Melemo le Mefokolo ea Laser Welding ea Aluminium Alloy
Ha laser welding aluminium alloy, joalo ka ha ho chesetsoa ha poleiti ea tšepe, ho tla hlahisoa li-pores le mapetsong a mangata nakong ea ts'ebetso ea welding, e tla ama boleng ba welding.Aluminium element e na le matla a tlase a ionization, botsitso bo fokolang ba tjheseletsa, hape e tla baka ho khaotsa ho chesoa.Ntle le mokhoa o phahameng oa ho cheselletsa mocheso, aluminium oxide le aluminium nitride li tla hlahisoa ts'ebetsong eohle, e leng se bakang tšilafalo ho tikoloho.
Leha ho le joalo, aluminium motsoako oa poleiti holim 'a ka bentšitsoeng pele tjheseletsa ho eketsa monya matla a laser;Khase ea inert e tla sebelisoa nakong ea ho cheselletsa ho thibela masoba a moea.
Laser arc hybrid welding ea aluminium alloy e rarollotse mathata a matla a laser welding, ho kenngoa ha beam ea laser holim'a alloy ea aluminium le boleng ba monyako oa ho kenella ka hare.Ke e 'ngoe ea lits'ebetso tse ts'episang ka ho fetesisa tsa aluminium alloy.Hajoale, ts'ebetso ha e e-so holile ebile e mothating oa lipatlisiso le boithuto.
Bothata ba ho tjheseletsa laser bo fapane bakeng sa lisebelisoa tse fapaneng tsa aluminium.The bao e seng mocheso kalafo matlafatsoa aluminium le aluminium motsoako 1000 letoto la lihlooho tse, 3000 letoto la lihlooho tse le 5000 letoto ba le weldability molemo;4000 letoto motsoako o na le tlaase haholo crack kutlo;Bakeng sa 5000 letoto motsoako, ha ω Ha (Mg) = 2%, motsoako o hlahisa mapetsong.Ka keketseho ea dikahare tsa magnesium, ts'ebetso ea welding e ntlafatsoa, empa ductility le ho hanyetsa kutu hoa fokola;2000 series, 6000 series le 7000 series alloys li na le tšekamelo e kholo ea ho phatloha ho chesang, sebopeho se fokolang sa weld, le phokotso e kholo ea bothata ba botsofali ba post weld.
Ka hona, bakeng sa tjheseletsa ea laser ea alloy alloy, hoa hlokahala ho nka mehato e nepahetseng ea ts'ebetso le ho khetha ka nepo mekhoa le lits'ebetso tsa welding ho fumana litholoana tse ntle tsa welding.Pele ho tjheseletsa, ho phekola holim'a thepa, ho laola mekhoa ea ho tjheseletsa le ho fetola sebopeho sa welding kaofela ke mekhoa e sebetsang.
Khetho ea li-parameter tsa welding
Matla a laser 3KW.
· Lebelo la tjheseletsa la Laser: 4m/min.Lebelo la welding le itšetlehile ka matla a matla.Ha matla a matla a phahame, lebelo la ho cheseletsa le potlakile.
· Ha poleiti e entsoe ka masenke (joalo ka 0.8mm bakeng sa poleiti e ka ntle ea lebota le 0.75mm bakeng sa sekoahelo se ka ntle sa sekoahelo), sebaka sa kopano se laoloa ke setsi, ka kakaretso 0.05 ~ 0.20mm.Ha weld e ka tlase ho 0,15 mm, mouoane oa zinki o ke ke oa tlosoa lekhalo le lehlakoreng, empa o tlosoa holim'a weld, e leng bonolo ho hlahisa mefokolo ea porosity;Ha bophara ba weld bo le boholo ho feta 0.15 mm, tšepe e qhibilihisitsoeng e ke ke ea tlatsa lekhalo ka ho feletseng, e leng se bakang matla a sa lekaneng.Ha botenya ba weld bo tšoana le ba poleiti, thepa ea mochine ke eona e ntle ka ho fetisisa, 'me bophara ba weld bo itšetlehile ka bophara ba ho tsepamisa maikutlo;Botebo ba weld bo itšetlehile ka matla a matla, lebelo la welding le bophara ba ho tsepamisa maikutlo.
· Khase e sireletsang ke argon, phallo ke 25L / min, 'me khatello ea ho sebetsa ke 0.15 ~ 0.20MPa.
· Focus bophara 0.6 mm.
· Boemo ba ho tsepamisa maikutlo: ha botenya ba poleiti bo le 1mm, ho tsepamisitsoe maikutlo feela holim'a sebaka se ka holimo, 'me boemo ba ho tsepamisa maikutlo bo itšetlehile ka sebōpeho sa khoune.
Nako ea poso: Jan-04-2023