Claims
- 1. A method for making a molten film of metal produced by strip casting having substantially uniform thickness and properties over the width of the strip, comprising: applying a molten metal material to a revolving belt to form a metal film; and introducing forces into the metal film opposite to the direction of flow of the metal film at an angle of between 0 and 80° with respect to the vertical, wherein the forces are applied by means of a gas stream which is directed oppositely to the direction in which the strip is conveyed and the gas stream impinges on the surface of the film of metal at a speed so as to produce an indentation of at least half the thickness of the film of metal in the liquid metal at the point of incidence.
- 2. The method of claim 1, wherein the gas is collected and recycled after it has impinged on the film of metal.
- 3. The method of claim 1, wherein a reducing gas is used.
- 4. The method of claim 1, wherein the gas is an inert gas.
- 5. The method of claim 1, wherein the metal of the film has a surface tension and the gas has an effect on the surface tension.
- 6. The method of claim 1, wherein the gas is applied to the film in the form of individual jets at regular intervals.
- 7. The method of claim 1, wherein the gas is at an elevated temperature.
- 8. The method of claim 1, wherein the thickness is measured across the width of the strip, and the gas stream is activated in a controlled manner on the basis of signals from said measurement.
- 9. The method of claim 1, wherein an agent which initiates solidification is applied to the metal film which has been made more uniform.
- 10. The method of claim 9, wherein the agent which initiates solidification is a gas.
- 11. The method of claim 10, wherein the gas is an oxidizing gas.
- 12. The method of claim 1 wherein the metal is steel.
- 13. The method of claim 1 wherein the angle is from 0 to 30° with respect to the vertical.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 11 434 |
Mar 1998 |
DE |
|
Parent Case Info
This application is the National Stage Application based on PCT/DE99/00589 filed Mar. 1, 1999 designating the United States of America.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/DE99/00589 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO95/23661 |
9/8/1995 |
WO |
A |
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Number |
Name |
Date |
Kind |
4791979 |
Liebermann |
Dec 1988 |
A |
5000250 |
Feuerstacke |
Mar 1991 |
A |
5230381 |
Nara et al. |
Jul 1993 |
A |
5253699 |
Solignac et al. |
Oct 1993 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
361123453 |
Jun 1986 |
JP |
WO-9523661 |
Aug 1995 |
WO |