High Temperature Creep and Relaxation Testing Machine
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Introduction :GWTA series High Temperature Creep and Relaxation Testing Machine is designed as low cost solutions for long-term creep and stress relaxation testing applications of metallic and alloy materials under high temperature in accordance with ASTM, BS, EN, ISO and other similar international testing standards. SANS offers three models electronic high temperature creep testing machine with full closed-loop servo-control in three capacities : 30kN, 50kN and 100kNInstruction & configuration GWTA Series high temperature creep and relaxation testing machine apply advanced servo motor and ball screw actuator which assure loading conveniently and simply. The drive system comprises a printed circuit motor with toothed belt and gearbox to the recirculating ball screw actuator. A backlash-free, anti-torque bar and a pneumatically operated mains failure protection device are incorporated as standard. Load cells, electronic extensometers, DCS-300 controller, furnaces, temperature controllers, elapsed time meters and loading bars are identical to those applications for the GWTA series.
A completely enclosed robust base unit supports the lower crosshead and test actuator. This base unit houses an integral spur gear box/HTD toothed belt drive assembly, printed circuit motor & tachometer
Features & Functions :• Motorized draw-head assembly automatically compensates for specimen elongation and keeps loading bar with excellent load accuracy of +/- 0.5% guaranteed.• Both room temperature and elevated temperature systems are available• Furnace and chambers available with temperature ranges from 200℃ to 1200℃in common air environments• Numerous high temperature pull rods, specimen holders, furnace systems and extensometers available for creep and stress Relaxation applications. Many of which are also adaptable to hot tensile testing applications on universal testing machines.• Relaxation test be available via GWTA Series instead of lever type-high temperature stress rupture testing machine• DSC-300 control system owns the three closed control function as load control, extension control, and velocity control. High precise control and accurate load with load measurement resolution reach 1/300000; the loading testing curve can be plotted automatically.• Additionally, manual operation also be offered, users can unload to protect the apparatus by hand, especial the load cell, when suddenly power cut off.• SANS Powertest software owns powerful function offering specimens registration, apparatus control, test data acquisition and store, test result inquiring, data processing and test report export • Remote communication control function saves your operators invigilation during testing process; alarm message can be transmitted to your mobile phone to inform you test situation by equipping with special dial number device.High Temperature Furnace:SANS new designed three-zone open cylindrical furnace features ceramic fiber insulation structure which is the first application in China. The heating elements are individually take action on ceramic half tube sections, and provide three heat zones for excellent control of temperature gradients and reliably continuous operation up to the specified maximum temperature. During the test the emperature is controlled directly by a thermocouple on the test 0specimen. The three-zone controllers incorporate the microprocessor based instruments which give three-term control and digital display. Proportional band, integral and derivative time constants, cut back and heat power limit are standard features. In addition, a range of test chamber assemblies is available for use inside the high temperature furnaces, thus allowing creep studies under hostile atmospheric conditions.
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