Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1986-05-27
1987-11-17
Childs, Sadie L.
Coating processes
With post-treatment of coating or coating material
Heating or drying
427318, 4273765, 427380, B05D 302
Patent
active
047073853
ABSTRACT:
The invention concerns a method for firing enamel on steel parts, especially on steel sheet of aluminum stabilized continuous cast steel material, as well as an enameling oven with a firing zone and an entry zone serving as a prewarming zone for the carrying out of this process. The invention is characterized in that the heating of the steel part or steel sheet to the firing temperature is interrupted before reaching the firing temperature, in that hydrogen dissolved in the steel is released during the interruption time, that the steel part subsequently is heated further to the firing temperature, is held at this temperature and is then cooled in a known way. The enameling oven for carrying out the method consists according to the invention of a degasing zone inserted between the firing zone and the prewarming zone, in which degasing zone the workpiece coated with enamel is held for a given minimum time at a definite temperature.
REFERENCES:
patent: 2455331 (1948-11-01), Eckel et al.
patent: 2572702 (1951-10-01), Davis
patent: 2677625 (1954-05-01), Eckel et al.
patent: 2754222 (1956-07-01), Healy et al.
patent: 2842458 (1958-07-01), Feeney et al.
patent: 2886463 (1959-05-01), Liest
patent: 2961337 (1960-11-01), Bryant et al.
patent: 3911177 (1975-10-01), Humbert et al.
Deringer, "Relation of Hydrogen to Adherence of Sheet Enamels", J. of the American Ceramic Society, vol. 26, No. 5, pp. 151-159, May 1, 1943.
Bersch Bernhard
Kaup Friedel
Mertinkat Willi
Tenhaven Ulrich
Warnke Heinrich
Childs Sadie L.
Hoesch Aktiengesellschaft
Miele & Cie. GmbH & Co.
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