JP4669444B2 - Golf club head alloy - Google Patents
Golf club head alloy Download PDFInfo
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- JP4669444B2 JP4669444B2 JP2006162653A JP2006162653A JP4669444B2 JP 4669444 B2 JP4669444 B2 JP 4669444B2 JP 2006162653 A JP2006162653 A JP 2006162653A JP 2006162653 A JP2006162653 A JP 2006162653A JP 4669444 B2 JP4669444 B2 JP 4669444B2
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- 229910045601 alloy Inorganic materials 0.000 title claims description 41
- 239000000956 alloy Substances 0.000 title claims description 41
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 20
- 229910052721 tungsten Inorganic materials 0.000 claims description 20
- 239000010937 tungsten Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 230000005484 gravity Effects 0.000 claims description 17
- 239000011651 chromium Substances 0.000 claims description 15
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 14
- 229910052804 chromium Inorganic materials 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 6
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 14
- 229910000859 α-Fe Inorganic materials 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 230000035882 stress Effects 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000010963 304 stainless steel Substances 0.000 description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000929 Ru alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Description
本発明は、ゴルフクラブヘッドの合金に関するもので、特に高強度、高硬度と重りの功能を有するゴルフクラブヘッドの合金に係るものである。 The present invention relates to a golf club head alloy, and more particularly to a golf club head alloy having high strength, high hardness, and weight.
従来のゴルフクラブヘッドの合金としては、通常としてＡＳＴＭ３０４規格のステンレス鋼の合金を鋳材とする。しかし、上記材質はＡＳＴＭ３０４規格のステンレス鋼そのものの合金性質を受けることにより、鋳造により製造されるヘッド本体とフェース板は約５．３０８９７×１０8 Ｐａ（約７７ksi）の引張強度と約２．５５１０６×１０8 Ｐａ（約３７ksi）の降伏強度しか達することができないため、その応力の受ける能力はやや不足になる。このように、フェース板に十分な応力の受ける能力を有し、そして永久な塑性変形を生じないように確保するべく、鋳造の製造工程においてフェース板は少なくとも３．３mmより大きくなるような安全な肉厚を有するように設計しなければならない。しかし、厚過ぎるフェース板ではゴルフクラブヘッドの全体の重量を相対的に高めるだけではなく、ゴルフクラブヘッドの全体の重心の位置を調整するのに不利になると共に、比較的薄い周壁部を有する超大型のゴルフクラブヘッドの製造には不適である。また、上記材質の硬度はＨＲＢ８０から９０しか達していないため、ヘッド本体の耐摩損性が相対的に減ってしまう。その他に、上記材質の比重は７．８２しか達していないため、ゴルフクラブヘッドに重量調整の功能を提供することができないなどの問題点があった。 As an alloy of a conventional golf club head, an ASTM 304 standard stainless steel alloy is usually used as a casting material. However, since the above material is subjected to the alloy properties of ASTM 304 standard stainless steel itself, the head body and the face plate manufactured by casting have a tensile strength of about 5.30897 × 10 8 Pa (about 77 ksi) and about 2.55106. Since only a yield strength of × 10 8 Pa (about 37 ksi) can be reached, the ability to receive the stress is somewhat insufficient. Thus, in order to ensure that the face plate is capable of undergoing sufficient stress and that permanent plastic deformation does not occur, the face plate must be at least as safe as 3.3 mm in the casting manufacturing process. It must be designed to have a wall thickness. However, a face plate that is too thick not only increases the overall weight of the golf club head, but is also disadvantageous for adjusting the position of the overall center of gravity of the golf club head, and has a relatively thin peripheral wall. It is not suitable for manufacturing a large golf club head. Further, since the hardness of the above material reaches only 90 from HRB 80, the wear resistance of the head body is relatively reduced. In addition, since the specific gravity of the above material has reached only 7.82, there is a problem that it is not possible to provide the golf club head with the ability to adjust the weight.
