50-520 Leeb Hardness Tester User`s Manual
Contents
1. N N N N N NG 1 Main unit 2 3 LCD display 4 Socket of RS232 5 Socket of impact device 6 Impact device 7 Label 8 Battery cover 2 1 1 D Type Impact Device 1 2 3 4 5 6 7 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 DC DL D 15 E G 2 2 Main Screen Below is the main display screen m Battery Info gt m AVE amp HS AVE 00000 CH NG Measured Value Vu Hardness Scale N Impact Times NV V WEE NYAN Direction 2 VIT C el lt gt mi NDK 2 Material Instruction of the Main Display Screen Material The present presetting material Impact direction The present impact direction Hardness scale Hardness scale of the present measured value Battery information Showing the rest capacity of the2. GE NE KR SARA RE 17 Back WG NG Pep Ga Nn Ag a EA a a a BA kn 17 2410 ANUNG OW Ci ic d aba 17 SAT Battery Repldce a Me dots 17 5 12 Conne cite casio da an aan 18 Error Gode Refere N Ongpin oir 18 6 Maintenance amp 19 6 l Impact Device Maifite ance ERR REEL ON FERENT Kh 19 6 2 Instrument Maintenance Pro stam d 19 6 3 Fault Analysis amp Evacuation ot tee too erede pto Fee anan eue Nu condo ena naen 19 6 4 Notice of Transport and Storage 1 8 1 1 2 2 24020 4 0400000000000000000004 19 mimic BP e reins care na 20 dk 20 NK E Naah 21 Table aaa anaa Na 22 HET x 23 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 seven impact devices are available for special application Automatically iden
3. ieasumaxX wo MeasumaxX ve 50 520 Leeb Hardness Tester User s Manual WWW measumax com 3 RR D LUE UU RT 3 12 Main Application amp Testing Range soe onte pls A he nens ade ae ne aestu 3 1 21 Wat A oo eco En n eto aede OR ee PUER aaa a em Dn Iu Ch edd 3 L2 Tesine toc cio agak istae Loci o adus 3 1 3 Technical oso oo teo soe to a E Go e E oe a aM Ka EEE ota E E a 4 I CONT SUT AG ON ois RT I Ba A 5 CODOIHODS Da aa a 5 2 Structure Feature Testing 6 PN ME D DL 6 Ie 6 2 1 2 Different Types Of Impact De VIee uu 7 naa A ag on cet gre Lancia aaa niii 7 2 DIREC PAG TIS TIN ONS a a aaa ag a ang aan 8 2 Hardness Testine Principle i 9 SODA ANON n 9 3 1 Instrument Preparation and Inspection 4 2 222002012000000000000000003000000
4. 35 8 30 6 99 5 99 3 102 1 102 6 96 8 204 198 20 7 tool steel 46 5 Stainless steel FIERE 7 e __ __ NT To RTI HV ECCE Nodular cast p ES iron o Cast 248 227 23 8 y 84 6 85 0 E 5 BRASS copper 40 173 95 3 BRONZE copp uus alloys Wrought copper HB 4 ascia 315 alloys 20 2 ve 3 Ced 500 70 1 Tre JANAH 4 500 750 704 1980 6 CrMosed 50 78 721 4076 KANE 50 70 755 1999 9 Supersrenghste 630 800 1980 2082 21 Table 3 Impacting energy oa 11mJ E E Test tip hardness 1600HV 1600HV 1600HV 1600HV 5000HV Dia Test tip 3mm 3mm 3mm omm 3mm Material of test tip Tungsten Tungsten Tungsten Tungsten synthetic carbide carbide carbide carbide diamond Impact device diameter Impact device length Impact device weight 509 hardness of 940HV 940HV 1000HV 650HB 1200HV sample Mean roughness value 4 64 1 6u 0 4u m 6 3u m 1 6u of sample surface Ra Min weight of sample Measure directly gt 5kg Need support firmly 2 5kg Need coupling tightly 0 05 2 0 02 0 5kg 0 5 0 05 2kg 2kg Min thickness of sample Coupling tightly omm omm 1mm 10mm omm Min layer thickness for surface hardening gt 0 8mm 2 0 8mm gt 0 2mm g
5. are needed as the power source After several hours usage of the batteries the battery symbol on the screen will be shown as The more of dark part indicates the more close to fill When the battery capacity runs out the battery symbol will be shown as i land will begin to flash When this occurs the batteries should be replaced by a new pair Pay attention to the polarity of the batteries Please take out the batteries when not working during a long period of time 5 12 Connecting to a Computer The Instrument is equipped with RS232 serial port Using the accessory cable The cable and following referred software are optional parts the gauge has the ability to connect to a computer or external storage device Measurement data stored in the memory of the gauge can be transferred to the computer through the 5232 port Detailed information of the communication software and its usage refer to the software manual 5 13 Error Code Reference Explanation Explanation Battery exhausted Can not print Value out of range 1 EM finished E03 Data already E08 E04 No memory data E09 J o 6 Maintenance 4 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
