KR101028419B1 - Manufacturing method for aluminum cookware - Google Patents

Abstract

The present invention relates to a method for manufacturing an aluminum cookware, and through the pattern forming and surface treatment on the aluminum cookware can be beautifully painted and decorated with various patterns. The present invention molding and pattern forming step; First surface treatment and heat treatment step; Cutting step; Secondary surface treatment and heat treatment and removal step of the secondary surface treatment coating material of the pattern portion. And, depending on the shape of the pattern, after the forming step after the first surface treatment and heat treatment step can proceed to the pattern forming step, and also, according to the shape of the pattern, after forming the pattern on the aluminum plate is molded as a cooking utensil It can then be shifted to primary surface treatment, cutting and secondary surface treatment.

Aluminum, Fluorine Resin, Heat Treatment, Cutting, Turning, Painting, Heat Resistant Paint, Die Casting, Press, Ceramic, Surface Treatment, Powder, Paint, Plating, Electrolytic Film

Description

MANUFACTURING METHOD FOR ALUMINUM COOKWARE

The present invention relates to a method of manufacturing an aluminum cookware, and more particularly, to a manufacturing method that can decorate the outer surface of the aluminum cookware in a plurality of colors and various patterns through the pattern processing and surface treatment.

Aluminum cookware, and more specifically aluminum alloy cookware, is relatively expensive compared to other metals, which are characteristics of aluminum, because of its advantages such as light weight, excellent moldability, easy surface treatment, and beautiful appearance. And widely used.

However, aluminum itself forms a natural oxide film when exposed to air and protects its surface. However, when aluminum is formed into a cooking utensil, heat, moisture, and friction are repeatedly applied, causing severe discoloration and rubbing traces. do.

Therefore, in general, rather than using aluminum as a cooking utensil, the surface or the like was surface-treated with paint, powder, ceramic, coating, fluorine, plating, or the like.

Highly functional fluorine resins have unique characteristics not found in other resins. Among them, heat resistance, chemical inertness, excellent electrical properties, and non-adhesiveness are among the fluorine resins. Properties due to their unique molecular structure.

On the other hand, the ceramic coating is applied to both powder and liquid, and Teflon coating is applied as a ceramic coating to the products used at high strength and high temperature than the case. Ceramic coatings can greatly improve the life of the product by coating a ceramic thin film that is particularly excellent in wear resistance, seizure resistance, corrosion resistance, and oxidation resistance.

By the way, conventional aluminum cooking utensils, for example, the inside of the coating with a fluorine resin or ceramic and the outside of the aluminum coating to protect the metallic silver color, or the entire cooking utensils or fluorine resin or Most of them were monotonous, such as coating with ceramic.

And, in order to increase the added value of the cooking utensils in the cooking utensils, such as through the transfer or side screen method, the design is not good workability, a lot of manual work and costly disadvantages there was.

Therefore, when a pattern is placed on the cookware, workability is excellent, a hand can be made with low cost, and a cookware with high value-added while satisfying the aesthetic sense of consumers by painting the cookware in more beautiful and various colors is required. have.

The present invention devised to satisfy such a demand, the object of the present invention to provide a cooking utensil that can be decorated with a plurality of colors and various patterns through the pattern processing and surface treatment.

In order to achieve the above object, one aspect of the present invention, in the manufacturing method of the aluminum cookware for decorating the outside of the cooking utensils in a variety of patterns, the step of forming the overall appearance of the cooking utensils of the aluminum plate ; Forming a concave concave pattern on a processing surface of the cooking utensil; Primary surface treatment and heat treatment of the entire processed surface using one of fluorine resin, ceramic, powder, electrolytic coating, plating and paint; Cutting the entire processing surface thinly so that the concave pattern remains; The entire surface is treated with a secondary surface treatment using one of fluorine resin, ceramic, powder, electrolytic coating, plating, and paint, followed by heat treatment to remove the second surface treatment layer on the concave pattern.

