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Abstract

A method for manufacturing a metal composite component is characterized in that the composite component (60) is provided with at least two sections (61, 62, 63) of different magnetization, at least two sections (61, 62, 63) being situated on the one-piece component (60) in direct succession. The starting material for manufacturing the composite material (60) is a semi-austenitic steel, which is provided as a cylindrical blank. The blank is subsequently shaped into an intended shape of the composite component (60) and rendered magnetizable in a multistage forming and/or heat treatment process, the heat treatment being performed in such a way that the component has a saturation polarization J_s=0.9-1.5 T. This is followed by a local heat treatment in a partial area under simultaneous cooling of the areas of the composite component (60) where the magnetic properties are not to be changed, in order to define strictly delimited transitional areas between the different areas of magnetization (61, 62, 63). The composite component (60) is suitable in particular for use in electromagnetic valves, for example, including in fuel injectors of internal combustion engines.

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