Design And Application Of Computer Management And Control System For Conventional Heat Treatment Process

Heat treatment is one of important processes in the manufacture of mechanical parts and equipments. Appropriate heat treatment is advantageous to develop strength potential of metals and performance of mechanical parts. Automation of heat treatment production is paid more attention along with increasing requirement of performance and reliability. With the development of computer, the application of heat treatment automation is widespread. The integration, intelligent and network management of heat treatment production can be realized with the help of information technology.By heat treatment process management, the quality of process planning can be improved, and product seedtime can be shortened. The temperature of heat treatment procedure is measured and controlled in a way of real time according to fuzzy control theory, and the production record is added to database, which can improve heat treatment quality, strengthen the quality backtracking. The two sub systems are integrated to improve efficiency, manage information effectively and heighten competitive capacity.The common problems in practical heat treatment process of heat treatment enterprises are investigated. Based on the practicality for customers, a set of software system applied to heat treatment process is developed by Visual Basic 6.0 and SQL Server 2000. The main purpose is to designing process management and control system, summarized as follows:1. Based on relative literatures and ISO 9000 series standards about the particular requirements of managing and controlling production quality files, process files and records are managed effectively. By information technology, heat treatment database is designed to aid process planning.2. The structure of host computer and AI controllers is introduced to design heat treatment control system. The control and measurement of heat treatment furnace is realized via communication protocol. The system can control temperature precisely and record the production data exactly and detailedly.3. Integration of the two systems reduces workload of the operators and improves work efficiency remarkably. The whole process is managed and controlled effectively, total quality management for heat treatment production process is carried out.