The difference between electronic tensile machine and hydraulic tensile testing machine

Tensile material testing machines are divided into electronic tensile testing machines and hydraulic tensile testing machines; both electronic tensile testing machines and hydraulic tensile testing machines are materials mechanics testing instruments, but have their own characteristics in terms of structural design, performance, and application scope.

The user can decide whether to use an electronic tensile testing machine or a hydraulic tensile testing machine according to the specific use environment of the industry. Generally, how to purchase tensile material testing machines effectively is a necessary course that every purchaser must clearly understand.

The scope of application：

Electronic tensile testing machine is widely used in various metal, non-metal and composite materials, such as wood, plastic profiles, wires and cables, paper, film, rubber, medicine, food packaging materials, fabrics, etc. for tensile performance index testing. At the same time, 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 tensile testing machine is suitable for users who only seek relevant data such as force value, tensile strength, and compressive strength. If more complex parameters are required, a microcomputer-controlled electronic tensile testing machine is a better choice.

Terms of performance：

The electronic tensile testing machine does not use oil source, so it is cleaner and more convenient to use and maintain; its test speed range can be adjusted, the test speed can reach 500mm, the test stroke can be determined according to needs, and it is more flexible; the force measurement accuracy is high, some It can even be achieved; it is small in size, light in weight, large in space, and convenient to add corresponding devices to do various material mechanics tests, truly achieving multiple functions in one machine. At present, the floor-standing digital tensile testing machines produced by domestic mainstream testing machine manufacturers can perform closed-loop control such as load control, strain control, displacement, and speed control.

The hydraulic tensile testing machine is limited by the flow rate of the oil source, and the test speed is low. The manual hydraulic tensile testing machine is easy to operate and inexpensive, but the control accuracy is low; the electro-hydraulic servo tensile testing machine, compared to the performance gate-type digital display electronic tensile testing machine, is not inferior to the control accuracy except for the low speed; The microcomputer-controlled electro-hydraulic servo tensile 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.

The electronic tensile testing machine mainly uses a servo motor as a power source, and a lead screw and a nut as an executive component 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; in the force measurement, the electronic tensile testing machine uses load sensors.

Structural characteristics：

The hydraulic tensile testing machine mainly uses high-pressure hydraulic pressure as the power source, and uses manual valves, servo valves or proportional valves as control components for control. Ordinary hydraulic tensile testing machines can only be manually loaded manually, which is an open-loop control system and is affected by price factors.

Force sensors generally use hydraulic pressure sensors, while electro-hydraulic servo tensile testing machines use servo valves or proportional valves as control components for control. Some domestic manufacturers have also adopted high-precision load sensors for force measurement.

Cost performance：

The following electronic tensile testing machines have more advantages. Hydraulic tensile testing machine is mainly used for tensile, compression, bending and other mechanical performance tests of metal and non-metal materials and parts, components, and components. Hydraulic tensile testing machine is an ideal testing equipment for industrial and mining enterprises, construction materials, quality inspection centers, water conservancy and hydropower, bridge engineering, scientific research institutes, and mechanics laboratories of colleges and universities. The manually controlled hydraulic tensile testing machine is cheap and suitable for finished product inspection and material index testing of industrial and mining enterprises; while the electro-hydraulic servo tensile testing machine is suitable for testing laboratories, scientific research institutions and colleges with higher requirements for steel and building materials. school. Compared with the electronic tensile testing machine, the above electro-hydraulic servo tensile testing machine has obvious price advantages.

Hongtuo Instrument is a powerful supplier of physical property testing instruments, specializing in providing high-quality, high-performance material testing instrument solutions for small and medium-sized enterprises. The company's main products include: tensile testing machine, melt flow rate meter (melt index meter), cantilever beam impact testing machine, simply supported beam impact testing machine, density meter and other types of engineering plastic testing instruments.