This Technical Note gives recommendations for the control of HAZ hardness and the prevention of cold cracking. With the rapid cooling of the welds the likelihood of cold cracking is high.
Various sections detail:
â€¢ a procedure for determining preheat requirements that ensure avoidance of cold cracking.
â€¢ a general procedure to find the welding energy input with calculation (run size, current, voltage) or by using Nomographs where a calculator is not available.
â€¢ chemical compositions of Australian, American, British & Shipping structural steels.
The information may be used in designing welding procedures that avoid the requirements of preheating.
For the field of pipe welding This Technical Note details the maximum pipe wall not requiring preheat.
The data provided are applicable to manual metal arc welding (MMAW), gas metal arc welding (GMAW), flux cored arc welding (FCAW), gas tungsten arc welding (GTAW) and submerged arc welding (SAW).
Available for purchase at:Â www.wtia.com.au/catalog.htm .
ISBN: 1 920761 30 6
Current edition: 2006
Previous edition(s): 1982, 1994, 1996