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1、-; r - J I S G*3223 88 4733608 0047753 O , UDC 669.14.01 8.29-1 341624.971 . _ L .* . % - . . . -. . . = . c. . ., . , ,I . - t . - . . JAPANESE INDUSTRIAL STANDARD High Tensile Strength Steel Forgings for Tower Flanges Translated and Published Japanese Standards Association Printed in Japan 6 s Cop
2、yright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S Gx3223 8 m 4933608 0047754 2 P In the event of any doub
3、t arising, the original Standard in Japanese is to be final authority. I Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license
4、from IHS -,-,- . JI$ G83223 88 4933608 0047755 4 UDC 669.14.018.29-134:624.971 JAPANESE INDUSTRIAL STANDARD J I S High Tensile Strength Steel Forgings G 3223-1988 for Tower Flanges 1. Scope This Japanese Industrial Standard specifies the high tensile strength steel forgings, hereinafter referred to
5、as the !steel forgingsf1, mainly used. for transmission tower flanges. Remark: The units and numerical values given in in this Standard are based on the International System of Units (SI) and are appended for informative reference. Further, the traditional units accompanied by numerical values in th
6、is Standard shall be converted to the SI units and numerical values on Jan. 1, 1991. 2. Classification and Symbol The steel forgings shall be subdivided into one class and its symbol shall be SFT 60 (applicable to Dec. 31, 1990) or SFT 590 (applicable on Jan. 1, 1991). 3. Chemical Composition The st
7、eel forgings shall be subjected to the test of 10.1 and the ladle analysis thereof shall be as given in Table 1-1 or Table 1-2. Applicable Standards: See page 7. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not fo
8、r Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS G*3223 ! m 4933b08 O047756 b Up to and incl. 125 SFT 60 Over 125 2 G 3223-1988 0.18 max. 0.35 max. 1.50 max. 0.030 max. 0.030 max. 0.20 max. 0.35 max. 1.50 ma. 0.030 max. 0.030 max. Table 1-1.
9、 Chemical Composition (Applicable to Dec. 31, 1990) Up to and incl. 125 SFT 590 Over 125 Unit: % 0.18 max. 0.35 max. 1.50 max. 0.030 max. 0.030 max. 0.20 max. 0.35 max. 1.50 m a . 0.030 max. 0.030 max. Thickness of c 1 si I Mn I class Of I flange (product) Symbol of class Charpy absorbed energy or p
10、roof strength Impact test kgf*mJ Yield point Tensile % kgf /mm2 stress temperature N /mm2 1 No. 14 A test piece O C No. 4 test piece kgf/m2 N/mm2 1 Remark: Alloy elements other than those abovementioned may be added, if necessary. ST 6o Table 1-2. Chemical Composition .4.8 min. I (47.1) min. 17 min.
11、 45 min. (441) min. (Applicable on Jan. 1, 1991) Impact test temperature Yield point Tensile Elongation syOfol or proof % class N / I l d N /mm -No. 14A test piece OC SFT 590 440 min. 590 to 740 17 min. - 5 Unit: % Charpy absorbed energy J No. 4 test piece 47 min. class Symbol of I Thickness flange
12、(product) of c /SilMnIP I S Remark: Alloy elements other than those abovementioned may be added, if necessary. 4. Mechanical Properties The steel forgings shall be subjected to the test of 10.2. The yield point or proof stress, tensile strength, elongation, and Charpy absorbed energy thereof shall b
13、e as given in Table 2-1 or Table 2-2. In that case, the Charpy absorbed energy shall be average value of three test pieces. Table 2-1. Mechanical Properties (Applicable to Dec. 31, 1990) Table 2-2. Mechanical Properties Copyright Japanese Standards Association Provided by IHS under license with JSAL
14、icensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- I+ I I JIS G*3223 8 I 4933608 0047757 SMI 60 Over 125 3 G 3223-1988 0.55 ma. 5. Carbon Equivalent The carbon equivalent of steel forgings
15、shall be as given in Table 3-1 or Table 3-2. formula by using the cast analysis of 10.1 The carbon equivalent shall be calculated from the following . SFT 590 Over 125 Carbon equivalent (%) = C + + + - + 5 + 4 + - - Mn Si Ni Cr Mo v 40 14 0.55 max. Table 3-1. Carbon- Equivalent (Applicable to Dec. 3
16、1, 1990) Thickness of Carbon equivalent class I I I I Table 3-2. Carbon Equivalent (Applicable on Jan. 1 , 1991) Thickness of Carbon Of flange (product) 1 equiylent I mm class I I 6. Shape, Dimensions and Tolerances Thereof The shape, dimensions and their tolerances of steel forgings shall be a, as
17、agreed upon between the delivery parties concerned. 7. Appearance The appearance of steel forgings shall have- a good finish and shall be free from cracks, flaws, etc, harmful to use. 8. Soundness For the soundness of steel forgings, they shall be free from defects harmful to use. Further, the crite
18、rion for acceptability of the soundness of steel forgings shall be as agreed upon between the delivery parties concerned. 9. Manufacturing Method 1 9.1 General Matters for Manufacturing Method General matters for manufacturing method shall be as described in 3. of JIS G 0306. Copyright Japanese Stan
