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Rockwell hardness tester use methods and precautions
莱州华银试验仪器有限公司
Release time:
2023/03/02
Digital Rockwell hardness tester only need one-sided contact specimen can test metal hardness,relying on magnetic force Rockwell hardness tester head adsorption on the surface of steel,do not need to support the specimen,can be said to be more convenient.So what do you need to pay attention to when using the digital Rockwell hardness tester?The following small editorial take you to understand.I hope you can help.
Digital Rockwell hardness tester only need one-sided contact specimen can test metal hardness,relying on magnetic force Rockwell hardness tester head adsorption on the surface of steel,do not need to support the specimen,can be said to be more convenient.So what do you need to pay attention to when using the digital Rockwell hardness tester?The following small editorial take you to understand.I hope you can help.
1,digital Rockwell hardness tester in the adjustment after the beginning of the measurement of hardness,the first test point do not use.For fear that the specimen is not good contact with the anvil,the measured value is not accurate enough.Wait for the first point after the test,the hardness tester in the normal operation of the mechanism state and then the specimen for the official test,record the measured hardness value can be.
2,in the replacement or anvil seat,pay attention to the close parts to wipe clean.After the replacement,and then use a certain hardness of the steel sample test several times,until two consecutive times the same hardness value can be obtained.The purpose is to make the press head or anvil seat and the test machine close to the part of the pressure,contact can be good,to avoid affecting the accuracy of the test results.
3,the shape of the more complex specimens to be used in the corresponding shape of the pad,such as fixed after the test can be carried out.The round specimen is generally placed in the V-shaped groove test.
4,before loading need to check whether the loading handle is placed in the unloading position,loading action should be light and stable,can not force too strong.After loading,the loading handle should be placed in the unloading position,to avoid the instrument is in a long-term load state,plastic deformation occurs,affecting the accuracy of the measurement.
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