JP3659980B2 - Golf club head - Google Patents

Description

[0001]
[Industrial application fields]
This application is a continuation-in-part of U.S. Application No. 806,348, filed December 13, 1991, and U.S. Application No. 806,348 is filed U.S. Application No. 806, filed July 9, 1990. No. 549,973, which is a continuation-in-part of U.S. Application No. 549,973, which is a continuation-in-part of U.S. Application No. 492,973 filed March 13, 1990, No. 973 is a continuation-in-part of US application 364,698 filed on June 12, 1989.
[0002]
The present invention relates to an improved face plate structure for golf clubs, particularly golf club heads.
[0003]
[Prior art]
The head of a golf club is generally made of an integrally cast product of a strong material such as stainless steel, beryllium copper, or aluminum. This type of head is known as R.I. J. et al. U.S. Pat. No. 4,021,047, issued May 3, 1977 to Mader. The use of a face plate made of a different material than the club head body has been disclosed in both prior art iron and so-called wood type drivers, often made from cast metal. Such prior art club heads are described in U.S. Pat. No. 4,792,140 issued to Yamaguchi et al. On December 20, 1988, U.S. Pat. No. 4, issued to Yoneyama on August 13, 1985. No. 534,558, US Pat. No. 3,218,072 issued to Burr on November 16, 1965, and British Patent No. 1,227 issued on May 15, 1971 to Haines et al. No. 948.
[0004]
In all the heads of these prior art patents, the face plate is made of a plastic material such as a composite material of resin or carbon fiber. Using forged metal on the club head faceplate has been found to produce a tougher head and a solid impact on the golf ball that allows for better flying ball control and a better "feel". Yes.
[0005]
[Problems to be solved by the invention]
However, forged metal is not familiar with casting, which makes it hesitant to use forged metal to form the entire head. Moreover, the forged metal tends to have a high density, which leads to excessive weight of the club head.
[0006]
[Means for Solving the Problems]
The golf club head of the present invention is an improvement over the prior art head by using a face plate made of forged metal. The final result is a forged metal selected from the class consisting of forged carbon steel, forged stainless steel, forged beryllium copper, and forged titanium, with the head body made of investment casting materials such as stainless steel, beryllium copper, titanium, and aluminum. By attaching the face plate made of, for example, by appropriate means such as welding, the cost and weight of the driving head are not increased so much.
[0007]
Forged metal faceplates have been found to be inherently tougher with a more uniform hardness over the entire striking face of the plate than cast metal faceplates. This is because such materials have a low porosity, high density and homogeneous particle structure, which contributes to a more responsive plate. On the other hand, the cast metal is lighter and is suitable for the body of the club head because it helps reduce the overall weight of the club head. It is very important that the face plate is firmly fixed to the main body of the head by welding or the like and finished into a head structure that is firmly integrated.
[0008]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a golf club head having a face plate made of a forged metal that gives a more responsive and touchy impact and enables better control.
[0009]
Another object is to provide a faceplate with added heel and toe areas to add weight to the golf club and provide improved ball stroke control, and to provide such a faceplate also made of forged metal. With the goal.
[0010]
A further object is a forged faceplate that slopes on the iron club head and extends to the bottom level of the head to form the lowermost front edge of the head, which strikes and wears the turf during the golf ball striking movement of the head. A forged face plate that resists, an iron head, having a top wall, a bottom wall, a heel, a toe, a face plate edge, and a weld loop, wherein the weld loop is: i) the upper wall more than the toe Ii) extends closer to the bottom wall than the toe iii) extends closer to the top wall than the heel iv) protrudes closer to the bottom wall than the heel It is to provide an iron head characterized by at least one, preferably all.
[0011]
These and other objects and advantages of the present invention will become more fully understood from the following detailed description and drawings, as well as the details of the embodiments.
