OPERATING and INSTRUCTIONS MANUAL DUROLINE - MMICROHARDNESS TESTER 2 INDEX A.DESCRIPTION 1.General........................................................................................................................ 3 2.Principle ...................................................................................................................... 4 2.1. Vickers Hardness .................................................................................................. 4 2.2. Knoob Hardness ................................................................................................... 4 3.Outstanding Features ................................................................................................. 5 4.Technical Data ............................................................................................................. 6 5. Warranty .................................................................................................................... 7 B.INSTALLATION and SET-UP 1. Unpacking & Checking Contents of Packing .............................................................. 7 2.Installation and Set-Up ............................................................................................... 8 2.1. Electrical Installation ............................................................................................. 9 2.2. Assembling & Preparing the Equipment ............................................................... 9 C.CONTROL PANEL (TOUCH SCREEN) 1.Control Button Functions ............................................................................................ 11 D.OPERATION......................................................................................................................... 13 1.Vickers Hardness Testing ............................................................................................ 15 2.Knoob Hardness Testing ............................................................................................. 16 E.SERVICE AND MAINTANENCE ............................................................................................. 17 Adjusting Indentation Center ............................................................................................. 17 F.ACCESSORIES..................................................................................................................... 19 3 A.DESCRIPTION _______ Fullyunderstandthisoperationmanualbeforeusingthisproducttomaintaintheuser'ssafetyandto improve the working efficiency an making good use of its full performance. 1.General The Vickers hardness test method has two significant advantages as shown below: Similarindentationsandconstanthardnessvaluesareobtained,regardlessofmagnitudesofloads applied, as far as test specimens are homogeneous. Undividedhardness measuringispossiblefrom extremelysofttoextremelyhardmaterialsusingthe same scale. Withtheseadvantages,theDUROLINE-Mmicrohardnesstesteristhemostsuitablefortestingmetal structuresincludingsmallorminuteparts,metalfoils,finedrawnwires,thinhardenedlayersand electroplated layers as well as non-metallic materials such as glass, jewels, and ceramics. In particular, it isindispensabletohardnessmeasurementswhileobservingthemetalstructures,testinginternal hardnessdistributionifinduction-hardenedorcarbonizedmaterials,etc.So,themicrohardnesstester be used widely in the aviation, automobile, shipbuilding, metallurgy, nonferrous metal, railway, machine tool etc. Inadditiontotheabove-mentionedVickershardnesstests,MicrohardnesstestsincludetheKnoop hardness test method using a Knoop indenter having a different shape. The Knoop Microhardness tester is suitable for continuous measurement at point quite close to each other or measurement of extremely thin plates that are hardly be measured by ordinary Vickers hardness testers. Fig. 1. DUROLINE - M 4 2.Principle 2.1. Vickers Hardness The Vickers hardness denotes to a value obtained from a test load, applied to a specimen to form an indentation on it with a square-based pyramidal diamond indenter which has face angle of 136. The surface area of the permanent indentation found from its diagonal length, using the following equation. 2 22dF1891 . 0dFsin 2102 . 0SF0.102 HV = = =u Where, HV: Vickers hardness F: Test load(N) S: Surface area of an indentation (mm2) d: Average diagonal length of an indentation (mm) u: Face angle of the pyramidal diamond indenter () CAUTION! If the unit of a test load F is kgf, the Vickers hardness is calculated as follows: ( )2 22854 . 1 2dFdSinFSFHV = = =u 2.2. Knoob Hardness The Knoop hardness denotes a value obtained from a test load, applied to a specimen to form an indentation on it with a rhombic cross pyramidal diamond indenter and vertically opposite edge angles of 172.5 and 130 .The projection area of the permanent indentation found from its longer diagonal length, using the following equation: 2 2451 . 1 102 . 0 102 . 