Zitsulo zamtengo wapatali makamaka zimatanthawuza Au, Ag, PD, Pt ndi zipangizo zina, zomwe zimakhala ndi ma conductivity abwino, matenthedwe matenthedwe, kukana kwa dzimbiri ndi kutentha kwakukulu kosungunuka.Amagwiritsidwa ntchito kwambiri pazida zamagetsi kuti apange zigawo zotseguka ndi zotsekedwa.
(1) Mawonekedwe a brazing ngati zida zolumikizirana, zitsulo zamtengo wapatali zimakhala ndi mawonekedwe ofananirako ang'onoang'ono akuwotcha, zomwe zimafuna kuti chitsulo chamsokonezo chimakhala ndi kukana kwabwino, mphamvu yayikulu, kukana kwa okosijeni, ndipo imatha kupirira kuukira kwa arc, koma sikusintha makhalidwe a zipangizo kukhudzana ndi katundu magetsi zigawo zikuluzikulu.Popeza malo olumikizirana ndi ocheperako, kusefukira kwa solder sikuloledwa, ndipo magawo a brazing ayenera kuyang'aniridwa mosamalitsa.
Njira zambiri zotenthetsera zingagwiritsidwe ntchito pomanga zitsulo zamtengo wapatali ndi zitsulo zamtengo wapatali.Kuwotcha kwamoto nthawi zambiri kumagwiritsidwa ntchito pazinthu zazikulu zolumikizana;Induction brazing ndi yoyenera kupanga zambiri.Kukaniza brazing kumatha kuchitidwa ndi makina owotcherera wamba, koma nthawi yaying'ono komanso yayitali yowotchera iyenera kusankhidwa.Mpweya wa carbon ukhoza kugwiritsidwa ntchito ngati electrode.Pamene kuli koyenera braze chiwerengero chachikulu cha kukhudzana zigawo zikuluzikulu pa nthawi yomweyo kapena braze angapo ojambula pa chigawo chimodzi, ng'anjo braze angagwiritsidwe ntchito.Zitsulo zolemekezeka zikamangirizidwa ndi njira zodziwika bwino m'mlengalenga, mawonekedwe olumikizana ndi otsika, pomwe vacuum brazing imatha kupeza zolumikizira zapamwamba, ndipo zomwe zidazo sizingakhudzidwe.
(2) Golide wonyezimira ndi aloyi yake amasankhidwa ngati zitsulo zopangira zitsulo.Zitsulo zochokera ku siliva komanso zamkuwa zimagwiritsidwa ntchito kwambiri polumikizana, zomwe sizimangotsimikizira kukhazikika kwa mgwirizano wa brazing, komanso ndizosavuta kunyowa.Ngati zofunikira zolumikizirana zitha kukwaniritsidwa, chitsulo chodzaza ndi brazing chokhala ndi Ni, PD, Pt ndi zinthu zina zitha kugwiritsidwa ntchito, ndipo chitsulo chodzaza ndi brazing nickel, aloyi ya diamondi ndi kukana kwa okosijeni wabwino zitha kugwiritsidwanso ntchito.Ngati Ag Cu Ti brazing filler chitsulo chasankhidwa, kutentha kwa brazing sikuyenera kupitirira 1000 ℃.
Silver oxide yomwe imapangidwa pamwamba pa siliva sikhazikika ndipo ndiyosavuta kuyimitsa.Kusungunula kwa siliva kumatha kugwiritsa ntchito chitsulo cha lead filler chokhala ndi zinc chloride aqueous solution kapena rosin ngati flux.Powotcha, zitsulo zodzaza siliva zimagwiritsidwa ntchito nthawi zambiri, ndipo borax, boric acid kapena zosakaniza zake zimagwiritsidwa ntchito ngati brazing flux.Pamene vacuum brazing siliva ndi aloyi aloyi zitsulo, siliva zochokera brazing filler zitsulo amagwiritsidwa ntchito makamaka, monga b-ag61culn, b-ag59cu5n, b-ag72cu, etc.
