KR19990048846A - Golf body head using copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition-reinforced alloy and its manufacturing method - Google Patents

Abstract

The present invention relates to a golf body head using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy, and a method of manufacturing the same, the object of the invention is high strength, high elasticity, low Young's modulus and beautiful color Golf body head made of casted parts by precision casting and plastic processed parts by precision cold forging by using copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition-reinforced alloy And to provide a method for producing the same.

The copper alloy of the present invention is composed of 1.0 to 20.0 wt% (% by weight) of nickel (Ni), 1.0 to 10.0 wt% (% by weight) of tin (Sn), and the remainder is composed of copper (Cu). The manufacturing method of the golf body head which consists of a melting material lamination loading process; Alloy process; Casting manufacturing process; Refractory coating process; Solid solution treatment process; Precision casting method of aging treatment process and melting material lamination process; Alloy process; Casting manufacturing process; Refractory coating process; Solid solution treatment process; Cold forging process; Final cold forging process; It is manufactured by a precision cold forging method consisting of an aging process.

Description

Golf body head using copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition-reinforced alloy and its manufacturing method

The present invention relates to a golf body head using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy and a method for manufacturing the same.

In general, copper alloys include copper (Cu) -nickel (Ni) -tin (Sn) ternary alloys, which exhibit high strength as a spinodal decomposition effect. A typical composition of this alloy is 9% by weight of nickel (Ni). And 6% of tin (Sn), with the remaining 85% consisting of copper (Cn).

Copper (85%)-Nickel (9%)-Tin (6%)-based ternary alloys have hardness of HRC above 35 and tensile strength above 1,200MPa through the optimum spinodal decomposition strengthening effect with proper processing and heat treatment. It is a high strength alloy that can be obtained.

In addition, the Young's modulus, one of the physical properties of the material, has a value as low as 12,000 to 15,000 MPa, and thus has very good spring elasticity.

On the other hand, this alloy is characterized by the clear light of the molten metal, good fluidity during casting to obtain a clean casting surface, and the color after casting is a very bright and light brown beautiful metal.

On the other hand, by controlling the content of nickel (Ni) and tin (Sn) as an additive element, there is an advantage that it is possible to control the mechanical modulus as well as the tensile strength and hardness, which are mechanical properties.

Therefore, high strength and low manufacturing cost are possible to replace Cu-Be, which is a high-strength spring alloy for electric parts or special purpose, and it is particularly advantageous that no toxic metal such as beryllium (Be) is used. Have.

In addition, copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition-reinforced alloys cannot be hot worked in a billet ingot state, so there is no example of manufacturing a plate, a bar, a wire, etc. by hot working.

However, some of the plate, bar and wire by powder metallurgy have been produced, but there is a problem that the manufacturing process is very expensive due to difficulty and high cost.

As a result, there are many problems in applying the hot forming method or the powder metallurgy method to the production of products that require cost reduction through mass production, such as golf body heads, which are sporting goods.

An object of the present invention for solving the above problems is a sporting goods using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy having high strength, high elasticity, low Young's modulus and beautiful color The present invention provides a golf body head made of a casting product by precision casting and a plastic processed product by precision cold forging, and a manufacturing method thereof.

An object of the present invention as described above is a copper alloy component for producing a golf head 1.0 to 20.0 wt% (weight percent) of nickel (Ni), 1.0 to 10.0 wt (weight percent) of tin (Sn), the rest Is achieved by providing a golf body head using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition hardening alloy, characterized in that it is composed of copper (Cu).

Another object of the present invention as described above in the precision casting method using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy for manufacturing a golf body head, first of the metal elements to be alloyed in advance After preparing the basis weight, lay the copper (Cu) on the bottom of the melting furnace, put a layer of nickel (Ni) on it, cover the copper (Cu) again, put the nickel (Ni) again and cover with copper (Cu). Charging with a molten material lamination process which is covered with a relatively thick copper (Cu) at the end; And a melting process in which both copper and nickel are dissolved by initiating melting; An alloying process in which the slag is removed when the temperature of the molten metal is gradually increased and the molten metal is about 1,250 ° C., the heating is stopped or a low heat source is supplied and tin is added to the alloy (Sn); A casting manufacturing process of manufacturing a casting by injecting molten metal into the head precision casting mold preheated to about 850 ° C. in advance if it is determined that the alloying elements are sufficiently dissolved and homogenized; The head casting thus prepared is a refractory coating step of applying a thin refractory agent to inhibit surface oxidation and drying well; And a solid solution treatment step of performing a solid solution treatment by quenching in liquid gas such as water cooling, oil cooling or liquid nitrogen after maintaining 0.5 to 10 hours at a temperature of 700 to 1,000 ° C .; The solution-cast head casting is then maintained at 300 to 500 ° C. for 1 to 30 hours and then aged or quenched by quenching or slow cooling to obtain copper (Cu) -nickel (Ni) -tin (Sn). It is achieved by providing a precision casting method for a golf body head using a spin-based reinforcement alloy.

