Invention Grant
- Patent Title: Method and device for hot-dip coating a metal strand
- Patent Title (中): 用于热浸镀金属线的方法和装置
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Application No.: US10536872Application Date: 2003-11-15
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Publication No.: US07662438B2Publication Date: 2010-02-16
- Inventor: Rolf Brisberger , Bernhard Tenckhoff , Holger Behrens , Bodo Falkenhahn , Walter Trakowski , Michael Zielenbach , Robert Jürgens
- Applicant: Rolf Brisberger , Bernhard Tenckhoff , Holger Behrens , Bodo Falkenhahn , Walter Trakowski , Michael Zielenbach , Robert Jürgens
- Applicant Address: DE Düsseldorf
- Assignee: SMS Siemag Aktiengesellschaft
- Current Assignee: SMS Siemag Aktiengesellschaft
- Current Assignee Address: DE Düsseldorf
- Agent Friedrich Kueffner
- Priority: DE10255994 20021130
- International Application: PCT/EP03/12792 WO 20031115
- International Announcement: WO2004/050940 WO 20040617
- Main IPC: B05D1/18
- IPC: B05D1/18

Abstract:
The invention relates to a method for hot-dip coating a metal strand (1), especially a steel strip, according to which the metal strand (1) is vertically guided through a container (3) accommodating the molten coating metal (2) and through a guide channel (4) disposed upstream thereof. An electromagnetic field is generated in the area of the guide channel (4) by means of at least two inductors (5) disposed at both sides of the metal strand (1) to retain the coating material (2) in the container (3). In order to stabilize the metal strand (1) in a center position in the guide channel (4), an electromagnetic field, superimposing the electromagnetic field of the inductors (5), is generated by means of at least two additional coils (6) disposed at both sides of the metal strand (1). In order to improve efficiency of the control of the metal strand in the guide channel, the center position of the metal strand (1) in the guide channel (4) is stabilized in a closed control loop by carrying out the following steps: a) detecting the position (s, s′, s″) of the metal strand (1) in the guide channel (4); b) measuring the induced current (IInd) in the inductors (5); c) measuring the induced current (ICorr) in the additional coils (6); d) influencing the induced current (ICorr) in the additional coils (6) depending on the parameters (s, IInd, ICorr) measured in steps a) to c), in order to maintain the metal strand (1) in a center position in the guide channel (4). The invention further relates to a device for hot-dip coating a metal strand.
Public/Granted literature
- US20060141166A1 Method and device for hot-dip coating a metal strand Public/Granted day:2006-06-29
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