Common knowledge of hydraulic universal testing machine operation

Hydraulic universal testing machineThe main structure can be divided into two parts: (hydraulic) loading system and measurement system. The loading system transmits force to the load sensor fixed under the test bench through the cylinder piston, and converts the force signal into an electrical signal to transmit it to the measurement system. The data is processed and analyzed through the measurement system to obtain the test results.

Hydraulic universal testing machine is mainly the structure can be divided into two parts:(hydraulic) loading system and the measuring system. Loading system to load sensor force to the fixed under test by a piston, the force by the load sensor signals into electric signals transmitted to the measuring system. By measuring system for processing, analysis of data,so that the test results.

The dial pointer of the hydraulic universal testing machine has poor sensitivity, and it stops in the middle after unloading, or the zero point position often changes. The causes of this phenomenon are multifaceted. The pulleys and tracks on the toothed rods are too dusty and rusted. At this time, you need to remove and clean it, and add a little watch oil. The pointer rotation shaft is dirty and should be cleaned. If there is contact between the tooth rod tablet and the tooth rod, it should be loosened. If the buffer oil return condition is poor, it should be adjusted or cleaned. The belt on the force-testing piston is off or too loose (makes the piston not run at a constant speed). When the friction force of the force-testing piston increases or gets stuck in the oil cylinder, use chromium oxide grinding paste to grind until it is normal. There are obstacles during the lifting process, or the pendulum shaft is too dirty or rusted, causing the pointer to return to zero and change greatly.

Dial pointer sensitivity of hydroulic universal testing machine, unloading after the stop, orzero locations often change. Reasons for this phenomenon are in many aspects. Pulley gearrod and track too much dust, rust. Remove the washed clean, add a little oil for watch and clock. The pointer shake dirty, should be cleaned. A contact between the gear lever cover andgear lever, should loosen. Buffer oil return the situation is bad, Should be adjusted or cleaning. The force on the pinton belt off or loose (the pinton can not uniform speed). Force measuring piston in the oil cylinder friction increases or stick phenomenon, application of chromium oxide grinding paste on the research, until the normal. The pendulum in the raiseprocess has obstacles, or just too dirty or corroded, the pointer back to zero changes.

Tensile test is an important experiment in the mechanical properties of materials. The equipment used in traditional tensile experiments is generally hydraulic universal testing machines. With the wide application of electrical testing and electronic control technology in testing machines, the microcomputer-controlled electronic universal testing machine and the microcomputer-controlled hydraulic servo universal testing machine have been successively developed on the market. The microcomputer-controlled hydraulic universal testing machine still uses hydraulic oil as the power source. The difference from the old hydraulic universal testing machine is that it uses a technology that combines hydraulic loading and microcomputer system to collect data, process and display the tests using computers, so that the test machine functions are more complete, operation is more convenient, and data is more accurate. In addition, compared with microcomputer hydraulic servo universal testing machine and microcomputer electronic universal testing machine, its advantages are strong power and wide loading range.

The tensile test is an important test of mechanical properties of materials. The traditional tensile test of the equipment are generally hydroulic universal testing machine. With the wide application of electronic technology in electric measurement test machine, the market has developed a microcomputer control electronic universal testing machine and computer control hydroulic servo universal testing machine. Microcomputer control hydroulic universal testing machine still adopts the hydroulic oil as power source, the difference with the oldhydraulic universal testing machine is using the hydroulic loading and microcomputer system combines the technology, data acquisition, data processing and graphics to the test by computer, so that the testing machine function is more perfect, more convenient operation,more accurate data. In addition, comparison of micro hydroulic servo universal testing machine and micro electronic universal testing machine, its biggest advantage is the stronger power, wide range of loading.

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