Steel 12x18n10t: yam ntxwv, txhais

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Ib qho ntawm feem ntau thiab siv ntawm cov ntaub ntawv stainless yog qib steel 12X18n10t. Cov yam ntxwv ntawm cov hlau, uas peb yuav xav txog hauv tsab xov xwm niaj hnub no, pab txhawb qhov no mus rau qhov loj. Yog hais tias peb piav qhia txog cov khoom ntawm qhov muaj pes tsawg leeg, ces nws yog ib qho tsim nyog los qhia qhov no tias nws muaj titanium, tab sis belongs rau chav kawm austenitic.

piav qhia dav dav ntawm qhov tseem ceeb

Yog li, peb tuaj yeem pib nrog qhov tseeb tias cov tshuaj muaj pes tsawg leeg ntawm cov hlau yog tswj los ntawm cov qub GOST 5632-72. Ntawm qhov zoo tshaj plaws ntawm cov khoom siv no, muaj kev cuam tshuam lub zog thiab siab ductility sawv tawm. Txij li thaum qib ntawm cov alloy belongs rau cov chav kawm austenitic, ces, ntawm chav kawm, nws tau txais kev kho cua sov. Cov txheej txheem no muaj nyob rau hauv tus txheej txheem ntawm hardening ntawm ib tug kub ntawm 1050 mus rau 1080 degrees Celsius, ua raws li los ntawm txias cov khoom nyob rau hauv dej. Ua raws li cov txheej txheem no kom ua tiav qhov siab tshaj plaws viscosity thiab plasticity. Lub zog thiab hardness ntawm cov khoomyuav yog qhov nruab nrab.

Lwm qhov tseem ceeb yog tias thaum ua haujlwm nrog kub txog +600 degrees Celsius, cov yam ntxwv ntawm 12x18n10t ua rau nws tuaj yeem siv cov alloy ua cov cua sov. Chromium thiab npib tsib xee yog siv los ua cov ntsiab lus alloying.

Lwm yam khoom tseem ceeb yog cov hlau ib leeg muaj cov qauv ruaj khov ntawm qib austenitic nrog me me ntawm titanium carbides. Cov tshuaj no ntxiv rau kom tsis txhob muaj qhov tsis zoo li intergranular corrosion. Lub zog ntawm cov hlau uas muaj nyob rau hauv cov chav kawm austenitic thiab austenitic-ferritic tsis tshaj qhov txwv ntawm 700-850 MPa.

Siv steel

Alloy 12x18n10t, uas tuaj yeem hu ua stainless chromium-nickel steel, tuaj yeem siv rau ntau yam kev siv. Piv txwv li, xws li ib tug muaj pes tsawg leeg nrog sib txawv degrees ntawm lub zog yog ntse siv nyob rau hauv uas nws yog tsim nyog los ua ke siab zog thiab elastic zog ntawm cov hlau qhov chaw ua hauj lwm nyob rau hauv ib tug aggression ib puag ncig.

Cov khoom siv khoom siv

Yog tias peb tham txog cov khoom siv tseem ceeb ntawm cov hlau no, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov cov hauv qab no. Xws li cov yam ntxwv ntawm 12x18n10t raws li tensile lub zog, nrog rau cov txheeb ze elongation, yog tsim los nrog ib co degree ntawm approximation. Kuj tseem muaj cov ntaub ntawv siv uas tsis suav nrog qhov hardenability ntawm cov hlau, uas tseem ceeb heev nyob ntawm cov tshuaj muaj pes tsawg leeg, txoj kev melting thiab cov tsis muaj.tau tshwm sim ua ntej ua.

Cov kws tshaj lij pom zoo kom siv cov hlau no nyob rau hauv rooj plaub uas tsim nyog los tsim cov khoom siv welded, hauv kev daws teeb meem ntawm ntau cov kua qaub (nitric, phosphoric, thiab lwm yam). Nws tseem muaj peev xwm tsim tau ntau yam khoom uas tuaj yeem ua haujlwm hauv qhov kub thiab txias ntawm -196 txog +600 degrees Celsius nyob rau hauv siab. Nws tseem tsim nyog sau cia ntawm no tias yog tias muaj kev sib raug zoo nrog ib puag ncig kev ua phem, ces qhov ntsuas kub siab yuav poob ntawm 600 txog 350 degrees.

yam ntxwv 12x18n10t. Deciphering markings

Yog li, yog tias peb tham txog kev txiav txim siab hauv chav kawm no, tau kawg, peb yuav tsum pib nrog cov ntsiab lus dav dav. Thawj qhov uas koj pom hauv lub npe yog cov lej. Tus nqi no qhia tau hais tias qhov nruab nrab carbon cov ntsiab lus nyob rau hauv pua pua ntawm ib feem pua ntawm qhov muaj pes tsawg leeg. Yog tias peb tham tshwj xeeb txog cov hlau no, cov ntsiab lus ntawm no yuav yog 0.12%. Yog tias, piv txwv li, tsuas yog ib tus lej tau qhia thaum pib, qhov no txhais tau hais tias cov pa roj carbon ntau nce mus rau feem kaum ntawm ib feem pua. Yog tias daim duab tsis tuaj lawm, ces cov khoom no hauv cov khoom yog 1% lossis ntau dua.

