US20140241932A1 - Alloy for Golf Club Heads - Google Patents

Alloy for Golf Club Heads Download PDF

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Publication number
US20140241932A1
US20140241932A1 US14/188,754 US201414188754A US2014241932A1 US 20140241932 A1 US20140241932 A1 US 20140241932A1 US 201414188754 A US201414188754 A US 201414188754A US 2014241932 A1 US2014241932 A1 US 2014241932A1
Authority
US
United States
Prior art keywords
alloy
golf club
club heads
club head
manganese
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/188,754
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English (en)
Inventor
Chan-Tung Chen
Wen-Ching Tsai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fusheng Precision Co Ltd
Original Assignee
Fusheng Precision Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fusheng Precision Co Ltd filed Critical Fusheng Precision Co Ltd
Assigned to FUSHENG PRECISION CO., LTD. reassignment FUSHENG PRECISION CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, CHAN-TUNG, TSAI, WEN-CHING
Publication of US20140241932A1 publication Critical patent/US20140241932A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • A63B53/047—Heads iron-type
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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

Definitions

  • the present invention relates to an alloy and, more particularly, to an alloy for application in golf club heads and having a smaller specific gravity.
  • golf club heads are provided with weight blocks having different weights to lower the center of gravity of the golf club heads for the purposes of providing better control on the flight and landing point of the golf balls and enlarging the sweet spot area on a surface of the golf club head.
  • weight blocks having different weights to lower the center of gravity of the golf club heads for the purposes of providing better control on the flight and landing point of the golf balls and enlarging the sweet spot area on a surface of the golf club head.
  • each golf club head has a limitation to its weight.
  • the upper limit of the weight of a No. 5 club head is 254 g.
  • the weight-adjusting tolerance of a golf club head could be lost if the alloy for making the golf club head is heavier, not allowing mounting of an additional weight block for changing the center of gravity of the golf club head, leading to difficulties in adjustment of the center of gravity of the golf club head according to the user needs.
  • Taiwan Patent Publication No. 438610 discloses SUS 17-4PH stainless steel alloy having a specific gravity of 7.8 g/cm 3 .
  • a golf club head made from the SUS17-4PH stainless steel alloy is restricted by the specific gravity of the SUS17-4PH stainless steel alloy and, thus, does not allow mounting of an additional weight block in the golf club head for adjusting the center of gravity of the golf club head.
  • the inclination angle (the angle between a central axis of a shaft of the golf club head and the ground, wherein a sole of the golf club head rests flat on the ground) affects the hitting direction and hitting precision.
  • a worker can slightly adjust the inclination angle according to the figure, gripping manner, habitual gesture, and swing speed of the golfer to meet different needs of different users.
  • Table 1 shows heat treatment values of SUS17-4PH stainless steel alloy, wherein group A was treated with solution heat treatment and rapid cooling at 1020-1060° C., group B was treated with air cooling at 470-490° C. after the same treatment as group A, group C was treated with air cooling at 540-560° C. after the same treatment as group A, group D was treated with air cooling at 570-590° C. after the same treatment as group A, and group E was treated with air cooling at 610-630° C. after the same treatment as group A.
  • SUS17-4PH stainless steel alloy has a higher yield strength such that a golf club head made of SUS17-4PH stainless steel alloy is difficult to proceed with the inclination angle adjustment.
  • a golf club head made of SUS17-4PH stainless steel alloy is difficult to proceed with the inclination angle adjustment.
  • the primary objective of the present invention is to provide an alloy for golf club heads.
  • the alloy has a smaller specific gravity such that a golf club head made of the alloy has a larger tolerance in adjustment of the center of gravity of the golf club head, allowing adjustment of the center of gravity in customization according to the user needs.
  • Another objective of the present invention is to provide an alloy for golf club heads.
