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1、 STD*JIS G USbO-ENGL 1778 E 4933bUB 05508b3 605 JIS G 0560:1998 JAPANE INDUSTR SE AL STANDARD Translated and Published by Japanese Standards Association Method of sulphur print for steel ICs 77.080.20 Descriptors : steels, ferrous metals, ferrous alloys, surface properties, physical properties of ma
2、terials, testing, photographic paper, printing (photography), sulphides Reference number : JIS G 0560 : 1998 (E) 6s COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services G 0560 : 1998 Fore
3、word This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently, JIS G 0560:1983 is
4、replaced with JIS G 0560:1998. Date of Establishment: 1969-03-01 Date of Revision: 1998-02-20 Date of Public Notice in Official Gazette: 1998-02-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Iron and Steel JIS G 0560 :1998, First English edition published in 1998-
5、07 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, 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. r + O JSA 1998 All rights reserved. Unless otherwise specified, no part of this publi
6、cation 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. Printed in Japan COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese S
7、tandards Association Licensed by Information Handling Services c STD-JIS G O5bO-ENGL 1998 4733b08 05508b5 488 JAPANESE INDUSTRIAL STANDARD JIS G 0560 : 1998 Method of sulphur print for steel Introduction This Japanese Industrial Standard developed in 1969 has come to this day through the revision in
8、 1980 and the review carried out in 1983 putting emphasis on the conformity with ISO. It has passed more than ten years since the latest revision without main change in terms of technical points and nevertheless the revision at this time has been brought about aiming at the complete conformity with
9、IS0 along with the revision of the normative references. The main points of the revision are as follows: a) b) The clause of principle and aim of the test has been provided to secure the conformity with ISO. The clause of report has been newly provided to also secure the conformity with ISO. 1 Scope
10、 print test for steel. excluded. This Japanese Industrial Standard specifies the method of the sulphur However, steels which contain over 0.100 % sulphur are This Standard is also applicable for steel castings. Remarks: The following standard is the corresponding International Standard to this Stand
11、ard. IS0 4968 Steel - Macrographic examination by sulphur print (Ba u man n met hod) 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
12、 applied. Surface roughness - Definitions and designation Black-and-white photographic sheet papers for general use JIS B 0601 JIS K 7534 3 Principle and aim of the test 3.1 The aim of macrographic examination by sulphur printing is to detect by printing on photo-sensitive paper previously soaked in
13、 sulphuric acid solution, the position and area containing sulphur inclusion found in the material in various chemical forms and with various shapes. 3.2 sulphide. The distribution of the sulphur-rich area reveals the generation of hydrogen 3.3 By examining the size and distribution of the sulphur i
14、nclusion detected by this process it is possible to make some assessment of the degree of uniformity of the material. Thus sulphur printing reveals chemical irregularities and may reveal certain physical irregularities. Furthermore, it may be used sometimes to distinguish rimming steel from killed s
15、teel and may also draw attention to certain areas where tests may need to be carried out. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 2 G 0560 : 1998 4 Definition For the purpose
16、 of this Standard, the following definition applies: a) sulphur print test A method for examining the distribution of sulphide in a steel by means of the sulphur print obtained by putting a photo-sensitive paper previously soaked in the sulphuric acid solution, closely on a section of the steel. 5 T
17、est piece The flat test piece shall be cut from the forged or rolled steel generally in perpendicular direction to the working axis, Since hot shearing will affect the alignment of inclusions and texture, segregation, etc. of the sheared portion, and gas cutting will cause hardening or shrinkage cra
18、ck of the said portion, it is appropriate to take the test piece apart from such portions. The test surface of the test piece shall be finished to 1.6 pm to 3.2 pm of JIS B 0601, and it shall be free from grease and oil prior to the test. .- 6 Test methods 6.1 print test. As a rule, use the photogra
19、phic paper specified in JIS K 7534 for the sulphur 6.2 Immerse the photographic paper which has been cut to dimensions appropriate to the test surface in 1 % to 5 % sulphuric acid solution, and soak it with the solution sufficiently (approximately for 5 min). Then, remove the excess solution by putt
20、ing it between papers or using the absorbent cotton or the like after taking it out from the solution. 6.3 Immediately, adhere the photographic paper which has been removed the solution sufficiently over the entire test surface, and then, remove the air bubbles by pressing with the absorbent cotton
21、or the like, preventing the photographic paper from slipping off. In obtaining a sulphur print of smaller test piece, it is appropriate to soak it in sulphuric acid solution sufficiently and to adhere the test piece closely to the photographic paper. After enough time to enable the colouring of the
22、photographic paper to a suitable density by reacting with the sulphide contained in the steel, take off the photographic paper from the test surface. In this case, the adhering time of the photographic paper shall be about 1 min to 3 min. 6.4 Wash the photographic paper which has been taken off from
23、 the test surface and immerse it in 15 % to 40 % aqueous solution of sodium thiosulfate bought on the market at room temperature for 5 min to 10 min. After fixing with the solution, wash it with running water for 30 min or more. 6.5 respect to the dry photographic paper. After fixing and washing, ex
24、amine the state of distribution of the sulphide with 6.6 the effect of previous test disappears. Where the same test surface is to be tested again, cut off the test surface until COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Associati
25、on Licensed by Information Handling Services 3 G 0560 : 1998 7 Classification of test result 7.1 In the sulphur print test, the classification and symbols of the state of the sulphide distribution shall conform to Table 1. Furthermore, examples of photographs are given in Attached Fig. 1. Table 1 Cl
26、assification and symbols of state of sulphide distribution Classification Normal segregation Inverse segregation Central segregation Dispersed segregation Linear segregation Columnar central segrega- tion Symbo Si s c S D S L sco Remarks A type of segregation normally observed on common steel. Sulph
27、ide distribution increases from periphery towards center of the steel, where the coloration on the photographic paper presents darker in the center than that of the periphery. The coloration is particularly lighter in the rim part if rimmed steel. A type of segregation in which the sulphide distribu
28、tion decreases from periphery towards center, where the coloration on the photographic paper presents lighter in the center than that of the periphery. A type of segregation in which sulphide distribution is concentrated at the center of the steel, where particularly dense coloration on the photogra
29、phic paper being presented. A type of segregation, in which the segregations o sulphide are presented in densely coloured spots on the photographic paper. A type of segregation, in which the segregations o sulphide are presented in densely coloured lines on the photographic paper. A type of segregat
30、ion as observed in steel section and the like, where the central segregation presents in a columnar shape on the photographic paper. Remarks: All of symbols may be expressed by capital letter 8 Report included and selected based on the agreement between the interested parties. If the test report is
31、necessary, the following information shall be a) The steel grade examined b) The cast number c) d) The position of the surface examined The result of the test Example of indication; SFJ-SC is a normal segregation, and in addition, a central segregation is also observed. COPYRIGHT Japanese Standards
32、Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services Normal segregation Central segregation Inverse segregation Dispersed segregation (These photgraphs are particularly extreme examples printed$ Attached Fig. 1 Examp
33、les for COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD-JIS G O5bO-ENGL 1998 L1933b 05508b9 023 G 0560 : 1998 5. Linear segregation Columnar central segregation Jili order to mak
34、e the classification of segregation more clearly.) classification of sulphur prints COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services STD-JIS G OSbO-ENGL 1798 4933b08 0550870 895 Errat
35、a for JIS (English edition) are printed in Standardization Journal, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly information. Errata will be provided upon request, please contact: Standardization Promotion Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services
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