关键词: 电化学, 酸洗终点, 首零法

Abstract: Pickling is an effective way to remove the oxide scale covered on steel materials.It is vital to determine the endpoint in the course of pickling process investigation.According to the reaction process of the oxide scale covered on hot-rolling strips with the hydrochloric acid,a method for determining the endpoint of pickling based on electrochemical principle was suggested.In the pickling experimentation of hot-rolling strips,an accurate precision can be obtained using this method.

Key words: electrochemistry, endpoint of pickling, first zero point of differential value