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Microcomputer controlled tensile stress relaxation testing machine for steel strand
Application:
This machine is used to do stress-relaxation test of steel strand, galvanized steel wire, indented wire etc
metal materials. The host machine adopts horizontal structure, adjust work space by lead screw, and the
transmission system is inside the machine base, the machine has very high stiffness, which guarantee
the accuracy of test results.
Test standard:
--ISO15630-3: 2010 Steel for reinforcement and prestressing of concrete- Test methods part 3: prestressing steel
--ASTM E328-13: Standard test methods for stress relaxation for materials and structures
--ASTM A416 Standard specification for low-relaxation, seven-wire steel strand for prestressed concrete
Main Specifications:
| Model | KSC-300 | KSC-500 |
| Max. Load | 300kN | 500kN |
| Measuring range of test force | 12-300kN | 20-500kN |
| Accuracy of indicating force: ≤±1% | ≤±1% | |
| Loading speeding | 100-5000N/s, arbitrary setting | |
| Loading speed relaxation test space | 2000mm | |
| Chuck displacement speed | 0.001-25mm/min | |
| Accuracy of chuck displacement speed | ±0.5% | |
| Displacement resolution | 0.001mm | |
| Tensile stroke | 0-100mm | |
| Creep of load cell | ≤0.2% (within 30 minutes | |
| Specimen Dimensions(Optional according to customer requirements) | ||
| PC Strand | φ9.53mm,φ12.7mm, φ15.24mm | |
| PC wire | Φ3~Φ9 | |
| PC Bar | Φ7~Φ18 | |
| Resolution of temperature sensor: | 0.1℃ | |
| Accuracy of temperature sensor | 0.3℃ | |
| Power supply | 3-phase,5 wires (3 live lines L,1 null line N,1 earth line PE) 380V,50Hz | |
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