冷轧过程热滑伤缺陷预报与控制软件

Forecasting and Controlling Software of Thermal Scratch Defect in Cold Rolling Process

在实验室对SUS430不锈钢进行了冷轧润滑实验研究,建立了变形区油膜厚度数学模型.根据统计学原理,利用回归拟合方法给出了热滑伤变形区临界油膜厚度模型,进而提出了基于比厚度法的热滑伤缺陷判定准则.在Visual C++6.0环境下,通过SQL Server 2005实现数据存储和调用,采用MFC技术开发了不锈钢冷连轧表面热滑伤预报与控制软件,并实现了软件的在线应用.统计结果表明:在线使用该软件的热滑伤命中率达到87.74%,现场不锈钢卷热滑伤发生率下降83.81%,不锈钢卷轧制速度提高9.3%.该软件对不锈带钢表面质量控制、分析和解决冷连轧热滑伤缺陷问题具有重要意义.

In order to establish a precise mathematical model of oil film thickness in deformation zone, the lubrication in cold rolling process of SUS430 stainless steel strip was studied in the laboratory. According to the principle of statistics, the mathematical model of critical oil film thickness in deformation zone for thermal scratch was built by using the fitting and regression analytical method, and the criterion for deciding thermal scratch defect was put forward on the basis of the thickness comparison method. Storing and calling data through SQL Server 2005, a forecasting and controlling software of thermal scratch was developed in the Visual C ＋ ＋ 6.0 environment by MFC technique for stainless steel in tandem cold rolling, and then it was used in the practical production. Statistical results demonstrated that the hit rate of thermal scratch arrives at 87.74% , the occurrence rate of thermal scratch decreases by 83.81% , and the rolling speed increases by 9.3%. The software is of significance to the control of products quality of stainless steel strips, and the analysis and solution to the problem of thermal scratch defects in tandem cold rolling.