Laser Vuam Ntawm Cov Hlau Stainless: Kev Ntsuam Xyuas Kev Ntsuas Ntawm Cov Teeb Meem Deformation
Hauv kev lag luam tsim khoom lag luam, stainless hlau yog dav siv thoob plaws ntau yam kev lag luam xws li khoom noj khoom haus, kev kho mob, thiab kev tsim kho vim nws zoo heev corrosion kuj, siab zog, thiab zoo nkauj thov. Raws li cov cuab yeej vuam siab heev, lub laser welder muaj qhov zoo xws li kev ua haujlwm siab thiab kev ua haujlwm zoo, ua rau nws muaj kev xaiv nrov rau stainless hlau vuam. Txawm li cas los xij, puas laser vuam ntawm stainless hlau ua rau deformation?
Los ntawm kev xav theoretical, laser welders inherently muaj qhov zoo ntawm kev txo qis deformation. Lawv siv siab-zog-nrawm laser beams raws li qhov chaw tshav kub, instantly melting stainless hlau hauv zos los tsim ib tug weld. Piv nrog rau cov txheej txheem welding ib txwm muaj, laser welding muaj cov cua kub tsis tshua muaj hluav taws xob, nrog cov cua kub ceev thiab cua txias. Lub tshav kub- thaj tsam cuam tshuam yog feem ntau tswj nyob rau hauv ib qho me me, feem ntau tsuas yog ob peb feem kaum ntawm ib millimeters. Qhov no ua rau muaj kev ntxhov siab tsawg ntawm cov khoom siv thaum vuam, theoretically txo qhov muaj feem ntawm deformation.
Txawm li cas los xij, cov teeb meem deformation tseem tuaj yeem tshwm sim thaum lub sijhawm vuam tiag tiag. Thaum cov hlau tsis huv yog welded, cov cua sov hauv cheeb tsam ua rau nthuav dav, thaum nyob ib puag ncig cov cheeb tsam uas tsis muaj cua sov lossis muaj qhov kub qis dua txwv qhov kev nthuav dav no, yog li tsim cov thermal stress hauv cov khoom. Thaum welding tiav thiab txo qhov kub thiab txias, cov khoom contraction tshwm sim. Yog tias thermal stress tsis tuaj yeem tso tawm, deformation yuav tshwm sim, feem ntau tshwm sim raws li nthwv dej deformation lossis angular deformation. Ntau yam cuam tshuam rau deformation. Hais txog cov khoom siv, cov qib sib txawv ntawm cov hlau tsis muaj steel muaj qhov sib txawv ntawm lub cev xws li thermal expansion coefficients thiab thermal conductivity. Thicker daim hlau nqus cua sov ntau dua, ua rau muaj qhov tshwm sim ntawm deformation. Vuam txheej txheem parameter kuj tseem ceeb heev. Lub zog laser ntau dhau los lossis qeeb vuam ceev tuaj yeem ua rau cua sov kom mloog zoo heev, ua rau muaj kev pheej hmoo ntawm deformation. Tsis tas li ntawd, kev sib dhos qhov tseeb ntawm lub workpiece thiab tsim thiab siv cov khoom siv yuav tsum tsis txhob saib xyuas. Kev sib dhos loj, kev sib tsoo hnyav, lossis cov khoom siv tsis zoo tuaj yeem ua rau muaj kev ntxhov siab ntxiv thaum vuam, ua rau deformation ntau dua. Txawm li cas los xij, deformation tuaj yeem tswj tau los ntawm ntau lub tswv yim. Precisely kho cov txheej txheem tsis los txiav txim siab ua ke raws li cov khoom thiab workpiece tej yam kev mob; optimizing workpiece los ua ke kom paub meej qhov tseeb; tsim cov khoom tsim nyog los muab cov kev txwv ruaj khov; thiab siv preheating los yog tom qab- txoj kev kho cua sov tuaj yeem txo cov kev ntxhov siab thermal thiab cov kev ntxhov siab uas seem. Txawm hais tias deformation tuaj yeem ua tau thaum laser vuam stainless hlau, nws tuaj yeem tswj tau nyob rau hauv qhov kev txwv tsis pub dhau los ntawm kev ntsuas kev tshawb fawb kom tau raws li qhov siab - vuam yuav tsum tau zoo.