KR20100004798A - Ceramic coating iron and steel sinker on a fishline and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A ceramic coating steel sinker and a manufacturing method thereof are provided, which can prevent corrosion of the steel by inorganic material ceramic coating layer of high intensity. CONSTITUTION: A manufacturing method of a ceramic coating steel sinker comprises a pre-processing process(100) for pre-processing the surface of the steel; an anodic film formation process(200) for forming a anodic film on the surface of the pre-processed steel; a ceramic coating layer formation process(300) for laminating the ceramic coating layer on the external side of the anodic film; and a hardening process(400) for hardening the coating layer by heating a steel sinker in which the anodic film and ceramic coating layer are formed.

Description

Ceramic coating iron and steel sinker on a fishline and Manufacturing Method

In the present invention, a fishing rod that is attached to the end of a fishing line so that the fishing needle sinks in the water, or a net weight that is suspended from the net by hanging on the net to sink in the water is made of steel (hereinafter referred to as a 'stone rod' made of steel) However, unlike the conventional net weight, by providing a steel rod which laminated a chemical coating layer and a ceramic coating layer to prevent corrosion on the surface of the steel rod, it is made of a high-strength inorganic ceramic coating layer. The present invention relates to a ceramic-coated steel bumper and a method of manufacturing the same, which are environmentally friendly by preventing corrosion of iron.

Generally, rods such as fishing hooks that hang at the end of a fishing line so that fishing needles sink in the water or net weights that hang on a net to sink in water are made of lead (Pb) material that is harmful to the human body and causes environmental pollution. have.

These lead bumpers not only cause ecosystem disturbances due to lead, but also cause symptoms such as headache, anorexia and vomiting cramps when the human body is exposed to lead, and addiction causes anemia, central nervous disorders, arteriosclerosis, and lethargy. The environmental health community is advising, and in Korea, fishing experts estimate that the lead boulder thrown away after being used by about 60 ~ 7 million anglers annually will reach 80,000 tons.

Relying on the purpose of Article 1 of the Water Environment Conservation Act of the Ministry of Environment, water pollutants and lead and compounds, which are specific water hazardous substances, are toxic substances that cause water pollution. Those who have leaked, leaked, or discarded substances are subject to imprisonment of up to three years or fines of up to 15 million won, and soon the revision of legislation dealing with the prohibition of the use of lead pedestals will soon become visible.

The use of eco-friendly bondol made of ceramics is recommended as a substitute for such lead bondol. However, the ceramic bondol has a high manufacturing cost, which increases the leisure cost of fishing enthusiasts, and its hardness and strength when exposed to salt and water for a long time. Many problems have occurred, such as weakening and brittleness, which are not practical.

Therefore, it can be used as the main raw material in modern industry because of its strength, workability, low price, and reusability as a substitute for lead bend, but it has inherent drawback of being easily corroded by oxidation. In itself, it cannot be used as a stick.

That is, steel is obtained by various methods from ore present in a relatively stable form, and there is a strong tendency to become an oxide, which is an inherently stable form in the process of using steel materials.

Therefore, surface pretreatment has been introduced to compensate for these shortcomings of steel, and one of the most widely used methods of surface pretreatment of steel is chemical treatment of steel surface to form high adhesion and stability oxide film on steel surface To improve the chemical properties such as corrosion resistance, high temperature oxidation resistance and at the same time increase the hardness wear resistance.

As described above, there are various types of oxide films formed by steel surface pretreatment, such as chromate coatings and phosphate coatings. Among them, the most widely used industrially are chemically reacting with dilute phosphoric acid to make steel surface poorly soluble. It is a chemical conversion film made of crystalline phosphate to change the unique properties of steel.

Although it can be used as a substitute for lead pedestals by using the steel with the formation of the Martian coating layer, due to the peculiarity of rocky seabeds and the characteristics of fishing where frequent rope winding occurs, the steel pedestals frequently collide with the seabed rocks and friction. As the chemical conversion layer formed on the surface of the steel bumper is easily damaged, the corrosion resistance, corrosion resistance, and oxidation resistance are deteriorated by salt and moisture of seawater, which causes a problem that the steel bumper is easily corroded.

