Ƙarfe masu daraja galibi suna nufin Au, Ag, PD, Pt da sauran kayan, waɗanda ke da kyakyawan aiki mai kyau, haɓakar thermal, juriya na lalata da zafin narkewa.Ana amfani da su sosai a cikin kayan lantarki don kera abubuwan buɗaɗɗe da rufaffiyar kewaye.
(1) Brazing halaye kamar lamba kayan, daraja karafa da na kowa halaye na kananan brazing yankin, wanda bukatar cewa brazing kabu karfe yana da kyau tasiri juriya, high ƙarfi, wasu hadawan abu da iskar shaka juriya, kuma zai iya jure wa baka harin, amma ba ya canza halaye na kayan tuntuɓar da kayan lantarki na abubuwan da aka gyara.Tunda yankin brazing na lamba ya iyakance, ba a ba da izinin zubar da ruwa ba, kuma ya kamata a sarrafa sigogin tsarin brazing sosai.
Yawancin hanyoyin dumama za a iya amfani da su don murƙushe karafa masu daraja da lambobin ƙarfe masu daraja.Yawancin lokaci ana amfani da brazing na harshen wuta don manyan abubuwan haɗin sadarwa;Induction brazing ya dace da samarwa da yawa.Juriya brazing za a iya yi da talakawa juriya waldi inji, amma karami halin yanzu da kuma tsawon brazing lokaci ya kamata a zaba.Carbon block za a iya amfani da matsayin electrode.Lokacin da ya zama dole don jujjuya adadi mai yawa na abubuwan haɗin haɗin gwiwa a lokaci guda ko ɓata lambobi da yawa akan sashi ɗaya, ana iya amfani da brazing ta tanderu.Lokacin da aka lalata karafa masu daraja ta hanyoyin gama gari a cikin yanayi, ingancin haɗin gwiwa ba shi da kyau, yayin da vacuum brazing zai iya samun haɗin gwiwa mai inganci, kuma kadarorin kayan da kansu ba za su shafa ba.
(2) Zinare mai kauri da gami an zaɓi su azaman ƙarfe mai cike da brazing.Tushen Azurfa da ƙarfe na ƙarfe na ƙarfe ana amfani da su musamman don tuntuɓar, wanda ba wai kawai yana tabbatar da ingancin haɗin gwiwa na brazing ba, har ma yana da sauƙin jika.Idan ana iya biyan buƙatun gudanarwa na haɗin gwiwa, ana iya amfani da ƙarfe na brazing mai ɗauke da Ni, PD, Pt da sauran abubuwa, kuma ana iya amfani da ƙarfe mai cike da brazing tare da brazing nickel, gami da lu'u-lu'u da ingantaccen juriya na iskar shaka.Idan Ag Cu Ti brazing filler karfe aka zaɓi, zafin brazing bazai zama sama da 1000 ℃
Abun oxide na azurfa da aka kafa akan saman azurfa ba shi da kwanciyar hankali kuma yana da sauƙin braze.Siyar da azurfa na iya amfani da ƙarfe mai cike da gubar dalma tare da maganin ruwa na zinc chloride ko rosin azaman juyi.Lokacin brazing, ana amfani da ƙarfe na filler na azurfa sau da yawa, kuma ana amfani da borax, boric acid ko gaurayawan su azaman juzu'i.Lokacin da vacuum brazing azurfa da azurfa gami lambobin sadarwa, azurfa tushen brazing filler karafa ne yafi amfani, kamar b-ag61culn, b-ag59cu5n, b-ag72cu, da dai sauransu.
Domin brazing palladium lambobin sadarwa, zinariya tushen da kuma nickel tushen solders da suke da sauki samar da m mafita, ko azurfa tushen, jan karfe ko manganese tushen solders za a iya amfani da.Ana amfani da tushe na azurfa don yin brazing platinum da lambobin gami na platinum.Tushen jan ƙarfe, tushen zinari ko tushen siyar da palladium.Zaɓin b-an70pt30 brazing filler karfe ba zai iya kawai canza launin platinum ba, har ma da inganta yanayin zafi na haɗin gwiwa na brazing da haɓaka ƙarfi da taurin haɗin gwiwa.Idan tuntuɓar platinum za a yi ta kai tsaye akan kovar alloy, za a iya zaɓar solder b-ti49cu49be2.Don lambobin platinum tare da zafin aiki wanda bai wuce 400 ℃ a cikin matsakaici mara lalata ba, dole ne a fi son siyar da tagulla mai ƙarancin iskar oxygen tare da ƙarancin farashi da kyakkyawan aiki.
(3) Kafin brazing, weldment, musamman tuntuɓar taro, za a duba.Lambobin da aka buga daga farantin bakin ciki ko yanke daga tsiri ba za su lalace ba saboda naushi da yanke.Wurin brazing na lamba da aka kafa ta hanyar bacin rai, latsa mai kyau da ƙirƙira dole ne ya kasance madaidaiciya don tabbatar da kyakkyawar hulɗa tare da lebur ɗin goyon baya.Madaidaicin saman ɓangaren da za a yi wa walda ko saman kowane radius dole ne ya kasance daidai don tabbatar da ingantaccen tasirin capillary yayin brazing.
Kafin brazing na lambobin sadarwa daban-daban, za a cire fim ɗin oxide akan fuskar walƙiya ta hanyar sinadarai ko injiniyoyi, sannan a tsaftace saman walda da man fetur ko barasa don cire mai, mai, ƙura da datti da ke hana jikowa. da kwarara.
Don ƙananan walda, za a yi amfani da mannen don sanyawa don tabbatar da cewa ba zai canza ba yayin aiwatar da cajin tanderu da cajin ƙarfe na filler, kuma abin da ake amfani da shi ba zai haifar da lahani ga brazing ba.Don babban walƙiya ko lamba ta musamman, taro da matsayi dole ne su kasance ta wurin daidaitawa tare da shugaba ko tsagi don yin walda a cikin kwanciyar hankali.
Saboda kyawawan halayen thermal na kayan ƙarfe masu daraja, ƙimar dumama ya kamata a ƙaddara bisa ga nau'in kayan.A lokacin sanyaya, ya kamata a sarrafa ƙimar da kyau don sanya haɗin haɗin gwiwa na brazing uniform;Hanyar dumama za ta ba da damar sassa masu walda don isa ga zafin brazing a lokaci guda.Don ƙananan lambobin ƙarfe masu daraja, ya kamata a guje wa dumama kai tsaye kuma ana iya amfani da wasu sassa don dumama gudanarwa.Za a yi amfani da takamaiman matsi a lamba don daidaita lamba lokacin da mai siyarwar ya narke da gudana.Domin kiyaye ƙaƙƙarfan goyon bayan tuntuɓar ko goyan baya, za a nisantar ɓarna.Za'a iya iyakance dumama zuwa saman saman brazing, kamar daidaita matsayi yayin brazing na harshen wuta, brazing induction ko juriya brazing.Bugu da kari, don hana mai saida narkar da karafa masu daraja, ana iya daukar matakan da suka hada da sarrafa adadin mai, nisantar dumama mai yawa, takaita lokacin da ake yin brazing a yanayin zafi na brazing, da sanya zafi a rarraba daidai gwargwado.
Lokacin aikawa: Juni-13-2022