Method for Heat-Treating a Component Which Consists of a Metal Material and Comprises at Least One Surface Section Coated with a Glaze or Enamel Coating
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United States of America Patent
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Mar 21, 2019
app pub date -
Mar 2, 2017
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Mar 2, 2017
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Abstract
A method for heat-treating a component which consists of a metal alloy, in which or on which at least one surface section is coated with a glaze or enamel coating, includes heating the component to a heating temperature which at least equals a minimum quenching temperature, and quenching the component starting from a temperature which at least equals the minimum quenching temperature in order to produce a higher-strength microstructure in the component. The components can be heat-treated such that the glaze or enamel coating is reliably prevented from chipping. The glaze or enamel coating is pre-cooled to a pre-cooling temperature at least on its free surface prior to quenching, said pre-cooling temperature maximally corresponding to the temperature at which the glaze or enamel coating begins to soften, and wherein the cooling rate at which the glaze or enamel coating is cooled is lower than the cooling rate during quenching.
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