Another aspect of the present invention provides a method for manufacturing an aluminum cookware for decorating the exterior of the cookware with various patterns, wherein the concave pattern is formed on the flat surface of the aluminum to be concave with respect to the processed surface. step; Shaping the entire outline of the cookware into the aluminum flat plate; Primary surface treatment and heat treatment of the entire processed surface using one of fluorine resin, ceramic, powder, electrolytic coating, plating and paint; Cutting the entire processing surface thinly so that the concave pattern remains; The entire processed surface is fluororesin, ceramic, powder, electrolytic coating, plating, paint using a secondary surface treatment and the second surface treatment layer on the concave pattern is heat-removed and then removed.

The method may further include electrolytically coating the entire primary surface treatment surface between the cutting step and the secondary surface treatment step.

After the secondary surface treatment and heat treatment step, the entire surface of the opposite surface in front and back surfaces of the primary surface treatment and the secondary surface treatment is treated with one of fluorocarbon resin, ceramic, and electrolytic coating. And heat-treating.

The aluminum cookware to which the present invention is applied can be decorated with a plurality of colors and various patterns while maintaining the function as a cookware that is easily surface-treated to clean contaminated parts, while satisfying aesthetic demands of consumers, I can create it

Hereinafter, the first preferred embodiment to which the present invention is applied will be described in detail.

1 is a perspective view of a cooking utensil to which the present invention is applied, (a) is a cooking utensil distributed in the outer surface and the entire bottom surface, (b) is a cooking utensil partially distributed in the outer surface , (c) is a cooking utensil having a concave pattern as a triangle, and (d) is a cooking utensil having a band of a color different from other parts on a part of the outer surface.

FIG. 2 is a partially enlarged view showing a processing state of each step of the first embodiment to which the present invention is applied to part A of FIG. 1, (a) is a cooking utensil forming and pattern forming step, and (b) is a primary Surface treatment and heat treatment step by surface treatment, (c) is cutting step, (d) is surface treatment by secondary surface treatment, and (e) is for coating material during secondary surface treatment on concave pattern Heat treatment and removal step.

In the external shaping and the formation of the concave pattern 5 of the cooking utensil 10 of the first embodiment, first, an aluminum plate in a flat state is drawn using a press machine. The forming mold (not shown) of this press machine has a shape corresponding to the outer shape of the cooking utensil 10, and not only that, but also to be formed on the outer working surface 1 of the cooking utensil 10 in the forming mold. A convex pattern corresponding to the concave pattern 5 is formed.

In addition to drawing processing using a press machine, die casting processing may be utilized. In the die casting processing, a convex pattern corresponding to a concave pattern to be formed together with the appearance of the cooking apparatus 10 is also formed in the mold, and molten metal is formed. The concave pattern can be formed simultaneously with the appearance as the cooking utensil 10 at the time of condensation.

Therefore, in the forming step of the molding and the concave pattern 5 of the first embodiment, the concave pattern on the outer processing surface 1 of the cooking utensil is simultaneously formed with the external shape of the cooking utensil 10 through drawing processing by a press. 5) is performed.

However, the present invention is not limited thereto, and the forming process and the forming process of the concave pattern 5 may be performed separately. First, the outer shape of the cooking utensil 10 may be formed by pressing, and then the outside of the cooking utensil 10 may be removed. When secondary processing is performed so that the cross section of the processing surface 1 becomes a curved shape such as a wave shape, the concave pattern 5 is formed in parallel with this, or the external processing surface of the cooking utensil 10 using a hot stamping mechanism or the like ( Highly complex patterns can be formed in concave shape in 1).

In addition, as a method of forming the other concave pattern 5, a method of processing a pattern on a flat aluminum plate as in the second embodiment described later, and the same pattern is countlessly arranged to a certain depth and processed into a bear-shaped shape How to do, and manual method.

