Ikhanda eligaya ngebhubesi

Ngokusho kwamaphuzu ahlukene okuncibilika kwe-solder, i-brazing ingahlukaniswa ibe yi-solder ethambile kanye ne-solder eqinile.

Soldering

I-solder ethambile: indawo encibilikayo ye-solder ye-solder ethambile ingaphansi kuka-450 ° C, futhi amandla ahlangene aphansi (ngaphansi kuka-70 MPa).

I-soldering ethambile isetshenziswa kakhulu ekushiseleni amadivaysi e-conductive, angangeni moya futhi angangeni manzi ezimbonini zikagesi nezokudla.Ukushisela ithini nge-tin-lead alloy njengensimbi yokugcwalisa isetshenziswa kakhulu.I-solder ethambile ngokuvamile idinga ukusebenzisa i-flux ukususa ifilimu ye-oxide futhi ithuthukise ukumanzisa kwe-solder.Kunezinhlobo eziningi ze-soldering fluxes, futhi isisombululo sotshwala se-rosin sivame ukusetshenziselwa ukuthengiswa embonini ye-elekthronikhi.Okusele kwalokhu kuguquguquka ngemva kokushisela akunawo umthelela olimazayo kucezu lokusebenza, okubizwa ngokuthi i-non-corrosive flux.I-flux esetshenziselwa ukushisela ithusi, insimbi nezinye izinto zakhiwa i-zinc chloride, i-ammonium chloride ne-vaseline.Lapho kushiswa i-aluminium, i-fluoride ne-fluoroborate kusetshenziswa njengama-brazing fluxes, kanti i-hydrochloric acid ne-zinc chloride nazo zisetshenziswa njenge-brazing fluxes.Okusele kwalokhu kuguquguquka ngemva kokushisela kuyagqwala, okubizwa ngokuthi ama-corrosive fluxes, futhi kufanele kuhlanzwe ngemva kokushiselwa.

Ukubhuqa

I-Brazing: indawo yokuncibilika yensimbi yokugcwalisa ingaphezulu kuka-450 ° C, futhi amandla ahlangene aphezulu (ngaphezu kuka-200 MPa).

Amalunga e-Brazed anamandla amakhulu, kanti amanye angasebenza ezingeni lokushisa eliphezulu.Kunezinhlobo eziningi zezinsimbi zokugcwalisa i-brazing, futhi i-aluminium, isiliva, ithusi, i-manganese kanye nezinsimbi zokugcwalisa ezisekelwe ku-nickel yizona ezisetshenziswa kakhulu.I-Aluminium base filler metal ivame ukusetshenziselwa ukubhula imikhiqizo ye-aluminium.Amasoda asekelwe esiliva nasekelwe ethusi ngokuvamile asetshenziselwa ukubrasa izingxenye zethusi nezensimbi.Amasoda asuselwa ku-manganese nasuselwa ku-nickel asetshenziswa kakhulu ukushisela insimbi engagqwali, insimbi engashisi nezingxenye ze-superalloy ezisebenza emazingeni okushisa aphezulu.Ama-solder asekelwe ku-Palladium, asekelwe ku-zirconium kanye ne-titanium avame ukusetshenziselwa ukushisela izinsimbi eziphikisayo ezifana ne-beryllium, i-titanium, i-zirconium, i-graphite kanye ne-ceramics.Uma ukhetha insimbi yokugcwalisa, izici zensimbi eyisisekelo kanye nezidingo zokusebenza okuhlangene kufanele kucatshangelwe.I-Brazing flux ivamise ukwakhiwa ngama-chloride nama-fluoride ezinsimbi ze-alkali nezinsimbi ezisindayo, noma i-borax, i-boric acid, i-fluoroborate, njll., engenziwa ibe yimpushana, inamathise noketshezi.I-lithium, i-boron ne-phosphorus nayo yengezwa kwamanye ama-solder ukuthuthukisa ikhono lawo lokususa ifilimu ye-oxide kanye nokumanzisa.Hlanza i-flux esele ngemva kokushisela ngamanzi afudumele, i-citric acid noma i-oxalic acid.

