KR20110059342A - Environment-friendly process for manufacturing colored fishing hooks having excellent corrosion resistance - Google Patents

Abstract

PURPOSE: A manufacturing method of an environment-friendly color fish hook having high corrosion resistance is provided to secure high corrosion resistance by forming a transparent resin coating layer on the surface of the color fish hook. CONSTITUTION: A manufacturing method of an environment-friendly color fish hook having high corrosion resistance is constituted as follows. After a metal material is processed in a fish hook shape, a heat treatment or an austempering tempering heat treatment is performed(S10). A surface treatment is performed(S20). An oxidation process is performed to express a color in the surface of the fish hook(S30). A transparent resin coating is performed(S40).

Description

Environment-friendly Process for Manufacturing Colored Fishing Hooks having Excellent Corrosion Resistance}

The present invention relates to a method for manufacturing eco-friendly and highly corrosion-resistant color fishing needles, and more particularly, in order to enhance the picking effect to express the oxidation color of various colors in the fishing needles and do not corrode even after long-term use in a corrosive environment such as sea water It relates to a method for manufacturing environmentally friendly and highly corrosion-resistant color fishing needles.

Colored fishing needles are widely used for leisure fishing because bait is mounted and the colored part protruding from the lure exerts the fishing effect as a fake fishing bait or in the case of lure fishing, the fishing needle itself acts as a fake bait.

The color of the fishing needle is determined empirically depending on the type of fish to be fished or the weather conditions. Generally, silver or bronze is preferable when the weather is clear or the water is clean, and when the water is dirty or cloudy, Dark pink is preferred.

In terms of the type of fish targeted, the silver hook color is the basic color used in all cases, and gold is a color that can be easily seen underwater, and is mainly used for fishing such as horse mackerel that responds well to sparkling. It is also easy to catch on the eyes of people, so it is easy to deal with bait. Black is an inconspicuous color that is useful when you have a lot of catches with bait thieves such as blowfish, fish, and fish.

Korean Patent No. 10-0820867 proposed by the present inventors as a conventional technique for imparting color to such a fishing needle has a pinching effect by forming an oxide layer of various colors by oxidation after plating the fishing needle. The height is presented a method of manufacturing colored fishing needles. The invention patent comprises a color oxidation process step for forming a color oxide film layer on the surface by performing a nickel plating, chromium plating or a composite plating of the fishing needles and oxidative heat treatment in an oxidizing atmosphere of 180 ℃ ~ 3,000 ℃.

By the way, the manufacturing method of the color fishing needle can not avoid the discharge of the environmental load material according to the implementation of the plating process, and these plating may cause various types of defects if strict process control is not performed, for example, degreasing If is not done properly, stains or discoloration may occur, and the desired color may not be formed properly in the oxidation treatment process. In addition, poor pH control of the plating solution may cause the pit or pinhole to leak, which may cause premature corrosion of the fishing hook.

On the other hand, Japanese Utility Model Publication No. 3011437 proposes a method of applying corrosion to the fishing needles to give corrosion resistance and giving a color by painting in an arbitrary color, and this method also discharges environmental load substances in the plating and painting process. And there is a disadvantage in that the manufacturing process is high due to the complicated process.

In addition, tin plating after commercial plating needles and tin plating after copper plating for leisure fishing are still limited in providing excellent corrosion resistance to the fishing needles mainly used in the seawater atmosphere.

The present invention has been proposed in view of the problems of the prior art, and an object of the present invention is to provide a manufacturing method of a color fishing needle excellent in corrosion resistance with various colors in a low manufacturing cost and environmentally friendly method.

     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, (a) performing a hardening heat treatment after machining the metal material in the shape of a fishing needle; (b) performing a surface processing on the fishing needles passed through step (a); (c) performing an oxidation treatment to express color on the surface of the fishing needle which has passed the step (b); And (d) provides a method for producing an environmentally friendly and high corrosion-resistant color fishing needle comprising the step of performing a transparent resin coating on the fishing needles (c).

The hardening heat treatment is a process for imparting high strength to a fishing needle, and may be performed after tempering heat treatment or an austempering heat treatment.

The surface processing step is to remove oxides or foreign substances formed during curing heat treatment and to improve surface roughness, and may be performed by shot blasting, sand blasting, or barrel polishing.

The oxidation treatment process for the color expression is to form a color oxide film layer by oxidation treatment in a high temperature oxidizing atmosphere. The appearance of color determines the color of the final product. At this time, the resin coating can be easily adsorbed on the oxide layer formed to increase corrosion resistance. If the oxide layer is not formed, the resin coating layer is inferior in adhesion to the base material and the thickness of the resin coating layer is nonuniform, resulting in low corrosion resistance.