[0012]
【Example】
1 to 4 show a first embodiment of the present invention. The face plate 11 is made of a material selected from the group of forged carbon steel, forged stainless steel, forged beryllium copper, and forged titanium, and has a lip portion 11a. The club head body 12 is formed by investment casting a material such as stainless steel, beryllium copper, titanium, or aluminum. The main body 12 has a slot 12a formed therein, and a recess 12b for fitting the male and female to the face plate 11 by fitting the lip portion 11a into the slot 12a. The face plate 11 is firmly integrated with the main body 12 by welding joints 14 formed along the periphery of the face plate. Thus, the face plate is firmly integrated by casting.
[0013]
FIGS. 5 to 7 show a second embodiment of the present invention. This embodiment is a so-called “wood” type driver. The main body 12 is formed by investment casting a material such as stainless steel, beryllium copper, titanium, or aluminum as in the above embodiment. The face plate 11 is also made of a forged metal selected from the same class of materials as in the first embodiment, as in the previous embodiment. The face plate 11 is adjacent to the front surface of the casting and is firmly joined thereto along the weld joint 14, and the face plate is integrated into the casting by the weld joint running along the periphery of the face plate.
[0014]
For best results, the head and faceplate are preferably made of the same high hardness material, such as stainless steel. One such steel is 17-4PH forged stainless steel. This allows for the best welded connection of these parts and allows resistance to delamination based on repeated sharp impacts with the golf ball. In this regard, please refer to FIGS. 8 to 11 showing the connection state of these parts.
[0015]
In FIG. 8, a slot 12b along the circumference is formed in the thick portion 12c of the cast stainless steel head protruding forward. See arrow 15. The slot and the thick portion 12 c protrude as a loop near the open end of the head that is hollow at 16. The thickness t, which indicates the range of the main wall of the head behind the thick portion 12c, except that the sole plate is typically in the range of 0.085 to 0.100 inches (2.16 to 2.54 mm), Typically in the range of 050 to 0.070 inches (12.7-1.8 mm). The lip 12d surrounding the head is generally L-shaped in cross section and covers the slot 12b.
[0016]
FIG. 9 shows a forged stainless steel plate 11 that surrounds a peripheral portion 11a closely fitted into the annular slot 12b. FIG. 11 shows this plate together with the plate wall 11b adjacent to the annular shelf 12e constituting one wall of the slot.
[0017]
FIG. 11 also shows the weld 14 applied to the elements 12d and 11a and penetrating into the gap between 11a and 12d. After polishing along the finish line 17, the annular periphery of the head and plate is rounded forward so that a portion of the weld remains in the gap, as indicated at 20 in FIG. Thus, a high strength and high rigidity bond is created between the high strength compatible stainless steel elements 11 and 12, and the element 11 has a very high strength and great resistance to breakage due to cracking and deformation during use. It is forged with a very large resistance against.
[0018]
The forged plate 11 desirably has a uniform wall thickness within 0.090 to 0.130 inches (2.3 to 3.3 mm), and is desirably thinner than the sole plate 13.
[0019]
The manufacturing method of the high-strength head includes the following steps.
[0020]
a) casting the metal body of the golf club head;
b) Forging the metal face plate of the golf club head;
c) A forged face plate is welded to the front surface of the head main body so as to fit the front peripheral portion of the main body.
[0021]
Further, step a typically includes the step of forming a lip portion 12d at the periphery of the head body, and step c includes the step of welding the peripheral portion 11a of the forged face plate to the lip portion 12d. included. Then, the welded lip portion and the plate peripheral portion are polished, and a convex and smooth head surface is formed while bounding the plate peripheral portion.
[0022]
Referring now to FIGS. 12-14, another embodiment of the present invention is illustrated, a metal wood head having a body 120 made of a first metallic material. For the main body, an investment casting material such as stainless steel, beryllium copper, titanium, or aluminum may be used. The face plate 121 is made of a second metallic material and is forged with high strength. Desirably, the faceplate metal may be the same as the body metal, typically both constructed from stainless steel. The forged face plate 121 is adjacent to the surface of the front shelf of the main body (typically cast), and is firmly integrated with the front shelf along the weld joint 124 so that the weld joint is a face. The face plate and the main body are integrated by running along the annular peripheral portion of the plate.
