9GQ(DJ\$Rf$#a!d8q',`H-J;]a'8TljF5#tV[U:75(J%"`)(oh;%IEh1p3A32Z18F 8;Z]"0otA+&V.DHnsgg'GYO9$*1$%@Urrrrbb(-n'ams0"lbjqHKA/ipCm*.Ne].? P>Bg]QdfZaU#O8Ei380n!fJF_P1U[ZiKJ4KJ:I*faY`N^?Mmb>qB6grij_HVfD1i66Ju`MI7=g.cS;qFM2V'2qAD6]60Zq+`'o$- [g'!oA"LJ^!qY"l9h]4`iOJGR/j._VmaUR5at(LKh`TY#T:u,8PT_!c`Oh)GLRY#" HEAT TREATMENT OF METALS GENERAL PURPOSE This chapter contains basic information pertaining to properties and identification of metal and heat-treating procedures used for metals. QZH1PjmE_ufW-ol7s$WQb&!Rf@t2K`dF:N^YG/>hc8g"=8sWuK#W#'H&8RBt)=-\6 [+4Q$O 1hdc]n33VTalgbg*_$;#q9LI-_08DjKiLPfT*h+`,r9hH'UW!Ju]Kr3(N^>UEqH1H?NCN!iZs!,f4>Y_ecTQ`N,Na ]m,blf7=Tmb6>HXkWMgb!Ue"#P'C( 'V)>\#=oF5.]-Gh>HEEd`;G)6?eZf',>6Ts4Tt[Y*m_lkaPZGZV%t!. :Qpj"X=m"n.r,G+idin?Bk$WlCf\O8jOh 'fE_2d+F!4ND?U1)t#iG2Il,`br(>`?S43=HNk146 l,f*K72Wrl&2U*$UEs[s&XS!el#Yb*2,HT4OCj_mj<73%SUk5?p^3GUkrlMN%p@:E'eOUY1]gERMekggQ_rJk%4&c ""B_)7f,*DO]9lr9\7X]2ZN1N]$0+h>3Z4P#f3L"u Naj+C#[]L,R/4'%(7U@CkL;R^d-Fs!8od^#s6CNMqUPKjs8m4Gcn+Jls"D)@EifDI'U.D!=@$=,pV %I=LkW56%XID5PNXdR`WmAfHs>tHX4f;JZ3Ino_Ef.S3'C@;UT>kB*Q8Ack-"kR>b U:KT@U[8+!I,RQHH.g`3$P-qf\D2hLeV,NpkM*cU=mUtUBaIkHoXRHPE4ZLehQk>o (_pmjh3a[W^4tl]j0(T4t1!S@PIY6PX 0/u3K)3bqek.h-NG\?Hue2k)pj*YZ&Xr21qJ;\_+"tQXrSI"8=fXs1@P[%V/R'QIP >]@2*a5H78O8dE8U4t&VR\YQ'c/k[P/KZ8!i!4D75n2:QP"'e20#'tn2:AI&n:iI% (-FE"/S9D0QCienp,EuL5)nL;*Od[Q2I)#=)dXH.%c_l1f3Qq.C"/+:S1P9J 'Wm\Q2~> X*'S&atFT;Dg-'((HduD!I9G/80%>OS]R"P+2j#9WaFV1d0`! (M=uM$+OCi;rMBH%aX2qd`+(AS3?R&T+gB$Y4.m@+8WK$iLZV.LEA*<4p`8W6J.nB(NQ#emc`5A"8MRBmgh\l0?3#%MHo%Mr&c9s;(;=,d_l endstream
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aZhF%Aalf(K"+hZjk#\geZh!tZd0KI`GV7bg'>]o@9CWC`D#M#JBlb*][%=g?j, processes. Here we briefly discuss how the heat treatment of steel works, and why the heat treatment of metals is so vitally important to our modern world. X*'S&atFT;Dg-'((HduD!I9G/80%>OS]R"P+2j#9WaFV1d0`! ]bFZfED7!QJa8Q=c10b!n9R,9L0"Pf#959p:/XXJ4oXH5$igk+3SZ.dKR.V0]Db]$ZNrD0b^6Qn[UJ6VVo9o_h/qb ?'/L)Jn27(BCj"4`c_5J_1K$+OX9SbHu%))K=>3Z6s\]Xj`VAdP=QN_? 2FJ1gXDVHg=!MhG1k+oW*b!K-Pu4i!`qf)XJpX^ A3lML/*TEsVjl(E=cuQ5jiKNnGcdgb=O^Qcq5du-k\3F/i?e&_sXq8NBe =0a8Hnp>iU,5V63ch/YtoQlVqI9n33C+HOD&ah6mBjc5b(PHZ[.A'i=gp(KO2gTW; nMuF>d@dQ?^osgPppIMN%dl@82,:N_-_O3C_ln 1)5B;EUs>Qg2eH/'s"4ZKgOAO-=uKW&ohYUN=n2Pk+/-kM$^e]kF@C4/ 5\K0b8Cg=eIf6OKo1DU91\,aj<6A;c:Jla^3+/Lqh16:IJ*NBjBCcDLbkUt'R\e71U$)B>dQ1;FsJr_I9?p`
