Nyob rau hauv pas vuam, kev taw qhia uas koj tsiv lub electrode {{0} - Begrabs Weld Zoo, Arc Stability, thiab nkag mus. Thaum tsis muaj ib tug - loj}}}}}}}}}}}.
Qhov "rub" txoj kev: ib qho staple rau feem ntau cov haujlwm vuam vuam
Lub vijtsam rub, feem ntau hu ua "rub" txoj kev, koom nrog kev txav ntawm cov kev taw qhia uas rub nws ntawm lub nkoj weld thaum tswj hwm lub cev khov kho. Qhov no yog cov txheej txheem pom zoo tshaj plaws rau cov pas vuam, thiab rau qhov laj thawj.
Thaum rub, lub electrode co txheej melts tusyees ua ntej ntawm weld pas dej uas thaiv cov hlau los ntawm cov hlau los ntawm cov pa hluav taws xob hauv qab (zoo li oxygen thiab nitrogen). Qhov no txo qhov kev pheej hmoo ntawm porosity, kab nrib pleb, lossis nkig hlau. Lub ARC nyob qis qis rau lub hauv paus ntawm cov hlau, txhawb kom tob tob- ib qho tseem ceeb lossis tsim cov qauv tuab lossis tsim cov qauv ntaub ntawv muaj zog.
Rub kuj tseem muaj kev tswj hwm zoo dua ntawm Weld hlaws duab. Los ntawm kev kho cov kev mus ncig ua si nrawm thiab hluav taws xob lub kaum ntse ntse (feem ntau 5 txog 15 degrees los ntawm ntsug), cov neeg muab tshuaj tua kab tuaj yeem tsim xwm yeem, tiaj tus, lossis me ntsis convex hlaws dai. Cov qauv no ua haujlwm tau zoo nrog cov hluav taws xob feem ntau, suav nrog cov khoom siv xeb) thiab 6011 (siv rau kev xaiv ntau yam), kho ua haujlwm, thiab ua haujlwm.
Lub "Push" Txoj Kev: Tsawg tsawg rau cov xwm txheej tshwj xeeb
Thawb cov electrode - Tsiv nws mus rau Weld Pas {}}}} muaj cov ntawv thov me me tab sis feem ntau tsawg dua rau cov qauv vuam. Hauv txoj kev no, hluav taws xob ua rau arc, thiab flux txheej melts tom pas dej. Thaum qhov no tuaj yeem tsim cov hlaws nyom nrog tsawg dua nkag mus, nws yuav tawm ntawm cov hlau molten rau cua kom ntev dua, nce kev pheej hmoo ua paug.
Kev thawb qee zaum siv rau cov khoom siv nyias, qhov chaw nkag mus ntawm kev rub tawm ntawm kev rub tawm tuaj yeem hlawv cov hlau. Nws tseem tuaj yeem pab tau thaum ua haujlwm nrog cov electrodes uas ua rau cov khoom siv shag loj, raws li cov lus tsa suab rau pem hauv ntej yuav txo tau cov neeg tua hluav taws xob hauv Weld. Txawm li cas los xij, qhov no yuav tsum muaj qhov tseeb tswj: thawb lub kaum ntse ntse heev lossis ntawm lub kaum ntse ntse heev tuaj yeem ua rau arc mus rau arc mus rau arc los ua kom muaj kev sib tw ua tsis tiav lossis tsis tiav fusion.
Novice Welders yuav pom kev thawb nyuaj rau tus tswv, raws li nws yooj yim dua kom poob arc stability lossis tsim lub ntsej muag. Nws tsis tshua pom zoo rau kev tseem ceeb rau cov qauv vends, xws li cov neeg hauv cov qauv steel lossis siab siab, qhov chaw nkag mus thiab tsis huv yog tsis yog {sib tham.
Key yam los xaiv ntawm thawb thiab rub
Hom electrodode: Feem ntau Electrodes (7018, 6013, 7014) ua tau zoo tshaj plaws nrog rub tawm. Cov hluav taws xob tsim los rau qhov nkag mus tob lossis cov khoom siv nyias nyias yuav zam kev thawb, tab sis qhov kev zam no, tsis yog cov cai.
Cov Khoom Thickness: Rub kom cov ntaub ntawv tuab (1/4 nti lossis ntau dua) kom ntseeg tau tob tob. Thawb kev ceev faj rau cov hlau nyias nyias (16 ntsuas cua lossis thinner) kom tsis txhob hlawv - los ntawm.
Weld txoj hauj lwm: rub tawm yog ntau dua txhim khu kev qha nyob rau hauv txhua txoj haujlwm - ca}, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug, ntsug. Thawb hauv cov vuam ntsug lossis siv nyiaj ntau dua yuav ua rau muaj kev pheej hmoo ntawm kev ua kom poob rau hauv pas dej, tua cov weld.
Qeb kev txawj ntse: Cov pib muaj txiaj ntsig los ntawm kev pib nrog rub tawm. Nws cov xwm txheej ruaj khov thiab zam txim rau kev tsim kev ntseeg siab, thaum thawb cov kev xav tau finer tswj dua arc ntev thiab ceev.
Thaum twg yuav kho: adapting rau txoj haujlwm
Txawm hais tias muaj cov lus qhia dav dav, cov tshuaj ntsuab tau yoog raws li tiag- lub sij hawm tawm tswv yim. Piv txwv li, yog tias tus rub weld qhia cov cim qhia undercut (ib qho zawj raws cov hlaws dai), txo qis dua lub tsev kawm ntawv tsheb npav tuaj yeem kho nws. Yog tias kev thawb tawm yog qhov tsim nyog rau cov hlau nyias nyias, ua kom lub arc luv thiab taug kev nrawm nrawm tau minimizes flaws.
Hauv cov ntsiab lus, rub tawm yog qhov kev xaiv ua neej ntawd rau feem ntau welding cov haujlwm weldings- nws ntseeg lub pas dej weld, thiab ua haujlwm nrog feem ntau electrodes. Thawb tau siv tsawg tsawg, xws li cov ntaub ntawv nyias nyias lossis cov slag- cov hluav taws xob hnyav, tab sis yuav tsum muaj qhov tseeb. Los ntawm kev sib txuam cov txheej txheem rau cov phiaj xwm kev xav tau, cov tsiaj ua haujlwm tuaj yeem ua tiav cov txiaj ntsig muaj zog, zoo ib yam nkaus.
