Grinding Wheels

Grin

din

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heels

Diamond grinding wheels withresinbinder,metalbinder,ceramicbinder.

forgrinding:-tungstencarbides-flame-sprayedwearresistantalloys-tungstencarbide/steelcombinations-glass-ferrites

CBN grindingwheelswithresinbinder,metalbinder,ceramicbinder.

forgrinding:-highspeedsteels-hardenedhighspeedsteels-hardened12%chromiumsteel-flame-sprayedwearresistantalloys

Enclosedyouwillfindasheetforeachtypeofwheel.Thedimensionsarenotincludedinthetablesbecausethiscatalogueoffersyouthefacilityofnotingdownthespecificationsofallthewheelsyouuse.

Wehopethatthecataloguewillthusbecomeausefulreferencedocument,specifictoyourrequirements.

TechnodiamantAlmereB.V.Markerkant13-11,1314ALAlmerePOBox1204,1300BEAlmereTheNetherlandsTel:+31(0)36-5343044Fax:+31(0)36-5342636E-mail:[email protected]:www.technodiamant.nl

ForU.S.A.,CanadaandMexico:TechnodiamantU.S.A.Inc.200ValleyRoad,Suite107Mt.Arlington,NJ07856Tel:+1-973-7707220Fax+1-973-7707225E-mail:[email protected]:www.technodiamant.com

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Page

Concentrations for diamond and CBN (incl. table) 3

The effect of concentration 4

Cutting depth for diamond and CBN grinding wheels 5

Permissible cutting depth (incl. table) 5

Comparison table for grit systems 6

Suggestions for the use of diamond wheels for grinding carbide 7

Explanation of wheel symbols 8

Explanation of letters in specifications 8

Wheel types 9 - 26

Contents

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WeusethesameindicationofconcentrationforbothdiamondandCBN,whichcorrespondstotheinternationallyacceptedstandardfor:

concentration100=4.4crt/cm3(1Carat=0.2g)

ThisisusedtoexpresstheweightofDIAMONDorCBNpercm3.BecausetherearealsoindicationsofconcentrationusedforresinbondCBNgrindingwheelswhicharebasedonthegrossweightofnickelcoatedCBNgrains(60%ofthegrossgrainweightconsistingofnickel),thelastcolumnofthetableabovealsoshowstheseconcentrations,precededbytheletterB.

Concentrations for diamond and CBNConcen- tration

25

40

50

75

100

150

175

Percentage volume

Caratsper cm3

6.25

10

12.5

18.75

25

37.5

43.75

1.1

1.76

2.2

3.3

4.4

6.6

7.7

CBN incl. 60 percent by weightnickel coating

B - 62.5

B - 100

B - 125

B - 188

B - 250

B - 375

B - 420

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Concentrations:ThecontentofdiamondorCBNinthegrindingrimisheavilydependentupontheapplication.Generally,whererapidstockremovaloftungstencarbideorhardenedsteelisintended,aconcentrationof75to125isselected.Whenagoodsurfacefinishisdemanded,lowerconcentrati-onsincombinationwithfinerdiamondorCBNpowderarerequired.

Concentrationsofupto150areusedforprofilegrindingwheelsandcylin-dricalwheelswhichhaveasmallcon-tactarea.

NeedlesstosaythatTechnodiamantguaranteesthespecifiedconcentrati-ons.

Grit size:DiamondandCBNgritareavailableinmanysizesandtypes.Thegritsizeisdependentuponthedesiredsurfacefinish.Inaddition,thegritsizealsohasanimportanteffectonthegrindingbehaviourofthewheel.

Asfarasthegritsizeisconcerned,TechnodiamantcomplieswiththeFEPAstandard.Youwillfindacomparisontableforthevariousgritsystemsonpage6inthiscatalogue.

Binders:Technodiamanthasalargenumberofinhousedevelopedbindersavailable.Thetypeofbinderisoftenselectedincombinationwiththetypeofgritandconcentration.Bindersaredividedintometal,resinandceramicbinders.Solidmetalbindersareoftenappliedtogrindglassandceramics,whereasresinbinders,porousmetalbindersandceramicbindersareusuallyusedforgrindingtungstencarbidesandhardenedsteel.

Thefollowingmoreorlessuniver-salbindercodesareoftenusedbyTechnodiamant:

XX WetgrindingofcarbideX2 DrygrindingofcarbideC2 Dryandwetgrindingof

carbideandhardened steel.T2 Dryandwetgrindingof

hardenedsteelwithcylin-dricalwheels.

T3 Dryandwetgrindingofhardenedsteelwithcupwheels.

GS30(GR) Wetgrindingofflatglass.S149 Wetgrindingofoptical

glass.

Ceramicbinder:V-number Wetgrindingof tungstencarbide,HSS,etc.

The effect of concentration

Thedepthofcuttingforoscillatinggrindingwithforcedfeedingisassociatedwiththegritsizeofthewheelandthefinenessrequiredforthesurface.Thedepthofcutmustalwaysbelessthantheprotrutionofthegritfromthebinder.Forasharpgrindingwheeltheprotrutionwillbe1/4to1/5ofthegritsizeatthemost.However,thegenerationofheatmustbeheldwithincertainlimitsaswell.Whendrygrindingwithalargecon-tactareabetweenthewheelandtheworkpiece,thedepthofcut

mustbemuchlessthanwhengrindingwithasmallcontactarea.Forcreepfeedgrindingthegrindingdepthsettingisnotthesameasthedepthofcut,sincethelatterislimi-tedbythespeedofthetable.Specialmetalandresinwearresistantbindershavebeendevelopedforcreepfeedgrinding.Becausethecontactareabetweenthewheelandtheworkpieceisusuallylargeforthisgrindingmethod,propercoolingisofextremeimportance.

