What is the use of tensile machines in industry?
The tensile machine is widely used in experiments for finding the relationship between material force and deformation. It can perform mechanical experiments and analysis on tensile, compression and bending of metal and non-metal raw material processing parts and finished products.
First, according to the degree of automation can be divided into
1. Digital display tensile testing machine is also called microcomputer type tensile testing machine: the test data is directly displayed on the LCD screen. The test items are relatively fixed and are often used for quality control in the factory.
2, computer system tensile testing machine: is the most common tensile testing machine, because the test data is collected by the computer, and then through the calculation of the software program to get the final data the user wants, and can be printed out through the report. Commonly used in scientific research units, testing institutions, new product development, etc.
Second, according to the control system can be divided into
1. Frequency conversion system tensile testing machine: adopts variable frequency motor control system, the stretching and compression speed are controlled by frequency converter.
2. Servo system tensile testing machine: servo motor control system is adopted, and the stretching, compression speed and displacement control are more accurate. The servo motor system is a servo control system, which adopts intelligent feedback type calculation, and can be fixed speed test, cycle test, program test and so on.
3. Other driving method Tensile testing machine: Through the DC motor control, the tensile testing machine of this driving mode has been gradually eliminated due to low cost performance.
Third, according to industry and functional characteristics can be divided into
1. Metal tensile testing machine: Metal material has high tensile strength and small elongation, and metal puncture extensometer is required.
2. Rubber tensile testing machine: The elongation of rubber or elastomer is relatively large, and a large punctuation elongation device is required. At the same time, the fixture design should consider the characteristics suitable for rubber and cannot slip. O-ring fixtures, tire industry fixtures, etc. can be added.
3. Plastic tensile testing machine: The tensile strength of plastic is larger than that of rubber, the elongation is large and small, and the three-point bending test is often tested.
4. Textile tensile testing machine: The textile industry needs to test fabric fabric peeling, puncture, tearing, single yarn stretching and other tests, fixtures and software are special.
5. Paper tensile testing machine: Paper needs to test tensile strength, ring pressure strength, vertical pressure, flat pressure, side pressure, peel strength, etc., more fixtures.
6. Leather tensile testing machine: leather needs to test tensile strength, tear strength, etc., the test items are relatively simple.
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