Method for processing heated material

Patent metadata

Field	Value
Publication number	US-10215510-B2
Application number	US-201415035616-A
Country	US
Kind code	B2
Filing date	Sep 11, 2014
Priority date	Nov 12, 2013
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

The invention relates to a method for processing heated material ( 1 ), wherein the material is guided along a conveying path and is covered and protected against heat loss in the region of the conveying path by at least one reflector element ( 2 ), wherein the reflector element ( 2 ) is cooled by means of a liquid. According to the invention, in order to guarantee efficient cooling of the reflector without costly measures, the liquid is glycol or comprises glycol or the liquid is alcohol or comprises alcohol or the liquid is thermal oil.

First claim

The invention claimed is:

1. A method for processing hot metal slabs, sheets and strips and similar material ( 1 ), wherein the material is guided along a conveying path and is covered and protected against heat loss in the region of the conveying path by at least one reflector element ( 2 ), wherein the reflector element ( 2 ) is cooled by means of a liquid, characterized in that
the reflector element includes a reflector material having a reflectivity of greater than 70%,
that the liquid is glycol or comprises glycol or in that the liquid is alcohol or comprises alcohol, or in that the liquid is thermal oil, and that during cooling, the liquid is heated only to a maximum temperature at which it still will not produce vapor pressure,
that the liquid is conducted within a closed circuit through the reflector element ( 2 ), thereby passing one heat exchanger ( 3 ), and
that the liquid is held at a predefined temperature by controlling a liquid flow rate based on an actual temperature of the reflector element as the liquid passes through the closed circuit, so that the liquid is kept from evaporation, wherein a volumetric flow rate is used as a control variable.

2. The method according to claim 1 , characterized in that the liquid is a mixture of glycol and water.

3. The method according to claim 1 , characterized in that the liquid is conducted in the closed circuit through a heat accumulator element.

4. The method according to claim 1 , characterized in that the temperature of the liquid is controlled in a range of greater than 80° C. and less than 400° C.

5. The method according to claim 4 , characterized in that the temperature of the liquid is controlled such that the liquid will not evaporate.

6. The method according to claim 1 , characterized in that the heat drawn from the liquid by the heat exchanger ( 3 ) is supplied to a secondary process.

7. The method according to claim 1 , characterized in that the at least one reflector element ( 2 ) is subjected to a cleaning process after a period of use has elapsed.

8. The method according to claim 7 , characterized in that the cleaning process comprises a blowing-off of the reflector surface ( 4 ) with a gas, in particular air.

9. The method according to claim 7 , characterized in that mechanical means, in particular a cleaning brush, are used for cleaning the reflector surface ( 4 ).

10. The method according to claim 7 , characterized in that liquid and/or chemical cleaning agents, in particular ethanol or nitric acid, or a mixture of cleaning agents and water are used for cleaning the reflector surface ( 4 ).

11. The method according to claim 1 , characterized in that a material with a thermal radiation range having a wave length between 0.5 and 10 μm is used as the reflector material.

Assignees

• Sms Group Gmbh

Inventors

• Seidel Juergen
• Sudau Peter
• Anders Denis
• Alken Johannes
• Kipping Matthias

Classifications

• F28F9/20 Primary

  Arrangements of heat reflectors, e.g. separately-insertible reflecting walls · CPC title

• Y02P70/127

  Cross-Sectional Technologies · mapped topic

• B21B45/008 Primary

  Heat shields · CPC title

• B65G13/00

  Roller-ways (storage devices comprising roller-ways B65G1/02; endless-chain conveyors comprising load-supporting rollers B65G17/00; rollers or arrangements thereof B65G39/00) · CPC title

• Y02P70/129

  Cross-Sectional Technologies · mapped topic