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High-precision wear resistance tester

kaloMAX NT II

Manual

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Summary of Contents for kaloMAX NT II

Page 1: ...High precision wear resistance tester kaloMAX NT II Manual...

Page 2: ...ANING THE SHAFT 9 2 5 SPECIMEN 9 2 6 BALL 9 2 7 AUTOMATIC DOSAGE APPARATUS 9 2 8 FILLING THE CARTIGE WITH ABRASIVE SLURRY 10 2 9 DOSING PARAMETERS 10 2 10 MANUAL DOSAGE WITH A PIPETTE 10 3 TEST EXECUT...

Page 3: ...P 18 5 4 MAIN SCREEN 19 5 5 MENU 19 5 6 MANAGE GRINDING PARAMETERS 20 5 6 1 CHANGE PARAMETERS 20 5 6 2 SAVE PARAMETER 20 5 6 3 LOAD PARAMETER 20 5 6 4 DELETE PARAMETER 20 5 7 CLEAN VALVE 21 5 8 SYSTEM...

Page 4: ...ve slurry is applied onto a 100Cr6 steel ball with a diameter of 30mm This ball is rotating against a specimen see Figure The wear crater should be ground into the layer without breaking through to th...

Page 5: ...nce by means of a high precision wear resistance tester Extensive measurements have been done at the FhG IST to characterize the influence of different climatic conditions temperature and humidity on...

Page 6: ...ST and the quality of every 50ml cartridge is tested A reference layer is provided so you can check the quality at any time 1 4 Place of installation It would be best to place the device in an air con...

Page 7: ...value depends basically on the thickness and wear resistance of the layer to test It is important that the depth of the resultant wear crater is not greater than the thickness of the functional layer...

Page 8: ...rectly It depends on the weight and diameter of the ball the blade angle of the specimen and the distance between specimen and shaft Therefore it is recommended to keep this values constant for a seri...

Page 9: ...e oil fingerprints etc 2 6 Ball The ball must be cleaned with ethyl alcohol The ball has to be free from abrasive slurry A thorough cleaning of the ball is recommended to avoid slipping at the contact...

Page 10: ...d duration must be set Parameters for a drop with a mass of about 35 mg Pressure 0 45 bar Duration 150 ms The pressure is adjusted by a fine setting valve at the rear side of the device The duration c...

Page 11: ...he laser pointer points to the spot on the surface of the specimen where the ball will grind the spherical cap The laser pointer will be switched on automatically when it has reached its final positio...

Page 12: ...can be made The grinding craters should have a minimal distance of 1 2mm 3 4 Aborting a test A test should be aborted when the ball begins to tumble Probably a bit of the abrasive slurry has spread on...

Page 13: ...r the calculation of the wear volume an ideal spherical cap is assumed The crater i e wear volume Vv can be calculated as follows h r 3 h 3 v 2 V where Vv Wear volume m3 h Crater depth m r Ball radius...

Page 14: ...because the source units should be kept recognizable 4 3 Analysis by microscope For an analysis by microscope the diameter of the wear crater has to be measured 4 4 Calculation of the wear coefficient...

Page 15: ...Pressing this key starts the grinding process see chapter 5 3 Start Stop Pressing this key during grinding stops the grinding process see chapter 5 3 Start Stop Otherwise the valve is cleaned see chap...

Page 16: ...case a text input field opens In the upper field highlighted in white called text field hereafter the entered text is shown The previous lines show the characters that can be selected A space is repre...

Page 17: ...aft RPM Grinding path m number of ball revolutions or number of shaft revolutions Dosage time of the abrasive slurry ms Diameter of the grinding ball Furthermore the following basic settings can be ma...

Page 18: ...ll revolutions 13 UB 9200 UB Grinding path 1 2 m 870 m Number of shaft revolutions 20 US 15000 US Grinding ball diameter 12 mm 40 mm 5 3 Start Stop Press START on the main screen to start the grinding...

Page 19: ...n Changing the parameters in the main screen has no effect on the stored parameters If no grinding operation is in progress the valve can be cleaned by pressing the STOP key 5 5 Menu Press ESC when th...

Page 20: ...lue of the parameter can be changed 5 6 2 Save parameter Under the menu item Grinding parameter Save the current grinding parameters can be saved with a chosen name After selection of the menu item a...

Page 21: ...ment is in progress when the STOP button is pressed this causes the measurement to abort 5 8 System settings Selecting System on the menu opens a sub menu with the following sub items Configuration Se...

Page 22: ...alues 5 8 4 Information Under the menu item System Information the system information is displayed This information comprises the device serial number software version number kernel version and file s...

Page 23: ...BAQ GmbH Hermann Schichting Str 14 38 110 Braunschweig Germany Tel 49 5307 95102 0 Fax 49 5307 95102 20...

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