0dFCdFAFHK = = = 5 Where,HK: Knoop hardness F: Test load (N) A: Projected area of an indentation (mm2)C: Indenter constant 0.07028d: Longer diagonal length of an indentation (mm) CAUTION! If the unit of a test load F is kgf, the Knoop hardness is calculated as follows:2 22 . 14dFCdFAFHK = = = 3. Outstanding Features Advanced turret. -Thenewturretmechanismenablesyoutoobservethespecimenareaofspecimenwithupto3 object lenses. -Autoturretprovideyouthequickandeasysequencewithoutrotatingtheturretmanually.By pressingthestartbutton,anautomaticturretdevicewillperformaseriesofloadingoperations. Theobjectlensformeasuringcomesautomaticallybacktothecentralpositionaftermaking indentation. - Manual turret rotating is also capable. Indentationobservedinthemicroscopeisrotated90degreesbysteppingmotorautomatically without rotating the microscope manually. + Dwell time can be selected easily by control panel from 5 to 99 second + Easily operation to increase or decrease brightness in 16 steps. + Stored measuring data ( Data memory: max. 99 test datas) 6 +Connectingaprintertoprinttestingreport.Bothofmeasuringdataandstatisticdata:meanvalue, max. value, min. value, dispersion, standard deviation. + Expansion to further semi-Auto system. 4.Technical Data *TEST LOADgf : 10 25 50100200300500 1000 mN:98.07245.2490.3980.71961 2942 49039807 LOADING MECHANISMAutomatic loading and releasing method 50m / s DEWELL TIME5 ~ 99s TURRET MECHANISMAutomatic OBJECT LENS 40x, 10x(Option: 20x, 80X) MAGNIFICATION OF MICROSCOPE For measurement: 400x(Objective 40 x Eyepiece 10) For observations: 100x(Objective 10 x Eyepiece 10) MEASURING MICROSCOPEElectronic (Auto D1/D2) Max. measuring length 200m ( In case of 400x ) Min. measuring unit0.1m MAX. HEIGHT OF SPECIMEN90mm MAX. DEPTH OF SPECIMEN110mm MEASURING HARDNESS SCALEHV, HK X - Y STAGEManual X - Y STAGE Dimensions110mm x 110mm Max. Movement25mm x 25mm Min. Micro graduation1 / 100mm PRECISION VISE50mm (Max. opening) LIGHT SOURCE12V 50W OPTICAL FUNCTIONAdjustable Illuminator PRINT OUTPUTMeasured data and statistic data (Max. value, min. value, mean value, range, standard deviation) ACCURACYConform to: JJG260-91,JIS B-7734, ASTM E-384 and ISO 146 PHOTOGRAPHIC DEVICECapable to mount photographic device (Option) 7 DIMENSIONSW 190mm X D 430mm X H 520mm WEIGHT42kg POWER SUPPLY220 V, 50/60 Hz. 1 ph. 5.Warranty The DUROLINE M is guaranteed against defective material or workmanship for a period of 12 months from thedate ofreceiptbythecustomer orlatest18monthsaftertheshippingdate.Warrantyisnot valid if inspection shows evidence of misuse or unauthorized repair. Warranty covers only replacement of defective materials. In case this unit must be returned to our factory for warranty service please ask for prior authorization and include the following details: Serial Number of the unit, Invoice number and date. Transport costs belong to the customer. B. INSTALLATION & SET UP _______ 1.Unpacking & Checking Contents of Package Carefullyunpackandcheckcontentsofthepackage.Ifanycomponentsaremissingordamaged, savethepackinglistandmaterialsandadvisethecarrierandMetkonInstrumentsLtd.ofthe discrepancy. 8 WARNING!TheDUROLINE-Mweighs42kgandbesurethatthereareenoghpeople(at least1)to safely lifttheunit from the shipping carton. Follow the steps on1.1 which the unpacking procedure is described step by step with photos. 2.Installation and Set-Up CAUTION!Followapprovedproceduresandtakeallnecessarypreventivesafetymeasures when lifting and installing this equipment. Improper lifting can result equipment damage. FRONT VIEW Fig.2. Unpacking 9 Fig.3. 2.1. Electrical Installation Beforemaking electricalconnections, checkthatthevoltageandfrequencystated onthespecification platecorrespondtothelocalvoltageandfrequency.Checkthatthevaluesfor1-phasevoltage,is compatible with the intended electrical supply before installation. ATTENTION! Connect the unit to the grounded mains voltage. WARNING! Electrical Shock Hazard. A qualified electrical technician should perform optional hard wiring and electrical maintenance.1.Front panel 2.Elevation table handle 3.Holder column (screwed) 4.X-Y table 5.10X-40X objective 6.Vickers Indentor 7.Right measurement knob 8.Left measurement knog 9.Read button 10. 10X oculer11. Camera adapter hole 10 -Disconnect the power supply before making any electrical adjustments. -Make sure that the supply voltage and frequency is correct. Check the values from the back thin metal plate. Voltage / FrequencyOperational Power RangeFuse Rating115 V, 50/60 Hz. 1 ph.110 - 120 V 230 V, 50/60 Hz. 1 ph.220 - 240 V 2.2. Assembling and Preparing the Equipment InstalltheMicrohardnesstesteronaniron,concreteorwoodenbaseinaplacewithoutheavy vibration and dust as possible. The distance shall be more than 200mm between the machine and the wall. Working environment Temperature: 20C 8C Humidity: s 65% After placing the tester on a stable table,screw4 leveling legs into the female screw holes under the tester and level the tester by using the small level which is included as a standard accessory. Removethecapfromcameraadapterholeandtakethetopcoveroff,thentakethepadout. Remove weight fixing rubber and loosen the loading lever fixing screw. Then put the weight kit to the weight saucer one by one from light to heavy. Fig.5. Place the reading unit and insert the data cable as Fig.6. and Fig.7. 11

