Prefabricated composite metallic heat-transmitting plate unit

Abstract

A prefabricated composite metallic plate unit for transmitting 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.times.10.sup.-6 /.degree.C. over a temperature range of about 30.degree. C. to 550.degree. C. and a tensile strength of at least 35 kg/mm.sup.2. A plurality 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 heat-transfer coefficient of at least about 0.3 cal./cm.sup.2 /cm/sec./.degree.C.

Dependencies are inferred from the claim text.