6. 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 e Release the impact body after use e Any lubricant is absolutely prohibited inside the impact device 6 2 Instrument Maintenance Program e When using standard Rockwell hardness block to testing if all the error is bigger than 2 HRC it may be the invalidation of impacted ball top caused by abrasion Changing the spherical test tip or impact object should be considered e When the hardness tester appears some other abnormal phenomena please do not dismantle or adjust any fixedly assembled parts Fill in and present the warranty card to us The warranty service can be carried on 6 3 Fault Analysis amp Evacuation Fault Appearance Fault Analysis Handling method Battery exhaustion Replace the batteries Impact device cable failure _ Replace the cable 6 4 Notice of Transport and Storage Conditions e Keep it away from vibration strong magnetic field corrosive medium dumpiness and dust Storage in ordinary temperature e With original packing transport is allowed on the third grade highway APPENDIX Table 1 DDC 5 C G E 20 19 3 20 0 i 384 47 7 310 LI Steel and cast 59 1 ae 127 80 638 80 683 90 646 83 663 81 646 83 976 80 937 80 996 84 1042 80 950 ue 322 333 318
7. steps 1 Press the key to activate the data logging function The memory icon will appear 2 Use the 2 key and the e key to select the desired file 3 Press the key to print the selected file This operation will send all the data in current file to the mini printer via RS232 port and print them out 4 Press the key to exit the data logging functions and return to measurement mode 5 8 System Reset Press down the key while powering on the instrument will restore factory defaults The only time this might possibly helpful is if the parameter in the gauge was somehow corrupted 5 9 EL Backlight With the EL background light it is convenient to work in the dark condition Press key to switch on or switch off the background light at any moment as you need after power on 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 Except key press any key could stop the twinkle of LCD screen and stop the operation of power off at the moment While the voltage of the battery is too low the display will show lt 00 gt then power off automatically 5 11 Battery Replacement Two AA size alkaline batteries
8. will preset 5 5 Average Times Setting You could modify average times within the range of 1 to 32 as following 1 Press key in testing state The impact times item will begin to flash 2 Press 2 or 9 key to set the average times to the number you want 3 Press key finally to exit from the operation 5 6 Data logging At most one hundred files FOO F99 one group as one file can be stored inside the gauge By simply pressing the key after a new measurement finishes the screen showing the AVE icon the measured hardness strength group values will be saved to memory The new saved file is appended as the last file of the memory This function provides the user with the ability to view delete a file group previously saved in memory 5 6 1 Viewing stored file Group To view the memory data follow the steps 1 Press the key to activate the data logging function The memory icon will appear It will display the current file name the test parameter of the group data and the mean value of the group If there is no data in the memory it will display lt 04 gt which means no memory data and then return back 2 Use the 2 key to select the desired file to view 3 Press the key to see details of that group data 4 Use the e 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 loggin
9. 00 9 2 2 Inipact Device Selec ana a aa 9 2 9 Preparation or put taU ed nube e 10 ATOSUN Ped 11 aa a or 11 Leu dB a aga 11 2 MOO ACEI aa ag heat dou Na Bi aa Ia e ala a aa a aa a ak naa sih 11 NGO ab ga na aaa a aa kanan 11 NC SUI Oc E mem 11 dad Measured y ap aus 12 4 0 NGLILIG ALOT sasa a 12 sez cie NB II aas a t NG Na 14 Power OmOP eter Ete nda 14 3 2 anan es sa a aa aa aaa gg aaa ak 14 LOS totae Guter bein pe aaa a a pa ana 15 5 Direc MOMS erui uc NAPA Nga aa aaa Ng a ap Na a aaa ag 15 S A VELACES SCID ENG a 15 BENING ajun KI AR ENG Na E I TT 16 Jol Viewin stored Di ERR T aaa aaa ana aaa 16 5 6 2 Clearing selected naa nag Ag amet 16 2 PIBUTSO DOE aga Bagan E oss gagan a iua aos a aa ag aaa baa tasti oic etse mastered 16 DOr OV
10. 2 HLDL 736 40HLDL 766430HLD 15 4 D 15 12 HLD 15 12 HLD 15 544 40 10 15 590 40HLG 5 12 HLG 12 HLG 500 40HLG 725 30HLE 12 HLE 12 HLE 508 40HLE 822 30HLC 7 12 HLC 590 40HLC Measuring range HLD 170 960 HLD C L G E C e Measuring direction 0 360 e Hardness Scale HL HRB HRA HV HS e Display segment LCD e Data memory max 100 groups relative to impact times 32 1 e Working power 2 AA size alkaline batteries e Continuous working period about 100 hours With backlight off e Communication interface RS232 1 4 Configuration Table 1 2 _________ ltem Quantity Remarks ____ Standard 1 Mainunit 1 j D Configuration 3 Standardtestblock 1 5 Small supportring 1 Instrument package case Optional Configuration Cleaning brush 1 1 For use with G type impact device 2 Other type of impact Refer to Table 3 devices and support and Table 4 in rings the appendix DataPro software J14 _ ____ Communication cable 14 2 Micro Printer 141000 16 Printcable ___ 1 20 e 9 H6 1 5 Working Conditions Working temperature 0 40 Storage temperature 30 C 60 Relative humidity lt 90 The surrounding environment should avoid of vibration strong magnetic field corrosive medium and heavy dust 2 Structure Feature amp Testing Principle 2 1 Structure Feature
