KR101911408B1 - Manufacturing method of enamel product - Google Patents

Abstract

The present invention relates to various enamel products such as pots, tableware, and gas stove top plates. More particularly, an enamel coating layer is formed on the surface of a base material formed by using a hot rolled steel sheet for enamel, and then low-temperature drying and high-temperature sintering are performed. Then, liquid ceramic earth is sufficiently dipped for unglazing and glazing. Then, roasting is finished for ceramic surface formation on the surface of the enamel product. The present invention has the inherent toughness and lightness of the enamel product as well as excellent workability and corrosion resistance. In addition, it is possible to achieve an excellent surface durability based on the ceramic layer on the surface along with a beautiful texture and color. Because of the excellent processability of the enamel product, the present invention can be widely used as various kinds of kitchen utensils, tableware, various everyday goods such as flower pots, facility signs, and accessories not realized by existing ceramics.

Description

Technical Field [0001] The present invention relates to a manufacturing method of an enamel product having a ceramic surface,

The present invention relates to various enamel products such as pots, tableware, and gas stove top plates. More specifically, the present invention relates to various enamel products, such as pottery, The present invention relates to a method of manufacturing an enameled product which not only adds physical characteristics unique to ceramics to the inherent physical characteristics of the enameled product, but also provides a luxurious appearance such as a ceramic.

Porcelain enamel (enamel porcelain) is coated with a vitreous glaze on the metal surface, the strength of the metal, excellent thermal conductivity and processability, and the corrosion resistance and cleanliness of the glass is designed to combine.

On the other hand, metals are easy to corrode and easily scratched, glass has no mechanical strength, and has fragile disadvantages.

Because of this, the enamel is not burned at high temperature and high temperature, has less corrosion occurrence due to moisture and food, has not only unevenness but also has excellent safety and aesthetic characteristics. Therefore, And kitchen appliances.

In general, the hot-rolled steel sheet for enamel is prepared by appropriately adjusting the components and processes so that various enamel defects do not occur after the enamel treatment, will be.

Such various enameled products, as disclosed in the registered utility model No. 20-0202236, are formed by forming a separate Teflon coating layer on the cooking surface of a normal enamel product to protect the enamel layer by the Teflon coating layer, An enamel container having a Teflon coating layer having the effect of improving the cooking environment more comfortably by eliminating the problem of food sticking or easy burning has been proposed and registered.

Then, as in Patent No. 10-0506634, the composition of the steel and the hot-rolling condition are appropriately controlled, so that the fish scale can be manufactured and the enamel product can be manufactured. Also, the fish scale defect, which is a fatal defect of the enamel product, Since the strength is also suitable as hot-rolled steel sheet, a manufacturing method of hot-rolled steel sheet for enamel which can be applied to enamel products to be subjected to single-side and double-side enamel treatment has been enacted and registered.

In addition, as in Patent No. 10-1043695, the mixture was mixed at a ratio of 3 wt% of a photosensitive agent to 97 wt% of AQUACY PLUS PLUS, a photosensitive emulsion for silk screen printing, aged for 5 hours, and a 235 mesh silk mesh After applying the aged photosensitive emulsion 8 times after fixing it on the aluminum plate for silk printing, the printing drawing film with the road guide and the road marking picture is attached to the silk screen. After spraying, water was sprayed by a compressor to complete a plate for silk screen printing. Mixing was carried out at a mixing ratio of 20% by weight of the liquid diluent and 40% by weight of the viscosity ink for viscosity control to 40% by weight of the color pigment powder to prepare a silk screen printing ink Next, the plate for silk screen printing was put on the enameled plate, and the plate was printed with the silk screen printing ink. Then, the plate was placed in a porcelain kiln and heated at a high temperature of 1200 degrees for 5 minutes There is a road guide to enamel plates phrases and road markings painting method for manufacturing a color enamel signs with plastic collar conceived and registered the bar.

In addition, as disclosed in Japanese Patent Laid-Open No. 10-2017-0054132, a container having an enamel coating layer improved in physical properties such as durability and abrasion resistance of a top end surface of a side wall of a container susceptible to cracking has been found.

As such, enamel products have been developed and evolved in various forms, and various attempts have been made so that improved quality can be stably maintained through various surface treatments.

However, the above-mentioned enameled product has a problem in that it is used as a kitchen cooking container which easily breaks with other cooking utensils, containers and the like because it is easily broken or cracked as compared with a metal material.

Particularly, when the upper end face of the sidewall of the container or the outer end face of the sidewall protruding portion of the container, which is likely to be fragile due to a collision or friction, is damaged, not only the aesthetic property is greatly reduced but also the corrosion of the metal is promoted, It becomes the main cause.

Furthermore, the enameled product has a disadvantage that it can not escape from the texture and color of the metal, and thus the quality of the enameled product deteriorates. As known, the enameled product is fragile from scratches and impacts and has an extremely short service life.

