Ultrasonic karfe waldi an gano bazata a cikin 1830s. A wancan lokacin, lokacin da aka ƙara na'urar walda na tabo na yanzu a cikin gwajin jijjiga na ultrasonic, an gano cewa ana iya walda shi ba tare da halin yanzu ba, don haka an samar da fasahar walda mai sanyi na ultrasonic karfe. Ko da yake an gano walda na ultrasonic tun da farko, ya zuwa yanzu, tsarin aikinsa bai bayyana ba tukuna. Ya yi kama da walƙiyar gogayya, amma akwai bambanci. Ultrasonic waldi lokaci ne sosai guntu da kuma yawan zafin jiki ne m fiye da recrystallization; shi ma ya sha bamban da waldar matsi, domin matsin da ake yi ya fi karami fiye da walda. An yi imani da cewa a farkon mataki na ultrasonic waldi tsari, da oxide a kan karfe surface ne tangentially vibrated, da protruding part na m surface samar da maimaita microwelding da lalata tafiyar matakai don ƙara lamba yankin da kuma ƙara yawan zafin jiki na waldi zone High, filastik nakasawa faruwa a dubawa na weldment. Ta wannan hanyar, lokacin da matsi na lamba yana kusa da juna zuwa nisa inda ƙarfin atomic zai iya aiki, an kafa haɗin gwiwa na solder. Idan lokacin waldi ya yi tsayi da yawa, ko girman igiyoyin ultrasonic ya yi girma, ƙarfin walda zai ragu, ko ma ya lalace.
Features na ultrasonic karfe waldi
Halayen ultrasonic karfe waldi ne: babu bukatar juyi da kuma waje dumama, babu nakasawa saboda zafi, babu saura danniya, da kuma low bukatun ga pre-welding magani a kan surface na weldment. Ba kawai irin wannan karafa ba har ma da nau'ikan karafa iri-iri ana iya walda su. Za'a iya haɗa zanen gado na bakin ciki ko filament zuwa faranti mai kauri. Ultrasonic waldi yana da ƙarancin kuzari fiye da walƙiya na yanzu, kuma galibi ana amfani dashi don walda hanyoyin transistor ko haɗaɗɗun da'irori. Idan aka yi amfani da shi wajen yin walda na magunguna da abubuwan fashewa, zai iya guje wa waldar gama-gari daga gurɓatar magunguna saboda narkar da abubuwa, kuma ba zai fashe ba saboda zafi da sauransu.
