The type of testing machine is various, and it has different testing machines for different materials. The testing machine for rubber materials is called: rubber universal material tensile testing machine.
Then, how should customers choose when choosing a rubber universal material tensile testing machine? What kind of rubber universal material tensile testing machine can meet the requirements of measuring rubber tensile properties? Then the following Shanghai Yuhong monitoring and control will answer this question and everyone!
The first to operate according to their own criteria, determine what data needs:
1. The maximum force (tensile strength) that occurs when the specimen is stretched until it breaks;
2. The force value (fracture strength) at which the specimen breaks;
3. The corresponding force value at the yield point (tensile stress at the yield point);
4. The force value of the specimen when it is stretched to a given elongation (determined elongation stress);
5. The elongation of the specimen when it is stretched to a given stress (fixed stress elongation);
6. Elongation at yield point (elongation at yield point);
7. The elongation at break of the sample (elongation at break).
second. According to the requirements of the measured parameters, select the appropriate rubber universal material tensile testing machine , the rubber universal material tensile testing machine used to test the tensile properties of rubber meets the following conditions:
1. The test trip can not be too small
Due to the large amount of deformation of the rubber during stretching, especially for latex products, the elongation may be as high as 1000% or more. Therefore, before the rubber specimen breaks, it must be ensured that the specimen has enough stroke.
2. High measurement accuracy, but also recording device
The rubber pull-off does not require much force, so the test force of the tensile tester is not required to be large, but the measurement accuracy is very demanding, and the general accuracy is 0.01N. In addition, since the tensile properties of the test rubber require several tensile values ​​during the drawing process, and the tensile test is not repeatable, the accurate and timely recording of the tensile force value of each test section plays an important role in the success or failure of the test. A rubber tension tester equipped with a high-accuracy load cell can accurately record real-time tensile values ​​and process them through computer programs to meet the requirements of rubber tensile tests.
3. To have enough accuracy of gauge measurement
The measurement of the gauge length of the specimen is an important data for calculating the rubber elongation. Therefore, the rubber tensile tester in the rubber tensile test must accurately measure the strain amount of the specimen and record it immediately.
4. Tensile testing machine equipped with a device that can accurately describe the stress-strain curve
There is a close relationship between the tension value and the gauge length in a tensile test specimen. For example, the specimen's constant stress needs to measure the force at which the specimen is stretched to a given elongation, and the constant stress needs to measure the specimen. Stretch the gauge length to a given stress. After the test is completed, the accurate stress-strain curve can reproduce the test process, and clearly reflect the value of each test section, to facilitate the calculation of the project required by the test.
The Shanghai gifted Hong measurement and control remind you: the purchase of the testing machine, testing machine itself because it is a precision instrument, high precision, so early can not just look at price, quality and value and should be followed by after-sales service. In order to ensure the accuracy of the test results and the stability of the equipment operation, it is better to choose the equipment with good quality.
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