このように、もしステンレス鋼合金そのものの引張強度、硬度と比重などの機械性質を相対的に高めることができるならば、同時に応力の受ける能力を高め、耐摩損性を増やし、さらに重心配置の功能を提供することができるという利点を有することになる。このように、上記のような従来のゴルフクラブヘッドの合金をさらに改良しなければならない。 Thus, if the mechanical properties such as tensile strength, hardness and specific gravity of the stainless steel alloy itself can be relatively enhanced, the ability to receive stress at the same time is increased, the wear resistance is increased, and the center of gravity arrangement is further improved. Will have the advantage that it can be provided. Thus, the conventional golf club head alloys as described above must be further improved.
本発明はこのような問題点に鑑みて発明したものであって、その目的とするところは、合金の成分に特定比率の高比重の成分を加え、さらに上記合金成分中の炭素、シリコン、マンガン、ニッケル、クロム、タングステン、残部鉄および不可避不純物からなる合金であって、上記合金の比重は８から８．５であり、質量百分率を適当に調整することにより、応力を受ける能力と耐摩損性を相対的に高めると同時に、ゴルフクラブヘッドの重心配置の功能を提供することができるゴルフクラブヘッドの合金を提供することにある。 The present invention has been invented in view of such problems. The object of the present invention is to add a high specific gravity component at a specific ratio to the alloy components, and to further add carbon, silicon, manganese in the alloy components. , nickel, chromium, tungsten, a balance of iron and inevitable impurities Tona Ru alloy, the specific gravity of the alloy is 8.5 to 8, by suitably adjusting the mass percentage, the ability to undergo stress and wear loss An object of the present invention is to provide an alloy of a golf club head capable of providing the function of positioning the center of gravity of the golf club head while at the same time relatively improving the properties.
本発明の第一の目的は、ステンレス鋼合金の成分に特定比率のタングステンの成分を加えることにより、機械性質を相対的に高めると共に、重心配置の功能を提供することができるゴルフクラブヘッドの合金を提供しようとするものである。 A first object of the present invention is to add a specific proportion of tungsten component to the stainless steel alloy component, so that the mechanical properties can be relatively improved and the center of gravity arrangement can be provided. Is to provide.
本発明の第二の目的は、ステンレス鋼合金の成分に特定比率のタングステンの成分を加えることにより、溶接の熱亀裂の敏感性と異種溶接の互換性を相対的に高めることができるゴルフクラブヘッドの合金を提供しようとするものである。 The second object of the present invention is to add a specific proportion of tungsten component to the stainless steel alloy component, thereby making it possible to relatively increase the thermal crack sensitivity of welding and the compatibility of dissimilar welding. It is intended to provide an alloy.
本発明の第三の目的は、ステンレス鋼合金の成分に特定比率のニッケルとクロムの成分を加えることにより、耐蝕性を相対的に高めることができるゴルフクラブヘッドの合金を提供しようとするものである。 The third object of the present invention is to provide an alloy of a golf club head capable of relatively improving the corrosion resistance by adding a specific ratio of nickel and chromium to the components of the stainless steel alloy. is there.
上記目的を達成するために、本発明によるゴルフクラブヘッドの合金は、質量百分率が０．０８％以下の炭素、０．５％から２．０％のシリコン、０．５％から２．０％のマンガン、５．０％から１５．０％のニッケル、１５．０％から３０．０％のクロム、１１．０％から１５．０％のタングステン、残部鉄および不可避不純物からなる合金であって、上記合金の比重は８から８．５である。 In order to achieve the above object, the golf club head alloy according to the present invention has a mass percentage of carbon of 0.08% or less, 0.5% to 2.0% silicon, 0.5% to 2.0%. An alloy of 5.0% to 15.0% nickel, 15.0% to 30.0% chromium, 11.0 % to 15.0% tungsten, the balance iron and inevitable impurities The specific gravity of the alloy is 8 to 8.5.
