Rolls chinhu chakakosha mukupisa kutenderedza chigayo, ichiita basa rakakosha mukugadzira nekugadzira simbi kuita zvigadzirwa zvakasiyana. Pakati pemhando dzakasiyana dzemapumburu anoshandiswa muchirongwa ichi, forged roll, work roll, backup roll, uye tsigiro roll ndiwo akakosha anobatsira mukubudirira uye kunaka kwechigayo chinopisa.

Forged rolls inogadzirwa kuburikidza nemaitiro ekuumba uye kumanikidza simbi pasi pekumanikidzwa kwakanyanya, zvichikonzera dense uye yakasimba roll. Aya mipumburu anozivikanwa nekuda kwesimba rawo uye kugona kumirisana nemamiriro akanyanya ezvigayo zvinopisa, zvichiita kuti zvive zvakanaka kune mabasa anodiwa anobatanidzwa mukuita.

Mipumburu yebasa ndeimwe rudzi rwakakosha rwemupumburu unoshandiswa mumagayo anopisa anokungurusa, ane mutoro wekuisa kumanikidza kune simbi kuti iparadze nekuigadzira zvinoenderana nezvinodiwa. Aya ma rolls anoiswa pasi pemitoro yakakwira uye tembiricha, izvo zvinoda kuti ive yakanakisa kupfeka kuramba uye kugadzikana kwemafuta kuti ive nechokwadi chekuita kunoenderana.

Backup rolls inopa tsigiro uye kuenzana kumabasa rolls, kubatsira kuchengetedza kugadzikana uye kurongeka kweiyo rolling process. Mipumburu iyi yakagadzirirwa kumira nesimba guru rinoitwa panguva yekukunguruswa kwesimbi, zvichiita kuti ive chinhu chakakosha pakuona kunaka uye kurongeka kwechigadzirwa chekupedzisira.

Mipumburu yetsigiro, sezita rinoratidza, inopa rubatsiro rwakawedzerwa kune basa uye mabheji ekuchengetedza, zvichibatsira pakubudirira kwese uye kushanda kwechigayo chinopisa. Aya ma rolls akagadzirirwa kubata lateral mauto uye kuve nechokwadi kurongeka kwakaringana kwemamwe ma rolls, nekudaro kusimudzira kushanda kwese kweiyo rolling process.

Mukupedzisa, marudzi akasiyana-siyana emapumburu, anosanganisira forged rolls, work rolls, backup rolls, uye tsigiro rolls, akakosha mukushanda kwakabudirira kwezvigayo zvinopisa. Hunhu hwavo hwakasiyana uye mabasa anobatsira kune iyo yese mhando, kunyatsoita, uye iko kurongeka kwesimbi kuumbwa, zvichiita kuti zvive zvinhu zvakakosha muindasitiri yekugadzira.