Metal plate strip sectional type heat treatment device and technological method

A technology for heat treatment devices and metal strips, applied in heat treatment furnaces, heat treatment equipment, heat treatment process control, etc., can solve the problems of difficult realization of cooling process, limited varieties and specifications, etc., and achieve improvement of flatness of plate shape and residual stress distribution, improving the uniformity of quenching, and increasing the cooling rate of quenching

Inactive Publication Date: 2020-02-07
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems that the existing metal sheet and strip quenching heat treatment varieties and specifications are limited, and complex cooling process is difficult to realize, the purpose of the present invention is to provide a metal sheet and strip segmented heat treatment device and process method, which can effectively Improve the shape and uniformity of quenched plates, broaden the production specifications and product categories of metal plates and strips

Method used

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  • Metal plate strip sectional type heat treatment device and technological method
  • Metal plate strip sectional type heat treatment device and technological method
  • Metal plate strip sectional type heat treatment device and technological method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0033] Such as figure 1 , 4 As shown, the metal plate strip 1 is heated to the process temperature in the roller hearth heat treatment furnace 2, and after reaching the holding time, it sends a request discharge signal to the segmental heat treatment device 3, and the segmental heat treatment device 3 receives the request for discharge After the signal, the hydraulic system of the roller press quenching device 4 adjusts the roll gap between the upper roller table 6 and the lower roller table 7 to 3.8-3.9 mm, and the first three sets of roller press quenching device 4 slit nozzles 8 middle cavity 15 spray water , the total spray volume is 1500~3000m 3 / h, water spray pressure 0.8MPa, all the upper roller table 6 and lower roller table 7 of the roller press quenching device 4 rotate forward, the linear speed is 0.3-0.7m / s, the hydraulic system of the high-pressure jet quenching device 9 will move the upper roller table The roll gap between 6 and the lower roller table 7 is adj...

Embodiment 2

[0036] In this embodiment, taking the quenching heat treatment of metal plates and strips with a thickness of 200 mm and a width of 3500 mm as an example, the specific implementation plan of the segmental heat treatment device and process method for metal plates and strips is described:

[0037] Such as figure 2 , 4 As shown, the metal plate strip 1 is heated to the process temperature in the roller hearth heat treatment furnace 2, and after reaching the holding time, it sends a request discharge signal to the segmental heat treatment device 3, and the segmental heat treatment device 3 receives the request for discharge After the signal, the hydraulic system of the high-pressure jet quenching device 9 adjusts the roll gap between the upper roller table 6 and the lower roller table 7 to 205-210 mm, and the high-pressure jet quenching device 9 has two sets of slit nozzles 8 and 6 groups of close-arranged round-hole jet nozzles Both the middle chamber 15 and the side chamber 16...

Embodiment 3

[0040] In this embodiment, taking the controlled cooling and heat treatment of metal plates and strips with a thickness of 50 mm and a width of 2500 mm as an example, the specific implementation plan of the segmental heat treatment device and process method for metal plates and strips is described:

[0041] Such as image 3 , 4 As shown, the metal plate strip 1 is heated to the process temperature in the roller hearth heat treatment furnace 2, and after reaching the holding time, it sends a request discharge signal to the segmental heat treatment device 3, and the segmental heat treatment device 3 receives the request for discharge After the signal, the normal pressure continuous quenching device 11 electric lifting system 12 adjusts the roll gap between the upper roller table 6 and the lower roller table 7 to 51-55mm, and the front part of the normal pressure continuous quenching device 11 has 10-15 groups of round holes on the arc surface. The middle cavity 15 of the jet no...

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Abstract

The invention belongs to the field of metal plate strip heat treatment, and relates to a metal plate strip sectional type heat treatment device and a technological method. The device comprises a rolling type quenching device, a high-pressure jet flow quenching device and a normal-pressure continuous quenching device. The rolling type quenching device adopts hydraulic pressure to press a roller gapfor control, and constrained rolling type quenching is carried out on an extremely-thin metal plate strip. The high-pressure jet flow quenching device adopts an instantaneous large-flow cooling manner, and high-strength and high-uniformity quenching is carried out on an ultra-wide and ultra-thick metal plate strip. The normal-pressure continuous quenching device adopts cooling path control, and high-precision control over the cooling strength is achieved. The three types of quenching devices are combined and configured for use, and the sectional type heat treatment technological method is formed. The metal plate strip sectional type heat treatment device and the technological method meet the requirement for the complex heat treatment technology of various and variable-specification metalplate strips, and high-straightness, high-uniformity and high-efficiency quenching heat treatment of the metal plate strips is achieved.

Description

technical field [0001] The invention belongs to the field of heat treatment of metal plates and strips, and relates to a segmented heat treatment device and a process method for metal plates and strips. Background technique [0002] Quenching 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 quenching 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 solid solution, quenching, controlled cooling, weak water cooling, etc.). [0003] At present, conventional quenching heat treatment devices are difficult to meet the needs of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/673C21D1/667C21D11/00C21D9/00C21D9/52C21D9/46
CPCC21D1/667C21D1/673C21D9/0081C21D9/46C21D9/52C21D11/005
Inventor 付天亮王昭东邓想涛韩毅李勇李家栋张志福刘光浩
Owner NORTHEASTERN UNIV
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