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Enhancing surface integrity by high-speed extrusion machining
Liu Y; Cai SL; Shang XC; Dai LH(戴兰宏); Cai, SL (reprint author), State Grid Corp China, China Elect Power Res Inst, Beijing 100192, Peoples R China.; Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
2017-03-01
Volume89Issue:42863Pages:2141-2150
ISSN0268-3768
AbstractHigh-speed machining (HSM) is an advanced machining technology to form components. However the poor surface integrity tends to appear due to chip flow instability in HSM. It is found that the surface integrity results from the competition of shear deformation instability between in primary shear zone (PSZ) and in separating shear zone (SSZ). To improve the surface integrity of machined components the systematic high-speed extrusion machining (HSEM) experiments of magnesium alloy AZ31B with different constraint extrusion factors (CEFs) were carried out. The instability of shear deformation in PSZ is suppressed and the microwaves on machined surface disappear when CEF is equal to or larger than a certain value. The measurements of the machined surface show that an improvement of surface integrity is achieved if CEF exceeds a certain value. The theoretical model for HSEM was established to elucidate the critical CEF. The underlying physics of surface integrity in HSEM is further revealed. The experimental results verify the validity of the theoretical model.
KeywordHigh-speed Extrusion Machining Surface Integrity Characteristic Instability Time Chip Morphology Transition
DOI10.1007/s00170-016-9252-6
Indexed BySCI ; EI
Language英语
WOS IDWOS:000396101100074
WOS KeywordCHIP FORMATION ; MAGNESIUM ALLOY ; CUTTING SPEED ; SHEAR ; INSTABILITY ; TI-6AL-4V ; STATE ; MODEL
WOS Research AreaAutomation & Control Systems ; Engineering
WOS SubjectAutomation & Control Systems ; Engineering, Manufacturing
Funding OrganizationNational Natural Science Foundation of China(11132011) ; Fundamental Research Funds for the Central Universities(FRF-TP-15-101A1) ; China Postdoctoral Science Foundation(2016M591066) ; Opening Fund of State Key Laboratory of Nonlinear Mechanics ; National Basic Research Program of China(2012CB937500) ; CAS/SAFEA International Partnership Program for Creative Research Teams
DepartmentLNM冲击动力学与新型材料力学性能
Classification二类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60579
Collection非线性力学国家重点实验室
Corresponding AuthorCai, SL (reprint author), State Grid Corp China, China Elect Power Res Inst, Beijing 100192, Peoples R China.; Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Liu Y,Cai SL,Shang XC,et al. Enhancing surface integrity by high-speed extrusion machining[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2017,89(42863):2141-2150.
APA Liu Y,Cai SL,Shang XC,戴兰宏,Cai, SL ,&Dai, LH .(2017).Enhancing surface integrity by high-speed extrusion machining.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,89(42863),2141-2150.
MLA Liu Y,et al."Enhancing surface integrity by high-speed extrusion machining".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 89.42863(2017):2141-2150.
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