JP2009167518A - Titanium-aluminum alloy applied to golf club head - Google Patents

Titanium-aluminum alloy applied to golf club head Download PDF

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JP2009167518A
JP2009167518A JP2008080195A JP2008080195A JP2009167518A JP 2009167518 A JP2009167518 A JP 2009167518A JP 2008080195 A JP2008080195 A JP 2008080195A JP 2008080195 A JP2008080195 A JP 2008080195A JP 2009167518 A JP2009167518 A JP 2009167518A
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titanium
club head
golf club
aluminum alloy
alloy
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Liang-Ho Tsai
蔡良和
Cheng-Tao Lee
李政道
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MEIAN KOKUSAI GIGYO KOFUN YUGE
Advanced International Multitech Co Ltd
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MEIAN KOKUSAI GIGYO KOFUN YUGE
Advanced International Multitech Co Ltd
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a titanium-aluminum alloy with high plasticity and high extensibility, so that an elastic deformation capability of a golf club head is adjusted. <P>SOLUTION: Provided is the titanium-aluminum alloy applied to a golf club head, which contains 88-92 wt.% titanium and 7.5-10 wt.% aluminum, and has an elongation of 8-16%. Minor elements such as niobium, vanadium, molybdenum, chromium, iron, silicon, oxygen, and nitrogen may be selectively added into the titanium-aluminum alloy, so as to form a high extensibility material with a tensile strength of 650-950 Mpa. The gold club head which is formed by using the high extensibility material, for a main body of the gold club head, and combining it with a phase of 6Al-4V-Ti titanium alloy or β alloy of which the rigidity is comparatively excellent, can achieve a golf club head product with good hitting sense, excellent in damping capability, and ball controlling capability, and capable of customizing by adjusting a neck angle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ゴルフクラブヘッドに応用する高延伸材料に関し、特にチタン、アルミニウムを重量％の比率で配合し、ニオブ、バナジウム、モリブデン、クロム、鉄、ケイ素、酸素および／または窒素などの微量元素を添加することにより高延伸性を有するゴルフクラブヘッド合金材料に関する。   The present invention relates to a highly stretched material applied to a golf club head, and in particular, titanium and aluminum are blended in a ratio by weight, and trace elements such as niobium, vanadium, molybdenum, chromium, iron, silicon, oxygen and / or nitrogen are added. The present invention relates to a golf club head alloy material having high stretchability when added.

現在、開発されているゴルフクラブヘッドに応用する合金の技術は、主にチタン合金材料であり、特許文献１で開示された公知の６Ａｌ−４Ｖ−Ｔｉチタン合金（すなわち、重量％がアルミニウムおよびバナジウムであり、残部をチタン金属とする）のように、その成分は５．５〜６．７５重量％のＡｌ、３．５〜４．５重量％のバナジウム、最大値を０．３重量％とする鉄、および最大値を０．２重量％とする酸素を含み、その密度は約４．４３〜０．３ｇ／ｃｍである。６Ａｌ−４Ｖ−Ｔｉチタン合金で製造されたゴルフクラブヘッドは、初期のステンレス鋼材料製のクラブヘッドに比べ、弾性変形力が大きく上回り、同じ強度を有し、密度が更に低いといった特性を有しているため、ゴルフクラブヘッドの重量を増やさない前提の下で、ゴルフクラブヘッドの体積を増やし、その最適打球点の面積を相対的に増加させることができ、打球成功率を高めることができる。また、ステンレス鋼を上回る弾性変形力によって、打球時に比較的大きな弾性変形の能力を提供することができ、比較的大きな弾性変形の程度−伸び率を生成することができ、ボールがフェースにぶつかるときにもたらされる球体の圧縮変形を相対的に減少させ、打球応力が減衰によって吸収される程度を低減し、打球応力のエネルギー損失を防止し、打球距離をさらに向上させることができる。
米国特許第２００６／００４５７８９号 The alloy technology applied to the golf club head currently being developed is mainly a titanium alloy material, and the known 6Al-4V-Ti titanium alloy disclosed in Patent Document 1 (that is, aluminum and vanadium in which the weight percentage is aluminum and vanadium). And the balance is 5.5 to 6.75% by weight of Al, 3.5 to 4.5% by weight of vanadium, and the maximum value is 0.3% by weight. And oxygen with a maximum value of 0.2% by weight, the density of which is about 4.43 to 0.3 g / cm. Golf club heads made of 6Al-4V-Ti titanium alloy have the characteristics that the elastic deformation force is much higher, the same strength, and the density is lower than club heads made of early stainless steel materials. Therefore, on the premise that the weight of the golf club head is not increased, the volume of the golf club head can be increased, the area of the optimum hitting point can be relatively increased, and the hitting success rate can be increased. Also, the elastic deformation force that exceeds that of stainless steel can provide a relatively large elastic deformation ability at the time of hitting, can generate a relatively large degree of elastic deformation-elongation, and when the ball hits the face It is possible to relatively reduce the compression deformation of the sphere caused by the above, reduce the degree to which the hitting stress is absorbed by the damping, prevent the energy loss of the hitting stress, and further improve the hitting distance.
US 2006/0045789

