Kufa dhizaini uye kufa kukanda maitiro e zinc alloy kufa kukanda

Geometric dhizaini yepamusoro pevhu kudzora zinc zinc chiwanikwa castings

Mukugadzira zinc alloy kukanda geometry, sezvinobvira kudzivirira bofu gomba kudzika concave uye zvimwe zvimiro, saka, muchikamu chekugadzira, hachikanganisi chitarisiko uye kushandiswa kwechikamu, drainage process gomba yakanakira mhinduro, gasi. Nenzira iyi, mhinduro yeplating inogona kunyatsoputirwa uye dhigirii rekusvibisa rinogona kudzikiswa.

Kufa dhizaini uye kufa kukanda maitiro e zinc alloy kufa kukanda

Iyo yepamusoro ye zinc alloy die casting ine dense layer ine ukobvu hunosvika 0.1 mm, uye chikamu chemukati chine porous chimiro. Mukati mekugadzira kufa uye kukanda kufa, pamusoro pechishandiso chinofanirwa kuve chakatsetseka sezvinobvira, uye zvikanganiso zvekukanda senge makatsemuka, mabhomba, mapeji anotonhora, burr uye burr anofanirwa kudzikiswa.

Naizvozvo, zvinodikanwa kuita mechanical kuchenesa. Panguva ino, pamusoro peiyo dense layer inofanirwa kudzivirirwa, kuitira kudzivirira kuburitsa porous matrix, zvichikonzera kunetsa mu electroplating uye kukanganisa kunaka kwe electroplating. Release agent inowanzo shandiswa mu zinc alloy die casting. Kuchenjerera kunofanirwa kubhadharwa kune kushandiswa kwemumiriri wekuburitsa uye kudhirodha.

Kusarudzwa kwezvinhu zve zinc alloy die castings

Izvo zvinowanzo shandiswa zinc alloy zvinhu ndezvi: 2znal43, 2znal41, 2znal40.5, 2znal4, mhando dzinonyanya kushandiswa dzeznal925 uye znal903, asi znal903 iri nani pane znal925.

Mukuwedzera, chikamu chekudzoka kwezvinhu chinowanzoshandiswa mukukanda kufa, chikamu chinofanira kudzorwa pa15%, zvichida kwete kupfuura 20%. Nokuti zviri nyore kuiswa pamwe nezvimwe zvikamu (zvakadai sesilicon), kunamatira kwekuputira kunokanganisa. Kune ma castings ane mamwe mhinduro, zviri nani kushandisa hydrofluoric acid ye activation kurapwa panguva ye electroplating.

Kuongororwa kusina zinc alloy kufa castings pamberi pe electroplating

(1) Chitarisiko: tarisa kuti pane zvakatsemuka, zviputi, zvigwere, maburi uye humwe hurema hwakakomba pamusoro pechinhu chisina chinhu. Kuti uone kuwanda kwezviremara izvi, kana zvichigona kubviswa nemaitiro emagetsi (kupenya, kupurisa, nezvimwewo), nzira yekukuya inogona kuwedzerwa.

(2) Kuongorora kwezvinhu: tarisa giredhi rezinc alloy, nzwisisa chikamu chezvinhu zvakadzoserwa, tarisa kunaka kwezvikamu zvekukanda kufa, isa workpiece muchoto pa100 ~ 110. ℃ kwe30min, uye tarisa kana nzvimbo yacho iri kubuda.