Fig.6. Fig.7. Loosen the 2 transportation screws (which are indicated with red arrows Fig.8.) upto the surface of the black unit. You may do so by moving the weight up and down by turning the load selection dial. Fig.8. Thenputthetopcoverbackon.Pleasemakesurethat2objectlensesarenotloosenedby transportation.Plugthepowercabletotheconnectorandturnonthemainpowerswitch.Now, tester is ready, however please confirm that the turret and elevation screw are moving smoothly. Put the printer to the table and plug the cable to the connector from the tester to printer. Power supply: Single phase AC 220V 10V / 50HZ Remove the black cap from right side of the istrument. Insert the black light filter unit into this hole Fig.9. You can find the black light filter unit from accessories bag. Selectthe10Xobjectiveor40Xobjective.MakeabetterlightviewasFig.10withthehelpof adjusting screws Fig.11 Fig.9.Fig.10Fig.11 Remove the black light filter and close the cap. 12 After placing the tester on a stable table, screw 4 levelling legs into the female screw holes under thetesterandlevelthetesterbyusingthesmallspirit-level(Picture11.)whichisincludedasa standard accessory.

Fig.12 Fig.13 C.CONTROL PANEL_______ Fig.14 DUROLINE - M Touch Screen HMI touch screen controls increasing the productivity, sample consistency and operator comfort. 13 1.Control Button Functions 1 : D1 (Diagonal of the indentation)2: D2 (Diagonal of the indentation) 3: Test Mode (HV/HK) 4: Conversion: HRC / 30N / HV / HK / HBS 5: Measurement Count 6: Set Zero : Set D1/ D2 to 0. 7: Delete the last measurement 8: Light down 9: Light up 10: Start a test cycle Objective Indenter Loading Dwelling Release Objective 11: Turret Rotation 12: Camera Port 13: Dwell Time (1-65535 second) 14: Test Load: gF / N / KgF / mN 15 : Setup Mode 16: Data Edit Mode 17: Time 1 2 3 4 5 6789 10 12 11 13 14 1516 17 14 D.OPERATION _______ After installation, please carry out the operation as shown below. 1.Check the power supply. The working condition should be Single phase AC 230V 50/60 Hz. 2.Turnthepower onbypressingthepowerswitchontherearpanel, then thelightison,andthe turret well rotates to 40X objective position automatically. 3.Check the display of "COUNT" whether is "00". When it isn't, please press "ZERO". 4.Rotate the elevation table handle slowly to bring the specimen surface into focus. 5.When you elevate your specimen, please be careful not to damage the surface of lens by hitting your specimen. 6.Adjust the brightness by pressing the button "+" or "-" on the control panel. 7.Set the dwell time by pressing the button "+" or "-" on the control panel (5~99s, 1s/ once ). 8.Exchange the testing method between HV and HK by pressing the HV/HK button (exchange the HK indenter for HK measuring). 9.When you have focus on your specimen. Please adjust your vision by turning the eyepiece to get a clear view of the 2 measuring lines.(Fig.15) Vision differs for each personnel; please take this step every time you have a different operator. CAUTION! If you could not get a clear view of the 2 measuring lines, the results could not be correct. (Fig.16) Fig.15Fig.16 10.Beforeyoutakeanyactualreadingoftheindentation,youmayneedtoset"0"foryour measuring lines. a.Bringtwolinesjusttouchtheinnerlinetoeachotherbyrotatingthemeasuringline adjusting knob.(Fig.17) 15 Fig.17Fig.18 11.Move the specimen to the position what you need by moving the X-Y stage. 12.Press start switch on the front panel then tester will take the below test sequence automatically: 40x objective lens Diamond indenter Load application Dwell time Load release 40x object lens 13.Then you can see an indentation on your specimen at the center of the view field. After that, do the measurement through the eyepiece. 14.Measure the diagonal length of the indentation as follows: Alignment Knob for Adjusting the Measuring Lines 10X Viewer Read Button Right Measuring Line Adjustment Knob 16 1.Vickers hardness measurement Measure the D1 and D2 dimension. Turn the left side knob of the measuring microscope to take the inner edge of the left measuring line to touch the left corner of the indentation. Turn the right side knob of the measuring microscope to take the inner edge of the right measuring line to touch the right corner of indentation. Press the read button, then the D1 dimension will be displayed in the D1 window on the front panel, then the indentation be rotated 90 degrees automatically Use the same procedure to take the inner edge of the bottom and top line to touch the bottom and top corner of indentation, press the read button, then the D2 dimension and HV value will be displayed in the front panel automatically. 