Cutting depth for diamond and CBN grinding wheels

Permissible cutting depth

See comparison table for grit systems on page 6

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Grin

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Comparison table for grit systems

m DIN 848 FEPA-STANDARD US-MESH m

D 1100

D 900

D 700

D 550

D 450

D 350

D 280

D 220

D 180

D 140

D 110

D 90

D 65

D 55

D 45

D 35

D 25

D 250

D 500

D 150

D 100

D 70

D 50

D 30

D 1182

D 852

D 602

D 427

D 252

D 1181D 1001D 851D 711D 601D 501D 426D 356D 301D 251D 213D 181D 151D 126D 107D 91D 76D 64D 54D 46D 35D 30D 25D 15

*

16/1818/2020/2525/3030/3535/4040/4545/5050/6060/7070/8080/100100/120120/140140/170170/200200/230230/270270/325325/400

500/600

1190100085071060050042535530025021218015012510690756353453832252010

40/60

60/80

80/100100/120120/140140/170170/200200/230230/270270/325325/400

500/600

1250

1000

800

630

500

400

315

250

200

160

125

100

80

63

50

40

32

25

* Wheels can also be supplied in grit sizes: D3 - D5 - D7 - D10

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Suggestions for the use of diamond wheels for grinding carbide

Type of machining

FEPA wheel

Pre-grinding Fine grinding Lapping

FEPA grit

concen-tration

FEPA grit

concen-tration

FEPA grit

concen-tration

hand grinding

cutters, reamers, etc. on universal tooling grinding machines

grinding profiles on profile grinding machines

cutters planers, saws for wood-working

flat grinding, cylin-drical grinding

internal grinding

6A211A2

11A212A211V9

1EE11E1Q

4A26A2

11A211V912A215A2

1A114A1

1A11A1W

M

M

K

M

K

K

M

D 151D 181D 213

D 151D 181D 213D 107D 126

D 107D 126D 151D 181D 213

D 107D 126D 151D 181D 213

D 107D 126D 151D 181D 213

D 151D 181D 213

100

100

100-125

100-125

100

150

M

M

K

K

K

K

M

K

D 76D 91D 107

D 76D 91D 46D 54D 64

D 46D 54D 64D 76D 91 D 46D 54D 64D 76D 91

D 46D 54D 64D 76D 91

D 107

D 126

50

75

75

75-100

75-100

75

150

100

M

K

K

K

K

K

K

D 46D 54D 30

D 30D 46D 54

D 30 D 46D 54

D 10 D 15D 30

D 7D 10D 15D 30

D 30D 46D 54D 64

40

40-50

75

50

25-50

75-100

The table on page 6 shows a comparison of FEPA grits against US mesh and DIN 848.

M = metal binderK = resin binder

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Explanation of wheel symbols

6A2 D 151 SW 100 x2

wheel type

grit size grit typeconcentra-

tionbinder

TheFEPAstandardshapesforgrindingwheelsareshownonthefollowingpages.

WearealsoabletosupplyshapesandsizeswhichdifferfromtheFEPAstandard.

D = diameter S = chamfer external angle E = thickness at shaft hole T = total thickness H = shaft hole diameter T1 = reduced thickness J = mounting surface diameter U = diamond coating thickness K = clamping surface diameter (if less than T or T1) L = total stick length V = surface angle L1 = shank length W = grinding rim width L2 = diamond coating length X = grinding rim thickness R = radius Y = shank diameter

Explanation of letters in specifications

9Typ

e 1A1

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D

HX

T

D T X HKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 1A1

10Typ

e 14A1

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D

H

X

U

J

T

D U X H T JKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 14A1

11Typ

e 1L1SLIJPSC

HIJV

EN / G

RIN

DIN

G W

HEELS / SC

HLEIFSC

HEIB

EN / M

EULES

D

X

T

H

R

R

D T X H RKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 1L1

12Typ

e

1E6Q/14E6Q

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D

X

U

V

H

T 1

D U X T1 H T J

KorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

D

X

U

V

H

T 1

J

T

Type 1E6Q

Type 14E6Q

V

14E6Q

20

160

13Typ

e 14EE1SLIJPSC

HIJV

EN / G

RIN

DIN

G W

HEELS / SC

HLEIFSC

HEIB

EN / M

EULES

D

UV

H

T

J

X

Type 14EE1

KorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

V

20

160

D U X H T J

14Typ

e 1FF1SLIJPSC

HIJV

EN / G

RIN

DIN

G W

HEELS / SC

HLEIFSC

HEIB

EN / M

EULES

D T X H RKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 1FF1

15Typ

e 6A2

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H E TKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 6A2

16Typ

e 11A2

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H E T J KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 11A2

17Typ

e 12A2/20

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H E T J KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 12A2 / S=20

18Typ

e 12A2/45

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H E T J KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 12A2 / S=45

19Typ

e 9A3

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H E TKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 9A3

20Typ

e 6A9

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D U X H T E KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 6A9

21Typ

e 11V9

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D U X H E T J KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 11V9

22Typ

e 12V9

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D U X H T J E KKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 12V9

23Typ

e 1A1W

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D T X Y L L1KorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 1A1W

24Typ

e 1V1

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D T X H SKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 1V1

25Typ

e 3A1

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D U X H T JKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 3A1

26Typ

e 4BT9/20

SLIJPSCH

IJVEN

/ GR

IND

ING

WH

EELS / SCH

LEIFSCH

EIBEN

/ MEU

LES

D W X H T JKorrelGrit

KrnungGrain

ConcentratieConcentrationKonzentrationConcentration

BindingBinder

BindemittelLiant

ArtikelnummerReference codeIdent nummer

Numro de identit

Type 4BT9 / 20