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1.Application 
Microcomputer-controlled Electro-hydraulic servo control universal testing machine is a high-precision, multi-purpose material testing machine

that tests the mechanical properties of various metal materials, non-metal materials, composite materials in the state of tension, compression and bending.

2.Features
1) Can do Tension, Compression, Bending, Shear Test
2) Can test materials:rebar, steel bar, steel plate, carbon fiber steel bar, bolts, nuts, wire ropes
3) Can be customized following any customer's request and test standards.
4) Computer + Software control and display 6 kinds test curves:
force - displacement, force - deformation, stress - displacement,
stress - deformation, force - time, distortion - time 
5) Fully closed loop servo control, adopts servo controller
6) Also have Computer Display Type,Digital Display Type

3.Technical Parameters

Model

WAW-300D

WAW-600D

WAW-1000D

WAW-2000D

Max.load

300KN

600KN

1000KN

2000KN

Load accuracy

Class 1  (Class 0.5 optional)

Load range

1%-100%FS (0.4% -100%FS optional)

Load resolution

1/500000

Piston Stroke

200mm

200mm

250mm

250mm

Max. tensile test space

600mm

700mm

700mm

800mm

Max. Compression test space

550mm

650mm

650mm

750mm

Effective test space

440mm

505mm

525mm

685mm

Clamping method

Hydraulic Automatic Clamp Fixture

Bending roller width(mm)

30x120mm

Bending span (mm)

30-450mm

Power supply

3-phase, 380V, 50HZ 2.0kw (can be customized)

4.FAQ
A: What are the four major transmission methods for mechanical equipment? What are the advantages and disadvantages of the transmission method?
Q:

There are various types of mechanical equipment, and the functions and movement methods are also different. Some institutions are relatively small, flexible in movement, and some institutions are relatively heavy, which is a bit clumsy, but it does not change from the other. Mainly divided into four types, mechanical transmission, electric drive, hydraulic transmission, pneumatic transmission, these four modes of operation have their own advantages and disadvantages, have their own applicable occasions.

4.1 mechanical transmission
gear drive
Classification: face gear drive, space gear drive.
Advantages:
Wide range of applicable peripheral speeds and powers;
The transmission ratio is accurate, stable and efficient;
High reliability and long life;
It can realize the transmission between the parallel axis, the intersection of any angle and the arc of any angle.
Disadvantages:
High manufacturing and installation accuracy and high cost;
Not suitable for transmission between two axes at a distance.
The basic dimensions of the involute standard gear are: tooth top circle, root circle, index circle, number of touches, pressure angle, and so on.
Turbo vortex drive
Suitable for motion and power between two axes with vertical and non-intersecting spaces.
Advantages: large transmission ratio and compact structure.
Disadvantages: large axial force, easy to heat, and low efficiency. Only one-way transmission.
The main parameters of the turbo vortex drive are: modulus, pressure angle, worm wheel indexing circle, worm indexing circle, lead, worm gear number, worm head number, gear ratio and so on.

4.2.electric drive
High precision: Servo motor is used as the power source, and the ball screw and the timing belt are composed of a simple and efficient transmission mechanism. Its repeatability error is 0.01%.
Energy saving: The energy released in the deceleration phase of the working cycle can be converted into electric energy for reuse, thereby reducing the running cost, and the connected electric equipment is only 25% of the electric equipment required for hydraulic driving.
precision control: according to the set parameters to achieve precise control, with high-precision sensors, metering devices, computer technology support, can greatly exceed the control accuracy that can be achieved by other control methods.
Improve the level of environmental protection: Due to the reduction of energy use and its optimized performance, the pollution source is reduced and the noise is reduced, which provides a better guarantee for the environmental protection work of the factory.
Reduce noise: The operating noise value is less than 70 decibels, which is about 2/3 of the noise value of the hydraulically driven injection molding machine.
4.3.hydraulic transmission
advantage:
1) From the structural point of view, the output power per unit weight and the output power per unit size are force-compressed in the four types of transmission modes, and there is a large moment inertia ratio. Under the condition of transmitting the same power, the hydraulic transmission device Small size, light weight, low inertia, compact structure and flexible layout.
2) From the perspective of work performance, the speed, torque and power can be adjusted steplessly, the action response is fast, the speed can be changed quickly and the speed is changed, the speed regulation range is wide, and the speed regulation range can reach 100:1 to 2000:1; The speed is good, the control and adjustment are relatively simple, the operation is convenient and labor-saving, and it is convenient to cooperate with the electric control and the connection with the CPU (computer) to facilitate automation.
3) From the point of view of use and maintenance, the self-lubricating property of the components is good, and it is easy to realize overload protection and pressure keeping, which is safe and reliable; the components are easy to realize serialization, standardization and generalization.
4) All equipment using hydraulic technology is safe and reliable.
5) Economy: The plasticity and variability of hydraulic technology are very strong, which can increase the flexibility of flexible production, and easy to change and adjust the production process. Hydraulic components are relatively inexpensive to manufacture and have relatively high adaptability.
6) The combination of hydraulic technology and new technologies such as microcomputer control constitutes the “machine-electric-liquid-light” integration, which has become the trend of world development and is easy to realize digitalization.
Disadvantages:
1) The hydraulic transmission is inevitably leaked due to the relative moving surface. At the same time, the oil is not absolutely incompressible. In addition to the elastic deformation of the oil pipe, the hydraulic transmission cannot obtain a strict transmission ratio, and thus cannot be used for machine tools such as threaded gears. In the inline drive chain.
2) There are loss along the loss, local loss and leakage during the flow of oil. The transmission efficiency is low and it is not suitable for long-distance transmission.
3) Under high temperature and low temperature conditions, there are certain difficulties in using hydraulic transmission.

4.4.pneumatic transmission
advantage:
1) With air as the working medium, the working medium is relatively easy to obtain, and the used air is discharged to the atmosphere, which is convenient to handle, and it is not necessary to provide a recovered fuel tank and pipeline compared with the hydraulic transmission.
2) Because the viscosity of air is very small (about one ten thousandth of the viscosity of hydraulic oil), its loss is also small, so it is convenient to concentrate gas supply and transport at a long distance. External leaks do not pollute the environment as much as hydraulic drives.
3) Compared with the hydraulic transmission, the pneumatic transmission has quick action, fast response, simple maintenance, clean working medium, and no deterioration of the medium.
Disadvantages:
1) Since the air is compressible, the working speed stability is slightly poor. However, the use of gas-liquid linkage device will get satisfactory results.
2) Due to low working pressure (generally 0.31.0MPa), and because the structure size should not be too large, the total output force should not be greater than 10~40kN.
3) The noise is large, and the muffler should be added during high-speed exhaust.

 

DIN EN ISO 6892-1 :Metallic materials - Tensile testing - Part 1: Method of test at room temperature

ASTM A370: Standard Test Methods and Definitions for Mechanical Testing of Steel Products

ASTM E8:Standard Test Methods for Tension Testing of Metallic Materials

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