Qualification test of welders - Fusion welding - Part 6: Cast irons

This document outlines the specific requirements for the qualification testing of welders performing fusion welding processes on cast iron materials. It serves as a technical specification within the broader framework of welding personnel qualification, focusing exclusively on the unique metallurgical characteristics and procedural controls necessary when joining cast iron components. The content defines the applicable welding techniques, pre-heating procedures, post-weld heat treatment protocols, and the criteria for evaluating the mechanical and structural integrity of welds produced on this specific class of materials. It details the examination methods, including visual inspection, non-destructive testing, and destructive testing procedures, which are essential for verifying the competence of the welder. By adhering to these guidelines, organizations can ensure that personnel demonstrate the necessary skills to produce sound welds that meet the rigorous safety and performance standards required for cast iron applications in industrial settings. The scope covers the qualification tests and the continuous assessment of welders to maintain their certified status for working with this challenging material.