本発明によるゴルフクラブヘッドの合金は、他に０．０４％以下の燐を含むこともできる。また、他に０．０４％以下の硫黄を含むこともできる。また、他に１．０％以下のモリブデンを含むこともできる。また、他に１．０％以下の銅を含むこともできる。 Other golf club head alloys according to the present invention include 0 . It can also contain up to 04% phosphorus. In addition, 0 . It can also contain up to 04% sulfur. In addition, it may contain 1.0% or less of molybdenum. It is also possible to include other 1.0% or less of copper.
本発明のゴルフクラブヘッドの合金によれば、ステンレス鋼合金の成分に特定比率のタングステンの成分を加えることにより、機械性質を相対的に高めると共に、重心配置の功能を提供することができるという利点がある。 According to the golf club head alloy of the present invention, by adding a specific proportion of tungsten component to the stainless steel alloy component, the mechanical properties can be relatively enhanced and the merit of center of gravity arrangement can be provided. There is.
本発明のゴルフクラブヘッドの合金によれば、ステンレス鋼合金の成分に特定比率のタングステンの成分を加えることにより、溶接の熱亀裂の敏感性と異種溶接の互換性を相対的に高めることができるという利点がある。 According to the golf club head alloy of the present invention, by adding a specific proportion of tungsten component to the stainless steel alloy component, it is possible to relatively increase the thermal crack sensitivity of welding and the compatibility of dissimilar welding. There is an advantage.
本発明のゴルフクラブヘッドの合金によれば、ステンレス鋼合金の成分に特定比率のニッケルとクロムの成分を加えることにより、耐蝕性を相対的に高めることができるという利点がある。 According to the golf club head alloy of the present invention, there is an advantage that the corrosion resistance can be relatively increased by adding a specific ratio of nickel and chromium to the stainless steel alloy.
本発明の実施の形態について、以下、図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
表１を参照すると、本発明の実施例のゴルフクラブヘッドの合金は、ステンレス鋼の成分の内に特定比率のタングステン（Ｗ）の成分を加え、さらに上記ステンレス鋼合金の成分中の各成分の比率を適当に調整し、例えば炭素（Ｃ）、シリコン（Ｓｉ）、マンガン（Ｍｎ）、ニッケル（Ｎｉ）、クロム（Ｃｒ）、タングステン（Ｗ）、残部鉄（Ｆｅ）および不可避不純物の成分の比率を適当に調整する。このように、本発明の実施例のゴルフクラブヘッドの合金の組成の比率（質量百分率ｗｔ％で計算）は下記の条件を符合し、すなわち０．０８％以下の炭素、０．５％から２．０％のシリコン、０．５％から２．０％のマンガン、５．０％から１５．０％のニッケル、１５．０％から３０．０％のクロムと５．０％から１５．０％のタングステン、残部鉄および不可避不純物である。また、本発明における比較的よい組成の比率は、０．０８％以下の炭素、０．５％から１．５％のシリコン、０．５％から１．５％のマンガン、８．０％から１２．０％のニッケル、１５．０％から３０．０％のクロムと８．０％から１２．０％のタングステンン、残部鉄および不可避不純物である。そして、その比重は８から８．５である。 Referring to Table 1, in the golf club head alloy of the embodiment of the present invention, a specific proportion of tungsten (W) is added to the stainless steel components, and each of the components in the stainless steel alloy components is added. Adjust the ratio appropriately, for example, ratio of carbon (C), silicon (Si), manganese (Mn), nickel (Ni), chromium (Cr), tungsten (W), balance iron (Fe) and inevitable impurities Adjust appropriately. Thus, the composition ratio (calculated in terms of mass percentage wt%) of the golf club head alloy of the embodiment of the present invention meets the following conditions, that is, 0.08% or less of carbon, 0.5% to 2 0.0% silicon, 0.5% to 2.0% manganese, 5.0% to 15.0% nickel, 15.0% to 30.0% chromium and 5.0% to 15.0 % of tungsten down, the balance iron and inevitable impurities. Also, the relatively good composition ratio in the present invention is 0.08% or less of carbon, 0.5% to 1.5% silicon, 0.5% to 1.5% manganese, and 8.0%. 12.0% nickel, 15.0% to 30.0% chromium and 8.0% to 12.0% tungsten , balance iron and inevitable impurities . And the specific gravity is 8 to 8.5.