Korea Registered Utility Model No. 20-0202236 (registered on August 28, 2000) Korean Registered Patent No. 10-0506634 (registered on July 29, 2005) Korean Registered Patent No. 10-1043695 (registered on June 16, 2011) Korean Patent Publication No. 10-2017-0054132 (published on May 17, 2017)

The present invention has been made to solve the problems as described above. It is an object of the present invention to provide a method for forming an enamel coating layer on a surface of a base material formed by using hot rolled steel sheet for enamel, dipping the liquid ceramic soil sufficiently after low temperature drying and high- And after the chaebol is finished, the ceramic surface is formed on the surface of the enamel product,

Enamel products have light and excellent durability as well as excellent surface durability due to the surface of ceramics, and beautiful colors and textures are expressed. Various enamel and porcelain enamel with pottery surface The present invention has been made in view of the above problems.

According to an aspect of the present invention, there is provided a method of manufacturing a hot dip galvanized steel sheet, comprising: a first step of dipping an enamel glaze on a surface of a base material formed using hot rolled steel sheets for enamelling; A second step of performing low-temperature drying at a temperature of 80 캜 for a molded substrate having an enamel glaze dipped therein; A third step of baking the low-temperature-dried molded base material at a high temperature of 830 ° C; A fourth step of dipping the liquid ceramic soil on the surface of the fired forming substrate; A fifth step of preliminarily firing the molded base material dipped in the ceramic soil at 700 캜; A sixth step of dipping the porcelain glaze on the pre-baked forming substrate; And a seventh step of casting the molded base material in which the ceramic glaze is dipped at 1200 DEG C, sequentially.

The present invention has not only inherent toughness and lightness of the enamel product, but also excellent processability and corrosion resistance, as well as excellent surface durability due to the surface porcelain layer, as well as an excellent texture and color, It is possible to widely utilize various kitchen utensils, kitchen utensils, pots, and other daily necessities, which are not realized by conventional ceramics, as well as facility sign boards and ornaments.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail.

First, the present invention forms a desired product using a hot-rolled steel sheet for enamel, and the intended product includes all products that can be manufactured through cutting, pressing, or the like using an hot-rolled steel sheet for enamel .

Thus, the first step of dipping the enamel glaze on the surface of the base material formed in the form of the desired product to form the enamel coating layer is performed.

The enamel glaze may contain 35 to 40% by weight of silicon dioxide (SiO ₂ ), 10 to 15% by weight of boric acid (B ₂ O ₃ ), 10 to 15% by weight of sodium oxide (Na ₂ O) (Al ₂ O ₂ ) 2 to 5 wt%, feldspar powder (K ₂ O) 3 to 5 wt%, nitrite (HNO ₂ ) 2 to 5 wt%, cobalt oxide (CoO) 1 to 3 wt% A mixture of 2 to 4% by weight of calcium oxide (CuO), 3 to 6% by weight of calcium oxide (CaO) and 2 to 5% by weight of barium oxide (BaO)

Optionally silica (SiO ₂₎ 35 ~ 45 wt%, boron oxide _{(B 2 O 2) 15 ~} 18 % by weight, titanium dioxide (TiO ₂₎ 3 ~ 15% by weight, sodium oxide (Na ₂ O) 5 ~ 10 wt. %, potassium (K ₂ O) 5 ~ 7% by weight, calcium (CaO) 2 ~ 7% by weight, aluminum oxide _{(Al 2 O 3) 2 ~} 5 % by weight of lithium oxide (Li ₂ O) 0.1 ~ 3 oxidation And 50 parts by weight of water is mixed with 100 parts by weight of a mixture of 0.1 to 1.5% by weight of cobalt oxide, 0.1 to 1.5% by weight of cobalt oxide, 0.1 to 1.5% by weight of cobalt oxide and 0.1 to 1% by weight of nickel oxide (NiO) The glaze of the present invention may be used.

At this time, in the present invention, the enamel glaze is not used as it is, but a separate additive is further mixed with the enamel glaze, so that 4 wt% of silica and 7 wt% of clay 0.2% by weight of acetic acid, 0.2% by weight of borax, 3% by weight of pigment, 0.2% by weight of antimony and 40% by weight of purified water are mixed and then mixed and aged.

The enamel glaze in which the additive is further mixed enhances the surface hardness of the enamel product, and at the same time, the smooth surface texture as well as the clay component brings about a more excellent bonding property in the process of forming the ceramic surface to be formed later.

In addition, as described above, the additive was added to the existing enamel glaze, and the resulting mixture was put into a ball mill. After mixing and stirring at a high speed for about 2 hours and 30 minutes, particle size measurement and removal of impurities were carried out. The first step is terminated by uniformly dipping the enamel glaze on the surface.

