I-Technical News｜Ingxoxo Ngobuchwepheshe Be-Brazing Ye-Aluminium Heat Sink

Abstract

Ama-radiator ahlangabezane nezizukulwane ezintathu zokuthuthuka, okungama-radiator ekhopha, ama-radiator enziwe nge-aluminium nama-aluminium brazed radiators.Kuze kube manje, i-aluminium brazing radiator isiphenduke inkambiso yezikhathi, futhi i-aluminium brazing iwubuchwepheshe obusha bokujoyina embonini yokukhiqiza ye-aluminium radiator.Lesi sihloko sidingida ikakhulukazi izimiso eziyisisekelo kanye nokugeleza kwenqubo evamile yalolu buchwepheshe obusafufusa be-aluminium brazing.

Amagama angukhiye:i-aluminium brazing radiator;irediyetha;inqubo ye-aluminium brazing

Umbhali:Qing Rujiao

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

1. Izinzuzo kanye nokubi kwe-aluminium brazing

I-Brazing ingenye yezindlela ezintathu zokushisela ze-fusion welding, i-pressure welding, kanye ne-brazing.I-aluminium brazing isebenzisa i-solder yensimbi enephuzu lokuncibilika eliphansi kunalelo lensimbi yokushisela.Shisisa i-solder kanye ne-weldment ize ibe ngaphansi kwezinga lokushisa elincibilikayo le-weldment futhi libe ngaphezu kwezinga lokushisa elincibilikayo le-solder.Kuyindlela yokusebenzisa i-solder ye-liquid ukumanzisa insimbi yokushisela, ukugcwalisa umphetho omncane we-joint futhi ukuheha omunye nomunye ngama-molecule ensimbi esisekelo sensimbi ukuze kufezwe inhloso yokuxhuma i-weldment.

inzuzo:

I-1) Ngaphansi kwezimo ezijwayelekile, i-weldment ngeke incibilike ngesikhathi sokushisa;

2) Izingxenye eziningi noma uhlaka olunezingqimba eziningi kanye nokushiselwa okufakwe isidleke kungenziwa brazed ngesikhathi esisodwa;

3) Ingakwazi ukuqinisa izingxenye ezincane kakhulu nezincane, futhi ingaqinisa izingxenye ezinomehluko omkhulu wokushuba nokushuba;

I-4) Amalunga ahlanganisiwe wezinto ezithile ezithile angahlakazwa futhi aboshwe futhi.

ukushiyeka :

Isibonelo: I-1) Amandla athile okuhlanganisa ama-brazing aphansi kune-fusion welding, ngakho-ke ama-lap joints avame ukusetshenziselwa ukwandisa umthamo wokuthwala;

I-2) Izidingo zezinga lokuhlanza lendawo ehlangene ye-brazing workpiece kanye nekhwalithi yomhlangano we-workpiece iphezulu kakhulu.

2. Isimiso kanye nenqubo ye-aluminium brazing

Umgomo we-aluminium brazing

Ngokuvamile, ngesikhathi sokubhula, kuba nefilimu ye-oxide eminyene ebusweni be-aluminium ne-aluminium alloy, evimbela ukumanzisa nokugeleza kwe-solder encibilikisiwe.Ngakho-ke, ukuze kuzuzwe ukuhlanganiswa okuhle kwe-brazing ye-weldment, lolu ungqimba lwefilimu ye-oxide kufanele lubhujiswe ngaphambi kokushisela.Phakathi nenqubo yokushisa, lapho izinga lokushisa lifinyelela izinga lokushisa elidingekayo le-flux, i-flux iqala ukuncibilika, futhi i-molten flux isakazeka ebusweni be-aluminium ukuze ichithe ifilimu ye-oxide njengoba izinga lokushisa likhuphuka ngokuqhubekayo.Ingxubevange ye-Ai-Si iqala ukuncibilika, futhi igeleze iye esikhaleni ukuze ishiselwe ngokunyakaza kwe-capillary, imanzise futhi inwebeke ukuze yakhe ilunga.

Nakuba izimiso ze-brazing zama-radiator e-aluminium zifana ngokuyisisekelo, zingahlukaniswa zibe i-vacuum brazing, i-air brazing ne-Nocolok.ukubhoboza ngokwenqubo yokubhoda.Okulandelayo ezinye iziqhathaniso ezithile zalezi zinqubo ezintathu brazing.

Phakathi kwezinqubo ezintathu, i-Nocolok.i-brazing iyinqubo eyinhloko yenqubo ye-aluminium radiator brazing.Isizathu sokuthi kungani uNocolok.i-brazing manje ingaba yingxenye emaphakathi yenqubo ye-aluminium radiator brazing ngokuyinhloko ngenxa yekhwalithi enhle yokushisela yalo mkhiqizo.Futhi inezici zokusetshenziswa kwamandla okuphansi, ukusebenza kahle kokukhiqiza okuphezulu, umthelela omncane wemvelo, kanye nokumelana nokugqwala okuqinile.Kuyindlela efanelekile yokubhula.

