I-aluminiyam i-alloy welding yahluke kakhulu kwi-welding ye-carbon steel jikelele, insimbi engenasici kunye nezinye izinto. Kulula ukuvelisa iziphene ezininzi ezingenazo ezinye izinto, kwaye amanyathelo ajoliswe kuwo kufuneka athathwe ukuze aphephe. Makhe sijonge kwiingxaki ekulula ukuba zenzeke kwi-aluminium alloy welding kunye neemfuno zobuchwepheshe be-welding.
Ubunzima kwi-welding aluminium alloy materials I-thermal conductivity ye-aluminium alloy materials yi-1 ukuya ku-3 amaxesha amakhulu kuneyentsimbi, kwaye kulula ukutshisa. Nangona kunjalo, lo mbandela awuchasananga nokushisa okuphezulu kwaye une-coefficient enkulu yokwandisa xa ushushu, okwenza kube lula ukuguqula i-welding deformation. Ngaphezu koko, lo mbandela uthambekele ekuqhekekeni kunye nokungena kwe-weld ngexesha le-welding, ngakumbi i-welding ye-aluminium plates encinci inzima kakhulu.
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I-aluminiyam i-alloy welding iya kuvelisa inani elithile le-hydrogen kwi-pool etyhidiweyo. Ukuba ezi gesi azikhutshwa ngaphambi kokuba i-weld yenziwe, iya kubangela iipores kwi-weld kwaye ichaphazele umgangatho weendawo ezidibeneyo.
I-aluminiyam yintsimbi efakwa i-oxidized ngokulula, kwaye akukho phantse i-aluminiyam engena-oxidized emoyeni. Xa umphezulu we-aluminium alloy ubonakaliswe ngokuthe ngqo emoyeni, ifilimu ye-aluminium oxide exineneyo kunye ne-insoluble iya kwenza phezu kwayo. Ifilimu yeoksidi iyakwazi ukumelana nokunxiba kunye nobushushu obuphezulu, kunye neqondo lokunyibilika elingaphezulu kwama-2000 degrees Celsius. Nje ukuba yenziwe, ubunzima bokuqhubekeka obulandelayo buya kwandiswa kakhulu.
I-aluminiyam i-alloy welding nayo ineengxaki ezifana ne-joint elula ukuthambisa, kunye noxinzelelo lomphezulu kwimo etyhidiweyo incinci kwaye kulula ukuyivelisa iziphene.
Iimfuno zenkqubo ye-aluminiyam ye-alloy welding
Okokuqala, ngokwembono yezixhobo zokuwelda, ukuba umatshini we-welding we-MIG/MAG usetyenziswa, kufuneka ube nemisebenzi ye-pulse efana ne-pulse enye okanye i-double pulse. Umsebenzi we-pulse kabini unomphumo ongcono kakhulu. I-Double pulse yi-superposition ye-high-frequency pulse kunye ne-low-frequency pulse, kunye ne-low-frequency pulse isetyenziselwa ukumodareyitha i-high-frequency pulse. Ngale ndlela, i-double pulse current igxininiswe kwi-frequency ye-low-frequency pulse ukuba itshintshe ngezikhathi ezithile phakathi kwe-peak current kunye nesiseko sangoku, ukwenzela ukuba i-weld yenze izikali zeentlanzi eziqhelekileyo.
Ukuba ufuna ukutshintsha impembelelo yokwenza i-weld, unokulungelelanisa ukuphindaphinda kunye nexabiso eliphezulu le-low-frequency pulse. Ukulungelelanisa i-low-frequency pulse frequency kuya kuchaphazela isantya sokutshintsha phakathi kwexabiso le-peak kunye nexabiso lesiseko se-double pulse current, eya kutshintsha isithuba sepateni yentlanzi ye-weld. Isantya esikhulu sokutshintsha, sincinci isithuba sepateni yesikali sentlanzi. Ukulungelelanisa ixabiso eliphakamileyo le-low-frequency pulse kunokutshintsha umphumo oshukumisayo kwi-pool etyhidiweyo, ngaloo ndlela utshintshe ubunzulu be-welding. Ukukhetha ixabiso eliphakamileyo eliphakamileyo kuneempembelelo ezicacileyo ekunciphiseni ukuveliswa kwee-pores, ukunciphisa igalelo lokushisa, ukuthintela ukwanda kunye nokuguqulwa, kunye nokuphucula amandla e-weld.
Ukongeza, ngokwembono yenkqubo yokuwelda, le miba ilandelayo kufuneka iqatshelwe:
Okokuqala, umphezulu we-aluminium alloy kufuneka uhlambuluke ngaphambi kokuba udibanise, kwaye lonke uthuli kunye neoli kufuneka zisuswe. I-acetone ingasetyenziselwa ukucoca umphezulu we-aluminium alloy welding point. Kwiplate eshinyeneyo ye-aluminium alloy, kufuneka icocwe ngebrashi yocingo kuqala, emva koko nge-acetone.
Okwesibini, i-welding wire material esetyenzisiweyo kufuneka ibe kufuphi nempahla yomzali ngokusemandleni. Ukuba ukhetha i-aluminiyam ye-silicon ye-welding wire okanye i-aluminium ye-aluminium welding wire kufuneka imiselwe ngokweemfuno ze-weld. Ukongeza, i-aluminium ye-aluminium ye-welding wire ingasetyenziselwa kuphela ukuwelda izixhobo ze-aluminium, ngelixa i-aluminium ye-silicon ye-welding isetyenziswa ngokubanzi. Iyakwazi ukuwelda izixhobo ze-aluminium ze-silicon kunye nezixhobo ze-aluminium ze-magnesium.
Okwesithathu, xa ubukhulu beplate bukhulu, ipleyiti kufuneka itshiswe kwangaphambili, ngaphandle koko kulula ukuyidibanisa. Xa uvala i-arc, umbane omncinci kufuneka usetyenziswe ukuvala i-arc kwaye ugcwalise umgodi.
Okwesine, xa usenza i-tungsten inert ye-arc welding yegesi, kufuneka kusetyenziswe umatshini we-DC argon arc, kwaye phambili kunye nokubuyisela umva i-AC kunye ne-DC kufuneka isetyenziswe ngokuhlukileyo. Phambili i-DC isetyenziselwa ukucoca ukungunda komphezulu we-oxidation ye-aluminium, kunye ne-DC ebuyela umva isetyenziselwa ukuwelda.
Kwakhona qaphela ukuba iinkcukacha ze-welding kufuneka zibekwe ngokuhambelana nobukhulu beplate kunye neemfuno ze-weld; Ukuwelda kwe-MIG kufuneka kusebenzise ivili elikhethekileyo lokutya kwe-aluminium kunye netyhubhu yesikhokelo socingo lweTeflon, kungenjalo iitshiphusi ze-aluminium ziya kuveliswa; intambo ye-welding gun akufanele ibe yinde kakhulu, njengoko i-aluminium welding wire ithambile kwaye intambo ye-welding gun ende iya kuchaphazela ukuzinza kwe-wire feeding.
Ixesha lokuposa: Aug-27-2024
