Page 21 - Steel Tech India eMagazine Volume April 2020
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HWGNNGF D[ KPFWUVTKCN PGGFU JCU DGGP RGTUKUVGPV CPF (NCV RTQFWEVU Long
EGTVCKP VGEJPKECN KPPQXCVKQPU CTQWPF FKIKVCN KPFWUVTKCN RToFWEVU
VTCPUHQTOCVKQP JQNF UVTQPI RTQOKUGU CTQWPF RTQFWEVKXKV[ PToFWEV $iNNGV HoV SVTiR CoNF SVTiR SVCinNGUU RoF $CT
KORTQXGOGPV CPF OQFGTPK\CVKQP V[RG SVGGN RCiN
NCVWTG %TCEMU %TCEMU $TWKUGU 5NCI %TCEMU CPF
6JG GZRNQUKQP QH FCVC CTQWPF GXGT[ KPFWUVTKCN RTGOKUG
GSWKROGPV RNCPV QT HCEVQT[ KU KOOGPUG #XCKNCDKNKV[ of and NQPIKVWFKPCN UNCIU KPENWUKQPU scratches
KPENWUKQPU scratches
RToDNGO scratches UETCVEJGU
QH FCVC QT VGEJPQNQI[ JCU PGXGT DGGP VJG RTQDNGO Ō transverse UGCOU KP RKEMNKPI
YJCV VQ FQ YKVJ KV JCU DGGP VJG FTKXKPI RTKPEKRNG DGJKPF UETCVEJGU oxide
GXGT[ FCVC UEKGPVKUVŏU VJQWIJVU KP VJG NCUV FGECFG 9KVJ UECNGU UECNGU
VJG CXCKNCDKNKV[ QH ) CFXCPEGF CPCN[VKEU ENQWF CPF FGNCOKPCVKQP ETCEMU
GFIG EQORWVKPI QTICPK\CVKQPU CTG PQY OQTG GSWKRRGF TQNN OCTMU JQNGU
VQ VCMG KPHQTOGF FGEKUKQPU CTQWPF GSWKROGPV HCKNWTG RKV FGHGEVU HGCVJGT TQNN
GSWKROGPV OCKPVGPCPEG CPF KPXGPVQT[ QRVKOK\CVKQP UGCOU OCTMU
&CVC FTKXGP 1'' 1XGTCNN 'SWKROGPV 'HHGEVKXGPGUU inclusions
QRVKOK\CVKQP CKOU VQ WUG CFXCPEGF CPCN[VKEU VQ KFGPVKH[ 9JKNG KP OQUV ECUGU FGHGEVU ECP GCUKN[ DG FGVGEVGF
VJG TQQV ECWUGU QH 1'' NQUU D[ UVCPFCTF KOCIKPI VQQNU NKMG KPFWUVTKCN ECOGTCU
YKVJ HTCOG TCVG QH ` HRU CPF JCU DGGP KP WUG HQT
6JG GNGOGPVU VJCV HQTO VJG DWKNFKPI DNQEMU QH +PFWUVT[ UGXGTCN [GCTU #U CP GZCORNG EGTVCKP KORWTKVKGU CTG
CTG JQYGXGT XCTKGF .GV WU VT[ VQ WPFGTUVCPF VJG WUWCNN[ TQWPF CPF JGPEG RKZGNU VJCV CRRGCT DTKIJV
DTGCFVJ QH DGPGſVU VJCV ECP DG FGTKXGF VJTQWIJ +PFWUVT[ QP CP KOCIG YKVJ C FCTM DCEMITQWPF CTG GCUKN[
VJTQWIJ VJG CRRNKECVKQP QH VJG HQNNQYKPI UKZ FKIKVCN KFGPVKſCDNG *QYGXGT EQORNGZ FGHGEVU YJGTG VJG
KPFWUVTKCN VGEJPQNQIKGU
UJCRG CPF UK\G QH KORWTKVKGU CTG PQV ENGCT QT YGCT QT
ATViſEiCN InVGNNiIGnEG NQY EQPVTCUV NKPGCT FGHGEVU TGSWKTG CFXCPEGF FGVGEVKQP
# OCLQT GZRGPUG CTGC VJCV EQPEGTPU CP[ OCPWHCEVWTKPI OGVJQFU (CEVQTKGU CFQRVKPI VJG +PFWUVT[ CTG IQKPI
QTICPK\CVKQP KU VJG QPIQKPI OCKPVGPCPEG QH RTQFWEVKQP HQT CFXCPEGF ECOGTCU YKVJ CWVQOCVKQP CPF DWKNV KP
NKPG OCEJKPGT[ CPF GSWKROGPV 9JKNG GPGTI[ EQPVTKDWVGU KPVGNNKIGPEG YJGTG UOCTV UGPUQTU RNC[ C XKVCN TQNG
