This device requires several welding test plates
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One piece of equipment has cylinder sections with thicknesses of 18 and 28 mm; both use the same material, Q345R, and are in the same condition (normalized). The thickness of the head is 32 mm. The equipment requires post-weld heat treatment. 1. Discuss which cylinder sections need to have welding test plates installed How many sets of welding test plates are needed? Why? 2. Is it necessary to include a base metal heat treatment test plate?
If the design drawings of this equipment or relevant standards require the preparation of product welding specimens, then for tube sections of different thicknesses, as long as the same welding procedure qualification is used, only one set of welding specimens needs to be prepared. If the head has weld seams, a set of product welding specimens must be prepared; as for the base metal heat treatment specimens, these are something that needs to be taken into account during the hot forming of the head.