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1、JIS s JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Test methods for abrasion resistance of anodic oxide coatings on aluminium and aluminium alloys- Part 2 : Abrasive jet test ICs 25.220.20 Descriptors : aluminium, aluminium alloys, protective coatings, oxid
2、ation methods, anodizing, anodic coating, wear resistance, wear tests Reference number : JIS H 8682-2 : 1999 (E) 7s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproducti
3、on or networking permitted without license from IHS -,-,- H 8682-2 : 1999 Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in acc
4、ordance with the Industrial Standardization Law. Consequently, JI$ H 8682 : 1993 was withdrawn and the abrasive jet test, which was specified in the withdrawn JIS H 8682, has been replaced in this Standard. This establishment, for the purpose of making it easy to compare Japanese Industrial Standard
5、s with International Standards, to prepare the Japanese Industrial Standard which conforms to International Standards, and to propose a draft for International Standard on a basis of Japanese Industrial Standard, has adopted (1) abrasive wheel wear test, (2) abrasive jet test, and (3) sand-falling a
6、brasion resistance test, which were specified in withdrawn JiS H 8682, and has made them independent parts as shown in the following new standards. JIS H 8682-1 Test methods for abrasion resistance ofanodic oxide coatings on aluminium and aluminium alloys-Part 1 : Wheel wear test JI$ H 8682-2 Test m
7、ethods for abrasion resistance of anodic oxide coatings on aluminium and aluminium alloys-Part 2 : Abrasive jet test JIS H 8682-3 Test methods for abrasion resistance of anodic oxide coatings on aluminium and aluminium alloys-Part 3 : Sand-falling abrasion resistance test Date of Establishment: 1999
8、-08-20 Date of Public Notice in Official Gazette: 1999-08-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Non-Ferrous Metals JIS H 8682-2 : 1999, First English edition published i n 2000-09 Translated and published by: Japanese Standards Association 4-1-24, Akasaka,
9、 Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. . b 8 O JSA 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
10、or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reprod
11、uction or networking permitted without license from IHS -,-,- STD-JIS H 8b82-2-ENGL 1999 II 4933608 05b5825 25b JAPANESE INDUSTRIAL STANDARD JIS H 8682-2 : 1999 Test methods for abrasion resistance of anodic oxide coatings on aluminium and aluminium alloys- Part 2 : Abrasive jet test t Introduction
12、This Japanese Industrial Standard has been prepared based on the first edition of IS0 8252 Anodized aluminium and aluminium alloys-Measurement of mean specific abrasion resistance of anodic oxidation coatings with an abrasive jet test apparatus, published in 1987; and on the corresponding parts of t
13、he first edition of IS0 10074 Specification for hard anodic Oxidation coatings on aluminium and its alloys, published in 1994, without any modification in technical contents, how- ever the contents (summary, implements, judgement by circuit, and calculation), which are not mentioned in corresponding
14、 International Standard, have been supplemented in this Japanese Industrial Standard, and additionally the content (test condition) specified in corresponding International Standard has been partly modified in this Japanese Industrial Standard. This Standard, which specifies the test method on abras
15、ion resistance of anodic oxide coatings on aluminium and aluminium alloys, is composed of three such tests as abrasive wheel wear test, abrasive jet test, and sand-falling abrasion resistance test, and their application shall be submitted to the agreement between the parties concerned with delivery
16、who have just considered the shape of products, type of coating, thickness of coating and so on. In this Standard, the “passages” underlined with dotted line are the items which are not specified in corresponding International Standards. 1 Scope This Japanese Industrial Standard specifies the abrasi
