How to troubleshoot some failures of the Brinell hardness tester in use?

Although the Brinell hardness tester is a measuring device with a simple structure, convenient operation, and high accuracy in metal appraisal work, once its long-term improper operation is very easy to cause inaccuracy in the hardness of the test, it will have a great impact on the quality of the product. It even produces major undesirable consequences.

Here is the content list:

●How to solve the problem of inaccurate determination of Brinell hardness tester?

●How to solve the instability of the Brinell hardness tester?

●How to solve the problem that the Brinell hardness tester does not work, but there is electric current sound?

How to solve the problem of inaccurate determination of Brinell hardness tester?

The reasons for this failure and the troubleshooting methods: (1) The Brinell hardness tester is not installed horizontally, and the Brinell hardness tester should be adjusted to a level; (2) The surface of the steel ball is not smooth or the diameter exceeds the allowable tolerance, and a micrometer should be used to select qualified Replace the steel ball; (3) The error of the indentation measuring device is too large, and the allowable error of the indentation measuring device should be adjusted to ≤±0.5%; (4) The weight cannot be placed vertically, after the weight and the Brinell hardness tester, when the cover is rubbed against, check whether the lifting ring is hung on the key blade and whether the hanger boom is straight. Otherwise, the lifting ring shall be hung on the key blade to straighten the hanger boom.

How to solve the instability of the Brinell hardness testing machine?

The reasons for this failure of the Brinell hardness tester and the troubleshooting methods: (1) The force point blade is loose, and the force point blade should be adjusted and tightened; (2) The force point blade and fulcrum wear of the Brinell hardness tester will increase the load error to varying degrees; (3) The position of the adjustment block on the load lever is improper, and it can be moved forward or backward according to the situation, adjusted properly, and fixed tightly; (4) The compression spring is corroded, which increases the contact with the pressure shaft and spindle bushing for friction, clean the rusty part of the Brinell hardness tester and apply protective oil or replace it. (5) The loading is not stable, and there is impact and vibration. The factors that cause the unevenness should be eliminated.

How to solve the problem that the Brinell hardness tester does not work, but there is electric current sound?

This failure of the Brinell hardness tester is caused by the lack of phase in the motor. Check whether the power supply of the Brinell hardness tester is normal, whether the power plug is properly inserted, whether the cable is disconnected, whether the power switch is intact, whether the motor wiring is securely connected, and whether the motor is burnt out and whether the contacts of the reversing switch are in good contact, etc., should be excluded separately according to their conditions.

EBPU ELECTROMECHANICAL EQUIPMENT (ZHEJIANG) CO., LTD has a professional team in the development and production of Brinell hardness testers. The team is composed of a group of engineers with more than ten years of experience in R&D, promotion, and sales in the field of material testing. We will work harder and down-to-earth with better products and services to give back to our customers!