Nocolok.Inqubo ye-Brazing

Ukuhlanza

Kukhona ukuhlanzwa okuhlukile kwezingxenye kanye nokuhlanzwa kwama-radiator cores.Ngalesi sikhathi, ukulawula izinga lokushisa nokugxila kwe-ejenti yokuhlanza nokugcina izinga lokushisa kanye nokugxila kwe-ejenti yokuhlanza ngenani elifanele kakhulu yizinyathelo ezibalulekile zokuhlanza.Okuhlangenwe nakho okungokoqobo kubonisa ukuthi izinga lokushisa lokuhlanza lika-40°C kuya ku-55°C kanye nokugxiliswa kwe-ejenti yokuhlanza engu-20% kungamanani angcono kakhulu okuhlanza izingxenye zerediyetha ye-aluminium.(Lapha kubhekiselwa kumenzeli wokuhlanza i-aluminium wokuvikela imvelo, inani le-pH: 10; ama-ejenti okuhlanza amamodeli ahlukene noma amazinga e-pH adinga ukuqinisekiswa ngaphambi kokusetshenziswa)

Uma kune-flux eyanele, kungenzeka ukugcoba umshini wokusebenza ngaphandle kokuhlanza, kodwa ukuhlanza kuzoholela enkambisweni ehlangene, enganciphisa inani le-flux esetshenzisiwe futhi ithole umkhiqizo ohlanganisiwe obukeka kahle.Ukuhlanzeka kwe-workpiece kuzophinde kuthinte inani le-flux coating.

I-spray flux

Ukufafaza i-flux ebusweni bezingxenye ze-aluminium kuyinqubo ebalulekile e-Nocolok.Inqubo ye-brazing, ikhwalithi yokufafaza kwe-flux izothinta ngqo ikhwalithi ye-brazing.Ngoba kukhona ifilimu ye-oxide ebusweni be-aluminium.Ifilimu ye-oxide ku-aluminium izovimbela ukumanzisa kwendawo kanye nokugeleza kwefayibha encibilikisiwe.Ifilimu ye-oxide kufanele isuswe noma ibhobozwe ukuze yakhe i-weld.

Indima ye-flux: 1) Ukucekela phansi ifilimu ye-oxide endaweni ye-aluminium;2) Thuthukisa ukumanzisa nokugeleza okubushelelezi kwe-solder;3) Vimbela indawo engaphezulu ekufakweni kabusha kwe-oxidizing phakathi nenqubo yokubhula.Ngemuva kokuqedwa kwe-brazing, i-flux izokwakha ifilimu evikelayo ngokunamathela okuqinile ebusweni bengxenye ye-aluminium.Lolu ungqimba lwefilimu alunawo umthelela omubi ekusebenzeni komkhiqizo, kodwa lungathuthukisa kakhulu ikhono lezingxenye ze-aluminium ukumelana nokugqwala kwangaphandle.

Inani le-flux enamathiselwe: Ngesikhathi senqubo yokubhula, inani le-flux enamathiselwe: ngokuvamile i-5g ye-flux ngemitha yesikwele ngayinye;I-3g ngemitha yesikwele ijwayelekile namuhla.

Indlela yokwengeza i-Flux:

1) Kunezindlela eziningi ezahlukene: ukufutha ngomfutho ophansi, ukuxubha, ukufutha ngomfutho ophakeme, ukucwilisa, ukufutha nge-electrostatic;

2) Indlela ejwayeleke kakhulu yokwengeza i-flux ku-controlled atmosphere brazing (c AB) inqubo yokufafaza kokumiswa;

3) Izakhiwo zomzimba kanye namakhemikhali e-flux zenza ukufafaza okumanzi kube yisinqumo sokuqala;

4) Emhlabeni jikelele, ngokwezibalo: 80% basebenzisa isifutho esimanzi, i-15% isebenzisa isifutho esomile, i-5% ngokukhetha isifutho noma i-pre-coat;

Ukufafaza okumanzi kuseyindlela evamile yokuguquguquka embonini futhi kunikeza imiphumela emihle kakhulu.

Ukomisa

Ukuze uqinisekise ikhwalithi yezingxenye zokubethela, i-workpiece kufanele yomiswe ngokugcwele ngaphambi kokugqamisa ukuze kukhishwe umswakama ekuhlanganiseni okuguquguqukayo.Into ebaluleke kakhulu enqubweni yokomisa ukulawula izinga lokushisa lokumisa kanye nesivinini se-mesh;uma izinga lokushisa liphansi kakhulu noma isivinini se-mesh sishesha kakhulu, umnyombo ngeke womiswe, okuholela ekunciphiseni kwekhwalithi ye-brazing noma i-desoldering.Izinga lokushisa lokumisa ngokuvamile liphakathi kuka-180°C no-250°C.

