KR102145952B1 - Method for manufacturing golf putter head using multi-layer material and golf putter head manufactured thereby - Google Patents

Abstract

The present invention comprises the steps of: (a) manufacturing a multilayer material for manufacturing a golf putter head; (b) processing the multi-layered material to produce a golf putter head shaped body; (c) etching the surface of the golf putter head-shaped molded body to form a pattern on the surface; And (d) polishing the surface of the molded body in the shape of the golf putter head that has been etched and subjected to nickel plating treatment; and a method of manufacturing a golf putter head using a multi-layered material comprising a.

Description

A method of manufacturing a golf putter head using a multi-layered material, and a golf putter head manufactured by the method {METHOD FOR MANUFACTURING GOLF PUTTER HEAD USING MULTI-LAYER MATERIAL AND GOLF PUTTER HEAD MANUFACTURED THEREBY}

The present invention relates to a method of manufacturing a golf putter head and a golf putter head manufactured thereby, and more particularly, to a method of manufacturing a golf putter head using a multilayer material, and a golf putter head manufactured thereby.

Golf clubs can be used selectively according to the location and quality of the golf ball, distance from the hole, and surrounding conditions. Various woods including drivers, 1 to 9, It consists of one set of iron, wedge and putter.

Among them, the putter plays a role of hitting or pushing a golf ball with a hitting surface formed on the club head so that the golf ball can be put into the hole of the green, which is the final purpose in a golf game. At this time, it is very important that the hitting surface is smoothly impacted so that it does not slip or bounce off too much.

The head of such a putter is generally formed by pouring an alloy of tin (Sn) or copper (Cu), which is a moderately soft and strong material, into a mold having a shape of a putter head, and then forming a thin plate of aluminum (Al) and copper on the hitting surface of the head. It is manufactured by attaching materials such as (Cu) and silver (Ag) and finishing the surface.

However, the putter head manufactured as described above cannot achieve the function as a putter as it is easily detached or the ball surface is deformed, and thus a slice or hook is generated at impact, which greatly reduces the putting accuracy and consistency. I have a problem.

Korean Patent Publication No. 10-2001-0095805 (Publication date: 2001.11.07.) Korean Patent Registration No. 10-0859630 (Registration Date: 2008.09.16.) Korean Patent Registration No. 10-1586490 (Registration Date: 2016.01.12.)

The present invention was devised to solve the problems of the prior art as described above, and the accuracy and consistency when putting using a multi-layered material such as a multi-layered material obtained by repeatedly performing refining and monolithic processes on a steel ingot are significantly improved compared to the conventional one. It is intended to provide a method for manufacturing a golf putter head.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Since the embodiments according to the concept of the present invention can apply various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific form of disclosure, and should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of a set feature, number, step, action, component, part, or combination thereof, but one or more other features or numbers It is to be understood that the possibility of addition or presence of, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

In order to achieve the technical problem as described above, the present invention comprises the steps of: (a) manufacturing a multilayer material for manufacturing a golf putter head; (b) processing the multi-layered material to produce a golf putter head shaped body; (c) etching the surface of the golf putter head-shaped molded body to form a pattern on the surface; And (d) polishing the surface of the etched golf putter head-shaped molded body and performing nickel plating on the surface of the golf putter head.

In this case, the step (a) includes (a-1) heating the iron wrought iron obtained by smelting the iron iron in a danya furnace; (a-2) producing a steel ingot by forging the iron ingot heated in step (a-1); (a-3) coating the outer surface of the iron steel ingot prepared in step (a-2) with charcoal and loess; (a-4) heating the four iron steel ingots coated in step (a-3), stacking the four iron steel ingots along the lengthwise direction, and then making a single welded iron steel ingot by bonding them; And (a-5) coating the outer surface of the monolithic steel ingot with the charcoal and ocher, heating the coated monolithic steel ingot, and performing a process of overlapping the monolithic steel ingot along the longitudinal direction to join two or more times. It characterized in that it comprises a step.

As described above, by repeating the process of refining and bonding a steel ingot produced using iron as a raw material several times, the strength and toughness of the iron iron steel ingot is increased, and a multilayer material from which impurities and voids are removed can be manufactured with high yield. have.

