tensile testing machine how to classify
First, according to the level of automation can be divided into
1.Pointer
tensile testing machine: this traditional tensile testing machine has been largely eliminated by the digital display tensile testing machine due to its low test accuracy and low cost. But in the small power range, is our common rally, often used in small factories simple power test products, because of its low price, or quite popular.
2. Digital display type tensile testing machine also called microcomputer type tensile testing machine: the test data is directly displayed on the LCD screen, the test items are relatively fixed, commonly used in the factory quality control.
3. Computer system tensile testing machine: is the most common tensile testing machine, since the test data collected by the computer, and then through the calculation and processing of the software program to obtain the final data the user wants and can be printed out by way of the report. Commonly used in scientific research units, testing organizations, new product development.
Second, according to the control system can be divided into
1.Frequency conversion system tensile testing machine: the use of frequency conversion motor control system, stretching, compression speed through the inverter control.
2.Tension testing machine: servo motor control system, stretching, compression speed and displacement control more accurate. Servo motor system for the servo control system, using intelligent feedback type operation, can be constant speed test, cycle test, programming test.
3. Other ways to drive the tensile testing machine: controlled by a DC motor, the
tensile testing machine has been phased out due to its low cost.
Third, according to the industry and functional characteristics can be divided into
1.Metal tensile testing machine: metal material tensile strength, elongation is small, need to configure the metal punctuation extensometer.
2.Rubber tensile testing machine: rubber or elastomer elongation is relatively large, need to be accompanied by a large punctuation elongation device, while the fixture design to consider the characteristics of the rubber, can not slip.Can be equipped with O-ring clamp, tire industry fixture.
3.Plastic tensile testing machine: plastic tensile strength than rubber, elongation of some small, and often to test three-point bending test.
4.Textile tensile testing machine: the textile industry needs to test the fabric peeling, puncture, tear, yarn stretching, and other tests, fixtures and software are more special.
5.Paper
tensile testing machine: the paper needs to test the tensile strength, ring crush strength, vertical pressure, flat pressure, side pressure, peel strength, etc., more fixtures.
6.Leather testing machine: leather need to test the tensile strength, tear strength, etc., the test item is relatively simple.
