Patent ID: 8584499
Filing Date: 2013-11-19
Classification: B21B

Abstract:
1. A method of supplying lubricating oil in cold-rolling by emulsion lubrication, comprising: detecting an outlet side sheet speed and roll speed to calculate a forward ratio, controlling at least one of emulsion supply, emulsion concentration, emulsion temperature, and plateout length so that the forward ratio matches a target value, wherein said controlling is performed by a method comprising: α: supply efficiency which is determined as a function of rolling rate, emulsion supply, emulsion concentration, emulsion temperature, plateout length, rolled material width or roll barrel length, rolling load, grade of rolled material, and type of lubricating oil hemu: oil film thickness of emulsion lubrication under said specific rolling lubrication conditions hneat: oil film thickness of neat lubrication under said specific rolling lubrication conditions.