Alloy for manufacturing golf club head

Abstract

The invention relates to an alloy for manufacturing a golf club head, which is used for solving the problem that the angle of the existing golf club head is difficult to adjust. Comprising the following components in percentage by weight: 0.1 to 0.15 percent of carbon, 1 to 1.5 percent of silicon, 1 to 1.5 percent of manganese, 3.1 to 3.7 percent of nickel, 13.5 to 15.5 percent of chromium, 1 to 1.7 percent of molybdenum and the balance of iron. Therefore, the golf club head made of the alloy has the effect of better angle adjusting property.

Description

Technical Field

[0001] The present invention relates to an alloy for manufacturing a golf club head, and in particular to an alloy for manufacturing a golf club head that is easy to adjust the angle. Background Art

[0002] Steel is widely used as a material for forming golf club heads due to its excellent strength, corrosion resistance, and heat resistance. However, existing golf club heads made of steel often focus on overall strength while neglecting their toughness. This results in a high resistance to the twisting force of the club, making it difficult to adjust the angle, and thus unable to meet the shooting needs of different players. Furthermore, if the hardness of the golf club head is reduced to facilitate angle adjustment and improve toughness, it often results in insufficient strength. In view of this, there is still a need for improvement in the steel materials currently used to manufacture golf club heads. Summary of the Invention

[0003] To solve the above problems, an object of the present invention is to provide an alloy for manufacturing a golf club head, which can be easily adjusted in angle and has good strength.

[0004] The quantifiers “a” or “an” used in the elements and components described throughout the present invention are only for convenience and to provide a general meaning of the scope of the present invention; they should be interpreted in the present invention as including one or at least one, and a single concept also includes multiple cases, unless it is obvious that it means otherwise.

[0005] The alloy for manufacturing a golf club head of the present invention comprises, by weight, 0.1-0.15% carbon, 1-1.5% silicon, 1-1.5% manganese, 3.1-3.7% nickel, 13.5-15.5% chromium, 1-1.7% molybdenum, and the balance iron.

[0006] Therefore, the alloy for manufacturing golf club heads of the present invention has a relatively low silicon content and a relatively high nickel content to form a specific composition ratio of the alloy, so that the golf club heads made of the alloy can have better angle adjustment properties.

[0007] The alloy comprises 1.1 to 1.3% silicon by weight, so that the club head made of the alloy can have both good yield strength and elongation.

[0008] The nickel content is 3.2-3.5% by weight, so that the club head made of the alloy has better plasticity and toughness.

[0009] The alloy comprises 13.75-14.25% chromium by weight, so that the club head made of the alloy can be formed with clear font lines or grooves.

[0010] The alloy comprises 13.75-14.25% chromium, 3.2-3.5% nickel, and 1.1-1.3% silicon by weight. Thus, the golf club head made of the alloy can have better angle adjustment properties due to the combination of the above alloy composition. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : Existing alloy steel head and pattern texture map;

[0012] Figure 2 : A club head and pattern texture diagram made in one embodiment of the present invention;

[0013] Figure 3 : The striking panel and line groove pattern made of existing alloy steel;

[0014] Figure 4 : A striking panel and a groove pattern made according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] In order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below and described in detail with reference to the accompanying drawings; in addition, the same symbols in different drawings are regarded as the same and their descriptions are omitted.

[0016] A preferred embodiment of the alloy for manufacturing a golf club head of the present invention includes carbon (C), silicon (Si), manganese (Mn), nickel (Ni), chromium (Cr), molybdenum (Mo), and a balance of iron (Fe). Thus, the alloy for manufacturing a golf club head can form an alloy steel.

[0017] Specifically, the alloy used to manufacture the golf club head includes, by weight, 0.1-0.15% carbon, 1-1.5% silicon, 1-1.5% manganese, 3.1-3.7% nickel, 13.5-15.5% chromium, 1-1.7% molybdenum, and the balance iron. In this embodiment, the alloy used to manufacture the golf club head may also include phosphorus (P) of 0.04% or less but not zero, sulfur (S) of 0.03% or less but not zero, and copper (Cu) of 0.3% or less but not zero.

[0018] Specifically, carbon and manganese stabilize the formation of austenite in the alloy, while molybdenum improves the alloy's corrosion resistance. Therefore, the alloy used to manufacture golf club heads can have relatively high carbon, manganese, and molybdenum content, resulting in superior strength. Silicon improves the alloy's oxidation resistance, preventing rust. Furthermore, while the addition of silicon helps improve the alloy's yield strength, it is negatively correlated with the alloy's elongation. Therefore, in this embodiment, the alloy used to manufacture golf club heads can include 1.1-1.3% silicon, allowing the alloy to have a relatively low silicon content while achieving both superior yield strength and elongation. Furthermore, nickel influences the crystal structure of steel. Specifically, the alloy used to manufacture golf club heads can include 3.2-3.5% nickel, which contributes to the alloy's austenitic structure, thereby imparting superior plasticity and toughness. Thus, by making the alloy used for manufacturing the golf club head have a relatively low silicon content and a relatively high nickel content, the club head made of the alloy has better angle adjustment performance.

