る0～70kg/mm2級高張力鋼の溶接性,加工性および水力機器

1 : : : 0 70kg/mm2 , . ( -, ). Studieson Weldability and Workabilityof60 70kg/mm2 High-StrengtbSteels and Their Application to HydraulicTurbine Parts(Partl-BasicInvestigation). * * *. Itsuhiko Sejima MasaoIshibara Tetsuo Okuni * *. Sbicbiz6K6saka TatsujiWada . , ( HT ) ,HT ( , ) . , (1)(2) 60 70kg/mm2 ( . HT60,HT70 ) HT ( ), . [ ( Bond ), ( HAZ ) ( ) , , , .. (1) HT60 , . (2) HT70 , HT60 .. (3) HT60 Nb, . (4) HT , HT , i .. ) . 1 . 1.. HT60 HT70 1 HT60. 1964 , 10(Rive Ace60) (Welcon-2H-Super) (Welten-60Ii . 110,000kW HT60 .. (Welcon-2H) (Welcon-2H-Super) ( (1 Velten-60H.. , , . (Welcon-2H-SuPer) (Welten-60H.. ,HT60 HT70 ( (River-Ace60) (Welten-60H.. (1) . (Welcon-2H). (Welcon-2H). HT60 , (River-Ace60) (Welcon-2H-SuPer) (Welten-60H. _ _.. HT . (Welcon-2H-Super) ( (1 Velten-60H. , HT . (W`elcon-2H-Super). ,HT , , )(WelcoIl-2H).. ( (Welcon-2H) )(Welten-60Ii 1 C (Welten-60H.)))))))))]

2 , . , , .. HT60 ,3 (Welcon-2H(Mn Si ), 2. River-Ace60(Mo- ),Welten-60(Cr- )), HT70 , 1 (Welcon-2H-Super(Ni-Cr-Mo )), HT60 ,1. HT60 3 , HT70 1 (Welten-60H(Ni-Nb- )) 5 16 . , HT60 1 5 , 46mm . HT , 2 .. 3. 4 , , . 6 , F .. 1 , , HT60 L ,LB162( ), -60( ) 2 , , , , HT70 ,LH70S( ),LBlO6( 2 ..- , ,HT. 6P ,US49 MF38( ),Y-DMxYF-15,Y-D 1 YF- 15 ( ) 3 ,HT70 US49 PFH8() . *. US70 IF38( 2 , IiT60 Y- 13- 398 5 .. m );c si P s Vl Cr ( J )( g)1 -2tR kg-n-/cm2. A 23 :180J Q-1 . 0 22 0 10 1 0 . B 52 62. 28180 ! l 0 . Q-T . : : ;Z ; ; ;;!:::; i: :; 0 ::;; 1 : l l C 30 68 ;1800 . 1. D 34 061 30 51 63 30 1800 . E 42 :- 50 69 33 0 :-5 1 :Nor . Ceq(WES =C Mn si Ni cr Mo ! ;). 3 , .. EL .. (% % 1 :kg-m/cm2). 1HT60rf .. LB62 Welcon-2Ii 0 023 :RT AsWeld ( ). 0 34il 04 013 0 13Lo 51. - l l 1. L-60 Welten-60 : - 29 HT60 J ( ). !0 0710 6810 95. : . l L. l LH70S Welcon-2H Super Cr 28 L HT70 ( ).)

