Dissertation > Excellent graduate degree dissertation topics show

Study on Forming Laws of Cross Wedge Rolling Asymmetric Shaft Parts Based on Parity Wedge

Author: LiZhan
Tutor: ShuXueDao;PengWenFei
School: Ningbo University
Course: Mechanical Manufacturing and Automation
Keywords: Cross wedge rolling Asymmetric rolling on Parity Wedge Forming mechanism wnbalance axial force
CLC: TG335
Type: Master's thesis
Year: 2012
Downloads: 2
Quote: 0
Read: Download Dissertation

Abstract


Because of the advantages of good strength,high efficiency and high material utilization,Crosswedge rolling forms the shaft widely range of applications.However,it doesn’t work well when Therolled larger length asymmetric shaft of the cross wedge rolling(CWR), due to the limited length ofthe mold mandrel, which can not be formed by symmetric rolling in the existing CWR device.Sothe technologies of CWR single-rolling asymmetric shaft has important theoretical significanceand application value.The paper research on the key technologies of asymmetric rolling by using the finiteelement simulation methods, main works that studying on forming laws of cross wedge rollingasymmetric shaft parts based on parity wedge had been done in this article,The main contents areas following:(1) By using the professional FE software DEFORM-3D, the forming process of the crosswedge rolling asymmetric shaft had been numerically simulated, the internal stress field, strainfield, rolling material flow and other information in the rolled part were gained, the differencebetween asymmetric rolling and symmetrical rolling deformation was clarified.(2) Forming metal-plastic, the temperature and the flow stress of the material.the flow patternis actually the interaction.the temperature changes caused by the thermal effect, in turn, impact thedeformation behavior of the deformation body. Order to be able to simulate metal formingprocesses, it should take into account.only coupled thermos-mechanical FEM simulation of crosswedge rolling asymmetric shafts part based on parity wedge.(3) Cross wedge rolling asymmetric shaft parts based on parity wedge forming process, thevariation of the heart of the stress and strain.the influence of the various parameters impact thestress and strain.(4)Cross wedge rolling asymmetric shaft parts based on parity wedge, some groups of axialforce were extracted, and the axial force equation was regressed. The primary and secondary effectof process parameters and their interactions on the axial force was analyzed.In this paper, the forming mechanism of asymmetric rolling based on parity wedge are studied,which provides foundation for high efficience,high material and accurate production of formingasymmetric shaft.

Related Dissertations

  1. Research on Cross Wedge Rolling of Revolving Parts,TG335
  2. Study on the Water-Rock Coupled Model of the Karst Collapse in Taian Area,P641.134
  3. Research on Mechanism of Oil and Gas of Bell Depression,P618.13
  4. Research on the Volcanic Rock Reservoir Characteristics of Carboniferous Kalagang Formation in Malang Sag,P618.13
  5. Precision Forming Process and Die Design for Water Pump Plier Based on CWR,TS914.51
  6. Study on the formation mechanism of basic metals futures prices,F224
  7. Cluster formation mechanism of e-commerce services and development countermeasures Exploratory Research,F724.6
  8. The Research on Distribution Characteristics and Forming Mechanisms of Idle Land,F293.2
  9. Study on the Evolution of Microstructure of Non-Quenched and Tempered Steel Shafts in the Course of Cooling after Three Rool Cross-Wedge Rooling,TG335.19
  10. Numerical Simulation and Experiment Study on Selective Laser Melting of Metal Powders,TF124.3
  11. Experimental Study on Extruding Pellet for Crop Straw,S816.8
  12. Study on the Structure, Performance and Forming Mechanism of Iron-base Surface Composite by Cast-singtering Technique,TB331
  13. Contemporary global change on urban floods formation mechanism and risk management research,P426.616
  14. Study of Reservoir Character for Lower Paleozoic Buried-hill in ZhuangXi-ChengDao District, Jiyang Sag,P618.130.2
  15. The Study of Urban Land Increment in the Process of Urbanization,F293.2
  16. On the information technology environment, the generation mechanism of enterprise knowledge network mode,F270.7
  17. Study on the formation mechanism of transmission and distribution tariffs,F426.61
  18. Forming of Enterprises’ Standardization Competitiveness Based on Lean Thinking,F272
  19. Formation and conversion mechanisms of corporate core competencies,F272
  20. Study of Theory on Shaping Curve of Right-Angle Step of Trio Cross Wedge Rolling,TG335.19
  21. Preparation of New Regenerated Protein Fiber and Analysis on Its Properties,TS102

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling process
© 2012 www.DissertationTopic.Net  Mobile