Iindaba zobuGcisa

Abstract

Iiradiator ziye zafumana izizukulwana ezithathu zophuhliso, ezizezi, iiradiyetha zobhedu, iiradiyetha ezenziwe ngealuminiyam kunye neeradiyetha ezenziwe nge-aluminiyam.Ukuza kuthi ga ngoku, i-radiator ye-aluminium yokubhobhoza iye yaba yindlela yamaxesha, kwaye i-aluminium brazing iteknoloji entsha yokujoyina kwishishini lokuvelisa i-radiator ye-aluminium.Eli nqaku lixubusha ikakhulu imigaqo esisiseko kunye nokuhamba kwenkqubo ngokubanzi yale teknoloji yokuqhafaza kwe-aluminium evelayo.

Amagama angundoqo:iradiyetha yealuminiyam;irediyetha;inkqubo yokuqhola i-aluminium

Umbhali:Qing Rujiao

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

1. Izinto eziluncedo kunye nokungonakali kwe-aluminium brazing

I-Brazing yenye yeendlela ezintathu ze-welding ye-fusion welding, i-pressure welding, kunye ne-brazing.Ukubethelwa kwe-aluminium kusebenzisa i-solder yentsimbi enendawo yokunyibilika engaphantsi kuneyokuntywila kwentsimbi.Fudumeza i-solder kunye ne-weldment ide ibe ngaphantsi kobushushu obunyibilikayo be-weldment kwaye ibe ngaphezu kobushushu obunyibilikayo be-solder.Yindlela yokusebenzisa i-solder ye-liquid ukumanzisa isinyithi se-weldment, ugcwalise i-seam encinci ye-joint kwaye utsale omnye nomnye kunye neemolekyuli zetsimbi zesiseko sesinyithi ukufezekisa injongo yokudibanisa i-weldment.

inzuzo :

1) Ngaphantsi kweemeko eziqhelekileyo, i-weldment ayiyi kuncibilika ngexesha lokutshisa;

I-2) Amacandelo amaninzi okanye isakhiwo se-multi-layer kunye ne-weldments ene-nested inokugqithwa ngexesha elinye;

3) Iyakwazi ukuqhola izinto ezincinci kunye nezincinci, kwaye ikwazi ukubethelela iindawo ezinomahluko omkhulu kubunzima kunye nobukhulu;

I-4) Amalungu adityanisiweyo ezinto ezithile ezithile anokuchithwa kwaye agxininiswe kwakhona.

ukusilela :

Umzekelo: I-1) Amandla athile okudibanisa ama-brazing aphantsi kune-fusion welding, ngoko i-lap joints isoloko isetyenziselwa ukunyusa umthamo wokuthwala;

I-2) Iimfuno zeqondo lokucoca kwendawo edibeneyo ye-brazing workpiece kunye nomgangatho wendibano ye-workpiece iphezulu kakhulu.

2. Umgaqo kunye nenkqubo ye-aluminium brazing

Umgaqo we-aluminium brazing

Ngokuqhelekileyo, ngexesha lokugcoba, kukho ifilimu edibeneyo ye-oxide ebusweni be-aluminium kunye ne-aluminium alloy, ethintela ukumanzisa kunye nokuhamba kwe-solder etyhidiweyo.Ngoko ke, ukuze kuphunyezwe ukudibanisa okulungileyo kwe-weldment, olu luhlu lwefilimu ye-oxide kufuneka lubhujiswe ngaphambi kokuba udibanise.Ngethuba lenkqubo yokutshisa, xa iqondo lokushisa lifikelela kwiqondo lokushisa elifunekayo le-flux, i-flux iqala ukunyibilika, kwaye i-flux etyhidiweyo isasazeka phezu kwe-aluminium ukutshabalalisa ifilimu ye-oxide njengoko ukushisa kuphakama ngakumbi.I-alloy ye-Ai-Si iqala ukunyibilika, kwaye igeleza kwi-gap ukuze idityaniswe ngentshukumo ye-capillary, imanzi kwaye ikhulise ukwenza i-joint.

Nangona imigaqo yokubhobhoza ye-radiator ye-aluminium ifana ngokusisiseko, inokwahlulwa ibe yi-vacuum brazing, i-air brazing kunye ne-Nocolok.ukubrayiza ngokwenkqubo yokubrawuza.Oku kulandelayo lulunye uthelekiso oluthile lwezi nkqubo zintathu zokuqhafaza.

Phakathi kweenkqubo ezintathu, iNocolok.ukubhuqa yinkqubo engundoqo yenkqubo yokubraya iradiyetha ye-aluminium.Isizathu sokuba uNocolok.ukubrashiza ngoku kunokuba yinxalenye engundoqo yenkqubo yokuqholwa kweradiyetha ye-aluminiyam ikakhulu ngenxa yomgangatho olungileyo we-welding yale mveliso.Kwaye ineempawu zokusetyenziswa kwamandla aphantsi, ukusebenza kakuhle kwemveliso, impembelelo encinci yokusingqongileyo, kunye nokumelana nokugqwala okunamandla.Yeyona ndlela ifanelekileyo yokubrawuza.

