Patent ID: 8782892

Claim:
A method of manufacturing a heat transfer plate where a heat medium pipe configured to circulate a heat medium for heating or cooling a heat component is housed inside a plate-form base member, the method comprising the steps of: inserting the heat medium pipe in a concave groove having a depth longer than an outer diameter size of the heat medium pipe, wherein the concave groove is open to an obverse of the base member; inserting a lid plate in an opening of the concave groove positioned at an upper portion of the heat medium pipe within the concave groove, wherein the lid plate is protruded more than the obverse of the base member; deforming the heat medium pipe plastically to make the heat medium pipe abut with the concave groove by pressing a protruded top end of the lid plate toward a bottom portion of the concave groove as far as the obverse of the base member; and fixing the lid plate to the base member by friction stirring joining.