A Reference number ISO 6344 2 1 998(E) INTERNATIONAL STANDARD ISO 6344 2 First edition 1 998 04 1 5 Coated abrasives — Grain size analysis — Part 2 Determination of grain size distribution of macrogri[.]
I SO I N TE RN ATI ON AL STAN D ARD 6344-2 Fi rst ed i ti on 998-04-1 Coated abrasi ves — G rai n si ze an al ysi s — Part 2: Determ i n ati on of g rai n si ze d i stri bu ti on of m acrog ri ts P1 to P220 Abrasi fs appl i qu és — G ran u l om étri e — Parti e 2: Déterm i n ati on de l a di stri bu ti on g ran u l om étri qu e des m acrog rai n s P1 P220 A Referen ce n u m be r I SO 6344-2: 998 ( E ) I SO 6344-2: 998(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote International Standard ISO 6344-2 was prepared by Technical Committee ISO/TC 29, Small tools, subcommittee SC 5, Grinding wheels and abrasives ISO 6344 consists of the following parts, under the general title Coated abrasifs - Grain size analysis: Part : Grain size disribution test Part 2: Determination of grain size distribution of macrogrits P1 to P220 Part 3: Determination of grain size distribution of microgrits P240 to P2500 Annexes A and B of this part of ISO 6344 are for information only © ISO 998 All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher International Organization for Standardization Case postale 56 • CH-1 21 Genève 20 • Switzerland Internet central@iso.ch X.400 c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii I NTERN ATI ON AL STAN DARD © I SO 6344-2: 998(E) I SO Coated abrasi ves — G rai n si ze an al ysi s — Part 2: Determ i n ati on of g rai n si ze d i stri bu ti on of m acrog ri ts P1 to P220 Scope Th i s part of I SO 6344 sets forth a m eth od for determ i n i n g or testi n g th e g rai n si ze di stri bu ti on of el ectro-fu sed al u m i n i u m oxi d e an d si l i carbi d e m acrogri ts P to P 220 for coated abrasi ves as d efi n ed i n I SO 6344-1 I t appl i es both to th ose g ri ts u sed i n th e m an u factu re of coated abrasive produ cts an d to th ose g ri ts rem oved from produ cts for testi n g pu rposes N orm ati ve referen ces Th e fol l owi n g stand ards tai n provi si on s wh i ch , th rou g h reference i n th i s text, consti tu te provi si on s of th i s part of I SO 6344 At th e ti m e of pu bl i cati on , th e edi ti on s i n di cated were val i d Al l stan d ards are su bj ect to revi si on , an d parti es to ag reem en ts based on th i s part of I SO 6344 are en cou rag ed to i n vesti g ate th e possibi l i ty of appl yi n g th e m ost recen t edi ti on s of th e stan dards i n d i cated bel ow M em bers of I EC an d I SO m n tai n regi sters of cu rren tl y val i d I n ternati on al Stan d ards 1) I SO 331 0-1 : — , Test si eves — Tech n i cal requ i rem en ts an d testi n g — Part : Test si eves of m etal wi re cl oth I SO 6344-1 : 997, Coated abrasi ves — G rai n si ze an al ysi s — Part : G rai n si ze di stri bu ti on test I SO 91 38: 993, Abrasi ve g rai n s — Sam pl i n g an d spl i tti n g I SO 9284:1 992, Abrasi ve g rai n s — Test-si evi n g m ach i n es Defi n i ti on s For th e pu rposes of th i s part of I SO 6344 th e d efi n i ti on s g i ven i n I SO 6344-1 appl y G rai n si ze d i stri bu ti on testi n g Apparatu s 4.1 Test si evi n g m ach i n e Th e test sh al l on l y be carri ed ou t wi th test si evi n g m ach i n es g i vi n g