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Analysis of inner fold and bulge defects on J55 steel for

3D FEA simulation of 4A11 piston skirt isothermal

complex inner surface, the metal flow velocity to the upper end face varies so much that a bulge is formed which might result in fold or under filling. Fig.6 indicates the under filling in the thin wall area. Under a certain temperature and deformation, the forging load 3D FEA simulation of 4A11 piston skirt isothermal forging Analysis of inner fold and bulge defects on J55 steel for Oct 01, 2008And it also made the forging load increase, and energy consumption as well. As shown in Fig.5, together with a complex inner surface, the metal flow velocity to the upper end face varies so much that a bulge is formed which might result in fold or under filling. Fig.6 indicates the under filling in

A Unified Mechanism for the Formation of Oscillation Marks Analysis of inner fold and bulge defects on J55 steel for

Oct 06, 2011Oscillation marks (OMs) are regular, transverse indentations formed on the surface of continuously cast (CC) steel products. OMs are widely considered defects because these are associated with segregation and transverse cracking. A variety of mechanisms for their formation has been proposed (e.g., overflow, folding, and meniscus freezing), whereas different mark types have also been AIP Advances Vol 9, No 8Noise analysis and active noise control strategy of transcranial magnetic stimulation device. Chang Liu, Hongfa Ding, Xiao Fang, Zhou He and Zhixun Wang. Analysis of inner fold and bulge defects on J55 steel for Analysis of inner fold and bulge defects on J55 steel for oil casing pipe. Bosi Li, Hangyu Zhu, Zhengliang Xue, Zhengfeng Qin and Jian Sun.

Analysis of inner fold and bulge defects on J55 steel for Analysis of inner fold and bulge defects on J55 steel for

Aug 13, 2019In this study, the typical macroscopic and microscopic morphologies of inner fold and bulge defects of J55 oil casing pipe are observed by three-dimensional China API Oilwell Drill Pipe - China Nc38 Drill Pipe, Nc50 Analysis of inner fold and bulge defects on J55 steel for Heat treatment programs are established on the basis of the actual chemical analysis of each heat of steel to ensure the materials meet or surpass the requirements of API Specification. 3. The drill pipe undergo a full-length inspection that checks the defects; especially the strict inspections on weldneck/upset region are preformed with our Analysis of inner fold and bulge defects on J55 steel for

Cited by 1Publish Year 2019Author Bosi Li, Hangyu Zhu, Zhengliang Xue, Zhengfeng Qin, Jian Sun 7 minsAIP Advances Vol 9, No 8

Noise analysis and active noise control strategy of transcranial magnetic stimulation device. Analysis of inner fold and bulge defects on J55 steel for Analysis of inner fold and bulge defects on J55 steel for oil casing pipe. Bosi Li, Hangyu Zhu, Analysis of inner fold and bulge defects on J55 steel for Observation of lower defect density brought by excess PbI 2 in CH 3 NH 3 PbI 3 solar cells.Cited by 2Publish Year 2019Author J. D. McHardy, E. J. Albright, S. D. Ramsey, J. H. SchmidtPROTECTION OF OIL CASING TUBE STEEL VIA SURFACE Analysis of inner fold and bulge defects on J55 steel for oil casing pipe Bosi Li, Hangyu Zhu, Zhengliang Xue, Zhengfeng Qin and Jian Sun 1 Aug 2019 AIP Advances, Vol. 9, No. 8

Cited by 5Publish Year 2013Author Jiaojuan Zou, Naiming Lin, Lin Qin, Bin Tang, Faqin XieAn Overview of Forging Processes with Their Defects

Forging defects those are repeatedly occurring are discussed along with their causes and remedies. Then the fish-bone diagram is used to explore the possible causes of defects like unfilling, mismatch and scale pits through a brainstorming session and to determine the Direct digitalized phase compari between signals with Analysis of inner fold and bulge defects on J55 steel for Aug 19, 2019Analysis of inner fold and bulge defects on J55 steel for oil casing pipe. Bosi Li, Hangyu Zhu, Zhengliang Xue, Zhengfeng Qin and Jian Sun. Analysis of inner fold and bulge defects on J55 steel for By experiments and analysis, it was shown that no-interval frequency measurement can be converted into the phase difference measurement and the frequency stability evaluated as the Allan deviation Analysis of inner fold and bulge defects on J55 steel for

Effect of Process Parameters on Coefficient of Friction in Analysis of inner fold and bulge defects on J55 steel for

