锻压技术

轴盘类零件差温无模锻造近净成形有限元模拟

英文标题：FEM simulation on near net forming of thermal differential dieless forged shaft-disc type components

单位：南昌航空工业学院南昌航空工业学院南昌航空工业学院南昌航空工业学院南昌航空工业学院南昌航空工业学院 410083 410083 410083 410083 410083 410083

分类号：TG316

出版年,卷(期):页码：2002,27(5):10-13

摘要：

轴盘类零件广泛应用于工业领域 ,其制造方法通常是分别加工轴和盘 ,然后组装而成 ,或是采用模锻工艺生产。这样 ,不仅生产周期长 ,而且生产成本也高。为了克服这个问题 ,拟采用一种新的加工方法 ,即差温无模锻造来实现此类零件的近净成形 ,以期达到减少生产成本 ,缩短生产周期之目的。本文采用热力耦合有限元方法 ,模拟了圆柱体坯料在环形热源局部加热下的无模锻造过程 ,从理论上证实了用这种方法预成形轴盘类零件的可行性。

The manufacturing method of shaft\|disc type components used widely in industry are ordinarily to machine the shafts and discs separately, and then assemble them. Such process is often time\|consuming. The new process, i.e. thermal differential dieless can realize near net forming of shaft\|disc type components,thus by which the difficulties existing in traditional manufacturing process may be solved.In this paper,the thermal differential dieless forging of local\|ring\|heated cylindrical billet is simulated by coupled thermal\|viscoplastic FEM,and the feasibility of preforming shaft\|disc type components by this new process is theoretically validated.

基金项目：

江西省材料科学与工程研究中心基金资助项目

参考文献：

1　FHOsman,EMeerygold.Effectofdifferentialheatingonmodesofplasticdeformationinforgingprocess.Proc.5thInt.Conferenceontechnologyofplasticity,Ohio,USA ,1977:295298
2　EMerrygold,FHOsman.Forgingofcomplexgeometrieswithdif ferentialheating.J.ofMaterialsProcessingTechnology,1998,80(4):179183
3　CLi.Thermaldifferentialforging.BEngMEFinalYearProjectRe port(Supervisor:DrMHua),MEEMDept.,CityUniversityofHongKong,April1997.
4　WKSiu.Flowmeasurementsinthermaldifferentialupsettingforg ing.BEngMEFinalYearProjectReport(Supervisor:Dr.M .Hua),MEEMDept.,CityUniversityofHongKong,April1998.
5　SKobayashi,SIOh,TAltan.Metalformingandthefiniteelementmethod.NewYork:OxfordUniversityPress,1989.
6　SHChung,SMHwang.Aderivativebasedapproachtoprocessop timaldesigninhotforging.Simulationofmaterialsprocessing:Theo ry,MethodsandApplications,ProceedingsofNUMIFORM’98,Huetink&Baaijens(eds),1998:559564.
7　杨世铭传热学北京:高等教育出版社,1980
8　孔祥谦有限单元法在传热学中的应用北京:科学出版社,1986
9　NRebelo,SKobayashi.Acoupledanalysisofviscoplasticdeforma tionandheattransfer-Itheoreticalconsideration.Int.J.Mech.Sci.,1980,22:699705
10　ASMMetalsReferenceBook.ThirdEdition,1993.
11　Bejan.Heatertransfer.NewYork:JohnWiley&Sons,1993.
12　王连生,马喜腾,曹起鑲.三维热锻中动态再结晶过程的数值模拟及试验研究.机械工程学报,1996,32(5):2428

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】