Aluminiyamu aloyi kuwotcherera ndi wosiyana kwambiri kuwotcherera wa general carbon zitsulo, zitsulo zosapanga dzimbiri ndi zipangizo zina. Ndikosavuta kupanga zolakwika zambiri zomwe zida zina zilibe, ndipo njira zowunikira ziyenera kuchitidwa kuti zipewe. Tiyeni tiwone zovuta zomwe zimakhala zosavuta kuti zichitike pakuwotcherera kwa aluminiyamu komanso zofunikira paukadaulo wowotcherera.
Zovuta pakuwotcherera zida za aluminiyamu alloy Matenthedwe amtundu wa aluminiyamu aloyi ndi 1 mpaka 3 kuwirikiza kawiri kuposa chitsulo, ndipo ndikosavuta kutenthetsa. Komabe, nkhaniyi si kugonjetsedwa ndi kutentha kwambiri ndipo ali ndi coefficient lalikulu la kukulitsa pamene mkangano, amene mosavuta kuchititsa kuwotcherera deformation. Komanso, nkhaniyi sachedwa ming'alu ndi kuwotcherera malowedwe pa kuwotcherera, makamaka kuwotcherera mbale woonda aluminiyamu n'kovuta kwambiri.
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Aluminiyamu aloyi kuwotcherera kumatulutsa kuchuluka kwa haidrojeni mu dziwe losungunuka. Ngati mipweya iyi siinatulutsidwe kuwotcherera kusanapangidwe, kumayambitsa ma pores mu weld ndikukhudza mawonekedwe a welded.
Aluminiyamu ndi chitsulo chomwe chimapangidwa ndi okosijeni mosavuta, ndipo mumlengalenga mulibe pafupifupi aluminiyamu yopanda oxidized. Pamene pamwamba pa aluminiyumu aloyi akuwonekera mwachindunji mpweya, wandiweyani ndi insoluble zotayidwa okusayidi filimu kupanga pamwamba pake. Kanema wa oxide ndi wovuta kwambiri kuvala komanso kutentha kwambiri, ndi malo osungunuka a madigiri 2000 Celsius. Akapangidwa, zovuta zotsatila zidzawonjezeka kwambiri.
Aluminiyamu aloyi kuwotcherera alinso ndi mavuto monga olowa n'zosavuta kufewetsa, ndi kukangana pamwamba mu boma losungunuka ndi laling'ono ndi zosavuta kutulutsa zilema.
Zofunikira pakuwotcherera kwa aluminium alloy
Choyamba, pakuwona zida zowotcherera, ngati makina owotcherera a MIG/MAG agwiritsidwa ntchito, amayenera kukhala ndi magwiridwe antchito monga kugunda kamodzi kapena kugunda kawiri. Kugwira ntchito kwapawiri kumakhala ndi zotsatira zabwino kwambiri. Kugunda kwapawiri ndipamwamba kwa kugunda kwapamwamba kwambiri komanso kutsika kwapang'onopang'ono, ndipo kugunda kwapang'onopang'ono kumagwiritsidwa ntchito kuwongolera kugunda kwamphamvu kwambiri. Mwanjira iyi, kugunda kwapawiri kwapawiri kumakhazikika pafupipafupi kugunda kwapang'onopang'ono kuti nthawi ndi nthawi kusinthana pakati pa nsonga zamakono ndi maziko apano, kuti weld apange masikelo a nsomba nthawi zonse.
Ngati mukufuna kusintha mawonekedwe a weld, mutha kusintha ma frequency ndi nsonga yamtengo wapatali wa pulse otsika-frequency. Kusintha kutsika kwapang'onopang'ono kumakhudza kuthamanga kwa kusintha pakati pa mtengo wapamwamba ndi mtengo woyambira wapawiri pulse current, zomwe zidzasintha kusiyana kwa chitsanzo cha nsomba za weld. Liwiro losintha likamakulirakulira, m'pamenenso kuchepekera kwa katalikirana kwa ma sikelo a nsomba. Kusintha nsonga yapamwamba ya kugunda kwapang'onopang'ono kumatha kusintha kugwedezeka kwa dziwe losungunuka, potero kusintha kuya kwake. Kusankha nsonga yamtengo wapatali kumakhala ndi zotsatira zoonekeratu pa kuchepetsa kubadwa kwa pores, kuchepetsa kutentha kwa kutentha, kuteteza kukula ndi kusinthika, ndi kupititsa patsogolo mphamvu za weld.
Kuphatikiza apo, potengera momwe kuwotcherera, zinthu zotsatirazi ziyenera kuzindikirika:
Choyamba, pamwamba pa aluminiyumu alloy ayenera kutsukidwa pamaso kuwotcherera, ndipo fumbi zonse ndi mafuta ayenera kuchotsedwa. Acetone angagwiritsidwe ntchito kuyeretsa pamwamba pa zotayidwa aloyi mfundo kuwotcherera. Kwa aluminiyumu ya aluminiyumu yamitundu yambiri, iyenera kutsukidwa ndi burashi yawaya kaye, kenako ndi acetone.
Chachiwiri, zida zowotcherera zomwe zimagwiritsidwa ntchito ziyenera kukhala pafupi ndi zinthu za makolo momwe zingathere. Kaya kusankha aluminiyamu pakachitsulo kuwotcherera waya kapena aluminium magnesium kuwotcherera waya ayenera kutsimikiziridwa malinga ndi zofunikira za weld. Kuphatikiza apo, waya wowotcherera wa aluminium magnesium ukhoza kugwiritsidwa ntchito powotcherera zida za aluminium magnesium, pomwe waya wowotcherera wa aluminium silicon ndi wogwiritsidwa ntchito kwambiri. Imatha kuwotcherera zida za aluminium silicon ndi zida za aluminium magnesium.
Chachitatu, makulidwe a mbaleyo akachuluka, mbaleyo iyenera kutenthedwa pasadakhale, apo ayi ndiyosavuta kuwotcherera. Potseka arc, kakombo kakang'ono kamayenera kugwiritsidwa ntchito kutseka arc ndikudzaza dzenje.
Chachinayi, popanga kuwotcherera kwa tungsten inert gas arc, makina owotcherera a DC argon arc ayenera kugwiritsidwa ntchito, ndipo kutsogolo ndi kumbuyo AC ndi DC ziyenera kugwiritsidwa ntchito mosinthana. Forward DC imagwiritsidwa ntchito kuyeretsa nkhungu ya oxidation ya aluminiyamu, ndipo reverse DC imagwiritsidwa ntchito kuwotcherera.
Komanso dziwani kuti kuwotcherera specifications ayenera kukhazikitsidwa malinga ndi makulidwe mbale ndi kuwotcherera zofunika; Kuwotcherera kwa MIG kuyenera kugwiritsa ntchito gudumu lapadera la aluminiyamu lodyera mawaya ndi chubu chowongolera mawaya a Teflon, apo ayi tchipisi ta aluminiyamu tipanga; chingwe chowotcherera chamfuti sichiyenera kukhala chotalika kwambiri, chifukwa waya wowotcherera wa aluminiyamu ndi wofewa ndipo chingwe chowotcherera chautali kwambiri chimakhudza kukhazikika kwa waya.
Nthawi yotumiza: Aug-27-2024
