JP3158097B2 - Metallic glass molded product and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded product made of metallic glass and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, in order to produce a molded product made of metallic glass (amorphous alloy material), a metallic material is melted and rapidly solidified from a liquid state to obtain a quenched metal (alloy) powder.
There are various methods such as solidifying the obtained quenched metal powder into a predetermined shape at a crystallization temperature or lower to obtain a true density, and quenching and solidifying a molten metal or alloy to directly obtain a molded product made of metallic glass having a predetermined shape. Proposed.

[0003]

However, most of the molded products made of metallic glass obtained by these conventional methods have a small mass, for example, such that they can be used as a face of a golf club head. It was difficult to obtain a bulk material. For this reason, a method of obtaining a bulk metallic glass molded product by solidifying quenched powder has been attempted, but a bulk material having sufficient strength characteristics such as high strength and high toughness required for a golf club head face and the like has been attempted. No wood was obtained.

Further, as shown in FIG. 24A, a press die composed of an upper die a and a lower die b having fitting parts to be fitted to each other, ie, an upper die a and a lower die b. Is a method in which a molten metal c is pressed and quenched in a press mold 有 す る having vertical surfaces g and g respectively to the parting line to produce a metal glass molded article having a predetermined shape (for details, The present inventor has conducted experiments by repeating a great deal of trial and error with respect to a method of melting the metal material set in b using a high-energy heat source and pressing the obtained molten metal c into a predetermined shape. Was. However, when the molten metal c is pressed by the upper die a and the lower die b, as shown in FIGS.
The excess molten metal c flows between the vertical surface g of the lower mold b and the vertical surface g of the lower mold b (small gap d of the fitting portion), whereby the molten metal c entering the gap d rapidly The burr portion f is cooled and solidified, and the burr portion f causes various adverse effects. That is, the upper die a
And the vertical surfaces g, g of the lower mold b are damaged {causing "galling"), and when the molten metal c flows into the fitting portion (gap d), the mold cannot be closed. It was found that it was not possible to obtain a product e (molded product made of metallic glass) having a shape h and a predetermined thickness h. Further, it has been found that when the mold closing is poor, the mold itself wears out and the life is shortened.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a molded product made of metallic glass having excellent strength properties and a method of easily producing a molded product made of metallic glass. I do.

[0006]

In order to achieve the above-mentioned object, a metallic glass molded product according to the present invention comprises an upper mold having a smooth curved surface or flat surface and a lower mold having a cavity. A metal material is placed on the lower die of the press die having no fitting portion where the upper die and the lower die are fitted to each other, and the metal is formed using a high-energy heat source capable of melting the metal material. The material is melted, the upper mold and the lower mold are rocked relatively from an inclined shape and pressed so as to overlap each other in parallel to deform the molten metal having a melting point or more into a predetermined shape, simultaneously with the deformation or simultaneously. After the deformation, the molten metal is cooled at a critical cooling rate or higher to produce the predetermined shape. The golf club head is manufactured as a face body.

Further, a method of manufacturing a metallic glass molded product according to the present invention comprises an upper mold having a smooth curved surface or a flat surface and a lower mold having a cavity, and the upper mold and the lower mold are mutually fitted. A metal material is placed on the lower mold of the press mold having no fitting portion to be fitted, and the metal material is melted using a high energy heat source capable of melting the metal material, and the upper mold and the lower mold are melted. And presses so as to oscillate relative to each other from the inclined shape and superimpose them in parallel to each other to deform the molten metal having a melting point or more into a predetermined shape, and simultaneously or after the deformation, the molten metal is cooled at a critical cooling rate or more. It is cooled to produce the above-mentioned predetermined shape.

