Golf club head having fast materials and methods for manufacturing

Abstract

A golf club head, comprising: a body having a front defining a front opening, a crown, a sole opposite the crown, a toe, a heel opposite the toes, and a skirt located between the crown and the sole and extending proximate the toe to proximate the heel. A faceplate secured to the front of the body and covering the front opening to form a hollow interior cavity. The faceplate comprises a rear surface, facing the hollow interior cavity, and a striking surface opposite the rear surface. The faceplates further comprise a plurality of grains having a grain structure that is substantially equiaxed and isotropic.

1 . A golf club head, comprising:
 a body having a front defining a front opening, a crown, a sole opposite the crown, a toe, a heel opposite the toe, and a skirt located between the crown and the sole and extending proximate the toe to proximate the heel;   a faceplate secured to the front of the body and covering the front opening to form a hollow interior cavity, comprising:
 a rear surface, facing the hollow interior cavity, and a striking surface opposite the rear surface; 
 a plurality of grains having a grain structure that is substantially equiaxed and isotropic. 
   
     
     
         2 . The golf club head of  claim 1 , wherein the faceplate comprises a porosity less than 3%. 
     
     
         3 . The golf club head of  claim 1 , wherein the faceplate comprises a porosity less than 2%. 
     
     
         4 . The golf club head of  claim 1 , wherein the faceplate comprises a porosity less than 1%. 
     
     
         5 . The golf club head of  claim 1 , wherein the faceplate comprises a porosity less than 0.5%. 
     
     
         6 . The golf club head of  claim 1 , wherein the grain structure comprises an average maximum grain size of less than 15 microns and an average minimum grain size of less than 5 microns. 
     
     
         7 . The golf club head of  claim 1 , wherein the grain structure comprises a grain size ratio between 0.75 and 1.00. 
     
     
         8 . The golf club head of  claim 1 , wherein the grain structure comprises a grain size ratio between 0.85 and 1.00. 
     
     
         9 . The golf club head of  claim 1 , wherein the grain structure comprises a grain size ratio between 0.95 and 1.00. 
     
     
         10 . The golf club head of  claim 1 , wherein the faceplate is not heat treated once formed. 
     
     
         11 . The golf club head of  claim 1 , wherein the faceplate further comprises a crystal structure having a uniform mixture of crystallographic directions. 
     
     
         12 . A golf club head, comprising:
 a body having a front defining a front opening, a crown, a sole opposite the crown, a toe, a heel opposite the toes, and a skirt located between the crown and the sole and extending proximate the toe to proximate the heel;   a faceplate secured to the front of the body and covering the front opening to form a hollow interior cavity, comprising:
 the faceplate comprises:
 a rear surface, facing the hollow interior cavity, and a striking surface opposite the rear surface; 
 a first metallic material forming the striking surface; 
 a second metallic different from the first metallic surface forming the rear surface;
 wherein the first metallic material and the second metallic material are metallurgically bonded and each comprises a grain structure that is substantially equiaxed and isotropic. 
 
 
   
     
     
         13 . The golf club head of  claim 12 , wherein the first metallic material and the second metallic material are different metals. 
     
     
         14 . The golf club head of  claim 12 , wherein the first metallic material is a first titanium alloy. 
     
     
         15 . The golf club head of  claim 14 , wherein the second metallic material is a second titanium alloy different from the first titanium alloy. 
     
     
         16 . The golf club head of  claim 12  wherein the first metallic material is a steel alloy. 
     
     
         17 . The golf club head of  claim 16 , wherein the second metallic material is a steel alloy. 
     
     
         18 . The golf club head of  claim 12 , wherein the first metallic material is a titanium alloy, and the second metallic material is a steel alloy.