Plastic welding or pressure welding

The piece of metal to be joined is heated to plastic state and forced together by external pressure EX – ( Resistance welding )

Fusion Welding or Non-pressure Welding

The material at the joint is heated to a molten state and allowed to solidify EX – ( Gas Welding – Arc Welding )

Equipment

• A Welding generation (D.C) or Transformer (A.C)
• Two cables – one for work and one for electrode
• Electrode holder
• Electrode
• Protective shield
• Gloves
• Wire brush
• Chipping hummer
• Goggles

Fabricate Scope

TCS Approval required before fabrication depend on

• Approval of structural drawing
• Approval of QAP by RDSO
• Approval of erection scheme
• Approval of WPSS by RDSO
• Approval of WPQR by RDSO
• Approval of trial assembly by RDSO

Application

• Manufacturer of automobile bodies
• Aircraft frames
• Railway wagons
• Machine frames
• Structural works tanks, furniture, general repair work