温州附近想过夜电话联系

Pengrui instruments, focus Tensile testing machine
 Tensile testing machine
 phone
Current position: home page > Industry News > Electronic tensile testing machine
Product catalog
Private service controlled tensile testing machine
Universal testing machine
Single column tensile testing machine
Double column tensile testing machine
Horizontal tensile testing machine
Door type tensile testing machine
Electronic tensile testing machine
High and low temperature tensile testing machine
 I buy logo of instrument network
hot-sale product
Performance analysis of polyurethane emulsion by universal material testing machine
Some skills for prolonging the service life of plastic tensile testing machine
Solution to pointer instability of electronic universal testing machine
Selection of tensile testing machine
Solution of displacement system fault of tensile testing machine
Usage of universal testing machine
Several important factors determining the performance and accuracy of electronic universal testing machine
Operation procedures for various testing instruments of tensile testing machine
Technical articles

Price and quality of electronic tensile testing machine should be treated dialectically

Source: Tensile testing machine July 26, 2018 Keywords: Tensile testing machine Price quality    

    Electronic tensile testing machine It is a high-precision, high-tech material testing equipment, it can be used to do tensile, compression, bending, shearing, peeling and other mechanical properties of metal and non-metallic materials. The reason why it has become the main equipment of material detection is that it has the advantages of easy operation and high precision.
But if we buy the electronic tensile testing machine with poor quality because of the price, it may lead to inaccurate test data. If the test fails because of the unskilled human operation, its use value will be greatly reduced. Here are five important factors that affect the performance, accuracy, life and price of the electronic tensile testing machine
  Factor 1: the force value sensor of electronic tensile testing machine, because the quality of the sensor determines the accuracy and force stability of the electronic tensile testing machine. At present, some electronic tensile testing machines on the market use sensors. The small force value generally uses S-type sensor, the strong value generally uses the spoke type sensor, and the sensor interior is generally resistance strain gauge. If the accuracy of the strain gauge is not high or the strain gauge is fixed The accuracy and service life of the sensor will be affected by the poor aging resistance of the adhesive used for the constant strain gauge or the poor material of the sensor.
Factor 2: the ball screw, which drives the sensor movement, because if there is a gap between the screw rods, the test data in the future will directly affect the maximum deformation and elongation after fracture. At present, some electronic tensile testing machine screw rod is T-shaped ordinary screw rod on the market. In this way, the gap is relatively large, and the friction force is relatively large, and the service life is short.
Factor 3: transmission system of electronic tensile testing machine. At present, some electronic tensile testing machines are driven by reducer and some are driven by ordinary belt. The main disadvantages of these two transmission modes are: the former needs to be lubricated regularly, while the latter cannot guarantee the synchronization of transmission, which affects the test results. Constant temperature and humidity testing machine is according to the time range set by the user
Factor 4: the power source (motor) of electronic tensile testing machine is also called motor. At present, some electronic tensile testing machines on the market use ordinary three-phase motor or frequency conversion motor. This kind of motor adopts analog signal control, which has slow control response and inaccurate positioning. Generally, the speed range is narrow, and there is no low speed when there is low speed, and the speed control is not accurate.
Factor 5: the measurement and control system (i.e. software and hardware) of the electronic tensile testing machine. At present, the measurement and control system of some electronic tensile testing machines on the market is controlled by 8-bit single-chip microcomputer, with low sampling rate and poor anti-interference ability. In addition, if the number of bits of ad converter is low, then the measurement will not be accurate.
Conclusion: the above five factors are the main reasons for the great discount of its test results and performance. I hope you can choose the regular manufacturer carefully when purchasing the electronic tensile testing machine.
The test procedure of electronic tensile testing machine is attached
1. Generally, the test should be carried out at room temperature of 10-35 ℃. In case of special requirements, the test temperature shall be 23 ± 5 ℃.
2. Clamp the wire rope sample on the electronic tensile testing machine, and make the sample axis coincide with the chuck axis.
3. When the applied test force is not more than 80% of the tensile force required for the minimum fracture of the wire rope, the test force can be applied quickly, and then it should be applied slowly. The applied stress rate is about 10N / mmm2. S.
4. During the test, the pointer should move smoothly and the measured breaking force of the wire rope sample should be observed. According to the agreement of both parties, additional items such as breaking force, breaking characteristics and elongation can also be measured. The error between the calculation and the standard weight weight should not exceed the speed test of plusmn052 electronic tensile testing machine A. first, record the initial position of the cross arm of the machine, select the speed value on the control panel, and measure the cross arm stroke with the standard straight steel ruler. B. at the same time, the starting time of the electronic stopwatch is 1 Z min. 5. If the sample is broken within 50 mm from the collet, the actually measured breaking tension should meet the relevant standards If the test is successful, it will be invalid.
The fracture tensile test of steel wire rope is one of the most widely used tensile tests. Carefully read the above provisions on samples and the specific test procedures to ensure correct operation.

 

Home page of tensile testing machine | Tensile testing machine | Industry information
Main business: Electronic tensile testing machine Horizontal tensile test Metal tensile testing machine Rubber tensile testing machine Spring tension testing machine All kinds of tensile testing machine
Tensile testing machine Pengrui instrument
Pengrui instrument( anastasia-duck.com )Copyright jinicp no.08002309