Another object of the present invention as described above in the precision cold forging method of the head of the golf body using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition hardening alloy, first of the metal elements to be alloyed in advance After preparing the basis weight, lay the copper (Cu) on the bottom of the melting furnace properly, add a layer of nickel (Ni) on it, and again cover the appropriate amount of copper (Cu). Charging with a molten material lamination process which is covered with a relatively thick copper (Cu) at the end; And a melting process in which both copper and nickel are dissolved by initiating melting; An alloying process in which the slag is removed when the temperature of the molten metal is gradually increased and the molten metal is about 1,250 ° C., the heating is stopped or a low heat source is supplied and tin is added to the alloy (Sn); A casting manufacturing process of manufacturing a casting by injecting molten metal into a primary mold having a suitable shape when it is determined that the alloying elements are sufficiently dissolved and homogenized; And a solid solution treatment step of performing a solid solution treatment by quenching in liquid gas such as water cooling, oil cooling or liquid nitrogen after maintaining 0.5 to 10 hours at a temperature of 700 to 1,000 ° C .; The castings cast close to the solution-molded final shape are then manufactured by precision cold forging through cold forging over the first or several times, or by forging over several times by cutting rods or materials to achieve final cold precision forging. Final cold forging process; After the solution treatment, the cold forged head forged product is maintained for 1 to 30 hours again at 300 to 500 ° C, and then aged or quenched by quenching or slow cooling to obtain a copper (Cu) -nickel (Ni) -tin. It is achieved by providing a precision cold forging method for a golf head using a (Sn) spinodal decomposition hardening alloy.

1 is a shape of a golf body iron and wedge head manufactured according to the present invention,

2 is a shape of a golf body putter head manufactured according to the present invention.

Figure 1 is the shape of the golf body iron and wedge head manufactured in accordance with the present invention, Figure 2 shows the shape of the golf body putter head manufactured in accordance with the present invention, the alloy used in such a product in the present invention Iron, wedges, and putter heads were prepared by precision casting and precision cold forging of copper (85%)-nickel (9%)-tin (6%) ternary alloys, which are representative high-strength spinodal decomposition hardening alloys.

An embodiment of the present invention will be described as follows.

<Example 1>

The following is the method by precision casting.

First, prepare the metal elements to be alloyed in advance, and then prepare copper (Cu) on the bottom of the melting furnace, and apply a layer of nickel (Ni) on the bottom of it, cover copper (Cu) with an appropriate amount again, and then nickel (Ni) and copper (Cu) again. Charged with a repeated stacking method, but at the end covered with a relatively thick copper (Cu).

After dissolving and dissolving both copper and nickel, the temperature of the molten metal gradually increases to remove the slag when the molten temperature reaches about 1,250 ° C, and stops heating or supplies a very low heat source. Sn) is added and alloyed well.

When it is determined that the alloying elements are sufficiently dissolved and homogenized, the casting is prepared by injecting molten metal into the head precision casting mold preheated to about 850 ° C.

The head casting thus prepared is thinly coated with a refractory agent to prevent surface oxidation and dries well.

The solution is held at a temperature of 700 to 1,000 ° C. for 0.5 to 10 hours, and then rapidly cooled in a liquid gas such as water cooling, oil cooling, or liquid nitrogen to perform a solid solution treatment.

This solution heat-treated head casting for the Processing and kept 1-30 hours again at 300 ~ 500 ℃ by rapid cooling or slow cooling aging copper (Cu) - nickel (Ni) - (Cu _x Ni appears on the tin (Sn) based alloy _y ) _z High strength head castings obtained by the Sn-type spinoidal decomposition products are obtained.

The alloy component, solution treatment temperature and time, cold workability, aging treatment temperature and time are important factors for determining the material properties.

<Example 2>

The following is the method by precision cold forging.

First, prepare the metal elements to be alloyed in advance, and then prepare copper (Cu) on the bottom of the melting furnace, and apply a layer of nickel (Ni) on the bottom of it, cover copper (Cu) with an appropriate amount again, and then nickel (Ni) and copper (Cu) again. Charged with a repeated stacking method, but at the end covered with a relatively thick copper (Cu).

After dissolving and dissolving both copper and nickel, the temperature of the molten metal gradually increases to remove the slag when the molten temperature reaches about 1,250 ° C, and stops heating or supplies a very low heat source. Sn) is added and alloyed well.

When the alloying elements are sufficiently dissolved and homogenized, the casting is prepared by injecting molten metal into the primary mold having a suitable shape.

In order to introduce the concept of processing heat treatment, prior to cold forging, the material is held at a temperature of 700 to 1,000 ° C. for 0.5 to 10 hours and then rapidly cooled in a liquid gas such as water cooling, oil cooling, or liquid nitrogen to perform a solid solution treatment.

Then, cold forging is performed. However, for the final precision cold forging, the whole process may be prepared in various ways as follows.

