Hardness testing calibration
Hardness testing calibration is the regular checking and adjusting of hardness testing machines with certified plates to ensure measurement accuracy and traceability. This prevents incorrect results and potential risks in the welding process.
Physical-chemical mechanism of action
Hardness testing calibration ensures that hardness measurements are performed correctly. This is done by comparing with certified plates whose hardness is known. The machine is adjusted so that its readings match the reference values.
Metallurgical relevance & risks in welding
Incorrect calibration can lead to inaccurate hardness levels, which poses risks in the welding process. Too low hardness can cause cracks and failure of components, while too high hardness can contaminate or damage the material. This can affect the service life and safety of components.
Workshop practice & action instructions
Calibration should be done at least monthly. Use certified hardness reference plates whose hardness is known. Adjust the machine so that its readings match the reference values. If there are deviations, check the calibration again and adjust the settings. Document all calibrations and comparisons thoroughly.