Qaphela: Indawo yokuxhumana yensimbi eyisisekelo kufanele ihlanzeke, ngakho-ke i-flux kufanele isetshenziswe.Umsebenzi we-brazing flux ukususa ama-oxides nokungcola kukawoyela ebusweni bensimbi eyisisekelo kanye nensimbi yokugcwalisa, ukuvikela indawo yokuxhumana phakathi kwensimbi yokugcwalisa nensimbi eyisisekelo ku-oxidation, nokwandisa ukumanzisa kanye ne-capillary fluidity yensimbi yokugcwalisa.Indawo yokuncibilika ye-flux izoba ngaphansi kunaleyo ye-solder, futhi ukugqwala kwensalela ye-flux kusisekelo sensimbi kanye nokuhlangana kuzoba kuncane.I-flux evame ukusetshenziswa ekuhlanganiseni okuthambile iyisisombululo se-rosin noma i-zinc chloride, futhi i-flux evame ukusetshenziselwa i-brazing iyingxube ye-borax, i-boric acid ne-alkaline fluoride.

Uhlelo lokusebenza nesici ukuhlela nokusakaza

I-Brazing ayifanele ukushiswa kwezakhiwo zensimbi ezijwayelekile kanye nezingxenye zomthwalo osindayo neziguqukayo.Isetshenziselwa ikakhulukazi ukukhiqiza amathuluzi anembayo, izakhi zikagesi, izingxenye zensimbi ezingafani kanye nezinhlaka zamapuleti amancane amancane, njengezingxenye zesemishi, izakhiwo zekhekheba lezinyosi, njll. Ibuye isetshenziselwe ukubraza izintambo ezihlukahlukene ezingafani namathuluzi e-carbide enosimende.Ngesikhathi sokuqhakaza, ngemuva kokuthi indawo yokuxhumana ye-workpiece e-brazed ihlanjululwe, ihlanganiswa ngendlela yokuhlanganisa, futhi insimbi yokugcwalisa ifakwe eduze kwegebe elihlangene noma ngqo kwigebe elihlangene.Lapho i-workpiece kanye ne-solder kushisa ekushiseni okuphakeme kancane kunokushisa okuncibilika kwe-solder, i-solder izoncibilika futhi ifake ubuso be-weldment.Insimbi yokugcwalisa uketshezi izogeleza futhi isakaze eduze komthungo ngosizo lwesenzo se-capillary.Ngakho-ke, insimbi ene-brazed ne-filler metal iyancibilika futhi ingene komunye nomunye ukuze yenze ungqimba lwe-alloy.Ngemuva kwe-condensation, i-brazed joint iyakhiwa.

I-Brazing isetshenziswe kakhulu kwemishini, kagesi, izinsimbi, umsakazo neminye iminyango.Amathuluzi e-Carbide, izingcezu zokubhoboza, amafreyimu ebhayisikili, izishintshi zokushisa, amapayipi kanye neziqukathi ezihlukahlukene;Ekwenziweni kwamagagasi e-microwave, amashubhu kagesi kanye nemishini ye-vacuum kagesi, i-brazing yiyona ndlela kuphela yokuxhumana engenzeka.

Izici ze-brazing:

Isondo lokugaya idayimane le-brazed

Isondo lokugaya idayimane le-brazed

(1) Izinga lokushisa elishisayo liphansi, ilunga libushelelezi futhi liyisicaba, ukuguqulwa kwe-microstructure kanye nezakhiwo zemishini kuncane, ukuwohloka kuncane, nosayizi we-workpiece unembile.

(2) Ingakwazi ukushisela izinsimbi nezinto zokwakha ezingafani ngaphandle kwemingcele eqinile ekuhlukeni kokuqina kwe-workpiece.

(3) Ezinye izindlela zokuhlanganisa zingashisela ama-weld amaningi namajoyinti ngesikhathi esisodwa, ngokukhiqiza okuphezulu.

(4) Imishini yokuhlanganisa ilula futhi ukutshalwa kwezimali kokukhiqiza kuphansi.

(5) Amandla ahlangene aphansi, ukumelana nokushisa akulungile, futhi izidingo zokuhlanza ngaphambi kokushisela ziqinile, futhi intengo ye-solder iyabiza.