NDSS Academy

Welder Trade Theory - Year 1 (ITI)

Welding safety, gas welding and cutting, shielded metal arc welding, MIG/MAG, TIG and plasma cutting, welding positions, joints, electrodes, distortion, weld defects, inspection and testing.

12 MonthsDuration 7Chapters35Topics
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Syllabus · पाठ्यक्रम

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01Unit 1: Welding Safety and Basic Workshop Practice 5 topics
  1. Personal protective equipment and filter glass shades
  2. Fire, fume and electric shock hazards
  3. Safe handling and storage of gas cylinders
  4. Marking, cutting and edge preparation tools
  5. Classification of welding processes
02Unit 2: Gas Welding and Gas Cutting 6 topics
  1. Oxy-acetylene equipment: cylinders, regulators, hoses, blowpipe
  2. Types of flames and their uses
  3. Filler rods and fluxes
  4. Leftward and rightward techniques
  5. Oxy-fuel gas cutting principle and practice
  6. Backfire and flashback
03Unit 3: Shielded Metal Arc Welding (SMAW) 5 topics
  1. Arc welding power sources: transformer, rectifier, inverter
  2. AC and DC, straight and reverse polarity
  3. Electrodes: coating, functions, classification and storage
  4. Selection of current and arc length
  5. Heat input and arc blow
04Unit 4: MIG/MAG, TIG and Plasma Arc Cutting 5 topics
  1. GMAW (MIG/MAG) equipment, shielding gases and metal transfer modes
  2. GTAW (TIG) equipment, tungsten electrodes and polarity
  3. Welding of stainless steel and aluminium
  4. Plasma arc cutting principle and equipment
  5. Flux cored arc welding (introduction)
05Unit 5: Welding Joints, Positions and Symbols 4 topics
  1. Butt, lap, T, corner and edge joints
  2. Edge preparation and joint terminology
  3. Welding positions: 1G-6G and 1F-4F
  4. Welding symbols and their placement (IS 813)
06Unit 6: Distortion and Weld Defects 5 topics
  1. Expansion, contraction and residual stress
  2. Types of distortion and control methods
  3. Weld defects: porosity, slag inclusion, undercut, overlap, lack of fusion, cracks
  4. Causes and remedies of defects
  5. Pre-heating and post-weld heat treatment
07Unit 7: Inspection and Testing of Welds 5 topics
  1. Visual inspection and weld gauges
  2. Dye penetrant and magnetic particle testing
  3. Ultrasonic and radiographic testing (introduction)
  4. Destructive tests: bend, tensile, nick-break, macro etch
  5. Welder qualification basics

About

You will be able to

  • Follow safety rules for gas and arc welding, cylinders and fumes
  • Explain gas welding and cutting equipment, flames, filler rods and techniques
  • Select power source, polarity, electrode and current for shielded metal arc welding
  • Explain MIG/MAG, TIG and plasma arc processes and their consumables
  • Identify welding joints, positions and symbols
  • Explain causes and control of distortion and weld defects, and methods of inspection and testing

Who it is for

  • ITI Welder trainees (NCVT / DGT CTS, Welder - Year 1)
  • Trainees preparing for the Welder trade theory paper of the AITT and welder qualification tests

What you need

  • Class 8 / 10 pass as per ITI admission rules

Questions

Which syllabus does this course follow?

The NCVT / DGT CTS (NSQF) Welder Trade Theory syllabus. The centre follows the student's own ITI syllabus where it differs.

Is this course only theory?

Yes, this is the trade theory paper; the matching Welder Trade Practical course covers hands-on welding.

Are TIG and MIG covered?

Yes, MIG/MAG, TIG and plasma cutting are part of the current syllabus.

Does it help in getting a welder job?

Yes, it builds the theory needed for AITT, apprenticeship and welder qualification tests.

Download the syllabus (PDF)

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