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1、J I S 6%0566 80 4933608 0045724 5 UDC 669.14:620.163.6 I S JAPANESE I NDUSTRIAL STANDARD Method of Spark Test for Steels JIS G 0566 -1980 Translated and Published Japanese Standards Association Printed in Japan 15 S 1 Copyright Japanese Standards Association Provided by IHS under license with JSALic
2、ensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without license from IHS -,-,- Translation without guarantee standard in Japanese is to be evidence i n the event of any doubt arising, the original Copyright Japanese Sta
3、ndards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without license from IHS -,-,- UDC 669.14:620.163.6 JIS G*O5bb 80 W 4933608 0045726 9 JAPANESE INDUSTRIAL STAND
4、ARD J I S Method of Spark Test for Steels G 0566-1980 I. Scope This Japanese Industrial Standard specifies the method of spark test y here- inafter referred to as the Iltest“, with grinder for steel ingots , steel billets Y steel materials and other steel products, hereinafter referred to as the “te
5、st specimens“. 2. Purpose The purpose of the test is to perform. an estimation of the class of steel or a discrimination of foreign materials on the test specimen. 3. Definitions For the purpose of this standard, the following definitions apply: (I) estimation of class of steel specimen of which the
6、 class of steel is unknown, it means to estimate When the test is carried out on the test what class of steel the test specimen is. discrimination of foreign materials test specimen which is suspected to contain the foreign materials, it means to discriminate the foreign materials or to confirm that
7、 no foreign material is contained. (2) When the test is carrieci out on the 4. Form and Designation of Spark The form and designation of the spark shall be as given in Fig. 1. Fig. 1 . Form and Designation of Spark 1 Test specimen n Angle n , . of I Streamline I Burst “* standard specimen Grinder -
8、ot o f Oi spark spark spark I_- _- c - - Applicable Standard: JIS R 621 O-Vitrified Grinding Wheels Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking
9、 permitted without license from IHS -,-,- a . . J I S G*05bb BO 4933bO 0045727 O Iii G 0566-1980 I-. 5. Instrument 5 1 Test Instrument In order to.keep consistency of the test conditions , cares shall be taken to use always the identical instruments. 5.2 Grinder %Either electric or pneumatic driven
10、grinder and either fixed or portable, type grinder may be used. It shall be capable of producing sufficient sparks for observation and of conducting the grinding and the observation with safety. 5.3 Grinding Wheel The grinding wheel with the grain size of 36 or 46 and Further, a the bonding of P or
11、Q or s o specified in JIS R 6210 shall be used. peripheral speed of 20 m/s or over shall generally be used. 5.4 avoid the direct rays of the sun, or to regulate the surrounding light, black curtains screens and a portable dark cabinet should preferably be used, 6. Standard Specimen Auxiliary Instrum
12、ent i f it is required to prevent the effect of draft, to 6.1 It should be preferable to prepare several steel bars or the like of known chemical composition as the standard specimens. 6.2 The determination of the chemical composition of the standard specimen shall be in .accordance with the methods
13、 for chemical analysis specified in the Japanese Industrial Standard. 6 3 The standard specimens shall be capable of producing the representative affected zones by acetylene cutting scales, sparks of their class of steel, and shall be free from the decarburized layers, carburized layers , nitrided l
14、ayers etc. 6,4 The standard specimens should preferably have the same manufacturing process as the test specimens. 7. Test Method 7.1 General Rules for Test 7. I .l The test shall be usually carried out under the identical conditions and with the identical instrumnts . 7.1 .2 The tests shall general
15、ly be carried out in a properly dim room. Where the tests are carried out in the open air or in a light place, the brightness of the background shall be so regulated as not to interfere with the color of the spark or their brightness , shutting out the spark from the direct rays of the sun by using
16、the auxiliary instruments 7.1 . 3 In carrying out the tests , the effect of the draft shall be avoided, Particularly , the spark shall not be projected against the draft. 7.1.4 In the grinding of the test specimen, it shall be performed on the portion from which the sparks representing the chemical
