一、前言采用计算机系统,使气体渗碳工艺有可能把物质交换的计算综合成工艺过程(即时间—气氛—温度)的函数控制。藉助在线系统,可能实现参数控制。过程控制计算机把由测量值所确定的碳曲线的实际形状与所要求的目标值(渗碳层深度、表面碳含量)加以比较,进而确定工艺所需的持续时间。尽管计算机辅助工艺过程控制具有一些优点,重要的是要注意到工厂的技术装备和 I. INTRODUCTION The use of a computer system makes it possible for the gas carburizing process to integrate the calculation of material exchange into a function control of the process (ie time-atmosphere-temperature). With online systems, parameter control is possible. The process control computer compares the actual shape of the carbon curve determined from the measured values ​​with the desired target values ​​(carburized layer depth, surface carbon content) to determine the desired duration of the process. Although computer-aided process control has some advantages, it is important to note that the plant’s technical equipment and