Welding process Introduction

Welding process Introduction

SAW technology

Similar to MIG/MAG welding, SAW involves the formation of an arc between a continuously fed wire electrode. Covering flux is used to generate protective gas and slag protecting the weld metal. The flux can also help donate alloying elements. It is dedicated mainly for flat and fillet welding. This process is generally used for the welding of materials as carbon steel and stainless steel.

The benefits are:

  • High deposition rates
  • High penetration
  • Large execution speeds obtained by the use of high currents on one or more electrode-wires
  • Excellent compact joints with good mechanical properties
  • High duty cycle
  • Operator comfort: low fumes and invisible arc

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PLASMA technology

The contribution of energy necessary for welding is ensured by an electric arc in an atmosphere of plasmagene neutral gas. The arc
established between an infusible electrode and the parts to be assembled is forced through a nozzle which constricts it mechanically and
pneumatically. This welding process is used for welding of carbon steel, stainless steel, duplex, titanium, Inconel, nickel and alloys…

The benefits are:

  • Reduction in the preparation times for assemblies by eliminating bevelling for thicknesses up to 10 mm
  • Joint quality: Complete and regular penetration guaranteed, 100% X- ray quality
  • Reduction of the heat a affected zone thanks to the arc concentration
  • Respect of the base material chemical composition
  • Low distortion

  • Reduction or elimination of  finishing operations

  • Excellent visual aspect

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TIG technology

Metals are fused together by heating them with an electric arc. The electric arc is established between a non consumable (does not melt) tungsten electrode and the workpiece. A filler metal may be used depending on the joint design. The molten metal is shielded from the atmosphere by a stream of inert gas supplied through the torch. The resulting deposited weld metal has the same integrity as the base material. This welding process is used for welding of carbon steel, stainless steel, aluminium, titanium, copper…

The benefits are:

  • Good weld bead appearance
  • Adapted for  fine thickness
  • Aluminium weldability
  • Welding in all positions

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TOPTIG technology

Based on principle of TIG process, an additional filler metal is fed through the nozzle directly into the arc with an angle of 20° to the electrode. This concept guarantees a high deposition rate and an efficient metal transfer. This welding process is used for welding of carbon steel, stainless steel, titanium, inconel, electro galvanized coated steel (brazing)…

The benefits are:

  • TIG high quality welding and guaranteed spatter free
  • Good global productivity
  • Excellent appearance of the weld bead
  • Torch accessibility and welding in all positions

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MIG/MAG technology

An electric arc forms between a consumable wire electrode and the workpiece (metal) which heats the workpiece metal causing them to fuse. The arc and weld pool are shielded by an inert or active gas. Metal is transferred in the form of drops through the arc towards the workpiece. This welding process is used for welding of carbon steel, stainless steel, aluminium, copper…

The benefits are:

  • Easy implementation
  • High welding speed
  • Welding in all positions
  • Low welding investment cost

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