FIG.1 (c) is a perspective view which shows the cooking utensil 10 which has the triangular pattern 5 by 1st Embodiment. The concave pattern 5 is formed by not only?,? Shapes, but also?,?,. ,-, X, ☆, ∧ etc., and horizontal or vertical rectangles, and combinations thereof, and highly complex forms such as logos, floral patterns, characters, landscapes, paintings, characters, etc.

On the other hand, the depth of the concave pattern 5 from the surface of the processed surface is somewhat different depending on the thickness of the surface treatment layer described later, but is generally about 0.5-1.5mm.

Subsequently, in the first surface treatment and heat treatment step, the outer processed surface 1 of the cooking utensil 10 including the concave pattern 5 is coated with paint, powder, ceramic, electrolytic coating, fluorine resin, plating, or the like. Alternatively, the primary surface treatment surface 2 is formed by a coating method and then subjected to heat treatment. For example, the surface treatment using fluorine resin is performed in a general electrostatic coating apparatus.

The electrostatic coating is a coating method in which the particulate fluorine resin is negatively charged, compressed into compressed aluminum into a positively charged aluminum shape or plate, and adsorbed onto the processed surface of the cookware, and the fluorine resin coating using the electrostatic coating is performed. The cookware 10 may be coated with 16 or more solid colors or metallic colors.

In the case of the paint, the component is 86.8% by weight PTFE dispersion, 3.38% by weight water, 0.56% by weight aromatic hydrocarbon, 0.17% by weight triethylamine, 0.17% by weight oleic acid, 0.12% by weight surfactant, inorganic pigment dispersion 8.8 It can be formulated as weight%.

Subsequently, the cooking utensil 10 having the first surface treatment is sent to a baking apparatus and subjected to heat treatment. As a result, the cooking utensil 10 is dried and has excellent adhesion and heat resistance in addition to non-tackiness, chemical resistance, abrasion resistance, and slip resistance. The secondary surface treatment surface 2 is formed.

On the other hand, ceramic coating can be performed using the existing chemical densification method, plasma spraying method, etc., for example.

Next, as a cutting step, in the cutting step of the first embodiment, the first surface treatment of the entire concave processing surface 1, which is relatively convex, is made without cutting the concave pattern 5 and the primary surface treatment layer coated thereon. The cutting surface 3 is formed by shaving the surface 2 thinly by turning. Therefore, the cutting surface 3 is returned to the metallic silver color of aluminum, which is a base, and contrasts with the recessed part 5 which maintains the color of the primary surface treatment layer. Is achieved.

Here, the advantages obtained through cutting, such as turning, will be briefly described. When the cutting is performed after the primary surface treatment, the naturally occurring oxide film of about 2 nanometers on the aluminum surface is automatically removed, and the secondary surface treatment is conventionally performed. A separate blast processing or the like, which is carried out as a pretreatment to assist in layer formation, becomes unnecessary, and it is possible to immediately proceed to the secondary surface treatment.

On the other hand, before proceeding to the next step, the second surface treatment step, an electrolytic coating may be additionally carried out to maintain the metallic silver color of the aluminum revealed in the cutting step according to the selection. In addition, without a secondary surface treatment on the primary surface treatment surface 2 as an option, the opposite surface in the front and back relationship with the primary surface treatment surface 2, that is, the primary surface treatment surface 2 ) Is the outer surface of the cookware, the opposite side will be the inner surface (6) and the inner bottom of the cookware, and if the primary surface treatment surface (2) is the inner surface of the cookware, the opposite side will be cooked. It will be the outer surface of the instrument. The surface treatment of this opposite surface is also carried out using a coating material or a coating method of fluorine resin, ceramic, powder, electrolytic coating, plating, or paint, and then heat treatment similarly to the primary surface treatment.