しかし、目下、ゴルフクラブヘッドの体積の大型化および多様化したカスタム化の要求の下、低密度、高展延性の製品を開発しつつ、本来の機械強度を保ち、設計の許容度を高める必要がある。   However, it is currently necessary to develop a low-density, high-extensibility product while maintaining the original mechanical strength and increasing design tolerances in response to the demand for larger and diversified customization of golf club heads. There is.

前記需要に鑑み、本発明が解決しようとする課題は、塑性が高く、展延性が高いチタン−アルミニウム合金を提供し、ゴルフクラブヘッドの弾性変形の能力を調整することである。本発明の解決しようとするもう１つの課題は、展延性が高いチタン−アルミニウム合金を提供し、微量の改質元素の特性を利用して、チタン−アルミニウム合金を改質し微調整できるようにすることである。   In view of the above demand, the problem to be solved by the present invention is to provide a titanium-aluminum alloy having high plasticity and high spreadability, and adjusting the elastic deformation ability of the golf club head. Another problem to be solved by the present invention is to provide a titanium-aluminum alloy having a high spreadability and to modify and fine-tune the titanium-aluminum alloy by utilizing the characteristics of a small amount of the modifying element. It is to be.

前記課題を解決するため、本発明で開示する技術手段は、重量％でチタン８８〜９２％、アルミニウム７．５〜１０％を含み、延伸率を８％〜１６％とするチタン−アルミニウム合金を提供することである。   In order to solve the above-mentioned problem, the technical means disclosed in the present invention is a titanium-aluminum alloy containing 88 to 92% titanium and 7.5 to 10% aluminum by weight% and having a draw ratio of 8 to 16%. Is to provide.

前記のチタン−アルミニウム合金は、密度範囲を４．４０ｇ／ｃｍ3以下とし、引張強度を６８０〜９５０Ｍｐａとするチタン合金であり、鋳造、鍛造または機械加工により成形する。 The titanium-aluminum alloy is a titanium alloy having a density range of 4.40 g / cm 3 or less and a tensile strength of 680 to 950 Mpa, and is formed by casting, forging, or machining.

本発明で開示するもう１つの技術手段は、重量％でチタン８８％〜９２％、アルミニウム７．５％〜１０％、ニオブ≦２％、バナジウム≦２％、モリブデン≦２％、クロム≦２％、鉄≦１％、ケイ素≦１％、酸素≦０．３％および窒素≦０．０５％を含み、その組成の延伸率を８％〜１６％とし、密度範囲を４．４０ｇ／ｃｍ3以上とするチタン−アルミニウム合金を提供することである。 Another technical means disclosed in the present invention is by weight percent titanium 88% -92%, aluminum 7.5% -10%, niobium ≦ 2%, vanadium ≦ 2%, molybdenum ≦ 2%, chromium ≦ 2%. Iron ≦ 1%, silicon ≦ 1%, oxygen ≦ 0.3% and nitrogen ≦ 0.05%, the stretch ratio of the composition is 8% to 16%, and the density range is 4.40 g / cm 3 or more. And providing a titanium-aluminum alloy.