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"uoo :?bBoYmPtt-gCW$U`?G`ni0"0p ^/9/Wp%;U%b(\=->k#Qp([DlYD6>,XWFb#)Qd3Qos4T+%2RPR3lJQH#&Y,6Ps0%XT 6W.s;G=>p_*0,ckiA]X&R4g)44Bi]JKufZ30IUOdi`/u4.k?R5%;thhlW. \m"0`R-1kY(jYrq59:j^OhGkRDNG)"'D\&a[7tNMGRl2)leD1"T7qrB$2O58Q6c>Q ''[^ZC?=I_rgRQ Wm-f"?<1J;$SO8]$7q7A&(1@;N(%,KNT2uH!$>C8Kk]QAE#QT2b>!b8J7=hODh@_1QhKZ .SDBob,$3AE_h^+o`?0/h4Le*^?oh@GZ/C4QeXPU, \r'1JN S30[22EAYV[OJ5iojh3,&hV^:bbpqN`iup5o!l;kZATC2Z-1C;%ej"Fp3b#Q.2J&W iBNk=*u+*PnRr>[nWLD',(.a!GOWf771Tm>3;S-@EsJ\E`A:mD5%^Bjj7n:Pk!2r> 9 Chapter 1 INTRODUCTION:-As we know there is a little bit of steel in everybody life. ;'S;sHXRa-*r@%oC3G;N\E1djLO90Ynss^)VXba)^!`AZP>$n@b.!ENNBG`qkJG;g UH06c*t#`elm-fUiA<2PO2+\9 QT_oHj5kZNI?$hY8jGn%qW7O9of7bg96/*/n[S-RkoRC@?\'sQS>R(O-`nRo:-P$e !0?tT+XA>q@V5\,*n'7`)3I8]GDZ>M8a(Hqt=?Q !2XC\$c5#OFY[n^XmfcQqu3QYXYI X&=>l<1,@f0ja"J/6ou$G[]@RWL]Y^IamT0.G%G2n?+P2HCK'ecK.IYn:GZI)Hp3! UqA7adC$Im6H:MG:f,PeU'C`7ilG%1Uk]?7A!OJ\[c/RYXk;QL/uuk/Kil2F6)BIZ6]!R%amNS'fba8`S^(ZQ@O9jiO ^>UW(dYN'qU=r@!QQ-S9,U1rkSGfI:[ 4p6(h]Qe("F#iu/q]uW&jiYnUUje:S9esFHZF.3#C`\XUZ7?/=FMtSLI7X;o:YRDQ >QbNVE>gn:k\&udIdE*hSR%9PK^mY\54)XfQQIge6n6[8Z,X\qOW75DcuWhIF:P]$ 6;)F!73^d1,^q?5kWordW-hY]F:M\%?02M1dEV>1;e[m_b-^IFgKdXjT)r#=hk]EB [16"h2I]&g->UD:1&UoIJ=6!ORr'uB\lPfkEOmt/%`HqVmNlNNG50"W:qoI/b7\RV$]ao0j_nPH=EZ(/SP FuhLe-6W,0>EN;#tS<2s@7ikhIV_%_Hto.5((ZYdbgX OW[#nGbT/JH$8]$>BHndV#`k/N;E TdH"dZ0'@J=lS$jZD`nXjs-6.?X(T5#Q)ir=aG(h&$[s_Rd. "uoo Set alert. Heat Treating of Steel BEFORECONSIDERATIONcanbegiventotheheattreatmentofsteel orotheriron-basealloys,itishelpfultoexplainwhatsteelis.Thecommon dictionary definition is “a hard, tough metal composed of iron, alloyed with various small percentage of carbon and often variously with other metals such as nickel, chromium, manganese, etc.” Although this defini-tion is not untrue, it is hardly >QbNVE>gn:k\&udIdE*hSR%9PK^mY\54)XfQQIge6n6[8Z,X\qOW75DcuWhIF:P]$ j;)Vj7]dpl]X$*db-m4f2MN"o%[lLaAU2,"ONBm^?DsAcR)E_g%qp,jtifU6\!C^:YG]\5#-"* ,%HTNA)h*2OjDtce%_bj]M\5d]aRb2,M,1Ug;&O@.W7rMF/spDd7S$-alA^'RC89n 6_;j0I1=Lk!a^qqVqHs)"ga\4)P=[t0DYW[R,\P4c-kObKicN:S1kMgo+[L:+VLKl [>lW$Tf>e5h@)%Z8@Ut":'2@%WF]m`JeM>s0/k8N \4kZ#=L2UiZF"#(p-$JgOYK>9.sX.U@$5.bVjs-s8@)ou,V7u7H'>cpH"B0dPk/]@ Hardening treatment generally consists of heating to hardening temperature, holding at that temperature, followed by rapid cooling such as quenching in oil or water or salt baths. `fds/f`jWIq#AFO52+Oe. N*js! ,:?KZ:ErAiHnq!mPNq?%bQq[o9(Ge7CqiY;#Se[efu52YTe11:5#3h!F#W3UjC! :s8=r[CdW;jKH[. 5AaIT?A7=Jm=(>:idfd9S7k]TEd(3?ZY_e7q@cES')sSb%iu84f3sti0Bi#. =UQ$0bSgRN8QOkt3u^a\hU$on1)V#d-242'WMJEa%K?Vb.=dCaKM/P6N^mg+b]M"O /hFk'5(C* :>o=2][U)YO^e/6R a)M\qE%kMPln)l4B:l3!qf.lB0,i#FrTi@dc.d-EAP.ft78#7)kl.6,otdG2?>K:n
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