1. Mehlala ea tšebeliso
1) Boto ea ho kopanya
Lilemong tsa bo-1960, Khampani ea Toyota Motor e ile ea qala ho amohela theknoloji e se nang letho e entsoeng ka tšubuhlellano. Ke ho hokahanya maqephe a mabeli kapa ho feta hammoho ka ho tjheseletsa ebe o a hatakela. Lipampiri tsena li ka ba le botenya bo fapaneng, thepa le thepa. Ka lebaka la litlhoko tse ntseng li eketseha tsa ts'ebetso ea koloi le mesebetsi e kang ho boloka matla, ts'ireletso ea tikoloho, ts'ireletso ea ho khanna, joalo-joalo, theknoloji ea li-welding ea tailor e hohetse tlhokomelo e eketsehileng. Ho tjheseletsa poleiti ho ka sebelisa welding, flash butt welding,laser tjheseletsa, hydrogen arc welding, joalo-joalo Hona joale,laser tjheseletsae sebelisoa haholo-holo lipatlisisong tsa kantle ho naha le tlhahiso ea likheo tse entsoeng ka seriloeng.
Ka ho bapisa liphetho tsa tlhahlobo le lipalo, liphetho li lumellana hantle, ho netefatsa ho nepahala ha mohlala oa mohloli oa mocheso. Bophara ba seam oa weld tlas'a mekhahlelo e fapaneng ea ts'ebetso e ne e baloa mme butle-butle ea ntlafatsoa. Qetellong, karo-karolelano ea matla a 2: 1 e ile ea amoheloa, maballo a mabeli a ile a hlophisoa ka mokhoa o ts'oanang, lebone le leholo la matla le ne le le bohareng ba seketsoana sa weld, 'me lebone le lenyenyane la matla le ne le le holim'a poleiti e teteaneng. E ka atleha ho fokotsa bophara ba weld. Ha libalaka tse peli li le likhato tse 45 ho tloha ho tse ling. Ha li hlophisitsoe, sefate se sebetsa holim'a poleiti e teteaneng le poleiti e tšesaane ka ho latellana. Ka lebaka la phokotso ea bophara ba seketsoana sa mocheso o sebetsang hantle, bophara ba weld bo boetse bo fokotseha.
2) Litšepe tsa aluminium tse sa tšoaneng
Thuto ea morao-rao e etsa liqeto tse latelang: (1) Ha tekanyo ea matla a marang-rang e ntse e eketseha, botenya ba motsoako oa intermetallic sebakeng se le seng sa boemo ba sebopeho sa weld / aluminium alloy se fokotseha butle-butle, 'me kabo e fetoha kamehla. Ha RS=2, botenya ba sebopeho sa IMC lera bo pakeng tsa 5-10 microns. Bolelele ba mahala ba "nale-joaloka" IMC bo pakeng tsa 23 microns. Ha RS = 0.67, botenya ba sebopeho sa IMC lera bo ka tlase ho li-microns tse 5, 'me bolelele bo boholo ba "nale-joaloka" IMC ke 5,6 microns. Botenya ba motsoako oa intermetallic bo fokotsehile haholo.
(2)Ha laser e tšoanang ea li-beam e sebelisoa bakeng sa ho tjheseletsa, IMC ho sehokelo sa weld/aluminium alloy ha e tloaelehe haholoanyane. Botenya ba lera la IMC ho sehokelo sa weld/aluminium alloy haufi le tšepe/aluminium alloy joint interface bo botenya, ka botenya bo boholo ba 23.7 microns. . Ha karo-karolelano ea matla a beam e ntse e eketseha, ha RS = 1.50, botenya ba IMC lera ho weld / aluminium alloy interface e ntse e le kholo ho feta botenya ba motsoako oa intermetallic sebakeng se le seng sa serial dual beam.
