When a DC welding process is specified.what must be included on the WPS? Tack welding is not allowed Only 26010 electrodes can be used The polarity required must also be given. The precise model of the welding machine is also provided square

When a DC welding process is specified, the Welding Procedure Specification (WPS) must include the polarity required. The WPS is a document that outlines the specific welding process and parameters to be used for a particular welding task. It provides detailed information about the welding process, including the type of welding, the materials to be welded, the welding parameters, and any special requirements or considerations.<br /><br />In the case of a DC welding process, the polarity required must be specified in the WPS. This is because the polarity of the welding current can affect the quality and characteristics of the weld. The polarity required may vary depending on the specific welding application and the materials being welded.<br /><br />The other options provided in the question are not necessarily required to be included in the WPS for a DC welding process. Tack welding is a type of welding used to temporarily hold parts together before the final welding is done, and it may or may not be allowed depending on the specific welding application. The use of only 16010 electrodes may be a requirement for a specific welding application, but it is not a general requirement for all DC welding processes. The precise model of the welding machine may be useful information, but it is not a requirement for the WPS.<br /><br />Therefore, the correct answer is that the polarity required must also be given in the WPS when a DC welding process is specified.