What are the common failures of the universal testing machine?

The universal testing machine is suitable for electronic and electrical,machinery manufacturing, metal materials, and products, wire and cable rubber and plastic, paper and color printing and packaging, adhesive tape, bags and handbags, textile and fiber, food, pharmaceutical, and other industries, can test a variety of materials and finished products, semi-finished products, such as pulling, pressing, bending, shearing and other physical properties, the purchase of a variety of different fixtures can do tensile, compressive, holding, holding pressure bending resistance, tearing, shearing and other tests. In the actual operation of the universal testing machine, it is normal to encounter equipment failures, common failures are the following.

Here is the content list:

• Test interruption

• The material being tested is pulled off

• Jittering

• Inaccurate measurement data or large measurement values

Test interruption

Failure analysis: when the press increases the load test, the tension cannot be raised, cannot continue to test.

Analysis of the reasons: the oil pump does not discharge oil and oil supply pump is not enough or oil pipe joints in the larger load there is more serious oil leakage, another possibility is that the kinematic viscosity is too low.

Solution: Before using the universal testing machine to check the oil tank to see if there is enough oil and oil pipe joints are stable.

The material being tested is pulled off

Failure Analysis: When the material to be measured is not within the specified distance of the universal testing machine caused by pulling off.

Analysis of the reasons: the measured material geometry style is not standardized, the universal testing machine itself concentricity is not good, the measured material clamping parts have broken technology damage.

Solution: Universal testing machine in the use of good inspection work before the root cause of the problem can be eliminated.

Jittering

Failure analysis: In the operation of the universal testing machine will emerge from the jittering situation.

Analysis of the reasons: universal testing machine hydraulic system has not excluded air, force measurement piston screw bent or not in a reasonable position, the force transfer machine system friction is not uniform.

Solution: Regular maintenance of the universal testing machine, testing, to ensure that it can work properly.

Inaccurate measurement data or large measurement values

At the beginning of the test is not zeroed operation, if not zeroed on the start of work, so that the measured results are certainly inaccurate. Universal testing machine used for some time, the strain occurred in the elastic yielding and did not return, although this should be deformed very small. It is usually necessary to recalibrate the force transducer coefficients and correct its data once a year. The specimen is not clamped correctly during the test, which can also cause inaccurate test results at this time. During the test, the speed of the test is not standard, too fast or too slow will result in inconsistent measurement results. The force sensor can also be damaged when it is hit by external forces or when it is used more than its capacity.

A universal testing machine set tensile, bending, compression, shear, ring stiffness, and other functions in one material testing machine, mainly for metal, non-metallic material mechanical properties test, is the ideal testing equipment for industrial and mining enterprises, scientific research units, universities and colleges, engineering quality supervision stations and other departments. If you would like more information, please contact Nanjing T-Bota Scietech Instruments & Equipment Co.