KR101922667B1 - Manufacturing method of cooking vessel using copper plating - Google Patents

Abstract

The present invention relates to a manufacturing method of a cooking container using copper plating which immediately removes foreign substances etched from a steel plate by an etching solution sprayed at a high pressure to form perfect uneven parts, and forms a copper plating layer on an embossment of uneven parts to improve thermal efficiency of a cooking container and improve the cooking container′s appearance. According to the present invention, the manufacturing method of a cooking container using copper plating comprises: a printing step of printing a design on an upper surface and a lower surface of a steel plate; a drying step of drying the steel plate on which the design is printed; an etching step of etching a portion where the design is not printed on the dried steel plate to form uneven parts of embossment and engraving; a coating step of forming a coating layer on the engraving of the uneven parts; a masking step of masking the upper surface of the steel plate; and a plating step of using copper to form a copper plating layer on the embossment of the uneven parts where the coating layer is not formed on the lower surface of the steel plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of manufacturing a cooking vessel using copper plating,

The present invention relates to a method of manufacturing a cooking vessel using an iron plate.

Unless otherwise indicated herein, the contents set forth in this section are not prior art to the claims of this application and are not to be construed as prior art to be included in this section.

As is well known, a wide variety of cooking vessels are used to prepare food at a restaurant or home. Such cooking vessels include frying pans and pots, which are manufactured in various sizes and shapes and are selectively used depending on the type of food to be cooked.

Such a cooking vessel is usually made of a metal material for heat conduction and strength and has a handle on one side or both sides that can be safely grasped by the user to prevent heat loss during cooking and prevent the food from splashing out A cover is used.

The metal material used in the manufacture of the cooking vessel is a stainless steel material, a cast material, or an aluminum alloy material, and the inner surface thereof is coated with a ceramic coating agent so that the non-stick function can be exhibited. In the case of ceramic coating agents, Teflon coating agents have been developed and widely used because of the problem that the food is pressed well after a certain period of use.

On the other hand, various shapes of concavity and convexity are formed in recent cooking vessels in order to secure advantages such as increase in heat transfer area, excellent heat absorption, prevention of scratching and slipping, and ease of washing. The irregular portion is a method of causing a predetermined pattern to be printed on a cooking vessel using a corrosion preventing liquid and then etching the portion where the corrosion inhibiting liquid is not printed using a corrosive liquid at an intaglio angle, .

However, conventionally, the irregular portion is formed by impregnating a cooking vessel, on which a predetermined pattern is printed, with a corrosion inhibitor into a corrosive liquid. However, there is a problem in that the impregnation method of the cooking vessel does not completely etch the concave and convex portions at one time. Therefore, the impregnation operation must be performed a plurality of times, which takes a long time. In addition, there is a problem in that the etched foreign substances are not removed from the cooking container and are stuck in the concave / convex portion, so that a concave / convex portion in a perfect state can not be formed.

Conventional cooking vessels coated with a Teflon coating agent have a disadvantage in that the metal surface is covered with a single layer, so that the thermal efficiency is relatively low and the color of the cooking vessel is not refined.

1. Korean Patent Registration No. 10-0804387 (Feb. 11, 2008) 2. Korean Patent Registration No. 10-1392095 (Apr. 28, 2014) 3. Korean Patent Registration No. 10-1451507 (Oct. 20, 2014)

The etching solution is sprayed at a high pressure on a steel plate printed with an anticorrosive liquid for forming the concave and convex portions so as to form convex and concave portions of the concave and convex portions while the copper layer is formed on the convex portion and the copper layer is formed on the concave portion. To provide a container manufacturing method.

In one embodiment, there is provided a method of manufacturing a semiconductor device, comprising: a printing step of printing a pattern on the upper and lower surfaces of an iron plate; a drying step of drying the iron plate on which the pattern is printed; A masking step of masking an upper surface of the iron plate; a masking step of masking an upper surface of the iron plate; and a coating step of coating the upper surface of the iron plate with the coating layer, And a plating step of forming a copper plating layer by using copper as the embossed portion of the concave-convex portion which is not formed.

According to the manufacturing method of the cooking vessel using the copper plating as described above, since the etchant removed from the steel plate due to the corrosive liquid sprayed at high pressure is immediately removed, it is possible to form the irregular portion with high completeness and the copper plating layer is formed on the embossed portion Accordingly, there is an excellent advantage that the thermal efficiency of the cooking container is improved and the appearance of the cooking container becomes more beautiful.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a method of manufacturing a cooking vessel using copper plating according to an embodiment of the disclosure; FIG.
2 is a process sectional view of a method of manufacturing a cooking vessel using copper plating according to an embodiment of the disclosure;

Brief Description of the Drawings The advantages and features of the disclosed subject matter, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It is to be understood, however, that the disclosure is not limited to the embodiments set forth herein, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, But is provided only to fully disclose the scope of the disclosure to those with ordinary skill in the art, and the disclosure is only defined by the scope of the claims. Like numbers refer to like elements throughout.

The detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present disclosure. 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 invention as claimed. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 is a flowchart and FIG. 2 is a cross-sectional view of a process according to an embodiment of the present invention.

Hereinafter, each manufacturing step of the method of manufacturing a cooking vessel using copper plating according to an embodiment of the present invention with reference to FIGS. 1 and 2 will be described in detail.

