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Metal plate strip rolling quenching speed control system and method

A metal strip and speed control technology, which is applied in heat treatment process control, manufacturing tools, heat treatment equipment, etc., can solve problems such as low efficiency, inoperable roller tables, and out-of-synchronization of roller table speeds, so as to improve production efficiency and improve Accurate effect on surface quality and roll speed control

Active Publication Date: 2018-11-30
NORTHEASTERN UNIV
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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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  • Metal plate strip rolling quenching speed control system and method
  • Metal plate strip rolling quenching speed control system and method
  • Metal plate strip rolling quenching speed control system and method

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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 metal plate strip heat treatment equipment and discloses a metal plate strip rolling quenching speed control system and method. The control system is composed of high pressure zone and low pressure zone roller driving systems. The high pressure zone, low pressure zone and high-low pressure zone speed control methods are used according to different quenching cooling stages of a plate strip. The system and method realize a combined control strategy of a complex speed, an accelerated speed, forward and reverse rotation, starting and stopping of a roller of a roller quenching machine, has a high control precision, good synchronism and a low failure rate, and can meet complicated heat treatment demands of different types and different specifications of metal plate strips, and significantly improves the shape, uniformity and surface quality of the quenched and cooled plate strip.

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 Applications(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
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