Resistance vuam electrodes haum rau koj daim ntawv thov

Hauv peb cov ntawv tshaj tawm ntawm kev siv vuam electrodes peb tau txais qee cov lus nug ntawm ob lub ntsiab lus tseem ceeb:

Heterogeneous hlau rau high conductivity electrodes thiab tsawg conductivity workpieces thiab vice versa

Kev sib txhuam nplawm tau ua tiav thaum cov electrodes tau tsim nyob rau hauv lub bracket

Weld dissimilar hlau

Ua ntej, qee txoj kev tshiab zoo ntawm vuam sib txawv hlau tau raug tshawb nrhiav. Tab sis peb cov kev txawj ntse yog nyob rau saum toj" vice versa" - Thaum welding ib tug high conductivity workpiece siv ib tug tsawg conductivity electrode. Qhov no tsis yog tiag tiag txog welding dissimilar hlau.

Txawm li cas los xij, yog tias koj xav tau cov hlau sib txawv (xws li hlau rau txhuas), peb xav kom koj xav txog kev sib nqus pulse vuam lossis hloov hlau txias. Cov tom kawg zoo ib yam li txoj kev xav rau arc vuam, tab sis nws tau txais txiaj ntsig (raws li ua ntau yam thev naus laus zis) los ntawm kev nce qib tseem ceeb hauv kev tswj hwm hauv xeev. Nws' qhov tseem ceeb yog lub voj voog nrawm ntawm" kub thiab txias, kub thiab txias." Thaum kuaj pom ib qho arc, cov xaim thim rov qab, cov te tam sim no, thiab cov tee dej. Lub voj voog rov ua dua mus txog 90 zaug ib pliag.

Peb pom zoo kom koj mus ntsib cov neeg uas ua rau cov cua sov no, tsis tshua muaj tam sim no txias hlau hloov tshuab uas muaj lwm yam zoo, xws li tshaj tawm tshem tawm spatter. Nyob rau lwm qhov kawg ntawm cov hluav taws xob spectrum, sib nqus pulse welding siv cov hlau nplaum loj tab sis ib ntus sib nqus pulses uas tau tshaj tawm tias ntau dua 1 lab amperes thiab kawg 100 milliseconds. Qhov kev ua haujlwm txias txias txias no tuaj yeem koom nrog ntau qhov sib txawv zoo dua li cov khoom siv hlau inert roj vuam, thiab yuav tsum muaj zog tsawg dua kom ua tiav cov txiaj ntsig zoo.

Cov tuam txhab uas siv cov hlau nplaum sib nqus vuam qhia tias lawv tsis tuaj yeem koom nrog cov hlau sib txawv, tab sis kuj yog hlau rau qee yam nonmetals, xws li cov khoom sib xyaw, cov roj hmab thiab cov polymers. Tau kawg, peb tsis muaj qhov yuav tsum tau ua rau peb cov khoom siv hluav taws xob tsis zoo refractory hlau electrodes!

Kev sib txhuam stirring txheej txheem

Peb daim ntawv qhia txog kev sib txuas tsis raug cai ua rau qee cov lus nug txog seb peb puas siv cov kev sib txhuam nplawm kom ua tiav cov txiaj ntsig. Cov lus teb tsis yog, peb txoj kev tsim khoom tau ruaj khov hauv sintering thiab txo txoj kev, txawm hais tias peb paub yuav ua li cas koom nrog cov khoom siv hluav taws xob los ntawm kev sib txhuam do vuam, thiab qee qhov ntawm peb cov khoom siv hluav taws xob loj dua yog tsim los siv txoj kev no.

Rau cov neeg tsis paub txog kev sib txhuam do vuam, nws siv lub cuab yeej tig los nias tawm tsam ob lub hlau sib txuas, thiab cov cua sov uas tsim los ntawm kev sib txhuam coj cov hlau mus rau lub xeev plasticized. Raws li lub npe qhia, stirring yuav siv qhov chaw, nqa hlau ua ke thiab tsim mechanical bonds. Txawm li cas los xij, nws tsuas yog ib daim ntawv cog lus xwb vim kev sib txhuam vuam tsis yaj.

Piv nrog rau cov arc vuam tsoos, kev sib txhuam vuam muaj qhov zoo ntawm kev tshem tawm ntau qhov kev sib tw ntawm kev ua tus kws tshaj lij arc vuam, xws li kev tswj cov arc qhov khoob, qhov hluav taws xob thiab amperes, ntau tus nqi pub, thiab ntau yam roj. Txij li thaum peb ua peb tus kheej kev sib txhuam welding los tsim cov electrodes, lub ntsiab drawback - nws' tsis yog ib tug txheej txheem heev haum rau kev sib txuas cov qauv loj ntawm ib tug sib dhos kab - tsis' tsis cuam tshuam rau peb.

Txawm li cas los xij, yog tias koj ntsib teeb meem nrog rau hauv-situ welding, koj yuav xav xav txog kev kawm ib qho tshiab ntawm kev ua ntej hu ua kev sib txhuam me ntsis vuam. Cov txheej txheem tshiab no cia li thawb cov kev nkag siab ib txwm muaj ntawm kev sib txhuam vuam los ntawm kev siv cov txheej txheem nruab nrab ntawm cov hlau thiab cov cuab yeej ua haujlwm siab. Brigham Young University' s Friction Stirring Research Laboratory, Oak Ridge National Laboratory thiab lwm tus neeg koom tes thiab pej xeem yog cov kws tshawb fawb ua haujlwm ntawm thev naus laus zis.

Thov hu rau peb ntawm zhang@pride-cnc.com