3. Aluminium-lithium motsoako o nang le sebopeho sa T
Mabapi le thepa ea mochini ea manonyeletso a aluminium a 2A97 a aluminium alloy, bafuputsi ba ile ba ithuta ka "microhardness", thepa e thata le mokhathala. Liphetho tsa liteko li bonts'a hore: sebaka sa weld sa lenonyeletso la laser welded ea 2A97-T3 / T4 aluminium alloy e nolofalitsoe haholo. Coefficient e pota-potile 0.6, e leng haholo-holo e amanang le ho qhibiliha le bothata bo latelang ba pula ea mohato o matlafatsang; matla a coefficient ea 2A97-T4 aluminium alloy joint welded by IPGYLR-6000 fiber laser e ka fihla ho 0.8, empa polasetiki e tlaase, ha IPGYLS-4000 fiber.laser tjheseletsaMatla a matla a laser welded 2A97-T3 alloy alloy joints ke hoo e ka bang 0.6; likoli pore ke tšimoloho ea mapetsong mokhathala ka 2A97-T3 aluminium motsoako ka laser welded manonyeletso.
Ka mokhoa oa synchronous, ho latela li-crystal morphologies tse fapaneng, FZ e entsoe haholo ka likristale tse kholo le likristale tse equiaxed. Likristale tse kholo li na le mokhoa oa ho hola oa EQZ oa epitaxial, 'me litataiso tsa tsona tsa kholo li hokahane le mohala oa fusion. Sena se bakoa ke hore bokaholimo ba lijo-thollo tsa EQZ ke karoloana ea nucleation e lokiselitsoeng, 'me ho chesa mocheso ka tsela ena ho potlakile ka ho fetisisa. Ka hona, axis ea mantlha ea crystallographic ea mola oa fusion e otlolohileng e hola ka mokhoa o ikhethileng mme mahlakore a thibetsoe. Ha likristale tsa columnar li ntse li hōla ho ea bohareng ba weld, liphetoho tsa sebopeho sa morphology 'me li-columnar dendrites lia thehoa. Bohareng ba weld, mocheso oa letamo le qhibilihisitsoeng o phahame, lebelo la ho qhala mocheso le tšoana ka mahlakoreng 'ohle,' me lijo-thollo li hōla ka ho lekana ka mahlakoreng 'ohle, li etsa li-dendrite tse lekanang. Ha motsoako oa mantlha oa crystallographic oa li-dendrite tse lekantsoeng o le hantle o tobane le sefofane sa mohlala, lithollo tse hlakileng tse kang lipalesa li ka bonoa mohatong oa metallographic. Holim'a moo, angoa ke supercooling ea likarolo tsa selehae sebakeng weld, equiaxed e ntle-grained lihlopha hangata hlaha sebakeng welded seam ea synchronous mode T-shaped lenonyello, le morpholoji lijo-thollo ka equiaxed khabelo-grained sehlopha se fapane ho tloha. mokhoa oa lijo-thollo oa EQZ. Ponahalo e tšoanang. Hobane mokhoa oa ho futhumatsa oa mokhoa o fapaneng oa TSTB-LW o fapane le oa mokhoa oa synchronous TSTB-LW, ho na le phapang e totobetseng ea macromorphology le microstructure morphology. The heterogeneous mode TSTB-LW T-shaped joint e bile le lipotoloho tse peli tsa mocheso, tse bontšang litšobotsi tse peli tse qhibilihisitsoeng tsa letamo. Ho na le mohala o hlakileng oa bobeli oa fusion ka har'a weld, 'me letamo le qhibilihisitsoeng le entsoeng ka tjheseletsa ea mocheso oa mocheso le nyane. Ka mokhoa o fapaneng oa ts'ebetso ea TSTB-LW, tjheseletsa e tebileng ea ho kenella e angoa ke mokhoa oa ho futhumatsa oa welding ea mocheso oa mocheso. Li-columnar dendrites le equiaxed dendrites tse haufi le mohala oa bobeli oa fusion li na le meeli e fokolang ea li-subgrain 'me li fetoha likristale tsa columnar kapa tsa cellular, e leng se bontšang hore Mokhoa oa ho futhumatsa oa mocheso oa mocheso oa mocheso o na le phello ea phekolo ea mocheso ho li-welds tse tebileng tsa ho kenella. 'Me boholo ba lijo-thollo tsa dendrites bohareng ba thermally conductive weld ke 2-5 microns, e nyenyane haholo ho feta boholo ba lijo-thollo tsa dendrites bohareng ba tjheseletsa e tebileng ea ho kenella (5-10 microns). Sena se amana haholo le ho futhumala ho hoholo ha li-welds ka mahlakore ka bobeli. Mocheso o amana le sekhahla se latelang sa ho pholisa.