Next, in the secondary surface treatment and heat treatment step, the metallic silver color of the cutting surface 3 and the primary surface treatment surface 2 of the concave pattern 5 which maintains the color during the primary surface treatment are contrasted. In the process, the entire processed surface of the cooking utensil 10 is coated with one of fluorocarbon resin, ceramic, powder, electrolytic coating, plating, and paint in a color harmonizing differently from the first surface treatment through the second surface treatment. Surface treatment is carried out using ash or a coating method. At this time, by processing the entire processing surface 1 including the cutting surface 3 and the concave pattern 5 at once, the work efficiency of the secondary surface treatment process can be improved.

Subsequently, when the secondary surface treatment is completed, heat treatment is performed to maintain the firm bonding state between the cutting surface 3 of the cooking utensil 10 and the secondary surface treatment surface 4 attached thereto.

Thus, the recessed surface (5) portion is a state in which the secondary surface treatment surface 4 is placed on the primary surface treatment surface (2), the machining surface (1) and the primary surface treatment surface (2) Since the bonding force between the coating material of) is stronger than the bonding force between the coating material of the primary surface treatment surface 2 and the coating material of the secondary surface treatment surface 4, the secondary surface treatment surface 4 is lightly lightened. The coating material of the secondary surface treatment surface 4 on the primary surface treatment surface of the concave pattern 5 to the extent of rubbing or wiping off is easily removed.

Then, the primary surface treatment surface 2 and the secondary surface treatment surface 4, each of which uses one coating material of fluorocarbon resin, ceramic, powder, electrolytic coating, plating, and paint, are surfaced with the same coating material or coating method. It may be treated or surface treated with different coating materials or coating methods.

In this way, the steps in the first embodiment are ended, and in the remaining steps, the product is completed through a punching process and an assembling process for attaching a handle or the like in order to provide convenience for product use.

In 1st Embodiment mentioned above, it is related with forming a recessed pattern, ie, an intaglio pattern in the process surface 1 of the cooking utensil 10. FIG. However, the present invention is not limited thereto, and in order to form an embossed pattern, ie, a convex pattern, on the processing surface 1 of the cooking utensil 10, the processing order is partially changed. Primary surface treatment and heat treatment. Subsequently, a convex pattern (not shown) is formed. The convex pattern is processed by punching or pressing a pattern frame against the inner surface of the cooking utensil 10. In the subsequent cutting step, only the primary surface treatment surface (not shown) on the convex pattern is cut and the primary surface treatment surface of the processing surface is left as it is. Then, the first surface treatment surface and the entire convex pattern are subjected to the second surface treatment, and the second surface treatment surface on the convex pattern is lightly rubbed with the coating material of the second surface treatment surface applied on the remaining primary surface treatment surface. Wipe it off. At this time, when the sidewall of the convex pattern and the processing surface are almost perpendicular, it is difficult to remove the secondary surface treatment coating material around the bottom of the convex pattern. In the first surface treatment, the color of the intermediate stage in which the color of the convex pattern is changed can be produced, or the shadow around the block can be produced to make the convex pattern more prominent.

EMBODIMENT OF THE INVENTION Hereinafter, 2nd Embodiment of this invention is described.

According to the second embodiment, after the outer shape of the cooking utensil 10 is molded in the first embodiment, the concave pattern 5 is formed on the outer processing surface 1 of the cooking utensil 10. In other words, first, the concave pattern 5 is formed on an aluminum sheet (not shown) before molding, and then the aluminum sheet on which the concave pattern 5 is formed is formed into a shape of a cooking utensil using a press. Go to

As such, when the concave pattern 5 is formed and then the shape of the cooking utensil is molded, particularly when the highly complicated concave pattern 5 is formed, the outer processing surface 1 may be flat rather than curved. Various technologies such as lasers can be applied to make it more precise and sophisticated.

The process steps in the subsequent production method are the same as in the first embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, 3rd Embodiment of this invention is described.

1 (d) is a perspective view of the cooking utensil 10 according to the third embodiment to which the present invention is applied.

