Abstract：
ObjectiveDeep-spaceexplorationisimportanttoinnovatespacetechnologyandexplorespaceresources Acollimatorisakeycomponentofadeep-spaceprobe however producingahighspatialresolutioncollimatorischallengingCurrentlythedeep-spaceexplorationcollimatorgridismostlycomposedofframes Castingorlaseradditivemanufacturingisusedtobuildtheinnergridstructure whichisquitethick aswellastheentireoutsidewall Thegridframeisthenusedtocreatethemicrogrooves Finallythecollimatorgridisformedbyinsertingtungstenortantalumfoilsintothemicrogrooves Furthermore collimatorgridmanufacturingtechnologiesincludeLIGAandelectricaldischargewire-cuttingTheseapproachesmayresultinthickwalls limitingthecollimator????sdutyratioandefficiencyorresultinalongermanufacturingperiod highercost andasmallergridheight ThehardX-raymodulationtelescopesatelliteHXMTwhichChinadevelopedindependentlyisusedasanexampletopresentourresearchprogressonlasermicroweldingtechnologyandequipmentdevelopmentforthecross-scalecollimatorgrid whichisfundedbytheNationalKeyResearchandDevelopmentProgram MethodsThelaserspotweldingexperimentwasconductedfirsttoidentifytheweldingparametersbasedonthestructuralfeaturesoftheHXMTcollimator Thegriddeformationfiniteelementanalysiswasthenperformedtoprovidelaserweldingguidance Finallylaserweldingequipmentwasdesignedandvalidatedtomeetthegridcelllaserweldingrequirements ResultsandDiscussionsTheHXMTcollimatoriscomposedofanaluminumalloyframewithmanytantalumgridcellsplacedintoit Laserspotweldingjunctionpointsformedbytwoorthogonalarraysoftantalumfoilsareusedtocreatethegridcell Thefabricationoftantalumfoils gridcellassemblyandweldingandgridcellinsertionintothecollimatorframeareallpartofthemanufacturingprocessFig3Forlaserweldinggridcells anIPGYLM-150 1500-QCWquasicontinuousfiberlaserandaself-developedthree-dimensional3Ddynamicfocusinggalvanometerareemployed Withabeamdiameterof40 mu m laserpowerof180--220W andpulsewidthof6--10ms awell-formedweldingspotiscreatedFig4TheresultsofthefiniteelementanalysisshowthatinstabilitydeformationiscommonduringthelaserweldingofthecollimatorgridcellFig5Toaddressthisissue anintegratedsetcombiningtantalumfoilassemblyandcollimatorgridwelding insertionisdevelopedFig6Theassemblyerrorandweldingdeformationarewell-controlled resultinginthecollimatinghole????sdimensionsaccuracybeingwithi
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Source ：
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
ISSN： 0258-7025
Year： 2022
Issue： 10
Volume： 49
Cited Count：
WoS CC Cited Count： 0
SCOPUS Cited Count：
ESI Highly Cited Papers on the List： 0 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 3
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