[0008] Also, a press die comprising an upper die having a smooth curved surface or a flat surface and a lower die having a cavity portion and having no fitting portion in which the upper die and the lower die are fitted to each other. A metal material is placed in a lower mold, and the metal material is melted using a high-energy heat source capable of melting the metal material, and the upper mold is swung from an inclined shape with respect to the lower mold to be parallel to each other. The molten metal having a melting point or higher is deformed into a predetermined shape by pressing so as to overlap with each other, and the molten metal is cooled at a critical cooling rate or higher at the same time as or after the deformation to produce the predetermined shape.

The cavity has a first concave portion for disposing and dissolving a shallow material for placing a metal material and stopping the obtained molten metal, and the upper mold and the lower mold are inclined with respect to each other. From the first when overlapping and pressing
It has a second concave portion for final molding for the molten metal raised on the concave portion to flow into and mold into a predetermined shape.

The relative inclination angle θ between the upper die and the lower die
Is 1 ° to 15 °. The second concave portion of the lower die has a curved surface or a flat surface having a radius of curvature of 5 inches or more, and the upper die is a smooth surface having a curved surface or a flat surface having a radius of curvature of 5 inches or more. The golf club head is manufactured as a face body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIG. 1 shows a production apparatus F for producing a metallic glass molded article of the present invention. The metallic glass molded article produced by this producing apparatus F is, for example, shown in FIGS. It is used as the face body 1 of the wood type golf club head 2 and the face body 1 of the iron type golf club head 2 as shown. The metal glass molded product of the present invention is characterized by being manufactured by the metal glass manufacturing method described below.

First, the manufacturing apparatus F will be described. As shown in FIG. 1, the manufacturing apparatus F is installed in a press die 6 composed of an upper mold 4 and a lower mold 5 and a cavity 7 of the lower mold 5. An arc electrode (tungsten electrode) 8 for arc melting a metal material, and a cooling water supply device 9 for circulating cold water to the upper mold 4 and lower mold 5 of the press die 6 and the arc electrode 8.
And a vacuum chamber 10 for accommodating the press die 6 and the arc electrode 8, a lower die moving mechanism 11 driven by a motor 13 and moving the lower die 5 in a horizontal direction, and driven by a motor 14. And an upper die moving mechanism 12 for moving the upper die 4 in the vertical direction.

The lower die moving mechanism 11 is not particularly limited, and a conventionally known translation mechanism or reciprocating mechanism can be used. For example, a drive screw using a ball screw and a traveling nut or an air cylinder can be used. A hydraulic mechanism such as a pneumatic mechanism or a hydraulic cylinder can be suitably used. Also, the upper die moving mechanism 12 is not particularly limited, and may be any conventionally known press die mechanism, such as a hydraulic mechanism or a pneumatic mechanism. Further, other cooling medium (for example, refrigerant gas) may be used other than the cooling water.

The arc electrode 8 is connected to an arc power supply 15 and is arranged at a slight inclination to the depth of the cavity 7 of the lower mold 5. The X-axis, Y-axis and Z-axis are driven by a stepping motor 16. It is configured to be adjustable in the axial direction. Further, the position of the metal material is measured by the semiconductor laser sensor 17 in order to keep the distance (Z-axis direction) between the metal material on the lower die 5 and the arc electrode 8 constant. The movement may be automatically controlled. This is because if the gap between the arc electrode 8 and the metal material is not constant, the arc becomes unstable and the melting temperature varies. Further, a cooling gas (for example, Ar gas) injection port may be provided in the vicinity of the arc generating portion of the arc electrode 8, and a cooling gas may be injected from a gas supply source (gas cylinder) 18 to promote rapid cooling after heating. .

The vacuum chamber 10 has a water cooling jacket structure made of SUS. An oil diffusion vacuum pump (diffusion pump) 19 and an oil rotary vacuum pump (rotary pump) 20 are connected to each other by a vacuum exhaust port to evacuate. The gas supply source (gas cylinder) 21 is connected by an argon gas inlet so that replacement with an inert gas is possible. Further, the cooling water supply device 9 cools the circulation return cooling water with the coolant, and then supplies the cooling water to the upper mold 4, the lower mold 5, and the arc electrode 8 again as cooling water.

