4J29 alloy tseem hu ua Kovar alloy.Lub alloy muaj ib tug linear expansion coefficient zoo ib yam li cov borosilicate nyuaj iav ntawm 20 ~ 450 ℃, ib tug siab Curie point thiab zoo tsis kub microstructure stability.Cov oxide zaj duab xis ntawm cov hlau yog ntom thiab tuaj yeem nkag tau zoo los ntawm iav.Thiab tsis cuam tshuam nrog mercury, haum rau siv nyob rau hauv lub ntsuas uas muaj mercury tawm.Nws yog lub ntsiab sealing cov khoom siv ntawm lub tshuab nqus tsev vacuum.Nws yog siv los ua Fe-Ni-Co alloy sawb, bar, phaj thiab yeeb nkab nrog cov iav nyuaj / ceramic txuam sealing, feem ntau yog siv hauv tshuab nqus tsev, hluav taws xob hluav taws xob thiab lwm yam lag luam.
4J29 Daim ntawv thov txheej txheem cej luam thiab cov cai tshwj xeeb
Cov hlau yog ib yam Fe-Ni-Co nyuaj iav sealing alloy feem ntau siv nyob rau hauv lub ntiaj teb no.Nws tau siv los ntawm aviation Hoobkas tau ntev thiab nws cov kev ua tau zoo yog ruaj khov.Nws yog tsuas yog siv rau lub iav sealing ntawm lub tshuab nqus tsev twj xws li emission tube, oscillation tube, ignition tube, magnetron, transistor, sealing plug, relay, integrated circuit lead line, chassis, plhaub, bracket, etc. expansion coefficient ntawm cov iav xaiv thiab cov hlau yuav tsum sib phim.Qhov ntsuas kub tsis tshua muaj kev ruaj ntseg yog nruj me ntsis ntsuas raws li kev siv kub.Kev kho cua sov kom tsim nyog yuav tsum tau ua nyob rau hauv cov txheej txheem ua kom ntseeg tau tias cov khoom muaj kev sib sib zog nqus zoo.Thaum siv cov khoom siv forging, nws cov huab cua nruj yuav tsum tau xyuas kom nruj.
Covar alloy vim yog cov ntsiab lus cobalt, cov khoom lag luam kuj hnav-resistant.
Nws tuaj yeem raug kaw yooj yim nrog molybdenum pawg iav, thiab qhov dav dav ntawm workpiece yuav tsum tau plating kub.
4J29 Formability:
Cov hlau muaj qhov txias thiab kub ua haujlwm zoo, thiab tuaj yeem ua rau ntau yam duab ntawm qhov chaw.Txawm li cas los xij, cua sov hauv huab cua uas muaj sulfur yuav tsum zam.Nyob rau hauv txias dov, thaum qhov txias txias ntawm lub sawb yog ntau tshaj 70%, cov yas anisotropy yuav induced tom qab annealing.Thaum qhov txias txias yog nyob rau hauv thaj tsam ntawm 10% ~ 15%, cov nplej yuav loj hlob sai tom qab annealing, thiab cov yas anisotropy ntawm cov hlau kuj yuav raug tsim.Cov yas anisotropy yog qhov tsawg kawg nkaus thaum kawg strain tus nqi yog 60% ~ 65% thiab cov nplej loj yog 7 ~ 8.5.
4J29 Vuam khoom:
Cov hlau tuaj yeem welded nrog tooj liab, hlau, npib tsib xee thiab lwm yam hlau los ntawm kev sib tsoo, fusion vuam, tsis kam vuam, thiab lwm yam. Thaum cov ntsiab lus zirconium nyob rau hauv cov hlau yog ntau dua 0.06%, nws yuav cuam tshuam qhov vuam zoo ntawm cov phaj thiab txawm ua lub weld tawg.Ua ntej lub alloy yog kaw nrog iav, nws yuav tsum tau muab ntxuav, ua raws li los ntawm kub ntub hydrogen kev kho mob thiab pre-oxidation kev kho mob.
4J29 txheej txheem kho deg: Kev kho deg tuaj yeem ua sandblasting, polishing, pickling.
Tom qab cov khoom raug kaw nrog lub khob, cov oxide zaj duab xis tsim tawm thaum lub sijhawm sib khi yuav tsum tau muab tshem tawm kom yooj yim vuam.Cov khoom tuaj yeem ua kom sov txog li 70 ℃ hauv cov tshuaj aqueous ntawm 10% hydrochloric acid + 10% nitric acid, thiab pickled rau 2 ~ 5min.
Cov hlau muaj kev ua haujlwm zoo electroplating, thiab qhov chaw tuaj yeem yog kub-plated, nyiaj, npib tsib xee, chromium thiab lwm yam hlau.Txhawm rau kom yooj yim vuam lossis kub nias sib txuas ntawm qhov chaw, nws feem ntau plated nrog tooj liab, npib tsib xee, kub thiab tin.Txhawm rau txhim kho cov khoom siv hluav taws xob ntau zaus tam sim no thiab txo qhov kev tiv thaiv tiv thaiv kom ntseeg tau cov yam ntxwv ntawm cathode emission, kub thiab nyiaj feem ntau plated.Txhawm rau txhim kho corrosion kuj ntawm cov cuab yeej, nickel lossis kub tuaj yeem plated.
4J29 Txiav thiab sib tsoo kev ua haujlwm:
Cov yam ntxwv ntawm cov hlau txiav yog zoo ib yam li cov hlau tsis muaj austenitic.Kev siv cov hlau ceev los yog cov cuab yeej carbide, kev ua haujlwm qis.Coolant tuaj yeem siv thaum txiav.Cov alloy muaj kev sib tsoo zoo.
4J29 Cov ntsiab lus tseem ceeb:
4J29 seamless yeeb nkab, 4J29 steel phaj, 4J29 round steel, 4J29 forgings, 4J29 flange, 4J29 nplhaib, 4J29 welded yeeb nkab, 4J29 steel band, 4J29 ncaj bar, 4J29 hlau thiab txuam welding khoom, ncuav mog qab zib 2 steel, 4J29 steel phaj bar, 4J29 loj taub hau, 4J29 luj tshib, 4J29 tee, 4J29 4J29 qhov chaw, 4J29 bolts thiab ceev, 4J29 fasteners, thiab lwm yam.
Post lub sij hawm: Nov-22-2023