[0023]
Thus, for example, the forged plate 121 has an annular peripheral portion 121a that fits closely into the annular slot 120b and a plate wall 121b adjacent to the annular shelf 120e that constitutes one wall of the slot. The manufacturing method including welding is performed in accordance with FIG. 11 and the description thereof, and thus a club head (metal wood) having high strength and not easily broken is formed. The face plate 121 may be convex upward with the shape of the annular peripheral portion of the plate 11, may be convex downward, or may be generally trapezoidal.
[0024]
One aspect of the present invention is a face plate having a first portion, a second portion, and an intermediate portion, wherein the first portion and the second portion of the face plate are closer to the toe and heel of the body than the intermediate portion, respectively. It is to provide a face plate positioned in a position. In this respect, it is desirable that the first and second portions of the face plate have a greater thickness than the intermediate portion. Look at the first part 121f and the second part 121g of the faceplate. The former is closest to the head toe 135, and the latter 121g is closest to the head heel 136. FIG. 13 shows portions 121f and 121g that protrude toward the space 140 behind the plate. FIG. 14 shows that the portion 121 f is located between the front surface 143 and the back surface 144, and the portion 121 g is located between the front surface 145 and the back surface 146. The intermediate portion 121h of the plate lies, for example, between the surfaces 143 and 145, and the lateral width m of the intermediate portion 121h is larger than the lateral widths p and q of the first and second portions 121f and 121g. The intermediate portion 121h has a thinner central portion than both the portions 121f and 121g, so that the metal weight of the forged plate is “redistributed” over the toe and heel between the face plate and the club head body, and impacts golf. It can resist torsion of the club head and shaft while hitting the ball. As illustrated, the thickness t1 of the plate portion 121f increases gradually and smoothly over the surface 144, and the thickness t2 of the plate portion 121g increases gradually and smoothly over the surface 146. The toe and heel welds 160 of the faceplate and the heel welds 161 of the faceplate similarly promote the weight effect of the toe and heel.
[0025]
FIG. 15 shows the same configuration except that the thickness of the portion 121f is increased by the first step 121f ′ toward the surface 144. The thickness of the portion 121g is increased by one step 121g ′ over the surface 146. The middle part 121h of the plate only needs to have a minimum thickness t3 at a substantially central part between the thickened parts 121f and 121g. While t3 is in the range of about 1 to 6 mm, t1 and t2 increase to 4 to 8 mm in the width direction, respectively. However, other dimensions may be used. The annular shelf 120e ′ is inclined, that is, tapered, like the countersink shown in FIG. The means for fastening the plate (to the head shell) may be other means.
[0026]
In FIG. 16, the forged face plate 121 may be similar to that shown in FIG. 13, and the peripheral portion may be attached to the annular shelf 151 formed on the iron head 152 by welding at a location 150. It should be noted that the plate weight is “redistributed” at 121f and 121g over the iron head toe 152a and heel 152b, which adds a “twisting effect”. It should also be noted that the concave portion 153 formed in the head main body and the plate portions 121f and 121g having increased thickness protruded therein.
[0027]
In the iron shown in FIG. 17, the forged face plate 211 has the same composition as the face plate 11 defined in FIG. The main body 212 of the head is a casting having the same composition as defined in the main body 12. Preferably, both 211 and 212 have the same metal composition, such as steel, eg stainless steel. The face plate 211 extends to the bottom level of the head, and as shown in FIG. FIG. 21 illustrates a faceplate lower edge 250a that resists wear by forming a turf driven lowermost front edge of the head. A weld 290 attaches the lowermost edge portion back surface 250b to the main body lowermost edge portion 212a. The face plate 211 also projects between the parallel vertical edge portions 251 and 252 on both sides toward the vertex level of the head indicated by 253. The uppermost end or edge portion 254 of the face plate is substantially straight, but projects upward toward the uppermost end at 255a at the end of the toe 255 of the head. In the illustrated face plate, the top side and the bottom side are extended to the end of the edge portion as described above, and the outer shape, ie, the shape is trapezoidal.
