Waliwo ebika bingi eby’ekyuma ekitali kizimbulukuse ekya austenitic, 304 stainless steel mu butuufu kika kya austenitic stainless steel. Kale si kikulu oba kirungi oba kibi. Hangao Tech (Ebyuma bya Seko) Ekyuma ekitali kizimbulukuse mu makolero payipu okufulumya layini y’okufulumya omukutu kyangu okukwata ebintu eby’enjawulo eby’ekyuma ekitali kizimbulukuse nga austenite, ferrite, 2205 steel, etc. Bw’oba n’ebyetaago eby’enjawulo eby’enkola, gamba nga internal weld leveling, in-line bright solid solution, oba ebyetaago eby’omutindo ogwa waggulu okukola weld, layini yaffe eya custom production esobola okuzisisinkana zonna.
Austenitic stainless steels ze famire y’ebyuma ebitali bizimbulukuse ebisinga okukozesebwa nga akatale akaakafuluma kali ku bitundu 75%. Nga erinnya bwe liraga, microstructure erimu ekitundu kya austenite. Mu 300 series, ebirimu chromium biri 16%-22% ate ebirimu nikele biri 8%-14%. Wadde nga nickel eyongera ku ductility, etera okukyukakyuka mu bbeeyi y’ebintu. Yatuuka ku ddoola 50,000 buli ttani mu 2007, kyokka kati esemberera ddoola 10,000 buli ttani. Omusomo guno ogwa 200 gwakolebwa okusobola okuliyirira ebbeeyi ya nikele ennyingi, n’adda mu bigere ebimu ku birimu nickel ne biteekebwamu Manganese ne Nitrogen.
Ekyuma ekitali kizimbulukuse ekisinga okukozesebwa mu Austenitic 304 stainless steel .
Ekirungo kyayo kirimu chromium 18% ne nickel 8%, era oluusi kiyitibwa ekyuma ekitali kizimbulukuse 18-8. Naye, erinnya lino terisemba kukozesebwa mu bulambalamba nga okugumiikiriza mu bbanga erikkiriza ku bintu bino bikwatagana n’obubonero obulala. Okugeza, SS31 erina chromium ne nickel ezifaanagana, naye era erina nga 2% molybdenum okwongera okuziyiza okukulukuta. Mu kiseera ky’okuweta oba okunyogoza mu ngeri ey’okuzimbulukuka, enkuba ya chromium carbide ekola ku nsalo z’empeke za microstructure. Mu bitundu bino, Chromium egaba carbides ku ssente z’ebyuma ebikyetoolodde. Enkyusa za kaboni entono ez’ebyuma ebitali bimenyamenya (austenitic stainless steels) ziragibwa n’enkomerero L, nga 304L oba 316L. Engeri endala ey’okuziyiza okumanyibwa kwe kuteekamu titanium oba niobium, ekisiba okusinga kaboni.
Austenitic stainless steels tezijjanjabibwa bbugumu .
Ebimu ku 200, 300, 400 series stainless steels bikola work hardened okufuuka eby’amaanyi mu nkola y’okukola, naye austenitic stainless steels zibeera za mangu era nga nnyangu okukozesa. Wadde ng’ebyuma ebitali bimenyamenya (austenitic stainless steels) okutwalira awamu birina obuziyiza obulungi okutwalira awamu okukulukuta, okutondebwa n’okuweta, okukyukakyuka mu bbeeyi ya nikele kuleetedde kkampuni ezimu okukola enkyukakyuka mu byuma okusobola okusikiriza okutondebwa kw’ebirungo ebiyitibwa ferritic alloys.
Mu kukozesa ebbugumu eringi, gamba ng’enkola z’omukka ezifuluma ezisobola okutuuka ku diguli 1650 Fahrenheit, ebyuma ebitali bimenyamenya ebiyitibwa ferritic birina eby’obugagga ebirungi eby’okusika n’okuziyiza obukoowu bw’ebbugumu. Zirina okugaziwa kw’ebbugumu okutono n’obutambuzi bw’ebbugumu obw’amaanyi okusinga ebyuma ebitali bimenyamenya (austenitic stainless steels). Ebyuma ebitali bimenyamenya ebiyitibwa ferritic bifuuka ebikalu ng’ebbugumu likendeera. Ebbugumu ly’enkyukakyuka liri nga 32 degrees fahrenheit, naye nga lisinziira ku aloy composition. Ebyuma ebitali bimenyamenya ebiyitibwa austenitic tebifuuka bya bbugumu ku bbugumu eri wansi.
