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("1) (ul-) ++ llil, Al+ 7)71 Fg da-JQ. (rB t2, 13 +=) oJd+, tds-21, "Jd+ Eg ++++. 2. ^l= H|l-st XItj= -Lltrl €I) xl+el Elq cE + .JG)r+ +(s)e- _H_F * 6IBql^.1= eAg + 9l9r,E EllElaltE rtl ^Jql^l ^ilel6}-a Ee1c), +i(si), "Jt(Mn) 3Ctsql Ell6Iq alt-J+. G) 4ltlql *^.1 cE +Eag ae'J4. FD CEE +++ ++$ql Trl4^J ErJel 5d"l 9l e rr E d 4 4 _ s.=ol ^l :alzl el ++%Ig 4l t.Jtrl. (zI) +-E. ,Ieg GC 30, ,tzl HI]6JE SOoh, tsAe1 6zI=*3 1.05o/o, +i9 ,Jf r*g lOozb, "JzJ E +i"*g Zoeb+a- tl4 (-E 1)+ ,Jol rl rlg + et+. 3. hrl= ill=-dtr|. eD hTlql 7lE aal= -*o dul-*zlzl uu| +=+. (+) ^Jzlg 9a441 2+ 4E +=+. (4) ^Jzl 9l"il =.e.= Bq hzl ^JtEzlzl B =tr}. (uI) ]rzl nla€ +Eql 4E] g.=rJs= E"JtrI. eI) hzlE +.J ^J^I"il el6l t*ala +++ e nlql €a6lq gE= t+61 ala++. 4. Hll= = . = . ^= 5fgEttrl. ?D tsIE sEaE .J"J+= F6Iq tL"J+trI. tstl E _ i.zlE +olz} +e€ k"l_e gzl plsil a _ a: *Jg pl4 4lz*6]l FE E?]6r4. (s. 3, -LH t4 *=l (+) 4%I+ *E 3.=..= ^J.J+ + E 3-4Et *g +zlsE alq +ABlq i-2.= 9=Irl 7Jtr+, €-}) tL"J+.I^l +e z)A=- rI = 72u- +ol= +e 6}r ++83 izl-+";6J+. (lH 15 +e) (+) e4* aa.= +46}zl ^l-S6J A+qlE zrlzl 3-48<I +?6Iq a3?- +ol= zll=4t4. (b) -=rZ f,*zl := 6Tr (a) Uz|$(ifl'1 -r aJ 13 =gl "f O) ulr="J(++) =af *xl ^Iil oo -ro o-.1 E 2 uH-dlltls E 3 Hll= 7=^ +01 (a) e]-u- **zl reJ 12 *=:7lel +E7l HI+tlzlel a]S =,J* + +.J uN olzN tr BHI n]] (%) c (%) si (%) Mn (%) -O l:-lT CE Ellit CE -O X.TT ^lH O rL- EIIEI , ^lH oil- -O X.IT . ^l}j O r!- H]]oJ ,\lE oil- c+a El+a z] al Fe-Si Fe-Mn 30 20 50 11 0.5 4.20 3.10 0.30 I.26 0.62 0.15 1.9 1.6 0.2 75.0 0.57 0.32 0.10 0.85 0.6 0.8 0,6 75.0 0.18 0.16 0.30 0.38 Eil+al&{}(%) ,rl lj = 7l OLOE +E4ld{}(7;) 2.03 +1.05 3.08 1.82 x (1-0.10) 1.64 t.02 x (1-0.20) 0.82 txlE(rnrn) tsI E -7.=.] :-ol(mm) 400 - 550 600 - 750 800 - 1000 1050 - 1250 1000 - 1100 1100 - 1200 1200 - 1300 1300 - 1400 -168-