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US 8,772,674 B2Granted
Method of heating plated steel plate
AssigneeAsteer Co., Ltd.
InventorKouji Shimotsu
Life of this patent
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Abstract
When applying a current to a plated steel plate, plating often biases. In the present invention, when applying a current, the current is applied with a flux guiding member arranged in proximity to a side surface of the plated steel plate. The direction of the magnetic flux at the side surface of the plated steel plate is corrected, and the bias of the plating is efficiently suppressed.
Claims4
A method of heating a plated steel for quenching by directly applying a current to the plated steel plate, the method comprising the steps of:
- connecting electrodes to the plated steel plate including a pair of side surfaces extending in a direction along which the applied current flows;
- arranging a pair of solid metal blocks having high magnetic permeability, which have wall surfaces orthogonal to an upper surface of the plated steel plate, along the pair of side surfaces of the plated steel plate with an insulating gaps provided between the pair of side surfaces and the wall surfaces of the pair of solid metal blocks;
- and
- applying the current to the plated steel plate.
1 more element
Dependencies are inferred from the claim text.