Therefore, the present invention for solving the above problems is formed by forming a coating layer to prevent corrosion on the surface of the steel rod, and then to produce a ceramic coated steel rod that forms a ceramic coating layer that emits anions and far-infrared rays on the outside, The coating layer improves the corrosion resistance and abrasion resistance of the steel, and improves the adhesion between the surface-treated chemical coating layer and the ceramic coating layer to protect the chemical coating layer. Technical coatings of a ceramic coated steel bump and a method of manufacturing the same to prevent damage to the chemical conversion layer and to prevent environmental pollution by the ceramic coating layer.

In the present invention for solving the above problems in the steel rods 10 made of a steel body,

The steel material 1 is formed with an uneven portion 2 on the outer surface,

And the chemical conversion film layer 3 is formed on the surface of the uneven portion 2,

A ceramic coated steel bumper and a method of manufacturing the same, characterized in that the ceramic coating layer 4 is laminated on the outside of the chemical conversion layer 3 as a problem solving means.

However, the ceramic coating layer 4 is based on 100 parts by weight of the ceramic coating composition, 65 to 83 parts by weight of inorganic binder, 10 to 19 parts by weight of functional filler, 5 to 15 parts by weight of ceramic powder, and 1 to 2 parts of pigment. It is preferable to coat using a ceramic coating composition composed of parts by weight.

The present invention provides a steel bumper that forms a layer of a chemical coating layer that prevents corrosion on the surface of a steel bumper and an anion and far-infrared rays, which is excellent in corrosion resistance and abrasion resistance, and is an environmentally friendly high strength inorganic ceramic coating layer. And even when friction occurs, the high-strength inorganic ceramic coating layer prevents damage to the chemical conversion layer and prevents environmental pollution, thereby having an alternative effect on the prohibition of use of lead-block.

Hereinafter, described in detail by the accompanying drawings, the steel rods according to the present invention.

1 is a cross-sectional view illustrating a process of sequentially forming a chemical conversion layer and a ceramic coating layer in a steel rod according to the present invention, Figure 2 is a process block diagram showing the process of Figure 1a, the steel rod 10 of the present invention is shown in FIG. As in 1c, the chemical conversion film layer 3 and the ceramic coating layer 4 are sequentially formed on the entire surface of the steel material 1.

Ceramic coated steel bumper according to the present invention is a steel bumper body 10 made of a steel material,

The steel material 1 is formed with an uneven portion 2 on the outer surface,

And the chemical conversion film layer 3 is formed on the surface of the uneven portion 2,

It relates to a ceramic coated steel bumper, characterized in that the ceramic coating layer (4) is laminated to the outside of the chemical conversion layer (3).

Steel rod pedestal 10 according to the present invention is characterized in that the main body is made of a steel material (1), to form a chemical conversion layer (3) densely to prevent corrosion of the surface of the steel material on the steel material on which the uneven portion (2) is formed.

In the present invention, the uneven portion 2 is formed on the surface of the steel so that the chemical conversion layer 3 can be easily formed on the surface of the steel 1, and the chemical conversion layer preferably forms a phosphate chemical coating layer. Forming a phosphate chemical conversion layer on the surface of the steel material may be accompanied by the improvement of the chemical properties such as rust resistance, corrosion resistance, high temperature oxidation resistance, etc., and at the same time increase the hardness wear resistance.

In the present invention, the thickness of the chemical conversion layer 3 is preferably 3 to 17 μm. When the thickness of the chemical conversion layer is less than 3 μm, the thickness of the coating layer is so thin that the coating layer is easily damaged to prevent corrosion resistance, corrosion resistance, and high temperature. If there is a possibility that physical properties such as oxidizing property do not appear properly, and the thickness of the chemical conversion layer exceeds 17 μm, the above properties are improved, but the chemical conversion layer is roughened so that the ceramic coating layer is not uniformly coated on the outer surface. It may cause damage.

1A and 1B, the ceramic coating layer 4 is coated on the outer surface of the chemical conversion layer 3 to protect the chemical conversion layer, and the surface of the steel material is protected by the mechanical and chemical properties of the ceramic coating layer 4. do.