The transparent resin coating is to give a high corrosion resistance by forming a transparent resin film on the surface of the color fishing needle.

The present invention made as described above provides an effect that can be produced in a low-cost manufacturing cost and environmentally friendly color fishing needles excellent corrosion resistance.

First, the present invention is subjected to a hardening heat treatment such as tempering heat treatment or ostempering after quenching to give high strength to the fishing needle machined from a material such as high carbon steel wire or stainless steel. (S10)

The tempering heat treatment after the quenching is to impart high strength to the fishing needles by heating the fishing needles to the austenite region and then quenching them to room temperature to obtain martensite structure.

Austempering heat treatment is a process to obtain bainite structure by heating the fishing needle to the austenite region and then maintaining it in a temperature zone higher than the martensite transformation start temperature (Ms point) .This prevents heat treatment deformation and heat treatment cracking and tempered martensite. It has high strength similar to tempered martensite and can give high toughness.

Specific processes, such as the heating temperature, time and cooling method of the tempering heat treatment or the osmosis heat treatment after quenching, may vary depending on the required strength, material, and dimensions.

Then, the surface processing step is performed on the fishing needle subjected to the curing heat treatment. (S20)

In general, since the curing heat treatment is heated to a high temperature of 790 ℃ or higher depending on the material, after cooling, the oxide layer or foreign matter is present on the surface it may be difficult to express the color by the oxidation treatment afterwards.

Therefore, the surface processing process should be performed by shot blasting, sand blasting or barrel polishing to remove the surface oxide layer or foreign matter. The shot blast or sand blast is a surface processing for removing surface oxide and foreign matter by spraying or projecting steel shot, steel grit or cut wire shot, metal oxide or sand at high speed by using air pressure or centrifugal force. The process ensures that only the surface oxides and debris are removed without damaging the substrate as much as possible.

The specific process conditions for surface activation for this purpose vary depending on the sand or shot used, but the approximate air pressure is 0.1 MPa to 0.8 MPa, the process time is 30 seconds to 2 minutes, and between the fishing needle and the air gun The distance is preferably set to 2 cm to 10 cm.

If the air pressure is lower than this, the time required to remove oxides and foreign substances is too long to be economical, and if the air pressure is higher than this, the base metal may be damaged even in a short time treatment. If the distance between the fishing needle and the air gun (air gun) is shorter than this, the surface roughness is not uniform, while if longer than this there is a problem that the surface processing does not proceed properly.

Barrel polishing is a process in which the surface processing is performed by inserting abrasive stones and fishing needles into the barrel tank and using the centrifugal force generated when turning the rotating shaft at high speed, causing strong pressure and friction to the fishing needles mixed with the abrasive stones.

The specific process conditions for surface activation for this purpose are a mixture of 500cc ~ 1,000cc of abrasive stone, 10cc ~ 60cc of compound, and 300cc ~ 800cc of water, which is mixed for 10 minutes ~ depending on the amount of fishing needle charged to grind until surface oxide is removed. 50 minutes treatment is recommended.

In addition, after the barrel polishing process to remove the oxide or foreign matter, it may be further performed to give a gloss by varying the barrel conditions such as abrasive stone and compound.

Removal of the oxide or foreign matter after the curing heat treatment is essential for the color color development process described below. If gloss is given to the fishing needle from which the oxide or the foreign material is removed, more beautiful and various color colors can be obtained.

Next, the surface-treated fishing needle is oxidized in a high temperature oxidizing atmosphere to express color color. (S30)

In the color color development process, the fishing needle is heated in a high temperature oxidizing atmosphere to form an oxide layer having a thickness of several nm to several hundred nm on the surface of the fishing needle, thereby transmitting the light reflected from the oxide layer and the oxide layer to pass through the surface of the fishing needle. When the reflected light interferes with each other to express a unique color, various beautiful color colors such as gold, purple, purple, blue, and black can be obtained according to oxidation temperature, time, and oxidation atmosphere.

The color color expression process may be a gas method including a salt bath method, a vacuum method or a plasma method. The oxidizing gas in the gas method may be used alone or in a mixture of exothermic gas, oxygen, air, carbon dioxide, and steam. In addition, the oxidation treatment may be performed by including nitrogen gas in the oxidizing gas.

Oxidation treatment conditions are carried out for 5 seconds to 4 hours in the range of 150 ° C to 1,200 ° C, depending on the color to be expressed respectively, when the oxidation treatment temperature is less than 150 ° C If the oxidation treatment is not sufficiently performed, a desired color oxide film layer cannot be obtained, and if it exceeds 1200 ° C, deformation and softening of the fishing needle may occur.

