1. Isizukulwana sesibini sombhobho wentsimbi engagqwali ye-duplex sineempawu zekhabhoni ephantsi kakhulu, i-nitrogen ephantsi, ukwakheka okuqhelekileyo yi-Cr5% Ni0.17%n kunye nomxholo we-nitrogen ophezulu we-2205 kunesizukulwana sokuqala sombhobho wentsimbi engagqwali ye-duplex, ophucula ukumelana nokugqwala koxinzelelo kunye nokumelana nemingxuma ye-acidic media ene-chloride ion concentration ephezulu. I-nitrogen yinto enamandla yokwenza i-austenite. Ukongezwa kwe-nitrogen kwintsimbi engagqwali ye-duplex akuphuculi kuphela ukuqina kwentsimbi ngaphandle komonakalo obonakalayo, kodwa kuphucula namandla entsimbi, kwaye kuthintele ukuna kunye nokulibaziseka kwe-carbides.
2. Umsebenzi wolungiselelo: Kwigreenhouse, i-austenite kunye ne-ferrite zenza malunga nesiqingatha sesisombululo esiqinileyo, esineempawu zesakhiwo se-biphase. Igcina iimpawu zenani elincinci lee-ferritic stainless steel conductors, ukumelana nokuqhekeka, ukuqhekeka kunye nokugqwala koxinzelelo lwe-chloride, kunye nokuqina okuhle, ubushushu obuphantsi bokubhitya, ukumelana nokugqwala phakathi kwegranular kunye neempawu zoomatshini kunye nokudityaniswa okuhle.
3. Phantsi kweemeko ezifanayo zoxinzelelo zinokonga izixhobo, amandla okuvelisa kunye nokumelana nokugqwala koxinzelelo lwepayipi yentsimbi engagqwali ye-duplex steel phantse ngokuphindwe ka-1 kunentsimbi engagqwali ye-austenitic, i-linear expansion coefficient ingaphantsi kwentsimbi engagqwali ye-austenitic yenkqubo yentsimbi engagqwali ye-austenitic, kwaye intsimbi enekhabhoni ephantsi ikufutshane nayo. I-cold forging ayilunganga njengentsimbi engagqwali ye-austenitic.
4. Ukuwelda: ipayipi yentsimbi engenasici ye-2205 yentsimbi ephindwe kabini inokwelda kakuhle, ukuwelda kubanda, uvakalelo lokuqhekeka okushushu luncinci, ngesiqhelo akukho kufudumeza ngaphambi kokuwelda, akukho kunyangwa kobushushu emva kokuwelda. Ngenxa yokuthambekela okuncinci kwe-ferrite yesigaba esinye kunye nomxholo ophezulu we-nitrogen kwindawo echaphazelekileyo bubushushu, amandla entambo yokuwelda anokulawulwa ngeli xesha xa izinto zokuwelda zikhethwe ngokufanelekileyo, kwaye ukusebenza okupheleleyo kulungile.
5. I-Hot crack: Uvakalelo lwe-hot crack luphantsi kakhulu kunolwe-austenitic stainless steel. Oku kungenxa yokuba umxholo we-nickel awuphezulu, ukungcola okulula ukukwenza i-eutectic enyibilikayo kancinci kuphantsi, ifilimu yolwelo ene-melting point ephantsi ayilula ukuyenza, kwaye ukukhula ngokukhawuleza kwengozi yeenkozo akukho xa kushushu kakhulu.
6. Ubuqhophololo bendawo echaphazelekileyo bubushushu: Eyona ngxaki iphambili yokuwelda umbhobho wentsimbi engagqwaliyo yentsimbi ezimbini yindawo echaphazelekileyo bubushushu. Ngenxa yesiphumo sokupholisa ngokukhawuleza kwendawo echaphazelekileyo bubushushu kwimeko engalinganiyo yomjikelo wobushushu bowelda, i-ferrite epholileyo ngakumbi ihlala igcinwa, nto leyo edla ngokunyusa ubukhali bokugqwala kunye nokuqhekeka okubangelwa yi-hydrogen.
7. I-Welding metallurgy: Ngexesha lenkqubo yokudibanisa intsimbi engagqwaliyo ye-duplex, phantsi kwesenzo sokujikeleza kobushushu, isakhiwo se-microstructure kunye nendawo echaphazeleka bubushushu yentsimbi ye-weld ziye zatshintsha uthotho. Kumaqondo obushushu aphezulu, isakhiwo se-microstructure yentsimbi engagqwaliyo ye-duplex sibangelwa yi-ferrite kunye ne-austenite ngexesha lokupholisa. Ubungakanani bemvula ye-austenite buchaphazeleka zizinto ezininzi.
Ixesha lokuthumela: Juni-26-2023