How it Works

Experts from the welding industry answer your questions and explain 'how it works'.

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What is the 'Heat Affected Zone' in welding and which types of Welding Processes produce less HAZ?

The heat-affected zone (HAZ) is that area of metal that has not been melted and has undergone changes in properties as a result of being exposed to relatively high temperatures during welding.

What considerations should be made when selecting welding helmet lens shade?

Modern welding helmets and googles are designed to protect the user’s eyes and face from a number of welding and related hazards.  A welder-fitter may use one helmet to perform grinding, plasma-arc cutting, GTAW (TIG) on thin materials, GMAW (MIG) on thick plate, and air carbon arc-gouging (CAC-A).

The information provided is intended for general interest, to educate and inform our audience. The CWB and those providing feedback to the questions do not take any responsibility for any omissions or misstatements that could lead to incorrect applications or possible solutions that industry may be facing.