11. battery Measured value Display present single time measured value without showing average icon or display the present mean value with average icon prompting Hl means over conversion value or measure range LO means lower than conversion value or measure range Impact times Times that have been impacted Average Icon It will appear when showing the mean value of the measured values after reaching the presetting impact times Memory Icon It appears when operating the instrument memory 2 3 Keypad Definitions 2 1 Turn on off the Data Save or Data Turn EL backlight Delete instrument on off Material Hardness Strength Plus or Selection switch Hardness Scale Direction change mu or Down Selection Print data Impact Times set 25 4 logging e Press key to store present group of measured value into memory This operation is only valid after displaying the mean value Press 2 could display single value Press key could switch on of off the background light of LCD Press key to set the impact direction Presse key to change the impact times in one group The impact times item will flash when first pressing the key and then the impact times value will plus or minus when pressing the a or e key Press key finally to exit from changing the impact time process e Press key to change the hardness scale e Press key to change the material Presett
12. ble 4 1 Type of Distance of center of the Distance of center of the Impact Device two indentations indentation to sample edge Not less than mm Not less than mm 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 When reaching the presetting impact times the buzzer will alert a long howl After 2 seconds the buzzer will alert a short howl and display the mean measured value 4 6 Notification e Replacing the impact device must be done during Power off Otherwise the main body could not identify the type of the impact device and it may damage the circuit board of the main body You could not save the current test value if the impact time is less than the presetting times value e Only type D and type DC of impact device have the function of strength test option You can not change the setting to strength testing when using other types of impact device The setting would be set to hardness testing automatically after replacing the impact device whether the setting is hardness testing or not before Not all materials could convert to all hardness scale value The hardness 12 scale is reset to HL automatically after changing the material So select material firstly before changing the hardness scale 5 Detail 5 1 Power On Off Pressl t
13. g 5 6 2 Deleting selected file Group The user may require deleting a file from the instrument memory The procedure is outlined in the following steps 1 Press the key to activate the data logging function The memory icon will appear It will display the current file name the test parameter of the group data and the mean value of the group If there is no data in the memory it will display lt 04 gt which means no memory data and then return back 2 Use the and the e key to scroll to the file that will be deleted 3 Press the key on the desired file It will automatically delete the file and display 4 Press the key at any time to exit the data logging function and return to measurement mode Note Do not shut down the instrument while deleting data It could lead to unpredicted consequence if shutting down while deleting 5 7 Print Report At the end of the inspection process or end of the day the user may require the readings be printed This function is only available with the mini printer Before printing please insert one connection plug of the print cable Optional parts into the socket on the up left of the main body and insert the other plug into the communication socket of the mini printer You can print out the measurement result immediately after each testing process by easily pressing the key If you want to print the data stored in the instrument memory then following is the
