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A system and method for controlling the speed of roller quenching of metal plates and strips

A metal strip, speed control technology, applied in the direction of heat treatment process control, manufacturing tools, furnaces, etc., can solve the problems of low use efficiency, low production efficiency, asynchronous roller speed, etc., to improve surface quality and improve production efficiency , The precise effect of roller speed control

Active Publication Date: 2019-07-16
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: ① large sprocket gap, poor synchronization of roller tables, difficulty in forward and reverse regulation, low speed and acceleration control accuracy, and it is impossible to realize complex sheet and strip movement control strategies; ② all roller tables can only be controlled at the same time Start / stop or forward and reverse, unable to achieve interlock control with the upstream and downstream roller tables, and the unloaded strip roller table has idling phenomenon, which wastes electric energy; ③The chain is broken, rusted, and has poor reliability; ④The main motor or If the reducer breaks down, all the roller tables cannot operate, and the use efficiency is low; ⑤ The roller table speed is not synchronized, which may cause problems such as scratches and local overload, which will affect the service life
In view of the above shortcomings, it is necessary to invent an accurate, reliable and flexible roller table transmission system and method for the roller quenching machine to solve uneven cooling, poor plate shape, high equipment failure rate and low production efficiency in the roller quenching and cooling process of strips and other issues to achieve efficient and stable production

Method used

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  • A system and method for controlling the speed of roller quenching of metal plates and strips
  • A system and method for controlling the speed of roller quenching of metal plates and strips
  • A system and method for controlling the speed of roller quenching of metal plates and strips

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Effect test

Embodiment 1

[0024] Embodiment 1, this embodiment provides the implementation process of a metal plate and strip roller quenching speed control system of the present invention, such as figure 1 shown. Roller table transmission system 14 in the high-pressure area. Each roller table transmission motor 4 controls the lower load-bearing roller table 2 in the high-pressure area and the upper restraint roller table 3 in the high-pressure area through a separate transmission connection mechanism 6. Start and stop, the actual speed of each roller table is measured by the roller table encoder 7 installed on the roller table transmission motor 4 and fed back to the corresponding transmission frequency conversion system 5, the transmission frequency conversion system 5 is based on the feedback roller table speed to the roller table transmission motor 4 Implement closed-loop vector control; roller table transmission system 15 in the low pressure area, each roller table drive motor 4 controls each roll...

Embodiment 2

[0025] Embodiment 2, this embodiment provides the implementation process of a method for controlling the speed of roller quenching of metal plates and strips according to the present invention, such as figure 1 , 2 , 3, 4, and 5, use 60mm thick, 3000mm wide, and 8m long metal strips as an example to illustrate the implementation process. After the metal plate and strip 1 is heated, the initial speed v of the quenching and cooling process 1 When reaching the roller table 12 on the upstream side of the roller quenching machine, the roller table transmission system 14 in the high-pressure zone rotates forward at the same speed as the first bearing roller table 2 in the lower part of the high-pressure zone. The upper constraining roller table 3 in the high-pressure zone reverses at the same speed, and sends the metal plate and strip 1 into the high-pressure zone roller transmission system 14; when the metal plate and strip 1 reaches the high-pressure zone roller transmission system...

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Abstract

The invention belongs to the technical field of heat treatment equipment for metal plates and strips, and discloses a roller-type quenching speed control system and method for metal plates and strips. The speed control methods for the high-pressure area, low-pressure area, and high-low pressure area are respectively implemented in each stage. The system and method can realize the complex speed, acceleration, forward and reverse, start-stop combination control strategy of the roller table of the roller quenching machine, with high control precision, good synchronization and low failure rate, and can meet different specifications and different types of metal sheets and strips Requirements for complex heat treatment process can significantly improve the shape, uniformity and surface quality of quenched and cooled plates and strips.

Description

technical field [0001] The invention belongs to the technical field of heat treatment equipment for metal plates and strips, and relates to a roller quenching speed control system and method for metal plates and strips. Background technique [0002] The roller quenching machine has strong cooling capacity, uniform cooling, high production efficiency, good shape of the plate and strip after cooling, equipment length is not limited by the length of the plate and strip, and can realize continuous production. It can be used for carbon steel, stainless steel, special alloy, Titanium alloy, aluminum alloy and other metal plates and strips are produced by quenching, solid solution, and controlled cooling. The thickness range of plate and strip production is 2-300mm, the width range is 1-5m, and the length range is 3-30m. It is the main form of cooling equipment for large-scale heat treatment lines. . The speed of the roller table is one of the main process parameters of the roller...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D11/00C21D9/52C21D1/18
CPCC21D1/18C21D9/52C21D11/00
Inventor 付天亮韩毅王昭东李勇田勇王丙兴李家栋邓想涛
Owner NORTHEASTERN UNIV LIAONING
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