Cov yam ntxwv vuam ntawm Anustenitic Stainless hlau: txoj kev ntxhov siab yas thiab kev ntxhov siab thaum lub sij hawm vuam loj heev, tab sis cov tawg txias tsis tshua pom. Tsis muaj kev pab tawv nqaij tawv thiab cov nplej zom ua ke hauv kev sib koom ua ke welded, yog li lub zog tensile ntawm Weld yog siab dua.
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
1. Qhov tsim ntawm chromium carbide txo lub peev xwm ntawm welded pob qij txha 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 qhov xeb ntawm lub rooj vag thiab cov kev ua kom pom tseeb ntawm cov hom phiaj:
a. Txo cov ntsiab lus carbon ntawm lub hauv paus hlau thiab vsds, ntxiv stabilizing ntsiab lus ti, nb thiab lwm cov ntsiab lus rau kev tsim ntawm MC kom tsis txhob tsim ntawm CR23C6.
b. Ua rau weld form 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 cov noob qoob loo tuaj yeem nce, thiab nag lossis daus tuaj yeem txo tau. 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 thermal, shorten lub sijhawm nyob rau hauv lub sij hawm 600 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 annealing (850 ~ 900 txias los ua tus carbides them cia thiab nrawm ntawm chromium).
(2) Riam-Sharped corrosion ntawm welded pob qij txha. Vim li no, cov kev tiv thaiv hauv qab no tuaj yeem ua tau:
Vim tias muaj zog, nws yuav cais cov txheej txheem thaum lub sij hawm txias, thaum nb thiab nb nyob hauv lub crystal vim muaj peev xwm tsawg diffusion. Thaum lub welded sib koom ua ke yog rhuab dua nyob rau hauv cov rhiab npaum li cas, supersaturated carbon yuav precipate nyob rau 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 cov vuam me me ua kom sov kom sov kom sov kom txo lub sijhawm nyob ntawm qhov ntsuas kub thiab xyuam xim, thiab xyuam xim kom tsis txhob muaj qhov kub thiab xyuam xim 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, kev siv Vuam specification thiab cov duab Weld yuav tsum tau hloov kho kom tsis txhob muaj qhov chaw overheated nyob rau hauv kev sib cuag nrog lub nruab nrab ntawm 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.
2. Kev ntxhov siab corrosion tawg
Cov kev ntsuas hauv qab no tuaj yeem siv los tiv thaiv kev ntxhov siab corrosion tawg ntawm kev tshwm sim:
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. Nqa cov txheej txheem cua sov-Weld maj mam muab, thiab siv cov qauv siv tshuab xws li rauj los txo cov kev ntxhov siab ntawm thaj chaw.
c. Tus qauv tsim qauv tsim qauv. Kom tsis txhob muaj kev ntxhov siab loj.
3. Vuam Kub tawg (Crystallization tawg hauv Welds, liquefaction cov kab nrib pleb hauv thaj chaw kub-cuam tshuam rau thaj chaw)
Qhov rhiab heev ntawm thermal tawg feem ntau yog nyob ntawm cov tshuaj lom neeg muaj pes tsawg leeg, koom haum thiab ua haujlwm ntawm cov khoom siv. Ni yog ib qho yooj yim los ua daim ntawv loj me me los yog Eutectic nrog impurities xws li s thiab p. Tus kab ciav hlau thiab silicon yuav txhawb thermal tawg. Weld yog ib qho yooj yim los ua cov qauv siv leadic Qhov no txhawb nqa txoj kev tsim ntawm kev ua yeeb yam tsis tu ncua cov zaj duab xis thiab txhim kho qhov rhiab ntawm thermal tawg. Yog hais tias lub vuam tsis yog uniformly rhuab, nws yog ib qho yooj yim los ua cov kev ntxhov siab loj dua thiab txhawb nqa cov khoom siv vuam kub.
Kev tiv thaiv kev ntsuas:
a. Nruj me ntsis tswj cov ntsiab lus ntawm kev ua phem impurities s thiab p
. Kho cov qauv ntawm weld hlau. Lub dual-theem qauv weld muaj kev tawg ua zoo. Cov theem delta nyob rau hauv weld tuaj yeem kho cov nplej, tshem tawm cov kev ua txhaum ntawm ib qho kev cuam tshuam nrog lub zog ntawm cov khoom sib xyaw thiab ua kom muaj kev sib txuam ntawm cov kua txiv ua kua.
c. Kho lub weld hlau alloy muaj pes tsawg leeg. Cov ntsiab lus kev tsim nyog nce cov ntsiab lus ntawm MN, thiab n nyob rau hauv ib-theem Austenitic steel, thiab tantalum (uas tuaj yeem txo cov ntxig ntawm thermal tawg.
d. Cov kev ntsuas ntsuas. Txo qhov dhau ntawm Molten pas dej txhawm rau tiv thaiv kom tiv thaiv kev tsim cov muaju tuab. Siv cov tswv yim me me kub thiab cov ntoo khaub lig me me ntawm Weld hlaws dai.
Piv txwv li, 25-20 autenitic steel yog nquag rau liquefaction tawg. Nws yog ua tau kom tsis txhob muaj cov ntsiab lus los ntawm cov khoom siv tshuab hluav taws xob, tau txais lub zog kub ua kom sov thiab nce cov cua txias ntawm cov pob qij txha.
4. Mebrittlement ntawm welded sib koom tes
Cov tshav kub-muaj zog hlau yuav tsum ua kom muaj cov plasticity welded los tiv thaiv cov kev kub ntxhov siab; Cov hlau tsawg-kub yog qhov yuav tsum muaj qhov qis qis-kub nyuaj los tiv thaiv qis-kub brittle fracture ntawm welded pob qij txha.
5. Loj vuam distortion
Vim yog tsawg thermal conductivity thiab loj nthuav cov coefficient, vuam deformation yog loj, thiab clamps tuaj yeem siv los tiv thaiv deformation.
Yog tias koj kuj muaj cov teeb meem tau hais los saum toj no, koj tuaj yeem txheeb xyuas qhov tshwm sim los ntawm kev saib cov txheej txheem cov yeeb nkab. Tom qab ntawv coj kev ntsuas ntsuas kom daws tau qhov teeb meem raws li kev sib xws. Ntxiv nrog rau cov ntsiab lus ntawm cov khoom ntawm cov khoom nws tus kheej, cov pwm, cov vuam ntawm cov ntoo yeeb nkab welded, thiab qhov kev cuam tshuam vuam ntawm cov khoom siv yeeb nkab welded Raws li a Cov kws tshaj lij kev lag luam ntawm cov khoom siv Welded Welded Yeeb Nkab , txais tos kom sib txuas lus nrog Hangao Tech txog cov teeb meem welded welded, thiab tos ntsoov yuav ua kom tiav nrog koj.
