Dissertation > Excellent graduate degree dissertation topics show

Application of A-TIG Welding in Welding of Pipelines

Author: WangHaiTao
Tutor: ZhangRuiHua
School: Lanzhou University of Technology
Course: Materials Processing Engineering
Keywords: A-TIG Tube Welding Crafts
CLC: TG457.6
Type: Master's thesis
Year: 2009
Downloads: 105
Quote: 0
Read: Download Dissertation

Abstract


A - TIG welding is a new and efficient welding method , in welding thickness less than 12mm low carbon steel and stainless steel , the workpiece without groove and filler wire , we can achieve side welding . This method has a melting deep, small heat affected zone , the weld is narrower , the amount of deformation is small , high efficiency , low cost , saves material and other characteristics . Suzhou China welding pipe welder and Dongfang Boiler Factory production pipe, carbon steel pipe and stainless steel pipe to carry out the study of A-TIG welding process . Welding parameter adjustment theory is based on the stress state of the molten pool penetration increase mechanism and a variety of locations . Carried out a detailed analysis of the relationship between the stress state and the welding current for each position in the pipe , and provides the correspondence relationship of the size of the welding current and the stress state specification regulation provides a basis for pipe welding . Pipe position , horizontal position , the horizontal position welding technology , lead to optimum welding parameters . All-position welding , stress analysis according to the weld pool , the pipe segment from the the different welding starting point for adjusting the parameters of the welding process specifications , and to analyze the results of the weld , draw molding influence change various factors and optimum welding parameters ; welding in the flat position , mainly from the 12 o'clock position welding and 2:00 position welding of the weld shape what different starting point . Consider the effects of welding heat accumulation on the pipe segment , each section are selected different welding current , welding pieces of the results of an analysis of factors affecting the weld , summed up ; welding in the horizontal position , the force due to the molten pool a single state , considering the magnitude of the current and the welding heat accumulation of these two factors . And summarized prone to problems in the welding process was to provide more experience for the future of the welding parameters adjustment . Finally, the appearance to meet the requirements of the weldment weld inspection , including ray flaw detection , detection of mechanical properties , microstructure observation and analysis . On the test results , the indicators are in line with the relevant standards .

Related Dissertations

  1. Research on Welding Characteristics of CO2 Laser-GMA Hybrid Welding for Ultra-Low Carbon Bainitic Steel,TG456.7
  2. Study of Mechanism Using Two-Direction Pre-Stress to Control Welding Distortion and Hot Cracking,TG404
  3. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  4. Study of Microwave Assisted Incineration of Asphalt Flue Gas,X701
  5. Study on the Digestive Tube During the Embryonic Stage of Gushi Chicken,S831
  6. Comparative Study of Internal Intestinal Splinting with Long Nasointestinal Tube Vs. Traditional Ileus Surgery,R656.7
  7. Investigate the Value of CT Reconstruction of Multi-mode After T-tube Cholangiography or ERCP in the Biliary Tract Disease,R657.4
  8. Provincial governing county perspective of provincial and county Relations,D630
  9. Synthesis of t- butyl alcohol using tert-butylbenzene, the catalyst selection and research,TQ241.1
  10. Preparation of polyaniline nanostructures , characterization and biomedical applications,TB383.1
  11. Research on Operational Life Span and Applications of Coated Electrode Resistance Welding for Galvanized Steel,TG453.9
  12. Study on Robot Welding Technique for Double-hull Ship Block,TP242
  13. Organic Hydrogen Phosphite or Hydrogen Phosphate Catalyed Friedel Crafts Amidoalkylation Reaction and Dinuclear Catalysts Applications in Asymmetric Reactions,O643.32
  14. Process Safety Research of Polypropylene Plant,TQ325.14
  15. Research Implementation of Crack Detection Method Based on Its Acoustic Property,TP274
  16. Study on Alloying of 2Cr13 Martensitic Stainless Steel for Oil Country Tube Goods Use,TG142.71
  17. Theoretical Study and Simulation of Hydrocyclone Separator,TH237.5
  18. Aolong Cab Floor Line Application Research of Welding Robots,TP242
  19. Numerical Simulation and Influence Factors of Heat Transfer Cooler,TQ021.3
  20. Study on DSP-based Double-wire Welding Machine and Its Human-machine Interface,TG409
  21. On Design and Application of Neutron Moisture Meter,TH83

CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding process > Welding of a variety of metal materials and components > Pipe welding
© 2012 www.DissertationTopic.Net  Mobile