Prefabricated composite metallic heat-transmitting plate unit

Details Prefabricated composite metallic heat-transmitting plate unit Prefabricated composite metallic heat-transmitting plate unit

B - Operations, Transporting

21

D

356/95

B21D 39/00 (2006.01) F28F 13/14 (2006.01) F28F 21/08 (2006.01) H01L 23/373 (2006.01)

Patent

CA 1136289

Docket 523.01 LBD:CBD A PREFABRICATED COMPOSITE METALLIC HEAT-TRANSMITTING PLATE UNIT ABSTRACT OF THE DISCLOSURE A prefabricated composite metallic plate unit for trans- mitting heat from a heat source to a heat-absorbing medium and having a relatively high heat-transfer coefficient comprises a pair of high-tensile-strength plate members of a cobalt-nickel- iron or similar type alloy having a temperature coefficient of expansion of about 6.2 x 10-6/°C over a temperature range of about 30°C to 550°C and a tensile strength of at least 35 kg/mm2. A plu- rality of holes extend through each of the plate members and have an aggregate area of about 70% of the surface areas thereof, such holes numbering about 2000 per square inch. A layer of relatively malleable metallic material is interposed between the plate members and fills the holes. Such metallic material is a metal of the group consisting of copper, aluminum, gold, silver, and an alloy of any of such metals. The resulting composite metallic plate unit has a beat-transfer coefficient of at least about 0.3 cal./cm2/cm/sec.°C.

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