First, referring to FIG. 2A, a printing step S1 is a step of printing a pattern 20 on a steel plate 10 prepared for molding. At this time, the size of the steel plate 10 is determined according to the type of the cooking container to be manufactured, and the material thereof may also be variously selected from one of stainless steel material, cast material, and aluminum alloy material. The edge of the steel plate 10 is pressurized by hydraulic pressing so that the inside of the steel plate 10 is flattened and the steel plate 10 can be leveled. Further, in order to prevent the occurrence of corrosion, an anti-corrosive liquid may be applied to the edge of the steel plate 10. It is possible to prevent the edges of the steel plate 10 from being etched in the etching step S5 which will be described later by this corrosion preventing liquid.

The above-mentioned pattern 20 is printed on the upper and lower surfaces of the iron plate 10, respectively. At this time, the printing of the pattern 20 is made of the corrosion-preventing liquid. Then, the pattern 20 is printed in a shape not to be etched by the etching liquid in the etching step S5. For example, when the honeycomb shape is processed by the embossing 31 and the part is to be processed by the engraving 32, the honeycomb-shaped pattern 20 is printed with the corrosion-preventing liquid.

Next, the drying step S3 is a step of drying the steel plate 10 on which the pattern 20 is printed, and is dried naturally by natural wind or by hot air generated in the drying chamber.

Next, referring to FIG. 2B, the etching step S5 is a step of etching the unprinted portion of the drawn steel plate 10 to form a concave / convex portion of the concave portion 31 and the concave / (30) is formed. In this etching step S5, a conveyor apparatus in which the iron plate 10 is moved is used. The belt installed in the conveyor apparatus is composed of a mesh net through which the corrosive liquid can pass, and on the upper and lower sides, And an ejection port through which the etchant is injected at a high pressure toward the lower surface.

Thus, while the iron plate 10 is moved along the belt of the conveyor apparatus, the etching operation is continuously performed by the high-pressure sprayed liquid at the injection port provided above and below. At this time, as the etching solution is injected at a high pressure, the foreign substances separated from the iron plate 10 during the etching process can be easily removed from the iron plate 10 by the pressure, so that the highly irregular portion 30 can be formed. After the etching step S5, a confirmation step of confirming whether the steel plate 10 is normally etched may be further included.

Next, referring to FIGS. 2C and 2D, the coating step S7 is a step of forming the coating layer 40 on the engraved portion 32 of the concave-convex portion 30. FIG. In this coating step S7, the coating layer 40 is formed on the entire steel plate 10 and then the upper and lower surfaces are polished to remove the coating layer 40 formed on the relief 31 of the concave and convex portions 30, The coating layer 40 is formed only on the engraved surface 32 of the substrate 30. This coating layer 40 serves to protect the cooking vessel.

2 (e), the masking step S9 masks the upper surface of the steel plate 10 to form a copper plating layer (not shown) on only the lower surface of the steel plate 10 in a plating step S11 to be described later 60 is formed and the copper plating layer 60 is prevented from being formed on the upper surface. In this masking step S9, the masking tape 50 is used and removed after the plating step S11 is finished.

2 (e) and 2 (f), on the embossed portion 31 of the concave-convex portion 30 on which the coating layer 40 is not formed from the lower surface of the steel plate 10, A plating layer 60 is formed. The copper plating in this plating step S11 proceeds with the electroplating method according to the prior art, and the detailed description will be omitted for the sake of simplification of the description.

After the above-described plating step S11, it further includes a machining step (S13) of machining the steel plate 10 into a cooking vessel shape. After the machining step S13, an assembling step of assembling various accessories such as a handle S15). At this time, the machining step S13 may be performed after the plating step S11, but may be performed after the etching step S5.

According to the manufacturing method of the cooking vessel using the copper plating as described above, since the etched foreign material is immediately removed from the iron plate 10 due to the corrosive liquid sprayed at a high pressure, it is possible to mold the irregular portion 30 with high completeness, The copper plating layer 60 is formed on the embossed portion 31 to improve the thermal efficiency of the cooking container and to provide an excellent appearance.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. But is not limited to the example.

10: Iron plate
20: Design
30: uneven portion
31: embossed
32: intaglio
40: Coating layer
50: Masking tape
60: Copper plating layer

Claims (5)

A printing step (S1) of printing a pattern on the upper and lower surfaces of the iron plate;
A drying step (S3) of drying the iron plate on which the pattern is printed;
An etching step (S5) of etching the unprinted portion of the dried iron plate so as to form convex and concave portions of the concave and convex portions;
A coating step (S7) of forming a coating layer on the recessed portion of the concave-convex portion;
A masking step (S9) of masking the upper surface of the steel plate; And
And a plating step (S11) of forming a copper plating layer on the lower surface of the steel plate using copper as a convex portion of the concave-convex portion on which the coating layer is not formed,
In the printing step (S1), the printing of the pattern is made of a corrosion inhibiting liquid, and the pattern is printed in a shape not to be etched by the etching liquid in the etching step (S5), and in the etching step (S5) And the copper plating is sprayed at a high pressure toward the steel plate.
The method according to claim 1,
Further comprising a step (S13) of processing the iron plate into a cooking vessel shape after the plating step (S11).
The method of claim 2,
Further comprising an assembling step (S15) of assembling various accessories to the cooking vessel after the machining step (S13).
delete The method according to claim 1,
Wherein a coating layer is formed on the entire steel plate in the coating step (S7), the upper and lower surfaces are polished to remove the coating layer formed on the corners of the concave-convex portion, and a coating layer is formed only on the concave- Wherein the cooking cavity is made of a metal.

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