Zitsulo zamtengo wapatali makamaka zimatanthauza Au, Ag, PD, Pt ndi zipangizo zina, zomwe zimakhala ndi mphamvu yabwino yoyendetsera magetsi, mphamvu yoyendetsera magetsi, mphamvu yolimbana ndi dzimbiri komanso kutentha kwambiri kosungunuka. Zimagwiritsidwa ntchito kwambiri mu zipangizo zamagetsi popanga zida zamagetsi zotseguka ndi zotsekedwa.
(1) Makhalidwe a brazing monga zipangizo zolumikizirana, zitsulo zamtengo wapatali zimakhala ndi makhalidwe ofanana ndi malo ang'onoang'ono olumikizirana, zomwe zimafuna kuti chitsulo cholumikiziranacho chikhale ndi kukana kwabwino kwa kukhudza, mphamvu yayikulu, kukana kwa okosijeni, komanso kupirira kuukira kwa arc, koma sichisintha mawonekedwe a zipangizo zolumikizirana ndi mphamvu zamagetsi za zigawo. Popeza malo olumikizirana ndi ochepa, kusefukira kwa solder sikuloledwa, ndipo magawo a njira yolumikizirana ayenera kulamulidwa mosamala.
Njira zambiri zotenthetsera zingagwiritsidwe ntchito kupangira zitsulo zamtengo wapatali ndi zolumikizirana nazo zachitsulo chamtengo wapatali. Kupangira malawi nthawi zambiri kumagwiritsidwa ntchito pazinthu zazikulu zolumikizirana; Kupangira kwa induction ndikoyenera kupanga zinthu zambiri. Kupangira kukana kumatha kuchitika ndi makina wamba olumikizira kukana, koma nthawi yochepa yamagetsi komanso yayitali iyenera kusankhidwa. Chophimba cha kaboni chingagwiritsidwe ntchito ngati ma electrode. Pakufunika kupangira zida zambiri zolumikizirana nthawi imodzi kapena kupangira zolumikizira zingapo pagawo limodzi, kupangira ng'anjo kungagwiritsidwe ntchito. Zitsulo zabwino zikapangidwa ndi njira zodziwika bwino mumlengalenga, ubwino wa zolumikizira umakhala woipa, pomwe kupangira vacuum kumatha kupeza zolumikizira zapamwamba, ndipo mawonekedwe a zipangizozo sadzakhudzidwa.
(2) Golide wopaka ndi aloyi ake amasankhidwa ngati zitsulo zodzaza brazing. Zitsulo zodzaza zochokera ku siliva ndi mkuwa zimagwiritsidwa ntchito makamaka polumikizana, zomwe sizimangotsimikizira kuti cholumikizira cha brazing chikuyenda bwino, komanso zimakhala zosavuta kunyowetsa. Ngati zofunikira pakuwongolera brazing zitha kukwaniritsidwa, chitsulo chodzaza brazing chokhala ndi Ni, PD, Pt ndi zinthu zina zingagwiritsidwe ntchito, ndipo chitsulo chodzaza brazing chokhala ndi nickel yopaka, aloyi ya diamondi ndi kukana kwabwino kwa okosijeni chingagwiritsidwenso ntchito. Ngati chitsulo chodzaza brazing cha Ag Cu Ti chasankhidwa, kutentha kwa brazing sikuyenera kupitirira 1000 ℃
Siliva oxide yomwe imapangidwa pamwamba pa siliva si yokhazikika ndipo ndi yosavuta kuigwiritsa ntchito. Kusokedwa kwa siliva kungagwiritse ntchito chitsulo chodzaza ndi tin lead chokhala ndi zinc chloride aqueous solution kapena rosin ngati flux. Poyikira, siliva wodzaza chitsulo nthawi zambiri amagwiritsidwa ntchito, ndipo borax, boric acid kapena zosakaniza zake zimagwiritsidwa ntchito ngati brazing flux. Poyikira vacuum brazing siliva ndi siliva alloy contacts, siliva wodzaza brazing based brazing filler metals amagwiritsidwa ntchito kwambiri, monga b-ag61culn, b-ag59cu5n, b-ag72cu, ndi zina zotero.
