TW202010849A - Titanium alloy for casting a golf club head - Google Patents

Abstract

A titanium alloy for casting a golf club head is used to solve the problem of the poor formation rate of the vacuum centrifugal casting method in use of the conventional titanium alloy. The alloy includes 7.0-8.0 wt% of aluminum (Al), 4.0-5.5 wt% of vanadium (V), 0.5-1.5 wt% of chromium (Cr), 0.05-0.15 wt% of silicon (Si) and 0.05-0.3 wt% of iron (Fe). The others are titanium (Ti) and impurities.

Description

Titanium alloy for casting and forming golf club heads

The invention relates to a titanium alloy, in particular to a titanium alloy used for casting and forming a golf club head.

Generally speaking, in order to meet the user's lightweight requirements for golf club heads, workers can use titanium alloys to manufacture golf club heads. For example, conventional titanium alloys include aluminum, vanadium, chromium, silicon, and iron , Titanium and inevitable impurities, however, due to the poor fluidity of the conventional titanium alloy, when the golf club head is manufactured with the vacuum centrifugal casting method, the forming rate of the golf club head is only 40-60%, so There is still a need to provide a titanium alloy for casting and forming golf club heads to solve the above-mentioned problems.

In order to solve the aforementioned problems, the object of the present invention is to provide a titanium alloy for casting and forming a golf club head, which has a good golf club head forming rate.

The next object of the present invention is to provide a titanium alloy for casting and forming a golf club head, and a golf club head manufactured by using the titanium alloy has good tensile strength and yield strength.

The titanium alloy used for casting and forming golf club heads of the present invention comprises: 7.0-8.0% aluminum by weight, 4.0-5.5% vanadium, 0.5-1.5% chromium, 0.05-0.15% silicon , 0.05~0.3% iron, and the remaining proportion is titanium and inevitable impurities. In this way, the composition ratio of aluminum, vanadium, chromium, silicon, iron, and titanium enables the titanium alloy of the present invention to be used to cast and shape golf club heads when used in conjunction with vacuum centrifugal casting to produce golf club heads Good forming rate, and the golf club head obtained by manufacturing also has better mechanical properties (such as tensile strength and yield strength) than those made by the conventional titanium alloy, which is the effect of the present invention.

The titanium alloy used in the present invention to cast and shape a golf club head includes aluminum in an amount of 7.25 to 7.75% by weight. In this way, the fluidity of the titanium alloy used to cast and shape the golf club head can be improved by adjusting the aluminum content.

The titanium alloy used in the present invention to cast and shape a golf club head includes vanadium in a weight percentage of 4.25 to 4.75%. In this way, the strength of the titanium alloy used to cast and shape the golf club head can be improved by adjusting the vanadium content.

The titanium alloy used in the present invention for casting and forming golf club heads contains 1.0 to 1.5% of chromium by weight. In this way, the strength of the titanium alloy used to cast and shape the golf club head can be improved by adjusting the vanadium content.

The titanium alloy used in the present invention for casting and forming golf club heads contains 0.05% to 0.10% silicon by weight.

The titanium alloy used in the present invention for casting and forming golf club heads contains 0.05 to 0.08% iron by weight. In this way, the strength of the titanium alloy used to cast and shape the golf club head can be improved by adjusting the iron content.

The titanium alloy used for casting and forming a golf club head according to the present invention, wherein the golf club head manufactured from the titanium alloy has a tensile strength of 140 to 150 ksi, a yield strength of 128 to 138 ksi, and an elongation of 4 to 8%. In this way, the golf club head has a strength that meets the demand for hitting, which can increase the service life of the golf club head.

When the titanium alloy of the present invention is used to cast and shape a golf club head, when it is used to cast and shape a golf club head, the forming rate is 85 to 96%. In this way, excessive waste generated when casting the golf club head can be reduced, and thus the manufacturing cost of the golf club head can be reduced.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, which are described in detail as follows: The titanium alloy of the club head may include: a specific ratio of aluminum (Al), vanadium (V), chromium (Cr), silicon (silicon, Si), iron (iron, Fe), the remaining proportion Titanium (Ti) and inevitable impurities.

In detail, the titanium alloy used for casting the golf club head may contain 7.0% to 8.0% aluminum by weight, preferably may contain 7.25% to 7.75% aluminum by weight, so that it can be improved The fluidity of the titanium alloy used to cast the golf club head is worth noting that when the aluminum content is too high, the resulting golf club head will become brittle, so the aluminum content should not exceed 8.0%.

