Ifomu ye-arc welding droplet ngokweqile

Ngokweeparamitha ze-welding ukusuka kwincinci ukuya enkulu, zezi: inguqu emfutshane yesekethe, i-droplet transition, inguqu yokutshiza.
1. Utshintsho olufutshane

I-droplet etyhidiweyo ekupheleni kwe-electrode (okanye ucingo) idibene ne-short-circuit kunye ne-pool etyhidiweyo. Ngenxa yobushushu obunamandla kunye nokuncipha kwamagnetic, iqhekeza kwaye iguqule ngokuthe ngqo kwidama elinyibilikisiweyo. Oku kubizwa ngokuba yinguqu emfutshane yesekethe.

Inguqu ye-short-circuit inokufikelela kwi-stable droplet ye-metal kunye nenkqubo ye-welding ezinzileyo phantsi kwe-arc yamandla aphantsi (i-low current, i-voltage ephantsi ye-arc). Ke ngoko, ifanelekile ukuwelda iipleyiti ezincinci okanye i-welding ngegalelo lobushushu obuphantsi.

Iiparamitha eziphunyeziweyo zezi: i-welding current ingaphantsi kwe-200A

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2. Utshintsho lwamathontsi (utshintsho lwegranular)

Xa ubude be-arc budlula ixabiso elithile, i-droplet etyhidiweyo inokugcinwa ekupheleni kwe-electrode (okanye ucingo) ukuze ikhule ngokukhululekileyo ngesenzo soxinzelelo lomphezulu. Xa amandla abangela ukuba i-droplet etyhidiweyo iwe (njengomxhuzulane, amandla ombane we-electromagnetic, njl.njl.) ingaphezulu koxinzelelo lomphezulu, i-droplet etyhidiweyo iya kushiya i-electrode (okanye ucingo) kwaye iguqule ngokukhululekileyo kwi-pool etyhidiweyo ngaphandle kwesiphaluka esifutshane, njengoko kubonisiwe kuMfanekiso 4.

I-droplet transition form inokohlulwa ibe yi-coarse droplet transition kunye ne-fine droplet transition. Utshintsho lwedroplet erhabaxa yindlela apho ithontsi elinyibilikisiweyo litshintshela ngokukhululekileyo kwidama elinyibilikisiweyo ngendlela yamasuntswana arhabaxa. Ekubeni inguqu ye-droplet ye-coarse ine-splashes enkulu kunye ne-arc engazinzanga, ayinqweneleki kumsebenzi we-welding.

Ngethuba lenkqubo ye-welding, ubukhulu be-droplet etyhidiweyo ihambelana ne-welding current, ukubunjwa kocingo lwe-welding, kunye nokubunjwa kwengubo.

Iimeko zokufezekiswa zezi: i-welding yangoku i-200-300A (100% CO2), i-argon-rich gas exutywe ne-200-280A.

3 Ukutshiza inguqu (ekwabizwa ngokuba yijethi yenguqu)

Ifomu apho amathontsi atyhidiweyo akwimo yamasuntswana amahle kwaye adlule ngokukhawuleza kwisithuba se-arc ukuya kwidama elinyibilikisiweyo elikwimeko yokutshiza kuthiwa yinguqu yokutshiza. Ubungakanani be-droplet etyhidiweyo iyancipha ngokunyuka kwe-welding current.

Xa ubude be-arc buhlala buhlala, xa i-welding current inyuka kwixabiso elithile, isimo sokutshintshwa kwe-spray sibonakala. Kufuneka kugxininiswe apha ukuba ngaphezu koxinzelelo oluthile lwangoku, ubude obuthile be-arc (i-arc voltage) kufuneka bufunwe ukuvelisa inguqu yokutshiza. Ukuba i-arc voltage iphantsi kakhulu (ubude be-arc bufutshane kakhulu), kungakhathaliseki ukuba likhulu kangakanani ixabiso langoku, akunakwenzeka ukuvelisa utshintsho lwe-spray.

Iimpawu zenguqu yokutshiza ngamathontsi amahle atyhidiweyo, amathontsi atshintshiweyo aphezulu, amathontsi anyibilikisiweyo ahamba esiya echibini elinyibilikisiweyo ngesantya esiphezulu ecaleni kwendlela ye-axial yocingo lwe-welding, kwaye anenzuzo ye-arc ezinzileyo, isitshizi esincinci, ukungena okukhulu, i-weld entle. ukwakheka, kunye nokusebenza kakuhle kwemveliso.