(1) Brazing maitiro aruminiyamu matrix macomposites anonyanya kusanganisira chidimbu (kusanganisira whisker) kusimbisa uye fiber kusimbisa.Zvinhu zvinoshandiswa pakusimbisa zvinonyanya zvinosanganisira B, CB, SiC, nezvimwe.
Kana iyo aruminiyamu matrix macomposites akashongedzwa uye achipiswa, iyo matrix Al iri nyore kuita nechikamu chekusimbisa, senge kukurumidza kupararira kweSi mune yekuzadza simbi kune base simbi uye kuumbwa kwe brittle dumping layer.Nekuda kwemusiyano wakakura mumutsara wekuwedzera coefficient pakati peAl uye yekusimbisa chikamu, kushata kwakashata kwebrazing kunokonzeresa kushushikana kwemafuta painterface, izvo zviri nyore kukonzera kuputika kwemajoini.Pamusoro pezvo, kunyorova pakati pesimbi yekuzadza uye chikamu chekusimbisa kwakashata, saka iyo yekubhuroka pamusoro peiyo composite inofanirwa kurapwa kana activated filler simbi inofanira kushandiswa, uye vacuum brazing inofanira kushandiswa kusvika pazvinobvira.
(2) Brazing zvinhu uye process B kana SiC particle yakasimbiswa aruminiyamu matrix composites inogona kugadzirwa, uye kurapwa kwepamusoro kusati kwabatanidzwa kunogona kuitwa ne sandpaper kugaya, waya kuchenesa bhurashi, alkali washing kana electroless nickel plating (coating ukobvu 0.05mm).Iyo yekuzadza simbi ndeye s-cd95ag, s-zn95al uye s-cd83zn, iyo inopiswa neyakapfava oxyacetylene murazvo.Mukuwedzera, simba rakabatana rakakwirira rinogona kuwanikwa nekukwenya brazing ne s-zn95al solder.
Vacuum brazing inogona kushandiswa pakubatanidza kwePfupi Fiber Yakasimbiswa 6061 aluminium matrix composite.Usati wabvongodzwa, nzvimbo yacho ichagayiwa ne 800 abrasive bepa mushure mekugaya, uye yozoiswa muchoto mushure mekuchenesa kwe ultrasonic muacetone.Al Si brazing filler simbi inonyanya kushandiswa.Kuti udzivise kupararira kweSi musimbi yepasi, chigadziko chearuminiyamu chakachena chivharidziro chivharo chinogona kuputirwa pamusoro pebrazing pamusoro pezvinhu zvinoumbwa, kana b-al64simgbi (11.65i-15mg-0.5bi) brazing filler simbi ine yakaderera brazing simba inogona kusarudzwa.Iyo yekunyunguduka tembiricha yemhando yebrazing filler simbi ndeye 554 ~ 572 ℃, tembiricha yebrazing inogona kuita 580 ~ 590 ℃, nguva yekubhuroka i5min, uye simba rekugera rejoini rakakura kupfuura 80mpa.
Kune graphite particle yakasimbiswa aruminiyamu matrix macomposites, brazing mune inodzivirira mamiriro evira ndiyo nzira yakabudirira kwazvo parizvino.Kuti uvandudze kunyorova, Al Si solder ine Mg inofanira kushandiswa.
Sezvakaita nealuminium vacuum brazing, kunyorova kwealuminium matrix composites inogona kuvandudzwa zvakanyanya nekuunza mg vapor kana Ti suction uye kuwedzera imwe huwandu hweMg.
Nguva yekutumira: Jun-13-2022