Method for producing a hardened profile part

Details Method for producing a hardened profile part Method for producing a hardened profile part

2004-06-09

2010-11-16

Jones, David B (Department: 3725)

Metal deforming

With 'coating' of work

Metal coating

C072S046000, C072S168000, C072S177000, C072S202000, C072S342600, C072S364000, C148S262000, C205S192000, C205S220000, C205S222000

Reexamination Certificate

active

07832242

ABSTRACT:
The invention relates to a method for producing a hardened profiled structural part from a hardenable steel alloy with cathodic corrosion protection. The method includes applying a coating to a sheet made of a hardenable steel alloy, wherein the coating comprises zinc, and the coating further comprises one or several elements with affinity to oxygen in a total amount of 0.1 weight-% to 15 weight-% in relation to the total coating. After applying the coating, the coated sheet steel is roller-profiled in a profiling device. Thereafter, the coated sheet steel is heated to a structural change required for hardening. A skin made of an oxide of the element(s) with affinity to oxygen is formed on the surface of the coating. After sufficient heating the sheet is cooled, wherein the rate of cooling is set in such a way that hardening of the sheet alloy is achieved.

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