Labaran Fasaha｜Tattaunawa akan Fasahar Brazing na Aluminum Heat nutse

Abtract

Radiators sun sami ci gaba na ƙarni uku, wato tagulla radiators, aluminum ƙirƙira radiators da aluminum brazed radiators.Ya zuwa yanzu, aluminum brazing radiator ya zama yanayin zamani, kuma aluminum brazing sabuwar fasaha ce ta haɗin gwiwa a masana'antar masana'anta na aluminum radiator.Wannan labarin yafi tattauna mahimman ƙa'idodi da ƙa'idodin tsarin gaba ɗaya na wannan fasahar brazing ta aluminum.

Mabuɗin kalmomi:aluminum brazing radiator;radiator;aluminum brazing tsari

Marubuci:Qing Rujiao

Naúrar:Nanning Baling Technology Co., Ltd. Nanning, Guangxi

1. Abũbuwan amfãni da rashin amfani na aluminum brazing

Brazing yana ɗaya daga cikin hanyoyin walda guda uku na haɗa walda, walda matsi, da brazing.Aluminum brazing yana amfani da solder ɗin ƙarfe tare da wurin narkewa ƙasa da na ƙarfen walda.Zazzage mai siyar da walƙiya har sai ya kasance ƙasa da yanayin narkewar walda kuma sama da yanayin narkewar mai siyar.Hanya ce ta yin amfani da ruwa mai siyar da ruwa don jika ƙarfe na walda, cika bakin bakin ciki na haɗin gwiwa tare da jan hankalin juna da ƙwayoyin ƙarfe na ƙarfen tushe don cimma manufar haɗa walda.

fa'ida:

1) A karkashin yanayi na al'ada, ba za a narke weldment a lokacin brazing;

2) Matsakaicin sassa ko tsarin multilayer da welding na gida ana iya yin brazed a lokaci ɗaya;

3) Yana iya jujjuya sassa masu sirara da sirara, kuma yana iya jujjuya sassan da manyan bambance-bambance a cikin kauri da kauri;

4) Za'a iya wargaza gidajen haɗin gwiwa na wasu takamaiman kayan kuma a sake murƙushe su.

kasawa:

Misali: 1) Ƙarfin ƙayyadaddun ƙayyadaddun kayan aikin brazing yana ƙasa da na fusion waldi, don haka ana amfani da haɗin gwiwa sau da yawa don ƙara ƙarfin ɗaukar nauyi;

2) Abubuwan da ake buƙata don digiri na tsaftacewa na haɗin gwiwa na haɗin gwiwa na brazing workpiece da kuma ingancin taro na workpiece suna da girma sosai.

2. Ka'ida da tsari na aluminum brazing

Ka'idar aluminum brazing

Yawancin lokaci, a lokacin brazing, akwai wani fim mai yawa oxide akan saman aluminum da aluminum gami, wanda ke hana jika da kwararar narkakkar solder.Sabili da haka, don cimma kyakkyawan haɗin gwiwa na brazing na weldment, dole ne a lalata wannan Layer na fim din oxide kafin waldawa.A lokacin aikin brazing, lokacin da zafin jiki ya kai yanayin zafin da ake buƙata na juzu'in, ruwan ya fara narke, kuma narkakkar ruwan ya bazu a saman aluminum don narkar da fim ɗin oxide yayin da zafin ya ƙara ƙaruwa.Ai-Si gami ya fara narkewa, kuma yana gudana zuwa ratar da za a yi masa walda ta motsin capillary, jika kuma yana faɗaɗa don samar da haɗin gwiwa.

Kodayake ka'idodin brazing na radiators na aluminum suna kama da asali, ana iya raba su zuwa vacuum brazing, brazing na iska da Nocolok.brazing bisa ga tsarin brazing.Wadannan su ne wasu takamaiman kwatancen waɗannan matakai guda uku na brazing.

Daga cikin matakai guda uku, Nocolok.brazing shine ainihin aiwatar da tsarin brazing na aluminum radiator.Dalilin da yasa Nocolok.brazing na iya zama wani yanki na tsakiya na aikin brazing na aluminium na radiator shine yafi saboda ingancin walda mai kyau na wannan samfur.Kuma yana da halaye na ƙarancin amfani da makamashi, ingantaccen samarwa, ƙaramin tasirin muhalli, da ƙarancin juriya mai ƙarfi.Hanya ce da ta dace da brazing.

