One-time-coating enamel and preparation method

Abstract

The invention discloses one-time-coating enamel and a preparation method thereof. The one-time-coating enamel comprises the following components in part by weight: 42 to 45 parts of silica, 4 to 6 parts of aluminum oxide, 7 to 9 parts of sodium oxide, 2 to 3 parts of potassium oxide, 2 to 3 parts of lithium oxide, 17 to 19 parts of diboron trioxide, 5 to 6 parts of titanium dioxide, 1 to 2 parts of calcium oxide, 3 to 4 parts of zirconium dioxide, 1 to 2 parts of sodium hexafluoroaluminate, 2 to 3 parts of strontium oxide, 3 to 4 parts of phosphorus pentoxide, 4 to 5 parts of cobalt oxide, 4 to 5 parts of nickel oxide, 4 to 5 parts of ferric oxide, 1 to 3 parts of potassium nitrate, 1 to 3 parts of sodium nitrate, 1 to 3 parts of boric acid, 1 to 3 parts of lithium fluoride and 1 to 3 parts of strontium carbonate. The preparation method comprises the following steps of: weighing all the components respectively; uniformly mixing the cobalt oxide, the nickel oxide and the nitrate; fully stirring all materials till the uniformity is more than or equal to 98 percent; smelting the mixture in a smelting furnace at the temperature of between 1,200 and 1,300 DEG C, taking a thread sample out and discharging the sample, wherein each meter of the sample is divided into 2 to 3 segments; pressing an enamel tablet by a tablet press till the thickness is less than 2mm; and cooling and smashing the obtained product. When the one-time-coating enamel is coated and enameled on the surface of steel sheets and cast irons, the bottom enamel unifying effect can be achieved at one time, so that the technical problem of one-time enameling is solved.

Description

technical field

[0001] The invention relates to a one-time enamel coating and a manufacturing method thereof. Background technique

[0002] The traditional enamel glaze is used to enamel the steel plate and cast iron surface. It must first enamel the bottom glaze, and then enamel the surface glaze twice, because the bottom glaze only has the function of combining with the steel plate and cast iron billet, and does not have the function of protection and decoration. The top glaze only plays a protective and decorative role, and does not have the function of combining with steel plates and cast iron billets. In this case, there are many enamelling processes, low production efficiency, high energy consumption, and the bottom glaze and top glaze must match, otherwise defects will easily occur. The effect of protection and decoration cannot be achieved. Contents of the invention

[0003] The present invention is a one-time enamel for the surface of steel plate and cast iron an...