Closed-loop control method and device of furnace bodies in gas type production line

Abstract

The invention is applied to heating and pressure quenching of armored plates, and relates to a closed-loop control method and device of furnace bodies in a gas type production line. A double-furnace-body heating structure is adopted so that the traditional single furnace area driving mode is changed, two whole plates can be processed in the technical time, a chained closed-loop control system is formed, the production line can be run automatically, and a furnace door can be opened or closed automatically. In addition, a laser hot metal detector technology is applied to the production process of thin plates for the first time. All the operations are fed back, controlled and chained by various signals; all the operations are automatically completed under the control of computer software without manual monitoring and adjustment after an operator puts the products on a loading skid till the products are delivered to an unloading skid after the production is finished, technical parameters are cured in the production practice, which avoids the influence of various personal factors and guarantees the performances and the quality of products.

Description

technical field [0001] The invention is applied to the heating and press-quenching production of armor plates, and relates to a closed-loop control method and device for a furnace body of a gas-fired production line. Background technique [0002] In the past many years, the heating medium is mainly resistance type and fuel oil type. They have their own advantages and disadvantages. The advantages of resistance type are no pollution, high temperature control accuracy, simple equipment manufacturing, low production cost, and automatic temperature control. The disadvantage is cost. Relatively high, high requirements on the power grid, low heating power, slow heating speed, low production efficiency, and greatly affected by the power supply of various regions; the advantages of fuel oil heating furnaces are fast heating speed, high production efficiency, and less impact by the regional environment. The disadvantages are that the design of the burner is backward, the air pollutio...

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Problems solved by technology

[0004] In the control of the entire production line, in the past, the furnace temperature control of the heating furnace was completely controlled manually, and the combustion of all burners was controlled manually, which was labor-intensive and the environmental conditions were poor. The entire feeding and discharging system of the deck is also completely controlled manually, and the accuracy, repeatability, and reliability all depend on the experience of the operator; the position in the furnace of the deck is controlled by a counter, and the control position, control accuracy, and program repeatability are relatively poor. ; At the same time, due to the frequent flow of personnel, it is not conducive to the sustainable development of the factory

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