Taw qhia

Qib 316 yog tus qauv molybdenum-bearing qib, thib ob hauv qhov tseem ceeb rau 304 ntawm austenitic stainless hlau.Lub molybdenum muab 316 zoo tag nrho corrosion resistant zog tshaj Qib 304, tshwj xeeb tshaj yog siab dua rau pitting thiab crevice corrosion nyob rau hauv chloride ib puag ncig.

Qib 316L, qis carbon version ntawm 316 thiab tiv thaiv kab mob los ntawm rhiab heev (grain ciam teb carbide nag lossis daus).Yog li nws tau siv dav hauv cov ntsuas hnyav welded Cheebtsam (tshaj li 6 hli).Feem ntau tsis muaj nqi sib txawv ntawm 316 thiab 316L stainless hlau.

Cov qauv austenitic kuj muab cov qhab nia zoo heev, txawm tias mus rau qhov kub thiab txias.

Piv rau chromium-nickel austenitic stainless hlau, 316L stainless hlau muaj ntau dua creep, kev nyuaj siab rau rupture thiab tensile lub zog ntawm siab kub.

Cov khoom tseem ceeb

Cov khoom no tau teev tseg rau cov khoom lag luam tiaj tus (phaj, ntawv thiab coil) hauv ASTM A240 / A240M.Zoo sib xws tab sis tsis tas yuav zoo ib yam khoom yog teev rau lwm yam khoom xws li yeeb nkab thiab bar hauv lawv cov specifications.

Kev sib xyaw

Table 1. Muaj ntau hom rau 316L stainless hlau.

Mechanical Properties

Rooj 2. Mechanical zog ntawm 316L stainless hlau.

Lub cev muaj zog

Table 3.Cov khoom siv lub cev zoo rau 316 qib stainless hlau.

Qib Specification piv

Table 4.Qib specifications rau 316L stainless hlau.

Nco tseg: Cov kev sib piv no tsuas yog kwv yees xwb.Daim ntawv teev npe yog npaj raws li kev sib piv ntawm cov khoom siv zoo sib xws tsis yog raws li lub sijhawm ntawm cov ntawv cog lus sib npaug.Yog tias qhov sib npaug tiag tiag xav tau thawj cov ntsiab lus yuav tsum tau sab laj.

Cov qhab nia xaiv tau

Table 5. Muaj peev xwm hloov qib rau 316 stainless hlau.

Table 5.Muaj peev xwm hloov qib rau 316 stainless hlau.

Qib

Vim li cas nws thiaj yuav raug xaiv los ntawm 316?

317l ua

Kev tiv thaiv ntau dua rau cov tshuaj chlorides dua 316L, tab sis nrog kev ua haujlwm zoo sib xws rau kev ntxhov siab corrosion tawg.

Corrosion Resistance

Zoo heev nyob rau hauv ntau yam atmospheric ib puag ncig thiab ntau corrosive xov xwm - feem ntau resistant ntau tshaj 304. Raws li pitting thiab crevice corrosion nyob rau hauv sov chloride ib puag ncig, thiab kev nyuaj siab corrosion cracking saum toj no txog 60°C. Pom zoo rau cov dej haus uas muaj txog li 1000mg / L chlorides ntawm qhov kub thiab txias, txo kom txog li 500mg / L ntawm 60°C.

316 feem ntau yog suav tias yog tus qauv“marine qib stainless hlau”, tab sis nws tsis resistant rau dej hiav txwv sov.Hauv ntau thaj chaw hauv hiav txwv 316 pom muaj qhov corrosion ntawm qhov chaw, feem ntau pom tau tias yog xim av xim av.Qhov no tshwj xeeb tshaj yog txuam nrog crevices thiab ntxhib nto tiav.

Thaum tshav kub kub Resistance

Zoo oxidation kuj nyob rau hauv intermittent kev pab rau 870°C thiab hauv kev pabcuam txuas mus rau 925°C. Kev siv txuas ntxiv ntawm 316 hauv 425-860°C ntau tsis pom zoo yog tias tom qab aqueous corrosion kuj tseem ceeb.Qib 316L yog tiv taus ntau dua rau cov nag lossis daus thiab tuaj yeem siv rau hauv qhov kub thiab txias.Qib 316H muaj lub zog siab dua ntawm qhov kub siab thiab qee zaum siv rau cov qauv thiab cov ntawv thov uas muaj qhov kub siab tshaj li 500°C.

Kev kho cua sov

Kev Kho Hniav (Annealing) - Kub rau 1010-1120°C thiab txias sai sai.Cov qib no tsis tuaj yeem ua kom tawv nqaij los ntawm kev kho cua sov.

Vuam

Weldability zoo heev los ntawm tag nrho cov txheej txheem fusion thiab tsis kam, ob qho tib si nrog thiab tsis muaj cov khoom siv hlau.Hnyav welded seem nyob rau hauv Qib 316 yuav tsum tau tom qab vuam annealing rau siab tshaj corrosion kuj.Qhov no tsis xav tau rau 316L.

316L stainless hlau tsis yog feem ntau weldable siv oxyacetylene vuam txoj kev.

Tshuab dhos

316L stainless hlau nyhav ua hauj lwm harden yog machined sai heev.Vim li no, kev ceev qis thiab kev pub noj tas li raug pom zoo.

316L stainless hlau kuj tseem yooj yim rau tshuab piv rau 316 stainless hlau vim nws cov ntsiab lus qis dua.

Kub thiab txias ua haujlwm

316L stainless hlau tuaj yeem ua haujlwm kub siv cov txheej txheem kub ua haujlwm feem ntau.Qhov zoo tshaj plaws kub ua haujlwm kub yuav tsum nyob rau hauv thaj tsam 1150-1260°C, thiab yeej yuav tsum tsis txhob tsawg dua 930°C. Tom qab ua hauj lwm annealing yuav tsum tau nqa tawm kom induce siab corrosion kuj.

Feem ntau cov haujlwm ua haujlwm txias xws li shearing, kos duab thiab stamping tuaj yeem ua tau ntawm 316L stainless hlau.Tom qab ua haujlwm annealing yuav tsum tau ua kom tshem tawm cov kev ntxhov siab sab hauv.

Hardening thiab ua hauj lwm hardening

316L stainless hlau tsis tawv hauv kev teb rau kev kho cua sov.Nws tuaj yeem ua kom tawv tawv los ntawm kev ua haujlwm txias, uas tuaj yeem ua rau muaj zog ntxiv.

Daim ntawv thov

Cov ntawv thov ib txwm muaj xws li:

•Cov khoom siv npaj zaub mov tshwj xeeb tshaj yog nyob rau hauv ib puag ncig chloride.

•Pharmaceuticals

•Kev siv dej hiav txwv

•Architectural applications

•Kev kho mob cog, nrog rau cov pins, screws thiab orthopedic implants zoo li tag nrho lub duav thiab lub hauv caug hloov

•Fasteners