Welding Assistance

TIME is the single biggest cost in welding. This is particularity relevant in NZ as we are increasingly competing on a global basis against manufacturers and fabricators from countries with low labour costs.

Highly skilled welders can still experience weld flaws, particularly when getting used to new equipment, or under pressure to meet deadlines, however, more often than not the issue of weld defects boils down to a lack of skilled staff.

Diagrams for a quick estimation of the consumption of welding consumables for welding ferritic steel, butt joints and fillet joints.

The quality of weldments made by GSMAW is markedly affected by the welding parameters set by a welder or a welding operator.

PWHT relieves residual stresses, remove diffusible hydrogen, and temper hard transformation microstructures of the weld, preventing brittle fractures.

Porosity refers to cavity-type discontinuities or pores formed by gas entrapment during the solidification of molten weld metal.

Hot crack can be defined as cracking formed at high temperatures near the solidus of the metal, where the metal has coherence but is completely brittle.

Hydrogen cracking can occur when welding carbon and low-alloy steels. The potential for hydrogen cracking in the weld metal and HAZ depends on their composition.

What advantages are there in downhill welding and how should it be used, compared with uphill welding in GMAW and FCAW?

The strength of a fillet weld is based, in the design, on the design of the throat thickness and effective weld length.