SUS316L Tsawg-Carbon Paub

SUS316L yog ib qho qis-carbon variant ntawm SUS316, nrog cov ntsiab lus carbon txwv tsawg dua los yog sib npaug li 0.03% txhawm rau tshem tawm cov kev cuam tshuam intergranular hauv welded lossis siab - daim ntawv thov kub. Nws khaws SUS316 qhov zoo tshaj plaws chloride corrosion kuj, thaum tsis txhob muaj teeb meem rhiab heev, ua rau nws yog qhov kev xaiv saum toj kawg nkaus rau cov khoom siv welded hauv marine, tshuaj thiab tshuaj industries.

Tshuaj muaj pes tsawg leeg (Key, % JIS G4305): C Tsawg dua lossis sib npaug li 0.03; Cr16.0–18.0; 10.0–14.0; Mo2.0–3.0; Mn Tsawg dua lossis sib npaug rau 2.0

Mechanical Properties (Annealed): Tensile Strength Ntau dua lossis sib npaug ntawm 485MPa; Yield zog ntau dua los yog sib npaug rau 170MPa; Elongation Ntau dua lossis sib npaug li 40%; Hardness Tsawg dua los yog sib npaug rau 217HB

Kev Ua Haujlwm Zoo: Tsis muaj intergranular corrosion tom qab vuam (tsis muaj ncej-weld kho cua sov); superior chloride corrosion kuj; zoo heev cryogenic toughness; zoo weldability thiab formability.

Daim ntawv thov: Welded marine structures, chemical pipelines, pharmaceutical reactors, LNG cia tanks, kho mob cog.

Qib sib npaugTom ntej: ASTM 316L, EN 1.4404, DIN X2CrNiMo17-12-2

Sib piv nrog SUS316: SUS316L muaj qhov zoo dua vuam corrosion kuj, thaum SUS316 muaj siab dua - qhov kub thiab txias rau cov ntawv tsis yog - welded.

FAQs

Lub luag haujlwm ntawm cov ntsiab lus qis hauv SUS316L yog dab tsi?

Cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.03%) ntawm SUS316L yog tus yuam sij rau kev tshem tawm cov kev cuam tshuam ntawm intergranular tom qab vuam, thiab nws cov txheej txheem yog los tiv thaiv cov nag lossis daus ntawm chromium carbides ntawm cov ciam teb. Rau tus qauv SUS316, vuam yuav ua kom sov cov cua sov- thaj tsam cuam tshuam rau thaj tsam 425-815℃rhiab heev, thiab cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.08% yuav txhawb kev sib xyaw ntawm cov pa roj carbon thiab chromium los ua carbides ntawm cov ciam teb, depleting chromium nyob rau hauv ib puag ncig thiab tsim corrosion.v {8} SUS316L cov ntsiab lus carbon tsawg dhau los tsim cov chromium carbides loj heev txawm tias tom qab vuam, yog li cov cua sov- cuam tshuam thaj chaw tswj kom muaj cov chromium faib thiab ruaj khov oxide txheej. Qhov kom zoo dua no ua rau SUS316L cov vuam pob qij txha zoo li corrosion{14}}tiv taus zoo li lub hauv paus hlau, tsis tas yuav tsum tau tom qab- vuam cua sov kho. Tsis tas li ntawd, cov ntsiab lus ntawm cov pa roj carbon tsawg kuj tseem txhim kho cov cryogenic toughness ntawm SUS316L, ua rau nws tsim nyog rau kev siv ntawm qhov kub thiab txias li -196 degree.

 

Vim li cas SUS316L yog cov khoom siv zoo tshaj plaws rau marine welded qauv?

SUS316L yog dav siv nyob rau hauv marine welded lug xws li nkoj hulls thiab offshore platforms, feem ntau yog vim nws zoo heev chloride corrosion kuj thiab weldability. Ua ntej, nws cov ntsiab lus 2-3% molybdenum txhim kho nws cov kev tiv thaiv rau pitting thiab crevice corrosion nyob rau hauv dej hiav txwv, xyuas kom meej tias cov qauv yuav tsis corrode sai heev nyob rau hauv hnyav marine ib puag ncig. Qhov thib ob, nws cov ntsiab lus tsis tshua muaj carbon tshem tawm cov kev cuam tshuam ntawm intergranular tom qab vuam, yog li cov khoom siv vuam loj tsis xav tau tom qab- vuam kub kho, uas txo cov nqi tsim khoom thiab siv sijhawm. Hauv qhov sib piv, tus qauv SUS316 xav tau tom qab-weld kev kho cua sov kom rov qab kho corrosion, uas yog siv tsis tau rau cov qauv marine loj. Tsis tas li ntawd, SUS316L muaj qhov zoo formability thiab toughness, uas tuaj yeem tiv taus qhov cuam tshuam ntawm dej hiav txwv nthwv dej thiab huab cua huab cua, txo qhov kev pheej hmoo ntawm kev ua haujlwm tsis zoo. Piv nrog rau lwm cov ntaub ntawv hauv hiav txwv xws li nickel alloys, SUS316L kuj tseem muaj txiaj ntsig zoo, ua rau tus nqi - xaiv zoo rau marine engineering.

 

SUS316L ua haujlwm li cas hauv cov ntawv thov cryogenic?

SUS316L muaj kev ua haujlwm zoo heev thiab muaj peev xwm tswj tau cov ductility thiab toughness ntawm qhov kub thiab txias li -196 degree, ua rau nws tsim nyog rau cryogenic cia thiab cov khoom siv thauj mus los xws li LNG tso tsheb hlau luam. Nws cov qauv siv lead ua austenitic yog qhov ruaj khov ntawm qhov kub thiab txias, tsis zoo li ferritic stainless hlau uas ua nkig thaum txias. Cov ntsiab lus qis ntawm SUS316L ntxiv ua kom zoo dua nws cov qauv nplej, txhim kho nws cov kev cuam tshuam ntawm qhov kub thiab txias, yog li nws yuav tsis tawg nyob rau hauv qhov kub hloov pauv. Nyob rau hauv kev siv tswv yim, SUS316L yog dav siv nyob rau hauv kev cia thiab kev thauj mus los ntawm liquefied natural gas, kua oxygen thiab kua nitrogen, qhov twg nws muaj peev xwm tiv taus lub siab thiab kub hloov ntawm nruab nrab. Piv nrog SUS304L, SUS316L muaj kev tiv thaiv corrosion zoo dua nyob rau hauv cov cheeb tsam uas muaj cov tshuaj chloride, ua rau nws muaj kev xaiv zoo dua rau LNG terminals thiab lwm cov chaw ua haujlwm hauv ntug dej hiav txwv.

Dab tsi yog qhov txwv ntawm SUS316L hauv siab -cov ntawv thov kub?

Txawm hais tias SUS316L muaj kev tiv thaiv corrosion zoo heev, nws qhov siab - qhov kub thiab txias yog qis dua li tus qauv SUS316, uas yog nws qhov kev txwv tseem ceeb hauv siab - daim ntawv thov kub. Cov ntsiab lus tsis tshua muaj carbon uas ua rau nws zoo heev corrosion kuj tseem txo cov chromium carbides uas tuaj yeem tsim nyob rau hauv qhov kub thiab txias, thiab cov carbides ua lub luag haujlwm hauv kev ntxiv dag zog rau cov qauv hlau. Ntawm qhov kub siab tshaj 600 degree, SUS316L lub zog tawm los txo qis dua SUS316, yog li nws tsis tsim nyog rau kev thauj khoom -cov kabmob ua haujlwm ntawm qhov kub thiab txias rau lub sijhawm ntev. Piv txwv li, nyob rau hauv industrial furnace qhov chaw los yog boiler superheater raj uas yuav tsum tau siab -kub lub zog, SUS316 los yog siab - carbon SUS316H yog ib tug zoo xaiv. Tsis tas li ntawd, thaum SUS316L raug kub siab tshaj 870℃rau lub sijhawm ntev, nws cov qauv austenitic yuav pib hloov mus rau theem nkig, ntxiv txo nws cov khoom siv kho tshuab. Txawm li cas los xij, SUS316L tseem muaj qhov zoo siab -kub corrosion tsis kam tshaj SUS304L hauv chloride- muaj ib puag ncig.

 

SUS316L puas tuaj yeem siv rau hauv cov ntawv cog lus kho mob, thiab vim li cas?

SUS316L yog dav siv nyob rau hauv kev kho mob daim ntawv thov xws li cov pob qij txha, cov cuab yeej phais thiab kho hniav, vim nws zoo heev biocompatibility, corrosion kuj thiab txhua yam khoom. Ua ntej, nws cov qauv austenitic tsis yog-sib nqus thiab muaj lub zog zoo, uas tuaj yeem phim cov khoom ntawm tib neeg cov pob txha, txo qhov kev pheej hmoo ntawm kev cog pob txha thiab txhim kho cov neeg mob kev nplij siab. Qhov thib ob, SUS316L cov ntsiab lus qis thiab molybdenum ntxiv kom ntseeg tau tias nws yuav tsis corrode nyob rau hauv tib neeg lub cev physiological ib puag ncig, tiv thaiv kev tso tawm ntawm cov hlau tsis zoo ions thiab tsis txhob inflammatory dab los yog cov ntaub so ntswg rejection. Tsis tas li ntawd, SUS316L muaj qhov zoo weldability thiab formability, tso cai rau cov neeg tsim khoom los ua cov txheej txheem cog rau hauv cov duab cog kom tau raws li qhov xav tau ntawm cov neeg mob sib txawv. Piv nrog SUS316, SUS316L cov pob qij txha vuam yog ntau dua corrosion{10}}resistant, ua rau nws haum rau welded cov cuab yeej kho mob xws li lub plawv li qub. Txawm hais tias titanium alloys muaj biocompatibility zoo dua, SUS316L muaj tus nqi tseem ceeb, ua rau nws yog qhov kev xaiv tseem ceeb rau nruab nrab thiab qis -kawg kho mob cog.