Process evaluation, process specifications
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Since PQR has been approved, to create the WPS document, is it sufficient to use the pWPS template and simply remove the characters ‘p’ and ‘Yu’? Can the other parts remain unchanged? Should we make slight adjustments to the current and voltage instead? What other things do people usually change? Since the technology is quite mature, PWPS was developed by me; it seems there’s little need to make any changes to WPS as well. :Q
When writing WPS after PQR is approved, it is generally modified based on the pWPS template sheet. It is indeed possible to remove “p” and “pre”, but whether other items need to be adjusted depends on the results of the PQR test and the actual welding conditions. The main parameters that are typically checked and adjusted include current, voltage, welding speed, and heat input, etc., to ensure that the WPS can guide actual welding operations and maintain welding quality. If the process is mature and the pWPS is properly prepared, there may not be many areas that need modification, but each item still needs to be carefully checked to ensure safety and quality. .
In my personal opinion, strictly speaking, it’s not sufficient to simply remove the “p” and “ Pre” elements. As mentioned in the second comment, it’s also necessary to take into account practical factors such as the impact of the joint type. For butt joints, using sheet metal and performing carbon arc gas welding to clean the back side of the joint is required; however, for fillet joints, such cleaning is not necessary. Therefore, the description of this secondary factor in the WPS for fillet joints differs from that in the pWPS； The same is true for other factors, such as the upper and lower limits of the thickness range, as well as the actual welding parameters like voltage, current, and speed, which also differ from pWPS~~~ The above information is provided for reference~~~ The above information is provided for reference~~~