Ma'anar Lalacewar Fasa: Fasa a cikin walda yana nufin ɗigon ƙarfe da aka zubar daga narkakkar tafkin yayin aikin walda.Wadannan ɗigon ruwa na iya faɗuwa a saman kewayen aiki, haifar da rashin daidaituwa da rashin daidaituwa a saman, kuma yana iya haifar da asarar narkakkar ingancin tafkin, haifar da haƙora, wuraren fashewa, da sauran lahani akan farfajiyar walda waɗanda ke shafar kayan injin walda. .
Fasa a cikin walda yana nufin narkakkar ɗigon ƙarfe da aka fitar daga cikin ruwan narkakkar yayin aikin walda.Wadannan ɗigon ruwa na iya faɗuwa a saman kewayen aiki, haifar da rashin daidaituwa da rashin daidaituwa a saman, kuma yana iya haifar da asarar narkakkar ingancin tafkin, haifar da haƙora, wuraren fashewa, da sauran lahani akan farfajiyar walda waɗanda ke shafar kayan injin walda. .
Rarraba Fasa:
Ƙananan splashes: Solidification droplets samuwa a gefen weld dinka da kuma a saman kayan, yafi rinjayar bayyanar kuma ba shi da tasiri akan aikin;Gabaɗaya, iyaka don bambancewa shine cewa ɗigon ruwa bai kai kashi 20% na faɗin ɗinkin kabu ba;
Large splatter: Akwai ingancin hasara, bayyana a matsayin dents, fashewa maki, undercuts, da dai sauransu a kan saman weld dinki, wanda zai iya haifar da m danniya da iri, shafi yi na weld kabu.Babban abin da aka fi mayar da hankali shine akan waɗannan nau'ikan lahani.
Tsarin faruwar fashewa:
Fasa yana bayyana a matsayin allurar narkakkar karfe a cikin ruwan narkakkar a cikin wani shugabanci wajen daura da ruwan walda saboda babban hanzari.Ana iya ganin wannan a fili a cikin hoton da ke ƙasa, inda ginshiƙin ruwa ya tashi daga narkewar walda kuma ya bazu cikin ɗigon ruwa, yana yin splashes.
Fashewar abin da ya faru
Laser waldi ya kasu kashi thermal watsin da zurfin shigar waldi.
Waldawar thermal conductivity kusan babu abin da ya faru na spatter: Thermal conductivity walda ya shafi canja wurin zafi daga saman kayan zuwa cikin gida, ba tare da kusan wani spatter da aka samar yayin aiwatarwa ba.Tsarin ba ya haɗa da ƙafewar ƙarfe mai tsanani ko halayen ƙarfe na jiki.
Walda mai zurfi shine babban yanayin inda splashing ke faruwa: Zurfin shigar waldi ya haɗa da isar Laser kai tsaye zuwa cikin kayan, canja wurin zafi zuwa kayan ta hanyar ramukan maɓalli, kuma yanayin tsari yana da ƙarfi, yana mai da shi babban yanayin inda splashing ke faruwa.
Kamar yadda aka nuna a cikin wannan adadi na sama, wasu malaman suna amfani da daukar hoto mai sauri tare da gilashin haske mai zafi don lura da yanayin motsi na maɓalli yayin waldawar laser.Ana iya gano cewa Laser da gaske ya bugi bangon gaban ramin maɓalli, yana tura ruwan zuwa ƙasa, ya tsallake rijiyar maɓalli ya kai wutsiyar narkakken tafkin.Matsayin da ake karɓar Laser a cikin maɓalli ba a daidaita shi ba, kuma laser yana cikin yanayin shayarwar Fresnel a cikin maɓalli.A haƙiƙa, yanayi ne na refractions da yawa da sha, yana riƙe da wanzuwar ruwan tafki na narkakkar.Matsayin refraction laser yayin kowane tsari yana canzawa tare da kusurwar bangon ramin maɓalli, yana haifar da ramin maɓalli ya kasance cikin yanayin motsi mai jujjuyawa.Matsayin iska mai haskakawa na Laser yana narkewa, yana ƙafewa, ana jujjuya shi da ƙarfi, kuma yana lalacewa, don haka jijjiga peristaltic yana motsawa gaba.