Oct 29, 2020F test is used to determine the p -value. In the analysis, the effects of S1, S2, S0, and pi by coefficient of friction interaction are assessed. Superciliously, the generally chosen a-level of 0.05 was selected, and the results indicate the p -value for the interaction term (0.675 and 0.127) is 6 minsGroup-invariant solutions for one dimensional, inviscid Analysis of inner fold and bulge defects on J55 steel for Aug 19, 2019Analysis of inner fold and bulge defects on J55 steel for oil casing pipe. Bosi Li, Hangyu Zhu, Zhengliang Xue, Zhengfeng Qin and Jian Sun. Analysis of inner fold and bulge defects on J55 steel for In the analysis section of this paper we outline intrinsic structures, known as symmetries, present in the system of non-linear, first-order partial differential equations governing one-dimensional Analysis of inner fold and bulge defects on J55 steel for

Experimental Investigation of Ultraic Vibration Analysis of inner fold and bulge defects on J55 steel for

This research study focuses on the experimental analysis of the three-dimensional (3D) surface topography and surface roughness of the workpiece machined with ultraic vibration assisted turning (UAT) in compari to conventional turning (CT). For the challenge that machining difficulties of 304 austenitic stainless steel (ASS 304) and high demands for the machined surface quality and Analysis of inner fold and bulge defects on J55 steel for Experimental investigations into the effects of SPIF Analysis of inner fold and bulge defects on J55 steel for Jan 10, 2017Many researchers have addressed their research investigation for the process commercialization. Hussain et al. used an empirical modeling technique to minimize the forming defect like squeezed out wall, corner fold, and bulge. They demonstrated that the formation of a defect significantly lowers the sheet formability.

Flow forming process of thin-walled tubular parts with Analysis of inner fold and bulge defects on J55 steel for

Jan 01, 20183. Results and discussion The FEM simulation results of flow forming process of thin-walled tubular part with cross inner ribs are shown in Fig. 3. As the width and depth of the longitudinal and transverse rib grooves are small, the size of meshing has an important impact on the filling of cross inner ribs during the FEM simulation.People also search formedical vial seal corrosionduke cancer center raleighsterile glass vials produce procedurefoil vial sealssterile vial sealsA multi-step assembly process drawing, flanging and Analysis of inner fold and bulge defects on J55 steel for A E220BH steel sheet of 0.69 mm thickness was studied. The samples are characterized by a curved surface radius S sh (convex) or S st (concave) and a hemming edge radius E sh (Fig.3). Radii S sh or S st are obtained by sample pre-strain before the anging operation, due to the biaxial bulge

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Study on size effect affected progressive microforming of Analysis of inner fold and bulge defects on J55 steel for

Oct 01, 2019The defects in Feature C are mainly the tail bulge, burr, and slope induced by the first and the third operations, as illustrated in Fig. 16. The shape of the cylindrical hole feature is attributed to multifactors including material flow, interfacial friction between workpiece and tooling, and work hardening in shearing process.The pharmaceutical vial capping process Container closure Analysis of inner fold and bulge defects on J55 steel for Feb 01, 2016The contact of the spinning rollers during the capping process is carried out simultaneously from three directions, which results in a symmetric folding of the aluminum skirt around the vial neck (Fig. 5A and B). Moreover, the folding of the aluminum skirt under the vial flange displays an elegant appearance.

US6551333B2 - Method for attaching hernia mesh - Google Analysis of inner fold and bulge defects on J55 steel for

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) 2000-10-19 Filing date 2001-12-10 Publication date 2003-04-22 2000-10-19 Priority to US09/692,636 priority Critical patent/US6425900B1/enUS6733036B2 - Automotive electronic safety network Analysis of inner fold and bulge defects on J55 steel for Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) 1995-06-07 Filing date 2001-08-08 Publication date 2004-05-11 1995-06-07 Priority to US08/476,077 priority Critical patent/US5809437A/en

US8272243B2 - Hemming working method and Analysis of inner fold and bulge defects on J55 steel for - Google

US8272243B2 US12/096,109 US9610906A US8272243B2 US 8272243 B2 US8272243 B2 US 8272243B2 US 9610906 A US9610906 A US 9610906A US 8272243 B2 US8272243 B2 US 8272243B2 Authority US United States Prior art keywords hemming roller flange working work Prior art date 2005-12-05 Legal status (The legal status is an assumption and is not a legal conclusion.US8657873B2 - System for improving cardiac function Analysis of inner fold and bulge defects on J55 steel for A system for improving cardiac function is provided. A foldable and expandable frame having at least one anchoring formation is attached to an elongate manipulator and placed in a catheter tube while folded. The tube is inserted into a left ventricle of a heart where the frame is ejected from the tube and expands in the left ventricle.

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