3 LBlO6 Welcon-2H-Super . 1. 27 23 5 RT !AsWeld 20 0 RT)lAsWeld HT70 ( ).. 0 008iO 1 70. US49 1iF38 Welcon-2H 65 32 RT' !AsWeld . ; L. 0. 1. 26 ) As Weld . Y-DMxYF15 River-Ace60 . 0 034: l ;. 77 24 .0 ) As Weld . US49 PFH80 Welcon-2H-Super 0 42; . l US70 MF38 Welcon-2H-Super ; 81 21 0 )lAslVeld .. Y-DMxYF15 Welten-60 0 j As Weld . 69. 0 AsWeld .. Y DMxYF15 ;Welten 60H l l XI ) AsWeld . Y-204 YF15 welte -60H ..1.. ----608 . -t . IJ. 1 . - .. ? .. U..1-A . J+. = 1 ) .. h .. 1 . HT Ril er-A e60L: 60. HT60 relt -60H 60 jO. HT70 l p!rDn-2H-SuPPr.!LH70S _ 1. 170A150mm hin 23 '. r . HT60. 30 34. 0 - 2 HT60 , . 5(I. (_ 1 ) 11 . 1 HT60 HT70 y jt) y . (JISZ3158-1966) . DMxYF-15 ,Y-204 YF-15 ( ) 11 1 HT60 HT70 y ( . jt) , HT60 ( 34m ). , ( ), ( 100 , ( 18mm) 50 . 1 . 2 . , 20kg-m/cm . , 10kg-m/cm2 , , (3)(4), . , 5kg-m/cm2 300 F ,HAZ. ,HT .. 2 i , 3. 800 300 (4)((1) ).

4 , , . HT (3) . 14- 60 70kg/Inll12 ( , ) 399. S = 12111(;l 21. 1 )A21V15nm Iin == . 1 14 6 1 ;. 1 TOA2 2 Omm mjn JF HT60 11'tl t 60H . 111 . 1l pI n- H-SUP- .. HT60 Un-2H. 300. / /// i--35i ------ . ---------8 . r L .. U . ! ---1 === := 3= = =5p =. l . :P ). : . 1 .. (U +_. 2S=. 71). 1 3 4(1 '5 lj Tl). 1 ( ) t . 5 . ; : r)HAZ ; : . ; ] ! :RT. 3 f7iTH6 ) Welten--60rIly .; 100 14 HT60 HT70 . 4i .. 1 ; - lVES . iJ f . 1. Al 170.. ( J. 23 26. -l . Lmm/minl 150 i 20 .. :deg GL=60mm 22.. =120ml ..it . 43 . m(LH70S)4nllTl L n . HN OU L +. ]1 LII70S 4mm 170 23 26 15() 50 l L 23 43 . ( . U. (LH70S 4m111 170 23 26 150 _00 43.. 1 ( H7(lS)4mnl 170 23 26 150 150 i L 43 . (L-60 4m11 170 23 26 150 20 : 42 21 34 . 42. HO? - L ). ( L-60 4mln 170 23- 26 150 100 34 . Ou . ( 35+. Y-D YF15 700 33 240 20 58 34.. 1X Y-l )MxYF15! 45() 30 240 20 ; 34 . 90 j . 5=. 2(60E J / )1 3 U.))

5 50 .. - . 3 U. ; a 1 ) . ; i . -i 2m n 5 U..( ) -@ . 2 nm ,5 Bond i (800 500 300 . E: . (s)) 22s ( . / .. L O (U .. l . N 3. 300mm_ in . 500c > 1 m=. J: Al = (. C. 4kg m2. 250. T. 7 ( ). a-, . 42rnm (mm). 1 . 1 - . J: L-- . Y -Y----X. :Constant( ;=1) 200 200. HT70 HT60 ! i i . () 1 2 3 4 5 0 1 2 3 1 5. , l ( 300nlml 150 , f .' I 1`mm rmm . ( 16mm) 100 ( IJ +!: Hl 60 rl -elten-60 ( )(B: T60. Ri er-A e r_ . HT60 HT60 Nb, . 5 . ( 42mm) 200 . , HT70 . 3 HT60 . , )HAZ 4 HT70 HT60 . HT70 90 . , 50% HT60 . WES , . 4 HT / . HT60 , HT70 , HT60 . HT60 . HT60 (Welten-60H), HT70 Hv=410 , HT , . HT60 (Welcon-2Ii) Hv=330 1 ES , . (5) HW45 HAZ Hv=400,HW63 Hv 5 HT60 (River-Ace60)34mm, HT60. 440 , HT60 (Welten-60H)42mm . 15w 400 43 5 50 5 . 5 ( ). l (1).. 80e 1 60 Il'eIcon-2H)23mmt >. Ln 80 . - N. J. M. 310. 700 135 . 7- : L - . 90 145 i :4mm :180A.. / . T-1. 7 s 7 . 80 L.)))

