Abstract: This paper presents a demonstration system for a walking beam furnace production line designed using KingSCADA software. Actual operation results demonstrate that the system can effectively monitor the actual industrial site conditions. Keywords : Reheating Furnace; Demonstration System; Kingview Software [align=center]Design of Demonstration System for Reheating Furnace Production Line Based on Kingview He Ping, Chen Hua, Lou Yi (College of Electrical Engineering, Xinjiang University, Urumqi, Xinjiang 830008) He Ping, Chen Hua, Lou Yi (College of Electrical Engineering, Xinjiang University, Urumqi, Xinjiang 830008)[/align] Abstract: This article designed Demonstration System for Walking Beam Furnace Production Line by using of Kingview software, against prosess of Walking Beam Furnace. Experimental results of operation showed that this system could Reflect Monitoring process of Actual Industrial Field. Keywords : Reheating Furnace; Demonstration System; Kingview software 1 Overview of Reheating Furnace Walking beam furnace is used to heat steel billets before rolling. The furnace structure is a three-section continuous heating, namely preheating section, heating section, and soaking section. Flat flame burners are used at the top of the heating section and the soaking section[1]. Heating method: The preheating section uses flue gas to slowly heat the steel billet, reducing its thermal stress; the heating section heats rapidly, reducing the billet's residence time in the high-temperature zone to minimize oxidation and decarburization; the soaking section controls the billet surface temperature to prevent further increases, eliminating the large cross-sectional temperature difference ("black mark") caused by intensified heating. The heating furnace uses a side-in, side-out loading and unloading method. Steel billets are pulled one by one from the loading platform to the sorting machine, then conveyed to the furnace front loading roller conveyor. The speed of the cantilever roller conveyor inside the furnace is controlled to ensure accurate positioning of the billets. An alignment pusher pushes the billets onto a fixed beam, and a walking beam, through a positive cycle of backward, upward, forward, and downward movement, gradually conveys the heated billets to the furnace's discharge end. Finally, the cantilever roller conveyor at the discharge end ejects the billets from the furnace. Conversely, when the furnace is under maintenance or an accident occurs, the walking beam moves the billet from the discharge end back to the charging end through a reverse cycle of rising, retreating, falling and advancing. 2 KingSCADA Software KingSCADA is a dedicated software for data acquisition and process control with rich functions. It can be used for process control and management monitoring in industrial automation. It provides system engineers with an integrated, flexible and easy-to-use development environment and a wide range of functions, enabling them to quickly build, test and deploy automation applications to connect, transmit and record real-time information. It allows users to view and control industrial production processes in real time [2]. The main functions of KingSCADA are: (1) rich human-machine interface functions, visual operation interface, true color display graphics, and rich library; (2) powerful communication capabilities; (3) advanced alarm and event management; (4) powerful network and redundancy functions. According to the actual situation of the project, users can use the I/O Driver of the underlying device, the open database and screen production tools provided by the general configuration software to complete a project with animation effects, real-time data processing, historical data and curves coexisting, multimedia functions and network functions, without industry restrictions. The KingSCADA function diagram is shown in Figure 1. [align=center] Figure 1 KingSCADA Function Diagram[/align] Building an application can be divided into four steps: designing the graphical interface; constructing the database; establishing animation connections; running and debugging. These four parts are often intertwined. Before constructing the application using TOUCHMAK, the project should be carefully planned, mainly considering three aspects: graphics; data; and animation. 3 Simulation Design of Heating Furnace Production Line Process The KingSCADA software was used to design the heating furnace control screen to simulate the actual production process. The design simplified the heating furnace production process, focusing on the control of billet feeding, pusher, walking beam, heating, detection, and tapping. The design flow of the heating furnace production line demonstration system is shown in Figure 2. [align=center] Figure 2 Heating Furnace Production Line Demonstration System Design Flowchart[/align] 4 System Configuration After opening the KingSCADA environment and creating a project, the project screen can be created. The engineering screen is created in the user window. In the KingSCADA device toolbox, select the hardware devices used in the system and place them in the appropriate position so that the material flow in the system forms a closed loop to realize the human-machine interface [3]. The configuration screen of the heating furnace production line demonstration control system is shown in Figure 3. [align=center] Figure 3 Heating furnace production line demonstration system screen[/align] 4.1 Establishment of real-time database Data objects are the basic units that constitute the real-time database. The process of establishing a real-time database is also the process of defining data objects. The content of defining data objects mainly includes: specifying the name, type, initial value and numerical range of data variables, and determining the parameters related to data variable storage, such as storage period, storage time range and retention period [4]. The furnace temperature real-time database is shown in Figure 4. [align=center] Figure 4 Furnace temperature real-time database[/align] Temperature control of different sections in the heating furnace is the guarantee for heating the billet before rolling. In order to monitor the temperature changes of the preheating section, heating section and soaking section of the heating furnace in real time, a three-section furnace temperature curve control screen is designed as shown in Figure 5. [align=center]Figure 5 Furnace Temperature Control Screen[/align] 4.2 Animation Settings The graphic screen constructed from graphic objects is static. Animation design is needed for these graphic objects to realistically describe changes in the production site and achieve real-time process monitoring. The main method of KingSCADA for implementing graphic animation design is to establish a correlation connection between the graphic objects in the user window and the data objects in the real-time database, and set the corresponding animation attributes. The animation connection establishes the correspondence between the graphic elements of the screen and the database variables. That is, the established "monitoring center" corresponds the actions of steel feeding, steel output, steel pushing, and flame spraying on the screen to the set switch quantities, resulting in a monitoring screen reflecting the actual industrial site status. The billet movement animation attributes are shown in Figure 6. [align=center]Figure 6 Billet Movement Animation Attributes[/align] 4.3 Control Strategy The quality of a control system depends on the control strategy. The heating furnace control demonstration system strategies are divided into: start-up strategy, recovery strategy, steel pushing and output, walking beam strategy, temperature curve strategy, and stop strategy. After the system configuration is completed, the system operation and debugging are completed according to the control strategy. 5 Conclusion The KingSCADA control strategy—graphical configuration method—was used to design a demonstration system for a step-by-step heating furnace production line. Actual operation results show that the system can reflect the monitoring process of the industrial site. The configuration control software has the characteristics of high precision, strong real-time performance, simple monitoring interface, and convenient operation. It reduces the failure rate, increases the system control flexibility, and further improves production efficiency. It has high practical value. References : [1] Cao Xiaoling. Heating Furnace Process Technology Specification [S], Bayi Iron and Steel Company Document. February 2004 [2] Beijing Yacon Technology Development Co., Ltd. KingSCADA 65A Training Tutorial [M]. Beijing: May 2005 [3] Ma Guohua. Monitoring Configuration Software and Its Application [M]. Beijing: Tsinghua University Press, 2001. [4] Design and Application of Automatic Control System for Refractory Test Furnace of Building Components [J]. Journal of Instrumentation, 2005, 26(8): 827-830. Author Biographies : He Ping (1957-), female, experimentalist, engaged in laboratory teaching and research, [email protected], 13909918506; Chen Hua (1964-), female, associate professor, engaged in control theory and simulation teaching and research, [email protected]; Lou Yi (1958-), male, senior experimentalist, engaged in laboratory teaching and research, [email protected], 13579215632. Mailing Address: School of Electrical Engineering, Xinjiang University (North Campus), He Ping, 830008, China.