Overview
LEEB U916 Portable Leeb hardness tester is an innovative multi-functional Hardness measuring instrument based on the Richter Hardness Measurement principle. It integrates built-in high-speed thermal printer, tolerance limit setting and other functions, supports on-site instant printing, ensuring the fairness and data traceability of measurement results. The instrument adopts full Chinese menu operation, the interface is intuitive, and can directly display Richter, Brinell, Rockwell, Vickers, Shaw and other Hardness values. It has the characteristics of small and portable, high Reliability, anti-vibration, Impact and electromagnetic interference, and is suitable for harsh operating environments.
Features
1. According to the Richter Hardness Measurement principle, all metal materials can be tested for High Accuracy, adding a variety of hardness of materials and "user material" function, theoretically all metal materials can be tested.
2. Easy to switch to all Hardness formats (HL, HB, HRB, HRC, HRA, HV, HS), and convert each Hardness measurement value in parallel.
3. Adopt large-screen true color LCD and WOINDOWS interface, the information is clear and intuitive, the menu operation is simple and convenient, and the LCD luminance can be adjusted arbitrarily.
4. Equipped with USB communication interface, it can easily and quickly exchange data with PC and set parameters.
5. One main engine can be equipped with 7 different impact devices, automatically identifying the type of impact device, and no need to re-calibrate when replacing.
6. Hardness measurement data can be stored up to 600 groups, each group contains information such as single Measured value, average value, measurement date, Impact direction, number of times, material, Hardness system, etc.
7. The upper and lower limits of Hardness values can be preset, and the range is automatically alarmed to facilitate batch testing.
8. The power supply adopts an integrated lithium battery, which can work continuously for not less than 100 hours. It has power-saving functions such as automatic sleep and automatic shutdown. The LCD screen has a remaining power indicator icon.
9. Adjustment of indication software.
10. It can be equipped with powerful microcomputer software to meet higher requirements such as data management, statistical analysis, and printing reports.
11. Built-in thermal printer, can directly print the current measurement data or select a set of data stored.
Principle
The instrument works based on the Richter Hardness Measurement principle. The impact body is impacted on the surface of the measured material by the Impact device, and the ratio of the rebound velocity of the Impact body to the impact velocity at a distance of 1mm from the surface of the sample is measured to calculate the Richter Hardness value. The internal algorithm of the instrument can convert the Richter Hardness value in parallel to the values of Brinell, Rockwell, Vickers, Shore and other Hardness standards.
Applications
Installed machinery or permanent assembly parts, mold cavities, heavy workpieces, Pressure Vessels, turbo-generator sets and their equipment failure analysis, measurement space is very small workpieces, bearings and other parts, metal material warehouse material distinction, large workpieces in a wide range of rapid inspection of multiple measurement parts
Standards
"Leeb hardness tester technical conditions" JB/T 9378-2001
Steps
1. Choose the appropriate Impact device (such as D, G, C, DL, DC, D + 15 type) according to the tested material and workpiece conditions (such as size, surface condition, hardening layer thickness, etc.).
2. Turn on the instrument power supply and set the Measurement parameters through the Chinese menu interface, such as material type, Hardness standard, tolerance limit, etc.
3. Press the Impact device vertically on the surface of the workpiece to be tested, and press the Impact button for measurement.
4. The instrument screen directly displays the measurement results (single value and average value) and the selected Hardness standard value.
5. The measurement data can be automatically stored, printed instantly through the built-in thermal printer, or transferred to the PC through the USB interface for further processing.
Notice
• Hardness testing of products during mass production, generally a standard set can meet the testing requirements.
• Hardness testing for heat treatment such as annealing, tempering, and quenching should pay attention to the thickness of the hardened layer. If the hardened layer is too thin, choose a C-type Impact device.
• When testing bearing Hardness, pay attention to its diameter. If the diameter is too small, choose a special-shaped support ring.
• When testing gear Hardness, select the DL Impact device if the gear is too small.
When inspecting castings, if the surface finish is difficult, choose a G-type Impact device.
• Operating temperature of the instrument is 0-40 ℃, please use it in a suitable environment.
• Please pay attention to the remaining power indicator icon on the LCD screen in time, and charge the integrated lithium battery to ensure the normal operation of the instrument.
