TT-EH0300 300KN Electro-hydraulic Servo Universal Material Testing Machine

Application of TT-EH0300 300KN Electro-hydraulic Servo Universal Material Testing Machine

It is commonly applied in material analysis in Auto-parts, fastener, Aerospace, cable and wire, plastic and rubber, paper packing industries

It’s a testing equipment which is needed by scientific research institutes, universities, industrial enterprises, technical supervision, inspection and arbitration department.

Technical Specifications of TT-EH0300 300KN Electro-hydraulic Servo Universal Material Testing Machine

Product Structure of TT-EH0300 300KN Electro-hydraulic Servo Universal Material Testing Machine

• Host: Equipped with cylinder – mounted host frame.

The structure reduces the height of the machine making it convenient in transportation, installation and has a stable performance and reliability. The test bed is driven by motor, chain and lead screw drive making the adjustment of tension space and the test operation convenient.

• Test and control system: Combined with electro-hydraulic servo oil source, full digital PC servo controller, electro-hydraulic servo valve, pressure sensor, extensometer for measuring specimen deformation, photoelectric encoder for measuring displacement, PC measurement and control card for testing machine, printer, multi-function test software package, electrical control unit and other parts.

Standard electro-hydraulic servo oil source

• It is designed and manufactured in accordance with standard modular unit with advanced technology for load-adaptive oil inlet throttle speed regulation system – specially used for electro-hydraulic servo universal testing machine.
• Equipped with advanced technical oil pump – motor. Reliable quality and stable performance.
• The load adaptive throttle speed regulating valve which is an in-house developed and produced, has a unique technology. The system pressure is stable, adaptive constant pressure difference flow regulation, no overflow energy consumption and easy to carry out PID closed-loop control.
• Pipe system: Pipelines, joints and seals are made of groups with stable performance to ensure reliable sealing of hydraulic system and no oil leakage failure.

Electrical control cabinet

• Effectively separate the strong current unit from the weak current unit of measurement and control to ensure the measurement and control system from interference and long-term stable work.
• Manual operation button is set on the electric control cabinet, including power switch, emergency stop and start and stop of oil source oil pump, etc.

Full digital PC servo control system

• With PC computer as the main part, the system is fully digital PID regulation, equipped with PC clamping servo amplifier, measurement and control software and data acquisition and processing software, which can realize the closed-loop control of test force, sample deformation, piston displacement and smooth switching of control mode.
• The system consists of three signal conditioning units (test force unit, cylinder piston displacement unit, specimen deformation unit), control signal generator unit, servo valve drive unit, servo oil source control unit, necessary I/O interface, software system and so on.
• System closed-loop control: The measurement sensor (pressure sensor, displacement sensor, deformation extensometer), servo valve, controller (each signal conditioning unit) and servo amplifier together forms a several closed-loop control loops to realize the control functions of the testing force of the testing machine, the displacement of the cylinder piston, and the deformation of the sample. It has many control modes, such as equal rate test force, equal rate oil cylinder displacement, equal rate strain, etc. which can smoothly switch to different control mode.

PC – board servo amplifier for tester

• Has a pluggable PC card board with advanced computer bus control technology including program-controlled analog amplifier, A/D conversion, digital data acquisition channel, digital data I/O, etc.
• The special measurement and control card and PC unit into a single card measurement and control system, can be directly connected with the sensor, measurement and control and data acquisition, and make the complex measurement and control and data acquisition system become simple and reliable.
• Software uses computer bus technology which directs into computer expansion slot, full digital circuit, zero adjustment, gain adjustment and so on. It is the latest product unit of testing and control technology development of testing machine.
• Gain programmable cascade amplifier can get different gain magnification
• The bridge power supply of the sensor shares the same voltage with the reference voltage of A/D chip and the whole measurement system attenuates year-on-year realizing the hardware compensation technology of the bridge power supply.
• The multi-bit A/D conversion satisfies the sensitivity and resolution requirements of the system and avoids the software frequency doubling method, reducing the characteristics of the system.

Multifunctional test software package

• Operating system Windows98/XP/2000 platform, Chinese operation interface (can upgrade to German version).
• The computer screen displays the test force, cylinder displacement, loading rate and deformation test data, and draws various test curves such as time-test force/deformation and deformation-test force. Automatic data processing, data processing methods meet the requirements of gb228-2002 standard, such as upper and lower yield points, maximum force points, all kinds of specified non-proportional stress points, all kinds of specified full elongation stress points, etc. At the same time meet the pressure test requirements of the testing machine.
• Software can simultaneously provide data analysis function to satisfy the data processing of test personnel for test analysis and special test.
• It has strong graphics operation functions, such as dynamic test curve and digital display function, graphics amplification and interception function, cursor following and display function, etc.
• VXDs high-speed data acquisition technology is adopted to realize multi-channel high-speed data acquisition.
• The system has a complete file operation function for the storage of test curve and test data. Meanwhile, experimental data can be stored in ASCII code form to facilitate users to conduct secondary data processing.
• With single test report output and batch test report output printing function
• The control system is equipped with overload, oversetting, power failure, piston reach the limit position and other protection functions.
• Hydraulic clamping oil source has independent low noise hydraulic clamping oil source, control the clamping and loosening of the chuck.

Standard Configuration of TT-EH0300 300KN Electro-hydraulic Servo Universal Material Testing Machine