19、dards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- I J I S G*3223 88 sl 4733608 0047758 T 4 G 3223-1988 9.2 Steel forgings shall be
20、worked by forging corresponding to not less than 3 S in forging ratio from ingots. However, in the case where steel products obtained by rolling ingots are used, the steel products which have been worked by rolling corresponding to not less than 3 S in forging ratio are used to be forged. 9.3 Steel
21、forgings are heat treated by any one of normalizing, normalizing tempering, or quenching tempering. out, tempering temperature shall be not less than 55OoC, and its retention time shall be a ratio of not less than 30 min per 25 mm to the maximum thickness. In the case where tempering is carried 10.
22、Tests 10.1 Analytical Test 10.1.1 General Matters of Analytical Test General matters of the analytical test shall be as described in 4 . 1 of JIS G 0306. 10.1.2 Analytical Methods The analytical method shall be in accordance with any one of the following methods. JIS G 1211 JIS G 1212 JIS G 1213 JIS
23、 G 1214 JIS G 1215 JIS G 1216 JIS G 1217 JIS G 1218 JIS G 1221 JIS G 1253 JIS G 1256 JIS G 1257 10.2 Mechanical Tests 10.2.1 Test in General General matters of the mechanical tests shall be However, sampling method of a test as described in 4.2 of JIS G 0306. specimen, the number of test pieces, and
24、 sampling position shall be as follows: (1) A test specimen shall be sampled from a steel forging body or a body long margin. However, when the following conditions are satisfied, another forged test specimen may be prepared to apply to a test. (a) The same melt as the steel forgings is used and pro
25、cessed by the same kind of hot working. steel products obtained by rolling an ingot are used, the hot rolled product may be left as it is. However, in the case where (b) The maximum forging ratio is not more than the minimum forging ratio of the steel forgings. (c) The test specimen is processed by
26、the same heat treatment in the same heating furnace as those for the steel forgings. (d) The thickness is not less than the maximum thickness of the steel forgings. (2) For the numbers of a tensile test piece and an impact test piece, the same melt, the same heat treatment, and similar dimensions ar
27、e made a lot, and one piece of the tensile test piece and three pieces in one set of the impact test pieces are taken from a test specimen representing the maximum flange thickness of each lot. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111
28、111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- r J I S G*3223 88 m 4933608 0047759 1 I I 5 I G 3223-1988 i (3) The sampling position of a test piece shall be as follows: (3.1) The test piece is sampled parallel
29、to a main forging direction. However, in the case where steel products obtained by rolling an ingot are used, it is sampled vertical to the rolling direction. For the steel forgings to be normalized or normalized and tempered. (3.2) The centre of the test piece shall be inside by not less than 1/4 T
30、. Herein, T indicates the maximum thickness in heat treatment of steel forgings or another forged test specimen. For the steel forgings to be quenched and tempered. (3.3) The sampling position of the test piece shall be in ac- cordance with either of the following provisions. (a) The centre of the t
31、est piece shall be at a position of not less than 1/4 T apart from one heat treated surface and not less than T apart from a second heat treated surface. The centre of the test piece shall be at a position of not less than the maximum distance (tm, among distances from the top of a hub and the root
32、of the hub to a heat treated surface nearest thereto apart from the heat treated surface and of not less than two times tmax apart from the second heat treated surface. However, the centre of the test piece shall be not less than 20 mm apart from one heat treated surface and not less than 40 mm apar
33、t from the second heat treated surface. (b) 10.2.2 be as follows: Test Piece The tensile test piece and the impact test piece shall (1) No. 14 A test piece of JIS Z 2201. (2) No. 4 test piece of JIS Z 2202. 10.2.3 Test Methods The test methods shall be as follows: (1) The tensile test method shall b
34、e in accordance with 4.2.2 (2.5) of JIS G 0306. The impact test method shall be in accordance with 4.2.2. (2.6) of JIS G 0306. (2) 10.3 Ultrasonic Test An ultrasonic test may be specified by the purchaser, The test method is treated similarly to JIS G 0587. Copyright Japanese Standards Association P
35、rovided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S G*3223 8 I 4933b08 00499b8 B 6 G 3223-1988 10.5 Appearance Test The appearance test of steel f
36、orgings shall be in accordance with 4.3 of JIS G 0306. 11. Retest The retest of the mechanical test shall be in accordance with 5.1 of JIS G 0306. 12. Inspection 12.1 Inspection The inspection of steel forgings shall be as follows: ( i ) General matters of the inspection shall be as described in 6.
