Product Introduction

"Aolongxin" fully automaticProtruding noseRockwell hardness testerFor a large platformRockwell hardness testerUsing the Rockwell measurement principle, it is used for hardness testing of materials such as carbon steel, alloy steel, cast iron, non-ferrous metals, and engineering plastics. The "Aolongxin" platform is used for lifting and loweringProtruding noseRockwell hardness testerAdopting internationally advanced closed-loop sensor control technology, fully automatic control and hardness testing process have been achieved. The "Aolongxin" loading system uses high-precision force sensors and a central controller to form a closed-loop loop to achieve full microsecond level tracking and control of the force application process. Widely used in testing, scientific research, and production in industries such as metrology, mechanical manufacturing, metallurgy, chemical engineering, and building materials.

Product Features:

1. The high-speed precision step control system effectively avoids force overload and greatly improves loading speed

2. One click operation,ZThe axis automatically rises, and the loading, holding, and unloading force values are completed in one, truly achieving fully automatic operation

3. High testing accuracy and wide measurement range

4. Upper and lower limit settings, over tolerance alarm

5. Surface correction, automatic correction of cylindrical and spherical measurement results

6. The specially designed indenter extends horizontally and can measure parts such as rings and tubes that cannot be measured by ordinary hardness testers,Standard configuration is availabletestminimuminner diameter40mmCustomized indenter can test the minimum inner diameter25mm

7. High repeatability and accuracy

8. Easy to operate, with a switchable interface between Chinese and English (customizable for other language versions)

9. Ready to use upon startup, no need to install weights, easy to install and debug

10. The automatic lifting platform and automatic load initial test force can ensure stable force generation during measurement

11. Test process curve display, which can intuitively show material properties, facilitating observation and learning

12. Set password protection settings parameters

13. Save more samples and experimental information

14. Adopting a modular design for easy maintenance

Product Enhancement:

The "Aolongxin" high-speed precision step control system achieves high-precision and rapid testing to improve the control accuracy of the actuator

The "Aolongxin" system belongs to microsecond level control systems. It can achieve high-speed step control.

Enhance the overall performance of the equipment, improve the detection accuracy and speed of the equipment

1. Improve the ability to process analog signals from power sensors. change'Eyes'

2. Enhance the ability to process overall digital signals. change'Core'

3. Improve the accuracy of displacement measurement. Change the 'ears'

4. Improve the accuracy of motor control. Change hands

5. Improve the human-machine interface. Change the 'face'

Set up a dedicated management device for displacement sensorsQEI

The original motherboard does not have a dedicated management device,The CPU must continuously handle the displacement sensor signals personally throughout the entire loading process.

After setting up a dedicated management device,The CPU only needs to read data at the beginning and end of two time points. During the loading process, the CPU can centralize resource management of force sensors and loading motors, making control faster and more accurate.

Importing high-precision magnetic grid displacement sensors from Japan

The in-situ displacement sensor is a domestically produced grating displacement sensor. There is a problem of poor consistency and it needs to be matched with other devices for selection.

Japanese high-precision displacement sensors have high consistency. Less affected by the environment.

Traditional electric chargingRockwell hardness testerThe loading process of the force value is slow. If the loading speed needs to be controlled within the national standardWithin the 8 seconds required by GBT230/T-91, the red curve in the figure will continuously overshoot and unload to approach the total force F during the testthe phenomenon of The result of this is that the hardness tester must slow down the testing speed, resulting in a long testing time; Secondly, the phenomenon of overshoot has to some extent affected the accuracy of the experiment.

This device adopts more advanced and applicable technologyThe central processing chip responds to the entire hardness test process at high speed. From the start to the end of each hardness test, the central processing chip will process at ultra-high speed18000 to 30000 sets of data. Shorten the loading action that traditional electric hardness testers require 8 seconds to 1.75 seconds (ISO6508-1:99 standardizes the test force application time within 1-8s). As shown by the blue curve in the figure, the speed of the loading process reaches the maximum speed, and the force value is smooth without overshoot during the process of loading to the total test force, which improves the loading speed and accuracy of the electric hardness tester.

Detailed explanation of the "Aolongxin" curve

1.Force value and pressure depth curve.

During the operation of the hardness tester, the main chip reads real-time data from pressure sensors and displacement sensors, and converts the data into curves. The curve in the figure isThe force value and depth curve of 28.3HRC hardness block.

2.pressure-Depth curve

Export synchronized data of pressure and pressure depth during the detection process, and automatically generate pressure-Deepen the curve and determine the shaded area for research on elastic modulus, etc.

The vertical axis in the figure represents pressure, and the horizontal axis represents depth

Accurate hardness correction

The standard hardness curve is a straight line, as shown in the figureBlack line segment.

The automatic hardness correction of traditional electric digital hardness testers is shown in the yellow line segment in the figure. The correction is generally divided into three sections, and only matches the standard hardness near the calibration point. The further away from the calibration point, the greater the difference in hardness values.

pass throughFurther transformation and improvement of the control method of "Aolongxin", the original hardness curve of the machine is shown in the red line segment in the figureBy applying a common coefficient to the hardness correction of the entire range, the hardness curve will be raised to a state where it matches the standard hardness curve. The conclusion drawn from the experiment is that, given a common coefficient, without any interval correction24HRC, 48HRC, and 63HRC standard hardness blocks were used for hardness testing, and their hardness values were 24HRC with an error of 0.9HRC compared to the standard blocks，48HRC error is 0.2HRC，The error of 63HRC is 0.8HRC.

Now divide the entire hardness range intoMore than 8 hardness correction intervals, as shown in the blue line segment in the figure, this correction method refines the entire hardness interval and simplifies and refines the hardness correction of the electric digital hardness tester.

Technical Specifications

Standard Configuration