A Discourse on Variables Affecting Grinding Spark Duration of Billets -Using 1018 Steel B5 Process of Certain Steel Plant as Example

The length of time the grinding spark lasts during the rolling process is usually the standard used to determine the quality of the billet, since there are many different components to a billet, and since during the steelmaking process, the factors affecting the duration of the grinding spark are quite complicated. Therefore, through the 1018 steel billet that uses the B5 process, this research includes variables such as the constituent components, the processing procedures, the time and temperature of the production process, and the alloy addition into the sample data for analysis using the Statistical Program for Social Sciences (SPSS) 12.0. (Rock, 2007) Through multiple regression analysis, this research aims to uncover and control the variables affecting the duration of grinding sparks, in order to reduce the duration of grinding sparks, thus improving quality. By applying the methods suggested in this research to other steel types, reasonable regression models on factors affecting the grinding spark duration of different steel types can be obtained, and they can further be controlled to reduce the load of downstream inspection and lapping, thus improving their quality.