3) Molao-motheo oa tjheseletsa ea phofo ea laser e habeli-beam
4)Matla a kopantsoeng a solder a phahameng
Tekong ea li-welding tsa laser powder deposition tse peli, kaha maballo a mabeli a laser a arotsoe ka mahlakoreng a mabeli a terata ea borokho, mefuta e mengata ea laser le substrate e kholo ho feta ea beam laser powder deposition welding, 'me manonyeletso a solder a hlahisoang a eme ho terata ea borokho. Tsela ea terata e batla e le telele. Setšoantšo sa 3.6 se bonts'a manonyeletso a solder a fumanoeng ka beam e le 'ngoe le beam e habeli ea laser powder deposition welding. Nakong ea ts'ebetso ea ho cheselletsa, ebang ke marako a mabelilaser tjheseletsamokgoa kapa leballo le le lenglaser tjheseletsamokhoa, letamo le itseng le qhibilihisitsoeng le thehoa holim'a thepa ea motheo ka ho tsamaisa mocheso. Ka tsela ena, tšepe e entsoeng ka tšepe e entsoeng ka tšepe e qhibilihisitsoeng ka letamong le qhibilihisitsoeng e ka theha maqhama a metallurgical le phofo e qhibilihisitsoeng, kahoo e finyella welding. Ha o sebelisa laser e habeli-beam bakeng sa welding, tšebelisano lipakeng tsa lebone la laser le thepa ea motheo ke tšebelisano lipakeng tsa libaka tsa ts'ebetso ea maballo a mabeli a laser, ke hore, tšebelisano lipakeng tsa matamo a mabeli a qhibilihisitsoeng a entsoeng ke laser holim'a thepa. . Ka tsela ena, sephetho se secha fusion Sebaka sena se seholo ho feta sa lebone le le lenglaser tjheseletsa, kahoo manonyeletso a solder a fumanoang ka marako a mabelilaser tjheseletsali matla hofeta lehlaka le le lenglaser tjheseletsa.
2. High solderability le pheta-pheta
Ka lebaleng le le lenglaser tjheseletsateko, kaha setsi sa sebaka se tsepamisitsoeng sa laser se sebetsa ka kotloloho ho terata e nyane ea borokho, mohala oa borokho o na le litlhoko tse phahameng haholo bakeng salaser tjheseletsamekhoa ea ts'ebetso, joalo ka kabo ea matla a matla a laser e sa lekaneng le botenya bo sa lekaneng ba alloy powder. Sena se tla lebisa ho robeheng ha terata nakong ea ts'ebetso ea tjheseletsa esita le ho etsa hore terata ea borokho e be mouoane ka kotloloho. Ka mokhoa oa welding oa laser oa double-beam, kaha litsi tse tsepamisitsoeng tsa maballo a mabeli a laser ha li sebetse ka kotloloho holim'a lithapo tsa borokho tse nyane, litlhoko tse thata bakeng sa liparamente tsa ts'ebetso ea laser welding ea lithapo tsa borokho lia fokotseha, 'me ts'ebetso ea weldability le ts'ebetso ea borokho e ea fokotseha. ho pheta-pheta li ntlafalitsoe haholo. .
Nako ea poso: Oct-17-2023
