1. Kupisa zvinhu
(1) Brazing filler simbi yakakanda simbi brazing inonyanya kutora mhangura zinc brazing filler simbi uye sirivheri copper brazing filler simbi.Iwo anowanzo shandiswa copper zinc brazing filler metal brands ndeye b-cu62znnimusir, b-cu60zusnr uye b-cu58znfer.Kusimba kwekusimba kwebrazed cast iron joint inowanzosvika 120 ~ 150MPa.Pahwaro hwemhangura zinc brazing filler simbi, Mn, Ni, Sn, AI uye zvimwe zvinhu zvinowedzerwa kuita kuti brazed joint ive nesimba rakafanana nesimbi yepasi.
Kunyungudika tembiricha yesirivha mhangura brazing filler simbi yakadzikira.Chimiro chinokuvadza chinogona kudziviswa kana uchigadzira simbi yakakandwa.Iyo brazing joint ine kuita kwakanaka, kunyanya iyo brazing filler simbi ine Ni, senge b-ag50cuzncdni uye b-ag40cuznsnni, iyo inosimudzira simba rekusunga pakati pebrazing filler simbi uye cast iron.Iyo inonyanya kukodzera kubhuroka kwenodular cast iron, iyo inogona kuita kuti mubatanidzwa uve nesimba rakafanana nesimbi yepasi.
(2) Kana mhangura uye zingi zvichishandiswa kugadzira brazing iron, fb301 uye fb302 inonyanya kushandiswa, kureva, borax kana musanganiswa weborakisi neboric acid.Mukuwedzera, iyo flux inoumbwa neh3bo340%, li2co316%, na2co324%, naf7.4% uye nac112.6% iri nani.
Kana uchigadzira simbi yakakandwa nesimbi yemhangura yekuzadza simbi, zvinoyerera zvakaita sefb101 uye fb102 zvinogona kusarudzwa, kureva musanganiswa weborax, boric acid, potassium fluoride uye potassium fluoroborate.
2. Brazing teknolojia
Pamberi pekupisa simbi yakakandwa, graphite, oxide, jecha, tsvina yemafuta uye mamwe maturu ari pamusoro pekukanda anobviswa zvakanyatsonaka.Organic solvent scrubbing inogona kushandiswa kubvisa mavara emafuta, nepo nzira dzemuchina dzakaita sekuputika kwejecha kana kuputika kwepfuti, kana nzira dze electrochemical dzinogona kushandiswa kubvisa graphite nemaokisi.Mukuwedzera, graphite inogona kubviswa nekuipisa nemoto we oxidizing.
Brazing cast iron inogona kupiswa nemurazvo, choto kana induction.Sezvo SiO2 iri nyore kuumba pamusoro pesimbi yakakandwa, iyo brazing mhedzisiro mumhepo yekudzivirira haina kunaka.Kazhinji, brazing flux inoshandiswa kugadzirisa.Paunenge uchigadzira mahombe ekushanda nemhangura zinc brazing filler simbi, dhizaini yebrazing flux ichapfapfaidzwa panzvimbo yakacheneswa kutanga, uye ipapo ma workpiece anozoiswa muchoto chekudziya kana kudziisa netochi yekubatira.Kana iyo workpiece ichidziya kusvika ku800 ℃, wedzera kuwedzera flux, kupisa kune kupisa kwekupisa, wobva wakwenya tsono kumucheto kwejoini kunyungudutsa solder uye kuzadza gap.Kuti uvandudze kusimba kwebrazed joint, annealing treatment ichaitwa pa700 ~ 750 ℃ for 20min after brazing, uyezve kutonhora kunononoka kunoitwa.
Mushure mekugadzirisa, kuwedzera kwekuputika uye zvakasara zvinogona kubviswa nekushambidza nemvura inodziya.Kana zvakaoma kubvisa, inogona kucheneswa ne 10% sulfuric acid aqueous solution kana 5% ~ 10% phosphoric acid aqueous solution, uye yozocheneswa nemvura yakachena.
Nguva yekutumira: Jun-13-2022