Ukubhuqa

Izinga lokushisa lendawo ngayinye esigabeni sokubhula, isivinini senetha kanye nomkhathi wesithando somlilo silawula ikhwalithi yokubhula.Ukushisa kwe-brazing kanye nesikhathi sokubhula kuzoba nomthelela oqondile kwikhwalithi yomkhiqizo.Kungakhathaliseki ukuthi izinga lokushisa liphezulu kakhulu noma liphansi kakhulu, lizoba nomthelela omubi emkhiqizweni, njengokunciphisa impilo yesevisi yomkhiqizo, okuholela ekungabini kwamanzi kwe-solder, nokwenza buthaka ukumelana nokukhathala komkhiqizo;ngakho-ke, ukulawula izinga lokushisa kanye nesikhathi sokubhula kuyisihluthulelo senqubo yokukhiqiza.

Umkhathi esithandweni somlilo uyisici esibalulekile esithinta izinga lokushisela.Ukuze uvimbele ukugeleza kanye nezingxenye ze-aluminium ukuthi zifakwe i-oxidized emoyeni, isivinini se-mesh asigcini nje ngokunquma ubude besikhathi sokubhula, kodwa futhi sinquma ukusebenza kahle kokukhiqiza.Lapho umthamo we-radiator core mkhulu, ukuze kutholwe ukushisa okwanele kwendawo ngayinye (indawo yangaphambi kwe-brazing, indawo yokushisa nendawo yokubeka) ngesikhathi senqubo yokubhula.Isivinini senethiwekhi sidinga ukuhamba kancane ukuze izinga lokushisa elingaphezulu likwazi ukufinyelela inani eliphezulu lenqubo.Ngokuphambene nalokho, lapho umthamo we-radiator core encane, isivinini senethiwekhi sidinga ukushesha.

3. isiphetho

Ama-radiator ahlangabezane nezizukulwane ezintathu zokuthuthuka, okungama-radiator ekhopha, ama-radiator enziwe nge-aluminium nama-aluminium brazed radiators.Kuze kube manje, ama-radiator e-aluminium brazed asephenduke inkambiso yezikhathi, ngokuthuthuka okuqhubekayo kanye nenqubekelaphambili yobuchwepheshe, kanye nokuthuthukiswa kwezimoto ezingasindi.Ama-radiators e-aluminium asetshenziswe kabanzi ngenxa yokumelana nokugqwala okuqinile, ukuguquguquka okuhle kokushisa kanye nesisindo esilula.Ngokusetshenziswa okubanzi kwamaradiyetha e-aluminium, ucwaningo ngesimiso sobuchwepheshe bokubrasa nalo luyathuthuka maqondana nokwenza lula kanye nokwehlukahlukana, futhi i-brazing iwubuchwepheshe bokushisela obusafufusa embonini yokukhiqiza ama-radiator e-aluminium.Ingahlukaniswa ngezigaba ezimbili: akukho ukubhula kwe-flux kanye ne-flux brazing.I-traditional flux brazing isebenzisa i-chloride njenge-flux ukucekela phansi ifilimu ye-oxide endaweni ye-aluminium.Kodwa-ke, ukusetshenziswa kwe-chloride flux kuzoletha izinkinga ezingase zibe nokugqwala.Kuze kube manje, inkampani ye-aluminium ithuthukise i-flux engagqwali ebizwa ngokuthi i-Nocolok.indlela.Nocolok.I-Brazing iyindlela yentuthuko yesikhathi esizayo, kodwa i-Nocolok.I-Brazing nayo inemikhawulo ethile.Kusukela eNocolok.i-flux ayincibiliki emanzini, kunzima ukugqoka i-flux futhi idinga ukomiswa.Ngesikhathi esifanayo, i-fluoride flux ingasabela nge-magnesium, ekhawulela ukusetshenziswa kwezinto ze-aluminium.Izinga lokushisa le-fluoride brazing liphezulu kakhulu.Ngakho-ke, i-Nocolok.indlela isadinga ukuthuthukiswa.

【izinkomba】

[1] Wu Yuchang, Kang Hui, Qu Ping.Ucwaningo Ngohlelo Lochwepheshe Lwenqubo Ye-Aluminium Alloy Brazing [J].Umshini Wokushisela Kagesi, 2009.

[2] Gu Haiyun.Ubuchwepheshe Obusha Be-Aluminium Brazed Radiator [J].Umsebenzi Wemishini, 2010.

[3] Feng Tao, Lou Songnian, Yang Shanglei, Li Yajiang.Ucwaningo ngokusebenza kwe-vacuum brazing kanye ne-microstructure yerediyetha ye-aluminium [J].I-Pressure Vessel, 2011.

[4] Yu Honghua.Inqubo ye-Brazing kanye nemishini esithandweni somoya serediyetha ye-aluminium.I-Electronic Technology, 2009.

ukuzihlangula

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