reprodu ci bl e an d comparabl e resu l ts, e g RO-TAP test si evi n g m ach i n es i n accordan ce wi th I SO 9284 1) To be pu bl i sh ed (Revi si on of I SO 331 0-1 :1 990) I SO 6344-2: 998(E) 4.1 © I SO Ti m e swi tch A ti m e swi tch sh al l be u sed to trol th e test si evi n g m ach i n e for a peri od of m i n Th e perm i ssi bl e accu racy sh al l ± s be 4.1 Uti l i ty test si eves Th e u ti l i ty test si eves g i ven i n tabl e sh al l be u sed Th ey represent a sel ecti on of th e test si eves accordi n g to I SO 331 0-1 Th e ch ecki n g of th e servi ceabi l i ty of th e test si eves i s d escri bed i n cl au se 4.1 Bal ance On l y bal an ces wi th an accu racy of ± 0, g sh al l be u sed Masterg ri ts Th e m asterg ri ts (M G ) 2) represent th e reference for th e g rai n si ze testi n g for coated abrasi ve produ cts Th e g rai n si ze d i stri bu ti on of th e m astergri ts i s g i ven i n tabl e (th e l i m i ts specifi ed i n tabl e reprodu ced as tabl e i n th i s part of I SO 6344) , wi th th e reservation th at th e tol eran ces for th e i n di cated val u e on th e test si evi n g m achi n e of M PA Darm stadt Each su ppl y Q of of I SO 6344-1 an d Q are are on l y h al f m astergri ts sh al l be accom pani ed by a test certi fi cate of M PA Darm stadt i n di cati n g th e si evi n g an al ysi s an d th e respective date of test of th e m astergri ts 2) Mastergri ts can be obtai ned by Staatl i ch e Materi al prü fu ng sanstal t Darmstadt, Grafenstraße 2, D-64283 Darmstadt Th i s i nformati on i s gi ven for th e ven i ence of u sers of th i s part of I SO 6344 an d does n ot consti tu te an endorsemen t by I SO of th e produ ct named Equ i val ent produ cts may be u sed i f th ey can be sh own to l ead to same resu l ts © I SO 6344-2: 998(E) I SO Table Nominal sizes of openings of test sieves mm µm 3, 35 2, 36 ,7 ,4 ,1 850 71 600 500 425 355 300 250 21 80 50 25 06 90 75 63 53 Ch ecki n g of th e com m on u se u ti l i ty test si eves Comm on u se u ti l i ty test si eves m u st be free from vi si bl e d efects su ch as textu ral fl aws (g aps, broken wi res etc ) , i n su ffi ci en t ten si on of th e fabri c, di stortion s of th e fram e (ou t of rou n dn ess, l eaks an d sol d eri n g defects) an d free from bl i n d i n g as th ese wi l l i m pai r th e si evi n g resu l ts M astergri ts sh al l be u sed for ch ecki n g th e servi ceabi l i ty of th ese test si eves wi th i n th e m ean i n g of th i s stan d ard Th e u ti l i ty test si eve to be tested sh al l be m ou n ted i n to th e respective n est of si eves as th e 3rd si eve Th e st si eve an d th e 2n d si eve m u st be ch ecked si eves Th e su m of th e resi d u es on th e st, 2n d an d 3rd si eve each sh al l n ot d evi ate from th e m astergri t an al ysi s val u e as g i ven by M PA Darm stadt by m ore th an , ti m es th e tol eran ce accordi n g to tabl e I SO 6344-2: 998(E) © I SO Si eves wh i ch can n ot be i n serted as 3rd si eve wh en assem bl ed i n th e n est of test si eves accordi n g to tabl e 2, sh al l be tested as 4th si eve I n th i s case i t sh al l be en su red th at th e st, 2n d an d 3rd si eves are ch ecked si eves Th e su m of th e resi d u es on test si eves , 2, an d each m u st be wi th i n , ti m es th e tol erance accordi n g to tabl e for th e m astergri t an al ysi s val u e