The step (a-1) is a step of heating the iron wrought iron obtained by smelting iron iron in a Danya furnace. For example, the iron smelting iron is heated by injecting air into the smelting furnace supplied with charcoal through the air outlet of the smelting furnace to light the charcoal to heat the smelting furnace at about 1300°C to 1800°C, and about 1:2 to 1:3 It may be formed by reducing the sand iron while discharging the slag by alternately introducing the sand iron and the charcoal into the smelting furnace at a weight ratio of. The iron wrought iron is manufactured by first smelting iron smelting iron in a smelting furnace, it is porous, has a non-uniform microstructure, and has many impurities, so the material properties are not suitable for manufacturing various tools using the iron wrought iron directly. not. In this step, the iron wrought iron is heated in a danya furnace to make it into a semi-melted state, and then the iron lumped iron is refined and bonded in a step to be described later to improve the characteristics of the iron wrought iron. As described above, when the iron wrought iron is heated to a high temperature in a Danya furnace, impurities are melted in the iron lumped iron and eluted to the outside of the iron wrought iron can be expected, and the iron lumped iron is preferably used in a Danya furnace at 1250°C. It can be configured to heat.

Charcoal can be used to heat the Danya-ro as described above. The charcoal is preferably made of white charcoal, which is pine charcoal with little impurities and has strong thermal power, and has a suitable size to maintain a sufficient high temperature inside the Danya-ro. Danya furnace can be heated using slices of split charcoal.

)이 잔류하는 구조를 나타낸다. 이에 따라, 상기와 같이 1차 제련된 사철 괴련철은 도구를 만들기에 적합한 소재가 될 수 없어 사철 괴련철을 정련하는 과정이 필수적이다.In addition, the iron lump iron is preferably, iron oxide (FeO) 85 to 95% by weight, silica (SiO ₂ ) 3 to 7% by weight, aluminum oxide (Al ₂ O ₃ ) 2 to 4% by weight, calcium oxide (CaO ) 0.1 to 0.5% by weight, manganese oxide (MnO) 0.1 to 0.5% by weight, titanium dioxide (TiO ₂ ) 0.4 to 0.7% by weight and vanadium oxide (V ₂ O ₅ ) It may be formed by using sand iron containing 0.2 to 0.5% by weight, and the sand iron wrought iron produced by primary smelting of the sand iron contains a considerable amount of coarse non-metallic inclusions such as glassy slag, and the proportion of impurities and voids is It is 25% or more, the carbon content is not constant, and the beadmansteton structure (

) Represents the structure that remains. Accordingly, since the primary smelted iron wrought iron cannot be a suitable material for making tools, a process of refining the wrought iron wrought iron is essential.

The step (a-2) is a step of forging the iron iron lump iron heated in the step (a-1), and forging the iron iron iron ingot heated as described above in a lengthwise direction according to a preset length to form a iron iron steel ingot. I can.

The step (a-3) is a step of coating the outer surface of the steel ingot forged in step (a-2) with charcoal and loess. In this step, the outer surface of the bonded steel ingot is coated with charcoal and loess to prevent decarburization occurring in the steel ingot during refining and welding processes, and configured to prevent softening due to decarburization generated in the steel ingot. I can. The charcoal may be a powder obtained by pulverizing pine charcoal, and the loess may be used by mixing ocher, white clay, and water in a predetermined ratio, and the ratio is not limited thereto.

The step (a-4) is a step of heating the sand iron steel ingot coated in step (a-3), stacking the sand iron steel ingots along the longitudinal direction, and then joining them. The strength of the sand iron steel ingots having many impurities and voids In order to improve the, it is possible to manufacture a single-junction steel ingot by removing impurities contained in the four-steel ingot through a single-joint process in which the heated steel ingot is overlapped along the length direction and forged. In this step, as described above, the steel ingot coated with charcoal and loess is beaten or pressed with a hammer, etc., and a single-contacted steel ingot can be formed through a single-joint process of stretching the steel ingot in the longitudinal direction. If the steel ingot is continuously pressurized by a mechanical method as described above, impurities are eluted to the outside of the ingot by pressure, and non-metallic inclusions are elongated along the single interface and crystal grains are refined, thereby increasing strength and toughness. Together with the removal of impurities and voids, it is possible to form a single-sided steel ingot with remarkably improved material properties. In addition, in this step, it is preferable to heat the iron steel ingot in a Danya furnace at 1250 °C. And, in order to superimpose the above-described steel ingot, one part of the steel ingot can be cut and joined in half, and two parts can be cut and joined in three stages, and several parts are cut and joined in multiple stages. It is also possible, but it is more preferable to overlap the steel ingots in half and join them. In order to cut the steel ingot, a cutting tool such as an ax may be used, but is not limited thereto.

