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 trained personnel who are fully familiar with the equipment and its correct usage. 2. Improper loading speed and holding time can significantly affect the test results. If the load is applied too quickly or the holding time is too short, the measured hardness may be higher than the actual value. Conversely, if the loading is too slow or the holding time is extended, the result may appear lower than it should be. To ensure accurate readings, the loading process should be smooth and consistent, with a controlled rate and a stable holding time throughout the test. Proper training and attention to these details are crucial for reliable and repeatable hardness measurements.

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