In the present invention, the ceramic coating composition for forming the ceramic coating layer 4 is a composition of the same kind as the inorganic ceramic coating composition which the inventor has already registered in Korea Patent No. 512599, based on 100 parts by weight of the ceramic coating composition. It is preferable to coat using a ceramic coating composition consisting of 65 to 83 parts by weight of the inorganic binder, 10 to 19 parts by weight of the functional filler, 5 to 15 parts by weight of the ceramic powder, and 1 to 2 parts by weight of the pigment.

In the present invention, the inorganic binder is to improve the mechanical properties such as durability, abrasion resistance and chemical properties and thermal conductivity of the coating layer, the mixing amount of the inorganic binder is 65 to 83 parts by weight of the inorganic binder with respect to 100 parts by weight of the ceramic composition desirable. If the mixing amount of the inorganic binder is less than 65 parts by weight, the mechanical and chemical properties may be lowered. If the mixing amount of the inorganic binder exceeds 83 parts by weight, the mechanical and chemical properties may be improved, but the thermal conductivity may be lowered.

And it is preferable that the said inorganic binder consists of 50-70 weight% of silane compounds and 30-50 weight% of silica sol with respect to whole quantity of an inorganic binder.

The silane compound is an inorganic binder acting as a binder, more specifically, the silane compound may be methyltrimethoxysilane, ethyltrimethoxysilane, normal propyltrimethoxysilane, phenyltrimethoxysilane, or vinyltri. Methoxysilane, methyltriethoxysilane, ethyltriethoxysilane, normalpropyltriethoxysilane, phenyltriethoxysilane, vinyltriethoxysilane, trifluoropropyltrimethoxysilane, tridecafluorooctyl It is preferable to select and use 1 type or more from a remethoxysilane, tetraethoxysilane, or heptadecafluorodecyl trimethoxysilane. When the amount of the silane compound used is mixed below the range defined above, the reactivity with the silica sol is lowered. When the amount of the silane compound used is mixed above the range defined above, there is a possibility that an overreaction occurs and the physical properties of the binder may decrease.

The silica sol is an inorganic compound which is chemically reacted with the silane compound to be bonded, and it is preferable that 30 to 50% by weight of the inorganic sol is mixed with respect to the total amount of the inorganic binder. If the amount of silica sol is out of the range defined above, there is a possibility that the bonding force of silicon-oxygen-metal (Si-O-Metal) is weakened and peeled between methyltrimethoxysilane and tetraethoxysilane. .

In addition, in the silica sol used in the present invention, it is preferable to mix 60 to 80 wt% of water with 20 to 40 wt% of powder silicon oxide (SiO ₂ ) having a particle size of 0.2 to 1.0, and adjust the mixing amount as necessary. Can be.

The functional filler is a filler which is mixed between the silane compound and the silica sol to prevent cracking of the coating film and to improve the physicochemical properties of the coating film by adjusting the viscosity. The mixing amount of the functional filler is 10 to 100 parts by weight of the ceramic composition. It is preferable that it is 19 weight part. If the amount of the functional filler is less than 10 parts by weight, the gloss or adhesion may be lowered. If the amount of the functional filler is more than 19 parts by weight, the surface of the coating film may be rough, which may adversely affect the coating.

Functional filler in the present invention to enhance the physicochemical properties such as durability, aging resistance, abrasion resistance, such as potassium titanate and alumina or natural mineral group quartz-monzonite, gneiss, rhyolite tuff or tourmaline, loess, stiffness, amethyst Preference is given to using one or more mixtures of raw ore, bamboo charcoal, udonite, noble sheep, obsidian, elvanite, ore, ore, lava, ghost or algae charcoal, and charcoal.

The functional additive has a needle-like or plate-like particle shape, thereby preventing cracks in the coating film or adjusting the viscosity of the coating agent between the binders.

In addition, the ceramic powder is mixed to improve the mechanical properties of the coating film and to emit far infrared radiation and anion, and the mixing amount of the ceramic powder is preferably 5 to 15 parts by weight based on 100 parts by weight of the ceramic composition. When the mixed amount of the ceramic powder is less than 5 parts by weight, it is difficult to expect far infrared rays and anion release effects. When the amount of the ceramic powder exceeds 15 parts by weight, the state of the coating film and the adhesion may be lowered.

