How it Works

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

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A project may assume that welding procedure specification (WPS) reviews will be addressed by others, later. Not establishing which WPSs should be reviewed, how they should be reviewed, and who should review them inevitably introduces the project risks of inappropriate or incorrect use of WPSs, wasted resources, or both. This fact sheet summarizes the challenges and solutions of reviewing WPSs.

What causes weld metal solidification cracking and how to avoid it?

Weld solidification cracking, sometimes referred to as hot cracking or shrinkage cracking, is cracking that occurs as the weld is solidifying. The reason for solidification cracking is that the amount of liquid metal in the weld pool is insufficient to fill the gaps created as the weld metal shrinks during solidification.

What causes weld hot and cold cracking and how to avoid it?

The phenomenon of cold cracking has been a source of confusion and frustration in many industries when welding carbon steels. The main issue is that this type of cracking, often called hydrogen cracking or delayed cracking, because it often does not occur until days afterwards.

What are the considerations for choosing Welding Materials for Strength and Efficiency

Welding materials are defined as any materials used for making or protecting a weld such as filler metals (coated electrodes, rods, solid wires, tubular wires), fluxes, shielding gases and consumable inserts. Welding materials selection is one of the most important steps of the weld design.


Why are Higher Carbon Steels More Difficult to Weld?

Why are higher carbon steels more difficult to weld? In the first instance, we know that as the carbon content of a steel increases then so does the tensile strength.

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.

How-It Works content is submitted by Industry experts to the CWB Association and does not necessarily reflect the views of the CWB Group. When testing for CWB Certification or CWB Education, please refer to CWB Education textbooks or CSA standards as the official source of information.