g i ven by M PA Darm stadt After th i s test, a si eve i s consi d ered as n ot su i tabl e i f th e su m of th e resi du es on th e st, 2n d, an d 3rd or on th e st, 2n d, 3rd an d 4th si eve respectivel y exceeds th e perm i ssi bl e d evi ati on s of tabl e by m ore th an h al f th e val u e Th e su m of th e resi d u es of th e m astergri t on th e st, 2n d an d 3rd si eve or on th e st, 2n d , 3rd an d 4th si eve as d etermi n ed by M PA Darm stadt i s appl i cabl e as th e reference val u e Th e si eves m arked wi th 3, 35 m m , 2, 36 m m an d 53 µm sh al l be tested accordi n g to I SO 331 0-1 Testi n g of m acrog ri ts P1 to P220 5.1 Preparati on Preparation of th e sampl e Th e abrasi ve g ri t to be tested m u st be d ry I f i t i s wet, i t m u st be d ri ed at a tem peratu re of 05 °C u n ti l i ts wei g h t rem n s stan t 00 g of th e d ry abrasi ve sh al l be wei g h ed ou t as sam pl e for test si evi n g I n th e case of g rai n s recovered from th e coated abrasi ve prod u ct, th e sam pl e sh al l n ever be l ess th an 20 g For sam pl i n g an d spl i tti n g of abrasi ve g rai n s, see I SO 91 38 5.1 Mou n ti n g of test si eves Th e fi ve u ti l i ty test si eves, see tabl e 2, requ i red for testi n g th e respective g rai n si ze sh al l be assem bl ed togeth er wi th th e bottom pan to form a n est of si eves taki n g i n to accoun t th e prescri bed order Th e sampl e sh al l be pou red on to th e fi rst test si eve an d th e cover pu t on Th en th e n est of si eves sh al l be m ou n ted i n th e test si evi n g m ach i n e Th e tapper sh al l be pl aced on th e cover of th e n est of test si eves Determi n ati on of th e m astergri t val u es for th e u ti l i ty test si evi n g Becau se of th e u n avoi d abl e d evi ati on s between test si eves of th e sam e desi g n ati on , i t i s n ecessary to carry ou t a fi rst si evi n g wi th m astergri ts on th e si eves to be u sed i n order to determ i n e th e Q val u es of th e m astergri t (M G val u es) , th u s ch ecki n g th e test si eves, an d to obtai n th e corrected val u es for th ese si eves For th i s pu rpose, 00 g of m astergri t of th e sam e g rai n si ze sh al l be wei g h ed ou t an d transferred to test si eve Th e test si evi n g m ach i n e sh al l be ru n for m i n by setti n g th e ti m e swi tch accordi n g l y After th e si evi n g i s com pl eted, th e resi d u es on th e si eves sh al l be tran sferred cu m u l ati vel y to th e bal an ce pan an d wei g h ed, beg i n n i n g wi th th e resi d u e on th e coarsest test si eve Th e resi d u es on th e fi n er test si eves are add ed to th e resi d u e on th e coarser test si eves Th e resi d u e on th e bottom pan sh al l al so be wei g h ed Th e d eterm i n ed resi d u es Q to Q are th e M G val u es of th e n est of u ti l i ty test si eves u sed for th e sam e g rai n si ze Test si evi n g proced u re 00 g of th e abrasi ve g rai n to be tested sh al l be wei g h ed ou t as sampl e an d tran sferred to test si eve Th e si evi n g procedu re sh al l be th e sam e as d escri bed for th e m astergri t I f g rai n s recovered from th e coated abrasi ve produ ct are to be tested, th e q u an ti ty of th e sam pl e sh al l be n ot l ess th an 20 g Th e si evi n g resu l t sh ows th e g rai n si ze d i stri bu ti on of th e sam pl e © I SO 