In the ceramic powder, it is preferable to mix the far-infrared radiation material and the anion-emitting material in a 1: 1 weight ratio so that the anion emission amount and the far infrared radiation amount are appropriate.

In the present invention, the far-infrared radioactive material is one or more of tourmaline, loess, biotite, amethyst, raw ore, bamboo charcoal, uranite, precious stone, obsidian, ganban stone, photonite, lava, and noble stone having a far-infrared emissivity of 40 to 90% or more. It is preferable to select and use the above mixture.

In addition, in the present invention, it is preferable to use one or more mixtures of the anion emitting material selected from strontium, vanadium, zirconium, zirconia, cerium, neodymium, lanthanum, barium, rubidium, cesium and gallium. .

In the present invention, the thickness of the ceramic coating layer is preferably 20 ~ 50㎛, when the thickness of the ceramic coating layer is less than 20㎛ there is a fear that the chemical properties such as mechanical properties and corrosion resistance, such as durability, wear resistance of the coating layer is deteriorated, If the thickness of the coating layer exceeds 50㎛ the mechanical and chemical properties are improved, but there is a fear that the thermal conductivity is lowered.

And the ceramic composition according to the present invention uses a pigment powder to give the color of the coating film, the mixing amount of the pigment is preferably 1 to 2 parts by weight based on 100 parts by weight of the ceramic composition. The amount of the pigment used in the present invention is limited as described above, but may be appropriately adjusted according to the saturation, brightness, etc. of the pigment according to the color of the pigment or the needs of the manufacturer or the needs of the manufacturer and not necessarily limited thereto. .

As described above, the ceramic-coated steel bumper surface-treated according to the present invention treats the outer surface of the steel with a chemical conversion layer and forms a ceramic coating layer on the outside thereof, thereby improving the mechanical and chemical properties of the coating layer to prevent corrosion of the steel. It is to provide eco-friendly steel bumpers.

Hereinafter, a process of sequentially stacking a chemical conversion layer and a ceramic coating layer on a steel surface in manufacturing a ceramic coated steel bump using the ceramic coating composition as described above will be described in detail with reference to the accompanying drawings.

With respect to the method for producing a ceramic-coated steel bumper according to the present invention, with reference to Figure 2 in detail, the present invention is a method for producing a bondol body made of steel,

A pretreatment step (100) for pretreating the surface of the steel material (1) which is the main body;

A chemical conversion film forming step (200) for forming the chemical conversion film layer (3) on the surface of the pretreated steel material (1);

A ceramic coating layer forming process (300) for forming a ceramic coating layer (4) by laminating it on the outer surface of the chemical conversion layer (3);

A firing process 400 for heating the steel bumps on which the chemical conversion layer and the ceramic coating layer are formed to cure the coating layer;

Afterwards, a chemical conversion layer and a ceramic coating layer are formed on the outer surface of the steel material.

Hereinafter, the manufacturing method of the ceramic-coated steel bumper according to the present invention will be described in detail for each process as follows.

In the present invention, the pretreatment step 100 is a step generally performed to remove various contaminants adhering to the surface of the steel material 1, the degreasing step 101, the first washing step 102, and the acid treatment step 103. ) And the second washing process 104.

First, the pretreatment process 100 is a degreasing process 101 for processing the steel material (1) to produce a pebble shape, and then remove contaminants such as oxides, hydroxides, metal salts and oils and fats attached to the surface of the steel material (1). Do this.

At this time, the oil contaminated on the surface of the steel is animal fats and oils in addition to vegetable oils and mineral oils, the degreasing method is different depending on the type of contaminated oils, but in the case of vegetable fats and oils is usually removed when immersed in alkaline liquid, mineral oils Since it is difficult to remove with alkali, an organic solvent or various additives should be used.