In the step (a-5), the outer surface of the solid iron ingot is coated with the charcoal and loess, and the coated sand iron ingot is heated, and then the four iron steel ingots are overlapped in half along the length direction to join them, The step (a-5) may be performed several times. In the above-described single-junction process, as the number of times increases, the crystal grains of the iron steel ingot become finer, and the content of impurities and voids may be decreased.In the present invention, the step (a-5) is performed several times using the manufactured single-thread steel ingot. By configuring the single joint treatment to further improve the material properties of the single joint steel ingot, the step (a-5) can be configured to perform the single joint treatment more than 12 times by repeating 11 or more times.

In addition, the molded body in the shape of a golf putter head manufactured in step (b),

A hosel having a boss for receiving one end of the shaft; And

A method of manufacturing a golf putter head using a multilayer material, comprising a body including a front face, a heel end, and a toe end for applying a golf ball impact Provides.

Further, the present invention provides a golf putter head manufactured by a method of manufacturing a golf putter head using the multilayer material in another aspect of the present invention.

Further, the present invention provides a golf putter having a golf putter head using the multilayer material in another aspect of the present invention.

Golf putter heads manufactured using multi-layered materials such as multi-layered materials obtained by repeating the process of refining and joining steel ingots produced using private iron as a raw material according to the present invention are remarkably more accurate and consistent than conventional Improved putter can be implemented.

1 is a photograph showing each step of a golf putter manufacturing process using a steel ingot according to the present embodiment.
2(a) and 2(b) are photographs of a head face surface of a putter manufactured according to an exemplary embodiment of the present application and a photograph of an opposite surface of the head face.
3(a) and 3(b) are high-speed photos of a putting scene using a putter according to an exemplary embodiment of the present application and a high-speed photograph of a putting scene using a putter according to a comparative example.

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

The examples presented are only specific examples of the present invention, and are not intended to limit the scope of the present invention.

<Example>

(1) Manufacture of multi-layered material for golf putter heads through refining and welding of lump iron

In order to use lump iron produced by smelting iron iron, it is necessary to remove impurities and reduce porosity. At this time, jointing is repeatedly performed through forging, which means hammering, and refining is repeated to dissolve impurities by continuously heating the iron iron in a high-temperature fire. It can remove impurities and reduce porosity. In addition, it is possible to manufacture a high-strength steel ingot by miniaturizing the microstructure through a single contact.

Materials prepared for refining and bonding are 1.16 kg and 1 kg of charcoal, charcoal, and rice straw, respectively, water, and sand made of 1.16 kg and 10.52 kg of loess and water, respectively. After that, a Danya furnace was prepared, the process of heating the lump iron and forging it on the anvil was tied once, and this was repeated to produce a multilayered material.

At this time, the amount of charcoal charged for refining and welding and the number of forgings were performed according to the table 1 below. After conducting a total of 12 processes, the steel ingots of multi-layered material were finally produced.

More specifically, the fabrication of multi-layer materials through the process of refining and welding of lump iron was carried out in the following order.

Initially, charcoal (20kg) was added and the furnace was heated by raising the temperature to 1250°C. After that, the first refining was carried out by charging the iron for the first time. After taking out the twisted iron, it was forged using a hammer and then forged again using a mechanical hammer. After that, the forged iron was added to the loess water to carburize, and the iron was added to the place where charcoal and rice straw were mixed to prevent decarburization, and then put it in the furnace again and additionally charged with charcoal. The above process was named as the first round. After this, a total of 12 such steps were performed, and the shape was made into a rectangle. Excluding the 1st round, from the 2nd round, a groove was made in the center of the heated lump iron and the process of joining the iron on both sides around the groove was added. Through the above steps, a multi-layered material was produced in the final step.

The ratio of impurities and voids in the material in the process of manufacturing the multilayered material was calculated using the equation shown below. According to the results, the ratio of impurities and voids in one single-junction steel ingot was 26.09%, but 12 times the single junction In the case of the steel ingot, it was confirmed that the ratio of impurities and voids decreased to 1.8%.

