Repair Rockwell hardness tester and common troubleshooting methods

First, human error: 1. The operator may lack sufficient technical skills and practical experience, leading to improper handling of the hardness tester. It is essential that operations be supervised or conducted by personnel who are well-trained and familiar with the equipment. 2. Improper loading speed and holding time can significantly affect test results. If the load is applied too quickly or the holding time is too short, the measured hardness may be higher than actual. Conversely, if the loading is too slow or the holding time is extended, the hardness reading might be lower than it should be. During testing, the loading process should be smooth and consistent, ensuring a stable and controlled application of force, along with maintaining an appropriate holding time to achieve accurate and reliable results. Proper training and careful attention to these factors are crucial in minimizing errors and ensuring the validity of the hardness measurements.

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