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Vskills Certified Tig Welder Table of Content

Table of Content


Tig Welding process and equipment

  • Introduction to TIG Welding
  • TIG welding equipment
  • Gas regulator, flow meter

Advantages and Disadvantages of TIG welding process

  • Advantage of TIG Welding
  • Disadvantages of TIG Welding
  • Advantage of TIG welding process

GTAW Safety

  • Electrical current
  • Welding environment safety rules

Power sources of TIG welding – types, applications – care and maintenance

  • Power sources for GTAW
  • Type machine
  • Types of sources
  • Alternating current transformers
  • Alternating current transformers/direct current rectifiers

High frequency unit and DC suppressor unit

  • High frequency unit (HF unit)
  • Care and maintenance of HF unit
  • DC suppressor
  • Care and maintenance of DC suppressor

Properties and uses of argon and helium gas – ceramic shield

  • Shield gases
  • Inter gases
  • Properties of argon and helium gas
  • Gases for TIG welding of aluminium Argon gas
  • Low arc voltage
  • Arc stability
  • Low gas overhead welding
  • Automatic welding
  • Welding dissimilar metals
  • Helium
  • High arc voltage
  • Small heat affected zone
  • Automatic welding
  • Aluminium bronze
  • Cobalt base alloys
  • Cupro-Nickel
  • Deoxidised copper
  • Inconel
  • Low carbon steel
  • Magnesium alloys
  • Maraging steels
  • Monel
  • Gas lens

Tungsten electrodes – types – uses

  • Tungsten electrodes
  • Electrodes of four different types are used
  • Tungsten with 1-2% of thorium oxide
  • Tungsten with 0.3 – 0.5% zirconium
  • For edge welds
  • For edge welds
  • Current density
  • Electrode condition

Types of polarity and its application

  • DC power sources
  • AC power sources

Aluminum Welding by TIG process

  • Base metals and filler alloys
  • Preheating aluminium
  • Welding of fillet joint
  • Advantages of argon arc welding
  • Limitation of argon arc welding
  • Base materials
  • Wrought material identification
  • Heat Treatable
  • Join preparation for welding aluminium
  • Pre-weld cleaning
  • Chemical cleaning
  • Mechanical Cleaning
  • Welding of stainless steel by TIG process
  • Welding techniques Melt in mode
  • Post weld heat treatment (PWHT)
  • Fillet lap joint on stainless steel
  • Square butt joint on stainless steel sheet
  • Butt joining of stainless steel sheets
  • Square butt joint on stainless steel tubes

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