本発明のチタン−アルミニウム合金におけるチタンおよびアルミニウムの含有量は、公知の６Ａｌ−４Ｖ−Ｔｉよりも高く、アルミニウム含有量を高めることは、合金の常温および高温強度を高め、比重を下げ、弾性係数を増加することに対し、顕著な効果がある。ニオブ、バナジウム、モリブデン、クロム、鉄は、β安定化元素であり、６Ａｌ−４Ｖ−Ｔｉに比べ、バナジウムの添加量を大幅に減少させることにより、チタン−アルミニウム合金の製造コストを下げることができる。また、本発明は、良好な熱加工成形性を有し、工場で量産しやすく、かつその密度も同類の合金より低いため、ゴルフクラブヘッドの大型化に有利であり、その設計の許容度を高めることができる。   The titanium and aluminum contents in the titanium-aluminum alloy of the present invention are higher than the known 6Al-4V-Ti. Increasing the aluminum content increases the normal temperature and high temperature strength of the alloy, decreases the specific gravity, and elastic modulus. There is a significant effect on increasing. Niobium, vanadium, molybdenum, chromium, and iron are β-stabilizing elements, and the manufacturing cost of the titanium-aluminum alloy can be reduced by significantly reducing the amount of vanadium added compared to 6Al-4V-Ti. . In addition, the present invention is advantageous in increasing the size of a golf club head because it has good thermoformability, is easily mass-produced in a factory, and its density is lower than that of a similar alloy. Can be increased.

次に、図面と合わせ、本発明の比較的優れた実施例について説明する。   Next, a comparatively excellent embodiment of the present invention will be described with reference to the drawings.

図１、図２および図３のように、本発明の第１実施例のチタン−アルミニウム合金の合金元素は、重量％でチタン８８％〜９２％およびアルミニウム７．５％〜１０％を含み、その組成の延伸率は８％〜１６％であり、密度範囲は約４．４０ｇ／ｃｍ3以下である。 As shown in FIGS. 1, 2 and 3, the alloy elements of the titanium-aluminum alloy according to the first embodiment of the present invention include 88% to 92% titanium and 7.5% to 10% aluminum by weight. The stretch ratio of the composition is 8% to 16%, and the density range is about 4.40 g / cm 3 or less.

本発明はまた、ニオブ、バナジウム、モリブデン、クロム、鉄、ケイ素、酸素および窒素などの元素からなる群より選択される微量の改質元素を添加することにより、その特性を調整することができる。例えば、微量のニオブを添加することにより、その延伸特性は下げずに、合金の強度を高めることができる。バナジウムの添加量を相対的に下げることにより、本来の合金の機械的性質には影響を及ぼさずに、鋳造時の流動性および補助脱気効果を高めることができる。微量のモリブデンを添加することにより、均一に分布した炭化物を合金に析出させ、耐熱性を高め、合金の溶接熱亀裂現象を減少させることができ、合金の硬化能力および高温強度を増加させることもできる。適量のクロムを添加することにより、合金の防錆耐食性を高め、ゴルフクラブヘッドの使用寿命を増加させることができる。微量の鉄を添加することにより、良好な塑性をもたせ、加工処理をしやすくすることができる。微量のケイ素を添加することにより、溶融金属の流動性を改善することができる。本発明において選択する添加改質元素のうち、その含有量の比率は、ニオブ≦２％、バナジウム≦２％、モリブデン≦２％、クロム≦２％、鉄≦１％、ケイ素≦１％、酸素≦０．３％および窒素≦０．０５％とし、延伸率は８％〜１６％であり、かつその密度は約４．４０ｇ／ｃｍ3以上である。 The present invention can also adjust the characteristics by adding a trace amount of a modifying element selected from the group consisting of elements such as niobium, vanadium, molybdenum, chromium, iron, silicon, oxygen and nitrogen. For example, by adding a small amount of niobium, the strength of the alloy can be increased without lowering its drawing characteristics. By relatively reducing the amount of vanadium added, the fluidity and auxiliary degassing effect during casting can be enhanced without affecting the mechanical properties of the original alloy. By adding a small amount of molybdenum, uniformly distributed carbides can be precipitated in the alloy, heat resistance can be improved, weld thermal cracking phenomenon of the alloy can be reduced, and the hardening ability and high temperature strength of the alloy can be increased. it can. By adding an appropriate amount of chromium, the rust and corrosion resistance of the alloy can be increased and the service life of the golf club head can be increased. By adding a small amount of iron, it is possible to give good plasticity and facilitate processing. By adding a small amount of silicon, the fluidity of the molten metal can be improved. Among the additive modifying elements selected in the present invention, the content ratios are niobium ≦ 2%, vanadium ≦ 2%, molybdenum ≦ 2%, chromium ≦ 2%, iron ≦ 1%, silicon ≦ 1%, oxygen ≦ 0.3% and nitrogen ≦ 0.05%, the stretch ratio is 8% to 16%, and the density is about 4.40 g / cm 3 or more.

