Base Material Certification
Base material certification checks its chemical composition and mechanical properties according to technical delivery conditions. This ensures quality and suitability for the welding process.
Physico-chemical mechanism of action
Base material certification involves determining its chemical composition through analyses such as X-ray fluorescence analysis (XRF) and its mechanical properties through measurements like hardness or tensile tests. These data confirm that the metal meets the specified specifications.
Metallurgical relevance & risks in welding
Wrong chemical compositions can lead to porosity and reduced mechanical properties. Mechanical properties outside the allowed range can lead to cracks or inadequate toughness in the weld. A faulty certification can therefore have direct effects on the safety and service life of the weld.
Workshop practice & action instructions
To carry out a base material certification, the following steps must be taken:
1. Chemical analysis: Use X-ray fluorescence analysis (XRF) or other suitable methods to determine the chemical composition.
2. Mechanical properties: Measure hardness and tensile strength according to the specified standards (e.g., Brinell hardness).
3. Documentation: Record all results and compare them with the technical delivery conditions.
4. Issue certificate: Create a certificate confirming that the requirements are met.