METHOD FOR GRINDING SURFACE OF OPERATION ROLL BY USING ONLINE ROLL GRINDER

摘要

PURPOSE: A grinding method is provided to precisely maintain roll profile through eliminating step difference between whole plate unit and a non-whole plate unit of an operation roll. CONSTITUTION: A wheel(122) is moved at different speeds in whole plate unit and non-whole plate unit of an operation roll(100) to grind step of the non-whole plate unit. Movement of the wheel is stopped at edges of the roll for grinding. Separate point locations of the roll are calculated. After rolling a piece of material, abrasion amounts at each separate location are calculated. Accumulated abrasion profile is calculated. After calculating grinded amount by online roll grinder(120), the result is accumulated to the abrasion profile. Requirement of grind is decided to calculate grinded amounts at each separate section. Moving speeds of the wheel for each section are calculated. Movement of wheel and grind are performed according to moving speeds of the wheel.