As shown in FIGS. 2 to 5 and FIG.
The press die 6 has a shape having no fitting portion. More specifically, the upper mold 4 has a smooth curved surface 72 having a radius of curvature of 5 inches or more. In the present embodiment, the curved surface 72 is a convex curved surface 23, and the convex curved surface portion 22 which is a part of the convex curved surface 23.
A parting surface 22 composed of b and a plane portion 22a is formed. Further, a pair of tapered knock pins 44 is provided on the flat portion 22a of the parting surface 22 on one of the left and right ends of the upper die 4 (the right end side in the illustrated example) so as to protrude downward. The curved surface 72 may be a smooth concave curved surface or a flat surface having a radius of curvature of 5 inches or more (not shown). In addition, the portion constituting the convex curved surface portion 22b is
It may be a concave portion or a surface portion composed of a flat surface (not shown).

The lower die 5 has a parting surface 24 composed of a concave curved surface portion 24b and a flat surface portion 24a overlapping the parting surface 22 of the upper die 4, and has a first concave portion 7a and a second concave portion 7b.
Is provided. Also, the parting surface 24 on one side of the left and right ends of the lower mold 5 (the right end side in the illustrated example)
Bushs 45, 45 for inserting and positioning the above-mentioned taper knock pins 44, 44 of the upper mold 4 when the mold is closed.
Is provided. The shallow first concave portion 7a of the cavity portion 7 is provided for disposing a material for disposing the metal material and stopping the obtained molten metal. Are located. The second concave portion 7b is used for final molding for molding a metal glass molded product having a predetermined shape by flowing molten metal raised on the first concave portion 7a, and has a concave curved surface having a radius of curvature of 5 inches to 100 inches. In the present embodiment, the shape is formed to be the face shape (final shape) of the golf club head in plan view. The portion constituting the concave curved surface portion 24b may be a smooth concave curved surface or a flat surface having a radius of curvature of 5 inches or more (not shown).

The first concave portion 7a is disposed at a lower position in the center of the lower mold 5 in the left and right direction, and the second concave portion 7b is disposed at a position adjacent to the first concave portion 7a and opposite to the bush 45. ing.

As shown in FIGS. 1 and 6, reference numeral 46 denotes an elevating rod of the upper die moving mechanism 12, and a lower end of the elevating rod 46 is attached to hold the upper die 4 of the press die 6. Element
47 is fixed horizontally. The upper die 4 is attached to the lower surface of the horizontal attachment member 47 in an inclined manner. Specifically, the right end (taper knock pin 44 side) of the upper die 4 and the right end of the mounting member 47 are connected by a resilient member 48 (for example, a coil spring), and the left end of the upper die 4 and the mounting member 47 are connected.
The upper die 4 is connected to the left end of the upper die 4 by means of a resilient member 48 with its taper knock pin 44 facing downward via rocking pieces 49, 49 (only one of which is shown in the figure) and supporting shafts 50, 50. It is in an inclined state by being elastically urged. At this time, the lower die 5 is horizontal like the mounting member 47, and the relative inclination angle θ─── between the upper die 4 and the lower die 5, that is, the upper die 4 with respect to the lower die 5 (the mounting member 47). The angle of inclination θ─── is 1 ° ~ 15
°.

A method of manufacturing a metallic glass molded article using the manufacturing apparatus F will be described first.
As shown in the figure, the lower mold 5 set below the upper mold 4
The metal material 26 is placed in the first concave portion 7a of the cavity portion 7 of FIG. In addition, as this metal material 26, Ln-Al-T
Ternary alloys such as M, Mg-Ln-TM, Zr-Al-TM, Zr-Al-Ni-Cu, Zr-Ti-Al-Ni
-Cu, Zr-Nb-Al-Ni-Cu and other alloys composed of almost any combination of elements, including quaternary or higher alloys, such as Zr-based alloys. It is preferable to use the alloy in the form of powder or pellets so that rapid melting by the electrode 8 and the arc power supply 15) is easier. However, if rapid melting is possible, the alloy may be in the form of a wire, band, rod, or block. May be used.