Nocolok.Inkqubo yeBrazing

Ukucoca

Kukho ukucocwa okuhlukeneyo kweengxenye kunye nokucocwa kwee-radiator cores.Ngeli xesha, ukulawula ukushisa kunye nokugxininiswa kwe-arhente yokucoca kunye nokugcina ubushushu kunye nokugxininiswa kwe-arhente yokucoca kwixabiso elifanelekileyo ngamanyathelo aphambili ekucoceni.Amava asebenzayo abonisa ukuba ukushisa kokucoca kwe-40 ° C ukuya ku-55 ° C kunye nokugxininiswa kwe-agent yokucoca i-20% yimilinganiselo engcono kakhulu yokucoca i-radiator ye-aluminium.(Apha kubhekiselwa kwi-aluminiyam yokucoca i-ejenti yokucoca indalo, ixabiso le-pH: i-10; ii-agent zokucoca iimodeli ezahlukeneyo okanye amanqanaba e-pH kufuneka aqinisekiswe ngaphambi kokusetyenziswa)

Ukuba kukho i-flux eyaneleyo, kunokwenzeka ukuba ubhobhoze i-workpiece ngaphandle kokucoca, kodwa ukucocwa kuya kubangela inkqubo elungelelanisiweyo, enokunciphisa inani le-flux esetyenzisiweyo kwaye ufumane imveliso edibeneyo edibeneyo.Ukucoceka kwe-workpiece kuya kuchaphazela ubuninzi be-coating flux.

Ukutshiza okuguquguqukayo

Ukutshiza i-flux ebusweni bamacandelo e-aluminium yinkqubo ebalulekileyo kwi-Nocolok.Inkqubo yokuqhafaza, umgangatho wokutshiza i-flux iya kuchaphazela ngokuthe ngqo umgangatho wokugcoba.Ngenxa yokuba kukho ifilimu ye-oxide kumphezulu we-aluminium.Ifilimu ye-oxide kwi-aluminium iya kuthintela ukumanzisa komphezulu kunye nokuhamba kwefiber etyhidiweyo.Ifilimu ye-oxide kufuneka isuswe okanye ihlatywe ukuze yenze i-weld.

Indima ye-flux: 1) Ukutshabalalisa ifilimu ye-oxide kwindawo ye-aluminium;2) Ukukhuthaza ukumanzisa kunye nokuhamba kakuhle kwe-solder;3) Ukuthintela umphezulu kwi-oxidizing kwakhona ngexesha lenkqubo yokuqhafaza.Emva kokuba i-brazing igqityiwe, i-flux iya kwenza ifilimu ekhuselayo kunye nokubambelela okunamandla phezu kwendawo ye-aluminium.Olu maleko lwefilimu alunampembelelo imbi ekusebenzeni kwemveliso, kodwa lunokuphucula kakhulu amandla eenxalenye ze-aluminiyam ukumelana nokubola kwangaphandle.

Ubungakanani be-flux eqhotyoshelweyo: Ngethuba lenkqubo yokuqhafaza, inani le-flux edibeneyo: ngokubanzi i-5g ye-flux ngemitha yesikwere;I-3g nge-square meter nganye ixhaphakile kule mihla.

Indlela yokongeza iFlux:

1) Kukho iindlela ezininzi ezahlukeneyo: ukutshiza ngoxinzelelo oluphantsi, ukuxubha, ukutshiza ngoxinzelelo oluphezulu, ukuntywila, ukutshiza nge-electrostatic;

2) Eyona ndlela iqhelekileyo yokongeza i-flux kwi-controlled atmosphere brazing (c AB ) inkqubo yokuxhoma ukutshiza;

3) Iimpawu ezibonakalayo kunye neekhemikhali ze-flux zenza ukutshiza okumanzi kukhetho lokuqala;

4) Kwinqanaba lehlabathi jikelele, ngokwezibalo: i-80% isebenzisa i-spray emanzi, i-15% isebenzisa i-spray eyomileyo, i-5% ekhethiweyo yokutshiza okanye i-pre-coat;

Ukutshiza okumanzi kuseyeyona ndlela iqhelekileyo yokuguquguquka kwishishini kwaye inika iziphumo ezilungileyo kakhulu.

Ukomisa

Ukuze kuqinisekiswe umgangatho weendawo zokuqhafaza, i-workpiece kufuneka yomiswe ngokupheleleyo ngaphambi kokuqhaqhazela ukususa umswakama kwi-coating flux.Eyona nto ibaluleke kakhulu kwinkqubo yokomisa kukulawula ubushushu bokumisa kunye nesantya se-mesh;ukuba iqondo lokushisa liphantsi kakhulu okanye isantya se-mesh sikhawuleza kakhulu, i-core ayiyi kumisa, okubangela ukuhla komgangatho wokubhobhoza okanye i-desoldering.Ubushushu bokomisa ngokuqhelekileyo buphakathi kwe-180°C kunye ne-250°C.

