低压工艺设计及数值仿真应用[J].上海航天,2019,36(2):131-135.
[12] 夏伟,杜航,徐慧,等.基于铸造仿真技术的铝合金缸盖缩孔缺陷控制[J].特种铸造及有色合金,2019,39(11):1202-1204.
[13] 文波,夏志单,季珊林,等.复杂薄壁框类铝合金铸件工艺设计及数值模拟[J].特种铸造及有色合金,2018,38(7):768-771.
[14] 钱怡君,程兆虎,于浩.数值模拟在铸造中的应用进展[J].精密成形工程,2012,4(4):39-43.
[15] 周建新.铸造计算机模拟仿真技术现状及发展趋势[J].铸造,2012,61(10):1105-1115.
[16] 郭维,白东安.液体火箭发动机用超低比转速离心泵优化设计[J].火箭推进,2011,37(5):19-23. GUO W,BAI D A.Optimal.design of ultra-low specific speed centrifugal pump for LRE[J].Journal of Rocket Propulsion,2011,37(5):19-23.
[17] 丛伟.模数法在铸钢件冒口设计中的应用[J].沈阳航空工业学院学报,2002,19(4):17-19.
[18] 赫振梅,李卿卿,李晓东.冒口模数定量计算法在铸钢工艺设计上的应用[J].铸造技术,2020,41(11):1037-1041.
[19] 徐巧志,王瞳,沈旭,等.基于距离场的铸钢件冒口设计方法及应用[J].铸造,2018,67(6):479-482.
[20] 纪艳卿,陈鹏荣.高强不锈钢离心轮浇冒口的设计与计算[J].火箭推进,2015,41(4):90-94. JI Y Q,CHEN P R.Design and calculation of casting head for high strength stainless steel centrifugal impeller[J].Journal of Rocket Propulsion,2015,41(4):90-94

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