Welding nwere ike iji AC ma ọ bụ DC ịgbado ọkụ igwe.Mgbe ị na-eji igwe ịgbado ọkụ DC, enwere njikọ dị mma yana njikọ azụ.Ekwesịrị ịtụle ihe ndị dị ka electrode eji, ọnọdụ akụrụngwa ihe owuwu, na ịdị mma ịgbado ọkụ.
E jiri ya tụnyere ọkọnọ AC, ọkụ ọkụ DC nwere ike inye arc kwụsiri ike na mbufe droplet.- Ozugbo agbanyere arc ahụ, DC arc nwere ike ịnọgide na-agba ọkụ na-aga n'ihu.
Mgbe ị na-eji ike ịgbado ọkụ AC, n'ihi mgbanwe nke ugbu a na voltaji direction, na arc kwesịrị ka emenyụ na re-ọkụ ugboro 120 kwa nkeji, arc enweghị ike ọkụ na-aga n'ihu na kwụsie ike.
N'ihe banyere ịgbado ọkụ dị ala ugbu a, DC arc nwere mmetụta wetting dị mma na metal weld a wụrụ awụ ma nwee ike ịhazi nha nke weld bead, yabụ na ọ dabara nke ọma maka ịgbado akụkụ dị mkpa.Ike DC dabara adaba maka ịgbado ọkụ n'elu na kwụ ọtọ karịa ike AC n'ihi na DC arc dị mkpụmkpụ.
Ma mgbe ụfọdụ, arc ịfụ ọkụ ọkụ DC bụ nsogbu a ma ama, ihe ngwọta ya bụ ịtụgharị na ọkụ ọkụ AC.Maka AC na DC dual-ebumnuche electrodes emebere maka AC ma ọ bụ DC ịgbado ọkụ, ọtụtụ ngwa ịgbado ọkụ na-arụ ọrụ nke ọma n'okpuru DC ike ọnọdụ.
(1)Nkịtị structural ígwè ịgbado ọkụ
Maka igwe elektrọn nchara arụ ọrụ nkịtị na electrodes acid, enwere ike iji ma AC na DC.Mgbe ị na-eji igwe ịgbado ọkụ DC iji weld efere dị mkpa, ọ ka mma iji njikọ ntụgharị DC.
N'ozuzu, enwere ike iji njikọ dị ugbu a maka ịgbado ọkụ dị ukwuu iji nweta ntinye ka ukwuu.N'ezie, azu azu azu njikọ nwekwara ekwe omume, ma n'ihi na akwado ịgbado ọkụ nke oké efere na grooves, ọ ka mma na-eji kpọmkwem ugbu a agbara njikọ.
Eletrọd ndị bụ isi na-ejikarị njikọ azụ DC, nke nwere ike ibelata porosity na spatter.
(2)Mgbado ọkụ argon arc a wụrụ awụ (MIG welding)
Mgbado ọkụ ọla n'ozuzu na-eji DC reverse njikọ, nke na-abụghị nanị na-eme ka arc ahụ kwụsie ike, kamakwa na-ewepụ ihe nkiri oxide n'elu nke weldment mgbe ịgbado ọkụ aluminum.
(3) Tungsten argon arc ịgbado ọkụ (TIG ịgbado ọkụ)
Tungsten argon arc welding nke ígwè akụkụ, nickel na alloys, ọla kọpa na alloys, ọla kọpa na ya alloys nwere ike jikọọ na kpọmkwem ugbu a.Ihe kpatara ya bụ na ọ bụrụ na a gbanwee njikọ DC na tungsten electrode na-ejikọta ya na electrode dị mma, okpomọkụ nke electrode dị mma ga-adị elu, okpomọkụ ga-adịwanye elu, na tungsten electrode ga-agbaze ngwa ngwa.
Na-agbaze ngwa ngwa nke ukwuu, enweghị ike ime ka arc ahụ na-ere ọkụ ruo ogologo oge, na tungsten a wụrụ awụ na-adaba n'ime ọdọ mmiri a wụrụ awụ ga-eme ka ntinye tungsten ma belata ogo weld.
(4)CO2 gas mkpuchi ịgbado ọkụ (MAG ịgbado ọkụ)
Iji mee ka arc ahụ kwụsie ike, ọdịdị dị mma nke ọma , ma belata spatter, CO2 gas na-echebe ịgbado ọkụ n'ozuzu na-eji DC reverse njikọ. kpo oku nke workpiece, na DC nti njikọ na-ejikarị.
