Rolls yog cov cuab yeej siv rau hlau dov. Raws li lawv daim ntawv thov thiab cov khoom siv, lawv tuaj yeem muab faib ua hom hauv qab no:
1. Kub Rolls: Haum rau cov txheej txheem kub dov, feem ntau ua los ntawm cov hlau alloy, muaj lub zog thermal thiab hnav tsis kam.
2. Cold Rolls: Feem ntau yog siv rau cov txheej txheem txias dov, feem ntau yog ua los ntawm siab -ceev steel los yog cov cuab yeej steel, muaj siab hardness thiab smoothness.
3. Coated Rolls: Nto kho nrog coatings xws li chromium, titanium, los yog tungsten plating kom hnav tsis kam thiab corrosion kuj.
4. Roughing Rolls: Feem ntau yog siv rau kev pib dov ntawm cov phaj tuab, feem ntau yog ua los ntawm cov hlau cam khwb cia lossis hlau.
5. Tiav Rolls: Siv rau precision dov ntawm nyias daim hlau los yog strips, feem ntau yog ua los ntawm alloy steel los yog hlau tshwj xeeb.
6. Cov txheej txheem yob: Siv rau cov txheej txheem dov nrog cov kev xav tau tshwj xeeb, xws li steel yeeb nkab yob thiab yob sib tsoo yob.
7. Cov yob zoo li: Cov yob nrog cov duab tshwj xeeb, xws li cov qauv yob thiab cov yob coated, yog siv los kho cov khoom yob nrog cov duab tshwj xeeb.
