1. Ukukhetha okulungile kwamapharamitha we-welding
(1) I-Welding current kanye ne-arc voltage Ku-CO2 yegesi evikelekile yokushisela, kububanzi bocingo ngalunye lokushisela, kunomthetho othile phakathi kwesilinganiso se-spatter kanye ne-welding current. Endaweni yoguquko lwe-short-circuit yamanje encane, izinga le-spatter yokushisela lincane. Ngemva kokungena endaweni yokuguquka kwezinhlayiyana ezinhle zamanje, izinga le-spatter ye-welding nalo lincane, futhi izinga le-spatter yokushisela likhulu kunawo wonke endaweni ephakathi. Ukuthatha ucingo olunobubanzi obungu-1.2 mm njengesibonelo, lapho i-welding current ingaphansi kuka-150A noma ingaphezu kuka-300A, i-spatter yokushisela incane, futhi phakathi kokubili, i-spatter ye-welding inkulu. Lapho ukhetha i-welding current, indawo yamanje yokushisela enezinga eliphezulu le-welding spatter kufanele igwenywe ngangokunokwenzeka, futhi i-arc voltage efanelekile kufanele ifaniswe ngemva kokunqunywa kwe-welding current.
(2) Ubude besandiso sentambo yokushisela: Ubude bokunwetshwa kwentambo yokushisela (okungukuthi ukunwetshwa okomile) nakho kunomphumela ku-spatter yokushisela. Uma ubude bezintambo zokushisela buyisikhathi eside, i-spatter yokushisela iba nkulu. Isibonelo, ngocingo olunobubanzi obungu-1.2mm, lapho i-welding current ingu-280A, lapho ubude bocingo bukhuphuka busuka ku-20mm ukuya ku-30mm, inani le-spatter ye-welding likhuphuka cishe ngo-5%. Ngakho-ke, kuyadingeka ukuthi ubude besandiso socingo lwe-welding kufanele bufinyezwe
2. Thuthukisa umthombo wamandla wokushisela
Isizathu sokuchaphaza ku-CO2 gas shielded welding ikakhulukazi esigabeni sokugcina soguquko lwe-short-circuit, ngenxa yokwanda okubukhali kwe-short-circuit current, insimbi yebhuloho eliwuketshezi ishisa ngokushesha, okuholela ekuqoqweni kokushisa, futhi ekugcineni, ibhuloho eliwuketshezi liyaqhuma ukuze likhiqize ama-splash. Uma kucatshangelwa ukuthuthukiswa komthombo wamandla wokushisela, izindlela ezinjengokuxhunywa kochungechunge lwama-reactors nama-resistors, ukushintsha kwamanje, nokulawulwa kwe-waveform yamanje kumjikelezo wokushisela zisetshenziselwa kakhulu ukunciphisa ukuqhuma kwamanje kwebhuloho eliwuketshezi futhi ngaleyo ndlela kuncishiswe i-spatter yokushisela. Njengamanje, imishini yokushisela evikelekile yegesi ye-CO2 elawulwa ngamagagasi ohlobo lwe-thyristor kanye nemishini yokushisela evikelekile yegesi ye-CO2 elawulwa yigesi evikelekile ye-CO2 isetshenzisiwe, futhi izuze impumelelo ekwehliseni isipatha sokushisela esivikelwe ngegesi ye-CO2.
3. Engeza i-argon (Ar) kugesi we-CO2:
Ngemva kokwengeza inani elithile legesi ye-argon kugesi ye-CO2, izakhiwo ezingokomzimba nezamakhemikhali zegesi ye-CO2 zashintshwa. Ngokukhula kwesilinganiso segesi ye-argon, i-spatter yokushisela yehla kancane kancane, futhi ushintsho olubaluleke kakhulu ekulahlekeni kwe-spatter kwaba lapho ububanzi bezinhlayiyana bukhulu kuno-0. 8mm spatter, kodwa bunomthelela omncane ku-spatter enobubanzi bezinhlayiyana ngaphansi kuka-0.8mm.
Ngaphezu kwalokho, ukusetshenziswa kwe-welding yegesi ehlanganisiwe evikelekile lapho i-argon yengezwa khona kugesi ye-CO2 nayo ingathuthukisa ukwakheka kwe-weld. Umthelela wokwengeza i-argon kugesi ye-CO2 ekungeneni kwe-weld, ububanzi obuhlanganisiwe nokuphakama okuyinsalela, ne-argon kugesi ye-CO2. Njengoba okuqukethwe kwegesi kukhula, ukujula kokungena kuncipha, ububanzi be-fusion buyanda, futhi ukuphakama kwe-weld kuncipha.
4. Sebenzisa ucingo lokushisela lwe-spatter oluphansi
Ngocingo oluqinile, endaweni yokuqinisekisa izici zemishini zejoyinti, ukunciphisa okuqukethwe kwekhabhoni ngangokunokwenzeka, futhi ukukhulisa ngokufanelekile izakhi ze-alloying ezifana ne-titanium ne-aluminium kunganciphisa ngempumelelo i-welding spatter.
Ngaphezu kwalokho, ukusetshenziswa kwe-flux-coreed wire CO2 gas shielded welding kunganciphisa kakhulu i-welding spatter, futhi isipatha sokushisela esikhiqizwe intambo yokushisela ene-flux-cored cishe i-1/3 yaleyo yocingo lokushisela olunezintambo eziqinile.
5. Ukulawulwa kwe-engeli yethoshi yokushisela:
Lapho ithoshi yokushisela i-perpendicular to weldment, inani elincane le-spatter yokushisela liyakhiqizwa, futhi i-angle yokuthambekela enkulu, i-spatter eyengeziwe. Lapho welding, i-angle yokuthambekela yethoshi yokushisela akufanele idlule i-20º.
Isikhathi sokuthumela: Jun-22-2022