  • the alloy has a lower yield strength such that the angle adjustability of a golf club head made of the alloy can be increased.
  • the inclination angle error in a customized process can be corrected by slight adjustment to increase the yield.
  • the present invention fulfills the above objectives by providing an alloy for golf club heads including 3.0-5.5 wt % of silicon, 8.0-10.5 wt % of manganese, 14.5-17.0 wt % of chromium, 3.5-6.0 wt % of nickel, the rest being iron and inevitable impurities.
  • the alloy includes 3.8-4.8 wt % of silicon.
  • the alloy includes 8.5-9.5 wt % of manganese.
  • the alloy includes 15.0-16.0 wt % of chromium.
  • the alloy includes 4.5-5.5 wt % of nickel.
  • the ratio of silicon to manganese is 0.2-0.9.
  • the ratio of nickel to chromium is 0.2-0.4.
  • the alloy has a specific gravity of 7.4-7.6 g/cm 3 .
  • he alloy has a tensile strength of 77.4-91.5 kgf/mm 2 .
  • the alloy has a tensile strength of 35.2-49.3 kgf/mm 2 .
  • the specific gravity of the alloy for golf club heads according to the present invention is reduced by adjusting the ingredients.
  • a golf club head made of the alloy for golf club heads has a larger tolerance in adjustment of the center of gravity, allowing customized adjustment of the center of gravity according to user needs.
  • the figure shows a schematic view of a golf club head according to the present invention.
  • a golf club head of this embodiment includes a club head body 11 , a neck 12 , and a striking plate 13 .
  • the neck 12 is provided on a side of the club head body 11 for coupling with a shaft (not shown).
  • the club head body 11 and the neck 12 can be integrally formed.
  • the striking plate 13 is provided on a face of the club head body 11 for hitting a ball.
  • An alloy for golf club heads according to the present invention can be used to make the club head body 11 and the neck 12 .
  • the alloy for golf club heads according to the present invention can be produced by the following steps.
  • ingredients including a master alloy, silicon iron, manganese iron, chromium iron, and nickel are added in sequence into a high temperature furnace to melt and mix the ingredients.
  • the ingredients based on silicon, manganese, chromium, and nickel melt in the high temperature furnace (such as a high frequency furnace) and forms an alloy including a composition of carbon, silicon, manganese, chromium, and nickel having a certain percentage ratio among these elements.
  • the alloy can be used as a matrix for the neck 12 and the club head body 11 .
  • the master alloy in addition to iron, includes 3.0-5.5 wt % of silicon, 8.0-10.5 wt % of manganese, 14.5-17.0 wt % of chromium, and 3.5-6.0 wt % of nickel, and preferably includes 3.8-4.8 wt % of silicon, 8.5-9.5 wt % of manganese, 15.0-16.0 wt % of chromium, and 4.5-5.5 wt % of nickel.
  • the material sources can be changed according to needs and can melt to form an iron alloy having the same composition.
  • the ingredients i.e., the master alloy, silicon iron, manganese iron, chromium iron, and nickel, are preferably added into the high temperature furnace according to a specific melting sequence such that the molten alloy includes silicon, manganese and other components, providing the resultant alloy with appropriate characteristics. Furthermore, by adding the ingredients according to the specific melting sequence, precipitation during melting of the ingredients is avoided, avoiding low yield rate of the products of the club head body 11 and the neck 12 made subsequently. Furthermore, in this embodiment, fine grains of the ingredients are preferably used and are slowly added in a small amount many times as possible to avoid incomplete melting of ingredients due to addition of a large quantity of ingredients. Incomplete melting causes the ingredients to bond into lumps, resulting in formation of voids or bubbles in the high temperature furnace that cause potential danger.
  • a specific melting sequence such that the molten alloy includes silicon, manganese and other components, providing the resultant alloy with appropriate characteristics. Furthermore, by adding the ingredients according to the specific melting sequence, precipitation during melting of the ingredients is avoided, avoiding low yield
  • the weight ratio of the molten alloy can be measured by sampling to assure that the composition of the ingredients is maintained as follows: 3.0-5.5 wt % of silicon, 8.0-10.5 wt % of manganese, 14.5-17.0 wt % of chromium, 3.5-6.0 wt % of nickel, 1, and preferably includes 3.8-4.8 wt % of silicon, 8.5-9.5 wt % of manganese, 15.0-16.0 wt % of chromium, and 4.5-5.5 wt % of nickel, the rest being iron and inevitable impurities.
