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US 11,801,569 B2Granted
Stopping an electroslag welding process
AssigneeEsab AB
InventorsHannes Hugo Raudsepp, Ulf Nicklas Andrén
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Abstract
Stopping electroslag strip cladding operations feeding multiple strips includes detecting, during a welding phase of an electroslag welding operation feeding a first strip and a second strip towards a molten slag pool formed on a work piece, initiation of a stop phase. Upon detection the feeding of the first strip towards the molten slag pool is stopped. Additionally, a feed direction of the feeding of the second strip is reversed to retract the second strip away from the molten slag pool.
Claims6
A method for stopping electroslag welding, comprising:
- feeding a first strip and a second strip, each of which has a thickness and a width that is larger than the thickness, towards a molten slag pool formed on a work piece, wherein the first strip and the second strip are fed during a welding phase of an electroslag welding operation;
- supplying current to the first strip and the second strip;
- receiving a signal indicative of termination of the electroslag welding operation;
- and
- in response to the received signal:
- cutting the current to the first strip and the second strip;
- stopping the feeding of the first strip towards the molten slag pool after cutting the current;
- and
- reversing a feed direction of the feeding of the second strip to retract the second strip away from the molten slag pool after cutting the current.
6 more elements
Dependencies are inferred from the claim text.