[0028]
The main body 212 forms shelf means for supporting the peripheral portion of the face plate inside the surface defined by the front face of the face plate. Such shelf means includes a first shelf 258 near the head toe 255 and extending vertically from the bottom level of the head to near the top level of the head, as seen in FIGS. A second shelf is illustrated at 260 near the head heel end 261 and extending vertically from the bottom level of the head to near the top level of the head. A third shelf 262 projects at 258a, 260a near the upper level of the head, generally parallel to the upper level and toward the uppermost ends of the shelves 258, 260. Shelves 258 and 260 extend in a parallel relationship, and shelf 258 is substantially longer than shelf 260. These three shelves 258, 260, and 262 are all bevel-shaped, and form a seat and an alignment surface for the face plate having the corresponding bevel-shaped portions at 270 and 271 as shown in FIG. . As in 290 to 293, the loop welding is provided in the gap between the face plate periphery and the main body. The welding tension 290 is on the back side of the forged edge portion 250a, thus protecting sand, rocks and the like from directly engaging from the front. After welding, the head is polished, polished and surface-treated so as to have the appearance shown in FIG. 19, for example. The looped edge of the faceplate where the loop is welded and where the weld is formed extends i) closer to the top wall than the tow ii) towards the bottom wall than the tow Iii) extending closer to the top wall than the heel iv) extending at the bottom wall closer to the heel at least one or preferably all.
[0029]
The head may have a back cavity (cavity back) at 297 and may have a vertical wall 298. A hosel is provided at 299.
[0030]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a golf club head having a face plate made of a forged metal that gives a more firm impact and feel and enables better control. In addition, a heel and a toe region are added to give the golf club weight and provide a face plate with improved control of the ball stroke, and the face plate can be made of forged metal. Play.
[Brief description of the drawings]
FIG. 1 is a side view of a first embodiment of the present invention.
FIG. 2 is a bottom view of the first embodiment.
FIG. 3 is a plan view showing a face plate used in the first embodiment.
FIG. 4 is a plan view of the first embodiment.
FIG. 5 is a side view of a second embodiment of the present invention.
FIG. 6 is a bottom view of the second embodiment.
FIG. 7 is a front perspective view of the second embodiment.
FIG. 8 is a longitudinal sectional view showing attachment of a plate to a head.
FIG. 9 is a longitudinal sectional view showing attachment of a plate to a head.
FIG. 10 is a longitudinal sectional view showing attachment of a plate to a head.
FIG. 11 is an enlarged sectional view showing welding and finishing.
FIG. 12 is a longitudinal sectional view of a metal wood head showing another embodiment of the present invention.
13 is a cross-sectional view taken along line 13-13 of FIG.
14 is a front view showing the metal wood of FIG.
FIG. 15 is a cross-sectional view of the same type as FIG. 13 showing a modification.
FIG. 15a is a perspective view of the face plate of FIG.
16 is a cross-sectional view similar to FIG. 13 showing an iron incorporated in the present invention.
FIG. 17 is a view similar to FIG. 1 and shows a modification.
18 is a cross-sectional view taken along line 18-18 in FIG.
FIG. 19 is a partial elevation view showing the completed head.
20 is a cross-sectional view taken along line 20-20 in FIG.
FIG. 21 is an enlarged cross-sectional view taken along line 21-21 in FIG.
[Explanation of symbols]
11, 121, 211 Face plate 12, 120, 212 Main body 14, 124 Weld joint 290 Weld

Claims (36)

A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a second metal material that is forged and harder than the first metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, provided with a weld to form the forged face plate on the golf club head,
d) The metal material for the face plate and the main body is the same material.