On the other hand, the position of the arc electrode 8 in the X-axis, Y-axis and Z-axis directions is adjusted by a laser sensor 17 and a stepping motor 16 via an adapter 8a, and a metal material is formed.
26 (in the Z-axis direction) is set to a predetermined value.

Further, the interior of the chamber 10 is evacuated to a high vacuum, for example, 5 × by using an oil diffusion vacuum pump 19 and an oil rotary vacuum pump 20.
After setting the pressure to 10 ⁻⁴ Pa (using a liquid nitrogen trap), an Ar gas is supplied from an Ar gas supply source 21 so that the inside of the chamber 10 is Ar.
Replace with gas. The upper mold 4, the lower mold 5, and the arc electrode 8 are cooled by cooling water supplied from a cooling water supply device 9.

After the above preparations are completed, the lower mold moving mechanism 11 is driven by the motor 13 to move the lower mold 5 in the horizontal direction (the direction of arrow A) as shown in FIGS. 1, 6 and 7. And stop at a position below the arc electrode 8. And arc power
Turning on 15 generates a plasma arc 27 between the tip of the arc electrode 8 and the metal material 26 to completely melt the metal material 26 to form a molten metal 28. At this time, molten metal
28 is stopped at the first concave portion 7a of the cavity portion 7 and effectively receives the plasma arc 27.

Thereafter, as shown in FIG. 1 and FIGS.
The arc power supply 15 is turned off to extinguish the plasma arc 27.
Then, the lower die 5 is immediately moved to a position below the upper die 4 (in the direction of arrow B), and the motor 14 and the upper die moving mechanism 12 are moved.
The upper mold 4 is lowered (in the direction of arrow C) to press-mold the molten metal 28 having the obtained melting point or higher to deform it into a predetermined shape. Simultaneously with or after the deformation, the molten metal 28 is cooled by the press die 6 being cooled at a critical cooling rate or higher,
As a result, the molten metal 28 is rapidly solidified to produce a molded product 3 of metallic glass having a predetermined shape. The molded product 3 made of a metallic glass having a predetermined shape is a semi-finished product having a burr portion and the like.

Here, the mold closing operation of the upper mold 4 and the lower mold 5 will be described in detail. As shown in FIG. 10A, the upper mold 4 descends toward the lower mold 5 while being inclined. . Then, as shown in FIG. 8 and FIG.
The taper knock pins 44, 44 are the bushes 45, 45 of the lower die 5.
It is positioned by fitting into. Then, the upper die 4 pressed by the mounting member 47 swings from the inclined shape with respect to the lower die 5 so as to overlap with each other in a parallel manner and press the molten metal 28 at once (in a rolled shape). Then, the molten metal 28 raised on the first concave portion 7a flows into the second concave portion 7b, and the upper mold 4 and the lower mold 5 are completely overlapped and closed as shown in FIGS. Then, the molten metal 28 quenched in the second concave portion 7b becomes a molded product 3 made of metallic glass having a final shape.

FIGS. 11 and 12 show a state in which the molten metal on the first concave portion 7a of the cavity 7 flows and spreads during molding and is cooled and solidified to form a molded product 3 made of metallic glass having a predetermined shape. Is shown. The convex surface 23 (as described above)
By tilting and swinging the upper die 4 so as to approach the second concave portion 7b side from the concave portion 7a side, the first concave portion 7a
The molten metal having a melting point equal to or higher than the raised melting point can be poured into the second concave portion 7b at a stretch, and the amount of the molten metal flowing to the opposite side (the bush 45 side) from the second concave portion 7b can be reduced. At this time, the effect is exhibited by setting the inclination angle θ of the upper mold 4 with respect to the lower mold 5 to 1 ° to 15 °. If the inclination angle θ is less than 1 °, the amount of flow to the side opposite to the second concave portion 7b increases, which is wasteful, and the amount of flow into the second concave portion 7b decreases, which may result in defective products. There is. Further, even if the inclination angle θ is larger than 15 °, the above-described effect is not improved. It is preferable that the upper mold 4 has a smooth convex curved surface 23 to a flat surface 41 in order to smoothly flow the molten metal 28 having a melting point not lower than the melting point raised on the first concave portion 7a into the second concave portion 7b. In particular, a smooth convex surface 23
It is desirable to have