17、on-resistance test method, which is carried out by the abrasive jet test, in order to test the anodic oxidation coatings (hereafter referred to as “coatings”) with at least 5 pm thickness, applied to the surface of products (hereafter referred to as uproducts”) manufactured with alu- minium and alum
18、inium alloys. Remarks : The International Standards corresponding to this Standard are as follows. IS0 8252 : 1987 Anodized aluminium and aluminium alloys-Mea- surement of mean specific abrasion resistance of an- odic oxidation coatings with an abrasive jet test apparatus IS0 10074 : 1994 specificat
19、ion for hard anodic oxidation coatings on aluminium ana? its alloys 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards indicated below shall be applied. JIS C 1
20、202 Circuit testers JIS H 0201 Glossary of terms used in the surface treatment of aluminium Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproduction or networking permitt
21、ed without license from IHS -,-,- JIS H 8680-2 Test methods for thickness of anodic oxide coatings on aluminium and aluminium alloys-Part 2 : Eddy current method JIS R 6111 Artificial abrasives JIS 2 8801 Test sieves - Air compressor shall not have any hindrance for testing, and give little fluctuat
22、ion to set air pressure. 3 Definitions For the purpose of this Standard, the definitions in JIS H 0201 apply, and the rest of the terms are as follows. a) standard test specimen The test specimen to correct the discrepancy of test results brought about from the difference of test apparatus, the lots
23、 of used abrasive paper, or the like. reference test specimen The test specimen agreed between the parties con- cerned with delivery, and used alternatively for the standard test specimen. b) 5 Apparatus, implements and abrasives The apparatus, implements and abra- sives shall be as follows. 5.1 App
24、aratus The abrasive jet tester is composed of, a hopper for abrasives, shut- ter, guiding tube, jet nozzle, test-specimen supporting stage, mercury manometer, pressure control valve, air compressor and others, and they shall satisS. the require- ments shown in Table 1. The apparatus shall be housed
25、in a transparent synthetic-resin made box(1) to pre- vent the dispersing of abrasives. An example of abrasive jet tester is shown in Fig. 1. Note (1) In order to keep the humidity in test surroundings at specified value, the dehumidifying air may be introduced in the box. Table 1 Requirements to be
26、provided by the apparatus Hopper for abrasives Guiding tube I Jet nozzle Test-specimen supporting stage I Mercury manometer Air compressor I Requirements to be provided I The amount of falling abrasives shall be controlled, which will be performed by, for instance, setting a control bar at the cente
27、r of the hopper. The tube of about 3.4 mm inside diameter, equipped with a funnel type receptacle. End point of the nozzle shall be 3 . 0 f 0.1 mm inside diameter. Clamping device for test specimen is capable of fixing test specimen with 55 f 1 degree from vertical direction (in case of curved test
28、specimen, 35 * 1 degree), and of adjusting distance between end point of nozzle and test specimen to be 10 k 1 mm. Capable of reading out the scale to the nearest 65 Pa (0.5 mmHg). 1 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, Use
29、r=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 H 8682-2 : 1999 for control bar Control bar of unit: mm Detail of nozzle part o manometer A=93.+0.1 Fig. 1 Example of abrasive jet tester 5.3 Abrasives Abrasives shall be si
30、licon carbide group abrasives No. C100 speci- fied in JIS R 6111. The limit of repeat use of abrasives is at most 50 times, and when trying to re- peatedly use, employ the abrasives which passes through the sieve of 212 pm nomi- nal size and remains on the sieve of 75 p m nominal size specified in J
31、IS 2 8801. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 H 8682-2 : 1999 Environment of test site _._.
