Prefabricated composite metallic heat-transmitting plate unit

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

1979-05-08

1981-08-11

Lovering, Richard D.

Stock material or miscellaneous articles

All metal or with adjacent metals

Plural layers discontinuously bonded

357 81, 428614, 428620, 428929, B21D 3900, B32B 312

Patent

active

042834643

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.

REFERENCES:
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patent: 3175893 (1965-03-01), Meretsky
patent: 3351700 (1967-11-01), Savolainen et al.
patent: 3399332 (1968-08-01), Savolainen
patent: 3769179 (1973-10-01), Durose et al.

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