Patent ID: 6838044
Filing Date: 2005-01-04
Classification: C21B,F27B,F27D

Abstract:
1. A method for manufacturing a cooling plate having a plate member, comprising the steps of: initially providing a raw ingot made of a copper material, the raw ingot having a starting thickness greater than a final thickness of the plate member; reducing the starting thickness of the raw ingot to the final thickness of the plate member, using at least one forming step; and producing coolant channels in one of the raw ingot and the plate member prior to attaining the final thickness wherein the step of reducing the starting thickness of a raw ingot is accomplished by cold rolling; the step of producing channels having circular cross-sections is subsequent to the rolling, the channels having a circular cross-section; and the step of reducing continues to reduce the ingot to the final thickness of the plate member, while the channels are deformed into coolant channels having oval cross-sections.