本発明のゴルフクラブヘッドの製造方法は、特開２００５−２１６１８号「ゴルフクラブヘッドの重り」、特開２００５−２３４１４号「ゴルフクラブヘッドの重り」または特開２００５−３６２８０号「ゴルフクラブヘッドの鍛造合金」などの特許出願に掲示される合金の製造方法とは相似しているため、その製造工程および条件の相似する部分についてはここでは再び叙述しない。 The method of manufacturing the golf club head of the present invention is disclosed in Japanese Patent Application Laid-Open No. 2005-21618 “Golf Club Head Weight”, Japanese Patent Application Laid-Open No. 2005-23414 “Golf Club Head Weight” or Japanese Patent Application Laid-Open No. 2005-36280 “Golf Club Head Since it is similar to a method for producing an alloy such as “forged alloy” published in patent applications, the similar parts of the production process and conditions are not described here again.
本発明のゴルフクラブヘッドの製造方法には下記の段階が含まれる。純鉄、フェロシリコン、フェロマンガン、フェロクロム、ニッケルとタングステンを高温溶炉（例えば高周波炉）の中に加えることにより、溶融の合金に混合する。上記原料を加えることにより溶融の合金の炭素、シリコン、マンガン、ニッケル、クロムとタングステンの質量百分率を調整し、さらに適当にサンプリングを行うことにより、その質量百分率がそれぞれ０．０８％以下、０．５％から２．０、０．５％から２．０％、５．０％から１５．０％、１５．０％から３０．０％、５．０％から１５．０％、残部鉄および不可避不純物あることを維持するように測定および制御する。上記溶融合金を精密鋳造の型の型穴の内に注入することにより、予備形状のゴルフクラブヘッドまたはフェース板を製造する。その他に、棒材として成形することにより、後続の鍛造の製造工程において鍛造を行うこともできる。写真１に示すように、本発明のゴルフクラブヘッドの合金で製造し得るステンレス鋼の基地は主にオーステナイト相（Austenite）に形成され、さらにタングステンの成分により上記基地中は二次相のフェライト相（Ferrite）の金相に形成される。 The golf club head manufacturing method of the present invention includes the following steps. Pure iron, ferrosilicon, ferromanganese, ferrochrome, nickel and tungsten are added to a high temperature furnace (eg, a high frequency furnace) to mix with the molten alloy. By adding the above raw materials, the mass percentage of carbon, silicon, manganese, nickel, chromium and tungsten of the molten alloy is adjusted, and further, by sampling appropriately, the mass percentage is 0.08% or less, 0.0. 5% to 2.0, 0.5% to 2.0%, 5.0% to 15.0%, 15.0% to 30.0%, 5.0% to 15.0%, balance iron and measuring and controlled to maintain a walk inevitable impurities. By injecting the molten alloy into the mold cavity of a precision casting mold, a pre-shaped golf club head or face plate is manufactured. In addition, by forging as a bar, forging can be performed in the subsequent forging manufacturing process. As shown in Photo 1, the stainless steel matrix that can be produced with the golf club head alloy of the present invention is mainly formed in the austenite phase, and further, the secondary ferrite phase in the matrix due to the tungsten component. Formed in (Ferrite) gold phase.
