Problems that the compressive strength testing machine may encounter

The compressive testing machine is used to test the performance of materials, products, etc. under pressure. During the testing process, the following problems may be encountered:

Issues related to equipment hardware

Sensor failure

Problem manifestation: The sensor is a key component for measuring force in the pressure testing machine. Zero drift may occur, that is, when no pressure is applied, the sensor output is not zero, resulting in deviations in the test data. Or the sensitivity decreases, making the measured force value inaccurate and unable to truly reflect the pressure resistance capacity of the object being measured.

Cause analysis: After long-term use, the elastic elements inside the sensor may experience fatigue and deformation, affecting its performance. The circuit part of the sensor may also malfunction due to reasons such as moisture and aging.

Solution: Regularly calibrate the sensor and perform calibration operations using standard weights and other tools; If the sensor is damaged, a high-precision sensor of the same specification needs to be replaced in time.

Problems with the transmission system

Problem manifestation: Wear may occur in the transmission system such as lead screws and guide rails, causing jamming during the loading process, resulting in uneven applied pressure and affecting the accuracy of the test results. Or the transmission accuracy decreases, resulting in the actual applied pressure being inconsistent with the set pressure.

Cause analysis: Long-term and high-frequency use can lead to wear due to friction between transmission components. Insufficient lubrication will also accelerate wear and affect transmission accuracy. In addition, dust and impurities entering the transmission system will also accelerate wear and affect the transmission effect.

Solution: Regularly lubricate and maintain the transmission system, and use the appropriate lubricant as required by the equipment manual. Clean the dust and impurities in the transmission system in time; For severely worn components, they should be replaced in a timely manner.

Fixture problem

Problem manifestation: The fixture is loose. During the testing process, the sample may slide out of the fixture, causing the test to fail to proceed normally and even possibly damaging the equipment. Uneven clamping force of the fixture will cause uneven force on the sample, and the test results cannot truly reflect the compressive performance of the sample.

Cause analysis: The fastening screws of the fixture are loose. The clamping surface of the fixture is worn or deformed, resulting in uneven clamping force.

Solution: Regularly check the tightness of the fixture and promptly tighten any loose screws. For the worn or deformed clamping surfaces of the fixture, repair or replacement should be carried out. Select the appropriate fixture to ensure that it can firmly and evenly hold the sample.

Power supply and electrical system failure

Problem manifestation: The equipment suddenly loses power, which may be due to reasons such as aging power lines, short circuits or blown fuses. There is a malfunction in the electrical control part, such as damage to the electronic components on the control board, which causes the equipment to fail to start normally or operate unstably.

Cause analysis: Long-term use of power lines may lead to aging and damage, which can easily cause problems such as short circuits. The electronic components on the control board may be damaged in environments such as high temperature and humidity.

Solution: Regularly inspect the power lines and replace the aged or damaged ones in a timely manner; Check if the fuse has blown. If it has blown, replace it with a fuse of the appropriate specification in time. For control board faults, professional technicians are required to conduct detection and repair, and replace damaged electronic components when necessary.