The above-described forming substrate in the state in which the enamel glaze is dipped is subjected to a second step of performing low-temperature drying at a temperature of about 80 DEG C, so that the enamel glaze is stably adhered and bonded to the surface of the molding substrate. The dried molding material is fired at a high temperature of 830 ° C., and the third step is performed so that the enamel glaze is melted and fixed to the surface of the hot-rolled steel sheet with high strength to form an enamel coating layer having high durability.

In addition, the molding material on which the enamel coating layer is formed as described above is subjected to a fourth step of dipping the ceramic soil on the entire surface. It is ideal that the ceramic soil has a somewhat intractable mucilage form as a liquid phase.

Particularly, the above-described ceramic clay is usually produced by mixing raw materials having three kinds of properties. The clay is prepared by mixing clay, feldspar and silica in suitable proportions, and by mixing an appropriate amount of water, And the mucilage soil used in the present invention is completed depending on the content of the water or the water.

Here, the clay constituting the above-described pottery soil has a shape which changes when the force is applied when kneading, and a property that maintains the shape even when the force is removed, that is, plasticity.

In addition, when heat is applied and solidified into a molded form, a material that plays a role of bonding firmly between the ground powder and the earth powder is required. The feldspar serves as the feldspar. When the temperature is about 1000 ° C., the alkali component contained in the feldspar melts It becomes vitrified to fill the gap between the particles, and the vitreous is hardened even if the temperature is lowered only slightly, so that the particles and the particles are firmly bonded.

Next, another raw material becomes the main body of ceramics, which is a factor determining the main properties of the ceramics such as the specific gravity of the ceramics produced and the degree to which the ceramics can be used up to a certain temperature, and quartzite earth, that is, silica is used.

And then performing dipping of the porcelain soil made of such components into a liquid phase in a diluted or viscous liquid phase and dipping it on the entire surface of the molding substrate on which the enamel coating layer is formed.

At this time, ceramics in various forms such as celadon (a glaze containing iron), white porcelain (calcined in an oxidizing salt or a reducing salt), gilt, chrysanthemum, red, .

After the fourth step is performed, a fifth step in which the molding substrate is baked at 700 ° C is performed. The molding substrate having the enamel coating layer through the pre-baked paste is completely covered with the enamel coating layer due to the porcelain soil As a matter of course, the inherent color of the enamel coating layer also appears to be gentle or obscured by the thickness of the ceramic soil.

If necessary, the fourth and fifth steps may be repeatedly performed to gradually form the ceramic layer gradually.

Next, a sixth step of dipping the ceramic glaze on the pre-formed substrate is performed. The ceramic glaze is intended to smoothly form the surface of the ceramic with high strength.

At this time, when the above-mentioned ceramics glaze is applied, and then the ceramics are roasted in a kiln at 1200 ° C., the seventh process is performed, so that a surface that is glossy and does not allow moisture to pass through can be formed.

In addition, there is a method of baking the glaze directly after forming the clay and then grinding the glaze in advance without making the glaze. In order to strengthen the surface, it is more preferable to roast the glaze again with the ceramics glaze applied after the glaze. Since the ceramics glaze is vitreous, In addition to being a surface, it is also possible to apply a cracking property when the hot glass suddenly cools down to make a fine pattern on the surface of a vase or the like. Such a finely divided pattern is called an ura milk.

Particularly, the above-described ceramic glaze is a mixture of sodium, potassium, and magnesium, calcium, lead, boron, and aluminum oxides, and is generally used in ceramics manufacturing and is generally used in ceramics. And the baking temperature, it is possible to express the original color, texture, or degree of cracking in different colors.

As described above, the enamel product according to the present invention is light and excellent in durability inherent to the enamel, and the entire surface of the enamel is as pure as ceramics, and not only produces a high-quality color and texture, but also a high strength surface can be obtained. It can be applied to almost all kinds of products, including kitchen utensils and tableware, as well as being able to mass-produce, as well as shape and shape, because it forms only the surface of porcelain on the surface of enamel product, So it is very efficient.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention as defined by the appended claims. Examples should be understood.

Claims (2)

A first step of dipping an enamel glaze on a surface of a base material formed by using an hot rolled steel sheet for enamel;
A second step of performing low-temperature drying at a temperature of 80 캜 for a molded substrate having an enamel glaze dipped therein;
A third step of baking the low-temperature-dried molded base material at a high temperature of 830 ° C;
A fourth step of dipping the liquid ceramic soil on the surface of the fired forming substrate;
A fifth step of preliminarily firing the molded base material dipped in the ceramic soil at 700 캜;
A sixth step of dipping the porcelain glaze on the pre-baked forming substrate;
And a seventh step of chiseling the formed substrate having the ceramic glaze dipped therein at a temperature of 1200 ° C.
The method according to claim 1,
Wherein the enamel glaze is further mixed with a mixture of silica, clay, and acetic acid, borax, pigment, and antimony in purified water, and the enamel glaze mixed with the additive is mixed in a ball mill and then used. (EN) METHOD FOR MANUFACTURING ENAMEL PRODUCT WITH SURFACE.