Brazing The Wosakhwima Mmisiri kwa Precision Kujowina

Brazing simasungunula chitsulo choyambira koma imakwaniritsa kujowina ndikusungunula zitsulo zotsika-zosungunuka kuti zitseke mipata. Imakhala ndi ma welds athyathyathya ndi mapindikidwe ang'onoang'ono, ndikupangitsa kuti ikhale yoyenera kuwotcherera mwatsatanetsatane zida, zida zofananira, ndi zida zovuta. Ndizofunikira kwambiri pazinthu monga zamagetsi, zakuthambo, ndi zida zamankhwala. Malinga ndi malo osungunuka a zitsulo zodzaza ndi brazing, brazing imagawidwa m'magulu awiri: kutsekemera kofewa ndi kutsekemera kolimba.

(I) Soft Brazing: "Micro-Joining" ya Zamagetsi Zamagetsi

Kusungunula kofewa kumagwiritsa ntchito zitsulo zosungunula zomwe zimasungunuka pansi pa 450 ° C. Chitsulo chomwe chimagwiritsidwa ntchito kwambiri ndi tin-lead alloy (pang'onopang'ono chimasinthidwa ndi aloyi wopanda lead). Flux imagwiritsidwa ntchito pakuwotcherera kuti ichotse mafilimu a oxide ndikuchepetsa kupsinjika kwapansi. Ndikoyenera kujowina mwatsatanetsatane zida zamagetsi, matabwa ozungulira, ndi zolumikizira zapaipi yamadzi, zomwe soldering ndiukadaulo waukadaulo wofewa kwambiri.

1. Soldering: The "Basic Luso" kwa Circuit Board kuwotcherera

Mfundo yofunika: Chitsulo chimatenthetsa chogwirira ntchito (kutentha 250-350 ° C), kusungunula waya wa malata wopanda lead (malo osungunuka pafupifupi 227 ° C). Pansi pa kusinthasintha, malata osungunuka amadzaza kusiyana pakati pa zikhomo za chigawo ndi mapepala a bolodi, kupanga mgwirizano wa solder pambuyo pozizira.

Zopangira:

Pre-Welding Cleaning: Gwiritsani ntchito sandpaper kupukuta zikhomo ndi mapepala kuti muchotse zigawo za oxide; pukutani bolodi la dera ndi mowa kuti muchotse madontho amafuta ndikupewa kuzizira kozizira.

Njira Yotenthetsera: Choyamba, bweretsani nsonga yachitsulo cholumikizira kuti igwirizane ndi chogwirira ntchito (mphambano ya pini ndi pad). Mukatenthetsa kwa masekondi 1-2, dyetsani waya wa malata. Pewani kuyatsa waya wa malata mwachindunji, zomwe zingayambitse "kuzizira kozizira" (malata osungunuka amalephera kunyowetsa chogwiriracho).

Solder Joint Control: Kuchuluka kwa waya wa malata ayenera kukhala "wokwanira kudzaza kusiyana popanda kusefukira." Mgwirizano wa solder uyenera kukhala "conical." Musagwedeze chigawocho musanazizire kuti muteteze kusweka kwa solder.

(II) Kuwotcha Kwambiri: "Chitsimikizo Chodalirika" cha Zida Zapamwamba Zapamwamba Zolondola

Kumanga molimba kumagwiritsa ntchito chitsulo chosungunula chokhala ndi malo osungunuka pamwamba pa 450 ° C. Zodzaza ndi brazing zomwe zimagwiritsidwa ntchito nthawi zambiri ndi alloy-zinc alloy (brass brazing filler) ndi alloy-based alloy (silver brazing filler). Imakhala ndi kutentha kwakukulu kowotcherera komanso mphamvu zowotcherera, zomwe zimapangitsa kuti zikhale zoyenera kuwotcherera zida zamphamvu kwambiri monga zida zodulira, zosinthira kutentha, ndi masamba a injini ya aero.

Mfundo Zogwirira Ntchito: Yatsani zitsulo zoyambira musanayambe kuwotcherera (kutentha kwa 300-500 ° C) kuti muwonetsetse kuti zitsulo zodzaza ndi brazing zikuyenda; gwiritsani ntchito flux monga borax ndi boric acid kuchotsa filimu ya okusayidi pazitsulo zazitsulo; chitani mankhwala oziziritsa pang'onopang'ono mutatha kuwotcherera (mwachitsanzo, kuwayika mu bokosi lotsekera) kuti mupewe ming'alu yomwe imabwera chifukwa cha kusiyana kwakukulu kwa kutentha.

(III) Kusankha Strategy and Development Trends of Welding Methods

Poyang'anizana ndi njira zosiyanasiyana zowotcherera, momwe mungasankhire ukadaulo woyenerera malinga ndi zosowa zenizeni ndiye chinsinsi chothandizira kuwongolera bwino komanso kuchita bwino. Panthawi imodzimodziyo, ndi chitukuko cha teknoloji ya mafakitale, teknoloji yowotcherera ikupitanso ku "luntha ndi greenization."

(IV) Zofunika Kwambiri Zosankha Njira Yowotcherera

Makhalidwe a Base Metal: Pazitsulo za carbon low-carbon, patsogolo zimaperekedwa kwa SMAW ndi CO₂ kuwotcherera; kwa chitsulo chosapanga dzimbiri, kuwotcherera kwa TIG ndi kuwotcherera kwa laser kumakondedwa; pazitsulo za aluminiyamu, kuwotcherera kwa AC TIG kumasankhidwa; pazigawo zamagetsi, soldering imagwiritsidwa ntchito.

Zofunika Zamalonda: Pazigawo zolondola (monga mbali zamlengalenga), kuwotcherera kwa laser ndi TIG kumasankhidwa; kwa magawo opangidwa mochuluka.