Water spraying system and control method for heat treatment of metal plate and strip

A control method and metal strip technology, applied in heat treatment process control, heat treatment furnace, heat treatment equipment, etc., can solve the problems of low control precision, long adjustment time, low degree of automation, etc., and achieve high control accuracy, short adjustment time, The effect of improving productivity

Active Publication Date: 2021-08-24
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problems of low control accuracy, long adjustment time and low degree of automation of the existing water spraying system for cooling heat treatment of metal plates and strips, the purpose of the present invention is to provide a water spraying system and control method for heat treatment of metal plates and strips. The system and method It can effectively improve the control accuracy and adjustment speed of water spray process parameters in the metal plate and strip cooling heat treatment process, reduce pipeline vibration, save water and energy, and meet the goal of automatic production of multiple varieties, variable specifications, and complex heat treatment processes

Method used

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  • Water spraying system and control method for heat treatment of metal plate and strip
  • Water spraying system and control method for heat treatment of metal plate and strip
  • Water spraying system and control method for heat treatment of metal plate and strip

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Effect test

Embodiment 1

[0026] In this embodiment, taking the production mode (mode 1) of small batch, multi-specification, fast-paced and continuous quenching heat treatment of metal plate and strip within the specification range of 2-100mm thick, 1000-5000mm wide, and 4-26m long as an example, the metal Specific implementation plan of water spraying system and control method for plate and strip heat treatment:

[0027] Such as Figure 1-3 As shown, when the water spray system 1 for the heat treatment of metal plates and strips does not receive the water spray signal, the cooling water with a certain flow rate, pressure and temperature enters the water inlet pipe 8 of the water diversion collector 2 from the main water supply pipeline 6, and passes through The intermediate pipeline 10 splits the flow and enters the water outlet pipeline 9, and the water pressure sensor 12 feeds back the actual water pressure to the control system 5PLC system 23, and the PLC system 23 controls the pneumatic bypass pi...

Embodiment 2

[0031] In this embodiment, the production mode (mode 3) of metal sheet and strip in the range of 2-100mm thick, 1000-5000mm wide, and 4-26m long in large batches, single specification, continuous quenching or mixed quenching / tempering heat treatment is taken as an example , to describe the specific implementation plan of the water spray system and control method for the heat treatment of metal plates and strips:

[0032] Such as Figure 1-3 As shown, when the water spray system 1 for the heat treatment of metal plates and strips does not receive a water spray signal, the embodiment is the same as that of the first embodiment. At this time, each sub-water supply pipeline 3 controls the pneumatic on-off valve 20 in the valve group 4 to close, the opening degree of the electric control valve 22 is maintained at the final opening degree when it was opened last time, and the maintenance valve 16 is opened, and each sub-water supply pipeline 3 to Jet nozzle 7 does not spray water. ...

Embodiment approach

[0037] Such as Figure 1-3 As shown, when the water spraying system 1 for the heat treatment of metal plates and strips is in a non-working state, the main water supply pipeline 6 stops water supply, the opening of the bypass pipeline 15 pneumatic control valve 21 is adjusted to the fully open position, and all sub-water supply pipelines 3 are overhauled The valve 16 is closed, and the cooling water in the diverter water collector 2 is emptied. Disassemble the conical filter 18, check the blockage and clean it up, dismantle the manhole 11 of the diverter water collector 2, check and clean up the internal impurities and blockage of the diverter water collector 2. Before putting into use again, the opening degree of the pneumatic regulating valve 21 of the bypass pipeline 15 is adjusted to the fully open position, all the sub-water supply pipelines 3 maintenance valves 16 are closed, and the exhaust pipeline 14 of the diversion water collector 2 is opened. Cooling water at high...

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Abstract

The invention belongs to the field of heat treatment of metal plates and strips, and discloses a water spray system and a control method for the heat treatment of metal plates and strips. The system includes diversion water collector, diversion water supply pipeline, control valve group, and control system. The control method includes water pressure adjustment method and water flow adjustment method. Constant pressure water supply, three control valve group configuration modes are designed according to the variety and specification of metal plate and strip material, production rhythm and heat treatment process, and the double closed-loop control of water pressure and water flow is realized. The invention satisfies the requirement of precise control of the water flow, water pressure and cooling path of the water spray system with multiple varieties, variable specifications, complex heat treatment process and production rhythm, and has fast adjustment speed, good stability, water saving and energy saving, high degree of automation, and realizes High flatness, high uniformity and high efficiency heat treatment of metal plate and strip.

Description

technical field [0001] The invention belongs to the field of heat treatment of metal plates and strips, and relates to a water spray system and a control method for the heat treatment of metal plates and strips. Background technique [0002] Heat treatment is a key process to improve the comprehensive properties of metal sheets and strips, especially in improving its strength, toughness, corrosion resistance, high temperature performance, fatigue performance, and processing performance. There are many types of metal plates and strips that adopt heat treatment (such as plain carbon steel, stainless steel, aluminum alloy, titanium alloy, high-temperature alloy, etc.), the specification span is large (thickness 2-300mm, width 800-5000mm), and the heat treatment process is complicated (such as positive fire, tempering, solid solution, quenching, controlled cooling, weak water cooling, etc.). [0003] Cooling is an important heat treatment process for metal sheets and strips. By...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/667C21D9/573C21D11/00
CPCC21D1/667C21D9/573C21D11/005C21D9/52Y02P10/25
Inventor 付天亮宋国志高俊国曳彦奇贾志伟苏琳刘光浩
Owner NORTHEASTERN UNIV LIAONING
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