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Means and method for heating

A heating furnace and heat technology, applied in the direction of electric furnace heating, furnace heating elements, lighting and heating equipment, etc., can solve the problems of efficiency reduction and achieve the effect of energy saving and rapid heat balance

Inactive Publication Date: 2003-03-05
SANDVIK AB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this temperature, it has been found that there is a problem of "reverse radiation", so the air cooling of the lamp and reflector must be sufficient, so the efficiency will be reduced

Method used

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  • Means and method for heating
  • Means and method for heating
  • Means and method for heating

Examples

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Embodiment Construction

[0019] A heating device according to the principles of the present invention comprises Figure 1-5 components shown in . The main parts consist of a bottom part 1 in which the blank to be heated is placed. The bottom part has a bottom surface 2 which is surrounded by raised peripheral edges 3 which form the four side walls of the bottom part. The blank is preferably placed on some type of support so that heat radiation can be reflected by the bottom surface of the bottom part to the underside of the blank. Afterwards, one or more top pieces 4 are placed to cover the bottom piece. The side walls 5, 6, 7, 8 of the top part are inclined so that the facing side walls extend inwardly towards each other. At the uppermost point of the top part, one or more radiating elements are arranged, which extend in the space formed by the sloping side walls. The radiating element is mounted in the holder 10 and forms an assembly therewith. A preferred configuration is that the radiating el...

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PUM

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Abstract

The present invention is for a method for heating of blanks and other heating of metallic materials in a furnace before working where heat is transferred to a blank in the furnace by radiation. According to the method of the invention an important part of the radiation hits the walls of the furnace and are reflected there before it is transferred to the blank. Preferably the furnace is designed so that heat radiation is reflected also at the bottom of the furnace. At least 50% of the radiation which reaches the blank ought to be reflected radiation. The invention is also for a furnace for beating of blanks and other comprising at least one furnace bottom part (1) and at least one furnace top part (4) having side walls (5, 6, 7, 8) where at least parts of the side walls of the top parts are inclined so that opposite walls are inclined towards each other.

Description

technical field [0001] The present invention relates to a method and apparatus for effecting blank heating and other heating of metallic material in preparation for subsequent processing. Background technique [0002] Slabs of steel or other alloys that are to be rolled or otherwise worked are usually heated before being subjected to these operations, a process known as billet heating. In addition, sheet stock made of steel, aluminum or other metals is heated before rolling or other processing. The blank temperature that needs to be achieved depends on the alloy composition and other factors, and the heating temperature can be from about 400°C for some aluminum alloys to 1200-1300°C or more for alloys used for high temperature operations. In order to create good conditions for the subsequent process, the heating temperature of the blank should be as uniform as possible. [0003] The use of furnaces with burners or resistive elements as heat sources is well known in the art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/34F27B3/16F27B3/20F27B17/00F27D11/02F27D99/00
CPCC21D9/0081F27D11/02F27D2099/0011F27B17/0016F27D2099/0008C21D1/34
Inventor 马茨·松德贝里拉尔斯-约兰·约翰松海伦娜·约翰松扬·安德森
Owner SANDVIK AB
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