Tom ntej no, xav txog tsab ntawv X thiab tus lej 18 ua ke. Tsab ntawv qhia tias muaj pes tsawg leeg muaj chromium, thiab tus lej qhia tias nws nyob hauv feem pua. Hauv qhov no, cov ntsiab lus Cr yog 18%. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov ntawm no tias tsuas yog pua pua lossis kaum ib feem pua ntawm cov pa roj carbon monoxide xwb, thiab cov lej no tsuas yog thaum pib. Tag nrho lwm cov yam ntxwv ntawm steel 12x18n10tqhia nyob rau hauv tag nrho cov feem pua.

Ntxiv mus, txhua yam ua tau yooj yim, h10 hais tias muaj pes tsawg leeg muaj 10% npib tsib xee. Raws li tsab ntawv kawg T, nws qhia cov ntsiab lus ntawm titanium hauv cov hlau. Daim duab pom tau tias ploj lawm ntawm no, uas txhais tau hais tias qhov nyiaj tsawg heev - txog 1%. Cov ntsiab lus titanium tsis tuaj yeem siab tshaj 1.5% ntawm tag nrho pawg pawg.

Los xaus, cov yam ntxwv ntawm steel 12x18n10t yog raws li nram no: 0.12% carbon, 18% chromium, 10% npib tsib xee, me me ntawm titanium, uas tsis pub tshaj 1.5%. Txhua yam no tuaj yeem kawm los ntawm lub npe xwb.

Yuav ua li cas cov ntsiab lus alloying hloov cov qauv ntawm cov hlau?

Ib txwm, txhua lub ntsiab lus uas tau ntxiv rau hauv cov khoom muaj nws tus kheej cov txiaj ntsig ntawm cov yam ntxwv kawg ntawm stainless hlau 12x18n10t.

Piv txwv li, npib tsib xee. Kev siv cov khoom no ua cov khoom siv alloying ua rau cov g - cheeb tsam. Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov ntawm no tias yuav tsum muaj qhov txaus ntawm nws - los ntawm 8 mus rau 12% - txhawm rau kom tau txais cov txiaj ntsig nthuav dav. Lwm qhov tseeb tseem ceeb yog qhov sib ntxiv ntawm cov khoom tshwj xeeb no hloov cov hlau rau hauv chav kawm austenitic, thiab qhov no yog qhov tseem ceeb. Kev hloov mus rau hauv chav kawm no tso cai rau koj los ua ke cov khoom lag luam siab heev ntawm cov hlau thiab ntau yam ntawm ntau yam kev ua tau zoo. Tsis tas li ntawd, qhov sib ntxiv ntawm npib tsib xee ua rau muaj kev tiv thaiv corrosion thiab tso cai rau kev siv cov hlau hauv cov chaw uas muaj kev sib cuag nrog cov xov xwm aggressive (acids).

Zoo yam ntxwv Art. 12x18x10t

Ib feem ntauCov kev siv ntau tshaj plaws rau kev ua kom muaj zog yog kev kho cua sov siab (HTHT). Txhawm rau tshawb xyuas cov txiaj ntsig ntawm HTMT ntawm cov hlau no, cov hlau nplaum 100 x 100 mm thiab qhov ntev ntawm 2.5 mus rau 5 m raug xaiv. Kev ua kom tawv tawv tau ua rau ntawm 350 mills. 1200 degrees. Tom qab ntawd lawv tau khaws cia nyob rau hauv qhov kub ntawm tib yam li 2-3 teev. Cov hlau nws tus kheej tau dov los ntawm kev siv cov tshuab dov pa.

Nws tuaj yeem ntxiv tau tias cov hlau 12x18n10t muaj zog ntau dua, piv txwv li, 08x18n10t, tab sis tib lub sijhawm, qhov feem pua ntawm softening nrog qhov kub thiab txias yog nce. Qhov no yog vim qhov sib txawv ntawm cov ntsiab lus carbon.

Dab tsi yog qhov tseem ceeb tshaj los hais txog qhov ntsuas kub yog tias cov hlau ua haujlwm ntawm qhov ntsuas ntawm 800 degrees, ces nws lub sijhawm ua haujlwm siab tshaj plaws yog li 10,000 teev.