ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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That part of an automatic orbital weld sequence during which the welding current is gradually reduced prior to extinguishing of the welding arc. The downslope portion of a welded joint is seen as a tapering of the end of the weld bead with a reduction of penetration from the beginning to the end of the downslope so that the final weld bead is small with minimal penetration.

Publication Source: American Society of Mechanical Engineers (ASME), Bioprocessing Equipment (BPE) - 2009 Revision

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