また、本発明の上記冶金の製造工程において使用される原料は他に純鉄、各元素（例えば炭素、シリコン、マンガン、クロム、ニッケルとタングステン）の純金属（僅か極少の添加物が含まれる）またはその鉄合金（Ferroalloy）から選択することができる。冶金時において、本発明においては純鉄、純金属または鉄合金の実質的に含まれる元素の組成に基づいてその個別の用量を適当に調整することにより、製造し得た合金は上記予定の比率に符合することができるため、ゴルフクラブヘッドの合金を製造することができる。その他に、上記ステンレス鋼の合金には製造工程と原料の差異に基づいて他に選択的に部分的かつ微量な添加物が含まれ、例えばモリブデン、銅、燐と硫黄などが含まれる。 In addition, the raw materials used in the metallurgical manufacturing process of the present invention are pure iron, pure metals of each element (for example, carbon, silicon, manganese, chromium, nickel and tungsten) (including a slight amount of additives). Alternatively, it can be selected from its ferroalloy. At the time of metallurgy, in the present invention, by adjusting the individual dose appropriately based on the composition of elements substantially contained in pure iron, pure metal or iron alloy, the produced alloy has the above-mentioned ratio. Therefore, a golf club head alloy can be manufactured. In addition to the above, the alloy of stainless steel includes other selective and trace amounts of additives based on the difference between the manufacturing process and the raw material, for example, molybdenum, copper, phosphorus and sulfur.
表２を参照すると、本発明のゴルフクラブヘッドの合金と従来のＡＳＴＭ ３０４ステンレス鋼合金との引張強度、降伏強度および伸長率などの機械性質の対照表（引張強度は最大な応力を受けられる値で、降伏強度は弾性変形と永久変形との臨界点である）が掲示される。 Referring to Table 2, a comparison table of mechanical properties such as tensile strength, yield strength and elongation between the golf club head alloy of the present invention and a conventional ASTM 304 stainless steel alloy (the tensile strength is a value at which a maximum stress can be applied). Yield strength is the critical point between elastic deformation and permanent deformation).
表３を参照すると、本発明のゴルフクラブヘッドの合金と従来のＡＳＴＭ ３０４ステンレス鋼合金との硬度、嵌入性および耐蝕性などの応用特性の比較が掲示される。 Referring to Table 3, a comparison of application properties such as hardness, fit and corrosion resistance between the golf club head alloy of the present invention and a conventional ASTM 304 stainless steel alloy is posted.
再び表１を参照すると、従来のＡＳＴＭ ３０４規格のステンレス鋼合金の合金組成物の成分と比較すると、本発明のステンレス鋼合金にはタングステンの成分（５．０％から１５．０％）と微量な添加物（１％以下のモリブデンと１％以下の銅）が含まれる。表１、２、３と写真１を比較して知ることができるように、本発明における炭素、シリコン、マンガン、クロム、燐、硫黄、ニッケル、タングステンとその他の金属成分の作用と利点は下記のとおりである。 Referring back to Table 1, the stainless steel alloy of the present invention has a tungsten component (5.0% to 15.0%) and a trace amount as compared with the components of the conventional ASTM 304 stainless steel alloy composition. Additive (1% or less molybdenum and 1% or less copper). As can be seen by comparing Tables 1, 2, 3 and Photo 1, the effects and advantages of carbon, silicon, manganese, chromium, phosphorus, sulfur, nickel, tungsten and other metal components in the present invention are as follows. It is as follows.
ａ）本発明の炭素の成分の比率は０．０８％以下で、例えば選択的に０．０７％、０．０６％、０．０５％または０．０４％などである。このように、硬度と引張強度を増やすことができる。 a) The proportion of the carbon component of the present invention is 0.08% or less, for example, 0.07%, 0.06%, 0.05% or 0.04%, for example. Thus, hardness and tensile strength can be increased.
