Related Manuals for MRC MH180
Summary of Contents for MRC MH180
- Page 1 MH180 Leeb Hardness Tester User’s Manual PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com MRC.7.14...
-
Page 2: Table Of Contents
1 Overview .........................3 1.1 Advantages............................3 1.2 Main Application &Testing Range ....................3 1.2.1 Main Application ..........................3 1.2.2 Testing Range..........................3 1.3 Technical Specifications ........................4 1.4 Configuration .............................4 1.5 Working Conditions ...........................5 2 Structure Feature &Testing Principle ................5 2.1 Structure Feature..........................5 2.1.1 D Type Impact Device ........................6 2.1.2 Different Types of Impact Device....................6 2.2 Main Screen ............................6 2.3 Keypad Definitions ..........................7... - Page 3 6.1 Impact Device Maintenance ......................16 6.2 Instrument Maintenance Program....................16 6.3 Fault Analysis & Evacuation ......................16 6.4 Notice of Transport and Storage Conditions..................16 APPENDIX ........................17 Table 1 ..............................17 Table 2 ..............................18 Table 3 ..............................18 Table 4 ..............................19...
-
Page 4: Overview
1 Overview 1.1 Advantages Wide measuring range. Based on the principle of Leeb hardness testing theory. It can measure the Leeb hardness of all metallic materials. Large screen LCD, showing all functions and parameters. With EL background light. ... -
Page 5: Technical Specifications
1.3 Technical Specifications Error and repeatability of displayed value see Table1-1 below. Table 1-1 Type of Hardness value of Leeb Error of displayed Repeatability impact device standard hardness block value 760±30HLD ±6 HLD 6 HLD 10 HLD 530±40HLD ±10 HLD 760±30HLDC ±6 HLDC 6 HLD... -
Page 6: Working Conditions
Optional Cleaning brush (II) For use with G Configuration type impact device Other type of impact Refer to Table 3 devices and support and Table 4 in the rings appendix. DataPro software Communication cable Micro Printer Print cable 1.5 Working Conditions Working temperature：... -
Page 7: D Type Impact Device
2.1.1 D Type Impact Device 1 Release button 2 Loading tube 3 Guide tube 4 Coil unit 5 Connection cable 6 Impact body 7 Support ring 2.1.2 Different Types of Impact Device D+15 2.2 Main Screen Below is the main display screen： Average Icon Memory Icon Battery Info... -
Page 8: Keypad Definitions
Material No Instruction of the Main Display Screen: ： The present presetting material. Material ： The present impact direction. Impact direction ： Hardness scale of the present measured value. Hardness scale ： Showing the rest capacity of the battery. Battery information ：... -
Page 9: Leeb Hardness Testing Principle
Press key to switch between hardness test and strength test. Only D and DC type of impact device has the function of strength testing. So hardness testing is the only selection if the impact device is not D or DC type. Press key to print out the measured values after measurement. -
Page 10: Impact Device Selection
3.2 Impact Device Selection Refer to Appendix Table 1 and Table 3 for selection of impact device. 3.3 Preparation of the Sample Surface Preparation for sample surface should conform to the relative requirement in Appendix Table 3. In the preparation processing for sample surface, the hardness effect of being heated or cold processing on the surface of sample should be avoided. -
Page 11: Testing Program
4 Testing Program 4.1 Start-Up Insert the plug of the impact device into the socket of impact device on the instrument. Press the key，now power is on. The instrument is in working mode. 4.2 Loading Pushing the loading-tube downwards until contact is felt. Then allow it to slowly return to the starting position or using other method locking the impact body. -
Page 12: Read Measured Value
Type of Impact Distance of center of the Distance of center of the Device two indentations indentation to sample edge Not less than (mm) Not less than (mm) D、DC D+15 4.5 Read Measured Value After each impact operation, the LCD will display the current measured value, impact times plus one, the buzzer would alert a long howl if the measured value is not within the valid range. -
Page 13: Operation Detail
5 Operation Detail 5.1 Power On/Off Press to power on the instrument. Be sure to plug in the impact device before powering on. The system would automatically detect the type of the impact device during power up, and would display this information on the screen. Users should pay attention to the probe type displayed on the screen. -
Page 14: Hardness/Strength Testing
High carbon steel Cr-Ni-Mo steel Cr steel Cr-Mn-Si steel Cr-V steel Super strength steel Cr-Ni steel Stainless steel 5.3 Hardness/Strength testing Press key to switch between hardness testing and strength testing (бb) . Note: Only D and DC type of impact device has the function of strength testing. So hardness testing is the only selection if the impact device is not D or DC type. -
Page 15: Clearing Selected File/Group
3) Press the key to see details of that group data. 4) Use the key and the key to view each single measured data in that group while viewing details. 5) Press the key to return to previous screen at any time during data logging. 5.6.2 Deleting selected file/Group The user may require deleting a file from the instrument memory. -
Page 16: Auto Power Off
Since the EL light will consume much power, turn on it only when necessary. 5.10 Auto Power Off The instrument features an auto power off function designed to conserve battery life. If the tool is idle (neither measuring nor any key operation) for 5 minutes, it will turn itself off. Before powering off, the LCD display of the instrument will continue flashing for 20 seconds. -
Page 17: Maintenance & Servicing
6 Maintenance & Servicing 6.1 Impact Device Maintenance After the impact device has been used for 1000--2000 times, please use the nylon brush provided to clean the guide tube and impact body. When cleaning the guide tube, unscrew the support ring first, then take out the impact body, spiral the nylon brush in counter-clock direction into the bottom of guide tube and take it out for 5 times, and then install the impact body and support ring again. - Page 18 APPENDIX Table 1 Impact device Material Method D/DC D+15 20～ 19.3～ 20.0～ 20.6～ 22.4～70.7 68.5 67.9 69.5 68.2 38.4～ 47.7～ 37.0～ 99.6 99.9 99.9 Steel and cast 59.1～ 61.7～88.0 steel 85.8 127～ 80～638 80～683 90～646 83～663 81～646 83～976 80～937 80～996 84～1042 80～950 32.2～...
- Page 19 Table 2 Material Strength σ (MPa) Mild steel 350～522 374～780 High-Carbon steel 500～710 737～1670 Cr steel 500～730 707～1829 Cr-V steel 500～750 704～1980 Cr-Ni steel 500～750 763～2007 Cr-Mo steel 500～738 721～1875 Cr-Ni-Mo steel 540～738 844～1933 Cr-Mn-Si steel 500～750 755～1993 Super strength steel 630～800 1180～2652 Stainless steel...
- Page 20 surface hardening ≥0.8mm ≥0.8mm ≥0.2mm ≥1.2mm ≥0.8mm Size of tip indentation Hardness Indentation 0.54mm 0.54mm 0.38mm 1.03mm 0.54mm 300HV diameter Depth of 24μm 24μm 12μm 53μm 24μm indentation Hardness Indentation 0.54mm 0.54mm 0.32mm 0.90mm 0.54mm 600HV diameter Depth of 17μm 17μm 8μm 41μm...
- Page 21 For testing spherical outside K14.5-30 surface SR14.5～SR30 For testing spherical inside HK11-13 surface SR11～SR13 For testing spherical inside HK12.5-17 surface SR12.5～SR17 For testing spherical inside HK16.5-30 surface SR16.5～SR30 For testing cylindrical outside surface,radius adjustable R10～∞...
Need help?
Do you have a question about the MH180 and is the answer not in the manual?
Questions and answers