In other words, in the final precision forging die, the casting of the entire process is cast close to the final shape so as to achieve smooth cold forging. It can be prepared by cutting and forging over several aberrations and manufacturing the final cold precision forging.

The cold forged head forging after the solution treatment is maintained for 1 to 30 hours at 300 ~ 500 ℃ again, and then quenched or quenched and aged for treatment. (Cu _x Ni _y ) _z Sn-type spinodal decomposition product to obtain a reinforced high-strength head forging.

The alloy component, cold workability, solution treatment temperature, and aging treatment temperature and time are important factors for determining the material properties.

Among the results obtained in the present invention, examples of physical property changes investigated in the casting process and the cold forging process are shown in Table 1 and Table 2 below.

In this case, the solution treatment is water-cooled after holding for 1 hour at 850 ° C, and the aging treatment is for 3 hours at each temperature.

Characteristic Changes According to Aging Treatment of Castings (Unit: MPa)

TABLE 1

Changes in Characteristics of Aging Cold Forgings by Aging (Unit: MPa)

TABLE 2

Castings or forgings after the final aging heat treatment are finished to be finished by desalting, machining, straightening, grinding and assembling.

As described above, the present invention was able to obtain a soft feel and a high flying distance when hitting a golf ball by applying to the manufacture of a golf body head which is a sporting goods by focusing on high strength, high elasticity, low Young's modulus and beautiful color among various features of the copper alloy. In addition, it is possible to increase the value of the product because it can receive a high-quality evaluation with beautiful colors, and the manufacturing method that the casting method by precision casting and the plastic processed product by precision cold forging are possible as the manufacturing method is various. There is this.

Claims (3)

The copper alloy used to produce the golf head is composed of 1.0 to 20.0 wt% (wt%) of nickel (Ni), 1.0 to 10.0 wt% (wt%) of tin (Sn), and the rest is composed of copper (Cu). A golf body head using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition hardening alloy. In the precision casting method using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy for the production of golf body head, first prepared by weighing the metal elements to be alloyed in advance and then copper ( Cu is added in a proper lamination, and a layer of nickel (Ni) is put on it, and copper (Cu) is covered again, and nickel (Ni) is again covered with copper (Cu). As a relatively thick covering melting material lamination step; And a melting process in which both copper and nickel are dissolved by initiating melting; An alloying process in which the slag is removed when the temperature of the molten metal is gradually increased to about 1,250 ° C., the heating is stopped, or a low heat source is supplied, and tin is added and alloyed well; A casting manufacturing process of manufacturing a casting by injecting molten metal into the head precision casting mold preheated to about 850 ° C. in advance if it is determined that the alloying elements are sufficiently dissolved and homogenized; The head casting thus prepared is a refractory coating step of applying a thin refractory agent to inhibit surface oxidation and drying well; And a solid solution treatment step of performing a solid solution treatment by quenching in liquid gas such as water cooling, oil cooling or liquid nitrogen after maintaining 0.5 to 10 hours at a temperature of 700 to 1,000 ° C .; The solution-cast head casting is then maintained at 300 to 500 ° C. for 1 to 30 hours and then aged or quenched by quenching or slow cooling to obtain copper (Cu) -nickel (Ni) -tin (Sn). Precision casting method of golf body head using spinodal decomposition strengthening alloy. In the precision cold forging method using a copper (Cu) -nickel (Ni) -tin (Sn) -based spinodal decomposition strengthening alloy for the production of a golf head, first prepared by weighing the metal elements to be alloyed in advance and then copper (Cu) is appropriately laid, a layer of nickel (Ni) on top of it, and then again covered with copper (Cu), and again covered with nickel (Ni) and covered with copper (Cu). Melting material lamination step of covering relatively thick; And a melting process in which both copper and nickel are dissolved by initiating melting; An alloying process in which the slag is removed when the temperature of the molten metal is gradually increased to about 1,250 ° C., the heating is stopped, or a low heat source is supplied, and tin is added and alloyed well; A casting manufacturing process of manufacturing a casting by injecting molten metal into a primary mold having a suitable shape when it is determined that the alloying elements are sufficiently dissolved and homogenized; And a solid solution treatment step of performing a solid solution treatment by quenching in liquid gas such as water cooling, oil cooling or liquid nitrogen after maintaining 0.5 to 10 hours at a temperature of 700 to 1,000 ° C .; And a cold forging process for forging the solution subjected to the solution treatment; The final casting of the casting forging process close to the final shape is made by cold forging over the first or several times through final cold forging, or the final cold precision forging by cutting the bar or square material for several steps. Cold precision forging process; After the solution treatment, the cold forged head forged product is maintained at 300 to 500 ° C for 1 to 30 hours, and then quenched or quenched to be aged for aging treatment, characterized in that the copper (Cu) -nickel (Ni)- Precision cold forging method of golf body head using tin (Sn) spinodal decomposition hardening alloy.