Electro hydraulic servo hydraulic universal testing machine

1、 Introduction:

The WAW-300B electro-hydraulic servo hydraulic universal testing machine is a two column, two screw, and oil cylinder downward type. The stretching space is located above the main engine, and the compression and bending testing space is located between the main engine's lower crossbeam and the worktable. The measurement and control system adopts a fully digital multi-channel closed-loop measurement and control system with three closed-loop functions, which can perform stress, strain, displacement closed-loop control and other control methods, and can switch without impact. Its stress velocity and strain rate * meet the requirements of other metal tensile testing standards such as GB/T228.1-2010.

The national metrological verification regulations for this series of products

The measurement and control software of this series of products has passed the review of the National Iron and Steel Research Institute

2、 Transmission system:

The lifting of the lower crossbeam is achieved through the use of a motor, a reducer, a chain transmission mechanism, and a screw pair to adjust the stretching and compression space.

3、 Hydraulic system:

The hydraulic oil in the oil tank is driven by a motor to enter the oil circuit through a high-pressure pump, and flows through a high-pressure oil filter, a pressure differential valve group, and a servo valve before entering the oil cylinder. The computer sends control signals to the servo valve to control the opening and direction of the servo valve, thereby controlling the flow into the oil cylinder and achieving control of constant speed test force, constant speed displacement, etc.

4、 Control system:

1. Support conducting tensile, compressive, shear, bending and other tests;

2. Support open editing experiments, editing standards and editing steps, and support exporting and importing experiments, standards and steps;

3. Support customization of experimental parameters;

4. Adopting an open EXCEL report format, supporting user-defined report formats;

5. Querying and printing test results is flexible and convenient, supporting the printing of multiple samples and custom sorting of printing items;

6. The program comes with * experimental analysis function;

7. The program supports hierarchical management with two levels of user management permissions (administrator, tester);

5、 Safety protection device:

1. When the test force exceeds 3% of the maximum test force, overload protection is activated and the oil pump motor is shut down.

2When the piston rises to the upper limit position, the limit protection stops and the oil pump motor stops.

3. When the crossbeam descends to the set position, limit protection is activated and the gearbox stops.

6、 Main performance and technical indicators:

7、 Factory standard configuration list: