How to calculate welding consumption
Diagrams for a quick estimation of the consumption of welding consumables for welding ferritic steel, butt joints and fillet joints.
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.
How cold cracks occur and how they can be prevented: Cold cracks can occur in both butt welds and fillet welds; however, this article will focus on those occurring in fillet welds.
If you are MIG welding, it is well worth considering the use of a metal-cored wire (MCW) rather than a solid wire or standard flux cored wire to reduce the risk of weld defects.
Weld defects can occur in the best of workshops and invariably lead to higher costs due to re-work and downtime. One typical defect we have seen examples of recently is incomplete fusion.
We have seen several instances of cold cracking in welds when visiting customers. The standard of welding work and adherence to correct procedure was not an issue, so the question was why it occurred and what can be done to avoid a repetition.