Range of Approval for Welding Procedure
The range of application of a welding procedure specification includes the specific parameters such as plate thickness, diameter, and material group for which the specification is valid.
Physicochemical Mechanism of Action
The range of application of a welding procedure specification refers to the specific conditions and parameters under which the welding process is to be performed. These parameters include plate thickness, the diameter of the part to be welded, and the base material group.
Metallurgical Relevance & Risks in Welding
If the actual parameters fall outside the range of application, undesirable effects can occur. For example, too thin a plate can lead to insufficient stability of the welding process and cause cracks. Too thick a plate or the wrong material, on the other hand, can lead to inadequate fusion or excessive stress buildup.
Workshop Practice & Action Instructions
Before applying a welding procedure specification, the actual parameters of the part must be precisely determined and compared with the information in the specification. If there are deviations, either the specification must be adjusted or a new range of application determined. This can be done through additional procedure qualifications or by selecting another welding procedure specification.