Hits:Updated:2020-10-15【Print】
Electronic universal testing machine is also called universal tensile machine or electronic tensile machine. Independent servo loading system and high-precision wide-band electro-hydraulic servo valve ensure high precision, high efficiency, low noise and fast response; adopt an independent hydraulic clamping system to ensure low noise and stable operation of the system, and the sample is firmly clamped during the test. Does not slip. The universal material testing machine adopts a microcomputer to control a full digital wide-band electro-hydraulic servo valve to drive a precision hydraulic cylinder. The microcomputer control system automatically controls the test force, displacement and deformation in multiple modes to complete the stretching, compression and resistance of the sample. The bending test conforms to the requirements of the national standard GB / T228.1-2010 "Metal material room temperature tensile test method" and other standards.
The main purpose
The electronic universal material testing machine is suitable for the tensile test of rubber, plastic, textile, waterproof material, wire and cable, net rope, metal wire, metal rod, metal plate and other materials, and the additional attachment can be used for compression, bending, ring stiffness test .
Executive Standard
Universal material testing machine complies with GB 8808, GB 13022, GB 1040, GB 4850, GB 7753, GB 7754, GB 453, GB / T 17200, GB / T 16578, GB / T 7122, GB / T 2790, GB / T 2791 , GB / T 2792, ASTM E4, ASTM D828, ASTM D882, ASTM D1938, ASTM D3330, ASTM F88, ASTM F904, ISO 37, JIS P8113, QB / T 2358, QB / T 1130 and other test standards, computer-type universal materials Test machine "GB / T16491-1996 electronic universal testing machine" standard.
Classification
1. According to the classification method, it can be divided into metal material testing machine, rubber and plastic tensile machine, non-metallic material testing machine, dynamic balance testing machine, vibrating table and nondestructive testing machine. Among them, the loading method, structural characteristics, force measurement principle and application range of the material testing machine are all different.
2. According to the loading method, it can be divided into static load tester static and dynamic load tester dynamic.
1) Static testing machine mainly includes: universal testing machine, hydraulic universal testing machine and electronic universal testing machine, pressure testing machine, tensile testing machine, torsion testing machine, creep testing machine.
2) Dynamic testing machines mainly include: fatigue testing machines, dynamic and static universal testing machines, unidirectional pulsating fatigue testing machines, impact testing machines, etc.
3. According to the force measuring method, it can be divided into mechanical force testing machine and electronic force testing machine.
4. According to the control mode, it can be divided into manual control and microcomputer servo control testing machine;
5. Classified according to the position of the oil cylinder, it can be divided into an upper-mounted oil cylinder and a lower-mounted oil cylinder testing machine.
6. According to the test force classification, 5KG.100KG.500KG, 1T 2T.3T, 5T.10 tons, 20 tons, 30 tons, 50 tons, 60 tons, 100 tons, 200 tons, 300 tons, 500 tons, 1000 tons universal Material testing machine.
Development history of electronic universal testing machine
The first electronic universal testing machine in China was developed by Professor Deng Yuemo. The modern Chinese machinery industry that was born in the Opium War has been semi-colonial and semi-feudal from the beginning. The enterprises founded by Chinese national capital have always been under the pressure of imperialism, feudalism, and bureaucratic comprador. The situation is very difficult. Until the first half of the 20th century, China's machinery industry was still extremely backward. The main machinery and equipment were imported, and the design and manufacture of mechanical products were mostly controlled by foreigners. Deng Yuemo started his exploration and struggle in the field of mechanical engineering under such historical conditions.
In 1930, Deng Yuemo was hired as a professor at Beiyang University. The Ministry of Education of Nanjing National Government stipulates that all engineering colleges must establish laboratories. However, the teaching and experiment equipment at that time was almost entirely imported and expensive. For example, a 50,000-pound material testing machine cost more than 15,000 US dollars, and government funding for schools was extremely limited. In order to overcome this difficulty, Deng Yuemo decided to design and manufacture by himself. From 1932 to 1933, Deng Yuemo relied on the Mechanical Research Society, after a series of arduous tests, successfully designed and manufactured a series of instruments and equipment in the material testing laboratory and hydraulic laboratory, such as hydraulic testing machine, impact testing machine, cement Rally machines, velocimeters, Francis pumps, two-stage pumps, turbines, etc., in addition to the materials laboratory and hydraulic laboratory of Beiyang University, are also supplied to Shandong University, Zhongshan University, Henan University, Chongqing University, Jiaozuo Institute of Technology, Henan Water Conservancy Used by relevant laboratories in vocational schools and many other universities across the country. The 50,000-pound material testing machine was the first universal material testing machine designed and manufactured by the Chinese at that time, and could carry out a series of static tests on the mechanical properties of the material.
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