Method for the production of a cooling plate

A method for the production of a cooling plate from a material having thermal conductivity, said method comprising:

• placing a workpiece in a form of a flat material blank with uniform material thickness into a tool;
• pressing, as a peripheral edge of the workpiece is held down by an outer punch of the tool, the workpiece in a first stage by an inner punch of the tool to form, in cooperation with pin forming openings of the tool, pins upon an effective surface swept by a coolant, such that the pins protrude perpendicular over a base area of the workpiece, thereby creating a material depression zone in the base area of the workpiece;
• and
• pressing, as the workpiece with the formed pins is held down by the inner punch of the tool, the peripheral edge of the workpiece in a second stage by the outer punch such as to form a radially extending, flat peripheral edge of reduced material thickness in surrounding relation to the pins, which transitions flush into the material depression zone after the pins have been formed, wherein the flat material blank is copper, aluminum, or an alloy thereof.