Mhedziso yeValve Casting

1. Chii chiri kukanda

Iyo simbi yemvura inodururwa mugomba rekuumbwa nechimiro chakakodzera chikamu, uye mushure mekusimba, chikamu chechigadzirwa chine chimwe chimiro, saizi uye yemhando yepamusoro inowanikwa, iyo inonzi kukanda. Zvinhu zvitatu zvikuru: alloy, modeling, kudurura uye kusimba. Kubatsira kukuru: zvikamu zvakaoma zvinogona kuumbwa.

2. Kubudirira kwekukanda

Kugadzirwa kwakatanga kumakore ekuma1930 vachishandisa michina yepneumatic uye maitiro ekugadzira jecha revhu.

Cement jecha rudzi rwakaonekwa muna 1933

Muna 1944, iyo inotonhora yakaoma yakavharidzirwa resin jecha shell rudzi yakaonekwa

CO2 yakaomeswa mvura girazi jecha mold yakaonekwa muna 1947

Muna 1955, thermal coating resin sand shell type yakaonekwa

Muna 1958, furan resin no-bake jecha mold yakaonekwa

Muna 1967, simende inoyerera jecha mold yakaonekwa

Muna 1968, girazi remvura rine organic hardener rakaonekwa

Mumakore makumi mashanu apfuura, nzira itsva dzekugadzira molds nenzira dzepanyama, dzakadai se: magnetic pellet molding, vacuum sealing molding method, yakarasika furo kuumba, etc. Nzira dzakasiyana-siyana dzekukanda dzinobva pamagetsi esimbi. Zvakadai sekukanda kwecentrifugal, kukanda kwakakwira, kukanda kwakadzika, kukanda kwemvura, nezvimwe.

3. Zvimiro zvekukanda

A. Wide kuchinjika uye kuchinjika. Zvese zvigadzirwa zvesimbi. Kukanda hakuganhurwe nehuremu, saizi uye chimiro chechikamu. Huremu hunogona kubva pamagiramu mashoma kusvika kumazana ematani, ukobvu hwemadziro hunogona kubva kubva 0.3mm kusvika 1m, uye chimiro chinogona kunge chakaomarara zvikamu.

B. Zvizhinji zvezvakagadzirwa uye zvekubatsira zvinoshandiswa zvinotengwa zvakanyanya uye zvakachipa, senge simbi yakaraswa nejecha.

C. Castings inogona kuvandudza kurongeka kwedimensional uye pamusoro pemhando yekukanda kuburikidza nehunyanzvi hwekukanda tekinoroji, kuitira kuti zvikamu zvinogona kutemwa zvishoma uye pasina kucheka.