In my early years on site, I believed high hardness meant long life. Many suppliers said the same thing. But reality in the mill was

In my early mill days, I saw roller sleeves fail without warning. One loud bang, then cracks, vibration, and a rushed shutdown. The problem was

High-quartz raw materials are a hidden enemy in grinding systems. I have seen many plants focus only on capacity and output, while quartz slowly destroys

In many plants I have visited, roller sleeves fail earlier than expected. Cracks appear. Wear becomes uneven. Costs rise. The real problem often hides inside

Every time I walk into a mill with a VRM vibration alarm and a fresh set of worn sleeves on the floor, I see the

In the plant, I often saw the same problem repeat. A roller sleeve looked fine on the outside, then a crack line showed up, then

Spalling and surface cracks do not start as “big failures.” They start as tiny stress points that grow with every load cycle. I have seen

Quando as minhas mangas de rolos falhavam cedo, eu costumava culpar primeiro a "baixa dureza". Depois, vi rolos muito duros racharem em poucos meses, enquanto

Quando um moinho vertical de rolos funciona bem durante meses e, de repente, uma manga de rolo se parte, toda a fábrica sente isso. Já vi isto

Muitos diretores de fábricas contam-me a mesma história. As suas mangas de alto crómio desgastam-se rapidamente, racham cedo e obrigam a paragens na pior altura. Eu tinha o