6 7 . 6 HT60 (River-Ace60)(Y-DMxYF15). TN P. m fF dl( (A Il ( El m . 1 . O. l .. 353535.. 18. 5R.. 35 3535. 5. 5 . 22. 3535 . 6R.. 1J i . 5 36 110---- . 5 36 . 26 220. 36 . 36 . 2) I+ JISZ31124 . 3 34 1 : 440 34 _!L . =j/cm)= . River-Ace60 , 5 Hv=270 , , . HAZ 1mm ,Welten-60H , Hv= 5 . 310 ,HAZ , WES,HW45 h , . Hv=400 Welten-60H . , , . ,40mm HT60 . , HT60 50 100 . 4.. 1 . HT , HT60 . , , . HAZ Bond . ( HT (River-Ace60) 18,22,26. ) 34mm , , , , 5 HT60 (Welcon-2H) , ,7 .. , , . 70 90 , 26mmt , 5 (2) HAZ . (4) (2) 400 2 30% . ,(3) 600 (4) 100 ,HAZ , 40mm Bond ,Bond . (4) ( , . 100 ,40mm ), 7 . HT70 150 ,40mm 200 60kg/mm2 ,0 2mmV . -16- 60 70kg/mm2 , ( , ) 401. 150 C 60kg/ m2 . 240 HAZ . 60kg/ m2 .. 38. =::= HAZ 100-c 09c6kg-m/4m2 . 230 00c6kg-m/4 . 80. 150: . 220.. 210 . 0. >. = !100`c (E] . 200. 1500c JJ190 . 1008c - . 60 200qC ' . 180 . 170. 50. 20 =Z =.))

7 : Bond 18. :::::::::::: HAZ. 6 . N ) . OD. 4. 18 22 26 30 34. 2. mm 0. 7 HT60 i . RU. U.. (M). 6 M):F (h t). hU. ( 1). (N j . 11:HAZ. -U. 0. 65 LD): . N ) . T ). 64. (D H_.(D H).. (H). U. 3 (H D). H. ( ). 55. 62 (HJ. ;. 61. (nC) 100 150 100 150 100 150 100 150 100 150 100 150 1 , . 50. ( 03j l 62,6 79,8 m) 18 22 26 34. TP No. 10 11 12 13. 575 c 6050c 630 c 575 c 6058c 630 C.. xl,5h 6 , , . , , ( ; Ace60)) 8. i 7 . (HT60 ). J . 6kg-m/cm2 . Ril er-Ace60 34mm llre On-2H 23mnl 7 l 72kJ/ m US49 tF38 32-81kj/ m 2 L. 200 5 4 .. TP 34mmt, 18 .. HAZ.. , 34,000j/cm ,HAZ Bond 16 . H Z .. /. 0 10kg-m/cm2 HT70 . 14 Bond . 11 .. 0.. 12. //. ) . 1. /. HTdO / 10. /. HT Bun(I . i . 8 J. //. , , . 8 HT60 . x 6. (River-Ace60,Welcon-2H)2 . 7J 575 c 6050c 630 c ) 575Dc 605Dc 630Cc ,605 ( . , . 630 55 60kg/cm2 9 (HT60 ). 9 . YF15) (US49 MF38) . =6kg-m/cm2 10 River-Ace60 . HAZ , 1.

