Method of manufacturing heat-transfer wall for vapor condensatio

Details Method of manufacturing heat-transfer wall for vapor condensatio Method of manufacturing heat-transfer wall for vapor condensatio

1978-06-08

1980-03-25

Larson, Lowell A.

Metal deforming

With cutting

By composite tool

72 71, 291573A, 165133, B21D 5306

Patent

active

041943848

ABSTRACT:
A method of manufacturing a heat-transfer wall for vapor condensation comprising the step of forming on the heat-transfer surface, a number of shallow grooves substantially in parallel at a fine pitch, and then forming, on the heat-transfer surface and in the direction across said shallow grooves, a number of grooves deeper than the shallow grooves at a fine pitch by cutting and turning up the heat-transfer surface in the plowing manner. Said method may further comprise a subsequent step of curling the edges of the ridges formed in the above-mentioned step into said deep grooves.

REFERENCES:
patent: 3602027 (1971-08-01), Klug et al.
patent: 3753364 (1973-08-01), Runyan et al.
patent: 3881342 (1975-05-01), Thorne
patent: 3906604 (1975-09-01), Kakizaki et al.
patent: 4040479 (1977-08-01), Campbell et al.

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