METHOD FOR MANUFACTURING HEAT TRANSFER PLATE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a heat transfer plate, in which a heat transfer plate of high flatness is manufactured while enhancing water tightness and air tightness of the heat transfer plate. SOLUTION: In the method for manufacturing the heat transfer plate, in a body 10 comprising a first recessed part 12 which is recessed on a surface 10a and a second recessed part 13 which is recessed on the bottom face 12a of the first recessed part 12 and causes a heat transport fluid to flow wherein the heat generated by a heat generator is transferred to the outside, a lid member 30 for sealing the second recessed part 13 is formed by fixing it by friction stir welding. The method includes: a lid member fixing process for performing friction stir welding along a butted part 40; a second recessed part sealing process in which a revolving tool G is moved along the periphery 14 of the opening of the second recessed part 13 to perform friction stir welding on a superimposed part 18; and a straightening process in which a projecting warp on the reverse side of the body 10 is straightened by actuating a bending moment that generates a tensile stress on the front side of the body 10. COPYRIGHT: (C)2010,JPO&INPIT