17 2.Knoop hardness measurement You can obtain the Knoop hardness value by using the Knoop diamond indenter, which will be supplied as option. Knoop hardness value will be obtained from D1 dimension only. To change a diamond indenter for Knoop testing, fix the red point on the side of the indenter to the setscrew. Press the HV / HK button in HK mode for Knoop testing. Use the same procedures to take the inner edge of the left measuring line to touch the left corner of the indentation. Use the same procedures to take the inner edge of the right measuring line to touch the right corner of the indentation. Press the read botton, then the D1 and HK value will be displayed on the front panel automatically. 15.Press the Print switch to print measuring datum and test report. 16.Replace the specimen for new measurement. 18 E.SERVICE and MAINTENANCE _______ (1)It is necessary to check power supply for the instrument before starting. (2)The instrument should be used often. It must be electrified once every week and at least three hours every time if it has not been used for a long time.(3)Since the instrument is one type of optical micro hardness microscope, it should be kept in a room with a certain rage of temperature and humidity. Temperature requirement: 5C_____30C Working requirement: 20C 8C Humidity requirement: s 70 Working requirement: s 65 (4)The instrument should be used in a clean room. In order to protect the surface and the chink from dust, it should be covered when the instrument is not used. (5)The surface should not be cleaned by gasoline and alcohol solvent. It can be cleaned by soap water and wiped with humid or dry cloth.(6)The standard block should be applied with oil after it is used to prevent getting rusty.(7)If the instrument need change workroom, it must be with a package in the moving conditions (Take out weights, tighten a loading fixing screw), and cannot be moved in an unpacked state. (8)Do not touch the eyepiece, objective and optical parts' surface with hand and body. If the lenses need to be cleaned, you can use long absorbent cotton with 50% alcohol and 50% ether mixture to wipe softly. (9) Adjusting indentation center:According to the methods as shown below, the indentation should be at the center of the view and it does not move obviously by rotating the indentation.When the indentation is out of the center and it moves obviously from D1 D2, it can be adjusted as follows. a.Rotate the left knob. Make the left measuring line in the center of the microscope view and make the indicate line of the knob touch with another one. ( Fig. B, Fig. C ) When the indentation of D2D1 change comparatively: Downward: first loosen screw 1,3, then tighten 2. ( Fig D ) Upward:first loosen screw 2, then tighten 1,3. Leftward:first loosen screw 3, then tighten 1. 19 Rightward: first loosen screw 1, then tighten 3. When the difference is slight, you need not loosen the screw, but only tighten the corresponding one. b.When the indentation is out of the center and it does not move obviously from D1 D2, it can be adjusted as follows ( Fig E ): It can be adjusted by loosening the two fixing screws in hole of the body and changing the microscope site between left and right. ( Fig. B )( Fig. C ) Direction of the indentation moving by tighten the screws in clockwise. ( Fig. D ) 20 ( Fig. E ) (10) Replace the light source bulb and adjust the center of light path (A) Replace the light bulb: Disassemble the adjusting knob and the four screws on the body. Pull the adjusting knob to replace a new light bulb. Push it back and screw it clockwise. (B) Adjust the center of a light path: Adjust 3 knobs to take the light bulb going up / down, forward / backward and left / right to make a better light view in the microscope. (11) If the instrument has something wrong, please contact your local official dealer for maintenance. Since the instrument is highly accurate and includes optical, mechanical and electrical tester, the maintenance should be done by your or our own service engineer. F.ACCESSORIES _______ Order Code Accessories for hardness testingGR7902/1 Specimen holder for 25 mmGR7902/2 Specimen holder for 30 mmGR7902/3 Specimen holder for 40 mmGR7902/4 Specimen holder for 50 mmGR7903 Fine specimen holder (Vertical type)GR7904 Fine specimen holder (Horizantal type)GR7905 Precision vise (opening 50mm)GR7906 Object lens 20x and optical kitGR7907 Spare source bulb (10pcs/pk)GR7908/M Vickers diamond indenter for DUROLINE-M GR7908/V Vickers diamond indenter for DUROLINE-LV&DUROLINE-V GR7909/M Knoop diamond indenter for DUROLINE-M GR7910 Standart block HV 700GR7911 Standart block HV 400GR7912 Hand pressGR7913 Manual stage for DUROLINE-M (Max.load:15kgf) GR7914 Manual stage for Vickers(Max.load:80kgf) GR7915 Calibration scale glass