KS D 0422-2007 Method for evaluation of hydrogen delayed fracture resistance of high strength steels for bolts《高强度螺栓的氢抗延迟断裂性能进行评估方法》.pdf

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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D 0422 KS D 0422: 2007 2007 10 29 http:/www.kats.go.krKS D 0422: 2007 : () ( ) () () () ( ) : (http:/www.standard.go.kr) : :2007 10 29 20070950 : : ( 025097274) (http:/www.kats.go.kr). 10 5 , . KS D 0422: 2007 Method for evaluation of hydrogen delayed fra

2、cture resistance of high strength steels for bolts 1 . 2 . . ( ) . KS B 0802, KS B 5521, KS D 0048, ( ) KS D 1777, KS L 6003, KS L 6004, KS M 0001, KS M 0031, KS M 0127, ( ) 3 KS D 0048 . 4 1 . KS D 0422: 2007 2 : mm . , . 1 5 . a) ( ) . b) . c) KS B 5521 . 6 . a) 0.1 N NaOH : 1 L 100 % NaOH 4 g . b

3、) 3 % NaCl 0.3 % NH4SCN : 6.93 L 100 % NaCl 210 g 100 % NH4SCN 21 g . c) 460 g Cd(BF4)2 427 g, NH4BF4 48 g, H3BO4 21.6 g, 20 g . pH 3 5 , pH H3BO4 . d) . 7 . a) 1 . 6. a) b) , . . . Ai /= : (A/m2) i : (A) A : (m2) A 700.5 150.5150.5 100.05 R 0.10.0160.05 M10 A 452 KS D 0422: 2007 3 b) , 24 . c) 0.1

4、M 0.1 M HCl 30 6. c) , . 1.2 1.3 V , 5 6 15 m . . 8 . a) . b) 0.5 0.9 . KS B 0802 . c) 150 , . d) 3 . e) . 9 . a) 2 . 2 (ap/nb) (h) KS D 0422: 2007 4 b) x , y . c) 150 . d) , . 10 . a) . b) . , . c) , , . 0.6 0.7 V , 5 . KS L 6003 KS L 6004 . 11 , KS M 0031 . 12 . a) ( , ) b) ( , , , ) c) d) e) f) g) h) 135513 7017 (02)60094114 (02)600948878 http:/ KS D 0422: 2007 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Method for evaluation of hydrogen delayed fracture resistance of high strength steels for bolts ICS 77.040.00 Korean Agency for Technology and Standards http:/www.kats.go.kr

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