  • the special composition ratio of the molten alloy an alloy with a low specific gravity and a low yield strength can be obtained after the molten alloy is cooled and solidifies.
  • the above alloy can undergo precision casting to produce the club head body 11 and the neck 12 having specific shapes. Specifically, after the composition ratio of the molten alloy is confirmed, degassing and deslagging can be conducted before the molten alloy is discharged out of the furnace. Thus, the alloy can directly be poured into a mold for precision casting of the club head body 11 and the neck 12 (and/or the striking plate 13 ).
  • a golf club head casted in this way can undergo shell vibration, degating, trimming, grinding, and polishing to form of a wedge of an iron golf club or a wood golf club without heat treatment.
  • the resultant wedge possesses characteristics including a low specific gravity and a low yield strength.
  • an alloy for golf club heads includes 3.0-5.5 wt % of silicon, 8.0-10.5 wt % of manganese, 14.5-17.0 wt % of chromium, 3.5-6.0 wt % of nickel, the rest being iron and inevitable impurities.
  • the alloy includes 3.8-4.8 wt % of silicon, 8.5-9.5 wt % of manganese, 15.0-16.0 wt % of chromium, 4.5-5.5 wt % of nickel, the rest being iron and inevitable impurities.
  • the specific gravity of the alloy is 7.4-7.6 g/cm 3 .
  • the alloy for golf club heads has a low yield strength which is advantageous in angle adjustment of golf club heads.
  • the alloy for golf club heads according to the present invention can be used to produce bars for forging, which, in turn, can undergo several forging and pressing procedures in a predetermined number of forging molds according to the product or procedure needs, such that the outline of the bars for forging can gradually form a blank having a predetermined shape.
  • the golf club head 1 can be obtained after several surface processing procedures.
  • Table 2 shows a comparison of the composition between the alloy for golf club heads according to the present invention and SUS17-4PH stainless steel alloy.
  • the specific gravity of the alloy for golf club heads according to the present invention is 7.4-7.6 g/cm 3 , which is smaller than the specific gravity (7.715 g/cm 3 ) of SUS17-4PH stainless steel alloy.
  • a golf club head made from the alloy for golf club heads has a larger tolerance in adjustment of the center of gravity, allowing customized adjustment of the center of gravity according to user needs.
  • Table 3 shows a comparison of heat treatment values between the alloy for golf club heads according to the present invention and SUS17-4PH stainless steel alloy.
  • the heat treatment was 1.5 hour of solution heat treatment and rapid cooling at 1050° C.
  • the result showed that the alloy for golf club heads has a lower yield strength (the critical point between the elastic deformation and permanent deformation) by ingredient adjustment.
  • yield strength the critical point between the elastic deformation and permanent deformation
  • the inclination angle 0 (the angle between the central axis of the neck 12 and the ground G when the club head body 1 rests flat on the ground G, see the figure) of the golf club head was adjusted by +3°, ⁇ 3°, and +3° in sequence.
  • the angle adjusting torque was measured by a torque meter, and the outer surfaces of the golf club heads were observed to check whether creases were formed.
  • Table 4 shows a comparison between the alloy for golf club heads according to the present invention and SUS17-4PH stainless steel alloy in the angle adjustability. The result showed that the alloy for golf club heads according to the present invention has a lower angle adjustment torque (namely, better angle adjustability). No creases were formed on the outer surfaces of the golf club heads when observed with the naked eye.
  • the alloy for golf club heads according to the present invention indeed possesses better angle adjustability by ingredient adjustment.
  • the specific gravity of the alloy for golf club heads according to the present invention is reduced by adjusting the ingredients.
  • a golf club head made of the alloy for golf club heads has a larger tolerance in adjustment of the center of gravity, allowing customized adjustment of the center of gravity according to user needs.
  • the alloy for golf club heads according to the present invention has a lower yield strength such that the angle adjustability is increased due to easy deformation of the golf club head.
  • the inclination angle error in a customized process can be corrected by slight adjustment to increase the yield.

