1. Zvinhu zvesimbi
(1) Titanium nesimbi dzayo hadziwanzo shandiswa simbi dzakapfava. Simbi dzinoshandiswa simbi dzinoshandiswa simbi dzinosanganisa silver base, aruminiyamu base, titanium base kana titanium zirconium base.
Solder ine sirivha inonyanya kushandiswa pazvinhu zvine tembiricha iri pasi pe540 ℃. Majoini anoshandisa solder yesirivha yakachena ane simba shoma, ari nyore kutsemuka, uye haana simba rekudzivirira ngura uye oxidation. Tembiricha yeAg Cu solder yakaderera pane yesirivha, asi kunyorova kunoderera nekuwedzera kweCu. Solder yeAg Cu ine huwandu hushoma hweLi inogona kuvandudza kunyorova uye dhigirii re alloying pakati pesolder nesimbi yebase. Solder yeAg Li ine hunhu hwekunyunguduka kwakaderera uye kuderedzwa kwakasimba. Yakakodzera brazing titanium uye titanium alloys mumhepo inodzivirira. Zvisinei, vacuum brazing inosvibisa choto nekuda kweLi evaporation. Ag-5al- (0.5 ~ 1.0) Mn filler metal ndiyo simbi inofarirwa ye filler components dze titanium alloy dzakatetepa. Solder ine oxidation yakanaka uye corrosion. Simba re shear re titanium uye titanium alloy joints dzakarukwa nesimbi yesilver base filler rinoratidzwa muTafura 12.
Tafura 12 brazing process parameters uye simba rekubatana kwe titanium ne titanium alloys
Kupisa kwesimbi inosungirirwa paaluminium kwakaderera, izvo zvisingazokonzere kuti titanium alloy β Phase transformation inoderedza zvinodiwa pakusarudzwa kwezvinhu zvesimbi inosungirirwa pamadziro uye maumbirwo. Kudyidzana pakati pesimbi inosungirirwa pamadziro nesimbi yepasi kwakaderera, uye kunyungudika nekupararira hazvisi pachena, asi purasitiki yesimbi inosungirirwa pamadziro yakanaka, uye zviri nyore kumonera simbi inosungirirwa pamadziro nesimbi yepasi, saka yakakodzera zvikuru kumonera titanium alloy radiator, chimiro chehoneycomb uye chimiro chelaminate.
Mafluxes akavakirwa paTitanium kana titanium zirconium anowanzo kuve neCu, Ni nezvimwe zvinhu, zvinogona kukurumidza kupararira mu matrix uye kuita zvakafanana netitanium panguva yebrazing, zvichikonzera ngura yematrix uye kuumbwa kwe brittle layer. Nokudaro, tembiricha yebrazing nenguva yekubata zvinofanirwa kudzorwa zvakanyanya panguva yebrazing, uye hazvifanirwe kushandiswa pakushongedza zvivakwa zvakatetepa zvakanyanya sezvinobvira. B-ti48zr48be iTi Zr solder yakajairika. Inokwanisa kunyorova zvakanaka kune titanium, uye simbi yepasi haina katsika kekukura kwezviyo panguva yebrazing.
(2) Simbi dzesimbi dzinoshandiswa pakugadzira zirconium nebase alloys. Simbi dzinoshandiswa pakugadzira zirconium nebase alloys dzinosanganisira b-zr50ag50, b-zr76sn24, b-zr95be5, nezvimwewo, izvo zvinoshandiswa zvakanyanya pakuumba zirconium alloy pombi dzenyukireya.
(3) Kuyerera kwesimbi uye mhepo inodzivirira titanium, zirconium uye base alloys zvinogona kuwana mhedzisiro inogutsa mumhepo isina kusimba uye isina simba (helium neargon). Argon yakachena kwazvo inofanira kushandiswa pakuisa simbi yakadzivirirwa neargon, uye dova rinofanira kunge riri -54 ℃ kana pasi. Kuyerera kwakakosha kune fluoride nechloride yesimbi Na, K neLi kunofanirwa kushandiswa pakuisa simbi mumoto.
2. Tekinoroji yekuisa mabrazing
Usati waisa brazing, pamusoro payo panofanira kucheneswa zvakanaka, kubviswa mafuta uye kubviswa firimu re oxide. Firimu re oxide rakakora rinofanira kubviswa nenzira yemakanika, nzira yekuputika kwejecha kana nzira yekugeza munyu wakanyungudutswa. Firimu re oxide rakatetepa rinogona kubviswa mumusanganiswa une 20% ~ 40% nitric acid uye 2% hydrofluoric acid.
Ti, Zr uye alloys dzadzo hadzibvumirwi kubata pamusoro pejoinhi nemhepo panguva yekupisa brazing. Brazing inogona kuitwa ichidzivirirwa ne vacuum kana inert gas. High frequency induction heating kana heating in protection inogona kushandiswa. Induction heating ndiyo nzira yakanakisisa yezvikamu zvidiki zvakafanana, nepo brazing muchoto ichibatsira zvikuru kune zvikamu zvikuru uye zvakaoma.
Ni Cr, W, Mo, Ta nezvimwe zvinhu zvinofanirwa kusarudzwa sezvinhu zvinodziisa zveTi, Zr ne alloys dzazvo. Midziyo ine graphite yakafumurwa sezvinhu zvinodziisa haifanirwe kushandiswa kudzivirira kusvibiswa kwekabhoni. Chigadziko cheBrazing chinofanira kugadzirwa nezvinhu zvine simba rakanaka rekupisa kwepamusoro, chiyero chekuwedzera kwekupisa chakafanana neTi kana Zr, uye reactivity yakaderera nesimbi yepasi.
Nguva yekutumira: Chikumi-13-2022