17、composition of the base steel can be produced. As the decarburized layer, carburized layer, nitrided layer, affected zone produced by acetylene cutting and scales, on the surface of the steel may give different form of spark from that of the base steel, therefore these portions shall be avoided from
18、 grinding. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 J I S G*O5bb 80 E 4933608 0045728 2 G 0566-19
19、80 7. I .5 The .holding pressure of the test specimen against the grinding wheel or the holding pressures of the grinder against the test specimens should be kept equal as far as possible. that the length of spark for approximately 0.2 % C steel becomes some 500 mm long The holding pressure should g
20、enerally be so adjusted 7.1 .6 The spark shall be projected in horizontal or in obliquely upward direction, and the observation shall generally be carried out in the following direction of the spark(1) o r from the sideways direction of the spark(2); Notes (1) (2) A method to observe the spark from
21、the behind of streamlines, projecting the spark in front. A method to observe the streamlines from the side. 7.1.7 In the observation of the spark, careful observation shall be made in accordance with the following items, that is the characteristics of the stream- lines and bursts over each part of
22、the root, center and tip of the spark. (I) (2) (3) Resistance Streamlines (color, brightness , length, thickness and number) Bursts (shape, size , number and dusts) 7.2 Test on Estimation of Class of Steel 7.2.1 In carrying out the estimation of class of steel, the test shall be carried out in accor
23、dance with 7.1 General Rules for Test, and the class of steel shall be estimated by observing the characteristics of the streamlines and bursts and by estimating the carbon content and kinds and quantities of alloy- ing elements based on 8. Criterion for Estimation of Class of Steel. , . 7.2.2 The e
24、stimation of the class of steel should preferably be performed in the procedures given in 8.2. 7.2.3 After rough estimation of the class of steel in accordance with the above procedures, further the results of the estimation shall be corrected by comparing the spark with the standard specimen of the
25、 estimated class of steel. 7.3 Discrimination Test of Foreign Materials 7.3.1 Carry- out the test on the standard specimen corresponding to the test specimen and verify the spark. 7.3.2 Carry out the tests in accordance with 7.1 General Rules f or Test on total number of the test specimens , and obs
26、erve the spark in compliance with 8. Criterion for Estimation of Class of Steel and treat as given in the following: (1) When no dissimilarity with-the standard specimen is found on overall items of observation, it shall be estimated that the foreign material is not mixed in the test specimen. When
27、any obvious dissimilarities with the standard specimen are found on one or more of the items of observation 9 . the material which presenting these dissimilarities shall be discriminated as the foreign material. (2) Copyright Japanese Standards Association Provided by IHS under license with JSALicen
28、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without license from IHS -,-,- I J I S G*05bB BO 4933bOB 0045729 4 M I G 0566-1980 - (3) In the case where any items of observation are recognized as not necessarily be comp
29、letely identical jointly performing analytical tests or other tests, additionally. confirmation shall be made by 8. Criterion for Estimation of Class of Steel 8.1 Method for Estimating Class of Steel The class of steel shall be estimated in comparison with the standard test specimens9 as consulting
30、the spark char- acteristics and examples for sketches of spark. (I) Spark Characteristic of Carbon Steel The spark characteristics of carbon steels are given in Table 1 , Fig. 2 and Fig. 3. Example for Sketch of Carbon Steel Spark sketches of carbon steel spark are given in Attached Figs. 1-1 to 1-8
31、(3)* Furthermore, the examples for the sketches of rimmed steel spark are given in Attached Figs 1-9 and 1-1 O (2) The examples for the Note (3) If not particularly be noted, the examples for the sketches of spark shall be those of the killed steel. Table 1. Table of Spark Characteristics of Carbon
