In welding, the hot pass is a critical step, typically performed immediately after the root pass in pipe welding or thick-section welding. Nws lub hom phiaj tseem ceeb yog kom rov qab lub hauv paus Pass thiab lub hauv paus sib txawv, porosity, thiab tsis tiav fusion uas yuav ua tsis tiav thaum lub hauv paus dhau. Nws kuj tseem pab kom du tawm cov cag ntoo, tsim cov ntaub ntawv sib txawv, thiab npaj lub hauv paus ruaj khov rau kev sau thiab cap txuas ntxiv. Muab nws lub luag haujlwm, hluav taws xob tau siv rau cov KUB KUB yuav tsum tau ua raws li cov khoom siv uas xav tau kev ua tau zoo, thiab nkag siab txog qhov tseem ceeb ntawm kev ua tiav siab- zoo weld.
Cov KUB KUB yuav tsum muaj lub electrode uas tuaj yeem xa cov lus sov txaus kom rov qab lub hauv paus cag tsis muaj ntau dhau ntawm cov hlau hauv paus. Nws xav tau kev nkag mus zoo kom ncav cuag mus rau hauv lub hauv paus dhau thiab cov khoom siv nyob ib puag ncig, nrog rau cov yam ntxwv arc ruaj khov kom ntseeg tau tias fusion zoo li cas. Ib qho ntxiv, cov electrode yuav tsum ua kom txo qis kev phom sij, ib qho kev txhawj xeeb hauv cov kub uas yog qhov tsim nyog tab sis nyuaj vim yog Weld lub geometry.
Rau feem ntau cov hlau thiab qis {{- }11 eleclots yog dav -}} rau kev xaiv rau cov kub dhau. Cov hluav taws xob no tau muab cais raws li "Cast - Ua kom muaj kev tswj hwm tau sai sai, cia lawv cov kev cob qhia nrawm nrawm nrawm nrawm yog qhov tseem ceeb.
E6010 hluav taws xob yog tsim rau DC Rov qab polarity (DCR) thiab Excel nyob rau hauv kev sib tw sib sib zog nqus, ua rau lawv zoo tagnrho rau kev kub siab lossis oxides los ntawm lub hauv paus pass. Lawv lub peev xwm los tsim lub ntsej muag nqaim, yuam kev tias lub hauv paus cag pab tiv thaiv kom tsis txhob muaj hlau los ntawm sagging hauv verting hauv verture los yog overhead Wels. E6011 hluav taws xob, ntawm qhov tod tes, zoo sib xws hauv kev ua tau tab sis siv tau nrog ob qho tib si rau cov welders ua haujlwm nrog cov khoom siv tsawg. Qhov kev hloov pauv no ua rau E6011 ib qho kev xaiv nrov hauv kev teeb tsa uas AC Whders yuav yog qhov kev xaiv nkaus xwb.
Hauv qee kis, tshwj xeeb rau siab dua - lub zog hlaus lossis thaum cov khoom siv cov khoom ntiag tug yog nyob rau hauv cov khoom siv hluav taws xob yog nyob rau hauv tej zaum yuav siv rau cov kev kub kub. Cov electrode muab lub zog ntau dua (70,000 psi piv rau kev siv xws li siab- siab cov yeeb nkab vuam hauv cov roj thiab roj kev lag luam. Zoo li E6010, nws ua haujlwm ntawm DC rov qab polarity thiab muaj cov khoom tshem tawm zoo tshaj plaws, tseem ceeb rau kom ntseeg tau cov kub dhau los nplooj huv, tsis muaj qhov tseeb.
Thaum xaiv cov electrode rau cov kub dhau, ntau yam yuav tsum tau txiav txim siab. Lub hauv paus khoom siv hauv paus yog thawj: carbon steels thiab tsawg {}}}}}}}}}}}} {} {} {} {} {} { Txoj hauj lwm vuam kuj tseem ceeb tshaj plaws-E6010 / E6011 thiab E7010-G yog cov khoom siv kub thiab kab rov tav tseem muaj txiaj ntsig los ntawm lawv cov peev xwm los ntawm lawv cov peev xwm.
Lwm qhov kev txiav txim siab tseem ceeb yog cov txheej txheem vuam thiab khoom siv. E6010 thiab e7010 {{{6} g xav tau DC lub zog, yog li Welders yuav tsum ua kom lawv cov tshuab tuaj yeem xa cov dc rov qab polarity. E6011, nrog nws AC / DC sib xyaw, yog qhov zoo dua rau cov teeb tsa uas AC Fais fab yog qhov kev xaiv nkaus xwb. Tsis tas li ntawd, cov kub tshaj plaws cia siab rau kev tswj cov tswv yim tshav kub kub-dhau tsawg, thiab tsis xws luag tuaj yeem nyob; Ntau dhau, thiab distortion lossis yws kev loj hlob tuaj yeem tshwm sim. Qhov kev xaiv electrode yuav tsum tau muab lub peev xwm los tswj arc ntev thiab mus ncig ua si, nrog E6011 / E70 / G muab kev ua kom muaj kev kub ntxhov thiab nkag mus.
Hauv cov ntsiab lus, cov kub dhau los xav tau cov hluav taws xob uas sib txuas ua ke sib sib zog nqus, ruaj khov arc kev ua tau, minimal slag, thiab compatibility slag thiab compatibe nrog lub hauv paus hlau thiab vuam. Rau feem ntau cov hlau thiab qis {{{- alllot steel daim ntawv thov, E606 thiab E60 [E6011 rau ACC Teeb thiab E6011 rau AC / DC Versatility. Rau siab dua - muaj zog yuav tsum tau, E7010 {{10} g yog ib txoj kev xaiv tau zoo. Los ntawm kev xaiv txoj cai electrode thiab ua khub nws nrog cov txheej txheem kom zoo rau lub hauv paus thiab cov theem kub ua kom muaj kev tsis xws luag thiab teeb tsa theem rau lub zog, ib qho kev ywj pheej thib kawg weld.
