Method and system for the detection of surface defects on a metal product as it is being continuously cast
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 2009
Grant Date -
Dec 13, 2007
app pub date -
Oct 29, 2004
filing date -
Nov 18, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method of detecting surface defects on a continuously-cast crude metallic product, such as a steel slab (4). According to the invention, a sensor (10) is used to detect surface defects by means of eddy currents, said sensor consisting of a matrix comprising at least two rows (22, 24) of at least three adjoining measuring cells (21) which can be controlled by a multiplexing control unit (12). Moreover, each cell can generate eddy currents at the surface of the slab and, alternately, detect eddy currents in said surface. The inventive method comprises a step consisting in controlling a first transmitting cell and a second receiving cell from the same row, but which are separated from one another by at least one inactive cell.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully