Cov yam ntxwv vuam ntawm Anustenitic Stainless hlau: txoj kev ntxhov siab yas thiab kev ntxhov siab thaum lub sij hawm loj heev, tab sis cov tawg txias tsis tshua pom. Tsis muaj ib qho chaw tawv tawv tawv thiab cov qoob loo sib xyaw hauv cov weld, yog li lub zog tensile ntawm Weld yog tus siab.
Cov teeb meem tseem ceeb ntawm Austenitic Stainless Hlau Vuam: Loj Vuam deformation; Vim tias nws cov hmoov nplej ciam ciam thiab rhiab heev rau qee qhov kev tsis txaus siab (s, p), nws yooj yim los ua cov kab txuas kub.
Tsib qhov kev siv hluav taws xob loj thiab kho kev ntsuas ntawm Austenitic Stainless hlau
01 Qhov tsim ntawm chromium carbide txo lub peev xwm ntawm weld kom tiv thaiv intergranular corrosion.
Kev txhim kho kev txhim kho: raws li kev xav ntawm chromium depretion thaum 450-850 ℃, uas yog tsis txaus tiv thaiv corrosion.
(1) Cov kev ntsuas hauv qab no tuaj yeem siv los txwv txoj kev xeb nruab nrab ntawm Weld Seam thiab cov xeb hauv cov chaw kub ntawm cov hom phiaj:
a. Txo cov ntsiab lus carbon ntawm lub hauv paus hlau thiab cov weld, thiab ntxiv cov stabilizing ntsiab ti, NB thiab lwm cov ntsiab lus rau kev tsim ntawm CR23C6.
b. Ua rau lub weld daim ntawv ib qauv txheej txheem ntawm Austenite thiab ib qho me me ntawm cov ferrite. Thaum muaj qee tus nqi ntawm ferrite nyob rau hauv weld, cov nplej tuaj yeem ua kom zoo nkauj, thiab dej nag tuaj yeem nce, thiab nag lossis daus ntawm cov cheeb tsam ntawm cov nplej zom zom tuaj yeem txo.
Chromium yog soluble heev hauv ferrite. CR23C6 yog qhov nyiam tsim nyob rau hauv ferrite yam tsis ua rau Austenite grainaries yuav tsum tau txaus siab hauv chromium; Ferrite kis tau nruab nrab ntawm cov Austenites tuaj yeem tiv thaiv corrosion raws cov ciaj ciam rau sab hauv diffusion.
c. Tswj lub sijhawm nyob hauv lub sijhawm ntsuas qhov ntsuas kub. Kho lub voj voog vuam thilter, shorten lub sijhawm nyob hauv 600 Thaum lub sij hawm multilayer vuam yuav tsum welded li zaum kawg li sai tau.
d. Tom qab vuam, nqa tawm cov kev kho mob daws teeb meem lossis stabilization analing (850 ~ 900 txias rau kev them nqi carbide tawm thiab nrawm nrawm ntawm chromium).
(2) Riam-Sharmed corrosion ntawm Welds. Vim li no, cov kev tiv thaiv hauv qab no:
Vim tias muaj zog diffulus muaj peev xwm ntawm carbon, nws yuav cais tawm hauv ciam teb los tsim cov txheej txheem txias, thaum nb nyob rau hauv lub crystal vim muaj peev xwm tsawg diffusion. Thaum lub weld yog rhuab dua nyob rau hauv cov rhiab heev ntau yam, cov roj carbon ntau yuav ua rau muaj kev kub ntxhov hauv daim ntawv ntawm CR23C6 ntawm lub muaju.
a. Txo cov ntsiab lus carbon. Rau cov hlau stainless muaj stabilizing ntsiab, cov pa roj carbon yuav tsum tsis tshaj 0.06%.
b. Siv cov txheej txheem vuam tsim nyog. Xaiv ib lub suab me me vuam kom sov kom sov kom txo lub sijhawm nyob ntawm qhov ntsuas kub, thiab xyuam xim kom zam cov nyhuv ntawm 'nruab nrab nruab nrab yog ' thaum lub sij hawm vuam.
Thaum ob tog vuam vuam, Weld hauv kev sib cuag nrog cov neeg sib tw corrosive yuav tsum tau welded latter ntawm loj-ntsa welded kav). Yog tias nws tsis tuaj yeem ua tiav, lub vuam vuamification thiab sim kom tsis txhob hloov kho, thiab sim kom tsis txhob muaj kev hloov pauv ntawm thaj chaw uas muaj kev sib cuag dua li ntawm qhov nruab nrab ntawm qhov nruab nrab yog qhov tseem ceeb thiab rhuab.
c. Tom qab kev kho cua sov tom qab Weld. Ua txoj kev daws teeb meem lossis kev kho kom ruaj khov tom qab vuam.
02 kev nyuaj siab corrosion tawg
Cov kev ntsuas hauv qab no tuaj yeem siv los tiv thaiv qhov tshwm sim ntawm kev ntxhov siab corrosion:
a. Xaiv cov npe thiab tsim kho cov weld muaj pes tsawg leeg. High-purity chromium-Nickel Austenitic Stainless Hlau, thiab lwm yam Kev ntxhov siab ua rau nws muaj kev ntxhov siab rau cov qauv ntawm ob theem ntawm stenite thiab Ferrite.
b. Tshem tawm lossis txo qis kev ntxhov siab. Nws tuaj yeem siv rau kev kho mob tom qab-relieving kev tshav kub tshav kub, xws li ib qho Kev Tiv Thaiv Kev Tiv Thaiv Hauv on-line Ntshiab Cua Sov Kho Txog Kev Kho Mob Cua Sov Induction Rauv kev lees paub ntawm cov cua sov induction. Lub ci annaling rauv ntawm Hangao Tech Seko Machinery) ( Nyob rau tib lub sijhawm, nws muaj cua zoo dua, uas tuaj yeem tiv thaiv huab cua rov qab thaum anealing. Lub annealed welded yeeb nkab muaj cov qauv hlau sib txuam nrog cov qauv hlau thiab kev sib tshuam ua kom me dua. Ib qho ntxiv, cov qauv siv tshuab xws li Polishing, Hlais Peening thiab Rauj kuj tseem tuaj yeem txo cov kev ntxhov siab saum npoo.
c. Tus qauv tsim qauv tsim qauv. Kom tsis txhob muaj kev ntxhov siab loj.
