Precautions and zeroing methods for hydraulic universal testing machines

Hydraulic universal testing machine is a hydraulic material testing machine that can perform various tests such as tensile, compression, and bending. The hydraulic universal testing machine is used for tensile, compression, bending and shear tests of various metals and non-metallic materials, as well as special tests of some products. Do you know about the hydraulic universal testing machine? Let’s talk about the precautions and zeroing methods of the hydraulic universal testing machine. Let’s take a look.

1. Things to note about hydraulic universal testing machine

1. Please close the oil supply valve in time. The oil supply valve in time should be closed after shutting down before starting the machine. Loading, unloading and oil return must be carried out slowly to prevent impact.

2. After the hydraulic universal testing machine sample is tightened, the fixture position cannot be adjusted again

3. During use, the loading of attention value and the movement of beams should not exceed the maximum range.

4. After turning on the machine, you can press the emergency stop switch to turn off the test machine.

2. Zero adjustment method of hydraulic universal testing machine

1. Turn on the test equipment, computer, and control software

2. For the hydraulic universal testing machine, select the appropriate range according to the sample, adjust the oil supply valve to raise the cylinder piston, and repeat it several times. When the piston is rising and does not bear pressure, observe whether the test force value of the computer is zero at this time. If it is not zero, click the hardware adjustment button to adjust the zero point.

3. When the zero point is too large, adjust the zero point first, and then clear the software in each gear.

4. When the oil cylinder has not risen, the test force shows a negative value, which is a normal phenomenon. Please do not adjust the zero point.

5. For the adjustment of zero point, it should be performed after the extensometer is clamped on the sample and the test piston is in a stationary state.

6. Generally speaking, the speed regulator has adjusted the zero point of the sensor. Each time the start, the system will automatically calibrate the starting zero point without user adjustment.

7. Users can use the hardware zero button to adjust the hardware zero point, and the system will automatically record the new zero point adjustment value.

8. No metering measurements are not adjusted.

Mechanical equipment is essentially the same. Only by mastering the correct method can the entire experimental process be smoother and the experimental data are more accurate. The above is an introduction to the precautions and zeroing methods of hydraulic universal testing machines. I hope it can help you.