Laser vuam yuav revolutionize steel siv
Lub zog thiab kev ua haujlwm tau zoo tau dhau los ua qhov tseem ceeb thiab tsis ntev los no Fraunhofer Lub Tsev Haujlwm rau Cov Khoom Siv thiab Beam Technology IWS tau ua haujlwm nrog nws cov neeg koom tes los tsim lwm txoj hauv kev rau cov qauv hlau uas tseem suav nrog cov khoom siv hauv paus thiab laser kev nyab xeeb. cov ntaub ntawv muaj zog thiab txo qis kev siv hluav taws xob thiab cov nqi, thaum ua kom nrawm nrawm. Piv nrog rau cov txheej txheem vuam ib txwm, cov khoom siv hluav taws xob xav tau rau cov khoom tuaj yeem raug txo kom txog li 80 feem pua. Tsis tas li ntawd, tom qab straightening ntawm cov khoom yog tshem tawm tag nrho ntawm cov txheej txheem. Cov txheej txheem vuam tshiab yuav tsum tau nthuav tawm ntawm Hannover Messe Saib Ua Ntej 2022.
Ntau cov txheej txheem kev tsim kho hauv qee hom hlau. Txawm hais tias nws yog lub nkoj ntim khoom, lub tsheb ciav hlau, tus choj lossis lub tshuab cua tshuab cua, tuaj yeem muaj ntau pua meters ntawm weld seams hauv cov qauv no. Yog li ntawd, yog tias cov txheej txheem kev lag luam xws li cov hlau tshuab hluav taws xob siv los yog siv cov arc submerged, cov teeb meem tshwm sim hauv ib txoj kev los yog lwm qhov: vim qhov tsis muaj zog ntawm arc, feem ntau ntawm lub zog siv tsis tau siv hauv cov txheej txheem vuam tab sis yog ploj mus rau cov khoom nyob rau hauv daim ntawv ntawm tshav kub. Lub zog xav tau rau kev ua tiav tom qab vuam feem ntau zoo ib yam li lub zog xav tau rau cov txheej txheem vuam nws tus kheej. "Cov txheej txheem ntawm lub zog siv zog no tuaj yeem ua rau muaj kev puas tsuaj loj rau cov khoom siv thiab ua rau muaj kev cuam tshuam loj heev ntawm cov qauv, uas tom qab ntawd yuav tsum tau ua haujlwm ncaj qha kim heev." Dr Dirk Dittrich, tus thawj coj ntawm Fraunhofer IWS Laser Beam Vuam Group, hais txog.
Lub laser beam yog nyob rau ntawm qhov sib koom ua ke ntawm ob lub phaj npoo yuav tsum tau welded thiab muab tub lim hlau tso rau hauv pem hauv ntej ntawm nws, ib tug txheej txheem uas tsim ib tug zoo weld.
Muaj zog laser vuam txheej txheem
Ib pawg ntawm cov kws tshawb fawb coj los ntawm Dr. Dittrich tau tsim ib qho kev siv hluav taws xob siv hluav taws xob ua ke nrog cov koom tes ua lag luam ua ib feem ntawm qhov project "VE-MES - Zog Efficient thiab Low Distortion Laser Multipass Narrow Gap Welding". Laser multi-pass nqaim gap vuam siv lub lag luam muaj lub zog siab laser thiab sawv tawm ntawm cov txheej txheem vim nws txo qis ntawm cov txheej txheem thiab qhov loj me me weld seam ntim.Hauv nws daim ntawv tshaj tawm, Dr. .
"Nyob ntawm cov khoom, peb tuaj yeem txo cov khoom siv hluav taws xob rau cov khoom siv thaum lub sij hawm vuam los ntawm 80 feem pua thiab peb tuaj yeem txo cov khoom siv los ntawm 85 feem pua piv rau cov txheej txheem arc ib txwm," Dr Dittrich tau tshaj tawm. Yog li ntawd, peb tuaj yeem txo cov sij hawm tsim khoom thiab cov nqi, ua cov txheej txheem siab zog steel thiab txhim kho qhov sib npaug ntawm CO2 nrog rau tag nrho cov saw hlau ntau lawm. cov qauv tsim nyob rau hauv lub teb chaws Yelemees thiab thoob ntiaj teb, qhov no tuaj yeem ua pov thawj tias muaj txiaj ntsig zoo. " Qhov no yog vim hais tias lub siab siv ntawm lub laser beam xyuas kom meej tias lub zog input yog heev concentrated nyob rau hauv lub vuam taw tes, thaum lub cheeb tsam ntawm lub Cheebtsam tseem tseem txias. Dittrich hais tias "Lub sijhawm vuam kuj tseem txo qis los ntawm 50 mus rau 70 feem pua.