VQ CTQWPF RGTEGPV QH CNN QRGTCVKQPCN EQUVU CU OWEJ 7UKPI C EQODKPCVKQP QH UVCVKUVKECN OGVJQFU GI (QWTKGT
CU RGTEGPV QH GPGTI[ DTQWIJV KPVQ KPFWUVTKCN RNCPVU VTCPUHQTO )CDQT VTCPUHQTO YCXGNGV VTCPUHQTO CPF
KU YCUVGF CPPWCNN[ )CTVPGT GUVKOCVGU VJCV INQDCNN[ #TVKſEKCN 0GWTCN 0GVYQTMU #00 YG ECP JCXG UYKHVGT
CRRTQZ DKNNKQP KU NQUV CPPWCNN[ FWG VQ WPRNCPPGF TGCN VKOG FGVGEVKQP QH UWTHCEG SWCNKV[ KPURGEVKQP QH EQNF
FQYPVKOG Ō CPF GSWKROGPV HCKNWTG CNQPG EQPVTKDWVGU VQ TQNNGF UVTKRU CU CP GZCORNG
CTQWPF RGTEGPV QH VJKU ſIWTG 7PRNCPPGF FQYPVKOG 9KVJ VJG XCUV CXCKNCDKNKV[ QH KPVGNNKIGPV FCVC #+
NGCFU VQ GZEGUUKXG OCKPVGPCPEG TGRCKT CPF RCTVU CNIQTKVJOU CTG CNUQ HQTOWNCVKPI OCTMGV FGOCPFUCPF
TGRNCEGOGPV CTG UWIIGUVKPI RCVVGTPU CUUQEKCVKPI NQECVKQPU UQEKQ
'SWKROGPV HCKNWTG RTGFKEVKQP JCU DGEQOG C OWUV JCXG GEQPQOKE CPF OCETQ GEQPQOKE HCEVQTU YGCVJGT FCVC
UQNWVKQP HQT OCPWHCEVWTGTU CKOKPI HQT TGFWEKPI 12': RQNKVKECN UVCVWU CPF EJCPIKPI EQPUWOGT DGJCXKQWT FCVC
TGFWEVKQP #+ CNIQTKVJOU UWRRQTVGF D[ OCEJKPG NGCTPKPI +PVGNNKIGPV YQTMƀQYU UWIIGUVKPI VKOGN[ KPVGTXGPVKQP CPF
CPF CTVKſEKCN PGWTCN PGVYQTMU JGNR HQTOWNCVG RTGFKEVKQPU FCVC HGGFU CTG RTQXKPI VQ DG KPXCNWCDNG KP QRVKOK\KPI
TGNCVGF VQ CUUGV HCKNWTG %CUG UVWF[ -QPG GNGXCVQTU RTQFWEVKQP EQPVTQN KPXGPVQT[ NGXGNU CPF VJG FGOCPF
KU WUKPI #TVKſEKCN +PVGNNKIGPEG VJTQWIJ C EQPPGEVGF UWRRN[ DCNCPEG QH TCY OCVGTKCN
FGXKEGU RNCVHQTO VJCV YQTMU Z VQ EQPPGEV EQNNGEV &GRGPFKPI QP VJG XCT[KPI FGITGG QH CRRNKECVKQP QH #+
CPF CPCN[UG FCVC HTQO OCEJKPGU VQ RTGFKEV GSWKROGPV VJG HWVWTG QH +PFWUVTKCN #WVQOCVKQP ECP DG XKGYGF KP VJG
HCKNWTG HQNNQYKPI HQWT UVCIGU CEEQTFKPI VQ (TQUV 5WNNKXCP
#RCTV HTQO GSWKROGPV HCKNWTG FGHGEV FGVGEVKQP KP 9KVJ VJG KPVTQFWEVKQP QH #+ ENGCTN[ VJG RCVJ VQ VJG
RTQFWEV EQPſIWTCVKQP KU CNUQ C MG[ CTGC YJGTG VJG NCVGUV +PFWUVTKCN #WVQOCVKQP YQWNF DG HWNN[ CWVQPQOQWU # PGY
VGEJPQNQIKGU CTG JGNRKPI TGUQNXG 6JKU KU RTKOCTKN[ YKVJ YCXG QH FKIKVK\CVKQP KU UJCRKPI VJG HWVWTG QH KPFWUVTKCN
VJG JGNR QH VGEJPQNQIKGU TGNCVGF VQ 8KUWCN +PURGEVKQP CWVQOCVKQP YKVJ EQPXGPVKQPCN CWVQOCVKQP U[UVGOU XK\
CPF #EQWUVKE #PCN[UKU .GV WU VT[ VQ NQQM KPVQ VJG PCVWTG 5%#&# 2.% CPF &%5 CTG IGVVKPI GODGFFGF YKVJ #+
QH FGHGEVU KP ſPKUJGF RTQFWEVU KP VJG 5VGGN KPFWUVT[
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