Raws li cov kev sib txuas ntawm qhov me me mus rau qhov loj, lawv yog: luv luv-circuit hloov, hloov pauv hloov, tshuaj tsuag hloov
1. Kev hloov pauv luv luv
Lub molten droplet ntawm qhov kawg ntawm lub electrode (los yog xaim) yog nyob rau hauv luv luv-circuit contact nrog lub molten pas dej ua ke. Vim muaj zog overheating thiab sib nqus contraction, nws tawg thiab ncaj qha hloov mus rau lub pas dej molten. Qhov no hu ua short-circuit transition.
Kev hloov pauv luv luv tuaj yeem ua tiav qhov kev hloov pauv ntawm cov hlau txuas ruaj khov thiab cov txheej txheem vuam ruaj khov nyob rau hauv qis zog arc (tsis tshua muaj tam sim no, qis arc voltage). Yog li ntawd, nws yog tsim nyog rau welding nyias daim hlau los yog welding nrog tsawg tshav kub input.
Cov tsis ua tiav yog: vuam tam sim no tsawg dua 200A
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2. Kev hloov pauv (granular transition)
Thaum lub arc ntev tshaj li ib qho nqi, cov molten droplet tuaj yeem khaws cia ntawm qhov kawg ntawm cov electrode (los yog xaim) kom loj hlob dawb los ntawm qhov kev txiav txim ntawm qhov nro. Thaum lub zog uas ua rau lub molten droplet poob (xws li lub ntiajteb txawj nqus, electromagnetic quab yuam, thiab lwm yam) ntau tshaj qhov nro ntawm qhov chaw, lub molten droplet yuav tawm ntawm electrode (los yog hlau) thiab hloov mus rau hauv lub pas dej ua ke tsis muaj luv luv, raws li qhia hauv daim duab 4.
Daim ntawv hloov pauv hloov pauv tuaj yeem muab faib ua ntxhib hloov pauv hloov pauv thiab hloov pauv hloov pauv zoo. Coarse droplet hloov yog daim ntawv uas cov molten droplet dawb hloov mus rau molten pas dej ua ke nyob rau hauv daim ntawv ntawm ntxhib hais. Txij li cov kev hloov pauv ntawm cov dej ntxhib muaj qhov tawg loj thiab tsis ruaj khov, nws tsis tsim nyog rau kev ua haujlwm vuam.
Thaum lub sij hawm welding txheej txheem, qhov loj ntawm cov molten droplet muaj feem xyuam rau lub vuam tam sim no, muaj pes tsawg leeg ntawm vuam hlau, thiab muaj pes tsawg leeg ntawm txheej.
Cov xwm txheej rau kev paub yog: vuam tam sim no 200-300A (100% CO2), argon-nplua nuj sib xyaw roj 200-280A.
3 Txau hloov pauv (tseem hu ua dav hlau hloov pauv)
Daim ntawv uas cov molten droplets nyob rau hauv daim ntawv ntawm cov khoom zoo thiab sai dhau los ntawm qhov chaw arc mus rau lub pas dej molten hauv lub xeev tshuaj tsuag yog hu ua kev hloov pauv. Qhov loj ntawm cov molten droplet txo nrog qhov nce ntawm qhov vuam tam sim no.
Thaum lub arc ntev yog tas li, thaum lub vuam tam sim no nce mus rau ib qho nqi, cov tshuaj tsuag hloov lub xeev tshwm. Nws yuav tsum tau hais txog ntawm no tias ntxiv rau qee qhov tam sim no ceev, qee qhov ntev arc (arc voltage) yuav tsum tau tsim kom muaj kev hloov pauv. Yog tias qhov hluav taws xob arc tsawg dhau (qhov ntev arc luv dhau), txawm tias tus nqi tam sim no loj npaum li cas, nws tsis tuaj yeem tsim kev hloov pauv.
Cov yam ntxwv ntawm kev hloov pauv yog cov dej zoo molten, kev hloov pauv siab zaus, cov molten droplets txav mus rau lub pas dej molten ntawm kev kub ceev raws axial kev taw qhia ntawm vuam hlau, thiab muaj qhov zoo ntawm qhov ruaj khov arc, me me spatter, loj nkag mus, zoo nkauj weld. tsim, thiab ntau lawm efficiency.
Post lub sij hawm: Aug-21-2024
