1 Leeb Hardness Test (definition) An impact body with a spherical test tip made of tungsten carbide is propelled against the sample surface by a spring force and then rebounds back. At a distance of 1mm from the sample surface, the impact and rebound velocities of the impact body are measured by the following method: when passing through the coil in its coil holder, a permanent magnet embedded in the impact body induces in the coil an electric voltage proportional to the velocity of the magnet.
2 Specifications, Features and Applications 2.1 Introduction HARTIP 3000+ is a new generation of Leeb hardness tester with more advanced technology and features. The tester applies our new patent dual-coil sensor technology which makes the tester more accurate than old previous model.
3 Hardness Tester Parts Names 3.1 Main body 3.2 Types of Impact Devices Loading tube Guiding tube Coil holder with coil Release button Connecting cable leading to the indicating device with coil plug Large supporting ring Impact body...
3.3 Special Features of Impact Devices Type Brief description Universal standard unit for majority of hardness testing assignments. Extremely short impact device, other specs identical with type D. Application: - highly confined spaces - holes and cylinders - internal measurements on assembled machines D+15 Slim front section Application:...
4 Symbols and Illustrations 4.1 Meaning of Various Symbols Symbol Meaning Leeb hardness value obtained with impact device D Leeb hardness value obtained with impact device DC Leeb hardness value obtained with impact device G Leeb hardness value obtained with impact device C LD15 Leeb hardness value obtained with impact device D+15 Leeb hardness value obtained with impact device E...
The coupling surface between the sample and base plate should be flat, plane parallel and ground. A proper thin layer of coupling paste is to be applied to the contact surface of the sample. The sample should be firmly pressed against the base plate surface by moving it with a circular motion. The direction of impact should be perpendicular to the coupling surface.
depth of the hardened layer should be no less than 0.8 mm. When measuring with impact device C, the depth of the hardened layer should be no less than 0.2 mm. Types of impact devices Min. layer thickness for surface hardening D/DC, D+15,DL,E 0.8mm 0.2mm...
Impact device types D/DC, D+15, C and E Rmin=30mm Impact device type G Rmin=50mm For impact devices D, DC, D+15, C and E, special support rings are available to accommodate smaller radii on convex or concave surface. Types of impact devices Support Ring Radius for Curved Surface (mm) D/DC, D+15,C,E...
Test Menu Press it shortly: to enter test menu Upward Press it shortly: to move the cursor up Increase Press it shortly: to increase current number Downward Press it shortly: to move the cursor down. Decrease Press it shortly: to decrease current number Leftward Press it shortly: to move the cursor left Rightward...
7.1 Turn On/Off the Instrument Press shortly to turn on the instrument, then the tester will enter measuring mode, Press and hold to turn off the tester. Press to switch different measuring modes. 7.2 Home Menu Press to enter test menu and then press to enter home menu.
7.4 Calendar Press to enter test menu and then press to enter home menu. Press to select Calendar. Press to enter. Select Time / Date / Format and press to adjust. Press to go back to Home menu, or press to return to Measuring screen.
7.7 Probe Type Press to enter test menu. Press to select Probe type, then press to enter. Press to select suitable Probe type, press to confirm. You may select “D→DL→D15→G→C→E” probe. Press to go back to Test menu, or press to return to Measuring screen.
7.9 Hardness Scale Press to enter test menu. Press to select Hardness Scales, then press to enter. Press to select suitable Hardness Scale, press to confirm selection. Press to go back to Test menu, or press to return to Measuring screen. ...
The settings of Upper/Lower Limit will impact the statistics of the qualified rate. Any value overrun is deemed as disqualified, otherwise, it is deemed as qualified. 7.11 Mean Time Press to enter test menu. Press to select Mean Time, then press to enter.
On: To enable / disable the calibration. Before calibration, please load factory default settings first (refer to 7.3 Load Default), then select calibration menu, then adjust value according to the accuracy, finally press to accept changes. After Calibration is done, the symbol will be displayed at the top line of the screen.
7.14 Bluetooth Device (Optional) Press to enter test menu and then press to enter Configuration menu. Press select Bluetooth device. Press to enable / disable Bluetooth function. After selection, press to go back to Measuring screen. 7.15 RF port (Optional) Press to enter test menu and then press to enter Configuration menu.
7.17 Battery Type Press to enter test menu and then press to enter Configuration menu. Press select Battery Types then press to confirm. After selection, press to go back to Configuration menu, press to go back to Measuring screen. 7.18 Sound Press to enter test menu and then press to enter Configuration menu.
7.20 Save every-test Press to enter test menu and then press to enter Database menu. Press to select Save every-test, then press to enable / disable this function. After selection, press to go back to Measuring screen. 7.21 View Press to enter test menu and then press to enter Database menu.
7.23 Export All Press to enter test menu and then press to enter Database menu. Press to select Export All, then press to enter Export all page. Press to go back to Database menu. 7.24 Statistical analysis Press to enter test menu and then press to enter Database menu.
D M1 HL: Probe, Materials, Hardness Unit RAN (?): Range AVE: Average value STD (?): Standard Deviation E95 (?): Mean 95% Confidence Intervals (Standard Deviation) SKEW (?): Skewness KUPT: Kurtosis S95H (?): Standard Deviation, 95% Confidence Intervals Upper Limit, S95L: Standard Deviation 95% Confidence Intervals Lower Limit Uniform-DIST.: Not refuse (95%) (?): Uniform distribution: Not refuse (95%) Normal or Uniform: Not refuse (95%): normal distribution or uniform distribution: Not refuse (95%)
Starting: Press the button on top of the impact device to release the locked impact body to complete the measurement. When one measurement is finished, the measured hardness value and related parameters will show on LCD. During the testing process, the probe, work-piece and body must be stable. 7.26.2 Measuring with wireless probe (Optional) Loading the wireless probe Hold the impact device with left hand while push the loading tube with right hand toward to the end.
8 Maintenance and Repair Do your best to avoid shock, heavy dust, damp, strong magnetic field, and oil stain. 8.1 Maintenance of Impact Devices Impact devices do not require any particular care other than periodic cleaning of the impact body and the guiding tube after performing approximately 1000-2000 tests.
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The main interface of the software is a standard windows form, containing the title bar, menu bar and toolbar. Please note: After running the software, click the "Connect" from the toolbar to create connection between PC and tester. If it is connected by 2.4G/Bluetooth, please click “Is Wireless” option in the right Summary Bar first, then click “Connect”...
9 Optional Accessories Support Rings for Impact Device D Part designation and dimensions: Suitable for the following test surfaces Φ 19.5×5.5mm R≥60mm plane cylindrical hollow-cylindrical spherical hollow-spherical Φ 13.5×5.5mm R≥30mm plane cylindrical hollow -cylindrical spherical hollow-spherical Z 10-15 20×20×7.5mm R 10mm-15mm cylindrical Z 14.5-30 20×20×6.5mm...
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9.1.1.2 Power off Press the power switch (left button) and hold down for 3 seconds, then the power is off. The status indicator light turns off. 9.1.1.3 Feeding Paper Press the paper feed button (right button), the printer start feeding paper. If release the button, then stop feeding paper.
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