Page 30 - Steel Tech India eMagazine Volume October 2023

92/ Ć ,668( Ć 2FWREHU

‡ $OOR\LQJ HOHPHQWV JUDLQ VWUXFWXUH RI WKH VWHHO $ ¿QH JUDLQHG
7KH SUHVHQFH RI DOOR\LQJ HOHPHQWV VXFK DV PLFURVWUXFWXUH FRQWULEXWHV WR LPSURYHG WRXJKQHVV
PDQJDQHVH FKURPLXP DQG QLFNHO FDQ HQKDQFH DQG UHVLVWDQFH WR FUDFNLQJ (5: WXEHV XVHG
WKH WRXJKQHVV RI VWHHO 7KHVH HOHPHQWV PRGLI\ WKH LQ KLJK VWUHVV DSSOLFDWLRQV VXFK DV SLSHOLQHV
VWHHO¶V PLFURVWUXFWXUH DQG FDQ LPSURYH LWV UHVLVWDQFH DQG DHURVSDFH PD\ LQFRUSRUDWH YDQDGLXP WR
WR IUDFWXUH DQG FUDFNLQJ GXULQJ ZHOGLQJ enhance their toughness.
D 0DQJDQHVH KHOSV LQ WKH IRUPDWLRQ RI ¿QH I &RSSHU DQG 1LFNHO FRSSHU DOOR\V &RSSHU DQG
JUDLQHG VWUXFWXUH DQG KHQFH LW UHGXFHV WKH ULVN RI FHUWDLQ QLFNHO FRSSHU DOOR\V FDQ HQKDQFH WKH
FUDFN LQLWLDWLRQ DQG SURSDJDWLRQ 7KLV HOHPHQW LV FRUURVLRQ UHVLVWDQFH DQG WRXJKQHVV RI VWHHO
SDUWLFXODUO\ HႇHFWLYH LQ ORZ FDUERQ VWHHOV DQG FDQ 7KHVH DOOR\V DUH RIWHQ XVHG LQ (5: WXEHV IRU
KHOS LPSURYH WKH GXFWLOLW\ DQG LPSDFW UHVLVWDQFH applications where both corrosion resistance
RI (5: WXEHV )XUWKHUPRUH 0Q 6L UDWLR SOD\V D DQG WRXJKQHVV DUH FULWLFDO VXFK DV PDULQH DQG
FULWLFDO LPSDFW LQ WKH IRUPDWLRQ RI ZHOG R[LGH RႇVKRUH DSSOLFDWLRQV
J $OXPLQLXP DQG 7LWDQLXP DUH DGGHG WR VWHHO IRU
E &KURPLXP LV NQRZQ IRU HQKDQFLQJ WKH FRUURVLRQ
UHVLVWDQFH RI VWHHO EXW LW DOVR FRQWULEXWHV WR WKHLU GHR[LGL]LQJ SURSHUWLHV DQG WKHLU UROH LQ
WRXJKQHVV ,Q KLJKHU FRQFHQWUDWLRQV FKURPLXP JUDLQ UH¿QHPHQW 7KHVH HOHPHQWV KHOS SUHYHQW
FDQ LPSURYH WKH UHVLVWDQFH RI WKH VWHHO WR VWUHVV WKH IRUPDWLRQ RI KDUPIXO QRQ PHWDOOLF LQFOXVLRQV
FRUURVLRQ FUDFNLQJ PDNLQJ LW PRUH VXLWDEOH IRU which can reduce toughness and weldability.
DSSOLFDWLRQV ZKHUH (5: WXEHV PD\ HQFRXQWHU (5: WXEHV SURGXFHG ZLWK DOXPLQLXP DQG WLWDQLXP
FRUURVLYH HQYLURQPHQWV additions tend to have a better toughness and
FOHDQHU PLFURVWUXFWXUH
F 1LFNHO LV RIWHQ XVHG DQ DOOR\LQJ HOHPHQW WR
LQFUHDVH WKH WRXJKQHVV RI WKH VWHHO ,W KHOSV LQ • +HDW WUHDWPHQW 7KH KHDW WUHDWPHQW SURFHVV
LPSURYLQJ WKH GXFWLOLW\ DQG LPSDFW UHVLVWDQFH RI LQFOXGLQJ TXHQFKLQJ DQG WHPSHULQJ FDQ EH XVHG
WKH VWHHO UHGXFLQJ WKH ULVN RI EULWWOH IUDFWXUHV WR LPSURYH WKH WRXJKQHVV RI VWHHO 3URSHU KHDW
In certain application, where ERW tubes are WUHDWPHQW FDQ RSWLPL]H WKH VWHHO¶V PLFURVWUXFWXUH
H[SRVHG WR ORZ WHPSHUDWXUHV QLFNHO FDQ EH PDNLQJ LW PRUH VXLWDEOH IRU ZHOGLQJ DQG UHGXFLQJ WKH
SDUWLFXODUO\ EHQH¿FLDO LQ PDLQWDLQ WRXJKQHVV LQ ULVN RI ZHOG GHIHFWV
VXE ]HUR FRQGLWLRQV • ,QFOXVLRQV DQG ,PSXULWLHV 7KH SUHVHQFH RI
G 0RO\EGHQXP LV DQ DOOR\LQJ HOHPHQW WKDW FDQ QRQ PHWDOOLF LQFOXVLRQV DQG LPSXULWLHV LQ VWHHO FDQ
HQKDQFH WKH WRXJKQHVV RI VWHHO HVSHFLDOO\ QHJDWLYHO\ LPSDFW WRXJKQHVV 7KHVH LPSXULWLHV
in high stress applications. It increases the FDQ DFW DV VWUHVV FRQFHQWUDWLRQ SRLQWV PDNLQJ WKH
KDUGHQDELOLW\ RI WKH VWHHO DOORZLQJ LW WR IRUP D PDWHULDO PRUH VXVFHSWLEOH WR IUDFWXUH GXULQJ ZHOGLQJ
GHVLUDEOH PLFURVWUXFWXUH WKDW LV PRUH UHVLVWDQW WR &DUHIXO TXDOLW\ FRQWURO DQG SXUL¿FDWLRQ SURFHVVHV
FUDFNLQJ (5: WXEHV LQ VWUXFWXUDO DQG SUHVVXUH DUH HVVHQWLDO WR PLQLPL]H WKHVH LVVXHV
DSSOLFDWLRQV RIWHQ EHQH¿W IURP WKH DGGLWLRQ RI • *UDLQ VL]H 7KH JUDLQ VL]H RI WKH VWHHO¶V PLFURVWUXFWXUH
PRO\EGHQXP FDQ DOVR SOD\ D UROH LQ LW¶V WRXJKQHVV )LQHU JUDLQV
H 9DQDGLXP LV NQRZQ IRU LWV DELOLW\ WR UH¿QH WKH are generally associated with better toughness and
LPSURYHG ZHOGDELOLW\

)LJ D &RXUVH JUDLQ PLFURVWUXFWXUH ZLWK ORZHU WRXJKQHVV E )LQH JUDLQ VWUXFWXUH ZLWK KLJKHU WRXJKQHVV

STEEL TECH