Cov txheej txheem tshiab kuj tseem zoo heev nyob rau hauv cov nqe lus ntawm weld zoo - lub weld seam yog ho thinner thiab cov npoo yuav luag sib npaug, whereas nyob rau hauv cov pa vuam txheej txheem cov seam yog V-puab. "Yog tias laser vuam siv nyob rau hauv cov txheej txheem tsim steel, nws yuav dhau los ua qhov muag tshwj xeeb rau lub tuam txhab German nruab nrab thiab ntxiv dag zog rau nws txoj haujlwm ua lag luam nyob rau hauv lub ntsej muag ntawm kev sib tw thoob ntiaj teb," hais tias Dittrich ntseeg siab. "Peb tab tom muab kev lag luam ib daim ntawv zoo ntawm vuam tshuab uas yuav hloov pauv kev tsim kho steel ua tsaug rau nws cov nqi siv tau zoo thiab cov txheej txheem tsim khoom siv tau zoo.
Hla ntu ntawm cov pob qij txha welded thiab T-kos ua nrog laser MPNG: zoo heev welds tau lees paub ntawm txo nqi thiab kev siv.
Kev kawm xyaum: steel beams rau sab hauv tsev crane siv
Cov kws tshawb fawb Fraunhofer IWS tau qhia txog qhov ua tau zoo ntawm lawv txoj kev txhim kho tshiab uas siv cov piv txwv ntawm kev tsim kho hauv tsev crane. Lawv tau siv cov cuab yeej siv vuam tshiab siv cov cuab yeej tshwj xeeb thiab kev tiv thaiv kab hluav taws xob sib xyaw. Kev sim tsim ntawm plaub-meter-ntev-ntev profile ntawm sab hauv crane seem ua raws li kev sib piv tsim thiab kev tsim cov txheej txheem rau cov khoom sib xyaw ua ke. Cov ntawv thov welds raug tsim: pob qij txha ntawm lub phaj 30 hli thiab tag nrho T-joints (15 hli phaj).
Rau ib-meter-ntev weld, tus nqi ntawm lub phaj nrog lub thickness ntawm 30 hli tuaj yeem raug txo los ntawm 50 feem pua piv rau submerged arc vuam, nrog rau cov txheej txheem txuas ntxiv tom ntej. Rau cov ntawv nyias nyias tsawg dua 20 hli tuab, cov txheej txheem hlau-activated gas welding tseem siv tau thiab cov peev txheej txuag tau ntau dua, txog li 80 feem pua. Rau cov tuam txhab loj, kev txuag nyiaj ntau dua € 100,000 ib xyoos twg tuaj yeem ua tiav los ntawm cov khoom siv vuam tshuab ib leeg. Tsis tas li ntawd, lub laser beam qhov siv tau muaj peev xwm ua tau zoo rau kev txwv cov nqi hluav taws xob vim nws qhov kev ua haujlwm siab (kwv yees li 50 feem pua) thiab cov txheej txheem ua haujlwm zoo (80 feem pua ntawm cov khoom siv hluav taws xob). Nrog rau cov ntaub ntawv pov thawj ntawm kev siv tau, tam sim no txoj kev tuaj yeem txuas mus rau lwm yam kev siv.
IWS cov kws tshawb fawb tau siv cov crane sab hauv tsev ua los ntawm S355J2 cov qauv hlau (4 x 0.75 x 0.5 m) los ua kom pom tias lawv cov txheej txheem laser MPNG welding tuaj yeem txo cov nqi hluav taws xob txog li 80 feem pua. thiab cov khoom siv muab tub lim siv tau txog li 85 feem pua piv rau cov txheej txheem vuam cov txheej txheem.
Lub hauv paus ntsiab lus ntawm laser multi-pass nqaim gap vuam (MPNG)
Thaum cov hlau muab tub lim tau ntxiv, lub laser yog nyob ntawm qhov sib koom ntawm cov npoo ntawm ob daim ntawv yuav tsum tau welded. Lub zog ntawm lub laser beam melts cov npoo ntawm lub workpiece thiab muab tub lim hlau rau ntawm cov hlau, uas tom qab ntawd ua rau qhov sib txawv ntawm ob daim thiab tsim cov vuam zoo. Cov txheej txheem no tuaj yeem siv los txuas cov kev sib koom ua ke hauv kev tsim kho steel. Cov npoo ntawm daim hlau yog cov plasma txiav thiab cov pob qij txha qee zaum muaj qhov khoob ntawm 2 hli dav uas tuaj yeem txhim khu kev ntseeg tau los ntawm cov txheej txheem laser vuam. Thaum welding webs (T-joints) los yog pob tw pob qij txha, cov txheej txheem ua kom cov kev sib koom ua tiav, piv txwv li tias ob qhov chaw tau koom nrog tag nrho cheeb tsam. Hauv kev tsim kho steel, qhov no yog qhov kev txwv, tshwj xeeb tshaj yog thaum siv T-joints.
