Process for individual identification of the tubes of a heat exc

Details Process for individual identification of the tubes of a heat exc Process for individual identification of the tubes of a heat exc

1992-10-05

1994-06-21

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29407, 29890053, 72367, B23P 1526

Patent

active

053218876

ABSTRACT:
To permit individual identification of each of the tubes (10) of a steam generator, the tubes are marked with the aid of a binary bar code (12a) formed from circular impressions (24) and the absence of impressions. The impressions, formed without material removal, make it possible to read the bar code with the aid of an eddy current probe. The impressions (24) can be made on the exterior of the tubes (10) during their manufacture, or on the interior of the tubes after they have been fixed to the tube plate (16).

REFERENCES:
patent: 2600254 (1952-06-01), Lysobey
patent: 3440705 (1969-04-01), Johnson
patent: 3815493 (1974-06-01), Broderick
patent: 4779437 (1988-10-01), Kubiak
patent: 4848120 (1989-07-01), Schwarze
patent: 5009093 (1991-04-01), Quinn, Jr. et al.

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