KR20080105772A - Method for manufacturing color metallic material having oxide layer with high corrosion-resistance using etching - Google Patents

Method for manufacturing color metallic material having oxide layer with high corrosion-resistance using etching Download PDF

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Publication number
KR20080105772A
KR20080105772A KR1020070053787A KR20070053787A KR20080105772A KR 20080105772 A KR20080105772 A KR 20080105772A KR 1020070053787 A KR1020070053787 A KR 1020070053787A KR 20070053787 A KR20070053787 A KR 20070053787A KR 20080105772 A KR20080105772 A KR 20080105772A
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South Korea
Prior art keywords
metal material
color
etching
nickel
plating treatment
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KR1020070053787A
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Korean (ko)
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김영희
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김영희
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Priority to KR1020070053787A priority Critical patent/KR20080105772A/en
Publication of KR20080105772A publication Critical patent/KR20080105772A/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K13/00—Etching, surface-brightening or pickling compositions
    • C09K13/04—Etching, surface-brightening or pickling compositions containing an inorganic acid
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/02—Local etching

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

A manufacturing method of the high corrosion resistance color metal material which is possible for the three-dimentional expression of the color draft beauiful even when being various about the metal material which is various to the method cheap. A manufacturing method of the high corrosion resistance metal material using etching performs the follows: a step(S20) which etches the metal material in order to form draft including the number in the surface of the metal material, character, and symbol or the drawing; a color oxidation process step(S40) for the metal material passing through above statement step being oxidation heat processed under the non-oxidizing atmosphere of 180‹C~3000‹C for 0 1 second ~4 hours and forming the color oxidation overing layer on the surface of the metal material.

Description

Method for Manufacturing Color Metallic Material having Oxide Layer with High Corrosion-resistance using Etching

1 is a procedure showing a method of manufacturing a highly corrosion-resistant color metal material using an etching according to an embodiment of the present invention.

The present invention relates to a method of manufacturing a metal material is formed on the surface of the metal material including a color pattern including various color oxidized color patterns, letters and pictures, more specifically, by using an etching to reduce the process cost economical and corrosion resistance It relates to a method for producing a highly corrosion-resistant color metal material capable of three-dimensional representation of excellent, diverse and beautiful color pattern.

In general, by forming a three-dimensional pattern of various patterns including numbers, letters, symbols, or figures on the surface of the metal material by etching to form a recess, applying a special paint on the entire surface of the metal or INCO coloring Afterwards, a pattern color texture method has been used, which leaves the color in the recess by grinding.

By the way, this pattern color texture method can show the splendor by the combination of the inherent color of the metal material of the grinding part and the color of the concave part, but the process is complicated, the manufacturing cost is high, and the corrosion resistance is high because the corrosion resistance cannot be increased The disadvantage is that it can only be applied to steel.

In addition, Japanese Patent Laid-Open No. Hei 7-61198 discloses a method of forming a color on the surface of a metal material using a laser and at the same time realizing a color color by natural oxidation. However, this method is a method that can be limitedly applied to a metal material having a high affinity for oxygen in the atmosphere such as Ti, which has a limitation in material diversity.

In addition, Japanese Patent Laid-Open No. Hei 4-91875 discloses a method of forming fine irregularities with a laser on stainless steel or Ni-Cr steel, and then applying a precious metal coating on the uneven parts to realize a high-quality color. The use of silver noble metal and vacuum deposition or sputtering (sputtering) process and the like because there is a disadvantage that the expensive equipment.

In addition, another method is a titanium coating color method of etching a surface of a metal material, coating titanium and forming a color mark through oxidation treatment, which can realize various colors and has excellent color reproducibility. The reason why this vacuum is to be performed is that the cost of the vacuum equipment is high and the productivity is low, so the manufacturing cost is high.

Accordingly, the present invention has been made in view of the above-described conventional problems, and its purpose is to provide a three-dimensional representation of various and beautiful color schemes for various metal materials in an inexpensive and simple manner, and high corrosion resistance color using etching excellent in corrosion resistance. It relates to a method for producing a metal material.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention.

In order to achieve the above object, the present invention comprises the steps of: (a) etching the metal material to form a pattern comprising a number, letters, symbols or pictures on the surface of the metal material; And (b) a color oxidation process step of forming a color oxide film layer on the surface of the metal material by oxidizing and heat-treating the metal material which has passed the step (a) for 0.1 seconds to 4 hours in an oxidizing atmosphere of 180 ° C to 3000 ° C. Include.

Here, the present invention may further include the step of surface processing the metal material to increase the glossiness by improving the roughness of the non-etched portion before the step of etching, and after the etching step to use Depending on the material of the metal material, in order to improve corrosion resistance, the surface of the metal material may be plated such as nickel plating, chromium plating, nickel-chromium plating, chromium alloy plating, or nickel alloy plating.

The metal material may be an iron-based metal and an alloy thereof including a stainless steel or a non-ferrous metal and an alloy thereof including copper, magnesium, aluminum, titanium, nickel, inconel, and monel, and the like. no.

