Cov pa roj carbon electrodes yog siv rau kev txiav cov hlau. Tsis tas li ntawd, lawv tau siv los txuas cov hlau, tshem tawm qhov tsis xws ntawm cov ntawv hlau, txiav rivets thiab ua lwm yam haujlwm. Cov pa roj carbon electrodes yog tsim los ntawm electrotechnical amorphous carbon.
Cov khoom tiav tiav muaj daim ntawv-dub nto thiab yog cov pas nrig puag ncig, qhov hla ntawm qhov sib txawv ntawm 6 mus rau 18 millimeters. Tus qauv pas nrig ntev yog 25-70cm.
Txhawm rau txiav ntau hom hlau, carbon electrodes yog sharpened ntawm ntau lub ces kaum. Yog li, rau kev ua cov hlau ferrous, ib qho kawg ntawm tus pas nrig yog sharpened ntawm lub kaum sab xis ntawm 65 degrees. Txhawm rau ua vuam cov ntaub ntawv los ntawm cov hlau tsis muaj hlau, suav nrog hardfacing, cov electrode yog sharpened ntawm lub kaum sab xis ntawm 30 degrees.
Nyob rau hauv cov txheej txheem ntawm kev tsim electrodes, thev naus laus zis ntawm dextrusion lossis molding thiab kev kho cua sov ntawm cov khoom siv yog siv. Cov khoom yog raws li coke lossis thee, thiab kuj ntxivntau yam binders (tar, resin, thiab lwm yam). Qee zaum, cov hmoov hlau lossis cov shavings suav nrog cov pa roj carbon electrode.
Cov khoom siv tau siv ntau yam kev lag luam. Lawv yog siv los txiav cov ntaub ntawv hlau, ua qhov hauv cov hlau, cov pa roj carbon thiab cov hlau tsis tshua muaj hlau. Tsis tas li ntawd, lawv tau siv los txiav tooj liab, stainless lossis hlau me me, nrog rau lwm cov alloys siv hauv kev tsim cov qauv hlau, hauv tshuab engineering, nkoj tsim, thiab kev lag luam steel.
Carbon electrode vuam tau ua pov thawj nws tus kheej kom ua tau zoo heev. Nws muaj ntau yam zoo dua lwm hom kev txiav. Cov pa roj carbon welding siv cov pa roj carbon, compressed cua, lossis hluav taws xob tam sim no los ua cov hlau txiav thiab tshem tawm zoo heev. Vuam tej hauj lwm yog ua los ntawm compressed cua los yog ib tug hluav taws xob arc, uas tsis tsuas yog melts cov hlau, tab sis kuj nws tus kheej-tshem tawm nrog ib tug huab cua dav hlau.
Txoj kev vuam hlau khoom no muaj nws tus yam ntxwv. Piv txwv li, txhua txoj haujlwm tuaj yeem ua tiav nrog cov tam sim no ncaj qha, thiab qhov ntev ntawm lub arc yuav tsum nyob rau hauv thaj tsam ntawm 6-15 millimeters.
Nyob rau hauv cov ntaub ntawv no, lub arc yog ignited heev yooj yim thiab muaj txaus stability. Txawm li cas los xij, yog tias rov qab polarity tshwm sim, lub arc yuav poob kev ruaj ntseg, thiab cov electrode yuav hlawv thiab evaporate.
Ua thaum vuam cov ntaub ntawv nrog carbon electrodeslub arc yog rhiab heev rau huab cua tej yam kev mob (los nag, magnetic blast, gas flows). Tsis tas li ntawd, thaum ua haujlwm welding qhov twg siv cov pa roj carbon electrodes, qhov kev ua haujlwm qis dua tau muab piv rau kev siv cov pa roj carbon monoxide. Txawm li cas los xij, tus nqi ntawm carbon rods tsis tuaj yeem kwv yees. Lawv tso cai rau koj los txuas cov hlau tsis-ferrous, cov ntaub ntawv nyias, ua cov hluav taws xob tacks thiab cov alloys nyuaj ntawm lub zog tam sim no ntawm 1 kA.
