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High-elasticity titanium alloy material for golf head

A golf head and titanium alloy technology, which is applied in the field of casting titanium alloy materials, can solve problems such as unreported, and achieve the effects of high elongation, good flow performance and crisp sound.

Active Publication Date: 2012-11-28
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There have been more than 10 years of research experience abroad on the sound quality of golf balls, but most of them are the effects of the volume and shape of the ball head. There are no reports on titanium alloy materials suitable for casting at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Sponge titanium, pure aluminum, pure copper, aluminum vanadium intermediate alloy is prepared titanium alloy according to the weight percentage of 85.0 Ti-9.75 Al-5.2 V-0.05Cu. Vacuum smelting is carried out in the furnace, and the smelted titanium alloy ingot is melted in the vacuum consumable electrode shell solidification furnace, and then poured into the golf head mold shell. The alloy content after pouring is: 85.1 Ti-9.6 Al-5.1 V-0.05Cu, and its mechanical properties, density and yield in the as-cast state are as follows:

[0017] The yield strength at room temperature is 840MPa, the tensile strength is 925MPa, the elongation is 4.8%, the reduction of area is 13.0%, the elastic modulus is 132GPa, the impact energy is 68J, the hardness is HRC33.3, and the density is 4.38 g / cm 3 , The pouring yield of the ball head is 98.5%.

Embodiment 2

[0019] Sponge titanium, pure aluminum, pure copper, and aluminum vanadium master alloy are prepared into titanium alloy according to the weight percentage of 83.0 Ti-8.3 Al-3.6 V-0.1Cu. Vacuum smelting is carried out in the furnace, and the smelted titanium alloy ingot is melted in the vacuum consumable electrode shell solidification furnace, and then poured into the golf head mold shell. The alloy content after pouring is: 87.8 Ti-8.3 Al-3.6 V-0.12Cu. The mechanical properties, density and yield in the cast state are as follows:

[0020] The yield strength at room temperature is 840MPa, the tensile strength is 920MPa, the elongation is 7.5%, the reduction of area is 18.0%, the elastic modulus is 131GPa, the impact energy is 13J, the hardness is HRC31.2, and the density is 4.38 g / cm 3 , The pouring yield of the ball head is 97.9%.

Embodiment 3

[0022] Sponge titanium, pure aluminum, pure copper, aluminum-vanadium intermediate alloy are formulated into titanium alloy according to the weight percentage of 91.5 Ti-6.0 Al-2.0 V-0.50 Cu. Vacuum smelting is carried out in the furnace, and the smelted titanium alloy ingot is melted in the vacuum consumable electrode shell solidification furnace, and then poured into the golf head mold shell. The alloy content after pouring is: 91.5 Ti-6.0 Al-1.9 V-0.51 Cu, and its mechanical properties, density and yield in the as-cast state are as follows:

[0023] The yield strength at room temperature is 690MPa, the tensile strength is 735MPa, the elongation is 8.0%, the reduction of area is 21.3%, the elastic modulus is 134GPa, the impact energy is 23J, the hardness is HRC31.5, and the density is 4.39 g / cm 3 , The pouring yield of the ball head is 93.5%.

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Abstract

The invention introduces a high-elasticity quaternary titanium alloy material for a golf head, which is characterized by adding alloy elements of Al, V and Cu to a titanium substrate so as to form a high-elasticity cast titanium alloy of which the formula is ZTi-7Al-4V-0.2Cu-(0-2.0) beta, wherein beta is one of Mo, Nb, Ta, Cr and Fe or a combination of any two of Mo, Nb, Ta, Cr and Fe. The titanium alloy provided by the invention has lower density and high extensibility, elastic modulus and impact ductility, wherein Rm>=700 MPa, Rp0.2>= 650 MPa, A>=4.5%, Z>=10%, E>=130 Gpa, and Ak>=50 J. The titanium alloy material has favorable flowing property and is suitable for being cast into titanium alloy thin-wall parts, and the yield of cast golf head thin-wall parts is approximate to 100%.

Description

technical field [0001] The invention relates to a casting titanium alloy material technology, in particular to a high-elastic titanium alloy material for golf heads. Background technique [0002] Titanium alloy has low density and high strength, and is widely used in the production of golf clubs, especially the production of clubs for long-distance driving. It is considered to be a high-quality ball head material. As a leisure and entertainment activity, golf has developed to this day, and golfers are not only pursuing performance, but more attention has been turned to the feeling and sound of hitting. Hitting sound is an important basis for golfers to judge whether they are playing well or not, and has become one of the key factors for golfers to choose golf equipment. The trend of golf heads is mainly lower material density, better fluidity, crisper and louder hitting sound quality, etc. [0003] There have been more than 10 years of research experience abroad on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00
Inventor 王孟光周洪强姜建伟陈志强周华
Owner LUOYANG SUNRUI TI PRECISION CASTING