When the degreasing step 101 is completed, the first washing step 102 for washing with clean water to remove the alkaline liquid or organic solvent used for degreasing is performed, and then the surface of the rust and scale, which are corrosion products of steel, is surfaced. The acid washing process 103 is carried out to remove condensate from the steel surface and to form the uneven portion 2 on the steel surface, and then the second washing process 104 is performed using water to remove residual acid as clean water. Proceeds to complete the pretreatment step 104.

According to the above method, the chemical conversion film formation step 200 of completing the pretreatment of the steel material 1 and the process 100 is performed.

In the present invention, the chemical conversion layer forming process 200 is a process performed to form a uniform crystallization chemical conversion layer on the surface of a steel material. The surface adjustment process 201, the chemical conversion layer forming process 202, the washing process 203 and It is processed through the steps of the drying process (204).

That is, when the surface adjustment step 201 undergoes the degreasing step 101 and the acid washing step 103 in the pretreatment step, the surface of the steel material 1 almost loses its active point in structure, resulting in a rough and coarse film. For this reason, it is necessary to give free energy to the surface of the metal to increase the number of active points.As the number of active points increases, the number of active points increases the number of nuclei of crystals in the process of chemical coating, resulting in fine It gives a uniform coating of crystals, and this action is called surface adjustment.

Since the surface adjustment liquid used for the surface adjustment is influenced by the quality of the water used, it is preferable to use water having high hardness as pure water (deionized water) or soft water passed through a hard water softening device.

When the surface adjustment process 201 is completed, the chemical conversion layer forming process 202 is performed.

That is, the coating agent reaction before the steel material 1 is immersed proceeds through the processes of the following reaction formulas (a) to (c).

3Zn (H ₂ PO ₄ ) ₂ ⇔ 3H ₃ PO ₄ + 3 ZnHPO ₄ (a)

3ZnHPO ₄ ⇔ H ₃ PO ₄ +3 Zn ₃ (PO ₄ ) ₂ (b)

The reaction of Chemical Formula (a) + Chemical Formula (b) is carried out as described in Chemical Formula (c) below.

3Zn (H ₂ PO ₄ ) ₂ ⇔ 4H ₃ PO ₄ + Zn ₃ (PO ₄ ) ₂ (c)

When the steel material (1) is immersed and heated in an aqueous solution of phosphate, the reaction proceeds as shown in the following reaction formula (d).

Fe + 2H ₂ PO ₄ ⇔ Fe (H ₂ PO ₄ ) ₂ + H ₂ (d)

The steel material (1) reacts with the phosphoric acid of formulas (a) and (b) to corrode iron, melt some of it to become iron ions, and simultaneously dissipate hydrogen ions to generate hydrogen gas, as shown in Scheme (e) below. Is destroyed.

2H ⁺ + 2e ^- ⇔ H ₂ --------- (e)

As a result, the free phosphoric acid is lost, and the concentration of hydrogen ions near the surface of the steel material 1 decreases and moves to the right. Thus, crystals of the second and third phosphates precipitate in the liquid on the entire surface of the steel material. The phosphate chemical conversion film layer 3 is formed to further grow into crystal nuclei over the entire surface and cover the entire surface as shown in FIG.

When the phosphate chemical conversion layer forming process 202 is completed, the washing process 203 for washing with clean water to remove the used phosphate aqueous solution is performed, and then the drying process 204 is performed to the surface of the steel material 1. The chemical conversion layer coating process of forming the phosphate chemical conversion layer 3 is completed.

In the chemical conversion layer forming process, the chemical conversion layer (3) layer is an example of forming a phosphate coating, but a phosphoric acid-zinc based chemical coating layer, a manganese coating layer, and a phosphate-iron based chemical coating layer may be formed. The kind of the coating layer is not limited.

When the formation of the chemical conversion layer is completed, the ceramic coating layer forming process 300 is performed to form an inorganic ceramic coating layer having high strength to emit anion and far infrared rays on the chemical conversion layer 3 and to protect the chemical conversion layer 3.

After the ceramic coating layer forming process 300 is completed according to the above method, the firing process 400 is performed according to a conventional method.

As described above, in the present invention, the firing process 400 is capable of relatively low temperature firing, and when heated to a high temperature, the bonding force between the binder mixture and the ceramic powder becomes stronger and does not peel off from the substrate. In addition to the protection, it is an environmentally friendly method that can prevent the corrosion of steel in water by improving the mechanical and chemical properties of the ceramic coating layer.

