Raustainless hlau clad phajwelding, lub hauv paus txheej thiab clad txheej yuav tsum tau welded cais, thiab cov kev hloov txheej yuav tsum tau welded nyob rau hauv lub hlws ris ntawm lub hauv paus txheej thiab clad txheej. Kev vuam yooj yim thiab ntau txheej vuam yog tib yam ntawm vuam, thiab cov txheej txheem kuj paub tab. Kev sib hloov ntawm cov txheej txheem kev hloov pauv belongs rau qhov sib txawv ntawm cov hlau tsis sib xws, thiab nws tseem yog tus yuam sij rau kev vuam ntawm stainless hlau-clad daim hlau. Qhov muaj pes tsawg leeg thiab kev ua haujlwm ntawm lub hauv paus txheej thiab txheej txheej cladding yog qhov sib txawv heev, yog li kev tswj cov vuam ntawm cov txheej txheem hloov pauv yog tus yuam sij kom tau txais cov pob qij txha zoo.
Cov teeb meem tseem ceeb thiab kev daws teeb meem thaum vuam txheej hloov pauv ntawm stainless hlau clad phaj:
(1) Dilution ntawm weld hlau Txij li thaum lub hauv paus carbon hlau tsis muaj alloying ntsiab Cr thiab Ni, nws muaj ib tug dilution nyhuv ntawm cov alloying ntsiab Cr thiab Ni nyob rau hauv lub weld hlau thaum melting, thiaj li hais tias cov ntsiab lus ntawm austenite forming ntsiab Cr thiab Ni nyob rau hauv lub weld Yog tias nws txo qis, cov qauv martensitic hardened yuav raug tsim nyob rau hauv cov hlau weld, thiab cov kab nrib pleb yuav yooj yim tshwm sim, yog li deteriorating qhov zoo ntawm kev sib koom tes.
Kev daws:
Thaum vuam txheej hloov pauv, vuam cov ntaub ntawv uas muaj ntau cov chromium thiab npib tsib xee yuav tsum tau siv, yog li txawm tias nws yog diluted los ntawm lub hauv paus txheej, lawv yuav tsis tsim cov qauv martensitic hardened. Nyob rau tib lub sijhawm, cov txheej txheem vuam tsim nyog thiab cov txheej txheem vuam tau txais yuav los txo qhov tob tob thiab vuam dilution ntawm lub hauv paus sab.
(2) Thaum cov hlau tsis muaj hlau siv los ua cov hlau muab tub lim hauv cov txheej txheem hloov pauv, cov khoom siv ntawm cov pa roj carbon steel thiab cov khoom muab tub lim sib txawv heev. Txij li cov kua hlau ntawm cov pa roj carbon steel sab muaj qhov kub thiab txias tsis zoo, nws tsis tuaj yeem sib xyaw ua ke, yog li qhov loj dua ntawm cov khoom siv carbon steel nyob ze ntawm txoj kab fusion, qhov hnyav dua nws yuav raug diluted. Qhov no ntawm diluted weld hlau yog hu ua Raws li ib qho kev hloov txheej, nws ua martensite ntawm carbon steel thiab stainless hlau welds. Thaum lub cheeb tsam martensite dav, qhov toughness ntawm qhov sib koom ua ke yuav txo qis, thiab brittle tsis ua hauj lwm yuav tshwm sim thaum siv.
Kev daws:
Thaum muaj kev cuam tshuam loj heev, yuav tsum tau siv cov hlau nickel siab.
(3) Cov pa roj carbon steel ntawm lub hauv paus ntawm cov txheej txheej diffusion muaj cov ntsiab lus carbon siab thiab cov ntsiab lus tsis tshua muaj cov ntsiab lus ntawm cov hlau, thaum stainless hlau, ntawm qhov tsis sib xws, ua rau muaj qhov sib txawv ntawm ob sab ntawm fusion kab. Thaum welding clad steel daim hlau, carbon diffuses los ntawm carbon hlau mus rau stainless hlau welds. Raws li qhov tshwm sim, txheej txheej decarburization yog tsim rau ntawm carbon steel sab ntawm fusion kab kom muag muag, thiab txheej txheej carburization yog tsim ntawm stainless hlau weld txheej kom tawv. Cov txheej txheem diffusion nce nrog qhov nce ntawm qhov kub thiab txias thiab lub sijhawm nyob ntawm qhov kub thiab txias.
Kev daws:
Vim muaj qhov sib txawv ntawm cov khoom hlau ntawm ob sab ntawm txoj kab fusion, kev ntxhov siab ntawm kev sib koom ua ke tuaj yeem ua rau muaj kev ntxhov siab thiab txo qhov kub thiab txias zog thiab plasticity ntawm kev sib koom tes. Yog li ntawd, cov txheej txheem diffusion yog qhov tsis muaj zog txuas hauv vuam ntawm stainless hlau clad daim hlau, yog li kev saib xyuas yuav tsum tau them rau cov txheej txheem vuam ntawm cov txheej txheem diffusion.
(4) High-stress lub xeev ntawm welded pob qij txha Vim qhov sib txawv ntawm linear expansion coefficient thiab thermal conductivity ntawm carbon steel thiab stainless hlau, thermal stress yuav tshwm sim nyob rau hauv high welding kub. Nyob rau tib lub sij hawm, thaum lub welded sib koom ua hauj lwm nyob rau hauv alternating kub tej yam kev mob, nws yog ib qho yooj yim los tsim thermal qaug zog tawg.
Kev daws:
Yog li ntawd, nws yog tsis yooj yim sua kom tshem tawm cov kev ntxhov siab welding los ntawm kev kho cua sov tom qab vuam. Lub high-nickel-raws li electrode nrog ib tug linear expansion coefficient ze ntawm cov pa roj carbon steel thiab zoo plasticity tuaj yeem xaiv rau vuam kom lub thermal stress yog concentrated ntawm fusion kab ntawm stainless hlau sab. Los ntawm cov yas deformation ntawm cov hlau tsis muaj steel, txo qhov cuam tshuam ntawm kev ntxhov siab me me thiab thermal qaug zog.
Baoji Taicheng Hlau Co., Ltd, as ahlau compositephajHoobkas, muaj ntau xyoo ntawm kev tsim khoom thiab kev muag khoom hauv kev lag luam, pab cov neeg siv khoom thoob plaws ntiaj teb, txhua yamcustomized stainless hlau ctus tub phajs, txais tos koj yuav khoom!
