Method of making internally finned hollow heat exchanger

Metal working – Method of mechanical manufacture – Heat exchanger or boiler making

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Details

29890053, 29890054, 72256, 165179, 228183, B21D 5306, B23P 1526

Patent

active

050582666

ABSTRACT:
In a method of making a motor vehicle radiator, extruded hollow shapes of oval cross section provided inwardly with at least one longitudinally extending web lying transversely of the larger major axis of the oval cross section are reshaped, e.g. rolled, under pressure to a cross-sectional form of a flat profile tube having two parallel sides, soldered to cooling fins and fitted into a radiator housing. The extruded hollow shape is of light metal with a substantial oval cross section.

REFERENCES:
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patent: 4615952 (1986-10-01), Knoll
patent: 4645119 (1987-02-01), Haramaki et al.
Richard Knoll, Jr., "Drawn Light Wall Aluminum Tubing for Automotive Heat Exchangers Comes of Age in the USA", SAE Technical Paper No. 830024, 1983.

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