In the present invention, the firing conditions are preferably baked in the range of 1 to 2 hours at a temperature of 160 ~ 300. When the firing condition is less than the above-defined range, there is a fear that the bonding strength between the binder and the ceramic powder may be lowered, and when the firing condition exceeds the above-defined range, the physical properties may be reduced.

And since the ceramic coating composition used in the method for producing a ceramic coated steel rod according to the present invention has already been described in detail above, the description thereof will be omitted.

Hereinafter, the present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the present invention.

1. Manufacture of ceramic coated steel bumpers

(Example 1)

The surface of the steel is subjected to a pretreatment process by a conventional method, and then a 3 μm thick chemical coating layer is formed on the outside thereof, and then a 50 μm thick ceramic coating layer 4 is formed on the outer surface of the chemical coating layer using a ceramic coating composition. Next, the substrate was calcined at a temperature of 160 ° C. for 2 hours to form a chemical conversion layer and a ceramic coating layer on the surface of the steel, and coated with steel as shown in FIGS. 1A and 1B.

(Example 2)

The surface of the steel is subjected to a pretreatment process by a conventional method, and then a chemical coating layer having a thickness of 17 μm is formed on the outside thereof, and then a ceramic coating layer 4 having a thickness of 20 μm is formed on the outer surface of the chemical coating layer using a ceramic coating composition. Next, the substrate was calcined at a temperature of 160 ° C. for 2 hours to form a chemical conversion layer and a ceramic coating layer on the surface of the steel, and coated with steel as shown in FIGS. 1A and 1B.

The ceramic coating composition used in Examples 1 and 2 is a ceramic coating composition consisting of 72 parts by weight of an inorganic binder, 15 parts by weight of functional filler, 12 parts by weight of ceramic powder, and 1 part by weight of pigment, wherein the inorganic binder is a silane compound 50-70 The silane compound was prepared by mixing a mixture of methyl trimethoxysilane and tetraethoxysilane in a uniform amount, and the silica sol was 0.2 to 1.0 particle size. 30% by weight of powdered silicon oxide (SiO ₂ ) was mixed with 70% by weight of water. The functional filler was a mixture of potassium titanate and alumina in a uniform amount, and the ceramic powder was far-infrared radiating ganban stone, tourmaline And a mixture of vanadium and zirconium as an anion emitting material in a uniform amount was used.

(Comparative Example 1)

Coating the steel material in the same manner as in Example 1, but manufactured a ceramic-coated steel bumper without performing chemical conversion coating.

(Comparative Example 2)

By coating the steel material in the same manner as in Example 2, but without the chemical conversion coating to produce a ceramic-coated steel bumper.

2. Evaluation of Ceramic Coated Steel Pedestals

As a result of evaluating the impact resistance of the ceramic coated steel bumps of Examples 1 and 2 and Comparative Examples 1 and 2, the ceramic coated steels of Examples 1 and 2 were found to have no cracks or peeling phenomenon in the coating layer. In ceramic coated steels, fine cracks and peelings were found in the coating layer. In the comparative example, the above phenomenon is found to be due to the absence of a chemical conversion layer to enhance the adhesion between the steel material and the ceramic coating layer.

The impact resistance test was determined by dropping a 500 ± 1g steel ball on a ceramic coated steel material 50cm in accordance with the method of KS D 6711 and then visually observing the coating film of the ceramic coated steel material.

In addition, as a result of the evaluation of the corrosion resistance, the ceramic coating steels of Examples 1 and 2 and Comparative Examples 1 and 2 were not found at all in the coating layer, but in Comparative Examples 1 and 2, the ceramic coating film was easily damaged due to the low impact resistance and heat resistance. There is always a risk of being vulnerable to corrosion resistance performance.

In the corrosion resistance test, ceramic coated steel material was immersed in a 5% H ₂ SO ₄ solution for 720 hours according to the method of JIS K 5400, and then taken out to observe a coating film of the coating layer.