32、_._.-_._._-.- Angle needed for test (9 6 Standard test specimen, reference test specimen The standard test speci- men and reference test specimen shall be as follows. Ordinary temperature, relative humidity less than 65% 55 f lo 6 . 1 cording to the specification shown in Annex 1 or Annex 2. Standar
33、d test specimen Employ the standard test specimen prepared ac- Falling rate of abrasives Pressure of flowing air (informative: value on mercury manometer) Distance between jet nozzle and test specimen 6.2 cording to the agreement between the parties concerned with delivery. Reference test specimen E
34、mploy the reference test specimen prepared ac- 25 I 1 g/min Standard pressure 7:5-kPa Standard pressure 15.0 kPa (58 f . 0.5 mmHg) (116 I 0.5 mmHg) 10,lmm 7 Test specimen Test specimen shall be as follows. a) Take the test specimen from effective surface on product. In cases where no product is take
35、n, however, the test specimen, prepared from the same mate- rial(2) as the products and under the same treatment condition(3) as that of the coatings, may be used. The standard size of the test specimen shall be 100 mm x 100 mm. Other size of test specimen, however, can be used when the parties conc
36、erned with deliv- ery are agreed. b) c) Previously, the test specimen shall be cleaned with soft cloth moistened with solvent(*) that is adequate to the its dirt. Notes (2) The kind, temper grade, or surface condition of the material prior to treatment shall be the same as the product. (3) Pre-treat
37、ment and the treatment of coatings shall be carried out in the same bath and the same condition as those of the product in order to achieve the same performance as that of the product. (4) The solvents here mentioned are acetone, ethanol, ethyl ether, me- thyl ethyl ketone, and so on, and they shall
38、 not corrode test speci- men and not cover it with protective film. 8 Test conditions Test conditions shall be as shown in Table 2. Table 2 Test conditions Test condition I Items I Ordinary coatings I Hard coatings Note (5) When testing curved test specimen, the normal line at the surface to be test
39、ed shall be 35 k 1 degree to vertical line. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 H 8682-2 : 1
40、999 9 Procedures Carry out the procedures in the following sequence. The judge- ment of end point (exposure of substrate) is carried by either naked eyes or detec- tion of current, and its selection is committed to the agreement between the parties concerned with delivery. Judgement by naked eyes Co
41、ntrol the apparatus under such condition that falling rate(6) of abrasives will be set within the limit of specified value. Control(7) the pressure of supplied air to be specified value. Determine the spots (several points) to be tested on standard test specimen or reference test specimen and test s
42、pecimen, and measure coating thickness at each spot. Fix the standard test specimen or reference test specimen on sample support- ing stage so that it makes 55 f 1 degree to vertical line, and allow its target surface to be located 10 t 1 mm lower than the end point of the jet nozzle. Open the stop
43、cock of air supply(8). Open the shutter for abrasives falling to let fall the abrasive, and at the same time start a timer (stop watch). Observe exposing condition of substrate (by color variation), and when its di- ameter becomes about 2 mm, stop abrasive falling, and just stop the timer. Record th
44、e duration (s) while the timer was working. Change the position of the test specimen and try the procedures from d) to h) two times or more. In this case, it shall be necessary to keep apart between adjacent two test spots by at least 10 mm in lateral direction and 20 mm in longitudinal direction. A
45、verage the values obtained at h) by repeated procedures, and make the aver- aged value W j . Then, carry out the procedures from d) to i) on the test specimen. When naked eye observed the color change on substrate exposed, stop the fall- ing of abrasives and at the same time stop the timer. e;) ._.
46、_. ._. _._.*_._ _ _ _._ _._._. _-. .-._. ._. . ._. _. ._. ._._ ._. _ _ _. _. ._._-_. -.-. ._. _._. _._.-_._._._- Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 08:24:04 MDTNo reproduction
47、or networking permitted without license from IHS -,-,- 6 H 8682-2 1999 h) Follow 9 . 1 h ) . i Basis on the duration recorded at 9.2 g) -? establish the several levels of test du- ration . which respectively has shortened time by definite time difference (s) than sives and stop the falling with defi
48、nite time. . the recorded dura ti on 9 and after chan&%- P?Sit!.on, si!?.Y. !?ut - fd!.in.g. oc .abra:. . i _ Checkthe.c.urrent-lesl.witha.tester-ateach-test-ositlonbetw_n-the-substrate tester. o ! ! .th!? d?radedsI?ot, andif at least-!?!? time. th? J?!?i!m .of lhe tester. s-hows strat!?. .!xP.*d:. .The. d9rati.?.n,.-Yhich.k me. shortest -on-e-amongthe-durations. and abraded spot. In this _._._._? case . slightly apply*-three times the stylus point of 5 O00 R or less, the abraded spot is judged that the coating is t