1. Chii chinonzi kukanda
Simbi yemvura inodururwa mugomba remould rine chimiro chakakodzera chikamu chacho, uye mushure mekunge chaoma, chikamu chechigadzirwa chine chimiro chakati, saizi uye mhando yepamusoro chinowanikwa, icho chinonzi casting. Zvinhu zvitatu zvikuru: alloy, modeling, pouring uye solidification. Chinhu chikuru: zvikamu zvakaoma zvinogona kuumbwa.
2. Kuvandudzwa kwekukanda zvinhu
Kugadzira kwakatanga muma1930 uchishandisa michina yepneumatic uye maitiro ejecha revhu rekugadzira.
Rudzi rwejecha resimende rwakaonekwa muna 1933
Muna 1944, rudzi rweganda rejecha rakaputirwa ne resin rakatonhora rakaonekwa.
Mould yejecha regirazi remvura rakaomeswa reCO2 yakaonekwa muna 1947
Muna 1955, rudzi rweganda rejecha repurasitiki rakaonekwa.
Muna 1958, furan resin isina kubikwa jecha mold yakaonekwa
Muna 1967, mold yejecha rinoyerera semende yakaonekwa
Muna 1968, girazi remvura rine organic hardener rakaonekwa
Mumakore makumi mashanu apfuura, nzira itsva dzekugadzira maforoma ekugadzira zvinhu zvekugadzira uchishandisa nzira dzepanyama, dzakadai se: magnetic pellet molding, vacuum sealing molding method, lost foam molding, nezvimwewo. Nzira dzakasiyana dzekugadzira zvinhu dzakavakirwa paforoma dzesimbi. Dzakadai se centrifugal casting, high pressure casting, low pressure casting, liquid extrusion, nezvimwewo.
3. Zvinhu zvinoumba kukanda
A. Kuchinjika kwakakura uye kuchinjika. Zvigadzirwa zvese zvesimbi. Kuumbwa kwesimbi hakugumiri pahuremu, saizi uye chimiro chechikamu. Huremu hwacho hunogona kubva pamagiramu mashoma kusvika kumazana ematani, ukobvu hwemadziro hunogona kubva pa0.3mm kusvika 1m, uye chimiro chacho chinogona kunge chakaoma zvikuru.
B. Zvizhinji zvezvinhu zvisina kugadzirwa uye zvekubatsira zvinoshandiswa zvinowanikwa zvakanyanya uye zvakachipa, zvakaita sesimbi yakachekwa nejecha.
C. Kukanda kunogona kuvandudza kururama kwehukuru hwezvinhu zvakakandwa kuburikidza netekinoroji yepamusoro yekukanda, kuitira kuti zvikamu zvigone kuchekwa zvishoma uye pasina kucheka.
Nguva yekutumira: Nyamavhuvhu-11-2022
