Laser Welding le Electron Beam Welding: "High-Tech" bakeng sa tlhahiso e phahameng ea boemo bo holimo.

Libakeng tse phahameng tse kang aerospace le microelectronics, welding ea setso ea fusion e thata ho finyella litlhoko tsa ho nepahala le ho kenella ka botebo. Laser welding le electron beam welding li hlahella ka melemo ea tsona ea "high density ea matla, ho nepahala ho phahameng, le deformation e tlaase."

Laser Welding:E sebelisa lebone la laser la matla a phahameng (wavelength 1064nm kapa 10.6μm) le tsepamisitsoeng holim'a sebaka sa mosebetsi. Thempereichara ea hang-hang e ka fihla ho feta 10,000 ° C, e lemoha ho qhibiliha ka potlako le ho kopanya ha tšepe. E na le li-welds tse moqotetsane le libaka tse nyane tse anngoeng ke mocheso, e etsa hore e tšoanelehe bakeng sa ho tjheseletsa likaroloana tse nang le marako a masesaane le likaroloana tse nyane, joalo ka masakaneng a khamera ea smartphone le mahare a enjine ea aero.

Ho cheselletsa Beam ea Elektrone:Sebakeng sa vacuum, sefate sa elektronike se potlakisoa 'me se tsepamisitsoe ho qhomisa mosebetsi. Ka matla a matla a ka holimo ho 10 ^ 6-10 ^ 8 W / cm², e ka finyella welding e tebileng ea ho kenella ka karolo ea 10: 1. E loketse likarolo tse nepahetseng tse nang le mabota a teteaneng joalo ka likarolo tsa nyutlelie le likere tse kholo. Leha ho le joalo, e na le litšenyehelo tse phahameng tsa lisebelisoa 'me e hloka tikoloho ea vacuum, e bakang maemo a fokolang a kopo.

Sebopeho sa Lisebelisoa le Mefuta ea Laser

Sistimi e tloaelehileng ea welding ea laser e kenyelletsa likarolo tse tharo tsa mantlha:

Laser jenereithara: E fetolela matla a motlakase hore e be lebone le kopaneng la laser.

Optical Transmission System: E tataisa le ho tsepamisa mohopolo (mohlala, fiber optics, liipone tse bonahatsang).

Setsi sa Mosebetsi: E kopanya lisebelisoa, taolo ea ho sisinyeha (liroboto / methati e melang), le phano ea khase e sireletsang.

Mekhahlelo e Bohlokoa ea Ts'ebetso le Tataiso ea Ts'ebetso

Taolo ea paramethara e supa ka kotloloho boleng ba weld — esita le ho kheloha ho honyane ho ka baka likoli joalo ka porosity kapa mapetsong:

(1) Tokisetso ea Pele ho Welding

Tlhoekiso ea Lintho: Tlosa oli, sekala sa oxide, kapa lirafa ka ho sebelisa ethanol kapa sandblasting. Bakeng sa lisebelisoa tse phahameng (Al, Cu), libaka tsa pele tsa ho phekola ho fokotsa khanya ea laser.

Maemo a Tsepamisitsoeng: Sebelisa defocus e mpe (tsepa ka tlase ho sebaka sa mosebetsi) bakeng sa ho kenella ka botebo; positive defocus (tsepa kaholimo) bakeng sa maqephe a masesaane ho qoba ho chesoa.

Likopo tsa Indasteri le Lithuto tsa Taba

Ho feto-fetoha ha li-laser welding ho tsamaisa mahlale a macha likarolong tsohle:

(1) Indasteri ea Kaho le Boima

Mehaho ea Litšepe: Litsamaiso tse peli tsa laser-arc hybrid welding weld 20mm+ T-beams ho 1.2m/min, ho fokotsa deformation ka 50%.

Kaho ea Likepe: Lits'ebetso tse tataisoang ke liroboto tse nang le liporo tsa 7th-axis li cheseletsa lipoleiti tse botenya ba 115mm ka tsela e le 'ngoe, ho rarolla phephetso ea "welding e lehlakoreng le le leng, ho etsa mahlakore a mabeli".

(2) Ho Etsa Likoloi

Ho tjheseletsa ka nepo ha likarolo tsa phetisetso ho sebelisa "theknoloji ea taolo ea botsitso ea keyhole" ho fihlela litšepe tse chitja tse se nang sekoli.

Laser tailor-welding ea liphanele tsa 'mele oa koloi e fokotsa palo ea karolo ka 30% le boima ka 15%.

(3) Matla a Tsoetseng Pele le Sefofane

Matla a Nyutlelie: Fiber laser welding ea Ni-28W-6Cr alloy (bakeng sa 850 ° C e qhibilihisitsoeng ka letsoai e qhibilihisitsoeng) e nang le khatello e matla ka ho ntlafatsa paramethara.

Aerospace: Welding ea mahare a enjine ea titanium alloy e nang le sebaka se fokolang se amehang ke mocheso (HAZ) ho boloka matla a lintho tse bonahalang.