Classification Of Tensile Testing Machines

1、 According to the degree of automation, it can be divided into
1. Pointer type tensile testing machine: This traditional tensile testing machine has been basically eliminated by digital display tensile testing machine due to its low testing accuracy and low cost performance. However, in the range of small forces, our common tension meters are often used by factories for simple force testing of small products. Because of their low price, they are still popular.
2. Digital display tensile testing machine is also called microcomputer tensile testing machine: the test data is directly displayed on the LCD screen, and the test items are relatively fixed, which is often used for factory quality control.
3. Computer system tensile testing machine: it is the most common tensile testing machine. Because the test data is collected by computer, and then calculated and processed by software program to obtain the final data that users want, and can be printed out by report form. It is often used in scientific research institutions, testing institutions, new product development, etc.
2、 According to the control system, it can be divided into
1. Variable frequency system tension tester: the variable frequency motor control system is adopted, and the tension and compression speed is controlled by the variable frequency governor.
2. Servo system tension testing machine: the servo motor control system is adopted to control the tension, compression speed and displacement more accurately. The servo motor system is a servo control system, which adopts intelligent feedback operation and can be used for constant speed test, cycle test, programming test, etc.
3. Tensile testing machine of other driving modes: controlled by DC motor, the tensile testing machine of this driving mode has been phased out due to its low cost performance.
3、 It can be divided into
1. Metal tensile testing machine: metal materials have high tensile strength and low elongation, and need to be equipped with a metal punctuation extensometer.
2. Rubber tensile testing machine: the elongation of rubber or elastomer is relatively large, and it is necessary to attach a large mark extension device. At the same time, the fixture design should take into account the characteristics of the rubber and should not slip. It can be equipped with O-ring clamps and clamps for tire industry.
3. Plastic tensile testing machine: the tensile strength of plastic is larger than that of rubber, and the elongation is larger or smaller, and the three-point bending test is often tested.
4. Textile tensile testing machine: the textile industry needs to test fabric peeling, puncture, tear, single yarn tension and other tests, and the fixture and software are relatively special.
5. Paper tensile testing machine: the paper needs to test tensile strength, ring compression strength, vertical compression, flat compression, edge compression, peeling strength, etc. There are many fixtures.
6. Leather tensile testing machine: leather needs to test tensile strength, tear strength, etc., and the test items are relatively simple.
4、 According to the test material, it is divided into metal material fixture and non-metallic material fixture;
5、 According to test temperature: normal temperature fixture, high temperature fixture, low temperature fixture, high and low temperature fixture;
6、 It is divided into tensile fixture, compression fixture, bending fixture, shearing fixture, stripping fixture, tearing fixture, sealing fixture, bending and bending fixture according to its purpose;
7、 According to the degree of automation: manual fixture, pneumatic fixture, electric fixture, hydraulic fixture