Pakulumikizana ndi palladium, ma solders opangidwa ndi golide ndi nickel omwe ndi osavuta kupanga mayankho olimba, kapena opangira siliva, opangidwa ndi mkuwa kapena manganese angagwiritsidwe ntchito.Silver base imagwiritsidwa ntchito kwambiri popangira ma platinamu ndi ma aloyi a platinamu.Mkuwa, golide kapena palladium based solder.Kusankha b-an70pt30 brazing filler zitsulo sikungangosintha mtundu wa platinamu, komanso kumapangitsanso bwino kutentha kwa mgwirizano wa brazing ndikuwonjezera mphamvu ndi kuuma kwa olowa.Ngati kukhudzana ndi platinamu kumangiriridwa mwachindunji pa aloyi ya kovar, solder ya b-ti49cu49be2 ikhoza kusankhidwa.Pazolumikizana ndi platinamu ndi kutentha kosapitilira 400 ℃ mu sing'anga yosawononga, solder yamkuwa yopanda okosijeni yokhala ndi mtengo wotsika komanso magwiridwe antchito abwino ndiyofunika.
(3) Musanayambe kuwotcha, kuwotcherera, makamaka msonkhano wolumikizana, uyenera kufufuzidwa.Zolumikizira zomwe zakhomeredwa pa mbale yopyapyala kapena zodulidwa kuchokera pamzere sizidzapunduka chifukwa cha kukhomerera ndi kudula.Pamwamba pa kukhudzana komwe kumapangidwa ndi kukhumudwitsa, kukanikiza bwino ndi kufota kuyenera kukhala kolunjika kuti kuwonetsetse kukhudzana bwino ndi malo apansi a chithandizo.Pamwamba pa mbali yokhotakhota yowotcherera kapena pamwamba pa radius iliyonse iyenera kukhala yosasinthasintha kuti iwonetsetse kuti capillary imagwira ntchito panthawi yowotcha.
Pamaso brazing osiyanasiyana kulankhula, ndi okusayidi filimu pamwamba pa kuwotcherera adzachotsedwa ndi mankhwala kapena makina njira, ndi pamwamba pa kuwotcherera adzakhala mosamala kutsukidwa ndi mafuta kapena mowa kuchotsa mafuta, mafuta, fumbi ndi dothi kuti kulepheretsa wetting. ndi flow.
Kwa ma welds ang'onoang'ono, zomatira zidzagwiritsidwa ntchito poyikirapo kuti zitsimikizire kuti sizingasunthike panthawi yoyendetsera ng'anjo yamoto ndi kulipiritsa zitsulo zodzaza, ndipo zomatira zomwe zimagwiritsidwa ntchito sizingawononge kuwomba.Pakuwotcherera kwakukulu kapena kukhudzana kwapadera, kusonkhana ndi kuyikapo kuyenera kuchitidwa ndi abwana kapena poyambira kuti kuwotchererako kukhale kokhazikika.
Chifukwa cha kutentha kwabwino kwazitsulo zamtengo wapatali zamtengo wapatali, kutentha kumayenera kutsimikiziridwa molingana ndi mtundu wa zinthu.Panthawi yozizira, mlingo uyenera kuyendetsedwa bwino kuti upangitse kupanikizika kwa mgwirizano wa brazing;Njira yotenthetsera imathandizira kuti mbali zowotcherera zifike kutentha kwamoto nthawi yomweyo.Pazigawo zing'onozing'ono zazitsulo zamtengo wapatali, kutentha kwachindunji kuyenera kupewedwa ndipo mbali zina zingagwiritsidwe ntchito powotchera.Kupanikizika kwina kudzagwiritsidwa ntchito pa kukhudzana kuti kukhudzana kukhale kokhazikika pamene solder imasungunuka ndikuyenda.Kuti musunge kukhazikika kwa chithandizo cholumikizirana kapena kuthandizira, annealing iyenera kupewedwa.Kuwotcha kumatha kungokhala pamalo opangira brazing, monga kusintha malo panthawi yowotcha moto, kuyika kwa induction brazing kapena kukana brazing.Kuonjezera apo, pofuna kuteteza solder kuti asasungunuke zitsulo zamtengo wapatali, miyeso monga kulamulira kuchuluka kwa solder, kupeŵa kutentha kwambiri, kuchepetsa nthawi yowotcha pa kutentha kwamoto, ndi kupanga kutentha mofanana kungatengedwe.
Nthawi yotumiza: Jun-13-2022