Therefore, the ceramic coating rods of Examples 1 and 2 according to the present invention did not generate cracks or peelings even when the impact from the outside was prevented, thereby protecting the chemical conversion film layer 3, thereby preventing corrosion of the steel material 1. By being prevented, as well as extending the life of the steel pedestal 10, it is possible to manufacture the pedestal using steel.

As described above, the superiority of the ceramic-coated steel bumper according to the present invention has been described in detail through the above embodiment, but the present invention is not necessarily limited only by the above configuration, and does not depart from the technical spirit of the present invention. Various substitutions, modifications and variations are possible within the scope of the invention.

1 is a cross-sectional view illustrating a process of sequentially forming a chemical conversion layer and a ceramic coating layer on a steel rod according to the present invention;

FIG. 2 is a process block diagram illustrating the process sequence of FIG. 1.

[Description of Symbols for Main Parts of Drawing]

 1: steel 2: uneven part

 3: chemical conversion layer 4: ceramic coating layer

 10: steel bumper

Claims (8)

In the steel rod 10, the main body is made of steel, The steel material 1 is formed with an uneven portion 2 on the outer surface, And the chemical conversion film layer 3 is formed on the surface of the uneven portion 2, Ceramic coating steel bumper, characterized in that the ceramic coating layer (4) is laminated to the outside of the chemical conversion layer (3). The method of claim 1, The ceramic coating layer 4 is composed of 65 to 83 parts by weight of inorganic binder, 10 to 19 parts by weight of functional filler, 5 to 15 parts by weight of ceramic powder, and 1 to 2 parts by weight of pigment, based on 100 parts by weight of the ceramic coating composition. Ceramic-coated steel bumper, characterized in that. The method of claim 2, The inorganic binder is a ceramic coated steel rod, characterized in that consisting of 50 to 70% by weight of the silane compound and 30 to 50% by weight of the silica sol. The method of claim 3, wherein The silane compound is methyltrimethoxysilane, ethyltrimethoxysilane, normalpropyltrimethoxysilane, phenyltrimethoxysilane, vinyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, normalpropyltri In ethoxysilane, phenyltriethoxysilane, vinyltriethoxysilane, trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, tetraethoxysilane or heptadecafluorodecyltrimethoxysilane Ceramic-coated steel pebble, characterized in that one or more selected and used. The method of claim 3, wherein The silica sol is a ceramic-coated steel bumper, characterized in that 60 to 80% by weight of water mixed with 20 to 40% by weight of powder silicon oxide (SiO ₂ ) of 0.2 ~ 1.0 particle size. The method of claim 2, The functional fillers include potassium titanate and alumina or quartz-monzonite, gneiss, rhyolite tuff or tourmaline, loess, mica, amethyst, raw ore, bamboo charcoal, royal stone, noble stone, obsidian, elvanite, ore mineral Ceramic-coated steel boulders using one or more mixtures of lava, ghost stone or algae coal, and charcoal. The method of claim 2, The ceramic powder is mixed with a far infrared ray emitting material and an anion emitting material in a 1: 1 weight ratio, The far-infrared radiation material is selected from one or more mixtures of tourmaline, ocher, chorionic mica, amethyst, raw ore, bamboo charcoal, uwang seok, guiyang, obsidian, elvan, ore, lava, and noble stone, The anion-emitting material is a ceramic coated steel bumper, characterized in that one or more selected from strontium, vanadium, zirconium, zirconia, cerium, neodymium, lanthanum, barium, rubidium, cesium, gallium is selected and used. In the method for producing a pedestal made of a steel body, A pretreatment step (100) for pretreating the surface of the steel material (1) which is the main body; A chemical conversion film forming step (200) for forming the chemical conversion film layer (3) on the surface of the pretreated steel material (1); A ceramic coating layer forming process (300) for forming a ceramic coating layer (4) by laminating it on the outer surface of the chemical conversion layer (3); A firing process 400 for heating the steel bumps on which the chemical conversion layer and the ceramic coating layer are formed to cure the coating layer; A method of manufacturing a ceramic coated steel bumper, wherein a chemical conversion layer and a ceramic coating layer are formed on an outer surface of the steel.

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