Gas Metal Arc Welding (GMAW): The "Preferred Option" bakeng sa ho Welding ea boleng bo holimo
Gas Metal Arc Welding (GMAW): The "Preferred Option" bakeng sa ho Welding ea boleng bo holimo
Gas metal arc welding (GMAW) e sebelisa khase ea inert kapa khase e sebetsang e le mokhoa oa tšireletso ho arola tšusumetso ea moea letamong le qhibilihisitsoeng. E na le boleng bo phahameng ba welding le sebopeho se setle sa weld. E arotsoe ka mefuta e 'meli e tloaelehileng: tungsten inert gas welding (TIG) le CO₂ gas shielded welding (MIG/MAG), e loketseng lisebelisoa le maemo a fapaneng, ka ho latellana.
1. Tungsten Inert Gas Welding (TIG Welding): "Setsebi" sa Precision Welding
TIG welding e sebelisa argon gas (bohloeki ≥99.99%) e le khase e sireletsang. E futhumatsa workpiece ka arc pakeng tsa electrode tungsten le workpiece, 'me e ka etsoa ka kapa ntle le terata filler (autogenous welding). E loketse bakeng sa ho cheseletsa ka mokhoa o nepahetseng oa lisebelisoa tse nang le oxidized habonolo tse kang tšepe e sa hloekang, li-alloys tsa aluminium le li-alloys tsa titanium, tse kang lisebelisoa tsa sefofane, likepe tsa khatello le lisebelisoa tsa bongaka.
Lintlha tsa bohlokoa tsa ts'ebetso:
Khetho ea Tungsten Electrode: Sebelisa li-electrode tsa tungsten tse sirelelitsoeng ho tjheseletsa tšepe e sa hloekang le li-electrode tse hloekileng tsa tungsten bakeng sa lialloi tsa aluminium tse chesellang. Fetola bophara ba li-electrode tsa tungsten ho ea ka hona joale (mohlala, 2.4mm tungsten electrode bakeng sa 100-150A hona joale). Laola bolelele ba katoloso ea elektrode ea tungsten ho 2-5mm ho qoba ho kopana le terata ea ho tlatsa, e ka bakang ho khathala ha elektrode ea tungsten.
Taolo ea Khase: Fetola phallo ea argon ho ea ka botenya ba workpiece: 8-10L / min bakeng sa lipoleiti tse tšesaane (≤3mm) le 12-15L / min bakeng sa lipoleiti tse teteaneng (> 5mm). Eketsa nako ea ts'ireletso ea argon ka metsotsoana e 3-5 ha u emisa arc ho thibela oxidation e phahameng ea mocheso oa weld.
5mm). Eketsa nako ea ts'ireletso ea argon ka metsotsoana e 3-5 ha u emisa arc ho thibela oxidation e phahameng ea mocheso oa weld.
Filler Wire Technique: Eketsa terata ea ho tlatsa ho tloha ka pele ho letamo le qhibilihisitsoeng, ho qoba ho kopana ka kotloloho le arc. Laola lebelo la welding ka 5-10cm/min ho netefatsa fusion e felletseng ea letamo le qhibilihisitsoeng le ho qoba khaello ea liphoso tsa fusion.
2. CO₂ Gas Shielded Welding (MIG/MAG Welding): "Setsebi se Phahameng ka ho Fetisisa" bakeng sa Tlhahiso ea Boima
CO₂ khase e sirelelitsoeng welding e sebelisa CO₂ kapa khase e tsoakiloeng ea CO₂ le argon e le mokhoa o sireletsang, ka ho fepa ka terata ka boiketsetso. E na le ts'ebetso e phahameng ea ho chesella (makhetlo a 2-3 ho feta a SMAW) le theko e tlase, e e etsang hore e tšoanelehe bakeng sa tlhahiso e kholo ea tšepe e nang le khabone e tlase le tšepe e nang le alloy e tlase, joalo ka 'mele ea likoloi, mekotla ea lisebelisoa tsa lapeng le tlhahiso ea lijana.
Lintlha tsa bohlokoa tsa ts'ebetso:
Matching parameter: Bapisa ka ho hlaka motlakase le motlakase (mohlala, 22-24V bakeng sa 150A hajoale). Laola bolelele ba terata ho 10-15mm (hoo e ka bang makhetlo a 5-10 bophara ba terata); katoloso e telele haholo e ka baka spatter e feteletseng, athe e khuts'oane haholo e ka chesa molomo.
Welding Angle: Sebelisa mokhoa oa ho tjheseletsa ka ho le letshehadi (ho suthisa toche ho tloha ho le letona ho ya ho le letshehadi). Boloka angle ea 15-25 ° pakeng tsa toche ea welding le workpiece ho netefatsa tšireletso e feletseng ea letamo le entsoeng ka khase. Sebelisa tšireletso ea moea ha lebelo la moea le feta 2m/s ho thibela khase e sireletsang hore e se ke ea fefoloa, e ka bakang porosity.
