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Steel plate heat treatment device and method

A heat treatment device and steel plate technology, applied in heat treatment furnaces, heat treatment equipment, heat treatment process control, etc., can solve the problems of increased manufacturing costs, low productivity, cracked welds, etc., and achieve the effect of increasing productivity and increasing production speed

Inactive Publication Date: 2020-01-10
POHANG IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In this conventional method, the strength of the welded part is different from that of the base material due to the welded part, which adversely affects the design of the metal mold during processing, and there is a problem that the welded part breaks when molded.
[0008] Also, the transportation cost for processing due to the difference in thickness is high, and the rough material is produced by using batch processing (Batchprocessing) instead of using a continuous process, so not only the productivity is low, but also the manufacturing cost increases

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  • Steel plate heat treatment device and method
  • Steel plate heat treatment device and method
  • Steel plate heat treatment device and method

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Embodiment Construction

[0034] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the idea of ​​the present invention is not limited to the illustrated embodiment, and those skilled in the art who understand the idea of ​​the present invention can easily propose other retrograde inventions or other inventions by adding, changing, deleting other components, etc. Other embodiments are included in the scope of the idea of ​​the present invention, and this should also be regarded as being included in the scope of the idea of ​​the present invention.

[0035] Also, components having the same functions within the same conceptual range shown in the drawings of the respective embodiments are described using the same reference numerals.

[0036] The apparatus and method for heat-treating a steel sheet of the present invention is an invention for heat-treating a steel sheet S as a blank material by a laser, by forming dif...

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Abstract

A steel plate heat treatment device according to an embodiment of the present invention may include: a main body unit arranged on the moving path of continuously produced steel plates; The line irradiation units irradiate laser beams to the surface of the steel plate in a line shape in the width direction of the steel plate to heat-treat the steel plate, and the energy irradiated by each line irradiation unit is different from the energy irradiated by at least one other line irradiation unit.

Description

technical field [0001] The present invention relates to an apparatus and method for heat-treating a steel plate, and more specifically, is an invention of heat-treating a steel plate as a blank material by a laser. Background technique [0002] Generally, continuously produced steel sheets are passed through a heat treatment furnace (Annealing Furnace) and cooling devices to change the properties of the steel sheets. However, this process requires a long time for heating, holding and cooling, and requires a large amount of productivity and cost even affecting the interior of the steel sheet and the like. [0003] In recent years, in order to solve such a problem, an attempt has been made to irradiate the surface of a steel sheet with energy with a high energy density, and various methods have been introduced. [0004] The above-mentioned method is a method and technique of scanning focusing energy, that is, zero point energy, on the surface of the steel sheet, and the proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D6/00C21D1/09C21D10/00C21D11/00
CPCC21D6/00C21D9/46C21D1/34C21D8/0252C21D8/0294C21D8/0205C21D8/0242C21D9/0062C21D9/563C21D9/564C21D1/09
Inventor 权英燮
Owner POHANG IRON & STEEL CO LTD