Kwatankwacin da aka ambata a sama yana amfani da gilashin bayyanannen zafin jiki, wanda a zahiri yayi daidai da ra'ayi na yanki na narkakken tafkin.Bayan haka, yanayin kwararar tafkin narkakkar ya bambanta da ainihin halin da ake ciki.Don haka, wasu masana sun yi amfani da fasahar daskarewa cikin sauri.A lokacin aikin walda, narkakken tafkin yana daskarar da sauri don samun yanayin nan take a cikin ramin maɓalli.Ana iya gani a fili cewa Laser yana buga bangon gaba na maɓalli, yana yin mataki.Laser yana aiki akan wannan tsagi na mataki, yana tura narkakkar tafkin don kwararowa ƙasa, yana cike gibin maɓalli yayin motsi na gaba na Laser, kuma ta haka ne ke samun madaidaicin madaidaicin madaidaicin zane na kwarara cikin maɓalli na ainihin narkakken tafkin.Kamar yadda aka nuna a daidai adadi, da karfe recoil matsin lamba samu ta Laser ablation na ruwa karfe korar da ruwa narkakkar pool zuwa kewaye bango na gaba.Hoton maɓalli yana matsawa zuwa jelar ruwan narkakkar, yana hawa sama kamar maɓuɓɓugar ruwa daga baya kuma yana tasiri saman tafkin ruwan wutsiya.A lokaci guda, saboda tashin hankali na saman (ƙananan yanayin zafin jiki, mafi girman tasirin), ƙarfin ƙarfe na ruwa a cikin tafkin wutsiyar wutsiya yana jan shi ta hanyar tashin hankali don matsawa zuwa gefen tafkin narkakkar, yana ci gaba da ƙarfafawa. .Karfe na ruwa wanda za'a iya ƙarfafawa a nan gaba yana kewayawa zuwa wutsiya na ramin maɓalli, da sauransu.
Jadawalin tsari na ramin maɓalli na Laser zurfin shigar waldi: A: Alƙawarin walda;B: Laser katako;C: Maɓalli;D: Karfe tururi, plasma;E: Gas mai kariya;F: Maɓalli na gaba bango (pre melting nika);G: Adaidaita sahu na narkakkar abu ta hanyar ramin maɓalli;H: Narke pool solidification dubawa;I: Hanyar gangarowar tafkin narkakkar.
Tsarin hulɗar tsakanin Laser da kayan aiki: Laser yana aiki a saman kayan abu, yana haifar da ablation mai tsanani.An fara zafi da kayan abu, narke, kuma a kwashe.A lokacin tsananin ƙafewar, tururin ƙarfe yana motsawa zuwa sama don baiwa narkakkar tafkin matsi na koma baya, yana haifar da rami mai maɓalli.Laser yana shiga cikin maɓalli kuma yana jurewa da yawa watsi da matakai na sha, yana haifar da ci gaba da samar da tururin ƙarfe da ke kula da maɓalli;Laser ya fi yin aiki a bangon gaban ramin maɓalli, kuma evaporation yafi faruwa a bangon gaban ramin maɓalli.Matsi na koma baya yana tura karfen ruwa daga bangon gaban ramin maɓalli don matsawa ramin maɓalli zuwa wutsiya na narkakken tafkin.Ruwan da ke motsawa cikin babban gudu a kusa da ramin maɓalli zai yi tasiri ga narkakkar tafkin zuwa sama, yana samar da raƙuman ruwa.Sa'an nan kuma, yana motsa shi ta hanyar tashin hankali, yana motsawa zuwa gefen kuma yana ƙarfafawa a cikin irin wannan zagayowar.Fashewa yakan faru ne a gefen buɗewar maɓalli, kuma ƙarfen ruwa a bangon gaba zai tsallake rami mai sauri da sauri kuma ya yi tasiri a matsayin wurin narkar da bangon baya.
Lokacin aikawa: Maris 29-2024