That is, according to the present invention, a pattern including numbers, letters, symbols, or drawings is formed on the surface of the metal material by etching, followed by a color oxidation process by oxidative heat treatment. The present invention provides a method of manufacturing a highly corrosion-resistant color metal material that can three-dimensionally express a variety of beautiful color schemes on the surface of a metal material through color change according to the roughness difference of an etching part.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a procedure showing a method of manufacturing a highly corrosion-resistant color metal material using an etching according to an embodiment of the present invention.

Referring to the drawings, first, the metal material of the subject of the present invention is subjected to surface mirror processing to improve the roughness after the etching process (S10).

At this time, the surface mirror processing is preferably to be polished, buffing, lapping, polishing (polishing) or electropolishing, but is not limited to this, any method that can improve the roughness of the metal material It is possible.

Then, the surface of the metal material subjected to mirror processing is subjected to an etching process to form a pattern including a number, letters, symbols or pictures on the surface of the metal material (S20).

The etching process is performed to melt the surface of the metal material in a chemical method to form a pattern containing a pattern or letters on the surface of the metal material, for example, to produce a pattern to be formed into a film, and to the silk film The pattern can be formed by sensitizing it with ink having excellent corrosion resistance and spraying ferric chloride (FeCl 3 ) to selectively dissolve the part not coated with ink. However, if the above-described object can be achieved, it is particularly limited thereto. In addition, the solvent may be arbitrarily selected according to the metal to be etched in the etching process.

The metal material that has undergone the etching process is subjected to a plating process through an oxidation process (S30).

At this time, the plating process may be selected from nickel plating, chromium plating, nickel-chromium plating treatment, chromium alloy plating treatment and nickel alloy plating treatment, the surface treatment, for higher surface hardness nickel alloy than pure nickel plating Plating is good.

However, in this case, when the metal material is a non-ferrous alloy including stainless steel instead of steel, the plating process may be omitted.

On the other hand, in the present invention, as a result of comparing the metal material subjected to the plating treatment and the metal material not performing the color oxidation process, respectively, as a result, the metal material subjected to the plating treatment can not only increase corrosion resistance but also improve the corrosion resistance of the metal material. It was confirmed that more diverse and beautiful colors are expressed.

The metal material that has undergone the etching process and the plating process is subjected to a color oxidation process for forming a color oxide film layer on the surface of the metal material (S40).

Here, the color oxidation process is to perform the oxidation treatment to form a color oxide film layer on the surface of the plating layer and to form a variety of colors due to the difference in the interference effect of light according to the thickness of the color oxide film layer, color oxidation heat treatment condition is expressed Depending on the color to be made, the temperature and time at which the oxidation treatment is performed in an oxidizing atmosphere can be varied.

In the present invention, the color oxidation process is subjected to an oxidative heat treatment on the surface of the metal material on which the pattern is formed through the etching to form a color oxide film layer, wherein oxidation treatment conditions such as oxidation treatment temperature, time and oxidation treatment atmosphere and surface roughness of the material And gold, purple, blue, light green, green, black, and intermediate colors of each color, depending on conditions such as plating thickness.

Specifically, the oxidation heat treatment conditions in the color oxidation process in the present invention is different depending on the color to be expressed, it is preferable to carry out for 0.1 seconds to 4 hours in an oxidizing atmosphere of 180 ℃ ~ 3000 ℃.

For this reason, when the oxidation heat treatment temperature is lower than 180 ° C., the heat treatment must be performed for an excessively long time in order to express a desired color. Therefore, it is not preferable from an economic point of view. There is a problem of cost increase.

On the other hand, in relation to the oxidative heat treatment time, it means that the desired color can be expressed even at a very short time, for example, an instant oxidative heat treatment time of about 0.1 seconds. If the time is exceeded, there is a problem of a cost increase due to the oxidation treatment for too long.

Therefore, the oxidation heat treatment process according to the present invention may be arbitrarily selected in consideration of the color to be expressed within the range of the oxidation heat treatment temperature and time.

At this time, in particular, when a long time heating at high temperature to obtain a variety of colors can be obtained a color oxide film layer of a certain thickness, it is difficult to achieve the desired gloss and corrosion resistance due to the coarse particles of the oxide, the temperature and time required for the oxidation treatment It needs to be properly managed.

On the other hand, the oxidation treatment apparatus for performing the color oxidation heat treatment can be any continuous furnace and batch furnace using convective heat sources such as gas and electricity, or all continuous furnaces or batch furnaces using radiant heat such as laser beam, electron beam and plasma beam. However, there is no particular limitation as long as the oxidation heat treatment conditions can be satisfied.

In addition, the target metal material according to the present invention may be made of all kinds of iron-based metals including stainless steel or non-ferrous metals including copper, magnesium, aluminum, titanium, nickel, inconel, monel, and alloys thereof. There is no particular limitation thereto, and the shape may be a plate, a block, a pipe, a bar or any other shaped product.

