186page

[.Eil oJ 4lz] $"ti) 1. -t.x1l= l+6|.ilJ48xl= )l-=:dtr|. (,]) ^I++ knlel 2-+lxl= oN++. (+) Eil"J 1+lzl= oN+4. eI) B4+ +t .+lzl= oN.J4. (4 Eiil ^9lzl= oN.J4. 2. rfl-EE Sg-Ll'tl. eD +-E +q ^JEql wl4rl ^J"J alt}6'Iq ^J"J zIEE9 eq6l 41"*++. (g. 1 +z) (4 tsIEI 4lt€ 4lE= kl.ilql 7}ts6.J ^l'J6.IAl ^J"J6Iq s.gol +Al *;x9E+ 6Iq=+. eD .EIoJ4: z};l E= aag *"J+trI. e) tL.J S-?dg gHI4 o-tr = trJq4= Ez] B {iz +g "dqfl= Hl +++.rl zl,J6}Al * .J 6Jtr}. (rB 5 +=) eI) *"J ll.tr= "JHql kql -E+ ^J"J+ f $,zl ox Eql *dllg 1a!ot) ule} =+4 +zl*.J++. 3. Ed[|+g= :Lltrl. ?t) zlB =El ss. dFg +"J6Ia zl*.gxl (power, s/w)E ON+4.(rB 6 +a) (4 =q d$g #7Ig 9zl e*s+ ^l^]al gil+. eD +g +E= lgqlE 2okglmin, FHat+El= Zlkglmtn o E 6Iq=+. e) dq +=g 1tr] t"; =*g E 4o-6ogoil *"tl + + 9lE+ +++E de.J+. ("I) *aI6 HAzl €tol ^8zlE +ge-l floJol 9sE AB Fe_tr ts4= a^J EqEqTrE .r-l +Bg rtlo} t4. GD +6lEf hqql €4:zl E9 gleH =?llr +dxl= +q^l €rJz= ,I4++. 69 $alSal 4+ a4E d4=*es *dl= 414 oJ4. oI) k.E *rlql 44 +zls zl?9 .J"J6ll^l + *rl,*zl *"rlE al++q. 6I) +6il71 +EqE =rJ zl4 ^17J, = ,J +E^l ,J Fg A"J6Iq *'* *s= 4€+ 3sE- E z Ag ZltlZt ra s ag g.eJ El 6I --I 7 .I , ^l o (%) + A '1 HIE}4II C s 0.08 0.06 Si < 2.00 0.70 Mn s 2.00 1.00 Ni 8.00-11.00 8.50 Cr 18.00-21.00 P < 0.040 S < 0.040 ral 6 r+tr|- fiEE 7l= trJ'J -178-