The titanium alloy used for casting and shaping the golf club head may contain 4.0 to 5.5% by weight of vanadium, preferably may contain 4.25 to 4.75% by weight of vanadium, so that the casting for casting can be improved The mechanical properties (such as tensile strength and yield strength) of the titanium alloy of the golf club head, but it should be noted that excessively high vanadium content will affect the forming rate of the golf club head, so the limited vanadium content should not exceed 5.5%.

The titanium alloy used for casting and forming golf club heads may contain 0.5 to 1.5% by weight of chromium, preferably may contain 1.0 to 1.5% by weight of chromium, so that the casting for casting can be improved The mechanical properties (such as tensile strength and yield strength) of the titanium alloy of the golf club head, but it should be noted that too high chromium content will affect the forming rate of the golf club head, so the chromium content should not exceed 1.5%.

The titanium alloy used to cast and shape the golf club head may contain 0.05% to 0.15% silicon by weight, preferably 0.05% to 0.10% silicon by weight, but it must be noted that when the silicon content is too high Will reduce the elongation and forming rate of the golf club head, so the limited silicon content should not exceed 0.10%.

The titanium alloy used for casting and shaping the golf club head may contain 0.05% to 0.3% iron by weight, preferably may contain 0.05% to 0.08% iron by weight, so that the casting for casting can be improved The mechanical properties (such as tensile strength and yield strength) of the titanium alloy of the golf club head, but it must be noted that too high iron content will affect the forming rate of the golf club head, so the limited iron content should not exceed 0.3%.

Therefore, when the above-mentioned titanium alloy used for casting and forming a golf club head is used to manufacture a golf club head by using the vacuum casting method, the golf club head forming rate can be improved and the titanium alloy can be cast to form The tensile strength and yield strength of the resulting golf club head are also superior to those obtained with conventional titanium alloys.

In order to verify that the titanium alloy used to cast and shape the golf club head mentioned above, and the vacuum casting method is used to obtain a golf club head, the golf club head forming rate can indeed be improved, and the golf club head also has For the best mechanical properties, the following tests were carried out: When the golf club head is made from the titanium alloy of the present invention (Group A1), the forming rate can reach 85-96%, while the golf ball is made from the conventional titanium alloy (Group A2) At the club head, the forming rate is only 40 to 60%.

The mechanical properties of the aforementioned golf club head are shown in Table 1.

As shown in Table 1, the tensile strength and yield strength of the golf club head made of the titanium alloy of the present invention are significantly higher than those made of the conventional titanium alloy, showing that the golf ball is formed by casting The composition ratio of aluminum, vanadium, chromium, silicon, iron and titanium contained in the titanium alloy of the club head can not only improve the forming rate of the golf club head, but also improve the mechanical properties of the golf club head obtained by manufacturing (for example : Tensile strength and yield strength).

In summary, the titanium alloy used for casting and forming golf club heads of the present invention, when combined with the vacuum centrifugal casting method to manufacture golf club heads, is composed of aluminum, vanadium, chromium, silicon, iron, and titanium. It can have a good forming rate, and the golf club head obtained by manufacturing also has better mechanical properties (such as tensile strength and yield strength) than those made by the conventional titanium alloy, which is the effect of the present invention.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with this art without departing from the spirit and scope of the present invention still makes various changes and modifications to the above-mentioned embodiments. The technical scope of the invention is protected, so the scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

Claims (8)

A titanium alloy used for casting and forming golf club heads, comprising: 7.0-8.0% aluminum, 4.0-5.5% vanadium, 0.5-1.5% chromium, 0.05-0.15% silicon, and 0.05-% by weight 0.3% iron, the rest is titanium and inevitable impurities. The titanium alloy used for casting and forming golf club heads as described in item 1 of the patent application scope, which contains aluminum in a weight percentage of 7.25~7.75%. The titanium alloy used for casting and forming golf club heads as described in item 1 of the patent application scope, which contains vanadium in a weight percentage of 4.25 to 4.75%. The titanium alloy used for casting and forming golf club heads as described in item 1 of the patent application scope, which contains 1.0 to 1.5% of chromium by weight. The titanium alloy used for casting and forming golf club heads as described in item 1 of the scope of the patent application contains 0.05% to 0.10% silicon by weight. The titanium alloy used for casting and forming golf club heads as described in item 1 of the patent application scope, which contains 0.05 to 0.08% iron by weight. The titanium alloy used for casting and forming a golf club head as described in item 1 of the patent application scope, wherein the tensile strength of the golf club head manufactured from the titanium alloy is 140-150 ksi and the yield strength is 128-138 ksi , And the elongation is 4~8%. The titanium alloy used for casting and forming a golf club head as described in item 1 of the scope of the patent application, wherein when the titanium alloy is cast to form a golf club head, the forming rate is 85 to 96%.