8 (Y-DMx ,HAZ( . -17- 402 43 5 50 5 . HAZ. D . x Y--- . O U . ( . /. r/. X/. /. 9O ) . > ,- /. n-0 . B.. M. Ril er-Ace60. O. 34m . 170 nd 1' DlI 1 F15.. K. 72kj// m . 160. 5r . l m 10 i (HT60 ). HAZ. ( ). 5800c3h .. /HAZ. 1 . /.. HAZ. /. /. /. /.. /.. ( > . ( ). /. 15..H . 0.. /. / . ll elcon-2H-SuPer 30mm . TS49 PI H80. 30-35kj/ m 20 0 20 -20 0 650 SR. (Oc) dc) (River-Ace60 72kj/cm). 12 HT70 11HT60 ( 100). 7 HT70 (Welcon 2H-Super) . (JB) .. (A) i (,) i (mm/min) (kj/cm) (kg/mIn2) R=19mm1800 (30% ). 1 500 35 350 30 . 200qC . 2 500 34 32.. 320 (1 ) . US70 MF38.. 500 34 320 32 580 SR . 46.. 500 33 320 31 3h .. 500 35 300 35 . 810.. 500 35 330 32 (1 ) . 10 US49 PFH80. 580 SR H70S5 220A.. 3b ) (1 ) 3 . ( ) . HT70 Mn,Si,Ni,Cr ( ) 12. HT70 (Welcon-2H-Super)30mm US49 PFH80 . 7 35kj/cm ,Bond . 580 ,580 , , (US49 MF38), Eo 9kg-m/cm2 13 . (US49 PFH80)( 3 ) 72 74 11 HT60.)

9 Kg/mm2 , , . , MF38 ( ) 14 . ,HT80 PFH-80 10 HT60 , Hv -18- .. HAZ.. B. /. O. 5800c3Il nd S R. / . X . 11- .. llre con-2H-SUPer 30m m / US49 PFH80. J. X 30 35kj/ m . l mm 14 IiT70 . 580 3b SR. ( 1con-2 Super /cm). 13 HT70 ( 100). 8 HT60(Welten60H) . -,Eo(kg-m/cm2).. Bond . R=2t . (A) ( ) .. 25 1800 1lL 3.. 49 6l63 8. _ _ .. 33 590 22 Oi 1800 . 34 625 1800 24 3 . 34. 900 . 2 .. 900 _,_ _ 1. 34 ! Jpllen-60 3 . _ ___. 2 . 12 15! 620 34 46 J 2000C. 590 2 >10 C 3 ! : 00 590 .. L-60 ( ) GL.. 220. 60. Y-DM. X . 600 590 GL. N . 280 YF-15 . + ___.. 34 GL. 60. ll pi en-60 600 590 GL. llrplten-60rl 60. 250 260, Hv200 210 =57kg/mm2, y=42kg/mm2 . , . , ( 12) , , . ,HT70 ( )Y-204 YF15 .. HT 0 (6) 15,1 . HT60 (Welten-60H) HT60 ,Bond . (Welten-60) , ( ) YIL15 .. 8 , .. ( y 45kg/mm2, 60kg/mm2) , 60kj/cm Bond , , . 19- 404 43 5 .. 50 5 .. 14 . l+ . >---- ( ) Y-D YF-15. lVelten-60H 42t --- - = Y-D Y 15.

10 Y-D YF-15. ----- ( ). 1' 204 XYF 15 __ 350. ( . 9000c-SR590 3h 0. ) . SR590"C3h ( . H . r) . SR590 c3h / . : > . (hV. d /. // R5900c 3h 7r 900 c 4. +T . = / = . `.. / . 900Dc SR5908c3h / 1mm -20 0. J ( c . 15 . ( HT60 ) 17 ( HT60 ). ll'e le 60H42mm . >- - -Q. O c lr-D 1'F-15. 12 . -200c aX =60k m .. -u L ` - .. X /. /. / . B. O. nd / /. __ ..X. SR SR !7 H. ) 590Dc 6250c 9000c 9000c 2 31 A. 3h 3h 2 3 Z. SR5 eC SR5 C. 16 Bond . ( HT60 ).. Bond , . , Nb, , . Bond . , . 8 Y-DMxYF15 590 3h SR. 47kj/cm 590 Bond . ( ). =6kg-m/cm2 HT . 18 HT60 (Welten-60H). , HT . ( 100). 17 . HT60 HAZ , . Hv=300 , 150 ,200 20 . HAZ 40kj/cm(135A,23V,5cm/min) . 18 Welten-60H , 9 , 19 , . , WES E_5=6kg /cm2. HT60 , ,HT60 . 40kj/cm ( . ) 200 . , . , , HT70 . 10 , 20 77kg/mm2 . , , . River Ace60 Bond, 20 , . -20- 60 70kg/mm2 , ( , ) 405. ,Bond,HAZ 9 HT60 (River Ace) ( ). db . HT60.)