isiZulu
Kwadalwa ngo 05.10
Umehluko Phakathi Kokuwela Nge-CO₂, MIG/MAG kanye Ne-Pulsed MIG/MAG
Umqondo kanye Nokuhlukaniswa Kokushisela Kwensimbi Ngegesi (GMAW)
Ukushisela Kwensimbi Ngegesi (GMAW) kuyinqubo yokushisela nge-arc esebenzisa ugesi wocingo oludliwayo, ngegesi yokuvikela enikezwa ngaphandle esebenza njengendawo ye-arc. Igazi livikela amaconsi ensimbi ancibilikile, ichibi lokushisela kanye nensimbi esezingeni lokushisa eliphezulu endaweni yokushisela. Ngokwezinto ezahlukene zocingo kanye nezingesi zokuvikela, ihlukaniswa izinqubo ezilandelayo:
1. Ukuhlukaniswa ngohlobo lwentambo yokushisela
- Kuhlukaniswe kube ukushisela ngentambo eqinile nokushisela ngentambo enomgqomo wokugcwalisa.
- Intambo eqinile enegesi evikelayo (i-Ar noma i-He) ichazwa njengokushisela kwe-MIG (Metal Inert Gas Arc Welding).
- Intambo eqinile enegesi exubile enothe nge-argon ichazwa njengokushisela kwe-MAG (Metal Active Gas Arc Welding).
- Intambo eqinile enegesi evikelayo ye-CO₂ ihamba nje ibizwe ngokuthi ukushisela kwe-CO₂.
- Ngokwentambo enomgqomo wokugcwalisa: Ukushisela nge-arc kusetshenziswa i-CO₂ noma ingxube ye-CO₂+Ar njengegesi evikelayo kubizwa ngokuthi ukushisela ngentambo enomgqomo wokugcwalisa okune-gas; ukushisela ngaphandle kwegesi evikelayo yangaphandle kubizwa ngokuthi ukushisela nge-arc okuzivikelayo.
2. Umehluko phakathi kokushisela okujwayelekile kwe-MIG/MAG nokushisela kwe-CO₂
- Ukushisela kwe-CO₂ kunezici ezifana nezindleko eziphansi nomkhiqizo ophezulu, kodwa-ke kunezinkinga ezicacile njengokufafaza okunzima nokubukeka okubi kwe-weld. Ngalesi sizathu, izicelo eziningi zezimboni zisebenzisa ukushisela okujwayelekile kwe-MIG/MAG esikhundleni salokho.
- Ukuhlanganisa okujwayelekile kwe-MIG/MAG kuncike ku-inert gas noma i-argon-rich mixed gas shielding, kanti ukuhlanganisa kwe-CO₂ okuhlanzekile kubonisa izakhiwo eziqinile zokubola. Lomehluko oyisisekelo unquma izici zawo kanye nemikhawulo yesicelo.
3. Izinzuzo Eziyinhloko Zokuhlanganisa I-MIG/MAG Ngaphezu Kokuhlanganisa I-CO₂
- Ukuqeda ukufutha okungaphezu kuka-50%: Ngaphansi kokuvikelwa igesi ye-argon noma ecebile nge-argon, i-welding arc ihlala izinzile kakhulu. Ukusebenza kwe-arc okuzinzile kugcinwa ngesikhathi sokudluliswa kwamaconsa nokudluliswa okufafazayo. Ngisho nasekwedluliselweni okufushane nomjikelezo nge-MAG welding ephansi, ukudonswa kwe-arc kumaconsa ancibilikile kuncishiswe kakhulu, kunciphisa ukufutha kakhulu.
- Ubunye nobuhle be-weld bead: I-MIG/MAG welding iqinisekisa ukudluliswa kwamaconsa okulinganayo, okuhle nokuzinzile, okuholela ekwakhekeni kwe-weld okubushelelezi, okulinganayo nokubukeka okuhle.
- Izinsimbi ezisabela ekushiseni nezinsimbi ezihlangene: Umoya wokushisa unokunciphisa noma cishe ukungabi khona kokubola. I-MIG/MAG ingashisa hhayi kuphela insimbi yekhabhoni nensimbi ephakeme, kodwa futhi nezinsimbi ezisabela njenge-aluminium ne-aluminium alloys, insimbi engagqwali, i-magnesium ne-magnesium alloys. Kuthuthukisa kakhulu ukusebenza kwenqubo yokushisa, ikhwalithi yokushisa nokusebenza komkhiqizo.