[0019] The addition of chromium metal can improve the heat storage properties of the alloy used to manufacture golf club heads, thereby reducing the material shrinkage and affecting the appearance of the club head when the alloy is used to manufacture golf club heads. Specifically, the alloy used to manufacture golf club heads can include 13.75-14.25% chromium. As a result, when the alloy is used to manufacture golf club heads, the club head can form clear font lines or grooves. In another embodiment, the alloy used to manufacture golf club heads can include the aforementioned 13.75-14.25% chromium, 3.2-3.5% nickel, and 1.1-1.3% silicon in weight percentage. In this way, the club head made of the alloy used to manufacture golf club heads can have better angle adjustment properties due to the addition of the above alloy composition.

[0020] The alloy for manufacturing a golf club head according to the present invention can be used to manufacture a golf club head. For example, the golf club head alloy can be pressed to form a plurality of alloy ingots, which can then be melted to form an alloy rod. This alloy rod can then be forged to form a golf club head. Alternatively, the plurality of alloy ingots can be melted and then cast to form the golf club head, although this invention is not limited thereto.

[0021] To verify that the alloy composition used to manufacture golf club heads possesses excellent strength, golf club heads were fabricated using conventional steel alloys (Group 1) and the alloy steels of the present invention (Group 2), as shown in Table 1. The angular adjustment properties of the respective shafts were then measured after heating. The results are shown in Table 2. Furthermore, Group 3 in Table 1 shows the compositional ratios of another preferred embodiment of the present invention.

[0022] Table 1. Composition ratio of each group of golf club head alloys in this test (weight %) Table 2. Adjustable angle of golf club heads in each group

[0023]

[0024] The test results above demonstrate that the golf club heads made with the alloy composition of the present invention (Group 2) exhibit lower torque values ​​than those made with the existing steel alloy (Group 1) due to their lower silicon content and higher molybdenum content. Lower torque values ​​facilitate angle adjustment. Therefore, after heating under the same conditions, the shaft of the golf club head of Group 1 can only be adjusted by 1°, while the shaft of the golf club head of Group 2 can be adjusted by 2°. This demonstrates that golf club heads made with the alloy composition of the present invention exhibit superior angle adjustment properties.

[0025] Please refer to Figure 1 、 Figure 2 As shown, Figure 1 The figure shows the club head and pattern texture made of the existing alloy steel (Group 1). The pattern formed by the existing alloy steel has shrinkage cavities, which are mainly caused by the large amount of heat released when the casting material solidifies. In comparison, the club head and pattern texture made by the alloy composition (Group 2) used to manufacture golf club heads of the present invention can reduce the occurrence of shrinkage cavities ( Figure 2 ). In addition, please refer to Figure 3 、 Figure 4 As shown, Figure 3 The striking plate and grooves made of the conventional alloy steel (Group 1) also have many shrinkage cavities in the grooves. However, the striking plate and grooves made of the alloy composition for manufacturing golf club heads of the present invention (Group 2) can reduce the occurrence of shrinkage cavities ( Figure 4 ). It shows that the composition of the alloy used to manufacture the golf club head of the present invention can be cast into castings with better quality.

[0026] Furthermore, the club heads made from the alloys of Groups 1 to 3 were subjected to a solution treatment at 1040°C for 90 minutes, a cryogenic treatment at -73°C for 480 minutes, and an aging treatment at 450-500°C for 240 minutes, respectively. The mechanical properties of the club heads from Groups 1 to 3 were then measured. The results are shown in Table 3. It can be seen that the club heads made from the alloy composition of the present invention (Group 2) have similar mechanical properties to those made from conventional alloy steel (Group 1). In other words, the alloy composition of the present invention can maintain mechanical properties while also providing excellent angle adjustment properties. Furthermore, the striking faceplates made from the alloys of Group 1 and Group 2 were subjected to artillery impact tests. The results are shown in Table 4. It can be seen that even though the striking faceplates made from the alloy composition of the present invention (Group 2) were thinner than the striking faceplates made from conventional alloy steel (Group 1), they still achieved a higher number of strikes than the striking faceplates made from conventional alloy steel. That is, the alloy composition of the present invention can produce a lighter striking panel while maintaining strength.

[0027] Table 3 Mechanical properties of golf club heads in each group

[0028]

[0029]

[0030] Table 4. Bombardment test results of golf club heads of various groups

[0031]

[0032] In summary, the alloy for manufacturing golf club heads of the present invention has a relatively low silicon content to form a specific composition ratio of the alloy, thereby achieving the effect that the golf club heads made of the alloy have better angle adjustment properties.

[0033] Although the present invention has been disclosed using the above-mentioned preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications to the above-mentioned embodiments without departing from the spirit and scope of the present invention. These changes and modifications still fall within the technical scope protected by the present invention. Therefore, the scope of protection of the present invention shall include all changes within the literal meaning and equivalent scope of the appended claims.

Claims

1. An alloy for manufacturing a golf club head, characterized in that: include: In terms of weight percentage, the composition comprises 0.1-0.15% carbon, 1-1.5% silicon, 1-1.5% manganese, 3.1-3.7% nickel, 13.5-15.5% chromium, 1-1.7% molybdenum and the balance iron.

2. The alloy for manufacturing a golf club head according to claim 1, wherein: The invention comprises 1.1 to 1.3% silicon by weight.

3. The alloy for manufacturing a golf club head according to claim 1, wherein: The nickel content is 3.2-3.5% by weight.

4. The alloy for manufacturing a golf club head according to claim 1, wherein: The invention comprises 13.75 to 14.25% of chromium by weight.

5. The alloy for manufacturing a golf club head according to claim 1, wherein: The invention comprises 13.75-14.25% of chromium, 3.2-3.5% of nickel and 1.1-1.3% of silicon in weight percentage.

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