Journal bearing of sink roll and stabilizing roll for melted metal plating

摘要

PURPOSE: A journal bearing of dipping rolls for molten metal plating is provided to extend life cycle of the journal bearing by manufacturing bearing liner using cermet reinforced by molybdenum boride compound and manufacturing bush rubbed against the bearing liner using zirconia (ZrO2) based or silicon nitride (Si3N4) based ceramic. CONSTITUTION: As a journal bearing, a bearing driving component, for dipping rolls that are sink roll(3) and stabilizing rolls(4) to be dipped into hot dip coating pot, the journal bearing of the dipping rolls for molten metal plating is characterized in that the journal bearing of the dipping rolls comprises bearing liner(6) and bush(7), the bearing liner(6) is made of cermet of cobalt or nickel alloy matrix in which molybdenum boride compound is reinforced, and the bush(7) is made of a zirconia (ZrO2) based or silicon nitride (Si3N4) based ceramic.