Nocolok.Tsarin Brazing

Tsaftacewa

Akwai daban-daban tsaftacewa na sassa da tsaftacewa na radiyo.A wannan lokacin, sarrafa yawan zafin jiki da maida hankali na wakili mai tsaftacewa da kuma kiyaye yawan zafin jiki da kuma maida hankali ga ma'aunin tsaftacewa a mafi mahimmancin mahimmancin matakan tsaftacewa.Kwarewar aiki ta nuna cewa yawan zafin jiki na tsaftacewa daga 40 ° C zuwa 55 ° C da ƙaddamar da wakili mai tsaftacewa na 20% shine mafi kyawun dabi'u don tsaftace sassan radiyo na aluminum.(A nan yana nufin wakili mai tsaftace muhalli na aluminum, ƙimar pH: 10; ana buƙatar tabbatar da ma'aikatan tsaftacewa na nau'i daban-daban ko matakan pH kafin amfani)

Idan akwai isassun juzu'i, yana yiwuwa a yi amfani da kayan aiki ba tare da tsaftacewa ba, amma tsaftacewa zai haifar da ƙarin tsari mai daidaitawa, wanda zai iya rage yawan juzu'in da aka yi amfani da shi kuma ya sami samfurin welded mai kyau.Tsaftar kayan aikin kuma zai shafi adadin juzu'i.

Fesa juyi

Fesa juzu'i a saman sassan aluminum shine muhimmin tsari a Nocolok.Tsarin brazing, ingancin fesa juyi zai shafi ingancin brazing kai tsaye.Domin akwai fim din oxide a saman aluminum.Fim ɗin oxide akan aluminium zai hana jikewar ƙasa da kwararar fiber narkakkar.Dole ne a cire fim ɗin oxide ko a huda shi don samar da walda.

Matsayin juzu'i: 1) Rushe fim ɗin oxide akan saman aluminum;2) Inganta wetting da santsi kwarara na solder;3) Hana saman daga sake yin oxidizing yayin aikin brazing.Bayan an gama brazing, juzu'in zai samar da fim mai kariya tare da mannewa mai ƙarfi a saman ɓangaren aluminum.Wannan Layer na fim m ba shi da wani mummunan tasiri a kan yi na samfurin, amma zai iya ƙwarai inganta ikon aluminum sassa don tsayayya waje lalata.

Adadin juzu'in da aka haɗe: A lokacin aikin brazing, adadin juzu'in da aka haɗe: gabaɗaya 5g na juyi a kowace murabba'in mita;3g a kowace murabba'in mita shima ya zama ruwan dare a zamanin yau.

Hanyar ƙari na Flux:

1) Akwai hanyoyi daban-daban: ƙananan ƙwayar cuta, gogewa, fesa mai ƙarfi, tsomawa, fesa electrostatic;

2) Hanyar da ta fi dacewa don ƙara juzu'i a cikin sarrafa yanayin brazing (c AB) tsari shine feshin dakatarwa;

3) Abubuwan da ke cikin jiki da sinadarai na juye suna yin rigar fesa zaɓi na farko;

4) A kan sikelin duniya, bisa ga ƙididdiga: 80% amfani da rigar fesa, 15% amfani da busassun feshi, 5% zaɓin fesa ko riga-kafi;

Fesa rigar har yanzu ita ce hanyar da ta fi dacewa don yawo a cikin masana'antu kuma yana ba da sakamako mai kyau.

bushewa

Don tabbatar da ingancin sassa na brazing, aikin aikin dole ne a bushe gabaɗaya kafin a yi amfani da shi don cire danshi daga murfin juyi.Abu mafi mahimmanci a cikin tsarin bushewa shine sarrafa zafin bushewa da saurin raga;idan yanayin zafi ya yi ƙasa sosai ko kuma saurin raga ya yi sauri, ba za a bushe ainihin tushen ba, wanda zai haifar da raguwar ingancin brazing ko lalata.Yawan zafin jiki na bushewa yana tsakanin 180 ° C da 250 ° C.

