Servo-Electromechanical Relaxation Testing Devices – Including all types of Jaws and Fixtures, Dynamometers, Thermal Chambers and Extensometers
Application:
* Performing the relaxation test for PC WIRE in ambient conditions with a temperature of 2 + 20 ℃
* Testing to select materials with higher performance under permanent strain conditions such as coiling
* Prestressed wires PC Wire & PC Strand
* Determination and evaluation of relaxation test on different metals
* Assist in more accurate design or calculations according to simulated working conditions
* Research and development (R&D) in the field of high strength steels
* Quality control (QC) and production
Product Introduction:
The drop in permanently loaded tensile force on the part that occurs as a result of controlling and keeping it stable is called relaxation. Servo-electromechanical relaxation testing devices record the amount of length change over a long period of time; These types of devices act like the creep device – in which force is the control factor – and displacement is the control factor and measures and records the amount of force loss.
The relaxation test device is designed to check the force or stress drop in metals under fully controlled environmental conditions. Basically, this test is performed on PC Wire and PC Strand metals. The above device is provided with Servo Electero-Machanical mechanism and dead weight in different capacities. In the relaxation test, a specified stress that is less than the final limit (usually 70 or 80% of the final limit) is applied to the sample, and then the control is performed on the change in the length of the sample.
In all the process the force loss graph is drawn with respect to time. Release tests are very time-consuming; For this reason, these devices must be very accurate and sensitive, and constant stability and control are among the prominent features of this type of devices. This device is designed for long-term tests according to its specialized mechanism and software. In this way, the maximum amount of strain is controlled by the extensometer and a detailed report of the power loss is recorded over time.
Technical Specifications:
|
Model |
SRT-100B |
SRT-400B |
|
Capacity |
10 tons |
40 tons |
|
Operation Type |
Fully automatic force application by special software |
|
|
Test speed range |
(0.0001-100) mm/min AC Serwo motor and driver |
|
|
Force measurement |
Low Profile model load cell |
|
|
Measurement of location change |
Digital magnetic linear encoder extensometer |
|
|
Measurement accuracy |
F.S% 0.1 degrees of resolution 1 μm |
|
|
Stroke-test |
150 mm |
|
|
Dimensions (width × depth × height) |
100 × 70 × 220 cm |
116 × 100 × 300 cm |
|
Device weight |
750 kg |
1550 kg |
|
Type of jaws |
Manual WG with various wedges |
|
|
Electricity |
220 V, 10 A |
|
|
power |
2 kW |
3 kW |
Advantages:
* Fully computerized control and special software under the operating system, Windows XP, 7 to perform the relaxation test with the ability to draw the graph of power loss with respect to time (Relaxation)
* Controlling the strain applied on the sample according to the standard and automatically
* Equipped with AC Servo driver motor for precise movement control (Close Loop control)
* High repeatability
* Easy of jaw replacement
* Having a rigid frame
International Standards or Permission:
ASTM A416, ASTM E328, ASTM A421
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