Method of manufacturing a stainless steel boiler tube with antic

Details Method of manufacturing a stainless steel boiler tube with antic Method of manufacturing a stainless steel boiler tube with antic

1975-01-15

1976-07-13

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 315, 122DIG13, C23F 704

Patent

active

039691535

ABSTRACT:
A boiler tube and a method for manufacturing the same are disclosed in which an inner surface of the boiler tube used in the center of a high-temperature, high-pressure boiler is formed with a spinel layer consisting of an oxide of iron, chromium and nickel, which is exposed. The specific method of the manufacture is that after the boiler tube is brought into contact with high temperature steam, a magnetic iron (Fe.sub.3 O.sub.4) layer produced on the inner surface is removed.

REFERENCES:
patent: 3705057 (1972-12-01), Kelp
Bittel et al., Corrosion, vol. 25, (1), 1969, pp. 7-12.
McCullough et al., Preprint of Paper Presented at the Thirty-second Annual Convention Am. Soc. for Metals, Chicago 1950, pp. 1, 12, 13, 17.

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