37、of JIS G 0306. The chemical composition shall conform to 3. The mechanical properties shall conform to 4. The carbon equivalent shall conform to 5. The shape and dimensions shall conform to 6. The appearance shall conform to 7. (2) (3) (4) (5) (6) (7) The soundness shall conform to 8. 12.2 In additi
38、on to the inspections of 12.1, the purchaser may specify the following inspections. In that case, inspection items, test methods, and criteria for acceptability shall be predetermined between the delivery parties concerned. Magnetic-particle examination ( ) , and liquid penetrant examination (2 ) No
39、tes ( The magnetic-particle examination shall be as specified in JIS G 0565. (2) The liquid penetrant examination shall be as specified in JIS Z 2343. 13. Marking. The steel forgings accepted by the inspection shall be marked in ac- cordance with 7. of JIS G 0306. 14. ReDort The report shall be as d
40、escribed in 8. of JIS G 0306. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S G*3223 88 I 4933608 00
41、477bL T I I 7. G 3223-1988 / ab- Applicable Standards : JIS G 0306-General Rules for Inspection of Steel Forgings JIS G 0565-Methods for Magnetic Particle Testing of Ferromagnetic Materials and Classification of Magnetic Particle Indication JIS G 0587-Methods for Ultrasonic Examination for Carbon an
42、d Low Alloy Steel Forgings JIS G 1211-Methods for Determination of Carbon in Iron and Steel JIS G 1212-Methods for Determination of Silicon in Iron and Steel JIS G 1213-Methods for Determination of Manganese in Iron and Steel JIS G 1214-Methods for Determination of Phosphorus in Iron and Steel JIS G
43、 1215-Methods for Determination of Sulfur in Iron and Steel JIS G 1216-Methods for Determination of Nickel in Iron and Steel JIS G 1217-Methods for Determination of Chromium in Iron and Steel JIS G 1218-Methods for Determination of Molybdenum in Iron and Steel JIS G 1221-Methods for Determination of
44、 Vanadium in Iron and Steel JIS G 1253-Method for Photoelectric Emission Spectrochemical Analysis of Iron and Steel JIS G 1256-Method for X-Ray Fluorescence Spectrometric Analysis of JIS G 1257-Methods for Atomic Absorption Spectrochemical Analysis of Iron and Steel Iron and Steel JIS Z 2201-Test Pi
45、eces for Tensile Test for Metallic Materials JIS Z 2202-Test Pieces for Impact Test for Metallic Materials JIS Z 2343-Methods for Liquid Penetrant Testing and Classification of Indication Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001
46、, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S G*3223 88 U 4733608 O047762 L U G 3223-1988 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment : 1988-10-01 D
47、ate of Public Notice in Official Gazette: 1988-10-03 Investigated by : Japanese Industrial Standards Commit tee Divisional Council on Iron and Steel Technical Committee on Steel for Tower Flanges This English translation is published by: Japanese Standards Association 1-24, Akasaka 4,. Minato-ku, To
48、kyo 107 Japan O JSA, 1989 1 Printed in Tokyo by . Hohbunsha Co., Ltd. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:48:21 MDTNo reproduction or networking permitted without license from IHS -,-,-