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~Computer Controlled Electric- hydraulic Servo Steel Wire Testing Machine LAW Series

Product Description:
This series of products are mainly used in the mechanical properties of steel wire and other materials test.
Product details
Technical specification and scope of use
In the middle of the electronic programming can be arranged under
1. This series of products for the cylinder, double space frame structure, tension and compression spacing can automatically adjust the hydraulic automatic fixture, set the manual and automatic control. The control unit using the computer and electric hydraulic servo control system, with the stress, strain and displacement of three closed-loop control mode. The test data can be arbitrary access, and can realize data and curve analysis, local amplification and data editing, sample environment, test conditions, and can automatically calculate the material of the mechanical performance index, and print out the complete test reports and curves. The other is equipped with large gauge extensometer and steel strand special lengthening jaw, and ensure that the sample fracture.
2 this series of products fully meet the requirements of GB/T5224-2003< prestressed concrete with steel strand > and other standards.
3 control system:
A. adopt high precision amplifier and 24 bit high precision A / D converter, effective code + 120000, test force measurement resolution reaches 1/120000, measurement range of continuous measurement is not divided into stalls, measurement accuracy is better than 1 level.
The displacement measurement resolution of B. testing machine is 0.0025mm, which is used to measure and control the displacement of piston;
The deformation measurement resolution of C. testing machine is up to 0.00025mm, which is used to measure and control the deformation of the gauge of the sample;
D. using the independent development of digital servo valve as the control of the implementation of components, anti pollution ability, can achieve a long time no fault operation;
PID using E. control strategy to achieve constant speed test force, constant velocity strain, constant velocity displacement, constant velocity stress and other control modes, with human-computer interaction setting expert system control mode;
F. in order to manual, automatic two control test process, complete the test machine test data screen display, the user can according to their own needs to design the compound control mode of testing machine;
G. measurement and control system software can work under the Windows98/2000/XP operating system, using standard database management test data, and can provide network data interface,
H. has the test force, the peak, the deformation of the sample, the piston displacement, the screen display function of the test curve, real-time display test curve, can be arbitrarily selected display coordinates, such as: stress strain, load - deformation, load displacement, load time, displacement - time, and can be in a page at the same time display three curves, curve can be local amplification;
I. to determination of the tensile strength of steel strand, the specified non proportional extension strength, elastic modulus, elongation and other mechanical properties parameters, and accordingly the print results. According to the requirements of the print different contents of reports and curves. Using open excel report form, convenient user management; test the original record values, reported values according to the requirements of the standard GB/T228 rounding;
4 applicable standards and data processing:
A. users can customize the data processing software that meets the requirements of the national standard or other standards;
B. test process can simulate the reproduction and re analysis of the test data.\
Technical parameters

Specifications LAW300B LAW600B LAW1000B
Maximum test force (kN) 300 600 1000
Maximum relative error ±1%
Test force measurement range (kN) 1%~100%
Stress rate control range 0.2%-5%FS/s
Displacement rate control range 0.6 mm /min-60 mm /min

Test strain rate adjustment range 0.00025/S-0.0025/S

Maximum tensile space (mm) 1000
Maximum compression space (mm) 600 600 520
Steel stranded wire clamping diameter (mm) 15.20mm (other specifications)
Two pillar spacing (mm) 450 450 560
Total power (kW) 2 2.1 2.1
External dimension Host 940*630*3000mm 940*630*3000mm 920*610*3200mm
 Control table  1100*600*860mm
Net weight 2200Kg 2200 Kg3100Kg