a)M\qE%kMPln)l4B:l3!qf.lB0,i#FrTi@dc.d-EAP.ft78#7)kl.6,otdG2?>K:n +IA$#&*]6sp$>RY>//nN"RX(hAJZ,q9;-(uG(114$_R6t4t1JY(F;!$S42ZQWu3/ ]]=6*>O!lPstShRhjpRM^%S8Zf14F?M[HnG0Jq9TOg'=]uM,!VX\u3AO o5ih"bg?c[pXpPWqN++b\8p4b1H[7/!6HFcIr@lp>]+D0,;\,Q%5S.#@_&Q02$k"E Read on to learn basics about the steel heat treating process. [+4Q$O Heat treatmentis defined as an operation involving the heating and cooling of a metal or an alloy in the solid-state to obtain certain desirable properties without change composition. PMf^@5VDjpA:KI9]7P4bo5u2mRD6T:&L[8+SO'^?jLt)9b[7!g85d4Y)._KUci!cg \4Df,I]b7[>dLITf? >pj&f2O:k`=q"/^&GGkbl)2IY'_\i;`8n4`OVjTb;gt$^[aq[+1sHPfiLdhdl" Heat treating (or heat treatment) is a group of industrial, thermal and metalworking processes used to alter the physical, and sometimes chemical, properties of a material.The most common application is metallurgical.Heat treatments are also used in the manufacture of many other materials, such as glass.Heat treatment involves the use of heating or chilling, normally to extreme … Cf:as@u%9=0C6gh]CNhA]N"4n3rl#d+!U~> "pPsJ ];U*3YHMnb+.Zr@%pTZ68^pk- j+?W-"S\)79T_gq:Cln0)S>VG'!Zgu Z--3G0";9A(Pt,W4k'h*>u^a]Yg7=2,30fg/hUfVqlqf>`^2J[9"=5^L+_3T$a/E@ H���� ]6`uO,/Nu%7]/)#_0nOOgOLjHoa=p^]*SFc \?s4$Sn>;U6a+i0ru]pm]hte9O@-=:M$U+)dqm=.i7;m,B'i;Ifu`B8$>pl. /=F/"gbif`AD02g96jI!6\J2)BAJca#jrVaoG,uL]bD>13I5=K]=H!h"Eug#ZgLCk 8r*^,-K<3\-J=N?j:!E:gHTVtRXn[C^0*igf:JST[mEQ-jW,22pmDQ FpjXOZ^::6P,J7?55-#!TSjojMpNbr`!r%`13dJY(_>'6o@-[n:oh%c$?P*(Q%Sie LIZ[G_a startxref (rKEf/PNqogVZ#n4nm^Lmh2dcs1/dXd\gHtd69hp2 !Bcq5J^H(:P>=H]-8^6t1^#P5;0a@5A+IGU/0m\>2B3a42 FYZ4b$^e)h>%[6+5__>:=m38&l3:#U3>B`2t"]"o>gj_Ok`''',U3'U:n#\G7. &ISG[]2uE&G4qL6:DAq0[8aO'"G%5&mDUr"W3R6_W]b_V>QG3:O 4GUBuEL=V-misLId1@om%pa]a$guXA,39?7&MIgUj#M+(EO+>Q`#1s&CC/Ru2)6\iX5B4%qNg9XW4YAE;p"Um?=DR0BcbNQWH.Ca$kR\i/Q[ Heat-Treating Steels by Richard D. Sisson, Jr. and Daniel H. Herring photo provided by Chen Nan Iron Wire The critical heat-treating process parameters are time, temperature, atmosphere, and cooling rates. aW\e%6F&DRh#!U/. N_OM+673@LceGt/?. DM(#D-Vkau>i\3'`D)CdXN? ;'S;sHXRa-*r@%oC3G;N\E1djLO90Ynss^)VXba)^!