| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide: an "original plate material for a heat-exchange plate" that has convexoconcave very excellent in heat conduction formed on a surface thereof and undergoes a press process to be formed into a heat-exchange plate; and a method for producing the "original plate material for a heat-exchange plate". <P>SOLUTION: The original plate material for a heat-exchange plate 4 is the original plate material made of a titanium flat plate material which has minuscule convexoconcave formed on a surface thereof, undergoes a press process as a post-process for forming heights on the millimeter order or above, thereafter is formed into a heat-exchange plate; to increase a press formed characteristic during a time of the press process, regarding the convexoconcave, the convexoconcave on the surface of the original plate material are formed in such a way that a shape parameter, which is defined by a height (μm) of a convex 5×[a width (μm) of a concave 6/a pitch (μm) of neighboring convexes 5], becomes 12 μm or below. <P>COPYRIGHT: (C)2012,JPO&INPIT |