Table 2 below is a result of XRF measurement performed four times on the iron steel ingot, according to this, it can be seen that the Fe content is more than 97.98wt%, and it can be seen that a small amount of components such as Al are detected. Through this, it can be seen that the golf putter head manufactured using the iron steel ingot is made of pure iron having a high Fe content.

(2) Manufacture of a golf putter using the multilayer material prepared in (1) above

A golf putter was manufactured using the multilayer material manufactured in (1), and the manufacturing process thereof will be described as follows with reference to FIG. 1.

First, a rectangular steel ingot was manufactured by removing foreign matter and corrosion on the surface of the steel ingot using a'double-headed milling machine' (Fig. 1A). Next, the rectangular steel ingot is first processed into a golf club putter head shape using a'machine center 4-axis high-speed processing machine' (B and C in Fig. 1), and etching is performed using an etching solution to create a pattern on the head surface. Was expressed (Fig. 1D). After the etching was completed, the surface was ground with sand paper (#800) (Fig. 1E), and after the surface finish was completed, hard nickel plating treatment was performed (Fig. 1F), and the golf putter production was completed by connecting the shaft and the handle. (Fig. 1G).

Tables 3 and 4 below are the results of a putting experiment conducted by the Korea Sports Development Institute (KISS) sporting goods testing laboratory for putters (Examples) manufactured according to the examples of the present application and A company's putters (comparative examples) that are distributed on the market. Represents.

Table 3 below shows each putter head into three equal parts: the inside (heel side), the center and the outside (toe side), and in the case of putting each as a putting point, the flying distance in the putting direction and the left and right departure distance based on the target direction Is the result of measuring.

According to Table 3, it was found that the putter prepared in the Example significantly reduced the left and right departure distance based on the target direction when putting compared to the putter of the Comparative Example.

That is, in terms of putting accuracy, it was confirmed that the putter prepared in the Example far outpaced the putter of the Comparative Example.

*Left and right: Left (-), right (+) in the target direction

*Putting method: Free-fall putting after backswing at an angle of 0 to 10 degrees on the shaft in the putting machine (average of 5 measurements)

Table 4 below shows the results measured through high-speed photography (see FIG. 3) leaving the ground after impact when putting with each putter.

For reference, when the ball leaves the ground due to impact and then touches the ground again, the ball slides on the grass and rolls forward again due to friction.At this time, the ball does not rotate and slides in the skid zone (after putting the ball In the sliding part), the ball is highly likely to move in an unwanted direction due to the influence of the turf condition, slope, and humidity, so a shorter sliding distance is preferable.

According to the results shown in Table 4 below, when putting with the putter manufactured in the Example, the distance the ball slides without rotation was found to decrease by 25% compared to the putter according to the Comparative Example, and from this, in terms of putting control It was confirmed that the putter performance of the example was significantly superior to that of the comparative example.

*Putting method: Free fall putting after swinging the shaft at an angle of 0 to 10 degrees on the putting machine.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings. You can understand that there is. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

Claims (3)

(a) manufacturing a multilayer material for manufacturing a golf putter head;
(b) a hosel having a boss for receiving one end of the shaft by processing the multilayer material; And manufacturing a golf putter head-shaped molded body including a body including a front face, a heel end, and a toe end for applying an impact to the golf ball.
(c) etching the surface of the golf putter head-shaped molded body to form a pattern on the surface; And
(d) polishing the surface of the etched golf putter head-shaped molded body and performing nickel plating treatment; and,
The step (a) includes steps (a-1), (a-2), (a-3), (a-4) and (a-5) steps, and the following steps (a-4) ) And (a-5) is a method of manufacturing a golf putter head using a multi-layered material, characterized in that it is performed in a Danya-ro maintained at 1250°C:
(a-1) heating the iron iron wrought iron obtained by smelting iron iron in a Danya furnace;
(a-2) preparing a steel ingot containing 97.98wt% of Fe by forging the iron iron lump iron heated in step (a-1);
(a-3) coating the outer surface of the iron steel ingot prepared in step (a-2) with charcoal and loess;
(a-4) heating the four iron steel ingots coated in step (a-3), stacking the four iron steel ingots along the longitudinal direction, and then joining them to produce a single square iron steel ingot; And
(a-5) coating the outer surface of the monolithic steel ingot with the charcoal and ocher, heating the coated monolithic steel ingot, and performing a process of overlapping the monolithic steel ingots along the length direction to join 11 times. delete A golf putter comprising a golf putter head manufactured by the method according to claim 1.

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