Method and device for producing a metal component

摘要

The invention relates to a method for producing a metal structural component, in particular a vehicle structural component, in which a steel part is hot formed and is hardened at least over sections by contact with a tool surface, in which the steel part is during the hardening cooled in at least two partial regions at different cooling rates, so that the partial regions after the hardening differ in their microstructure, wherein the cooling rates differing from one another are produced by sections of the tool surface corresponding to the partial regions of the steel part, which differ from one another as regards their thermal conductivities. The invention also relates to a further method for producing a metal structural component, as well as a tool and a batch furnace.

主权项

1. A method for producing a metal structural component, for use as a vehicle structural component, comprising the steps of:
forming a steel part; hardening the steel part at least over sections by contact with a tool surface; and wherein the step of hardening includes the step of cooling the steel part in at least two partial regions with cooling rates differing from one another, so that the at least two partial regions differ after the step of hardening as regards their microstructure and wherein the cooling rates differing from one another are produced by at least two sections of the tool surface, corresponding to the at least two partial regions of the steel part, that differ from one another in their thermal conductivities, wherein at least one of the at least two sections of the tool surface has been coated so as to provide a surface coating that reduces or increases the thermal conductivity.