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Automatic control system for moderate-thickness plate roller quenching machine

An automatic control system, thick plate roll technology, applied in quenching devices, heat treatment process control, manufacturing tools, etc., can solve the problems of low automation level and poor control accuracy, reduce manual intervention, improve production efficiency, save money cost effect

Active Publication Date: 2012-04-11
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an automatic control system for a medium-thick plate roller quenching machine. Aiming at the current problems of low overall automation level and poor control accuracy of the medium-thick plate roll-type quenching machine, an integrated automatic control system for the quenching machine is established to realize Fast and accurate release of quenching regulations, accurate and timely records of quenching performance, safe and automatic control of the quenching process, and smart and easy operation of the quenching machine

Method used

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  • Automatic control system for moderate-thickness plate roller quenching machine
  • Automatic control system for moderate-thickness plate roller quenching machine
  • Automatic control system for moderate-thickness plate roller quenching machine

Examples

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Effect test

Embodiment 1

[0031] The technical scheme of the automatic control system of the plate roller quenching machine in the quenching (solution) heat treatment mode and the continuous production mode.

[0032] Such as Figure 1~3 As shown, when the PLC system 5 of the heat treatment furnace receives the furnace entering signal, the signal is transmitted to the quenching machine PLC6 through the PLC communication between equipments, and the number of the steel plate entering the furnace is also transmitted at the same time. Quenching machine PLC6 passes the steel plate number into the furnace to quenching machine L27, and the latter inquires the plan information of the steel plate into the furnace from L311 by virtue of the plate number, and stores the information in the quenching machine plan and performance database 12. The quenching machine L27 queries the quenching machine model database 14 for physical property parameters, model parameters and default values ​​based on the steel type, alloy ...

Embodiment 2

[0034] The technical scheme of the automatic control system of the plate roller quenching machine in the normalizing or annealing heat treatment mode and the empty production mode.

[0035] The trigger mode, communication mode, tracking system operation mode, and database reading mode of this example are the same as those of the previous example, and will not be repeated here. The difference is that if the heat treatment mode in the steel plate information obtained by the quenching machine L27 is normalizing or annealing, the calculation of the quenching schedule is not performed, and the air cooling schedule is directly formulated, and the schedule is saved in the queue database 13 of the quenching machine. The air cooling procedure is: the frame of the quenching machine is raised to 400mm, the speed of the quenching machine is 0.6m / s, the upper nozzles of all quenching sections are closed, and the lower nozzles are kept at 50m for each quenching section 3 / h Constant running ...

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Abstract

The invention discloses an automatic control system for a moderate-thickness plate roller quenching machine, and belongs to the technical field of heat treatment automatic control. The system consists of a PLC (Programmable Logic Controller) and interface system, a process control system and a track communication system, and is characterized in that: 1, water spray parameters are accurately controlled by using an intelligent algorithm to realize flow and pressure double-closed-loop control; 2, calculation is performed through procedure distribution, function trigger and quenching parameters to realize high-accuracy temperature control, plate shape control and model self-study; 3, a communication intermediate packet developed on the basis of TCP / IP (Transmission Control Protocol / InternetProtocol), OPC (Optical Proximity Correction) and PROFIBUS-DP can realize smooth data connection of the quenching machine and the MES (Manufacturing Execution System) as well as upstream and downstream equipment and meanwhile realize accurate transfer of data between subsystems; and 4, a trigger mechanism is adopted to realize queue macro tracking and position micro tracking of a steel plate of aquenching region. By adopting the system, the problems of complex control and low control accuracy of the roller quenching machine are solved well, and automatic and one-key operation of the roller quenching machine is realized.

Description

technical field [0001] The invention relates to the field of automatic control of heat treatment process, in particular to a medium-thick plate roller quenching machine equipment and process automatic control system. Background technique [0002] The medium-thick plate roller quenching machine has high cooling intensity, complicated process technology, and great difficulty in controlling the quenching process. Relevant equipment, processes and control systems have been monopolized by a few foreign companies for a long time, resulting in my country's plate quenching equipment and technology being completely dependent on imports before 2008. The imported equipment control system puts too much emphasis on the direct, stable and reliable control of the online control unit, ignoring the logical control and quick response of the PLC system, the precise automatic control of the process, the accurate and reliable operation of the tracking communication system, and the scientific man...

Claims

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Application Information

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IPC IPC(8): C21D11/00C21D1/18C21D1/62
Inventor 李勇付天亮王昭东袁国王国栋韩毅田勇
Owner NORTHEASTERN UNIV
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