Before conducting the tensile strength test, it is necessary to conduct a fundamental accuracy check on the universal tensile testing machine. We need to prepare tensile test samples with force values between 60% and 90% of the testing range of the tensile testing machine. Clamp the sample onto the electronic universal tensile testing machine and conduct a tensile strength test on the standard sample using the tensile testing machine according to the standard speed of GB/T228.1-2010.

When the sample exceeds 90% of the additional force of the tensile testing machine, it is necessary to immediately stop the tensile test and let the sample be in a tensile state. Then, an extensometer or strain gauge should be attached to the sample of the electronic universal tensile testing machine, and the sample should be subjected to tensile strength testing according to the standard of GB/T228.1-2010. Calculate the apparent stretching amount using Hooke's law to obtain the tensile value of the test. Compare with the force points on the tensile testing machine. By comparison, the condition and accuracy of the electronic universal tensile testing machine can be known.

The electronic universal tensile testing machine may encounter problems such as wear and tear during long-term use, so as the working time of the tensile testing machine increases, wear and damage will also become more severe. These losses will lead to a decrease in the accuracy of the instrument. Some spare parts accelerate the wear and damage of the electronic universal tensile testing machine due to the harsh working conditions of the equipment. If it can be properly protected during normal work, the function and accuracy of the tensile testing machine will be maintained in good condition. So it is very important to protect the electronic universal tensile testing machine in daily life.

Here are a few points to note when conducting tensile strength tests on electronic universal tensile testing machines:

1. It is not allowed to use materials with different diameters to bend steel bars, especially small diameter materials to bend large diameter steel bars.

2. After each use of the tensile testing machine, the piston does not need to quickly fall to the bottom of the oil cylinder, and can leave a small distance, which is beneficial for the next work.

When the electronic universal tensile testing machine is out of use for a long time, anti rust oil should be applied to the outside and placed in a monotonous environment.

4. Adhere to regular cleaning of the electronic universal tensile testing machine.

5. Personnel who are not familiar with the structure of the tensile testing machine should not be allowed to suspend or disassemble the equipment.

6. The valve on the dynamometer should not be opened and placed to prevent impurities such as dust from falling into the interior and affecting the sensitive function of the tissue.

7. It is necessary to turn off the power before disassembling electrical appliances, otherwise electronic components may be damaged.