HUT-DJ series (stranded wire)

Test type

·             Slip &      Tensile Strength

·             Permanent      Elongation & Tensile Strength

·             Static      Tension Test

·             Static      Compression Test

·             Stranded      wire tensile test

 

Description

HUT series type DJ servo-hydraulic universal testing machine is specially designed with extra-long jaw face, specifically used for stranded wire tensile test. It is designed with up-mounted actuator structure. Bidirectional differential cylinder provides bidirectional control of tension and compression in one single space.  

            Clearance-free structure and actuator up and down to adjust the test space offers easy operation and high efficiency. This machine is mainly used for tensile test of metallic materials. It provides closed loop control of constant force, constant displacement and constant extension, smoothly switching among them.

            Test results can be automatically calculated and be able to printed and exported. 

 

Load Frame Configuration: 4 columns, servo-controlled hydraulic

Capacity:  600kN, 1000kN, 2000kN


Test Space:  Single zone


Typical specimens:  Stranded wire, fasteners, rebar, chain, welds, castings

 

Features

Load frame

1.    Specially designed longer jaw face for tensile test of stranded steel wire.

2.     Single zone design ensures all types of tests finish in one space. Compact and reasonable design is ergonomic and effectively reduces labor intensify.

3.     Upper actuator features excellent axis alignment, good shock absorption and easy to adjust test space.

4.     Advanced wedge type hydraulic tensile grips provide high gripping performance for high strength and high hardness materials.

5.     Long travel double-acting cylinder can accommodate different specimen size. One-body forging piston and rod, and imported sealing components, ensure perfect sealing, high accuracy and repeatability. 

6.     Robust and high-accuracy guidance protects cylinder from lateral force, improving the working life of sealing components.

7.     “I” shape force transducer features excellent linerity and stability with ultra measurement accuracy.

8.     Nemicon encoder provides with high accuracy of displacement measurement and control.

9.     DDV D633 MOOG servo valve offers fast response and high-accuracy control, and easy to maintain.

10.  Equipped ABB motor features high efficiency, energy-saving, high start-toque, good performance, low noise, low shaking, high reliability and easy to maintain.

  

Main cylinder

·        Piston rod is Nickel and Chrome plated. Plating thickness can reach 0.1mm with strong anti-corrosion and anti-wearing ability.

·        Extra thick rod ensures high stiffness to resist lateral loading.

·        Piston and rod are one-body forging with strong impact resistance.

·        Sealing components are Hallite U shape and double sealing ring, ensuring zero leakage.  

·        Hallite guidance wearing ring is applied to ensure high resistance to lateral force and low friction.

·        Main cylinder matching with differential circuit allows fast return of piston.

·        Zero clearance and pre-loading connection between piston rod and upper grip guarantees high reliability.

·        WANCE uses most advanced Piston / guide sleeve copper melting process as wearing ring, with service life five times than polymer material.


Hydraulic power unit

·        Equipped with SUN Cartridge logic valve in the hydraulic system of the equipment, it can be smart regulation of system pressure. The pressure servo technology can guarantee that the system pressure is always only higher than the cylinder pressure 1MPa, when the test force is low, the pump output pressure is lower, when the test force increases, pump output pressure increases the proportion too.

·        The differential pressure is adjustable to ensure no shaking during test, thus saving energy and reducing heating

·        Low noise: NACHI Japan gear pump, combined with our technology of HPU production, its noise is not more than 70dB, improving the working conditions of workers.

·        Easy installation and maintenance: The hydraulic unit is designed with semi-open structure. Rear cover opens two doors, easy maintenance and parts replacement.

·        Low heating and good cooling: The unique pressure differential servo control technique makes the system heat significantly reduced. The hydraulic unit is designed with semi-open structure and air-cooling device. Cooling devices can start automatically or manually. The air-cooling motor automatically starts when the temperature reaches the preset value of oil temperature gauge, making the system in high temperature environment continue to work normally. The whole system heating power is 2kW.

·        High filtration precision: triple filter, the particle size is less than 5 microns before entering the servo valve, improving the service life of the servo valve and control accuracy, easier to maintain.

·        Pressure overload protection: when the pressure exceeds the system rated pressure, relief valve will begin to overflow, to ensure the security of the entire system.

·        Seal method: the hydraulic lines from the tubing to the connector are equipped with Eaton products from USA. Piping lines are sealed with high-pressure hose sleeve type Cone fittings with excellent sealing performance, which can be repeated assembly and disassembly. Cylinder piston rod and piston seal are used with British Hallite patented Hythane U- seals and dust ring , at the same time with Hallite high anti-lateral pressure and low friction rate of large-size guide ring , offering high ability to resist lateral force, thus to ensure cylinder of zero leakage and long service life.

