cam khwb cia hlau yog paub tias yog cov hlau thiab carbon. Hauv qhov no, cov ntsiab lus ntawm cov tom kawg yuav tsum tshaj li ob feem pua. Nyob ntawm lub xeev uas cov pa roj carbon nyob rau hauv cov alloy, grey thiab dawb hom cam khwb cia hlau yog txawv. Nyob rau hauv thawj daim ntawv, carbon yog nyob rau hauv daim ntawv ntawm graphite, nyob rau hauv ib tug dawb lub xeev, uas ua rau nws zoo machinability. Txij li thaum lub caij no yog nyob rau hauv ib tug khi lub xeev nyob rau hauv dawb cam khwb cia hlau, nws yog yuav luag tsis yooj yim sua rau welded nws. Cov khoom yog lub teeb xim thaum tawg.
Yuav ua li cas cam khwb cia hlau welded? Pib nrog, cov khoom siv no tsis yog qhov tsim nyog tshaj plaws rau hom kev ua haujlwm no. Thaum vuam, nws yog deformed thiab tawg yooj yim tsim nyob rau hauv nws. Qhov no yog vim muaj cov qauv tshwj xeeb ntawm cov pa roj carbon monoxide hauv nws cov pob txha. Oiled cam khwb cia hlau, nrog rau cov uas tau raug mus rau ntau yam nruj ib puag ncig, tsis tuaj yeem welded. Txawm li cas los xij, hom nrog cov qauv zoo-grained thiab lub teeb grey xim yog qhov zoo rau qhov no. Vuam cam khwb cia hlau muaj cov kev mob tshwm sim hauv qab no: bleaching thiab, vim li ntawd, cov tsos ntawm ib txheej ntawm cov hlau cam khwb cia hlau dawb ntawm qhov chaw vuam, uas tsis tuaj yeem ua tiav txhua txoj kev; raws li twb tau hais lawm, tsim cov kab nrib pleb; nce nyob rau hauv voltage nyob rau hauv lub vuam cheeb tsam; weld pas hlauua ntxeem tau vim qhov hlawv ntawm carbon nrog rau ib txhij tsim ntawm carbon dioxide. Yog li, cov txheej txheem no ua rau muaj kev nyuaj ntau heev. Txawm li cas los xij, welding ntawm cam khwb cia hlau yog siv dav heev. Nws muaj peb txoj hauv kev tseem ceeb: txias, semi-kub thiab kub.
Thawj yog qhov tsis muaj preheating. Txias vuam ntawm cam khwb cia hlau yog nqa tawm nrog hlau, cam khwb cia hlau thiab electrodes ua los ntawm non-ferrous hlau thiab alloys. Qhov tseem ceeb tshaj plaws yog kom tsis txhob muaj cua sov muaj zog nyob rau hauv qhov chaw muaj cua sov. Ua li no, thaum siv steel electrodes, thawj txheej yog thov nrog electrodes ntawm me me txoj kab uas hla nrog ib tug tsawg carbon ntsiab lus, ib tug nyias txheej. Lub zog tam sim no nyob rau theem ntawm kev ua haujlwm yuav tsum tsis pub tshaj 90 amperes. Cov khaubncaws sab nraud povtseg yog siv nrog cov electrodes ntawm txoj kab uas hla loj dua, cov txheej tuaj yeem yog nyias lossis tuab.
Ib txoj cai tseem ceeb yog cov hlau seams yuav tsum tau siv nrog luv luv so kom qhov kub ntawm qhov kub ntawm qhov kub tsis tshaj rau caum degrees.
Yog tias vuam yuav tsum tau ua ntawm cov khoom tseem ceeb, cov khoom siv tshwj xeeb tuaj yeem siv tau. Cov no yog cov hu ua screws - tshwj xeeb studs uas yog ua los ntawm cov hlau me me. Lawv lub hom phiaj yog los txuas cov hlau welded nrog cam khwb cia hlau. Vuam yog ua ua ntej nyob ib ncig ntawm lawv, thiab ces nyob rau hauv lub niaj zaus yam. Thaum nws yog tsim nyog los welding tej yam tsis xws luag casting, tawg thiab lwm yam tsis muaj zog cov ntsiab lus, electrodes ua los ntawm npib tsib xee-raws li los yog tooj liab-raws li alloys feem ntau siv. Pab txhawbgraphitization, lawv tiv thaiv cov tsos ntawm ib tug dav bleaching cheeb tsam. Vuam cam khwb cia hlau hauv tsev feem ntau yog ua los ntawm txoj kev txias. Hauv qhov no, txhua yam ntawm cov electrodes teev saum toj no tuaj yeem siv tau.
Kub welding ntawm cam khwb cia hlau muaj cua sov lub workpiece ua ntej pib ua hauj lwm nrog nws. Txoj kev no txo cov kev ntxhov siab ntawm cov qauv hlau. Txoj kev kub kub yog ib txoj kev hloov kub. Nws muaj nyob rau hauv hlau graphitization thiab dav dav los yog hauv zos cua sov rau ib tug tej yam kub. Cov txheej txheem no tau siv ntau txoj hauv kev.
Yog tias nws yuav tsum tau welding ib tus neeg ua los ntawm cam khwb cia hlau, ces nyob rau hauv cov ntaub ntawv no ib tug txias welding txoj kev yog siv. Yog tias kev ua haujlwm tau ua tiav ntawm kev lag luam, ntawm kev lag luam, cov txheej txheem kub yog siv.
