1、 Installation of tensile testing machine

The testing machine should be installed in a clean, dry and uniform temperature house. At the same time, the possibility of long beam bending test on the machine and the possibility of using mirror extensometer should be considered. Therefore, enough spare area should be left around the testing machine.

When installing the main body of the testing machine and the dynamometer, there is no need for special foundation. Just make the general foundation according to the foundation drawing and reserve the anchor screw hole for pouring.

2、 Operating procedures of tensile testing machine

1. Turn on the main switch.

2. According to the sample, select the measuring range, hang or remove the swing thallium on the swing rod, adjust the handle of the buffer valve, and align the marking line.

3. According to the shape and size of the sample, put the corresponding chuck into the upper and lower jaw seat.

4. Roll and press the recording paper (checkerboard) on the roller of the plotter. This can only be done when necessary.

5. Start the oil pump motor, turn on the oil delivery valve to make the test bench rise 10 mm, and then close the oil valve. If the test bench is in the rising position, it is not necessary to turn on the oil pump to deliver oil first, just close the oil delivery valve.

6. Clamp one end of the sample in the upper jaw.

7. Start the oil pump to adjust the pointer to the zero point of the dial.

8. Start the lower jaw motor, lift the lower jaw to a proper height, clamp the other end of the sample in the lower jaw, and make the sample vertical.

9. Put down the drawing pen on the push rod to enter the drawing preparation state (only when drawing is needed).

10. According to the loading speed required by the test, slowly open the oil delivery valve for loading test.

11. When the sample is broken, close the oil valve and stop the oil pump motor.

12. Record the required values and describe them.

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

14. Remove the fractured specimen.

15. Compression and bending tests can be carried out according to the above items.