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1、 STD-JIS Z 3LqL-ENGL L77b Li733b08 053b010 7b0 W UDC 621.791.052:620.179.2 . JIS JAPANESE INDUSTRIAL STANDARD Method of test for seam welded joints JIS Z 31 41 -1996 Translated and Published bY Japanese Standards Association Printed in Japan 5 s In the event of any doubt arising, the original Standa
2、rd in Japanese is to be final authority Errata for JIS (English edition) are printed in Standardization oumal, published monthly by the Japanese Standards Association. Errata will be provided upon request, please contact: Business Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku
3、, Tokyo, JAPAN 107 TEL. 03-3583-8002 FAX. 03-3583-0462 Errata are also provided to subscribers of TIS (English edition) in Monthly information. STD-JIS Z 3141-ENGL 177b Y933bOB 053bO12 533 UDC 62 1.79 1.052 : 620.179.2 JAPANESE INDUSTRIAL STANDARD J I S Method of test for seam welded joints Z 3141-1
4、996 1. seam welded joints of the metallic material of 0.3 to 3.2mm in thickness. - Scope This Japanese Industrial Standard specifies the test method of the lap Remarks: The following standard is cited in this Standard. JIS Z 3001 Welding terms 2. 3001 apply. Definitions For the purpose of this Stand
5、ard, the definitions given in JIS 2 3. Kinds of test The kinds of the test shall be three consisting of leak test, peel test and section macroscopic test. 4. Test material and test Piece 4.1 Preparation of test material Preparation of the test material shall be as follows. (i) Material The material
6、to be used for the test material shall be equivalent to those to be used in the practical works in terms of the kind of the material, the thickness, the heat treatment condition and the surface condition. The welding facilities such as the power source, the welding machine, and the control device to
7、 prepare the test material shall be the same as those to be used in the practical works. The welding conditions to prepare the test material shall be the same as those to be used in manufacturing the practical products. The disc electrode to be used in preparing the test material shall be the same a
8、s that to be used in the practical works in terms of the material, the shape and the dimensions. (2) Welding facilities (3) Welding conditions (4) Electrodes 4.2 Dimensions of test material and test piece 4.2.1 The dimensions of the leak test piece shall be as indicated in Fig. 1 (a). However, the c
9、orner part may be of arbitrary radius R as indicated in Fig. 1 (b) according to the purpose. Leak test piece -,-,- STD-JIS Z 3141-ENGL 177b m 4733b08 053b013 47T 2 2 3141-1996 Fig. 1. Dimensions of leak test piece (a (b) Unit : mm Leak tight weld J . Leak tight weld II I I , 1 I I 4.2.2 Peel test pi
10、ece The test piece to be used in the peel test of the dimensions as indicated in Fig. 2 (a) shall be cut from the seam-welded test material of appropriate size, and finished to the shape as indicated in Fig. 2 (b). In the case of the plate thickness of 1.6mm or over, the test piece should preferably
11、 be expanded using the tool as indicated in Fig. 2 (c) so as not to change the property of the weld zone when the test piece is bent. Fig. 2. Dimensions of peel test material and test piece TI 7ifT2) f r Thickness T, I a 1 - 7 0 . 3 or over to and excl. 1.6 I 125 I 30 1.6 or over up to and incl. 3.2
12、 I 160 I 40 4.2.3 Dimensions of the test material and test piece to be used in the section macroscopic test shall be as indicated in Fig. 3. The test piece shall be sampled from the position except the part 25mm from both ends of the weld line. Section macroscopic test piece -,-,- 40 or 3 Z 3141-199
13、6 Fig. 3. Dimensions of test material and test piece Unit : mm AB rr over 250 or over A : Section macroscopic test piece orthogonal to the weld line B : Section macroscopic test piece at the center in the direction of the weld line 4.3 Number of test pieces The number of test pieces shall conform to
14、 Table 1. Table 1. Number of test pieces 5. Test method 5.1 In the leak test, the test piece indicated in Fig. 1 shall be placed in the restrictive fixture to restrict the deformation as indicated in Fig. 4, the compressed air of the specified pneumatic pressure is fed from the mouth piece of the te
15、st piece, and this test apparatus shall be immersed into a water tank to examine the potential leakage by the generation of bubbles. The test pressure shall be 0.15MPa unless otherwise specified. Leakage shall be examined at the time when the pneumatic pressure reaches 0.15 MPa or at the time when t
16、he expansion reaches 20 mm, whichever comes earlier. When the test is carried out at higher pneumatic pressure, presence/absence of water leakage shall be confirmed using the hydraulic pressure in place of the pneumatic pressure for safety. In this case, the restriction of deformation is not require
17、d. Leak test Fig. 4. Restrictive fixture Nut for Compressed air I (Ti 5 Td G = T , + T, + restricted expansion 20 mm -,-,- 4 2 3141-1996 5.2 Peel test In the peel test, the test piece of 50mm in width as indicated in Fig. 2 shall be pulled by the mechanical method by a tensile tester as indicated in
18、 Fig. 5 applying the tensile load until the weld zone is broken. The maximum tensile load, the fracture position and the mode shall be examined. Fig. 5. Peel test using machine 1F I 5.3 Section macroscopic test In the section macroscopic test, the section macroscopic test piece in the direction orth
19、ogonal to the weld line and the section macroscopic test piece at the center in the direction of the weld line as indicated in Fig. 3 shall be sampled, and the nugget diameter, symmetry of the nugget shape, the ratio of penetration, the blowholes, cracks reaching the surface, lapped nuggets or the l
20、ike shall be examined on these sections. The section macroscopic test piece in the direction orthogonal to the weld line in Fig. 6 (a shall be sampled from the position where the maximum penetration depth can be measured. Fig. 6. Calculation of ratio of penetration (a) Section orthogonal to the weld
21、 line (b) Central section in the direction of weld line Unit : mm Ratio of penetration (%) of thinner plate side Ratio of penetration (%) of thicker plate side where, Ti, Tp : plate thickness Ti 5 Tz = t i / Ti x 100 =tz/TzX100 ti,to : maximum penetration depth D: nugget diameter Unit : mm Maximum r
22、atio of penetration (%) of thinner plate side = ti / Ti x 100 Minimum ratio of penetration (%) of thinner plate side = Li / Ti x 100 Maximum ratio of penetration (%I of thicker plate side = tz / Tz x 100 Minimum ratio of penetration (%) of thicker plate side = tSz / Tz X 100 where, T i , T2: plate t
23、hickness TiST2 t i , 12 : maximum penetration depth Li. t , : minimum penetration depth -,-,- 5. 2 3141-1996 6. The following items shall be recorded after the test was carried out. A part of the records may be omitted subject to the agreement between the parties concerned with delivery. Record Mont
24、h and year, and place of test Kind and plate thickness of test material Chemical composition and mechanical property of test material Welding method (seam welding) Kind and welding condition of welding machine Kind and characteristics of test machine Shape and dimensions of test piece Kind and resul
25、t of test Leak test (pressurizing medium, test pressure) Peel test (maximum tensile load, position of breakage, mode of fracture) Section macroscopic test (nugget diameter, symmetry of nugget shape, ratio of penetration, blowholes, cracks reaching the surface, lapped nuggets) Other specific matters
26、Related standard: JIS 2 3139 Method of macro test for section of spot welded joint -,-,- . , 2 3141-1996 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment: 1957-05-27 Date of Revision: 1996-07-01 Date of Public Notice in Official Gazette: Investigated by: 1996-07-01 Japanese Industrial Standards Committee Divisional Council on Welding This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1996 Printed in Tokyo by Hohbunsha Co., Ltd. -,-,-