Hardness Testing Machine
A machine for precise measurement of material hardness through controlled load application and optical indentation measurement. Must be calibrated regularly to ensure measurement accuracy.
Physical-Chemical Mechanism of Action
The hardness testing machine checks the strength of a material by applying a known load and measuring the impression. This is often done by placing a test body in a cylinder with a fixed radius, with the load increased in a controlled manner until the test body flattens.
Metallurgical Relevance & Risks in Welding
Hardness testing is crucial for the quality and safety of weld seams. Too high or too low hardness can lead to cracks, failure, or insufficient toughness. Inaccuracies in measurement can lead to wrong conclusions about material quality.
Workshop Practice & Instructions
The machine must be calibrated regularly to minimize measurement uncertainties. This is done by comparison with standard samples or reference materials. Load application and measurement must be precise to achieve reliable results. When handling, pay attention to correct settings and ensure all components are clean.