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Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen

A technology of electromagnetic inductors and heat treatment equipment, applied in heat treatment equipment, induction heating, heat treatment furnaces, etc., can solve problems such as increased heat loss

Active Publication Date: 2011-08-10
菲弗兹塞莱斯公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] - heat loss increases because the length of the tubes in the field increases, whereby additional losses occur in the magnetic field; and

Method used

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  • Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen
  • Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen
  • Thermal isolation screen for isolating an electromagnetic inductor, and heat treatment installation comprising such a screen

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Embodiment Construction

[0034] Attached figure 1 A linear shaft furnace H is schematically shown for the heat treatment of a metal strip 1 , in particular a steel strip, in continuous motion at a constant or variable speed. In the example shown, the belt 1 moves vertically between two rollers, a lower roller 2 and an upper roller 3 respectively. This example is not limiting, ie the belt 1 can also move horizontally in a horizontal furnace.

[0035] The furnace is generally in the shape of a prism with a rectangular cross-section, and its internal space is isolated from the external atmosphere. The composition of the gas mixture in the furnace can vary according to the zone considered. This gas mixture contains a relatively high proportion of hydrogen, which facilitates heat exchange.

[0036] The furnace H comprises at least one heating section 4, arranged on each side of the belt 1, with half-inductors 5a, 5b with transverse or pseudo-transverse flux. A pair of half inductors form a heating indu...

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PUM

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Abstract

Thermal isolation screen transparent to the magnetic flux, intended to isolate a transverse-field or pseudo-transverse-field electromagnetic inductor from the radiation from a heated product (1), the thermal screen being composed of a matrix of blocks (7) made of thermally insulating material and of a plurality of tubes (8) cooled by the circulation of a fluid, these tubes being imprisoned in said matrix of blocks, the tubes and blocks being held in place on a support. The screen comprises, on the rear of the blocks, heat-conducting means (10) placed so as to intercept the heat flux passing through the blocks, these conducting means being thermally coupled to the cooled tubes (8) in order to discharge the heat flux into the tubes.

Description

technical field [0001] The present invention relates to flux permeable cooling heat shields for isolating electromagnetic inductors with transverse fields or pseudo-transverse fields from radiation from heated products. The heat shield consists of an array of blocks of insulating material and a plurality of metal tubes cooled by fluid circulation, these tubes being enclosed in said array of blocks, and the array of tubes and blocks being fixed on a support, The support is located on the side opposite to the product to be heated. [0002] More particularly, but not exclusively, the present invention relates to heat shields for use in electromagnetic induction devices for heating a continuously moving steel strip. Background technique [0003] EP1349431 discloses a cavity with a heat shield and a support body consisting of an outer shell. [0004] The material of the support is electrically insulating and consists, for example, of composites, glass fibers and epoxy or other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/56H05B6/36H05B6/02F27D1/12
CPCF27B9/36F27D99/0006C21D9/561H05B6/36C21D9/60C21D1/42C21D9/56H05B6/365Y02P10/25
Inventor P·勒尔J-Y·雷恩J·赫勒古阿施J·L·比甘
Owner 菲弗兹塞莱斯公司