Cov ua rau thiab cov kev daws teeb meem rau qhov tshwm sim ntawm pores thaum laser vuam
1. hom porosity
Porosity hauv laser vuam feem ntau ua rau peb cov thawj cov ntaub ntawv me me, thiab cov kab mob fusion} weld deg . porosity, ua kom pom kev sib txawv ntawm weld, feem ntau pom hauv cov kab hlau tower, feem ntau pom hauv cov kab hlau tower, feem ntau pom hauv cov kab hlau tower, feem ntau pom hauv cov kab hlau tower, feem ntau pom hauv Weld Weld ntu {}}
2. Cov laj thawj tseem ceeb thiab kho kev ntsuas
Kev thaiv cov roj teeb
Kev them nyiaj ntawm cov roj ntsha yog ib qho kev ua yeeb yam ntau dua li ntawm cov roj ntsha (xws li cov pa roj ntsha ua rau muaj cov pa roj av)}} Argon (99. 999%), Txhim Kho Cov Roj Hmab Zoo Li Qub (E}! Kev tiv thaiv txhim kho.
Cov khoom siv cov khoom sib kis
Roj, roj, oxide txheej, lossis txheej txheem dog dig tuaj yeem ua kom tiav cov khoom sib txawv ntawm weld part} 907 degree, tsim porosity .}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} {-200 degree) txo cov vaporization siv .
Cov Qauv Vuam Tsis Txawv
Lub zog loj heev yuav ua rau cov neeg mus ncig ua si, thaum tsis txaus ntseeg kuj tseem ua rau lub luag haujlwm nrawm dua, thiab cov pa npuas tsis tuaj yeem dim; qeeb heev, thiab ntau dua kev nthuav dav dav lub pas dej yaj,}} ramp-up ntawm weld pib tuaj yeem txo qis qhov tsis yooj yim .
Keyhole tsis muaj peev xwm nyob rau hauv tob-nkag Welds
Nyob rau hauv high-hwj chim laser vuam, cov keyhoce tsim los ntawm laser ablation) yuav daws cov tswv yim uas tsis suav nrog (e}}}}}} 4mm) lossis Qhia cov thawv ntim cov hlau (e {{{9} g {}}}}}, ER4043 Aluminium hlau, uas nqus cov hydrogen). Beam oscillation (50Hz, 1mm amplitude) txhawb cov hlau zoo dua thiab roj khiav dim.
Ib puag ncig cov khoom siv ib puag ncig
Cov av noo cov av noo los ntawm dej vapor confosity hauv hygroscopiae zoo li txhuas thiab magnesium {}<40%) and pre-drying materials (120°C for 1–2 hours) are effective countermeasures. Material composition also matters: aluminum's hydrogen solubility drops sharply during solidification, while sulfur/phosphorus in stainless steel forms low-melting compounds that trap gas. Using low-impurity filler metals (e.g., 5083 aluminum) or grain-refining additives (yttrium/zirconium) can improve results.
3.} Nrhiav tau thiab kho
Pre-weld material analysis (spectroscopy for O/H/S content) and real-time process monitoring (high-speed cameras to observe melt pool dynamics) help prevent porosity. Post-weld inspection via X-ray radiography detects sub-surface voids (>0 {{. 1mm) {}}}}} rau kev kho vaj tse laser laser no feem ntau ua tiav, muab cov oxides tau tshem tawm.
{{0 {}} cov txheej txheem siab heev
Hauv cov ntawv thov tseem ceeb, nqus tsev laser vuam (} {% {}} tawm cov thev naus laus zis zoo li ntshav spectroscopy (e {{{. g}!
Tag
Porosity tswj xav tau txoj kev tiv thaiv kev ua haujlwm - kev tiv thaiv kev nyiam, thiab ib puag ncig los tau ua kom tau raws li cov kev ntsuas nruj (e {} g .,<0.5% for automotive welds). Documenting procedures in a Welding Procedure Specification (WPS) ensures consistency across production runs.
-- Ncaws tshav laser laser Camila Wang