Buttering (a layer deposited to isolate the base metal) requires specific tests under Clause 8 of the standard.
Thus, when you download the PDF, ensure you also have access to ISO 15609-7 for writing the actual procedure. en iso 15614-7 pdf
These are essential variables. Changing them without requalification invalidates the WPS. Buttering (a layer deposited to isolate the base
EN ISO 15614-7:2019 defines requirements for qualifying welding procedures for overlay welding, covering corrosion-resistant, hardfacing, and build-up applications. It ensures that welding procedure tests are conducted for metallic materials, validating specifications used in industries like petrochemical and power generation. For more details, visit BSI Knowledge Base . Changing them without requalification invalidates the WPS
It defines how a preliminary welding procedure specification (pWPS) is qualified through specific tests to ensure the overlay meets chemical and mechanical property requirements.
Especially those in the petrochemical , power generation , and mining industries where equipment faces extreme wear or corrosion.
: Free samples and document outlines are often available on platforms like iTeh Standards developing a pWPS