Cast iron enamel cooker and preparation method thereof

Abstract

The invention discloses a cast iron enamel cooker and a preparation method thereof. The coating of the cooker is formed by mixing 80-90 parts by weight of enamel powder and 10-20 parts by weight of anorganic carrier, wherein the enamel powder mainly comprises 38-64 parts by weight of silicon element, 14-27 parts by weight of aluminum element, 17-27 parts by weight of boron element, 2-18 parts byweight of phosphorus element, 14-55 parts by weight of sodium element, 3-36 parts by weight of zinc element, 1-8 parts by weight of titanium element, 0-9 parts by weight of cobalt element, 2-27 partsby weight of nickel element and 1-7 parts by weight of fluorine element; and the organic carrier comprises 70-95 parts by weight of a solvent, 4-20 parts by weight of an auxiliary agent and 1-10 partsby weight of resin. The silicon element and the aluminum element contained in the enamel powder react with oxygen in the air to generate aluminum oxide and silicon oxide during melting, the network compactness of the coating is improved, and the hardness of the enamel cooker formed by coating the surface of the cast iron cooker with the enamel powder is remarkably improved.

Description

technical field [0001] The present invention relates to a enamel The field of coating and its preparation, in particular relates to a cast iron enamel cookware and its preparation method. Background technique [0002] Ceramic cookware is coated on the surface of cast iron cookware to form ceramic cookware, so that enamel cookware not only has the strength and toughness of metal, but also has the characteristics of high hardness and corrosion resistance of ceramics. The ceramic coating on the surface of metal cookware can change the shape of the metal cookware base surface , structure and chemical composition, and endow the matrix with new properties. Conventional coatings are relatively thin, and mainly protect the base metal cookware from high-temperature corrosion; while the high-temperature strength is mainly borne by the cookware metal itself. Since cookware metal and enamel coating can be designed separately, the metal parts coated with enamel not only maintain the hi...

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Problems solved by technology

[0003] At present, the use of surface coating method to increase the high temperature resistance of enamel cookware is one of the feasible methods, but the coating of enamel cookware currently used is not strong enough to bond with the surface of cast iron cookware, and it is prone to thermal fatigue and impact when the coating is subjected to Cracking or spalling can significantly reduce the performance of cast iron cookware and the reliability of the coating