14. ing hardness scale recovers to HL automatically after material presetting changed e 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 2 4 Leeb Hardness Testing Principle The basic principle is to use an impact body of certain weight impacts against the testing surface under certain test force then measure the impacting velocity and the rebounding velocity of the impact body respectively when the spherically test tip is located 1mm above the testing surface The calculation formula is as follows HL 1000xVB VA Where HL Leeb hardness value VB Rebounding velocity of the impact body VA Impacting velocity of the impact body 3 Preparation 3 1 Instrument Preparation and Inspection Verification of the instrument is by using standard test block The error and repeatability of displayed value should be within the regulation of Appendix table 2 The instrument and impact device must be calibrated using a standard hardness block before use as the first time or having not been used for a long time or having reset the instrument system Press key meanwhile pressing down the key to power on the system Then the user calibration screen shows as left below Test for 5 points on the standard ha
15. o 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 After pausing for several second the screen will exit and enter the main display screen as following J Direction Material NO The instrument can be turned off by pressing the key while it is working The tool has a special memory that retains all of its settings even when the power 15 off 5 2 Material Setting Press key to change the material to the one you want to preset Hardness scale recovers to HL automatically after material presetting changed Please select material firstly then select hardness scale In hardness testing you can select the material among the following materials Steel and Cast Steel Cold Work Tool Steel Stainless Steel Gray Cast Iron Nodular Cast Iron Cast Aluminum Alloys Copper Zinc Alloys Copper Aluminum Alloys Wrought Copper and Wrought Steel The relationship between the material number displayed on the instrument screen and the material is as follows Table 5 1 O Steel and cast steel 5 ______ Cast aluminum alloys 1 ______ Cold work tool steel 6 _____ Copper Zinc alloys Stainless steel Co
16. pper Aluminum alloys 2 Wrought copper Nodular castiron 9 _____ Wrought steel In strength testing the following materials are selectable Mild Steel High Carbon Steel Cr Steel Cr V Steel Cr Ni Steel Cr Mo Steel Cr Ni Mo Steel Cr Mn Si Steel Super Strength Steel and Stainless Steel relationship between the material number displayed on the instrument screen and the material is as follows Table 5 2 O O Cr Mo stat High carbon steel 6 CrNiMostel ___ 1 7Y Cr Mn Sisteel ___ 2 3 _____ steel 8 Super Sono steel 14 Cr Ni steel _____ Stainless steel 5 3 Hardness Strength testing Press key to switch between hardness testing and strength testing Ob 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 In hardness testing Press key to change the hardness scale The supported hardness scale includes HL HV HB HRC HS HRB and HRA Note e only displays the valid hardness scale the present selected impact device and material It would not display the hardness scale which is not valid Please select material firstly then select hardness scale e Presetting hardness scale recovers to HL automatically after presetting material is changed 5 4 Impact Direction Setting Press the key to move to the impact direction that you
17. r using other method locking the impact body 4 3 Localization Press the impact device supporting ring firmly on the surface of the sample the impact direction should be vertical to the testing surface 4 4 Testing Press the release button on the upside of the impact device to test The sample and the impact device as well as the operator are all required to be stable now The action direction should pass the axis of the impact device Each measure area of the sample usually need 3 to 5 times of testing operation The result data dispersion should not more than mean value 15HL The distance between any two impact points or from the center of any impact point to the edge of testing sample should conform to the regulation of Table 4 1 f want accurate conversion from the Leeb hardness value to other hardness value contrastive test is needed to get conversion relations for the special material Use inspection qualified Leeb hardness tester and corresponding hardness tester to test at the same sample respectively For each hardness value each measure homogeneously 5 points of Leeb hardness value in the surrounding of more than three indentations which need conversion hardness using Leeb hardness arithmetic average value and corresponding hardness average value correlative value respectively make individual hardness contrastive curve Contrastive curve at least should include three group of correlative data Ta