·        The advantages of the HPU: HPU consists of 25MPa high-pressure part and 50MPa super high pressure part. The main cylinder working pressure is around 25MPa and the clamping cylinder working pressure is around 48MPa. Only one motor drives oil pump. Through the booster to gain extra-high pressure, thus with lower noise.

·        The system has two sets of differential circuit. One is for main cylinder, so that after the end of the test, the main cylinder piston can faster return to improve work efficiency. Another is for the clamping cylinder. Clamping cylinder allows fast and low pressure gripping the specimen. Only after samples are fully clamped, extra-high pressure can be supplied, avoiding damaging sample because of too high clamping force. After specimen is broken, high pressure will be automatically released. This design fully takes the efficiency and operational safety into account.

 Controlling system – DTC-500

1.     Closed loop control of stress, strain and displacement.

2.     1200Hz sampling frequency and closed-loop control frequency

3.     20bit resolution

4.     16 I/O port

5.     Standard RS232 communication, optional USB communication

6.     Over-load, over-current, over-voltage, over-speed, and over-travel protection

 

Professional test software

This software features a large, growing host of pre-packaged test methods to help you quickly and efficiently meet the requirements of global test standards such as ASTM, ISO, DIN, EN, BS, and more. Selected by an operator at runtime, these methods are crafted to meet the specific test flow, analysis and reporting requirements of industry standards across a range of specimen and test types. Pre-packaged test methods are available in a wide selection of bundled sets, including: Polymers & Plastics, Metals, Construction Materials, Biomedical Products, Paper Products, Adhesives, foam, textiles and more.

Ø  Versatile, easy-to-use TestPilot software with a large and growing library of standards-compliant test methods (ASTM, ISO, DIN, EN, BS, and more)

Ø  Modular design permits easy upgrading

Ø  Plenty of test standards are built in the library of the software for routine tests.

Ø  User configured report: user can preset report template and include necessary information, like company information, statistics, and etc. Test report can export to Excel or Word.

Ø  Powerful graphic function: real time display curves, like displacement-load, stress-strain, displacement-time, load-times, and others

Ø  Powerful analysis function can calculate typical value and display on the curve, like Fm, ReL, ReH, Rp.

Ø  Measurement unit: Users can select SI, or others, like N, kN, Kgf, lbf, Mpa, and so on, user can define the unit by themselves using formula.

 


 Machine dimension

Model

Dimension   (mm)

A×B×C

Effective   tensile space (mm)

D

Maximum   compression space(mm)

E

Distance   between columns (mm)

F×G

Piston   travel

(mm)

HUT605DJ

800x600x3230

800x600x3730

600

1100

400

900

580x360

580

HUT106DJ

870x650x3500

870x650x3800

700

1000

485

785

585×365

680

HUT206DJ

1200x900x3930

800

525

770×470

780

 

 Specifications:

Model

HUT605

HUT106

HUT206

Type

Type DJ

Capacity (kN)

600

1000

2000

Calibration accuracy

Class 1 / Class 0.5

Force accuracy

Better than ±1%/±0.5%

Force range

1% ~ 100%FS

Extension range

1% ~ 100%FS

Extension accuracy

Better than ±1%/±0.5%

Extension resolution

1/50000 of max extension

Actuator (piston) up speed (mm/min)

280

240

195

Actuator (piston) down speed (mm/min)

660

375

310

Force loading speed

0.02%-2% FS /s

Column number

4

4

4

Column spacing (test space width) (mm)

580x360

575×355

770×470

Maximum tension space (mm)

600

1100

700

1000

800

Maximum compression space (mm)

400

900

485

785

525

Diameter of round specimens (mm)

Φ10~Φ40

Φ12-φ42

Φ15~Φ70

Diameter of stranded wire (mm)

Φ6-Φ21

Φ6-Φ21

Φ6-Φ21

Thickness of flat specimens (mm)

2 ~ 30

2 ~ 40

10 ~ 70

Compression platens (mm)

Φ150

200x200

Φ240

Actuator (piston) stroke (mm)

580

680

780

Frame dimension (LxWxH) (mm)

800x600x3230

800x600x3730

870x650x3500

870x650x3800

1200x900x3930

Hydraulic Power Unit dimension

(LxWxH) (mm)

600x880x925

870x1080x1100

860x1350x1250

Oil tank volume (liter)

90

210

380

Power consumption (kW)

5

8.5

12

Power supply

3-phase, 5-line, AC380V, 50Hz

Frame weight (kg)

3300+400

5000+700

9800+1200



This machine is specially manufactured for stranded wire tensile test.

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0755-23057996