本発明の比較的優れた第１実施例から第４実施例並びに公知の６Ａｌ−４Ｖ−Ｔｉチタン合金の特性の比較は、次の表１のとおりである。   Table 1 below shows a comparison of the characteristics of the comparatively excellent first to fourth embodiments of the present invention and known 6Al-4V-Ti titanium alloys.

公知の６Ａｌ４Ｖ−Ｔｉ合金に比べ、本発明は、アルミニウム元素の含有量を相対的に高め、バナジウム元素の含有量を下げることにより、合金密度を下げ、その靭性を増加させ、低密度の特性を保ちながら、優れた展延性、塑性を得ることができる。   Compared with the known 6Al4V-Ti alloy, the present invention has a relatively high aluminum element content and a low vanadium element content, thereby lowering the alloy density, increasing its toughness, and reducing the low density characteristics. While maintaining, excellent spreadability and plasticity can be obtained.

本発明の実施例と公知のチタン合金の元素組成の比較表は、次の表２のとおりである。   A comparison table of elemental compositions of the examples of the present invention and known titanium alloys is shown in Table 2 below.

前記実施例の合金材料は、チタン−アルミニウム合金を主要合金とし、延伸率を８〜１６％（８％以上）とし、引張強度を６８０〜９５０（６８０Ｍｐａ以上）とするチタン合金であり、鋳造、鍛造、機械加工により成形する。   The alloy material of the example is a titanium alloy having a titanium-aluminum alloy as a main alloy, a stretching ratio of 8 to 16% (8% or more), and a tensile strength of 680 to 950 (680 Mpa or more), casting, Formed by forging and machining.

本発明は、展延性が比較的高く、ゴルフクラブヘッドの本体とするのに適しており、別途、剛性の比較的優れた材料をフェースとする。その材料組成は、６Ａｌ−４Ｖ−Ｔｉチタン合金、βチタン合金などとし、鋳造、鍛造、機械加工により成形することができる。本発明の展延性が高い本体を強度が高いフェース材料と組み合わせ、本体内部における構造設計をウェイトバランス構造とリブ設計で補うことにより、打感がよく（制振性がよく）、制球性がよく、かつネック角を調整してカスタム化することが可能なゴルフクラブヘッド製品を達成することができる。本発明の８Ａｌ−Ｔｉと公知の６Ａｌ−４Ｖ−Ｔｉの加工性能の比較表は表３のとおりである。   The present invention has a relatively high spreadability and is suitable for use as a main body of a golf club head, and separately uses a material having relatively high rigidity as a face. The material composition is 6Al-4V-Ti titanium alloy, β titanium alloy, or the like, which can be formed by casting, forging, or machining. By combining the highly malleable body of the present invention with a face material with high strength and supplementing the structure design inside the body with a weight balance structure and rib design, the feel is good (good vibration control) and ball control is good. In addition, a golf club head product that can be customized by adjusting the neck angle can be achieved. Table 3 shows a comparison table of processing performance between 8Al-Ti of the present invention and known 6Al-4V-Ti.

