Qhov loj me "Od: 1 \ / 2" "~ 48" "
Lub unr unic s31803 (ASTM F51) Cov lus qhia tshwj xeeb tau ua rau muaj ntau dua Superseded los ntawm Unvent S32205 (1.4462, ASTM F60). Qhov no qhia txog lawv txoj kev xav kom ua kom tiav ntawm cov khoom siv alloy, ua tsaug rau kev txhim kho AOD cov txheej txheem ntawm kev tswj hwm. Ib qho ntxiv, nws tso cai rau cuam tshuam rau cov nitrogen ntxiv qib ntxiv dua li yog tam sim no yog nyob tom qab keeb kwm. Yog li ntawd, qhov siab tshaj plaws ua tiav cov qib hloov kho kom ua kom ntau cov ntsiab lus ntawm chromium (CR), Molybdenum (mo) thiab nitrogen (n).
Peb tus TI Qib 2 Flange, Carbon Steel A694 F60 F65 (TTM ARB, ASTM A182 S32750 Stad Bolt yog qhov tshiab hauv thev naus laus zis thiab tsim nyog hauv cov qauv. Lawv muag tau zoo nyob hauv tsev thiab txawv tebchaws thiab tau txais tos los ntawm cov neeg siv feem ntau. Los ntawm kev ua haujlwm zoo, peb vam tias yuav ua rau muaj kev loj hlob ua kom muaj kev loj hlob ntawm kev tswj hwm ib puag ncig thiab qhov tseem ceeb ntawm cov muaj zog tib neeg cov peev txheej. Tam sim no, peb tab tom siv zog ntxiv rau hauv qhov tshiab ib txwm, cia siab tsim kho tus qauv tshiab ntawm lub tuam txhab kev txhim kho hauv kev coj tshiab. Thaum nkag siab cov ntsiab lus tseem ceeb ntawm kev siv tshuab, lub tuam txhab them ntau dua los muab cov khoom lag luam thiab cov kev pabcuam zoo dua. Cov cuab yeej siv tau zoo heev, cov txuj ci kws tshaj lij, cov kev pab ntau lawm, kev lees paub zoo thiab raws sijhawm tau peb cov neeg siv khoom.
S31803 yog cov qauv sau ua ke (tsis ua haujlwm) rau thawj lub duplex stainless hlau stainless. Cov txheej txheem tsis zoo tau tsim los ntawm cov pab pawg ua lag luam hauv xyoo 1970 los txo kev tsis meej pem thaum tib almoy tau hu ua ntau yam sib txawv, thiab hloov ua lwm yam. Txhua tus hlau yog sawv cev los ntawm ib tsab ntawv ua raws li tsib tus lej, qhov twg tsab ntawv sawv cev ntawm cov hlau series, i.E. s rau stainless hlau.
International Stainless Hlau Txawv Txawv Txoj Cai Lub Tebchaws Asmeskas Hlau thiab Hlau Lub Koom Haum Siv Peb Tus lej los cim ntau cov qauv ntawm cov kab mob stainless. Ntawm lawv: ¢ atausustenitic stainless hlau yog cim nrog 200 thiab 300 series cov lej. For example, some of the more common austenitic stainless steels are marked with 302, 304, 316 and 310, ¢ÚFerritic and martensitic stainless steels are used The number of the 400 series is represented. ¢ferritic stainless hlau yog cim nrog 430 thiab 446, cov xim tawv tawv me me), muaj nag lossis 4%
Rau cov ntawv sau zeb hauv av uas xav tau cov qib qis dua uas tsis muaj cov xeb txaus tiv thaiv. Raws li 22% chromium cov ntsiab lus, lawv muaj cov ustenitic: Ferritic microstructure uas muaj zog dua, corrosion tsis kam thiab nqi-ua hauj lwm zoo.
Zoo li cov hlau, 316 stainless hlau yog feem ntau sib xyaw ntawm cov hlau thiab carbon. Txawm li cas los xij, stainless hlau kuj muaj tsawg kawg yog 10.5% chromium, lub teeb duab me me uas imparts ib hlau saum cov hlau nto ua tiav thiab zoo heev corrosion. Stainless hlau yog qhov zoo tagnrho rau cov ntawv thov ntev lub sijhawm uas yuav raug rau cov khoom, noo noo thiab cov peev xwm corrosive. Nws tseem yog qhov zoo rau kev lag luam rhiab xws li kev npaj khoom noj thiab chaw muag khoom, uas muaj kev pheej hmoo ntawm kev paug qis dua.
Stainless hlau yuav tsum muaj tsawg kawg 10.5 feem pua chromium. Nyob ntawm cov qhab nia, nws yuav muaj ntau dua cov khoom siv chromium ntau dua li molybdenum, noy, tooj liab, nitrogen, phosphorous lossis selenium.
