IIAbstractWith the rapid development of automationcontroltechnology, we have more kinds of advance device and technology to choose in building the modern factory,and we can use a variety of advanced technology and equipment to improve the level of control and the effect of modern automation technology puter as the core , aided byPLC,electricalequipment,smart actuators,fieldbus, intelligent instrument, engineers stood etc, and those tasks grade complex DCS control system,all levels trenchant between programmable controllerhas e the first choice control devicebecause of its high reliability,the strongfunction, flexible, and other characteristicsin the control plant site environment now .Based on the design of automatic control system of walking beam reheating furnace of Hangzhou Iron & Steel Plant, this paperintroduces the heat treatment process flowof crawler-board and automatic control requirements, the control system and hardware, software system function position principle, control mode of implementation and engineering system , the paperintroducesthe engineering design and selection of equipmentfor electrical heating furnace temperature control, flow control, oxygen potential control, the atmosphere control, board speed controlinthe heat treatment process flowofcrawler-board .The actual production operation results show that the design of the system and control method can obtain satisfy the product quality requiredof the surface hardness and deformationof crawler-board , and can guarantee the safe and stable : heat treatmentfurnace,PLC basic automation control,the control systemIII目录摘要...................................................................................................................................................IAbstract.......................................................................................
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