ｂ）本発明のシリコンの成分の比率は０．５％から２．０％の間にあり、例えば選択的に０．７％、０．９％、１．１％、１．４％または１．７％などである。このように、溶融時の注入の流動性を増やすと共に、時効過程においてフェライト相から炭素化物を析出するのに役立つことができ、さらに鋳物の引張強度を６．２０５２８×１０8 Ｐａ（９０ksi）から７．５８４２４×１０8 Ｐａ（１１０ksi）の間（表２に示すように）まで高めることができるため、フェース板の応力の受ける能力を相対的に増やし、さらにフェース板の肉厚の需要性を相対的に薄く抑えることができる。このように、フェース板の肉厚が薄くなることで節約される重量は全体のゴルフクラブヘッドのその他の部位に配置することができるため、ゴルフクラブヘッドの全体の重心位置を低く調整することができる。また、本発明をヘッド本体に応用される時、本発明は従来のステンレス鋼より比較的高い比重を有するため、ヘッド本体の慣性モーメントを高めることができ、さらにゴルフクラブヘッドの打球の性能を相対的に増やすことができる。 b) The proportion of the silicon component of the invention is between 0.5% and 2.0%, for example 0.7%, 0.9%, 1.1%, 1.4% or 1 selectively. 7%. In this way, it is possible to increase the fluidity of the injection at the time of melting, to help precipitate the carbonized product from the ferrite phase during the aging process, and to further reduce the tensile strength of the casting from 6.20528 × 10 8 Pa (90 ksi). Since it can be increased to 7.58424 × 10 8 Pa (110 ksi) (as shown in Table 2), the face plate's ability to receive stress is relatively increased, and the demand for the wall thickness of the face plate is further increased. It can be kept relatively thin. In this way, the weight saved by reducing the thickness of the face plate can be placed in other parts of the entire golf club head, so that the overall center of gravity position of the golf club head can be adjusted low. it can. In addition, when the present invention is applied to a head body, the present invention has a relatively higher specific gravity than conventional stainless steel, so that the moment of inertia of the head body can be increased, and the performance of a golf club head hit ball is relatively Can be increased.
ｃ）本発明のマンガンの成分の比率は０．５％から２．０％の間にあり、例えば選択的に０．７％、０．９％、１．１％、１．４％または１．７％などである。このように、オーステナイト相を強化することができるため、均一な耐蝕性を増やすと共に、伸展性を高めることができ、さらにゴルフクラブヘッドの鋳造に役立ち、後続におけるホーゼルの角度調整の自由度を増やし、打球時の強靭性を高めることができる。 c) The proportion of the manganese component according to the invention is between 0.5% and 2.0%, for example 0.7%, 0.9%, 1.1%, 1.4% or 1 selectively. 7%. Since the austenite phase can be strengthened in this way, the uniform corrosion resistance can be increased, the extensibility can be increased, and further, it is useful for casting of a golf club head, and the degree of freedom for adjusting the angle of the hosel is increased. The toughness at the time of hitting can be improved.
ｄ）本発明のニッケルの成分の比率は５．０％から１５．０％の間にあり、例えば選択的に７．０％、９．０％、１１．０％または１３．０％などであり、さらにクロムの成分の比率は１５．０％から３０．０％の間にあり、例えば選択的に１７．０％、１９．０％、２１．０％、２４．０％または２７．０％などである。このように、パーライト（Pearlite）の組織の発生を抑制することができるため、ステンレス鋼合金そのものの耐蝕性（酸化により錆びたり、孔蝕したり或いは均一に錆びたりするのができ難い）を形成することができる。 d) The proportion of the nickel component of the present invention is between 5.0% and 15.0%, such as selectively 7.0%, 9.0%, 11.0% or 13.0%. And the proportion of the chromium component is between 15.0% and 30.0%, for example 17.0%, 19.0%, 21.0%, 24.0% or 27.0 selectively. %. In this way, since the formation of pearlite structure can be suppressed, the corrosion resistance of stainless steel alloy itself (it is difficult to rust, pitting or uniformly rust due to oxidation) can do.
