What is the difference between electronic universal material testing machine and hydraulic universal material testing machine
Although the electronic universal material testing machine and the hydraulic universal material testing machine are both "universal material testing machines", they are different. www.lyxyantech.com Speaking of this, many people will say, aren’t they all called universal material testing machines, aren’t they all the same? So today I will explain the difference between the two for you.
1. The difference of power source:
1. Electronic universal material testing machine
Servo motor is used as the power source, and the lead screw and nut are used as the executive parts to realize the speed control of the moving beam of the testing machine. In the transmission control, there are currently two main forms, synchronous belt and reducer. Domestically, the testing machine manufacturers in Changchun area mostly use timing belts, while the testing machine manufacturers from Hongshan mostly use reducers. Regarding its advantages and disadvantages, it remains to be discussed, but they do not affect the user's use. In the force measurement, the electronic universal testing machine adopts load sensors. www.lyxyantech.com
2. Hydraulic universal material testing machine
Use high-pressure hydraulic source as power source. Use manual valve, servo valve or proportional valve as the control element for control. Ordinary hydraulic universal testing machines can only be manually loaded manually, which is an open-loop control system. Affected by price factors, the force sensor generally uses a hydraulic pressure sensor. The electro-hydraulic servo universal material testing machine uses servo valves or proportional valves as control components for control. Some domestic manufacturers have also adopted high-precision load sensors for force measurement.
2. The difference between oil sources:
1. Electronic universal material testing machine
No oil source is required. Therefore, it is cleaner and more convenient to use and maintain. Its test speed range can be adjusted. The test speed can reach 0.001mm/min-1000mm/min, and the speed ratio can reach 1 million times. The test stroke can be determined according to needs. flexible. The force measurement accuracy is high, some can even reach 0.2%. Small size, light weight, large space, it is convenient to add corresponding devices to do various material mechanics tests. Really achieve multiple functions in one machine. The electronic universal testing machine can achieve the so-called three closed-loop control of load control, strain control and displacement control. www.lyxyantech.com
2. Hydraulic universal testing machine
Limited by the flow rate of the oil source, the test speed is low. Manual hydraulic universal testing machine, the operation is relatively simple, the price is cheap, but the control accuracy is low. The performance of the electro-hydraulic servo universal testing machine is compared with that of the electronic universal testing machine. In addition to the low speed, the control accuracy is not bad. The microcomputer-controlled electro-hydraulic servo universal testing machine with load cell can achieve a force value accuracy of about 0.5%. . And it is more reliable, more stable and more cost-effective when doing large-tonnage material mechanics tests. www.lyxyantech.com
in conclusion:
Electronic universal material testing machine, widely used in various metal, non-metal, composite materials, medicine, food, wood, copper, aluminum, plastic profile, wire and cable, paper, film, rubber, textile, aerospace and other industries For testing of tensile performance indicators, various test data processing software and test aids can be customized according to the domestic and international standards provided by the user. The digital display electronic universal testing machine is suitable for users who only seek relevant data such as tensile strength and compressive strength. If you need to take more complex parameters, the microcomputer-controlled electronic universal testing machine is your better choice. In terms of cost performance, electronic universal testing machines below 30T have more advantages. www.lyxyantech.com