Example 1

STS 304 stainless steel plate of 200mm × 500mm × 2t was etched through an etching solution containing 20g of ferric chloride and 100g of sulfuric acid in 1,000cc of distilled water to form 5 floral marks, and then electroless nickel plated. After heating for 1 minute at 580 ° C, cooling resulted in a golden floral pattern, and the non-etched portion had better gloss than the etched portion.

Here, the electroless nickel plating solution composition was set to 1,000cc of distilled water, nickel chloride 30g, sodium hypophosphite 10g, ammonium chloride 50g, the temperature was 90 ℃, the thickness of the plating layer was 10㎛.

Example 2

500mm × 500mm × 1t cold rolled sheet was etched through an etching solution containing 20g of ferric sulfate and 90g of nitric acid in 1,000cc of distilled water, and then etched and then nickel-plated. After cooling, a blue floral pattern appeared and the etching part was slightly light blue compared to the non-etching part.

Here, the plating conditions were distilled water 1,000cc, nickel sulfate 240g, nickel chloride 50g, boric acid 40g, 1, the secondary polish agent, a current density of 5A / dm, pH 4.5, the plating solution temperature of 45 ℃, the thickness of the plating layer is 9㎛ It was.

The method for producing a highly corrosion-resistant color metal material using the etching of the present invention made as described above provides the following effects.

First, it is possible to provide a method of manufacturing a highly corrosion-resistant color metal material capable of three-dimensional expression of a variety of beautiful color schemes and excellent corrosion resistance to various metal materials in a cheaper and simpler method than the conventional art.

Second, in the manufacturing process, it is possible to provide a well-being of pollution-free, environmentally friendly and high corrosion-resistant color metal material manufacturing method does not generate harmful substances causing indoor air pollution, such as volatile organic compounds, formaldehyde compared to the conventional.

Third, since the color of the metal material is provided by the heat source of high temperature, it is harmless to the human body, and it is exposed to the air and does not discolor even when used for a long time.

As described above, although the present invention has been described by means of a limited embodiment, the present invention is not limited thereto and will be described below by the person skilled in the art and the technical spirit of the present invention. Of course, various modifications and variations are possible within the scope of the claims.

Claims (5)

(a) etching the metal material to form a pattern comprising numbers, letters, symbols or figures on the surface of the metal material; And (b) a color oxidation process step of forming a color oxide film layer on the surface of the metal material by oxidizing and heat-treating the metal material which has passed the step (a) for 0.1 seconds to 4 hours in an oxidizing atmosphere of 180 ° C to 3000 ° C. Method for producing a highly corrosion-resistant color metal material using an etching, characterized in that. The method of claim 1, Before the step (a), the method of manufacturing a high corrosion-resistant color metal material using an etching, characterized in that it further comprises the step of improving the surface roughness by processing the metal material. The method according to claim 1 or 2, After the step (a), the plating treatment process using a method selected from nickel plating treatment, chromium plating treatment, nickel-chromium plating treatment, chromium alloy plating treatment and nickel alloy plating treatment on the surface of the metal material Method for producing a highly corrosion-resistant color metal material using an etching, characterized in that it further comprises. The method according to claim 1 or 2, The metal material is an iron-based metal and alloys thereof including stainless steel; Or a non-ferrous metal including copper, magnesium, aluminum, titanium, nickel, inconel, and monel, and an alloy thereof. The method according to claim 1 or 2, The oxidation heat treatment apparatus is a continuous or batch furnace using a convective heat source of gas or electricity or a radiant heat source by a laser beam, an electron beam or a plasma beam.
KR1020070053787A 2007-06-01 2007-06-01 Method for manufacturing color metallic material having oxide layer with high corrosion-resistance using etching KR20080105772A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100920958B1 (en) * 2009-03-27 2009-10-09 가남테크 주식회사 Guide plate like a antique and its manufacturing method
WO2013142442A1 (en) * 2012-03-23 2013-09-26 Apple Inc. Electron beam polishing of aluminum
KR101377767B1 (en) * 2011-06-29 2014-03-27 강호석 a manufacturing process of a spoon and chopsticks
KR101448446B1 (en) * 2013-02-15 2014-10-14 대구가톨릭대학교산학협력단 METHOD OF SURFACE TREATMENT FOR Mg ALLOYS FRAME OF GLASSES
US10384299B2 (en) 2013-06-26 2019-08-20 Apple Inc. Electron beam conditioning

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100920958B1 (en) * 2009-03-27 2009-10-09 가남테크 주식회사 Guide plate like a antique and its manufacturing method
KR101377767B1 (en) * 2011-06-29 2014-03-27 강호석 a manufacturing process of a spoon and chopsticks
WO2013142442A1 (en) * 2012-03-23 2013-09-26 Apple Inc. Electron beam polishing of aluminum
KR101448446B1 (en) * 2013-02-15 2014-10-14 대구가톨릭대학교산학협력단 METHOD OF SURFACE TREATMENT FOR Mg ALLOYS FRAME OF GLASSES
US10384299B2 (en) 2013-06-26 2019-08-20 Apple Inc. Electron beam conditioning

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