また、本発明は、８Ａｌ−Ｔｉ材料を実施例としてゴルフクラブヘッド本体を製造してから、ＳＰ７００高強度チタン合金をフェースとして溶接し、発射装置専用ゴルフボール（ボールの仕様は９０）を、５５．８ｍ／ｓの発射速度にて、３０００発を発射して試験し、フェースとヘッド本体を目視検査し、探傷検査した結果、割れおよびひびがなかった。   Further, in the present invention, after manufacturing a golf club head body using 8Al-Ti material as an example, SP700 high strength titanium alloy is welded as a face, and a golf ball dedicated to a launcher (ball specification is 90), 55 At 3000 m / s, 3000 shots were fired and tested, and the face and head body were visually inspected and flaw detected.

前記のとおり、本発明のチタン−アルミニウム合金は、産業上の利用可能性、新規性および進歩性を有し、発明特許要件に適合する。但し、以上の内容は、本発明の比較的優れた実施例でしかなく、本発明の実施範囲を限定するためのものではない。本発明の特許請求の範囲に従って行なわれた同等の変更および修飾は、いずれも本発明の特許範囲に含まれるものである。   As mentioned above, the titanium-aluminum alloy of the present invention has industrial applicability, novelty and inventive step and meets the invention patent requirements. However, the above content is only a comparatively excellent example of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications made in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

本発明のゴルフクラブヘッドに応用するチタン−アルミニウム合金の実施例の５０倍拡大金相図である。It is a 50-times enlarged gold phase diagram of the Example of the titanium-aluminum alloy applied to the golf club head of this invention. 本発明のゴルフクラブヘッドに応用するチタン−アルミニウム合金の実施例の１００倍拡大金相図である。It is a 100 times expansion metal phase diagram of the Example of the titanium-aluminum alloy applied to the golf club head of this invention. 本発明のゴルフクラブヘッドに応用するチタン−アルミニウム合金の実施例の２００倍拡大金相図である。It is a 200 times magnified gold phase diagram of the Example of the titanium-aluminum alloy applied to the golf club head of this invention.

Claims (10)

重量％でチタン８８％〜９２％、およびアルミニウム７．５％〜１０％を含み、その組成の延伸率を８％〜１６％とするゴルフクラブヘッドに応用するチタン−アルミニウム合金。   A titanium-aluminum alloy applied to a golf club head containing 88% to 92% titanium by weight and 7.5% to 10% aluminum and having a composition with a stretch ratio of 8% to 16%. 前記チタン−アルミニウム合金は、ニオブ、バナジウム、モリブデン、クロム、鉄、ケイ素、酸素および窒素からなる群より選択される改質元素をさらに含む請求項１に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   2. The titanium-aluminum applied to the golf club head according to claim 1, wherein the titanium-aluminum alloy further includes a modifying element selected from the group consisting of niobium, vanadium, molybdenum, chromium, iron, silicon, oxygen, and nitrogen. alloy. 前記改質元素がニオブ２％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 2% or less of niobium. 前記改質元素がバナジウム２％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 2% or less of vanadium. 前記改質元素がモリブデン２％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 2% or less of molybdenum. 前記改質元素が鉄１％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 1% or less of iron. 前記改質元素がケイ素１％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 1% or less of silicon. 前記改質元素が酸素０．３％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 0.3% or less of oxygen. 前記改質元素が窒素０．０５％以下を含む請求項２に記載のゴルフクラブヘッドに応用するチタン−アルミニウム合金。   The titanium-aluminum alloy applied to the golf club head according to claim 2, wherein the modifying element contains 0.05% or less of nitrogen. 重量％でチタン８８％〜９２％、アルミニウム７．５％〜１０％、ニオブ≦２％、バナジウム≦２％、モリブデン≦２％、クロム≦２％、鉄≦１％、ケイ素≦１％、酸素≦０．３％および窒素≦０．０５％を含み、その組成の延伸率を８％〜１６％とするゴルフクラブヘッドに応用するチタン−アルミニウム合金。   Titanium 88% -92%, aluminum 7.5% -10%, niobium ≦ 2%, vanadium ≦ 2%, molybdenum ≦ 2%, chromium ≦ 2%, iron ≦ 1%, silicon ≦ 1% by weight% A titanium-aluminum alloy that is applied to a golf club head containing ≦ 0.3% and nitrogen ≦ 0.05%, and having a stretch ratio of 8% to 16%.
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