18. rdness block It would display the average measured value after fr TT measuring 5 times Press 9 0 mm T key to change to its nominal value Press key to confirm the calibration finally Or press the key to cancel the calibration Range of adjustment 30HL The measurement parameters including the material setting the hardness scale and the impact direction can t be changed during calibration Note To calibrated the hardness tester test using standard test block downward and vertically 5 times The arithmetical average value is then compared with the value on the test block If the value exceeds the standard value then use the function key to adjust the calibration 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 Too big roughness of the being measured surface could cause error So the surface of the sample to be measured must appear metallic luster smoothing and polish without oil stain Support of test sample Support is no necessary for heavy sample Medium weight parts must be set on the smoothing and s
19. rical inside surface SR16 5 SR30 For testing cylindrical outside 12 UN NN surface radius adjustable R10 23 N K14 5 30 WWW Ineasurmax com
20. t 1 2mm 2 0 8mm oize of tip indentation Hardness Indentation 0 54mm 0 54mm 0 38mm 1 03mm 0 54mm 300HV diameter Depth of 24u m 24u m 12u m 53u m 24u m indentation Hardness Indentation 0 54mm 0 54mm 0 32mm 0 90mm 0 54mm 600HV diameter Depth of 171 m 17u m 8 41u m 171 m indentation Hardness Indentation 0 35mm 0 35mm 0 35mm 0 35mm 800HV diameter Depth of 10u m indentation i DC Test hole C Test G Test E Test pan awe or hollow small light large thick super high device cylindrical thin parts heavy and hardness DL Test reentran and surface rough material slender narrow t surface of hardened surface steel groove or hole layer fum 10 m 22 Table 4 Sketch non conventional Supporting ring 1 710 15 For testing cylindrical outside surface R10 R15 714 5 30 For testing cylindrical outside surface 14 5 R30 725 50 For testing cylindrical outside surface R25 R50 HZ11 13 For testing cylindrical inside surface R11 R13 H712 5 17 For testing cylindrical inside surface 12 5 R17 H716 5 30 For testing cylindrical inside surface R16 5 R30 K10 15 ys For testing spherical outside surface SR10 SR15 For testing spherical outside surface SR14 5 SR30 HK11 13 For testing spherical inside surface SR11 SR13 0 HK12 5 17 lt 2 For testing spherical inside surface SR12 5 SR17 1 16 5 30 For testing sphe
21. table plane The sample must set absolutely equability and without any wobble Curved surface The best testing surface of sample is flat When the curvature radius R of the surface to be tested is smaller than 30mm D DC D 15 C E and DL type of impact device and smaller than 50mm G type of impact device the small support ring or the shaped support rings should be chosen The sample should have enough thickness minimum thickness of sample should conform to Table 3 For the sample with hardened layer on surface the depth of hardened layer should conform to Table 3 Coupling Light weight sample must be firmly coupled with a heavy base plate Both coupled surface must be flat and smooth and there is no redundant coupling agent existing The impact direction must be vertical to the coupled surface When the sample is a big plate long rod or bending piece it can be deformed and become unstable even though its weight and thickness is big enough and accordingly the test value may not be accurate So the sample should be reinforced or supported at its back Magnetism of the sample itself should be avoided 4 Testing Program 4 1 Start Up e Insert the plug of the impact device into the socket of impact device on instrument e 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 o
22. tify the type of impact devices Test at any angle even upside down Direct display of hardness scales HRB HRC HV HB HS HL Large memory could store 100 groups Relative to average times 32 1 information including single measured value mean value impact direction impact times material and hardness scale etc Battery information showing the rest capacity of the battery User calibration function ooftware to connect to PC via RS232 port Micro printer support Compact plastic case suitable for use under poor working conditions Continuous working period of no less than 100 hours with two alkaline batteries AA size Auto power off to save energy Outline dimensions 150mmx74mmx32 mm Weight 245g 1 2 Main Application amp Testing Range 1 2 1 Main Application Die cavity of molds Bearings and other parts Failure analysis of pressure vessel steam generator and other equipment Heavy work piece The installed machinery and permanently assembled parts Testing surface of a small hollow space Material identification in the warehouse of metallic materials Rapid testing in large range and multi measuring areas for large scale work piece 1 2 2 Testing Range Testing range refer to Table 1 and Table 2 in the Appendix 1 3 Technical Specifications e Error and repeatability of displayed value see Table1 1 below Table 1 1 HAH 5 760 30HLDC 6 HLDC 6 HLD 530 40HLDC 10 HLDC 10 HLD 878 30HLDL 3 D 12 HLDL 1
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