Unokukhetha njani oomatshini bokuwelda be-MMA?

I-Manual Metal Arc (MMA) welding yinkqubo ye-welding esetyenziswa ngokubanzi ebandakanya ukusetyenziswa kwe-electrode esetyenziswayo efakwe kwi-flux ukujoyina iziqwenga zetsimbi. Enye yezinto eziphambili ekufezekiseni inkqubo ye-welding ye-MMA ephumelelayo kukukhetha i-welding yangoku kunye ne-electrode diameter esekelwe kwizinto ezidityanisiweyo. Kweli nqaku, siza kuxubusha indlela yokukhetha oomatshini be-welding manual kunye nemisinga eyahlukeneyo esekelwe kwizinto eziphathekayo kunye nobubanzi be-electrode, kugxininise ukubaluleka kwezi zinto kwinkqubo ye-welding ye-MMA.

Xa kuziwa kwi-welding ye-MMA, ukhetho lwe-welding yangoku lubalulekile njengoko luchaphazela ngokuthe ngqo umgangatho kunye namandla e-weld. I-welding current ibhekisela ekuhambeni kombane kwi-welding circuit kwaye ilinganiswa ngama-amperes. I-welding yangoku efanelekileyo yomsebenzi othile we-welding ixhomekeke kuhlobo kunye nobukhulu bezinto ezixutywayo, kunye nobubanzi be-electrode esetyenziswayo.

Kwi-welding ye-MMA, i-diameter ye-electrode idlala indima ebalulekileyo ekunqumeni i-welding yangoku ekufuneka isetyenziswe. I-diameter ye-electrode ibonakaliswe ngokuqhelekileyo kwiimilimitha kwaye iyona nto ibalulekileyo ekunqumeni i-current efunekayo kwinkqubo ye-welding. Njengomthetho jikelele, i-electrode diameters ezinkulu zifuna i-welding currents eziphezulu, ngelixa i-electrode diameters encinci ifanelekile kwi-welding currents ezisezantsi.

Xa ukhetha umatshini we-welding manual kunye nemisinga eyahlukeneyo, kubalulekile ukuqwalasela izinto ezixutywayo kunye nobubanzi be-electrode ukuqinisekisa ukusebenza kakuhle kwe-welding. Izinto ezihlukeneyo zineemfuno ezihlukeneyo ze-welding, kwaye ukhetho lwe-welding yangoku kufuneka luhambelane neempawu ezithile zezixhobo.

Ukudibanisa izinto ezincinci, ezifana neshiti lesinyithi okanye imibhobho encinci, i-welding current esezantsi idla ngokwaneleyo. Kwiimeko ezinjalo, umatshini we-welding manual kunye nesiphumo esisezantsi sangoku, ngokuqhelekileyo kuluhlu lwama-40 ukuya kwi-150 amperes, luya kufaneleka. Iimitha ze-electrode ezincinci, ezifana ne-2.0mm okanye i-2.5mm, ziqhele ukusetyenziselwa ukudibanisa izinto ezincinci, kwaye ziyahambelana nemisinga ye-welding ephantsi.

Kwelinye icala, xa welding izinto ezityebileyo, njengentsimbi yesakhiwo okanye amacandelo anzima, i-welding yangoku ephezulu iyimfuneko ukuze kuqinisekiswe ukungena nokudityaniswa okufanelekileyo. Kule mizekelo, umatshini we-welding manual kunye nemveliso ephezulu yangoku, ukusuka kwi-150 ukuya kwi-300 amperes okanye ngaphezulu, iya kufaneleka ngakumbi. Iimitha ze-electrode ezinkulu, ezifana ne-3.2mm okanye i-4.0mm, zihlala zisetyenziselwa ukuwelda izinto ezityebileyo kwaye ziyahambelana nemisinga ephezulu yokuwelda efunekayo kwezi zicelo.

Kubalulekile ukuba uqaphele ukuba ukukhethwa kwe-welding current kufuneka kuthathelwe ingqalelo ubuchule obuthile be-welding kunye nesikhundla esisetyenziswayo. Ngokomzekelo, i-welding ethe nkqo okanye engaphezulu inokufuna imisinga ephezulu ukuhlawulela imiphumo yomxhuzulane nokuqinisekisa ukudityaniswa okufanelekileyo.

Ukongeza kwi-welding current kunye ne-diameter ye-electrode, uhlobo lwe-electrode esetyenziswayo luchaphazela ukukhethwa komatshini we-welding manual. Iindidi ezahlukeneyo ze-electrodes, ezifana ne-rutile, isiseko, okanye i-electrode efakwe kwi-cellulose, ineempawu ezithile ezichaphazela inkqubo ye-welding, kubandakanywa okwangoku kunye ne-polarity efunekayo.

Xa ukhetha umatshini we-welding manual, kubalulekile ukuqwalasela uluhlu lwangoku kunye nokulungelelaniswa ukuze kuhlaliswe imisebenzi eyahlukeneyo ye-welding. Abanye oomatshini be-welding banikezela uluhlu olubanzi lwangoku kunye nokuguquguquka kokulungelelanisa i-welding current, evumela ukuguquguquka okukhulu ekuphatheni izinto ezahlukeneyo kunye needamitha ze-electrode.

Ngapha koko, umgangatho kunye nokuthembeka komatshini wokuwelda zizinto ezibalulekileyo ekufuneka ziqwalaselwe, njengoko zichaphazela ngokuthe ngqo ukuzinza kunye nokuhambelana kwemveliso yangoku ye-welding. Utyalo-mali kumatshini we-welding osemgangathweni ophezulu kunye nolawulo oluchanekileyo lwangoku kunye nokusebenza okuzinzileyo kunokuphucula kakhulu iziphumo ze-welding kunye nokusebenza kakuhle.

Ukuqukumbela, ukukhethwa komatshini we-welding manual kunye nemisinga eyahlukeneyo esekelwe kwizinto eziphathekayo kunye nobubanzi be-electrode yinkalo ebalulekileyo yenkqubo ye-MMA ye-welding. Ngokuqwalasela ngokucophelela iimfuno ezithile zezixhobo, i-electrode diameters, kunye nobuchule be-welding, abashicileli banokukhetha owona matshini ufanelekileyo we-welding ukufezekisa iziphumo ezilungileyo. Ukuqonda ubudlelwane phakathi kwe-welding yangoku, ubukhulu be-electrode, kunye nobukhulu bezinto eziphathekayo kubalulekile kwi-MMA ye-welding eyimpumelelo kwaye kunokuba negalelo kwimveliso yomgangatho ophezulu, i-welds ehlala ixesha elide.