Golf club head
View Patent ↗An iron-type golf club head is disclosed having a first piece including a portion of an iron-type face. A second piece including a heel portion, a sole portion, a toe portion, a top-line portion, a hinge region, and a front opening for receiving the first piece is also disclosed. A first contact surface of the first piece is connected with a second contact surface of the second piece at a contact interface. A continuous weld extends along the contact interface attaching the first and second pieces together at the contact interface. The continuous weld includes a fusion zone occurring substantially on the iron-type face outside the hinge region of the club head.
1. A method comprising:
placing a continuous weld located on the face of a cavity back iron-type golf club head, the weld extending continuously on a front striking surface of the face creating a front and rear weld bead, and being located at least partially on a contact interface between a first piece and a second piece;
removing a front weld bead from the front striking surface of the face; and
covering the rear weld bead located on a rear surface of the face with a badge, wherein the rear weld bead is obscured by the badge in the cavity back iron-type golf club head.
2. The method of claim 1 , wherein the continuous weld includes a weld centerline axis that is offset from a rear wall portion by a distance of at least 1 mm.
3. The method of claim 1 , wherein the iron-type golf club head has a total face area that is between 2,700 mm 2 -5,000 mm 2 .
4. The method of claim 1 , wherein the iron-type golf club head has a thin face area that is between 450 mm 2 -2,020 mm 2 .
5. The method of claim 1 , wherein the iron-type golf club head has a thin face thickness that is between about 1.5-2.5 mm.
6. The method of claim 1 , wherein the iron-type golf club head has a thin face thickness that is in a range of less than 2.0 mm.
7. The method of claim 1 , wherein the iron-type golf club head has a thin face area percentage that is between about 13-70%.
8. The method of claim 1 , wherein the iron-type golf club head has an inverted cone region that is about 230 mm 2 to about 2,000 mm 2 .
9. The method of claim 1 , wherein the iron-type golf club head has a first piece surface area that is about 300 mm 2 to about 4,000 mm 2 .
10. The method of claim 1 , wherein the iron-type golf club head has a coefficient of restitution that is greater than about 0.8.
11. The method of claim 1 , wherein the first piece is forged of a steel selected from the group consisting of maraging steels, maraging stainless steels, and PH stainless steels.
12. The method of claim 11 , wherein the stainless steel is C455 or 17-4 stainless steel.
13. The method of claim 1 , wherein the continuous weld includes a fusion zone that occurs substantially on the face of the iron-type golf club head outside a hinge region of the club head.
14. The method of claim 13 , wherein a fusion zone is substantially located in a relatively low impact stress region of the front striking surface.