ｅ）本発明のクロムの成分の比率は１５．０％から３０．０％の間にあり、例えば選択的に１７．０％、１９．０％、２１．０％、２４．０％または２７．０％などである。このように、パーライト（Pearlite）の組織の発生を抑制することができると同時に、クロムの元素はフェライト相の安定の元素で、凝固することによってオーステナイト相とフェライト相との二相の組織に形成させ、フェライト相が晶界に存在すると、応力腐食割れ（Stress Corrosion Crack，ＳＣＣ）はキーイング効果（keying effect）を有することにより、伝播が難しくなるため、亀裂の模様の成長が停止される。また、フェライト相が存在すると、オーステナイト相の凝固の柱状晶の組織の排列方式を変えてしまい、すなわち元の直線晶界の排列から交錯排列の晶界に変化することにより、比較的大き目の機械応力を受けることができると同時に、異種材が高強度鋼（例えば基地相マルテンサイト系）である溶接の希釈比を許容することができ、特に不充填の溶接に適用することができる。 e) The proportion of the components of the chromium of the present invention is between 15.0% and 30.0%, for example selectively 17.0%, 19.0%, 21.0%, 24.0% or 27 0.0%. In this way, the generation of pearlite structure can be suppressed, and at the same time, the element of chromium is a stable element of the ferrite phase and is formed into a two-phase structure of austenite phase and ferrite phase by solidifying. When the ferrite phase is present at the crystal boundaries, stress corrosion cracking (SCC) has a keying effect, which makes it difficult to propagate, so that the growth of the crack pattern is stopped. Also, the presence of the ferrite phase changes the arrangement of the austenite solidified columnar crystal structure, that is, by changing from the original linear boundary arrangement to the interlaced arrangement boundary. At the same time it can be stressed, it can tolerate dilution ratios for welds in which the dissimilar material is high strength steel (e.g. matrix phase martensite), and is particularly applicable to unfilled welds.
ｆ）本発明のタングステンの成分の比率は５．０％から１５．０％の間にあり、例えば選択的に７．０％、９．０％、１１．０％または１３．０％などである。このように、凝固時において、先ずフェライト相（Ferrite）を析出することにより、高温において熱膨張の係数を相対的に低く抑えるため、熱応力の発生を避けることができる。その他に、フェライト相により比較的多い不純物を固溶することができるため、晶界において欠陥が生じるのを避けることができる。また、フェライト相が晶界に存在すると、キーイング効果（keying effect）を有することにより、亀裂の成長が停止される。さらに、フェライト相が存在すると、オーステナイト相の凝固の柱状晶の組織の排列方式を変えてしまい、すなわち元の直線晶界の排列から交錯排列の晶界に変化することにより、比較的大き目の機械応力を受けることができると同時に、異種材が高強度鋼（例えば基地相マルテンサイト系）である溶接の希釈比を許容することができ、特に不充填の溶接に適用することができる。その他に、タングステンの成分により全体の合金組成物の比重を相対的に高めることができるため、ゴルフクラブヘッドの部材の製造時における重心配置の功能を提供することができる。 f) The proportion of the tungsten component of the present invention is between 5.0% and 15.0%, such as selectively 7.0%, 9.0%, 11.0% or 13.0%. is there. Thus, during solidification, the ferrite phase (Ferrite) is first precipitated, so that the coefficient of thermal expansion is kept relatively low at high temperatures, so that generation of thermal stress can be avoided. In addition, since a relatively large amount of impurities can be dissolved in the ferrite phase, it is possible to avoid the occurrence of defects at the crystal boundaries. Also, if the ferrite phase is present at the crystal boundaries, the growth of cracks is stopped by having a keying effect. In addition, the presence of the ferrite phase changes the arrangement of the austenite solidified columnar crystal structure, that is, by changing from the original linear boundary arrangement to the interlaced arrangement boundary. At the same time it can be stressed, it can tolerate dilution ratios for welds in which the dissimilar material is high strength steel (e.g. matrix phase martensite), and is particularly applicable to unfilled welding. In addition, since the specific gravity of the entire alloy composition can be relatively increased by the component of tungsten, it is possible to provide the ability to arrange the center of gravity at the time of manufacturing the golf club head member.
ｇ）本発明のモリブデンの成分の比率は１％以下で、例えば選択的に０．９％、０．８％、０．７％、０．６％、０．５％または０．４％などである。このように、フェライト相を強化し安定させることができるため、ステンレス鋼合金が溶接時における溶接の熱亀裂の敏感性を低く抑えることができ、さらに製造し得るフェース板は比較的高い異種材溶接の互換性を有するように形成されるため、溶接による組立の製造工程に適用することができる。 g) The proportion of the molybdenum component of the present invention is 1% or less, such as selectively 0.9%, 0.8%, 0.7%, 0.6%, 0.5% or 0.4%, etc. It is. In this way, the ferritic phase can be strengthened and stabilized, so the stainless steel alloy can keep the thermal cracking susceptibility low during welding, and the face plate that can be manufactured has a relatively high dissimilar material weld Therefore, it can be applied to the manufacturing process of assembly by welding.