32、Steel Streamline Burst Chape Size Number Dusts No burst (4) - - -.- - -._._ Resistance lelt by hand C% _- Number Few Color Bright- ness Length Long Tblcheas _ I Thick Under U. 05 Orange Red I Dark Bright v Dark - soit O, 05 2-bursts Small 3-burs ts Uultiple- bursts 3-bursts n 2 steps blilple-bun1 in
33、 2 atepi Lii 3 ileps No No No Few I o. 1 o. 15 o. 2 - o. 3 . 0.4 o. 5 No :ommenc dusting Dusty Much - I Large Small v Thick v. I O. 6 O. 7 O. 8 Over O. 8 Y Cornpli-. cated - Thin Hard Short Note (4) No burst is found, but spikes are observed. Copyright Japanese Standards Association Provided by IHS
34、under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 G 0566-1980 J I S G*OSbb 80 = 4933608 0045730 O Fig. 2. Spark-Characteristic Curves of Carbon Steel Q a Ed Angle
35、of Streamline /- na i11111 O 0.2 0.4 0.6 0.8 1.0 1.2 1 . 4 - Carbon content ($) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permitted without l
36、icense from IHS -,-,- Spike (C under 0.05 %) 4-burs ts (C approx. 0.1 %) 3-bursts in 2 steps (C approx O. 2 %) Multiple-bursts in 3 steps with dusts . (C approx. O. 5 $) 2-bursts 3 -bursts (C approx. 0,05 %) (C approx, O. I %) -+ Multiple-burs ts Star-bursts . (C approx. 0.1 5 %) (C approx. 0.1 5 %)
37、 .Multiple-.bursts in 3 steps (C approx. 0.4 $70) Multiple-bursts in 2 steps (C approx . O. 3 %) Feathery spark (Rimmed steel) (3) Spark Characteristics of Alloying Elements The spark characteristics of the alloying elements are given in Table 2 and Fig. 4. Example for Sketch of Alloy Steel Spark sk
38、etches of alloy steel spark are given in Attached Figs. 2-1 to 2-30. (4) The examples for the Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproduction or networking permi
39、tted without license from IHS -,-,- al G ir( d 2 k M ! J I S G*05bb 80 4733608 0045732 4 -8 p : U 8 c u) - ( C 0566-1 980 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo repr
40、oduction or networking permitted without license from IHS -,-,- Fig. 4. Spark Characteristics of Alloying Elements Flash with Split spear- Chrysanthemum White bead. (Si) blob (Ni) head (Ni) Mo ?$ and shapes of spearhead Spearhead with white Foxtail (W) feather (W) Droplet (W) o * - h . b - O,17Mo 0.
41、3%Mo o. 5 7; Mo Split flower (w) . +* h Wavy streamline (W; high- Cr) Intermittent streamline (W, high-Cr) - - - -i Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 09:07:40 MDTNo reproducti
42、on or networking permitted without license from IHS -,-,- J I S G*O5bb BO W 4733608 0845734 8 W 9 G 0566-1980 8.2 Procedure for Estimation of Class of Steel 8.2.1 The procedures for estimation of the class of steel by the method of spark test shall be as given in Table 3-1 and Table 3-2. 8.2.2 At fi
43、rst , make a general classification of a group of carbon steel and low alloy steel and a group of high alloy steel by presence and absence of carbon bursts (the first classification of Table 3-1 and the first classification of Table 3-2). 8.2.3 (i ) For Carbon Steel and Low Alloy Steel At first, est
44、imate C % according to the amount of carbon bursts, and roughly classify into groups of O. 25 $ or under over O. 25 % to O. 5 $ incl. and over O. 5 % in carbon content (the second classification of Table 3-1). If C content is O. 5 $ o r under, the steel may contain Ni, Cr, Si, Mn and Mo, and if C co
45、ntent is over O. 5 5, the steel may contain W and V in addition to the elements mentioned above. . Therefore , examine the presence o r absence of these alloying elements is a carbon steel or a low alloy steel (the third classification of Table (2) estimate either this . 3-1). (3) If the steel is lo
46、w alloy steel, observe the characteristics of the alloy- ing elements and estimate the class of steel from the kinds and quantities of spark. 8.2.4 For High Alloy Steel Classify the steel into stainless steel, heat resisting steel, high speed tool steel and alloy tool steel mainly according to color
47、 of streamline (the second and the third classifications of Table 3-2). As these high alloy steels contain Ni , Cr, Mo , W, V, Co class of steel by observing the kind and quantity of spark of alloying elements according to the characteristics of the spark. etc. estimate the 9. Class of Steel Which A
48、 r e Difficult or Impossible to Discriminate by Spark Test There are steels of which classes are very difficult o r impossible to dis- In these cases, criminate, as their spark are extremely similar to each other. it is recommended to carry out discriminations by using the chemical analysis methods or other testing methods jointly with the spark test. IO. Safety The grinder and its use sha