Classification of tensile testing machine
1. According to the shape: single-arm tensile testing machine (small measured force), gantry tensile testing machine (large measured force)
2. Pulling power source points: electronic tensile testing machine (large stroke, wide test speed range, suitable for testing with force value below 200KN)
3.Hydraulic tensile testing machine (small stroke, low test speed, suitable for testing above 200KN)
3.Hydraulic tensile testing machine (small stroke, low test speed, suitable for testing above 200KN)
4. According to the degree of automation :: electronic explicit tensile testing machine and microcomputer controlled tensile testing machine
5.According to control accuracy: frequency conversion control tensile testing machine, DC servo control tensile testing machine, AC servo tensile testing machine (adopting 6. Closed-loop control mode, high accuracy, low running speed, wide test items, suitable for metal pulling Extension test)
Second, the purchase factors of tensile testing machine
1. Range of force value (when the tension machine is selected, the force value should be selected between 10% and 90% of full scale)
1. Range of force value (when the tension machine is selected, the force value should be selected between 10% and 90% of full scale)
2. Test stroke: the maximum stroke when the product is to be destroyed
3. Test width: the size of the product affects the test width, that is, the size of the space between the two pillars of the gantry
4. The material of the test product: different materials can choose different tensile testing machines according to the price
5. Fixtures required for testing products (different shapes of products require different fixture testing)
Third, the purchase of tensile testing machine
1. Look at the force value of the tested product, choose a single-arm tensile testing machine below 500KG, choose a gantry tensile testing machine above 500KG, and choose a hydraulic material testing machine above 20000KG
2. Look at the test itinerary, and choose the electronic tensile testing machine for the itinerary
3. Look at the test speed: the hydraulic universal material testing machine is generally not selected for speeds above 250mm / min
4. Look at the test material: metal material testing generally uses servo tensile testing machine, which has high test accuracy, and plastic materials can use frequency conversion control tensile testing machine, which guarantees accuracy and low price
5. Look at the test accuracy: the servo control tensile testing machine has high test accuracy
See additional functions: if you want to measure the elongation, you need to install a two-point extensometer, if you do not need to measure the elongation, you can use the full displacement calculation (standard configuration)
Jiangdu Kaiyuan Experimental Machinery Factory
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