Ngokusho kwamapharamitha wokushisela ukusuka kokuncane kuye kokukhulu, yilezi: ukuguquka kwesiyingi esifushane, ukuguqulwa kwamaconsi, ukushintshwa kwesifutho.
1. Ukuguquka kwesiyingi esifushane
Iconsi elincibilikisiwe ekugcineni kwe-electrode (noma intambo) ixhumene nesekhethi emfishane nedamu elincibilikisiwe. Ngenxa yokushisa okuqinile nokufinyela kazibuthe, iyaphuka futhi ishintshele ngqo echibini elincibilikisiwe. Lokhu kubizwa ngokuthi i-short-circuit transition.
Inguquko yesiyingi esifushane ingafinyelela ukuguqulwa kwamaconsi ensimbi ezinzile kanye nenqubo yokushisela ezinzile ngaphansi kwe-arc yamandla aphansi (amanje aphansi, i-arc voltage ephansi). Ngakho-ke, kufanelekile ukuthungatha amapuleti amancane noma i-welding ngokufaka ukushisa okuphansi.
Imingcele ezuziwe yilezi: i-welding current ingaphansi kuka-200A
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2. I-Droplet Transition (i-granular transition)
Uma ubude be-arc budlula inani elithile, i-droplet encibilikisiwe ingagcinwa ekugcineni kwe-electrode (noma intambo) ukuze ikhule ngokukhululeka ngesenzo sokuqina kwendawo. Lapho amandla abangela ukuba i-droplet encibilikisiwe iwe (njengamandla adonsela phansi, amandla kazibuthe kagesi, njll.) emakhulu kunokuqina kwendawo, i-droplet encibilikisiwe izoshiya i-electrode (noma intambo) futhi ishintshele echibini elincibilikisiwe ngaphandle kokujikeleza okufushane, njengoba kuboniswe kuMfanekiso 4.
Ifomu lokushintsha lamaconsi lingahlukaniswa libe ukuguquguquka kwamaconsi amaholoholo kanye nokushintsha kwamaconsi amahle. Inguquko yeconsi elimahhadlahhadla yindlela lapho iconsi elincibilikisiwe lishintsha ngokukhululeka liye echibini elincibilikisiwe libe yizinhlayiya ezimahhadla. Njengoba uguquko lwamaconsi amaholoholo lunama-splashes amakhulu kanye ne-arc engazinzile, akufiseleki emsebenzini wokushisela.
Ngesikhathi senqubo yokushisela, ubukhulu beconsi elincibilikisiwe lihlobene namanje welding, ukwakheka kocingo lokushisela, kanye nokwakheka kwentolo.
Izimo zokufezeka yilezi: i-welding current 200-300A (100% CO2), i-argon-rich rich mix gas 200-280A.
3 I-spray transition (ebizwa nangokuthi i-jet transition)
Ifomu lapho amaconsi ancibilikisiwe esesimweni sezinhlayiya ezinhle futhi adlule ngokushesha endaweni ye-arc eya echibini elincibilikisiwe elisesimweni sokufutha libizwa ngokuthi inguquko yesifutho. Ubukhulu be-droplet encibilikisiwe buyancipha ngokunyuka kwamandla okushisela.
Uma ubude be-arc buhlala buhlala njalo, lapho i-welding current inyuka ibe yinani elithile, isimo sokushintsha kwesifutho siyavela. Kufanele kugcizelelwe lapha ukuthi ngaphezu kokuminyana okuthile kwamanje, ubude obuthile be-arc (i-arc voltage) kumele budingeke ukuze kukhiqizwe inguquko yesifutho. Uma i-arc voltage iphansi kakhulu (ubude be-arc bufushane kakhulu), kungakhathaliseki ukuthi inani lamanje likhulu kangakanani, akunakwenzeka ukukhiqiza ukuguqulwa kwesifutho.
Izici zokushintsha kwesifutho amaconsi amahle ancibilikisiwe, imvamisa yokuguquka okuphezulu, amaconsi ancibilikisiwe ahamba ebheke echibini elincibilikisiwe ngesivinini esikhulu eduze kwe-axial yocingo lokushisela, futhi anezinzuzo ze-arc ezinzile, isiphalaphala esincane, ukungena okukhulu, i-weld enhle. ukwakheka, kanye nokusebenza kahle kokukhiqiza.
Isikhathi sokuthumela: Aug-21-2024