4. Umehluko phakathi kwe-Pulsed MIG/MAG ne-Standard MIG/MAG Welding
- I-Standard MIG/MAG isebenzisa ikakhulukazi ukudlulisela okufafazayo kagesi ophakeme nokudlulisela okufushane kagesi ophansi. Ukusebenza kagesi ophansi kusahlushwa ukufafaza okukhulu nokubunjwa okubi. Ikakhulukazi izinsimbi ezisabela njenge-aluminium alloys nensimbi engagqwali azikwazi ukushisela kahle kagesi ophansi.
- Ukushisela kwe-MIG/MAG okune-pulse kwathuthukiswa ukuxazulula le nkinga. Isici sayo esiyinhloko ukudluliswa kweconsi elilodwa nge-pulse yamanje, okuyinto esiyingxenye yemodi yokudluliswa kweconsi lesifutho.
- Imodi yokusebenza efanele ukushaya okukodwa, ikonsi eyodwa. Ukulungisa imvamisa ye-pulse kulawula imvamisa yokudluliswa kweconsi kanye nesivinini sokuncibilika kocingo. Ububanzi beconsi bucishe bububanzi bocingo, okuletha ukushisa okuphansi kwe-arc kanye nezinga lokushisa eliphansi leconsi uma kuqhathaniswa nokudluliswa okujwayelekile kwesifutho nokudluliswa kweconsi elikhulu.
Izinzuzo eziyinhloko:
- Ukuncibilika okuphezulu kwentambo;
- Ukubhemuza okuncane, ukushiswa okuphansi kwezinto ezihlangene kanye nendawo yokusebenza engcono;
- Ukufutha okuncane noma cishe akukho nokuhamba kahle komnsalo;
- Ifanele ukushisela kuzo zonke izikhundla ngokwakheka okuhle kokushisela, ububanzi obukhulu bokushisela, ukungena komunwe okujulile kanye nokuvuselelwa okuncane;
- Ukushisela okuphelele kwamanje aphansi kwezinsimbi ezisabela njengezinhlanganisela ze-aluminium;
- Kwengeza ububanzi bamanje obusebenzisekayo bokudlulisa okufafazayo; ukudlulisa amaconsi okuzinzile kungafinyelelwa kusuka cishe ekubeni okubucayi kakhulu kokufafaza kuye emashumini amaningana amperes.
5. Amaphutha okushisela kwe-Pulsed MIG/MAG
- Awekho izinqubo ezingenamikhawulo. Uma kuqhathaniswa nokushisela okujwayelekile kwe-MIG/MAG:
- Ukukhiqiza okushisela okuncane kancane okubonakala ekusebenzeni okujwayelekile;
- Izidingo eziphakeme zamakhono omshiseli kanye nesipiliyoni sokusebenza;
- Izindleko eziphakeme kakhulu zemishini yokushisela.
6. Izimo Zokusebenzisa Lapho I-Pulsed MIG/MAG Idingeka Khona
- Ukukhethwa kwe-pulsed MIG/MAG kuncike ezidingweni zenqubo yokuhlanganisa. Kubalulekile ezintweni ezilandelayo nezimboni:
- I-carbon steel: Izicelo ezidinga ikhwalithi ephezulu yokuhlanganisa nokubukeka, njengeziqukathi ezicindezelweyo, amabhoyila, izishintshi ezishisayo zamakhemikhali, izishintshi ezishisayo zomoya ophakathi, namacase we-spiral we-hydroelectric turbine.
- Insimbi engagqwali: I-welding ephansi (ngaphansi kuka-200A) enezindinganiso eziqinile zekhwalithi nokubukeka, okuhlanganisa izingxenye zezitimela kanye nezitsha zokucindezela zamakhemikhali.
- I-Aluminum nezinhlanganisela ze-aluminum: I-welding ephansi (ngaphansi kuka-200A) yokubukeka nokusebenza okuphezulu, esetshenziswa kabanzi ezitimeleni ezihamba ngesivinini esikhulu, izishintshi zamandla aphezulu kanye nemishini yokuhlukanisa umoya.
- I-Copper nezinsimbi ezihlangene ne-copper: Cishe zonke izinsimbi ezihlangene ne-copper ezishisayo ngaphakathi kwebanga le-GMAW zisebenzisa inqubo ye-pulsed MIG/MAG.
Xhumana
Shintsha ulwazi lwakho futhi sizokuthinta.
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