Instructions for use of artificial board universal testing machine

Jinan Hengsi Shanda Operation Instructions:

1. Turn the main switch on the power supply.

2. According to the sample, select the measurement range, hang or remove the swing thallium on the swing rod and adjust the buffer valve handle to align the standard line. 3. Install the corresponding chuck into the upper and lower jaw seats according to the shape and size of the sample.

4. On the drum of the depictor, roll the recording paper (graph paper), which is only done when necessary.

5. Turn on the oil pump motor, unscrew the oil feed valve to make the test stand raise paper 10 mm, and then close the oil valve. If the test stand is already in the raised position, there is no need to turn on the oil pump first, just close the oil feed valve.

6. Clip one end of the sample into the upper jaw.

7. Turn on the oil pump adjustment point to the zero point of the accuracy dial.

8. Turn on the lower jaw motor, lift and lower the lower jaw to an appropriate height, clamp the other end of the sample into the lower jaw, and be careful to make the sample perpendicular.

9. Put down the drawing pen on the push rod and enter the drawing ready state (it is only done when the drawing is required).

10. Slowly unscrew the oil feed valve according to the loading speed required by the test.

11. Close the oil valve after the sample is broken and stop the oil pump motor.

12. Record the required values ​​and will be depicted.

13. Open the oil return valve and turn the passive needle back to zero after unloading.

14. Remove the broken sample.

15. The above tests can be carried out in accordance with the above items.

Jinan Hengsi Shanda Artificial BoardUniversal testing machineOperation steps:

(1) Check whether the valves on the oil circuit are in the closed position; replace the chuck that matches the specimen; the cut-off should be effective.

(2) Select the velocity measurement dial according to the required load and install the corresponding heavy hammer. Some test machines are equipped with adjustable buffers and need to be adjusted accordingly. The function of the buffer is to ensure that the pendulum slowly falls back during unloading or when the test piece breaks.

(3) Install the automatic drawing device pen and paper, etc.

(4) Turn on the oil pump motor to check whether the operation is normal. Then open the oil supply valve to slowly transfer oil into the working oil cylinder. When the movable table rises by about 20mm, close the oil supply valve to a small adjustment balance weight 20 so that the swing rod 21 is in the plumb position and then rotate the horizontal tooth rod to target the force measuring pointer and the driven pointer at the right zero point. At this time, the oil pressure in the working oil cylinder is balanced with the weight of components such as the horizontal head on the movable column workbench. During the experiment, this part of the weight should not be included in the load on the test piece. During loading, the force measuring pointer drives the driven pointer to rotate together; when unloading or the test piece breaks, the force measuring pointer quickly retreats, and the driven pointer stays still to show the load value during unloading or breaking.

(5) Install the specimen. The compressed specimen must be placed on the pad plate. The specimen must be aligned in the center. When installing the stretched specimen, it must be clamped in the upper chuck first. Use electric or hand to adjust the position of the lower chuck to fit the length of the specimen before clamping the lower end of the specimen. However, after the specimen is clamped, the lower chuck cannot be adjusted.

(6) After the test piece is installed, adjust the pen tip of the automatic plotter and start the oil pump motor. Open the oil supply valve and load it slowly.

(7) Close the oil supply valve after the experiment and stop immediately. Then remove the test piece (sometimes you need to remove the test piece after unloading the oil, such as non-break experiments). Slowly open the oil return valve and drain the oil back to the oil tank to return the movable table to the original position and restore all mechanisms. Clean the experimental machine tools and the site.