Pa zolumikizirana za palladium zozungulira, zolumikizira zochokera ku golide ndi nickel zomwe zimakhala zosavuta kupanga mayankho olimba, kapena zolumikizira zochokera ku siliva, zamkuwa kapena manganese zingagwiritsidwe ntchito. Siliva imagwiritsidwa ntchito kwambiri polumikizirana ndi aloyi ya platinamu ndi platinamu. Zolumikizira zochokera ku mkuwa, golide kapena palladium zozungulira. Kusankha chitsulo chodzaza cha b-an70pt30 sikungosintha mtundu wa platinamu, komanso kumawongolera kutentha kwa cholumikizira cha brazing ndikuwonjezera mphamvu ndi kuuma kwa cholumikizira cha brazing. Ngati cholumikizira cha platinamu chikuyenera kulumikizidwa mwachindunji pa aloyi ya kovar, solder ya b-ti49cu49be2 ikhoza kusankhidwa. Pa zolumikizira za platinamu zomwe kutentha kogwira ntchito sikupitirira 400 ℃ mu sing'anga yosawononga, solder ya mkuwa yopanda mpweya yokhala ndi mtengo wotsika komanso magwiridwe antchito abwino ziyenera kusankhidwa.
(3) Musanagwiritse ntchito brazing, cholumikizira, makamaka cholumikizira, chiyenera kuyang'aniridwa. Zolumikizira zomwe zatulutsidwa kuchokera pa mbale yopyapyala kapena yodulidwa kuchokera pa mzere siziyenera kusokonekera chifukwa cha kubowola ndi kudula. Malo olumikizira omwe amapangidwa ndi kukanikiza pang'ono komanso kukanikiza bwino ayenera kukhala olunjika kuti atsimikizire kuti akhudzana bwino ndi malo osalala a chothandizira. Malo opindika a gawo lomwe liyenera kulumikizidwa kapena pamwamba pa radius iliyonse ayenera kukhala ofanana kuti atsimikizire kuti capillary ikugwira ntchito bwino panthawi yolumikizira.
Musanagwiritse ntchito zinthu zosiyanasiyana zolumikizirana, filimu ya oxide pamwamba pa weldment iyenera kuchotsedwa pogwiritsa ntchito mankhwala kapena makina, ndipo pamwamba pa weldment iyenera kutsukidwa mosamala ndi mafuta kapena mowa kuti muchotse mafuta, mafuta, fumbi ndi dothi zomwe zimalepheretsa kunyowa ndi kuyenda.
Pa zolumikizira zazing'ono, guluu uyenera kugwiritsidwa ntchito poika zinthu pamalo oyamba kuti usasunthe panthawi yokonza zojambulira ng'anjo ndi kuyika zinthu zodzaza zitsulo, ndipo guluu wogwiritsidwa ntchito sayenera kuwononga brazing. Pa zolumikizira zazikulu kapena kukhudzana kwapadera, kusonkhanitsa ndi kuika zinthu kuyenera kuchitika kudzera mu cholumikizira ndi boss kapena groove kuti cholumikiziracho chikhale chokhazikika.
Chifukwa cha kutentha kwabwino kwa zinthu zamtengo wapatali, kutentha kuyenera kutsimikiziridwa malinga ndi mtundu wa zinthuzo. Pa nthawi yozizira, kutentha kuyenera kuyendetsedwa bwino kuti chivundikiro cha brazing chikhale chofanana; Njira yotenthetsera iyenera kulola kuti ziwalo zolumikizidwa zifike kutentha kwa brazing nthawi yomweyo. Pazinthu zazing'ono zamtengo wapatali zolumikizana ndi zitsulo, kutentha mwachindunji kuyenera kupewedwa ndipo ziwalo zina zitha kugwiritsidwa ntchito potenthetsera. Kupanikizika kwina kuyenera kugwiritsidwa ntchito pa cholumikizira kuti chigwirizanecho chikhale chokhazikika pamene chosungunula chikusungunuka ndikuyenda. Pofuna kusunga kulimba kwa chothandizira cholumikizira kapena chothandizira, kupopera kuyenera kupewedwa. Kutentha kumatha kuchepetsedwa pamalo ozungulira brazing, monga kusintha malo panthawi yopangira moto, kupangira induction kapena kupangira resistance. Kuphatikiza apo, kuti solder isasungunuke zitsulo zamtengo wapatali, njira monga kuwongolera kuchuluka kwa solder, kupewa kutentha kwambiri, kuchepetsa nthawi yopangira brazing pa kutentha kwa brazing, ndikupangitsa kutentha kugawika mofanana zitha kuchitidwa.
Nthawi yotumizira: Juni-13-2022