Thaum nws los rau vuam nrog 7018 pas nrig, ib qho ntawm cov lus nug uas nquag yog siv lwm txoj (AC) lossis ncaj qha tam sim no (DC). Cov lus teb yog nyob ntawm hom ntawm 7018 pas nrig, thiab cov khoom siv vuam muaj, thiab qhov ua tau zoo ntawm Weld. Feem ntau, DC yog qhov kev xaiv uas nyiam tshaj 7018 pas nrig, tab sis AC tuaj yeem siv rau hauv cov xwm txheej tshwj xeeb nrog kev txwv.
7018 cov pas nrig tshwj xeeb tsim rau kev ncaj qha tam sim no (DC) vuam, thiab qhov no yog tus qauv xyaum hauv feem ntau muaj thiab kev tshaj lij. DC muaj ob peb lub ntsiab lus tseem ceeb uas tau ua kom haum nrog cov khoom ntawm 7018 pas nrig. Ua ntej, DC muab cov arc ruaj khov dua. Cov kev ntws ib puag ncig tam sim no hauv ib qho kev coj ua kom ntseeg tau tias lub arc tseem nyob thoob plaws hauv vuam cov txheej txheem, uas yog qhov tseem ceeb rau 7018 pas nrig. Lub arc ruaj khov ua haujlwm pab tswj hwm kev tsim nyog ntawm tus pas nrig thiab cov hlau hauv paus, txo qhov kev pheej hmoo ntawm qhov tsis xws luag thiab ua tsis tiav.
Tsis pub dhau DC Chaw, ncaj qha tam sim no thim rov qab polarity (DCR) yog cov kev teeb tsa pom zoo rau 7018 pas nrig. Nyob rau hauv DCRP, lub electrode (7018 pas nrig) tau txuas nrog qhov zoo ntawm cov versder, thiab cov hlau hauv paus txuas nrog lub davhlau ya nyob twg. Qhov no polarity pab kev nkag mus rau hauv Weld kom muaj zog nrog lub hauv paus hlau tsis zoo, tshwj xeeb tshaj yog nyob rau hauv cov ntawv sau tseem ceeb xws li cov qauv hlau vuam. Tsis tas li ntawd, DCRP pab qhov tsawg - hydrogen txheej ntawm 7018 pas dej ua haujlwm zoo. Cov txheej txheej yog tsim los txo cov hydrogen hauv chav weld, thiab DCRP txo cov kev pheej hmoo ntawm cov huab cua, txo qis kev pheej hmoo ntawm hydrogen {}}} ua rau cov kab nrib pleb.
Thaum DC yog qhov kev xaiv uas nyiam dua, qee qhov 7018 tau siv nrog lwm tus (AC), tab sis qhov no tsis yog tus qauv. AC {- Nyob rau 7018 cov pas nrig tshwj xeeb tsim nrog kev hloov kho rau lawv cov txheej txheem los tswj cov arc nyob rau hauv lwm tam sim no. Cov pas nrig no feem ntau sau npe tias yog "AC / DC 7018" kom paub qhov txawv lawv ntawm tus qauv DC {}}} tsuas yog 70,8. Txawm li cas los xij, txawm nrog cov pas nrig tshwj xeeb, AC vuam muaj cov kev txwv piv rau DC.
Ac vuam nrog 7018 cov pas nrig feem ntau ua rau muaj lub arc tsawg dua li DC. Kev hloov pauv tam sim no tsis tu ncua, uas tuaj yeem ua rau arc rau flicker lossis hloov pauv hauv kev siv. Qhov kev tsis txaus ntseeg no yuav nce qhov kev pheej hmoo ntawm lub ntsej muag, tsis xwm yeem Weld hlaws, thiab muab cov teeb meem {}} teeb meem uas muaj teeb meem tsawg dua nrog DC. Ib qho ntxiv, AC yuav tsis muab tib theem ntawm kev nkag mus ua DC, uas tuaj yeem yog teeb meem thaum vuam cov ntaub ntawv siv lossis thaum muaj zog fusion. Rau cov laj thawj no, AC feem ntau tsuas yog siv thaum DC cov khoom siv tsis muaj, thiab txawm tias yog txwv tsis pub siv qhov tsis xws luag yog qhov ntxiv.
Lwm qhov los txiav txim siab yog qhov cuam tshuam rau WELD zoo. DC vuam nrog 7018 cov pas nrig tsim cov khoom siv txuas ntxiv nrog cov khoom siv zoo dua nrog cov khoom siv. Lub arc ruaj khov arc thiab txhim kho kev nkag mus rau welds nrog lub zog siab dua thiab muaj zog, uas yog cov hlab ntsha nyiam lossis cov tshuab siab hnyav. AC vuam, ntawm qhov tod tes, tej zaum yuav tshwm sim hauv Welds uas xav ntau tshaj li porosity, tshwj xeeb tshaj yog tias ARC tsis ruaj khov. Porosity tsis muaj zog tiv thaiv weld thiab ua rau nws muaj kev cuam tshuam ntau rau kev xeb thaum lub sijhawm.
Nws tseem yog ib qho tseem ceeb kom nco ntsoov tias feem ntau txheem 7018 pas nrig (tsis yog sau npe rau AC / DC) tsis haum rau AC VUAM TXHUA. Sim siv DC -}} Tsuas yog 70,) tsuas yog AN yuav ua rau muaj kev tsis txaus ntseeg, thiab muaj weld tsis zoo. Qhov no tuaj yeem ua rau cov ntaub ntawv khib nyiab, ua haujlwm ua haujlwm, thiab muaj peev xwm kev nyab xeeb kev nyab xeeb hauv cov ntawv thov kev nyab xeeb.
Hauv cov ntsiab lus, 7018 cov pas nrig tau welded zoo tshaj plaws welded nrog DC, ncaj qha ncaj qha tam sim no thim rov qab polarity (DCR). DC muab cov arc ruaj khov, thiab kev ua tau zoo tshaj plaws ntawm cov qis {} hydrogen txheej, ua kom siab zoo} zoo welds. AC yuav siv tau nrog tshwj xeeb AC / dC 7018 pas nrig, tab sis nws yog txuam nrog arc qhov tsis txaus ntseeg, txo tus mob nkag mus, thiab muaj kev pheej hmoo siab ntawm qhov tsis xws luag. Rau feem ntau vuam cov phiaj xwm {{}}}} {{{{} dc yog qhov kev xaiv meej rau 7018 pas nrig.