In addition, in order to obtain an oxide film layer having a desired thickness, heating must be performed for a predetermined time or more, but at a high temperature of about 1,200 ° C., a desired beautiful color can be obtained even by heating for a short time of about 5 seconds.

Since the color forming process by oxidation is a chemical reaction called bonding of metal and oxygen in the atmosphere, there is no problem of environmental pollution occurring in the plating or painting process.

On the other hand, since the surface of the fishing needle subjected to the surface processing is smooth, the resin coating film, which will be described later, may not be adhered well and peeling may occur. Since the oxide layer formed by the oxidation treatment contains many pores, the resin coating film is formed in these pores. It is easy to adsorb and exhibits high corrosion resistance.

Then, a step of forming a transparent resin coating film layer for the fishing needle. (S40)

The transparent coating resin is used to impart excellent corrosion resistance to the fishing needles. The method is to spray, deposit, or apply powder coating or electrodeposition of a transparent liquid resin paint such as polyethylene, polyurethane, polyacrylic, or polyalkyd. By the method, it is composed of a process of applying a single layer or multiple layers to the surface of the material 10㎛ ~ 80㎛ thickness and drying at a temperature range of 30 ℃ to 300 ℃, according to this process transparent resin coating layer on the surface of the fishing needle Is formed.

The transparent resin coating layer functions to give particularly high corrosion resistance to the fishing needle mainly used in sea water.

As described above, according to the present invention, it is excellent in corrosion resistance and can express various colors as compared with the conventional plating or coating method, it is possible to manufacture a high corrosion-resistant color fishing needle in an environmentally friendly method.

Hereinafter, the present invention will be described in more detail by way of examples.

≪ Example 1 >

The fishing needles machined with a SM 70C wire rod having a diameter of 1.24 mm were held at 790 ° C. for 10 minutes, and then quenched in water at room temperature, followed by tempering heat treatment for 1 hour at 200 ° C. Thereafter, the fishing needle was put into the barrel tank of the centrifugal grinding machine together with 500cc of the abrasive stone, 30cc of the compound, and 500cc of the water, followed by a grinding process for 20 minutes to remove the oxide from the surface of the fishing needle, and then polished again. Further run for minutes.

The fishing needles thus obtained were oxidized in an air atmosphere at 180 ° C. and 220 ° C. for 2 hours to produce colored fishing needles expressing golden and pale purple colors, respectively.

Subsequently, powder coating was performed on the colored fishing needles with a polyester resin to form a resin coating layer having a thickness of 60 μm, and a salt spray test (KS D 9502) was performed.

<Example 2>

The fishing needles machined from 0.89 mm diameter SM 80C wire were heated at 790 ° C for 5 minutes, held in a salt bath at 280 ° C for 35 minutes, and then subjected to an ostempering heat treatment with water at room temperature to give a hardness value of 55 HRC. Got it.

The fishing needle was put into a barrel tank of a centrifugal polishing machine with a mixture of 600cc abrasive stone, 20cc compound, and 500cc water, and the polishing process was performed for 25 minutes to remove oxides from the surface of the fishing needle, and then polished for 20 minutes. It carried out more.

The fishing needles thus obtained were oxidized for 2 hours in a mixed gas atmosphere in which air and oxygen at 260 ° C. were mixed at a volume ratio of 50:50 to prepare colored fishing needles expressing blue color.

Subsequently, powder coating was performed on the colored fishing needles with an acrylic resin to form a resin coating film layer having a thickness of 50 μm, followed by a salt spray test.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims to be described.

1 is a process chart showing a manufacturing method of eco-friendly and highly corrosion-resistant color fishing needle according to the present invention.

Claims (3)

 (a) machining the metal material into the shape of a fishing needle, and then performing tempering heat treatment or ostempering heat treatment after quenching; (b) performing a surface processing on the fishing needles passed through step (a); (c) performing an oxidation treatment to express color on the surface of the fishing needle which has passed the step (b); And (d) a method for producing an eco-friendly and highly corrosion-resistant color fishing needle comprising the step of performing a transparent resin coating on the fishing needles (c). The method of claim 1, Surface treatment in the step (b) is a method of manufacturing an environmentally friendly and highly corrosion-resistant color fishing needle, characterized in that the treatment by one method selected from shot blast, sand blast and barrel polishing. The method of claim 1, The method of manufacturing an eco-friendly and highly corrosion-resistant color fishing needle, characterized in that the oxidation treatment in the step (c) is carried out by maintaining for 5 seconds to 4 hours in an oxidizing atmosphere of 150 ℃ to 1,200 ℃.

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