6344-2: 998(E) I SO Eval u ati on S i e vi n g re su l ts fo r m aste rg ri t an d th e sam pl e can be st be co m pare d u si n g a typi cal form as sh o wn be l o w: Col u m n : Si eve d esi g n ati on accord i n g to apertu re si zes as g i ven i n tabl e Col u m n 2: Si evi n g an al ysi s of th e m asterg ri t as g i ven by th e certi fi cate of M PA Darm stad t Col u m n 3: Si evi n g an al ysi s of th e m asterg ri t d eterm i n ed on th e n est of u ti l i ty test si eves Col u m n 4: Di fferen ce between th e si evi n g an al ysi s of th e m asterg ri t i n Col u m n an d th e si evi n g an al ysi s of th e m asterg rit by M PA D arm stad t i n col u m n Atten ti on sh al l be pai d to th e si g n s! Col u m n 5: Si evi n g an al ysi s of th e sam pl e d eterm i n ed on th e sam e n est of test si eves Col u m n 6: Corrected si evi n g an al ysi s of th e sam pl e, d eterm i n ed from th e d i fferen ce between col u m n an d col u m n Atten ti on sh al l be pai d to th e si g n s! Col u m n 7: Perm i ssi bl e l i m i ti n g val u es accord i n g to tabl e If in th e res u l ts co l u m n are wi th i n th e pe rm i s s i bl e tol e ran ce l i m i ts g i ven in co l u m n 7, th e n th e s am pl e is in co m pl i an ce wi th th e stan d ard I f th e val u es i n col u m n are n o t wi th i n th e pe rm i s s i bl e to l e ran ce l i m i ts , a s e co n d s am pl e s h al l be take n an d a n e w si e vi n g carri e d o u t Desi g n ati on Th e d es i g n ati on o f m acro g ri ts fo r fu s ed al u m i n i u m oxi d e o r s i l i co n carbi d e i n acco rd an ce wi th th e re q u i re m en ts o f th i s part o f I S O 44 sh al l co m pri se a) b) th e type o f abrasi ve ; th e d esi g n ati on of th e g ri t i n cl u d i n g th e l etter "P" for a coated abrasi ve fol l owed by a ch aracteri sti c n u m ber representi n g th e g ri t si ze E XAM P LE : Marki n g Wh en packi n g g ri ts o f fu s e d al u m i n i u m oxi d e an d s i l i carbi d e fo r co ate d abras i ve pro d u cts , th e g ri t d e s i g n ati on , i e P , sh al l be m arked o n e ach o f th e sm al l e st packi n g u n i ts © ISO I SO 6344-2: 998(E) Tabl e — G rai n si ze d i stri bu ti on of m acrogri ts P1 to P220 Test si eve Gri t desi gnati on P1 P20 P24 P30 P36 P40 P50 P60 P80 P1 00 P1 20 P1 50 P1 80 P220 Test si eve Residue Residue on on test test sieves Aperture sieve Aperture and Aperture size size size sieve sieve sieve mm P1 Test si eve w 3,35 2,36 ,7 ,4 ,1 – – – – – – – – – µm – – – – – – 71 600 500 355 300 21 80 50 25 Q % 0 0 0 0 0 0 0 mm 2,36 ,7 ,1 – – – – – – – – – – – w µm – – – – 850 71 500 425 355 250 21 50 25 06 90 Q w max % mm µm 3 1 3 2 ,4 – – – – – – – – – – – – – – – 850 71 600 425 355 300 21 80 25 06 90 75 Test si eve Residue on test sieves , and Q % Aperture size sieve mm w µm Test si eve Residue on test sieves , 2, and Q % Residue on test sieves Aperture , 2, 3, size and sieve mm ± ,7 – 61 ± ,4 26 ± ,1 – 75 ± 42 ± – 850 86 ± – ± – 71 61 ± – ± – 600 61 ± – ± – 500 61 ± – 42 ± – 355 86 ± – 26 ± – 300 75 ± – ± – 250 61 ± – 26 ± – 80 75 ± – ± – 50 61 ± – 42 ± – 06 86 ± – 26 ± – 90 75 ± – ± – 75 62 ± – ± – 63 62 ± – w µm – – 71 600 500 425 300 250 21 50 25 90 75 63 53 Q Rem nder in bottom pan ∆Q max % % 92 96 96 92 92 92 96 96 92 96 92 96 96 90 90 4 8 4 8 4 10 10 © ISO I SO 6344-2: 998(E) Form