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AssigneeTata Steel Ijmuiden B.V.
InventorsGuido Cornelis Hensen, Wico Cornelis Verloop
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A method for manufacturing a coated part having very high mechanical properties using hot forming techniques. The method includes the steps of 1—providing a steel strip; 2—coating the steel strip with a layer of zinc or zinc alloy; 3—heating the coated steel to a temperature between 300° C. and the Ac1 temperature of the steel; 4—cooling the coated steel; 5—cutting a blank from the strip after step 1, 2, 3 or 4; 6—heating the blank to a temperature above the Ac1 temperature of the steel; 7—hot forming the blank into a part; and 8—hardening the hot formed part. The method can also be performed without step 4. The method can also be used for the indirect hot formed method. The method also relates to a method for manufacturing a coated steel strip, and to a coated steel strip, blank or part and a hot formed part.
A method for manufacturing a coated part having very high mechanical properties using hot forming techniques, comprising the following steps of:
A method for manufacturing a coated part having very high mechanical properties using hot forming techniques, comprising the following steps of:
Method A method for manufacturing a coated steel strip for use in the hot forming of a part, comprising the following steps:
(canceled)
A coated steel strip, blank or part provided with a coating of zinc or zinc alloy, wherein the outer layer of the coating on average contains more than 5 weight % Fe over a depth of 3 μm.
Dependencies are inferred from the claim text.