(5)Mgbado ọkụ igwe anaghị agba nchara
Igwe anaghị agba nchara electrode ka ọkacha mma DC tụgharịa.Ọ bụrụ na ịnweghị igwe ịgbado ọkụ DC na ịdịmma chọrọ adịghị oke oke, ịnwere ike iji ụdị electrode nke Chin-Ca were igwe ịgbado ọkụ AC.
(6)Dozie ịgbado ọkụ nke igwe nkedo
Ndozi ịgbado ọkụ nke akụkụ nke nkedo n'ozuzu na-anabata usoro njikọ azụ DC.N'oge ịgbado ọkụ, arc ahụ kwụsiri ike, spatter dị ntakịrị, na omimi ntinye bụ nke na-emighị emeri, nke na-emezu ihe achọrọ nke ọnụego dilution dị ala maka ịgbado ọkụ nkedo ígwè iji belata nguzobe mgbape.
(7) Mkpu mmiri arc akpaka weld
Enwere ike ịgbado ọkụ ọkụ AC ma ọ bụ DC n'ime mmiri.A na-ahọrọ ya dabere na chọrọ ịgbado ọkụ ngwaahịa na ụdị flux.Ọ bụrụ na eji nickel-manganese obere silicon flux, DC ike ọkọnọ welding ga-eji hụ nkwụsi ike nke aak iji nweta ukwuu ntinye.
(8) Tụnyere n'etiti AC ịgbado ọkụ na DC ịgbado ọkụ
E jiri ya tụnyere ọkọnọ AC, ọkụ ọkụ DC nwere ike inye arc kwụsiri ike na mbufe droplet.- Ozugbo agbanyere arc ahụ, DC arc nwere ike ịnọgide na-agba ọkụ na-aga n'ihu.
Mgbe ị na-eji ike ịgbado ọkụ AC, n'ihi mgbanwe nke ugbu a na voltaji direction, na arc kwesịrị ka emenyụ na re-ọkụ ugboro 120 kwa nkeji, arc enweghị ike ọkụ na-aga n'ihu na kwụsie ike.
N'ihe banyere ịgbado ọkụ dị ala ugbu a, DC arc nwere mmetụta wetting dị mma na metal weld a wụrụ awụ ma nwee ike ịhazi nha nke weld bead, yabụ na ọ dabara nke ọma maka ịgbado akụkụ dị mkpa.Ike DC dabara adaba maka ịgbado ọkụ n'elu na kwụ ọtọ karịa ike AC n'ihi na DC arc dị mkpụmkpụ.
Ma mgbe ụfọdụ, arc ịfụ ọkụ ọkụ DC bụ nsogbu a ma ama, ihe ngwọta ya bụ ịtụgharị na ọkụ ọkụ AC.Maka AC na DC abụọ-ebumnobi electrodes emebere maka AC ma ọ bụ DC ịgbado ọkụ, ọtụtụ ngwa ịgbado ọkụ na-arụ ọrụ nke ọma n'okpuru ọnọdụ ike DC.
N'ime ịgbado ọkụ nke akwụkwọ ntuziaka, igwe ịgbado ọkụ AC na ụfọdụ ngwaọrụ ndị ọzọ dị ọnụ ala, ma nwee ike zere mmetụta ọjọọ nke ike ịfụ arc dị ka o kwere mee.Mana na mgbakwunye na ọnụ ahịa akụrụngwa dị ala, ịgbado ọkụ na ike AC adịghị arụ ọrụ dị ka ike DC.
Isi mmalite ịgbado ọkụ (CC) nwere njirimara mgbapụ dị elu kacha mma maka ịgbado ọkụ n'aka.Mgbanwe nke voltaji kwekọrọ na mgbanwe dị ugbu a na-egosi mbelata nke nta nke nta na ugbu a ka ogologo arc na-abawanye.Njirimara a na-egbochi oke arc ugbu a ọbụlagodi ma ọ bụrụ na welder na-achịkwa nha ọdọ mmiri a wụrụ awụ.
Mgbanwe na-adị mgbe niile na ogologo arc bụ ihe a na-apụghị izere ezere ka welder na-ebugharị electrode n'akụkụ weldment, na njirimara ntinye nke isi iyi ịgbado ọkụ arc na-eme ka nkwụsi ike arc n'oge mgbanwe ndị a.
Oge nzipu: Mee-25-2023