1. Isizukulwana sesibini se-duplex steel stainless steel pipe sineempawu ze-ultra-low carbon, i-nitrogen ephantsi, ukubunjwa okuqhelekileyo kwe-Cr5% Ni0.17% n kunye ne-2205 ephezulu ye-nitrogen yomxholo kunesizukulwana sokuqala se-duplex steel stainless steel pipe, ephucula. Ukumelana noxinzelelo lwe-corrosion kunye nokuchasana kwe-pitting media acidic kunye noxinzelelo lwe-ion ye-chloride ephezulu.I-nitrogen yinto eyomeleleyo yokwenza i-austenite.Ukongezwa kwe-nitrogen kwi-duplex yensimbi engenasici akugcini nje ukuphucula iplastiki kunye nokuqina kwentsimbi ngaphandle komonakalo ocacileyo, kodwa kuphucula amandla entsimbi, kwaye inqanda imvula kunye nokulibaziseka kwe-carbides.
2. Umsebenzi wombutho: Kwi-greenhouse, i-austenite kunye ne-ferrite i-akhawunti malunga nesiqingatha sesisombululo esiqinileyo, esineempawu zesakhiwo se-biphase.Igcina iimpawu zenani elincinci labaqhubi bentsimbi ye-ferritic, ukuchasana nokugoba, ukuqhekeka kunye ne-chloride yoxinzelelo lwe-corrosion, kunye nokuqina okulungileyo, ukushisa okuphantsi kwe-embrittlement, ukuchasana ne-intergranular corrosion kunye ne-mechanical properties kunye ne-weldability efanelekileyo.
3. Ngaphantsi kweemeko zoxinzelelo ezifanayo zingagcina izinto eziphathekayo, amandla emveliso kunye noxinzelelo lwe-corrosion resistance ye-duplex steel stainless steel pipe iphantse ibe ngamaxesha angama-1 e-austenitic stainless steel, i-coefficient yokwandisa i-linear ingaphantsi kwe-austenitic stainless steel stainless austenitic. inkqubo yensimbi, kunye nentsimbi ephantsi yekhabhoni isondele kuyo.Ukubumba okubandayo akulunganga njengentsimbi ye-austenitic engatyiwayo.
4. I-Weldability: i-duplex steel stainless steel pipe 2205 ine-weldability efanelekileyo, i-welding ebandayo, i-sensitive eshushu ye-crack incinci, ngokuqhelekileyo akukho ukushisa kwangaphambili ngaphambi kwe-welding, akukho unyango olushushu emva kwe-welding.Ngenxa yokutyekela encinci ye-ferrite yesigaba esisodwa kunye nomxholo ophezulu we-nitrogen kwindawo echaphazelekayo yokushisa, amandla ocingo lwe-welding anokulawulwa ngeli xesha xa izinto ze-welding zikhethwa ngokufanelekileyo, kunye nokusebenza okubanzi kulungile.
5. I-Hot crack: Uvakalelo lwe-crack eshushu lungaphantsi kakhulu kune-austenitic stainless steel.Oku kungenxa yokuba umxholo we-nickel awuphezulu, ukungcola okulula ukwenza i-eutectic ephantsi-enyibilikayo iphantsi, ifilimu yolwelo enendawo ephantsi yokunyibilika ayilula ukuyivelisa, kwaye ukukhula ngokukhawuleza kwengozi yenkozo akukho phezulu. amaqondo obushushu.
6. Ubunzima bommandla ochaphazelekayo wokushisa: Ingxaki enkulu ye-welding ye-duplex steel stainless steel pipe yindawo echaphazelekayo yokushisa.Ngenxa yesiphumo sokupholisa ngokukhawuleza kwendawo echaphazelekayo yobushushu kwimo engalinganiyo yomjikelezo wobushushu be-welding, i-ferrite epholileyo isoloko igcinwa, nto leyo idla ukwandisa uvakalelo lokutya kunye nokuqhekeka okubangelwa yi-hydrogen.
7. I-Metallurgy ye-Welding: Ngexesha lenkqubo ye-welding ye-duplex stainless steel, phantsi kwesenzo sokuhamba ngebhayisikili ye-thermal, i-microstructure kunye ne-heat-affected zone of the weld metal ziye zatshintsha utshintsho.Kwiqondo lokushisa eliphezulu, i-microstructure ye-duplex yensimbi engenasici ihlanjululwa yi-ferrite kunye ne-austenite ngexesha lokupholisa.Ubungakanani bemvula ye-austenite ichaphazeleka ngezinto ezininzi.
Ixesha lokuposa: Jun-26-2023