Brazing

Zazzabi na kowane yanki a cikin sashin brazing, saurin gidan yanar gizo da yanayin tanderun brazing suna sarrafa ingancin brazing.Yanayin zafin jiki da lokacin brazing zasu yi tasiri kai tsaye akan ingancin samfurin.Ko da kuwa yanayin zafi ya yi yawa ko ƙasa da ƙasa, zai yi mummunan tasiri a kan samfurin, kamar rage rayuwar sabis na samfurin, haifar da rashin ruwa na mai siyar, da raunana juriya na gajiyar samfurin;don haka, sarrafa zafin jiki da lokacin brazing shine mabuɗin tsarin samarwa.

Yanayin da ke cikin tanderun brazing muhimmin abu ne da ke shafar ƙimar walda.Don hana juzu'i da sassan aluminum daga iskar oxidized, saurin raga ba wai kawai ya ƙayyade tsawon lokacin brazing ba, har ma yana ƙayyade ingancin samarwa.Lokacin da girma na babban radiyo ya girma, don samun isasshen zafi ga kowane yanki (yankin pre-brazing, yankin dumama da yankin brazing) yayin aikin brazing.Gudun hanyar sadarwar yana buƙatar zama a hankali don yanayin zafin jiki zai iya kaiwa ga mafi girman ƙimar tsari.Akasin haka, lokacin da ƙarar ɗigon radiyo ya ƙanƙanta, saurin hanyar sadarwar yana buƙatar zama mai sauri.

3. ƙarshe

Radiators sun sami ci gaba na ƙarni uku, wato tagulla radiators, aluminum ƙirƙira radiators da aluminum brazed radiators.Ya zuwa yanzu, radiators brazed aluminum sun zama yanayin zamani, tare da ci gaba da ci gaba da ci gaban fasaha, da haɓakar motoci marasa nauyi.Aluminum radiators an yi amfani da ko'ina saboda da karfi lalata juriya, da kyau thermal conductivity da haske nauyi.Tare da faffadan aikace-aikacen radiators na aluminum, bincike kan ka'idar fasahar brazing kuma yana haɓaka zuwa sauƙaƙewa da haɓakawa, kuma brazing shine fasahar walda mai tasowa a cikin masana'antar masana'anta na radiators na aluminum.Ana iya raba shi zuwa kashi biyu: babu jujjuyawar brazing da jujjuyawar brazing.Gargajiya juyi brazing yana amfani da chloride azaman juyi don lalata fim ɗin oxide akan saman aluminum.Duk da haka, yin amfani da chloride flux zai kawo yiwuwar lalata matsalolin.Don haka, kamfanin aluminum ya samar da wani nau'i mai laushi wanda ba shi da lahani mai suna Nocolok.hanya.Nocolok.Brazing shine yanayin ci gaban gaba, amma Nocolok.Brazing shima yana da wasu iyakoki.Tun Nocolok.ruwa ba ya narkewa a cikin ruwa, yana da wahala a rufe ruwa kuma yana buƙatar bushewa.A lokaci guda, ƙwayar fluoride na iya amsawa tare da magnesium, wanda ke iyakance aikace-aikacen kayan aluminum.Fluoride flux brazing zafin jiki yayi yawa.Saboda haka, da Nocolok.hanya har yanzu yana buƙatar ingantawa.

【 ambato】

[1] Wu Yuchang, Kang Hui, Qu Ping.Bincike akan Tsarin Kwararru na Tsarin Aluminum Alloy Brazing Process [J].Injin Welding Electric, 2009.

[2] Gu Haiyun.Sabuwar Fasaha ta Aluminum Brazed Radiator [J].Ma'aikacin Injiniya, 2010.

[3] Feng Tao, Lou Songnian, Yang Shanglei, Li Yajiang.Bincike a kan aikin brazing na injin da kuma microstructure na aluminum radiator [J].Jirgin Ruwa, 2011.

[4] Yu Honghua.Tsarin brazing da kayan aiki a cikin tanderun iska don radiator na aluminum.Fasahar Lantarki, 2009.

disclaimer

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