Ukugqabhuka

Iqondo lokushisa lommandla ngamnye kwicandelo lokuqhafaza, isantya somnatha kunye nomoya wesithando somlilo silawula umgangatho wokubhobhoza.Ukushisa kwe-brazing kunye nexesha lokutshisa kuya kuba nefuthe elithe ngqo kumgangatho wemveliso.Kungakhathaliseki ukuba iqondo lokushisa liphezulu kakhulu okanye liphantsi kakhulu, liya kuba nefuthe elibi kwimveliso, njengokunciphisa ubomi benkonzo yemveliso, okubangelwa ukungahambi kakuhle kwamanzi kwi-solder, kunye nokunciphisa ukuxhathisa ukukhathala kwemveliso;ngoko ke, ukulawula iqondo lobushushu kunye nexesha brazing isitshixo kwinkqubo yokuvelisa.

Umoya kwisithando somlilo siyinto ebalulekileyo echaphazela izinga le-welding.Ukuze kuthintelwe i-flux kunye neengxenye ze-aluminium ukuba zifakwe i-oxidized emoyeni, isantya se-mesh asigcini nje ukugqiba ubude bexesha lokuqhayisa, kodwa sinquma ukusebenza kakuhle kwemveliso.Xa umthamo we-radiator core umkhulu, ukwenzela ukuba ufumane ukushisa okwaneleyo kwindawo nganye (indawo yangaphambi kwe-brazing, indawo yokufudumala kunye ne-brazing zone) ngexesha lenkqubo yokutshisa.Isantya sothungelwano kufuneka sicothe ukuze ubushushu bomphezulu bufikelele kwelona xabiso liphezulu lenkqubo.Ngokuchasene noko, xa umthamo we-radiator core uncinci, isantya sothungelwano kufuneka sikhawuleze.

3. isiphelo

Iiradiator ziye zafumana izizukulwana ezithathu zophuhliso, ezizezi, iiradiyetha zobhedu, iiradiyetha ezenziwe ngealuminiyam kunye neeradiyetha ezenziwe nge-aluminiyam.Ukuza kuthi ga ngoku, iiradiyetha ze-aluminium brazed ziye zaba ngumkhwa wamaxesha, kunye nophuhliso oluqhubekayo kunye nenkqubela phambili yetekhnoloji, kunye nophuhliso lweemoto ezikhaphukhaphu.Iiradiyetha zeAluminium zisetyenziswe ngokubanzi ngenxa yokunganyangeki kwe-corrosion, ukuhanjiswa kakuhle kwe-thermal kunye nobunzima obulula.Ngokusetyenziswa okubanzi kweeradiyetha ze-aluminium, uphando malunga nomgaqo wobuchwephesha be-brazing luphuhlisa ngokubhekiselele ekwenzeni lula kunye nokwahlukana, kunye ne-brazing iteknoloji ye-welding ekhulayo kwishishini lokuvelisa i-radiator ze-aluminium.Inokwahlulwa ibe ngamacandelo amabini: akukho ukunyanyiswa kwe-flux kunye ne-flux brazing.Ukukhanya okuguquguqukayo kwemveli kusebenzisa ikloridi njenge-flux ukutshabalalisa ifilimu ye-oxide kumphezulu we-aluminiyam.Nangona kunjalo, ukusetyenziswa kwe-chloride flux kuya kuzisa iingxaki ze-corrosion.Ukuza kuthi ga ngoku, inkampani ye-aluminium iphuhlise i-non-corrosive flux ebizwa ngokuba yiNocolok.indlela.Nocolok.I-Brazing yindlela yophuhliso lwexesha elizayo, kodwa i-Nocolok.I-Brazing nayo inemida ethile.Ukususela kuNocolok.i-flux ayinyibiliki emanzini, kunzima ukugqoka i-flux kwaye kufuneka yomiswe.Ngexesha elifanayo, i-fluoride flux inokusabela nge-magnesium, ethintela ukusetyenziswa kwezixhobo ze-aluminium.Fluoride flux brazing iqondo lobushushu liphezulu kakhulu.Ke ngoko, iNocolok.indlela isafuna ukuphuculwa.

【iimbekiselo】

[1] Wu Yuchang, Kang Hui, Qu Ping.Uphando kwiNkqubo yeNgcali ye-Aluminiyam ye-Aluminiyam ye-Brazing Process [J].Umatshini wokuWelding woMbane, ngo-2009.

[2] Gu Haiyun.Ubuchwephesha obutsha be-Aluminiyam Brazed Radiator [J].UMsebenzi woomatshini, ngo-2010.

[3] Feng Tao, Lou Songnian, Yang Shanglei, Li Yajiang.Uphando malunga nokusebenza kwe-vacuum brazing kunye ne-microstructure ye-radiator ye-aluminium [J].Inqanawa yoxinzelelo, ngo-2011.

[4] Yu Honghua.Inkqubo yokutshisa kunye nezixhobo kwisithando somoya kwiradiyetha ye-aluminium.IThekhnoloji yoMbane, ngo-2009.

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