Ibyuma bitagira umugese bibiri bifite imiterere ibiri aho igice cy’ingano ya ferrite na austenite kingana na 50%. Bitewe n’imiterere yabyo ibiri, ibi byuma bihuza imiterere myiza y’ibyuma bitagira umugese bya ferrite na austenite. Muri rusange, imiterere ya ferrite (utubati duto dushingiye ku mubiri) itanga imbaraga nyinshi za mekanike, gukomera neza no kurwanya ingese neza, mu gihe imiterere ya austenite (utubati duto dushingiye ku maso) itanga ubushobozi bwo kugenda neza.
Uruvange rw'iyi miterere niyo mpamvu ibyuma bitagira umugese bibiri bikoreshwa cyane mu nganda zikora peteroli, impumuro y'amazi n'impapuro, mu mazi no mu nganda zikora amashanyarazi. Bishobora kwihanganira kwangirika kw'ibintu, kongera igihe cyo kubikoresha, no gukora mu bihe bibi cyane by'ibidukikije.
Ibikoresho bikomeye bigufasha kugabanya ubunini n'uburemere bw'ibice. Urugero, icyuma kitagira umugese cya super duplex gishobora gutanga imbaraga zikubye gatatu kugeza kuri kane z'umusaruro no kurwanya ingese kurusha icyuma kitagira umugese cya 316.
Ibyuma bibiri bitagira umugese bishyirwa mu byiciro bitatu hashingiwe ku gipimo cya chromium (Cr) ya gravimetric n'umubare ungana na PREN:
Kimwe mu bintu by'ingenzi mu gusudira DSS, SDSS, HDSS n'ibyuma byihariye bya alloy stainless ni ukugenzura ibipimo byo gusudira.
Ibisabwa mu nganda zikora ibijyanye no gusudira ibikomoka kuri peteroli ni byo bigena agaciro ntarengwa ka PREN gasabwa ku byuma bicukura. Urugero, DSS isaba PREN ya 35 naho SDSS isaba PREN ya 40. Ishusho ya 1 igaragaza DSS n'icyuma gihuzwa nacyo kuri GMAW na GTAW. Ubusanzwe, ingano ya Cr mu byuma bicukura izahura n'iy'icyuma cy'ibanze. Uburyo bumwe bwo kuzirikana iyo ukoresha GTAW ku mizi n'imiyoboro ishyushye ni ugukoresha ibyuma bicukura cyane. Niba icyuma gicukura kidahuye bitewe n'ikoranabuhanga ribi, icyuma gicukura cyane gishobora gutanga PREN yifuzwa n'ibindi bipimo ku gipimo gicukura.
Urugero rwo kubigaragaza, bamwe mu bakora basaba gukoresha insinga zuzuza za SDSS (25% Cr) ku nsinga zishingiye kuri DSS (22% Cr), n'insinga zuzuza za HDSS (27% Cr) muri aloyi zishingiye kuri SDSS (25% Cr). Ku nsinga zishingiye kuri HDSS, ushobora kandi gukoresha insinga zuzuza za HDSS. Iyi icyuma cya austenitic-ferritic duplex ifite hafi 65% ​​ferrite, 27% chromium, 6.5% nickel, 5% molybdenum kandi ifatwa nk'aho iri munsi ya 0.015% ya karubone nkeya.
Ugereranyije na SDSS, HDSS packing ifite imbaraga nyinshi mu gutanga umusaruro kandi irwanya cyane ingese n'ingufu. Inarwanya cyane gusenyuka kw'imitsi bitewe na hydrogen ndetse inarwanya cyane ibidukikije bifite aside nyinshi kurusha SDSS. Ingufu zayo nyinshi bivuze ko ari nkeya mu gihe cyo gukora imiyoboro, kubera ko isesengura ry'ibintu bito ritakenewe kugira ngo icyuma gihuze imbaraga, kandi ibipimo byo kwemerwa bishobora kuba bidakomeye cyane.
Bitewe n'ubwoko bwinshi bw'ibikoresho by'ibanze, ibisabwa mu mashini n'imiterere ya serivisi, nyamuneka tekereza kugisha inama inzobere mu gukoresha DSS no mu byuma byuzuza ibyuma mbere yo gutangira umushinga wawe utaha.
WELDER, yahoze ari Practical Welding Today, yerekana abantu nyakuri bakora ibikoresho dukoresha kandi dukorana na bo buri munsi. Iki kinyamakuru kimaze imyaka irenga 20 gikorera umuryango w’abasudira muri Amerika ya Ruguru.
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