| 摘要 |
A method of producing a heat transfer device comprising a base (1) and a number of flanges (2) projecting from the base (1), the device being formed with the flanges in a first mutual relation in a first operation and the base being subjected to at least partial deformation in a second operation so that the flanges projecting from the deformed portion of the base are brought into a second mutual relation, the flanges being arranged at shorter mutual distances in the second relation than in the first relation. |
