Views: 0 Mutsari: Muhleri wa sayiti Ku kandziyisa nkarhi: 2022-09-20 Masungulo: Ndhawu
Kuna tinxaka totala ta austenitic stainless steel, 304 stainless steel kahle kahle i muxaka wa austenitic stainless steel. Kutani a swi na mhaka leswaku i swinene kumbe swi bihile. Hangao Tech (Michini ya Seko) . Muchini wo endla ti duct to endla tiphayiphi ta stainless steel steel ta tiindasitiri wu nga khoma hi ku olova switirhisiwa swo hambana swa nsimbi yo ka yi nga tshwukanga swo fana na austenite, ferrite, nsimbi ya 2205, na swin’wana na swin’wana Loko u ri na swilaveko swo hlawuleka swa phurosese, ku fana na ku levela ka le ndzeni ka weld, xitshunxo xa in-line bright solid, kumbe swilaveko swa khwalithi ya le henhla swa ku lulamisiwa ka weld, layini ya hina ya vuhumelerisi bya ntolovelo yi nga hlangana na vona hinkwavo.
Austenitic stainless steels i ndyangu lowu tirhisiwaka ngopfu wa stainless steel lowu nga na xiphemu xa makete xa sweswinyana xa 75%. Tani hileswi vito rivulaka swona, microstructure yivumbiwa hi austenite phase. Eka 300 series, nhlayo ya chromium i 16%-22% naswona nhlayo ya nickel i 8%-14%. Loko nickel yi engetela ductility, yitala kuva na ku cinca cinca ka nxavo wa nhundzu. Yi fikelele $50,000 hi thani hi 2007, kambe sweswi yi tshinelela $10,000 hi thani. Nxaxamelo wa 200 wu endliwile ku tlherisela nxavo wa le henhla wa nickel, ku siva swin’wana swa swilo swa nickel hi manganese na nitrogen.
Nsimbi leyi nga riki na swilo leyi nga riki na swilo leyi tirhisiwaka ngopfu ya austenitic stainless steel 304 .
Xivumbeko xa yona xina 18% wa chromium na 8% wa nickel, naswona minkarhi yin’wana xivuriwa 18-8 stainless steel. Kambe vito leri ari hlohleteriwi kuva ritirhisiwa hiku angarhela tani hileswi ti tolerances eka ti ranges leti pfumeleriwaka eka ti elements leti ti hlangana na ti grade tin’wana. Xikombiso, SS31 yina chromium na nickel content leyi fanaka, kambe yitlhela yiva na kwalomu ka 2% molybdenum eka ku lwisana na corrosion yo engetelela. Hi nkarhi wa ku welda kumbe ku kufumela ka annealing, chromium carbide yi khuluka eka mindzilakano ya microstructure grain. Eka tindzhawu leti, Chromium yi phakela ti carbides hiku lahlekeriwa hi tinsimbi leti rhendzeleke. Ti low carbon versions ta austenitic stainless steels ti kombisiwa hi xilandzi xa L, kufana na 304L kumbe 316L. Ndlela yin’wana yo sivela ku twa ku vava i ku chela titanium kumbe niobium, leyi bohaka hi ku hlawuleka eka khaboni.
Austenitic stainless steels a yi tshunguriwi hi ku hisa .
Tin’wana ta ti stainless steels ta 200, 300, 400 series ti tirha ti nonoka kuva ti tiya hi nkarhi wa maendlelo yo vumba, kambe ti austenitic stainless steels ta hatlisa naswona ta olova ku ti endla hi muchini. Loko ti austenitic stainless steels hi xitalo tiri na ku tiya ka corrosion hiku angarhela, xivumbeko na weldability, ku cinca cinca eka minxavo ya nickel swi endle leswaku tikhamphani tin’wana ti endla ku cinca ka michini ku amukela ku vumbiwa ka ti ferritic alloys.
Eka switirhisiwa swa mahiselo yale henhla, kufana na ti exhaust systems letinga fika eka 1650 degrees Fahrenheit, ti ferritic stainless steels tina swivumbeko swo antswa swa tensile xikan’we naku lwisana na ku karhala ka mahiselo. Tiva na ku anama ka mahiselo yale hansi xikan’we na thermal conductivity yale henhla kutlula ti austenitic stainless steels. Ferritic stainless steels yiva brittle loko mahiselo ya hunguteka. Mahiselo ya ku cinca ya kwalomu ka 32 degrees Fahrenheit, kambe swiya hi xivumbeko xa alloy. Ti austenitic stainless steels ati tshuki ti brittle eka mahiselo yale hansi.