In the third embodiment, similarly to the first embodiment, various types of beautiful cooking utensils are obtained by utilizing the characteristics of non-tackiness, slipperiness, and chemical resistance of the surface-treated coating surface.

First, external processing of the cooking appliance 10 is performed by press working or die casting, similarly to the first embodiment.

Subsequently, a band-shaped primary surface treatment surface 11 is formed on a part of the circumferential outer surface of the cooking appliance 10, wherein the primary surface treatment surface 11 is formed of fluorocarbon resin, ceramic, powder, paint, The coating material of either the electrolytic coating or the plating is formed into a variety of complex and free shapes as a spray. And the cooking utensil 10 is heat-treated to fix the primary surface treatment surface 11.

Subsequently, in the secondary surface treatment, the entire externally processed surface 1 including the primary surface treatment surface 11 is applied as one coating material of fluorine resin, ceramic, powder, paint, electrolytic coating and plating and dried. At this time, the coating material at the time of the secondary surface treatment adhering on the primary surface treatment surface 11, as described above, the bonding force between the processing surface 1 of the lower surface of aluminum and the primary surface treatment coating material, the primary Since it is stronger than the interlayer bonding force between the surface treatment layer and the secondary surface treatment layer, it can be lightly rubbed or wiped off.

Subsequently, heat treatment is performed to fix the coating material of the secondary surface treatment surface 13.

1 is a perspective view of a cooking utensil to which the present invention is applied, (a) is a cooking utensil distributed in the outer surface and the entire bottom surface, (b) is a cooking utensil partially distributed in the outer surface , (c) is a cooking utensil having a concave pattern as a triangle, and (d) is a cooking utensil having a band of a color different from other parts on a part of the outer surface.

FIG. 2 is a partially enlarged view showing a processing state of each step of the first embodiment to which the present invention is applied to part A of FIG. 1, (a) is a cooking utensil forming and pattern forming step, and (b) is a primary Heat treatment by surface treatment and surface treatment step, (c) is the cutting step, (d) is the surface treatment by the secondary surface treatment, (e) is the coating material during the secondary surface treatment on the concave pattern Heat treatment and removal step.

Claims (4)

In the manufacturing method of the aluminum cookware for decorating the outside of the cookware in various patterns, Shaping the entire outline of the cookware from the aluminum plate; Forming a concave concave pattern on a processing surface of the cooking utensil; Primary surface treatment and heat treatment of the entire processed surface using one of fluorine resin, ceramic, powder, electrolytic coating, plating and paint; Cutting the entire processing surface thinly so that the concave pattern remains; Electrolytic coating the entire first surface treatment surface; And a second surface treatment using the fluorine resin, ceramics, powder, electrolytic coating, plating, and paint on the entire processed surface, followed by heat treatment to remove the secondary surface treatment layer on the concave pattern. Method for producing an aluminum cookware. In the manufacturing method of the aluminum cookware for decorating the outside of the cookware in various patterns, Forming a concave concave pattern on the surface of the machined surface, on the machined surface of the aluminum plate; Shaping the entire outline of the cookware into the aluminum flat plate; Primary surface treatment and heat treatment of the entire processed surface using one of fluorine resin, ceramic, powder, electrolytic coating, plating and paint; Cutting the entire processing surface thinly so that the concave pattern remains; Electrolytic coating the entire first surface treatment surface; And a second surface treatment of the entire processed surface using one of fluorine resin, ceramic, powder, electrolytic coating, plating and paint, followed by heat treatment after removing the second surface treatment layer on the concave pattern. Method for producing an aluminum cookware. delete The method according to claim 1 or 2, Following the second surface treatment and heat treatment step, the entire surface of the opposite surface in front and back relationship of the first surface treatment and the second surface treatment using one of fluorocarbon resin, ceramic, and electrolytic coating is subjected to surface treatment and heat treatment. Method for producing an aluminum cookware further comprising the step.

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