Golf club head structure for casting in Fe-Mn-Al alloy

Abstract

A golf club head structure includes a striking plate member and a weight member connected thereto. The striking plate member is cast in Fe—Mn—Al alloy and integrally formed with a striking portion and a hosel portion so as to improve casting fluidity in the slurry shell and to eliminate contraction cavities. The weight member is made of high specific gravity material used to adjust a center of gravity of the golf club head.

1 . A golf club head comprising: 
 a striking plate member made of low casting fluidity metal, and integrally formed with a striking portion and a hosel portion to constitute a single member; and    a weight member securely connected to a rear surface of the striking portion of the striking plate member, and adapted to adjust a center of gravity of the entire golf club head;    wherein when the striking plate member is cast, the single member of the striking plate member suitable for low casting fluidity metal in slush casting that eliminates contraction cavities and slag-eyes remained in the striking plate member.    
   
   
       2 . The golf club head as defined in  claim 1 , wherein the low casting fluidity metal is Fe—Mn—Al alloy.  
   
   
       3 . The golf club head as defined in  claim 1 , wherein the striking plate member has a maximum thickness and a minimum thickness, and the ratio of the minimum thickness to the maximum thickness ranges between 0.56 and 1.00 that aids low casting fluidity of molten iron in a slurry shell for casting in low fluidity metal.  
   
   
       4 . The golf club head as defined in  claim 1 , wherein the striking plate member has a thickness smaller than 5 mm for enhancing casting fluidity in slush casting.  
   
   
       5 . The golf club head as defined in  claim 1 , wherein the striking plate member is formed in a slurry shell which has widths changing for corresponding to the thickness of the striking plate member.  
   
   
       6 . The golf club head as defined in  claim 1 , wherein the weight member forms an opening adapted to permit the deformation of the striking portion of the striking plate member therein while striking a golf ball.  
   
   
       7 . The golf club head as defined in  claim 1 , wherein the weight member is made of tungsten alloy or W—Fe—Ni alloy.  
   
   
       8 . The golf club head as defined in  claim 1 , wherein the striking plate member connects to the weight member by welding.  
   
   
       9 . The golf club head as defined in  claim 8 , wherein the golf club head employs nickel solder for welding the striking plate member to the weight member.  
   
   
       10 . The golf club head as defined in  claim 8 , wherein the welding process can be selected from a group consisting of gas tungsten arc welding, brazing, laser beam welding, plasma arc welding and ion beam welding.  
   
   
       11 . The golf club head as defined in  claim 1 , wherein the total weight of the weight member is greater than that of the striking plate member, and used to adjust a center of gravity of the golf club head.  
   
   
       12 . The golf club head as defined in  claim 1 , wherein the weight member consists of a top portion and a bottom portion greater than the top portion that considerably lowers a center of gravity of the club head body.  
   
   
       13 . The golf club head as defined in  claim 1 , wherein the striking plate member is shaped a spatula-like member.  
   
   
       14 . The golf club head as defined in  claim 1 , wherein the weight member is shaped an irregular ring member.