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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)
US14/188,754 2013-02-28 2014-02-25 Alloy for Golf Club Heads Abandoned US20140241932A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013038082A JP5745555B2 (ja) 2013-02-28 2013-02-28 ゴルフクラブヘッドの合金
JP2013-038082 2013-02-28

Publications (1)

Publication Number Publication Date
US20140241932A1 true US20140241932A1 (en) 2014-08-28

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Application Number Title Priority Date Filing Date
US14/188,754 Abandoned US20140241932A1 (en) 2013-02-28 2014-02-25 Alloy for Golf Club Heads

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US (1) US20140241932A1 (ja)
JP (1) JP5745555B2 (ja)
CN (1) CN104018097A (ja)
TW (1) TWI511762B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106032561A (zh) * 2015-03-11 2016-10-19 大田精密工业股份有限公司 高尔夫球铁杆头的组成合金
CN106854736B (zh) * 2015-12-08 2018-09-11 大田精密工业股份有限公司 铁基低密度高尔夫球头不锈钢合金及其制造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448052A (ja) * 1990-06-14 1992-02-18 Nisshin Steel Co Ltd 高温延性に優れたオーステナイト系ステンレス鋼の熱間加工方法

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JPS53125217A (en) * 1977-04-07 1978-11-01 Nippon Metal Ind Austenite heattresistant steel for catalyst converter of exhaust gas purification apparatus
JP2650561B2 (ja) * 1992-03-09 1997-09-03 ヤマハ株式会社 鋼製メタルヘッドの製造方法
JPH09182819A (ja) * 1995-12-28 1997-07-15 Mitsubishi Materials Corp ゴルフクラブヘッド
JPH11137740A (ja) * 1997-11-05 1999-05-25 Shintomi Golf:Kk ゴルフクラブヘッド
JP4005200B2 (ja) * 1998-01-30 2007-11-07 株式会社シントミゴルフ ゴルフクラブの製造方法
WO2000061241A1 (en) * 1999-04-08 2000-10-19 Kimberlite Enterprises, Inc. Metal alloy golf club heads
KR100329841B1 (ko) * 1999-08-16 2002-03-25 박용수 골프 클럽 헤드용 마르텐사이트 스테인리스강
JP2001170230A (ja) * 1999-12-21 2001-06-26 Daido Steel Co Ltd ゴルフクラブのヘッド
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TWI289074B (en) * 2006-05-22 2007-11-01 Fu Sheng Ind Co Ltd Stainless steel for club weight member of golf club head
JP4669444B2 (ja) * 2006-06-12 2011-04-13 復盛股▲分▼有限公司 ゴルフクラブヘッドの合金
JP2008018115A (ja) * 2006-07-14 2008-01-31 Daido Castings:Kk ゴルフクラブヘッド
TW200940126A (en) * 2008-03-28 2009-10-01 Ota Precision Ind Co Ltd Composed alloy of iron golf club head
JP2011058040A (ja) * 2009-09-09 2011-03-24 Ota Precision Industry Co Ltd アイアンクラブヘッドの構成に適する鉄基合金及びそれからなっているアイアンクラブヘッド
TWI426939B (zh) * 2011-01-13 2014-02-21 Fusheng Prec L Co Ltd 高爾夫球桿頭合金及其製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448052A (ja) * 1990-06-14 1992-02-18 Nisshin Steel Co Ltd 高温延性に優れたオーステナイト系ステンレス鋼の熱間加工方法

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Title
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Also Published As

Publication number Publication date
JP5745555B2 (ja) 2015-07-08
CN104018097A (zh) 2014-09-03
TW201438793A (zh) 2014-10-16
JP2014161691A (ja) 2014-09-08
TWI511762B (zh) 2015-12-11

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Owner name: FUSHENG PRECISION CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, CHAN-TUNG;TSAI, WEN-CHING;REEL/FRAME:032288/0415

Effective date: 20140220

STCB Information on status: application discontinuation

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