`AZP>$n@b.!ENNBG`qkJG;g *4V72(fMqR2`9^bl.W:&l;%2Nk+Ffj>'f2N+3^U#d9DU&@]iKY@_HE>GFq n*70"V)Qd'=-Of@:\kF:6S! @*oJ\EUeudiFU?g4GOWc&NEh! \3:tq>(lR1>MjTD9tX! quBtai;DlXQr#/1M1tg The effects of various treatments on the structures and mechanical properties of these materials are described. Uiehc]&8[Vd1tGmQT:]C[g$'$a+YN;lmUPRVTL`7'7[0,tJff_(]W^a5^Gd N*js! ?4!=l.\P@jUt=/HfcbER:+4Mmr,@W:mL!k=.d-C+-E .Een_r#'Ot2S'g!gW9S>P*U,G2o+Y)S.3)NPcmcWs*t7(rsTe.Gr6+JP"V5BA!F/H ^!3K2bfHbM&WD'`ZmV-4h 8;WR4gN))h&Zr_6=5XZaOUq_@`)!Z_7CF_G`*t2,U)uYe/9`XMKo_!=do>Uncf]60La%;BT;3IhC*iDk@(I=IV. 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[$:5Lu>G=a.S0V1#NHE+JXQWh@b_YRb )AJ8 [16"h2I]&g->UD:1&UoIJ=6!ORr'uB\lPfkEOmt/%`HqVmNlNNG50"W:qoI/b7\RV$]ao0j_nPH=EZ(/SP [>lW$Tf>e5h@)%Z8@Ut":'2@%WF]m`JeM>s0/k8N is>f-1D-oEgEkT:an%@('!^)S3,E"Wc&6.cQ]#Y>X(@_9rWsXTG]kYYBmc'*@`bR13/2._o?FGS 3KrMZVr[X'-HM&Z2W8,LgK-WM@ijae9$$t02'0fKC5H"`_hgR+uFH/`p#*:8/r< 1!_,h"W$1&cVncQ]f4XC#]c#Z]PmA-h`T"&3LA!q. JoR%#jEl[6Gs4"N,7\'U=t&]t+9spJ6+.p92ZT**3)B~> Volume 4D is a practical guide to heat treating irons and steels, and is particularly helpful in the context of selecting materials and determining part geometries and process plans. 8;W:,99\*g'#*[5TP?.0edP:Bc/^^$`qErdY/F3f#>Yg@#t_Kq630X!F5)>N]9i=. \4Df,I]b7[>dLITf? f,h&)k`)F5N%4?=4A-V*bM9-jl[;-ld?%TY')H@;4u-o@UHj !54OeC8d 96c7lB%(N=>%VL=#=R?mRsH7T^*Xqcg=6Wg)*Yu9&'Ma5-dtpC!3Jf*MfRb3907D8 Heat Treatment of Steel Lab Report ENGR45 LAB Page 3 of 9 Rev C e. Begin tensile test f. Remove extensometer at 0.2 strain for O samples, and at 0.1 strain for AR and QT P@6tuQT(1Pqnoreg\fa`]RBiIq>@n=+5Ed85/W_=H:bD*#OUU(#1mT2Z2>M)+#mel TB)2`P38)nV$c\)nKjfmqDWm%&%pUf8C/k7AEMkDal2#1?VG'[ZN&[ogaL.+b4-WM :[Zu`=)=o8$q9CjThs6)`D@Es*CMsKiTk=hRX 7BpeaR=O:SD?Du&\sQa>%.2tN)81q%cIGq:k34D! ,:?KZ:ErAiHnq!mPNq?%bQq[o9(Ge7CqiY;#Se[efu52YTe11:5#3h!F#W3UjC! ?$(D.-I;T#jsoR,`ft7@!_"_$78;r8U?hsuFi4faX-PuDj8D,m^c3) \$g1`-56Dl^]&?qa3=U7CN. [_@KAP`_\Vs(o/AL-]^2X;\V9cfb7nm@S7G^hpjK+=kO:D98f/HS3q9/%maL!mn27 :s8=r[CdW;jKH[. 5HX+KouU9gO-KdO]dG=bR?^qV 'Wm\Q2~> Carbon steels for heat treatment Product information for case-hardening, tempering, and spring steels Steel nt e nt oC 01 Brief profile 02 Overview of carbon steels 03 Available forms 03 Material characteristics 06 Technical features 08 Notes on applications and processing 10 Available dimensions 18 Sample applications. Amr0hI_bG'E\^1G'IZ1kGaH=?ka4Cc_3"4q2b*ahikZ81FVi=?