Txoj kev tshawb no tshawb xyuas cov txheej txheem kev coj cwj pwm thiab kev hloov pauv cov yam ntxwv hauv aluminium alloy LF-LDED, qhov twg ib daim duab -yim oscillating laser tshav kub qhov chaw tau siv los tsim lub pas dej ua ke thawj zaug thiab tswj qhov dav ntawm pas dej ua ke. GTA tshav kub qhov chaw tau siv los ua ntej- melted lub taub hau ntawm aluminium alloy hlau, ua kua hlau uas tuaj yeem ruaj khov rau hauv lub pas dej molten. Cov teebmeem ntawm qhov sib txawv ntawm qhov cua sov-laser rau kev teeb tsa nyob deb, GTA tam sim no, oscillation amplitude, thiab xaim pub ceev ntawm tus cwj pwm ntawm cov txheej txheem- tau nthuav tawm thiab sib tham. Lub ntsiab lus xaus yog raws li nram no.
【1】The spacing of the heat source is a key parameter for achieving stable LF-LDED deposition. If the heat source spacing is too large (>5 hli), nws yuav ua rau lub sijhawm hloov mus ntev dua rau cov kua txhuas txhuas kom ncav cuag lub pas dej molten, ua rau cov txheej txheem deposition los ua humps. Txawm li cas los xij, kev hloov pauv ntawm qhov kev ncua deb ntawm lub laser thiab cov xaim muaj qhov cuam tshuam me me rau kev ruaj ntseg ntawm cov txheej txheem deposition.
【2】The LF-LDED process has two modes: liquid bridge transition mode and droplet transition mode. The state of wire melting can be divided into semi-melted and fully melted states. When the current is low (I = 30-70A), the wire is in a semi-melted state. The upper part of the wire tip melts into liquid metal while the lower part remains solid, providing stable guidance for the liquid metal and forming a liquid bridge transition. When the current is high (>90A), cov hlau yog melted tag nrho, nrog rau lub ntsis molten tag, tsim ib tug droplet hloov.
【3】 Hauv LF-LDED system, geometric feature tswj lub tswv yim ntawm cov txheej txheem deposition tuaj yeem tswj xyuas lub viav vias amplitude thiab xaim pub ceev, ua tiav kev ywj pheej ywj pheej ntawm txheej dav thiab txheej qhov siab.
【4】 Qhov siab tshaj plaws deposition tus nqi ntawm LF-LDED yog 1.215 kg/h, uas yog 2.9 npaug ntawm O-LDED. Piv nrog rau cov xov hlau ib txwm siv-raws li LDED, LF-LDED tuaj yeem txhim kho laser efficiency, ua tau zoo -efficiency thiab siab - zoo deposition. Txawm li cas los xij, tus nqi tso nyiaj ntawm LF-LDED tseem nyob tom qab ntawm WAAM.
【5】LF-LDED tuaj yeem ua tiav ntau- txheej txheej ntawm aluminium alloys, uas qhia tau tias muaj peev xwm loj hauv kev tsim khoom ntawm txhuas alloy. Txawm li cas los xij, raws li tus naj npawb ntawm cov txheej txheem tso nyiaj nce ntxiv, qhov tsis xws luag xws li txo txheej qhov siab thiab tus Tsov tus tw tawg tshwm nyob rau hauv cov khoom, qhia tau tias cov txheej txheem ntau - txheej txheej txheej txheej txheej txheem no xav tau kev ua kom zoo dua ntxiv.