ｈ）本発明においては製造工程と原料の異なりにより、下記のように微量の添加物が含まれる。例えば、銅の成分の比率は１％より小さく、例えば０．９％、０．８％、０．７％、０．６％、０．５％または０．４％などで、本発明において良好な機械性質を維持することができ、さらに材料が粉砕化になるのを避けることができる。また、硫黄の成分の比率は０．０４％以下で、例えば選択的に０．０３％、０．０２％または０．０１％などであり、燐の成分の比率は０．０４％以下で、例えば選択的に０．０３％、０．０２％または０．０１％などである。このように、硫黄と燐の成分を適当な範囲に制御することにより、溶接の熱亀裂性（hot cracking）の欠陥の発生を避けることができるため、ステンレス鋼合金の成分を確保することができる。 h) In the present invention, trace amounts of additives are included as described below due to differences in the production process and raw materials. For example, the ratio of the copper component is smaller than 1%, such as 0.9%, 0.8%, 0.7%, 0.6%, 0.5%, or 0.4%, which is good in the present invention. Mechanical properties can be maintained, and the material can be prevented from becoming pulverized. Further, the ratio of the sulfur component is 0.04% or less, for example, 0.03%, 0.02%, or 0.01% selectively, and the ratio of the phosphorus component is 0.04% or less. For example, 0.03%, 0.02%, or 0.01% is selectively used. Thus, by controlling the sulfur and phosphorus components to an appropriate range, the occurrence of hot cracking defects in welding can be avoided, so that the components of the stainless steel alloy can be secured. .
上述の如く、従来のＡＳＴＭ ３０４ステンレス鋼合金には相対的に比較的低い引張強度、降伏強度と硬度を有するため、ゴルフクラブヘッドの応力を受ける能力と耐摩損性が相対的に低くなるという問題点があったが、本発明のゴルフクラブヘッドの合金によれば、ステンレス鋼合金の成分内に特定の比率のタングステンの成分を加え、さらに選択的に微量の添加物（モリブデン、銅、燐と硫黄）を加えることにより、オーステナイト相の基材においてフェライト相を生じることができるため、確実にゴルフクラブヘッドの機械性質を相対的に高めると共に、重心配置の功能を高めることができる。 As described above, the conventional ASTM 304 stainless steel alloy has a relatively low tensile strength, yield strength and hardness, so that the golf club head's ability to receive stress and wear resistance are relatively low. However, according to the golf club head alloy of the present invention, a specific proportion of tungsten component is added to the stainless steel alloy component, and a small amount of additive (molybdenum, copper, phosphorus and the like) is selectively added. By adding (sulfur), the ferrite phase can be generated in the austenite phase base material, so that the mechanical properties of the golf club head can be relatively improved and the ability of the center of gravity arrangement can be improved.
本発明は、その精神及び必須の特徴事項から逸脱することなく他のやり方で実施することができる。従って、本明細書に記載した好ましい実施例は例示的なものであり、限定的なものではない。 The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are illustrative and not limiting.
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| JPH08170153A (en) * | 1994-12-19 | 1996-07-02 | Sumitomo Metal Ind Ltd | Highly corrosion resistant two phase stainless steel |
| JPH11137740A (en) * | 1997-11-05 | 1999-05-25 | Shintomi Golf:Kk | Golf club head |
| JP2003193202A (en) * | 2001-12-25 | 2003-07-09 | Nisshin Steel Co Ltd | High elasticity metastable austenitic stainless steel sheet and production method therefor |
| JP2004066285A (en) * | 2002-08-05 | 2004-03-04 | Fu Sheng Industrial Co Ltd | Weight of golf club head and its producing method |
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| JP2007332395A (en) | 2007-12-27 |
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