SXW Computer Control Steel Strand Relaxation Testing Machine
Application:
It is mainly used in the tensile stress relaxation performance testing for pre-stressed steel wire, steel strand and pre-stressed steel bar.
Standard:
ASTM E328-2008 Standard Test Methods for Stress Relaxation Tests for Materials and Structures
ISO 15630-3:2002 steel for the reinforcement and prestressing of concrete-Test methods- Part 3: Prestressing steel, MOD
ISO 6934-4: 1991 Steel for the presressing of concrete – Part 4: strand, NEQ
GB/T 5224-2014 Steel strand for prestressed concrete
GB/T 10120-1996 Metallic materials -Tensile stress relaxation - Method of test
GB/T 21839-2008 steel for prestressed concrete -Test methods
Parameters:
| Model | SXW-300 | SXW-500 |
| Max test force | 300KN | 500KN |
| Efficient measure range of Test force | 6-300KN | 10-500KN |
| Force indication Relative Error | +/-1% |
| Discrimination for test force | 5N |
| Displacement indication relative error | +/-1% |
| Loading speed | 100 -5000N/S, random setting |
| Lead screw volume(mm) | 100 |
| Testing space(mm) | 2100 |
| Source power | 1.5KW AC200V+/-10% | 3KW 380V |
| Overall dimension(mm) | 2000*1100*600 | 2400*600*1100 |
| Total weight(kg) | 1250 | 1500 |
Features:
1. It can show the relative diagram of residual testing power/relaxation rate with time, and relative diagram of temperature and time.
2. The stress relaxation properties of the specimen in 1000hours can be calculated by the machine.
3. It can gain the stress relaxation properties of specimen automatically and print a complete testing report.
