Karfe mai duplex bakin karfe yana da tsarin matakai biyu wanda girman ferrite da austenite ya kai kusan kashi 50%. Saboda tsarin matakai biyu, waɗannan ƙarfen sun haɗa mafi kyawun halaye na ƙarfe mai ferritic da austenitic bakin karfe. Gabaɗaya, tsarin ferrite (tsarin cubic mai tsakiya na jiki) yana ba da ƙarfi mai ƙarfi na injiniya, ƙarfi mai kyau da juriya mai kyau na tsatsa, yayin da tsarin austenite (tsarin cubic mai tsakiya na fuska) yana ba da kyakkyawan tsari.
Haɗakar waɗannan kaddarorin shine dalilin da ya sa ake amfani da ƙarfe mai kauri duplex a masana'antar mai, ɓangaren litattafan almara da takarda, masana'antar samar da wutar lantarki ta ruwa da wutar lantarki. Suna iya jure wa lalata kayan aiki, tsawaita lokacin aiki, da kuma aiki a cikin yanayi mafi tsauri na muhalli.
Kayan aiki masu ƙarfi suna ba ku damar rage kauri da nauyi na sassa. Misali, ƙarfe mai ƙarfi duplex na iya samar da ƙarfin amfani sau uku zuwa huɗu da juriya ga tsatsa fiye da ƙarfe 316 na bakin ƙarfe.
An rarraba ƙarfe masu duplex zuwa matakai uku dangane da abun ciki na gravimetric chromium (Cr) da lambar daidai da juriyar pitting (PREN):
Ɗaya daga cikin muhimman abubuwan da ke tattare da walda DSS, SDSS, HDSS da ƙarfe na musamman na ƙarfe mai ƙarfe shine kula da sigogin walda.
Bukatun aikin walda na masana'antar mai suna petrochemical suna ƙayyade mafi ƙarancin ƙimar PREN da ake buƙata don ƙarfe mai cikawa. Misali, DSS yana buƙatar PREN na 35 kuma SDSS yana buƙatar PREN na 40. Hoto na 1 yana nuna DSS da ƙarfe mai cikawa mai dacewa don GMAW da GTAW. Yawanci, abun ciki na Cr na ƙarfe mai cikawa zai yi daidai da na ƙarfen tushe. Ɗaya daga cikin ayyukan da za a yi la'akari da su lokacin amfani da GTAW don tushen da tashoshin zafi shine amfani da ƙarfe mai cikawa mai yawa. Idan ƙarfe mai cikewa bai yi daidai ba saboda rashin kyawun dabara, ƙarfe mai cikewa mai yawa zai iya samar da PREN da ake so da sauran ƙimomin samfurin da aka haɗa.
A matsayin misali don nuna wannan, wasu masana'antun suna ba da shawarar amfani da wayar cika SDSS (25% Cr) don ƙarfe mai tushen DSS (22% Cr), da kuma wayar cika HDSS (27% Cr) a cikin ƙarfe mai tushen SDSS (25% Cr). Don ƙarfe mai tushen HDSS, zaku iya amfani da wayar cika HDSS. Wannan ƙarfe mai bakin ƙarfe mai siffar austenitic-ferritic duplex yana da kusan ferrite 65%, 27% chromium, 6.5% nickel, 5% molybdenum kuma ana ɗaukarsa ƙasa da 0.015% ƙarancin carbon.
Idan aka kwatanta da SDSS, shirya HDSS yana da ƙarfin yawan amfanin ƙasa mafi girma da kuma juriya ga tsatsa da tsatsa da ke tsakanin ramuka. Hakanan yana da juriya mafi girma ga tsatsa da hydrogen ke haifarwa da kuma juriya mafi girma ga muhallin acidic mai ƙarfi fiye da SDSS. Babban ƙarfinsa yana nufin ƙarancin ƙimar kulawa yayin samar da bututu, tunda ba a buƙatar nazarin abubuwa masu iyaka don ƙarfe mai ƙarfi iri ɗaya, kuma ƙa'idodin karɓuwa na iya zama ƙasa da na al'ada.
Ganin yawan kayan aiki na asali, buƙatun injina da yanayin sabis, da fatan za a yi la'akari da tuntuɓar ƙwararren masani kan aikace-aikacen DSS da ƙarfe kafin fara aikinku na gaba.
WELDER, wacce a da ake kira Practical Welding Today, tana nuna ainihin mutanen da ke yin kayayyakin da muke amfani da su da kuma waɗanda muke aiki da su kowace rana. Wannan mujallar ta yi wa al'ummar walda hidima a Arewacin Amurka tsawon sama da shekaru 20.
Yanzu da cikakken damar shiga bugu na dijital na The FABRICATOR, samun damar samun albarkatun masana'antu masu mahimmanci cikin sauƙi.
Bugun dijital na Jaridar The Tube & Pipe yanzu ya zama cikakke, wanda ke ba da damar samun albarkatu masu mahimmanci a masana'antu cikin sauƙi.
Ji daɗin cikakken damar shiga bugu na dijital na STAMPING Journal, wanda ke ba da sabbin ci gaban fasaha, mafi kyawun ayyuka da labaran masana'antu don kasuwar tambarin ƙarfe.
Yanzu da cikakken damar shiga bugu na dijital na The Fabricator en Spanish, samun damar samun albarkatun masana'antu masu mahimmanci cikin sauƙi.