Method for Manufacturing a Product from a Flexibly Rolled Strip Material
AssigneeMuhr und Bender KG
InventorsWolfgang Eberlein, Jörg Dieter Brecht
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Abstract
A method for manufacturing a product from a flexibly rolled strip material includes the steps of: providing a strip material made from sheet steel; flexibly rolling the strip material such that a variable thickness is produced along the length of the strip material; electrolytically coating the strip material with a metallic coating material containing at least 93% of zinc by mass after the flexible rolling; heat treating at temperature above 350° C. and below a solidus line of the coating material after the electrolytic coating; working a blank from the flexibly rolled strip material; and hot forming the blank.
Claims11
A method for manufacturing a product from a flexibly rolled strip material comprising the steps of:
- providing a strip material made from hardenable sheet steel,
- flexible rolling the strip material, wherein a variable thickness is produced along the length of the strip material,
- electrolytically coating the strip material with a metallic coating material that contains at least 93% by mass of zinc, wherein the electrolytic coating is carried out after the flexible rolling,
- after the electrolytically coating, heat treating the strip material at temperatures above 350° C. and below a solidus line of the coating material, wherein diffusion takes place between iron contained in the strip material and zinc contained in the metallic coating material so as to form a zinc-iron layer,
- working a blank from the flexibly rolled strip material, and
- hot forming the blank such that a formed and hardened product is produced.
Dependencies are inferred from the claim text.