Kwindawo yenzululwazi yemathiriyeli, uhlobo olutsha lwensimbi engenasici eyaziwa ngokuba yi-duplex stainless steel yenza amaza.Le alloy ephawulekayo inesakhiwo esikhethekileyo, kunye nesigaba se-ferrite kunye nesigaba se-austenite nganye ibalwa kwisiqingatha sesakhiwo sayo esiqinileyo.Okona kutsala umdla ngakumbi kukuba owona mxholo wesigaba sisezantsi unokufikelela kumyinge wama-30%.
I-Duplex yensimbi engenasici ibonisa iimpawu ezibalaseleyo zoomatshini ngenxa yezigaba zayo ezimbini.Ngomxholo wekhabhoni ephantsi, umxholo we-chromium usuka kwi-18% ukuya kwi-28%, ngelixa umxholo we-nickel umi phakathi kwe-3% kunye ne-10%.Ukongeza kwezi zixhobo zibalulekileyo, iintlobo ezithile zensimbi engenasici ye-duplex nazo zibandakanya izinto ezixutywayo ezifana ne-molybdenum (Mo), ubhedu (Cu), i-niobium (Nb), i-titanium (Ti), kunye ne-nitrogen (N).
Uphawu olukhethekileyo lwale ntsimbi luxhomekeke ekubeni idibanisa iimpawu ezintle ze-austenitic kunye ne-ferritic stainless steels.Ngokungafaniyo neqabane layo le-ferrite, i-duplex steel stainless iqhayisa ngeplastiki ephezulu kunye nokuqina.Ukongeza, ibonisa ukuxhathisa okumangalisayo kuxinzelelo lwe-corrosion cracking, iyenza ibe yinto enqwenelekayo kakhulu kwizicelo ezahlukeneyo.
Omnye umba obalulekileyo owahlula i-duplex steel stainless steel kukumelana kwayo ne-corrosion, luhlobo oluqhelekileyo lokutya okuhlangatyezwana nalo kwiimeko ezirhabaxa ezifana nemizi-mveliso yaselwandle neyemichiza.Oku kuxhathisa kumhlwa kunokunxulunyaniswa nekhromium ephezulu yealloyi kunye nomxholo we-molybdenum xa kuthelekiswa neentsimbi zemveli ezingenasici.
I-microstructure ekhethekileyo ye-duplex yensimbi engenasici ikhulisa ukuqina kwayo, okwenza ukuba ifaneleke kwizicelo ezininzi.Ifumana ukusetyenziswa okubanzi kumashishini afuna izinto ezomeleleyo kunye ne-corrosion-resistant, kubandakanywa nokuphononongwa kwe-oyile engaselunxwemeni kunye negesi, izityalo zokukhupha ityuwa, ukusetyenzwa kweekhemikhali, kunye neziseko zokuthutha.
Ngaphezu koko, amandla aphezulu ale ntsimbi yenza ukuba kube lula kunye noyilo olungabizi kakhulu, okuvumela amashishini ukuba afezekise ukusebenza kakuhle.Ukuchasana kwayo okungaqhelekanga kwi-corrosion yendawo iqinisekisa ixesha elide lobomi bezixhobo kunye nezakhiwo, ukunciphisa iindleko zokugcinwa kwexesha elide.
Kwiminyaka yakutshanje, imfuno ye-duplex stainless steel ibone ukwanda okubonakalayo, kunye nabavelisi baphuhlisa amabakala amatsha ukujongana nezicelo ezahlukeneyo.Olu phuhliso lujolise ekwandiseni iipropathi ezinjengokumelana nomhlwa, amandla, kunye ne-weldability, ukwandisa ngakumbi uluhlu olunokwenzeka lwentsimbi yosetyenziso.
Ngophando oluqhubekayo kunye nophuhliso, ikamva le-duplex stainless steel libukeka lithembisa.Izazinzulu kunye neenjineli ziyaqhubeka nokuphonononga iindlela zokuphucula iimpawu zayo kunye nokwandisa ukusebenza kwayo kumashishini ahlukeneyo.
Njengoko imizi-mveliso izabalazela kwiinkqubo ezizinzileyo, i-duplex steel stainless inika isisombululo esisebenzayo ngenxa yokuphila ixesha elide, ukuphinda isetyenziswe, kunye nesidingo esincitshisiweyo sokugcinwa kwayo.Lo mba wokusingqongileyo uwubeka njengomntu okhuphisanayo kugqatso lwemathiriyeli ezinzileyo.
Isishwankathelo, i-duplex steel stainless imele ukuphumelela okuphawulekayo kwisayensi yezinto, ukudibanisa iimpawu ezintle ze-austenitic kunye ne-ferritic stainless steels.Ngeempawu zayo ezikhethekileyo zoomatshini, ukuxhathisa kwiindidi ezahlukeneyo zomhlwa, kunye nokwanda kwemfuno kuwo wonke amashishini, le ngxubevange entsha ikulungele ukuguqula indlela esijongana ngayo noyilo lwezakhiwo kunye nokusetyenziswa kwemizi-mveliso.
Ixesha lokuposa: Jul-18-2023