for record i n g th e resu l ts of si evi n g an al ysi s of P m acrog ri ts Testing of P1 to P220 macrogrits Abrasive: Supplier: Girt designation: Date of delivery: Test sieving machine: Quantity of sample: Test Si eve Si evi n g an al ysi s of si eve desi g n ati on th e m asterg ri t Di fference Si evi n g Corrected Perm i ssi bl e an al ysi s of si evi n g l i m i ti ng an al ysi s of val u es th e sam pl e on set of (column minus column 2) accordi n g on set of to MPA u ti l i ty certi fi cate mm µm Bottom pan contents ( ∆Q ) Date: % u ti l i ty test si eves Remarks th e sam pl e accordi n g to (column minus column 4) tabl e test si eves % % (= - 2) % % (= - 4) % Operator: © ISO I SO 6344-2: 998(E) An n ex A (informative) Exam pl e of presen tati on of test d ata for m acrog ri t P g rai n si ze d i stri bu ti on Testing of sample of electro-fused aluminium oxide of grit size P 80 on two different sets of sieves, A and B The results of examples A and B are recorded on the same form A G rai n si ze d i stri bu ti on an al ysi s wi th si eves set A Testing of P1 to P220 macrogrits Abrasive: Electro-fused aluminium oxide Supplier: X Girt designation: P 80 Date of delivery: 984-06-1 Test sieving machine: C2 Quantity of sample: 00 g Test Si eve Si evi n g an al ysi s of si eve desi g n ati on th e m asterg ri t Di fference Si evi n g Corrected Permi ssi bl e an al ysi s of si evi n g l i m i ti ng an al ysi s of val u es th e sam pl e on set of th e sam pl e accordi n g to tabl e u ti l i ty test (column minus column 2) mm µm 355 250 21 80 50 Bottom pan contents ( ∆Q ) Date: 984-06-1 accordi n g on set of to MPA u ti l i ty test certi fi cate si eves % % 24,5 77,5 98 27 86 98 % (= - 2) +3 + 2,5 + 8,5 0 si eves % 31 88 98 Operator: Y Remarks (column minus column 4) % (= - 4) 28,5 79,5 98 % max 20 to 32 66 to 84 96 max © ISO I SO 6344-2: 998(E) A G rai n si ze d i stri bu ti on an al ysi s wi th si eves set B Testing of P to P 220 macrogrits Supplier: X Abrasive: Electro-fused aluminium oxide Grit designation: P 80 Date of delivery: 984-06-1 Test sieving machine: A3 Quantity of sample: 00 g Test si eve Si eve Si evi n g an al ysi s of desi g n ati on th e m asterg ri t Di fference Si evi n g Corrected Permi ssi bl e an al ysi s of si evi n g l i m i ti n g an al ysi s of val u es th e sam pl e on set of Rem arks th e sam pl e accordi n g t o u ti l i ty test tabl e si eves (column minus column 2) mm µm 355 250 21 80 50 Bottom pan contents ( ∆Q ) Date: 984-06-1 accordi n g on set of to MPA u ti l i ty test certi fi cate si eves % % 24,5 77,5 98 22 81 98 % (= - 2) 0 - 2,5 + 3,5 0 (column minus column 4) % 25 83 98 % (= - 4) 27,5 79,5 98 % max 20 to 32 66 to 84 96 max Operator: Y The interpretation of the test results shows that despite the use of different sets of utility sieves the sample conforms to this part of ISO 6344 in both cases I SO 6344-2: 998(E) © I SO An n ex B (i n form ati ve) Bi bl i og raph y [1 ] I SO 565:1 990, Test si eves — M etal wi re cl oth , perforated m etal pl ate an d el ectroform ed sh eet — N om i n al si zes of open i n g s 10 I SO 6344-2: 998(E) © I CS 25 00 70 Descri ptors: to o l s , abras i ve s , P ri ce bas e d o n pag e s g rai n s i z e an al ys i s , te s ts , d e te rm i n ati o n , s i z e cl as s i fi cati o n , d e s i g n ati o n , m arki n g I SO