Apparatus for cooling a strip prior to a minispangle operation
US4548052A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1985 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | Jan 30, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2/29
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel strip (10) is conveyed through a galvanizing bath (20) of molten zinc, a zinc coating weight control device (12), and a minispangle box assembly (16). The steel strip emerges from the zinc coating weight control device (12) with a non-uniform temperature distribution across its width in which it is warmer in the center and cooler at its edges. A differential, pre-cooler assembly (18) cools the steel strip selectively and non-uniformly across its width in a manner which is complimentary to the temperature distribution thereacross. In this manner, the steel strip exits the pre-cooler assembly (18) and enters the minispangle box assembly (16) with a more uniform temperature distribution. This results in a more uniform minispangle appearance on the strip (10) as it exits the minispangle box assembly (16). The pre-cooler assembly includes a plurality of nozzle pairs (32a, 32b; 34a, 34b; 36a, 36b; 38a, 38b). The nozzles of each nozzle pair are disposed in a facing relationship on opposite sides of a work path, and include a pair of conduits (60a, 60b) which define an array of apertures (62a, 62b) therealong. A damper (66a, 66b) is provided to selectively cover the apertures in ea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.