US 2026/0284480 A1 · METHODS FOR ENHANCING STRENGTH OF TITANIUM ALLOYS, GOLF CLUB STRIKING FACES, AND GOLF CLUB HEADS

Abstract

A method for manufacturing a golf club head and a golf club head including a forged striking face insert having a specified geometry or curvature are provided. The method may include forming a pre-forged striking face insert from an α-β titanium alloy having a Molybdenum equivalency of about 8 to 11 or an Aluminum equivalency of about 2 to 7, using a multiplex aging heat treatment on the striking face insert. The method may include forming a pre-forged striking face insert from an α-β titanium alloy having a Molybdenum equivalency of about 4.5 to 6 or an Aluminum equivalency of about 5.8 to 8, using only a single-step heat treatment on the striking face insert. The method may further include attaching the forged striking face insert to form a golf club head, and performing the heat treatment on the golf club head.

Claims20

Dependent claims

A method for manufacturing a striking face insert for a golf club, the method comprising:

forming a pre-forged striking face insert from an alpha-beta (α-β) titanium alloy having a Mo equivalency as calculated using Equation 1.1 of about 8 to about 11, or an Al equivalency as calculated using Equation 2.2 of about 2 to about 7;
forging the pre-forged striking face insert into a forged striking face insert having a specified geometry or curvature;
heat-treating the forged striking face insert by multiplex aging comprising:
first-stage heating to a first temperature of about 380° C. to about 550° C. for a first time period of about 4 hours to about 16 hours;
and
second-stage heating to a second temperature of about 380° C. to about 600° C. for a second time period of about 4 hours to about 16 hours:
Mo
⁢
Eq
.
=
(
wt
⁢
%
⁢
Mo
)
+
0.2
(
wt
⁢
%
⁢
Ta
)
+
0.28
(
wt
⁢
%
⁢
Nb
)
+
0.4
(
wt
⁢
%
⁢
W
)
+
0.67
(
wt
⁢
%
⁢
V
)
+
1.25
(
wt
⁢
%
⁢
Cr
)
+
1.25
(
wt
⁢
%
⁢
Ni
)
+
1.7
(
wt
⁢
%
⁢
Mn
)
+
1.7
(
wt
⁢
%
⁢
Co
)
+
2.9
(
wt
⁢
%
⁢
Fe
)
Equation
1.1
Al
⁢
Eq
.
=
(
wt
⁢
%
⁢
Al
)
+
0.33
(
wt
⁢
%
⁢
Sn
)
+
0.16
(
wt
⁢
%
⁢
Zr
)
+
10
[
(
wt
⁢
%
⁢
O
)
.
Equation
2.1

141 more elements

Dependencies are inferred from the claim text.

Methods for enhancing strength of titanium alloys, golf club striking faces, and golf club heads

Life of this patent

Methods for enhancing strength of titanium alloys, golf club striking faces, and golf club heads

Life of this patent

Abstract

Claims20