A golf club head characterized by that. The golf club head according to claim 1,
The head has a top wall, a bottom wall, a toe and a heel,
A first minimum gap between the loop shape portion and the upper wall, and a second minimum gap between the loop shape portion and the toe,
The golf club head, wherein the first minimum gap is smaller than the first and second minimum gaps. The golf club head according to claim 1,
A third minimum gap between the loop shape portion and the bottom wall, and a fourth minimum gap between the loop shape portion and the heel,
Of the third and fourth minimum gaps, the third minimum gap is smaller. A golf club head, wherein: The golf club head according to claim 2, wherein
And a fourth minimum gap between the loop shape portion and the heel,
The golf club head, wherein the fourth minimum gap is larger than the first minimum gap. The golf club head according to claim 3, wherein
A golf club head, wherein a third minimum gap between the loop shape portion and the bottom wall is smaller than a fourth minimum gap between the loop shape portion and the heel. The golf club head according to claim 2, wherein
The loop-shaped portion corresponds to at least two of the following: i) protrudes closer to the bottom wall than the tow,
ii) protrudes closer to the upper wall than the tow,
iii) protrudes closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 1,
The main body forms first and second shelves that support the periphery of the face plate, and the first and second shelves are seated on corresponding beveled surfaces defined by the face plate. Defines a beveled surface to
A golf club head characterized by that. The golf club head according to claim 1,
The forged faceplate extends to the bottom level of the head to form the lowermost front edge of the head and strikes a turf during a golf ball hit of the head;
A golf club head characterized by that. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate formed of a second metal material that is forged and harder than the first metal material;
c) means for coupling a peripheral portion of the face plate to the main body, and forming the forged face plate on the golf club head;
d) The metal material for the face plate and the main body is the same material,
e) The means for connecting the peripheral part of the face plate to the body part comprises a welded part ,
f) The head includes an upper wall, a bottom wall, a toe, a heel, and the loop-shaped portion.
The loop-shaped portion corresponds to at least one of the following: i) protrudes closer to the upper wall than the tow;
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop-shaped portion corresponds to at least two of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop-shaped portion corresponds to at least three of any of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop-shaped portion corresponds to all of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop shape portion protrudes upward toward the upper wall,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop shape portion is a polygonal shape,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The loop-shaped part is trapezoidal,
A golf club head characterized by that. The golf club head according to claim 9 , wherein
The forged faceplate extends to the bottom level of the head to form the lowermost front edge of the head and strikes a turf during a golf ball hit of the head;
A golf club head characterized by that. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a second metal material that is forged and harder than the first metal material;
c) means for coupling a peripheral portion of the face plate to the main body, and forming the forged face plate on the golf club head;
d) The metal material for the face plate and the main body is the same material,
e) The peripheral portion of the face plate extends in a loop shape,
f) The means for coupling the peripheral part of the face plate to the main body part comprises a welded part ,
A golf club head characterized by that. The golf club head according to claim 17 , wherein
The loop-shaped portion corresponds to at least two of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 17 , wherein
The loop-shaped portion corresponds to at least three of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 17 , wherein
The loop-shaped portion corresponds to all of the following: i) protrudes closer to the upper wall than the tow,
ii) protrudes closer to the bottom wall than the tow,
iii) projecting closer to the upper wall than the heel,
iv) protruding closer to the bottom wall than the heel,
A golf club head characterized by that. The golf club head according to claim 20 , wherein
The golf club head according to claim 1, wherein a weld portion protruding closer to the bottom wall than the toe is offset rearward from a lowermost front edge portion defined by the forged face plate. The golf club head according to claim 17 , wherein
The loop shape portion is a polygonal shape,
A golf club head characterized by that. The golf club head according to claim 17 , wherein
The loop-shaped part is trapezoidal,
A golf club head characterized by that. The golf club head according to claim 17 , wherein
The forged faceplate extends to the bottom level of the head to form the lowermost front edge of the head and strikes a turf during a golf ball hit of the head;
A golf club head characterized by that. A golf club head having a heel and a toe,
a) a main body formed of cast steel;
b) a face plate made of forged steel and having a peripheral part;
c) welding means for coupling a peripheral portion of the face plate to the main body portion and forming the forged face plate on the golf club head;
d) The main body has a recess into which a peripheral part of the face plate is fitted,
The welding means for coupling the face plate to the main body comprises a welded joint structure formed along the periphery of the face plate, and the periphery of the face plate is welded to the recess;
The welding means extends in a loop shape along the periphery of the face plate;
The welding means and the face plate extend to the bottom level of the head and extend toward the toe and heel of the head;
e) The face plate has a trapezoidal shape, the top side is convex upward, and the base is convex downward.