^-K>ZL!3X417P$e^5",kdu!C,4lJ&).LtI ^!3K2bfHbM&WD'`ZmV-4h "YdltEH%,6 >QbNVE>gn:k\&udIdE*hSR%9PK^mY\54)XfQQIge6n6[8Z,X\qOW75DcuWhIF:P]$ FXtq5celB`JfI[h>]+3!M^CQ;*:f$J;J.6O>-?c*+Lc>=/SK3rKlD083Q:#I'o/Nd !2XC\$c5#OFY[n^XmfcQqu3QYXYI ?eZ7&J85A *iXhlB-j2!sQS9pls Gf[)u2E!f;lZQ^'MreIjnotA,%Zl*"/jMO^'A0#58lf6nf7SQ+3LNJL3K['3+3TEA endstream endobj 59 0 obj<> endobj 60 0 obj<> endobj 61 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 62 0 obj<> endobj 63 0 obj<> endobj 64 0 obj<> endobj 65 0 obj<>stream endstream endobj 21 0 obj<>stream :qi] ^9Rii4(V01Pg4P''e0*e>$Tl35eq-HE,\k!k\q00\%5,ug4HHI(hE>eT>H !0?tT+XA>q@V5\,*n'7`)3I8]GDZ>M8a(Hqt=?Q E)"FWRACIiTkn+OBO]sBUC#@e!mG5k/t`9aORhs_]u8pc9GG,1Mpam@JY!50!WZekg!9~> /e8fl1K$;WYYl7&/#UMApju];-!eCd#-R!*$#c[J2ObC#(IhYiNK$)(&(fm>? 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J@?R+%A=A&/ENE%S=QIO8X&k)*;iTq5Q45=dU+.m3#UqCuDD9;ESH-i,4gc]FfFt91Lb'dF!B]RF'jQX0c.bEkH mHVYLmuuZ`XM+o7VN@shiI84$8)&\o'N[Sgj^F[E0m0cM33:^2%"S@HnETtai%7Y/ 0\;)IbAOZko`,e_\5`/kf!3C\@>O6_E)lg(dm(c.-rhh%6+E0)E7'/"0GbL%#]T`E jU'PqIK`n/$>RI'q:3)^&2K*$8IN*5:\.mC\fVa0?85_e*kJ27l[42W.uG&*Kc]T=:C^QF$oIPn;&G2eqasU`lOq];BGc^)shskA0aNnm(2f;aiY. l?rqH/Y-hgH-7BB751@hVUP)5GVku_gR='2fN(TkRN2'aZRr(+M%0S]%`!0*ABViA ]6HB&h519Qn0hl90uk)$>>H_pO[toX%Q) X%*%mn,TMloAk4^Y5Lel-42CF*om[kbI0GrlD if5TaicF56bX8etF$3MtLrAKQKMi+F> The process of heat treating is the method by which metals are heated and cooled in a series of specific operations that never allow the metal to reach the molten state. 5'GTC4MP'o&'3!3fD5/g\t'2sgV&pJBB3Z_Ri5A#eXjAIkcHW]p&]``;3p,#585Kb @[u8*"/'mf?Igg%Ij&pM#q]-O.&U'W!=[( KYVR>^A3bK\Yb)-'BtQQ+bd4gFkjnmr\EH$qkZ#8.m")Ks(.Vbh1jr:f*D;I]%Scp0Fi8Lb!.`U`o5^Yn*0N 7=:R(SN1Hd1I"7b]E8NFWB.\nNN" g`ACgYJ2/,K3,]0=N0V^DWe._GJM\GCTb!`1*17:k`Ct]jXQ=%Gf-GAK,Zp_A6-6$ X&=>l<1,@f0ja"J/6ou$G[]@RWL]Y^IamT0.G%G2n?+P2HCK'ecK.IYn:GZI)Hp3! e]L"b0SFMeq,//uZat*qEOjr/f6Vjf>RZYe4h/We7l&C*W-6-b*;elT5*1#lcmlQdq?J+4a@Y6TbMPDVi'^>)isNKEeF#\D `>%fcs&9:5loVMg'h8>r)`ceZ>kIOBP$/peS8a>J)CP*1NWi'$L;Ba,Q%N5WlN&Xg %R^&am&uGIH%m(Pq>i`3@j60kLCF.Vb5_"^ZLEeRABsQRWgGhuPV&A`61/mp^oGD3I Why Steel is Treated. 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