Mabhandi emuchina anotenderera eminda yakanyorova uye yakaoma, anodzivirira kupera simba uye anogara kwenguva refu

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Yakagadzirwa nesimbi yepamusoro-soro ine kabhoni yakawanda uye iri kurapwa nekupisa kwakanyanya, ine kuomarara kwakanyanya uye kuramba kupfeka. Dhizaini yayo yakasiyana yakakombama inoderedza kupinda kwevhu, inoputsa ivhu zvinobudirira, uye inovandudza zvakanyanya kushanda zvakanaka kwekurima. Yakakodzera nzvimbo dzakasiyana-siyana dzekurima, kusanganisira minda yakaoma, minda yemupunga, uye minda yemichero, iri nyore kuisa uye inoenderana zvikuru nemichina yekurima mikuru. Inogara kwenguva refu uye yakasimba, inoderedza kushandiswa kwesimba zvinobudirira, zvichiita kuti ive chinhu chakanakira kugadzirwa kwekurima kwemazuva ano.

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Sechikamu chikuru chemichina yekurima yemazuva ano, ma rotary tillers akagadzirirwa kugadzirira ivhu uye anoshandiswa zvakanyanya muma rotary tillers akaiswa mumatractor. Akagadzirwa nesimbi yepamusoro-soro ine kabhoni yakawanda kana alloy steel kuburikidza nekugadzira nemazvo uye kupisa, anopa simba rakawanda, anodzivirira kupera, uye anodzivirira kukuvadzwa, zvichiita kuti ashande kwenguva refu uye agare kwenguva refu munzvimbo dzakaoma dzekurima.

Chimiro chebanga chakagadzirwa kuti chikwanise kushandiswa kwemvura, chine jira rakakombama, zvichiita kuti ivhu risapindwe zvakanyanya uye kuti ivhu rinyatsopwanywa zvakanaka. Chinogona kucheka, kupwanya, uye kusanganisa ivhu panguva imwe chete, zvichivandudza kushanda zvakanaka kwekurima. Mishonga yakakosha yekudzivirira ngura (yakadai secarburizing kana galvanizing) inowedzera hupenyu hwebasa rebanga uye inoderedza mari yekuritsiva kakawanda.

Chigadzirwa ichi chakakodzera kushandiswa kwakasiyana-siyana, kusanganisira minda yemupunga, ivhu rakaoma, uye minda yemichero. Chinocheka mashanga nemasora zvinobudirira uye chinofukidza ivhu zvakaenzana, chichikurudzira kuora kwezvirimwa, kusunungura ivhu, uye kuvandudza kukora kwevhu. Dhizaini yaro inobvumira kutsiva nekukurumidza uye inoenderana nemichina yekurima mikuru, zvichiita kuti ive sarudzo yakanaka yekuvandudza michina yekurima uye kuwana kurima kwakanaka uye kusingashandise simba zvakanyanya.

Simbi yemhando yepamusoro yemanganese ine kabhoni yakawanda (yakaita se65Mn) kana simbi ye alloy inosarudzwa uye inorapwa nekupisa kwakanyatsonaka (kudzima + tempering) kuitira kuti banga rive rakaomarara uku richiramba rakasimba kuti risatsemuke kana kuputsika.

Chibanga chacho chakasimbiswa zvakanyanya, chine kuomarara kweHRC50 kana kupfuura. Kusapera kwacho kwakakwirira ne50% kupfuura kwezvishandiso zvakajairika, izvo zvinoita kuti nguva yekuchitsiva iwedzere. Chinonyanya kukodzera mamiriro ekushanda akaomarara akadai sejecha nevhu rakaoma.