A golf club head characterized by that. The golf club head according to claim 25 ,
The golf club head according to claim 1, wherein the main body portion forms shelf means for supporting a peripheral portion of the face plate. 27. A golf club head according to claim 26 .
The shelf means includes
A first shelf near the toe and extending vertically from the bottom level of the head to near the top level of the head;
A second shelf near the heel and extending vertically from the bottom level of the head to near the top level of the head;
A third shelf near the upper level of the head and extending toward the uppermost ends of the first and second shelves generally parallel to the upper level;
A golf club head characterized by that. The golf club head according to claim 27 ,
The first and second shelves extend generally parallel to the vertical direction, and the first shelf is longer than the second shelf.
A golf club head characterized by that. The golf club head according to claim 25 ,
The forged faceplate extends to the bottom level of the head to form the lowermost front edge of the head and strikes a turf during a golf ball hit of the head;
A golf club head characterized by that. A golf club head having a heel and a toe,
a) a main body formed of cast steel;
b) a face plate made of forged steel and having a peripheral part;
c) welding means for coupling a peripheral portion of the face plate to the main body portion and forming the forged face plate on the golf club head;
d) The main body has a recess into which a peripheral part of the face plate is fitted,
The welding means for coupling the face plate to the main body comprises a welded joint structure formed along the periphery of the face plate, and the periphery of the face plate is welded to the recess;
The welding means extends in a loop shape along the periphery of the face plate;
The welding means and the face plate extend to the bottom level of the head and extend toward the toe and heel of the head;
e) The welding means has a trapezoidal shape, the top of the trapezoid is convex upward, and the bottom is convex downward.
A golf club head characterized by that. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a second metal material that is forged and harder than the first metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, and means comprising a weld to form the forged face plate on the golf club head,
d) the forged faceplate forms the lowermost front edge of the club head;
A golf club head characterized by that. The golf club head according to claim 31 , wherein
The second forging material is forged steel;
The first cast steel material is selected from the group of steel, beryllium copper and aluminum;
A golf club head characterized by that. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a forged second metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, and means comprising a weld to form the forged face plate on the golf club head,
d) the forged faceplate forms the lowermost front edge of the club head;
e) at least one of the first and second metallic materials is selected from the group of steel, beryllium copper, titanium and aluminum ;
A golf club head characterized by that. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a forged second metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, and means comprising a weld to form the forged face plate on the golf club head,
d) The golf club head, wherein the club head has a lowermost front edge portion, and the forged face plate extends to near the lowermost front edge portion of the club head. A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a second metal material that is forged and harder than the first metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, and means comprising a weld to form the forged face plate on the golf club head,
d) the club head has a lowermost front edge, and the forged faceplate extends near the lowermost front edge of the club head;
e) At least one of the first and second metal materials is selected from the group consisting of steel, beryllium copper, titanium, and aluminum . A golf club head,
a) a main body formed by investment casting made of a first metal material;
b) a face plate made of a second metal material that is forged and harder than the first metal material;
The Rukoto coupled to the body portion by welding a peripheral portion of c) the face plate, and means comprising a weld to form the forged face plate on the golf club head,
d) The golf club head, wherein at least one of the first and second metal materials is selected from the group consisting of steel, beryllium copper, titanium, and aluminum.

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