Further, since the press die 6 does not have a fitting portion, the flow of the molten metal is not stopped during the pressurization by the press die 6, thereby preventing the closing of the die. Thus, it is possible to reliably obtain a molded product 3 made of metallic glass having a predetermined thickness. Further, the mold 6 is not damaged by the burr portion 29, and the mold 6 can be used for a long time. Note that, of the formed metallic glass molded product 3, a portion other than the product portion (final shape portion 51) molded by the second concave portion 7 b for final molding becomes the burr portion 29.

As described above, the thin plate-shaped metallic glass molded product 3 (final shape portion 51) manufactured by the above-described manufacturing method is one in which molten metal having a melting point or higher is deformed at a stretch into a predetermined shape and cooled. Because of this, a molded product made of metallic glass that is uniformly cooled and solidified, has no crystal phase due to heterogeneous solidification or heterogeneous nucleation, and has excellent strength characteristics such as high strength and high toughness without defects such as hot junctions (Amorphous alloy material). That is, after the metal material is melted, the obtained molten metal having a melting point or higher can be pressed and molded without overlapping cooling interfaces having a melting point of the molten metal or lower.

In other words, as described with reference to FIG. 7, the metal material 26 is in contact with the first concave portion 7a of the lower die 5. Normally, the lower mold 5 is cooled so as not to cause melting and damage in the step of melting the metal material 26, and the bottom side of the metal material 26 in contact with the first concave portion 7a loses heat. It is conceivable that the part (the bottom surface side) that did not dissolve sufficiently and was in contact with the first concave portion 7a did not form an amorphous phase even after press molding and remained as a crystalline phase. However, in the method of manufacturing a molded product made of metallic glass of the present invention, the molten metal 28 in the portion in contact with the first concave portion 7a of the lower mold 5 is left, and the molten metal 28 in the raised portion is immediately poured into the second concave portion 7b. Because of the rapid cooling, a molded product 3 (final shape portion 51) made of metallic glass having no crystal phase can be produced.

FIG. 13A shows a molded product 3 (semi-finished product) made of metallic glass in a state where it is cut out from the press die 6.
In the present embodiment, the case where the molded article 3 is the face body 1 (semi-finished product) of the golf club head is illustrated. Since the face body 1 has a burr portion 29 around the final shape portion 51, the burr portion 29 is cut and cut as shown in FIG. To finish. 1a is the face surface of the face body 1.

At this time, as described with reference to FIGS.
Since the radius of curvature of the second concave portion 7b of the lower die 5 forming the face surface 1a is 5 inches to 100 inches, and when used for a wood type club, the radius of curvature of the upper die 4 is 5 inches or more. The face body 1 made of metallic glass as the final shape shown in (b) does not require any post-processing for adjusting the bulge. In addition, when used for a wood type club, if the radius of curvature of the lower mold 5 is less than 5 inches, post-processing such as cutting and polishing to reduce the bulge of the face plate is required, and if it is larger than 100 inches, Post-processing is required to attach the bulge. In the case of the iron club face body 1, a planar shape is also used. Therefore, the second
The shape of the concave portion 7b may be a radius of curvature in the range of a curved surface or a planar surface of 5 inches or more.

FIGS. 14 and 15 show a case where a hollow wood type (metal head) golf club head 2 is manufactured using the above-mentioned face body 1 made of metallic glass. More specifically, the head 2 includes a head body 30 made of titanium, a titanium alloy, stainless steel, or the like, and a fitting recess provided on the face surface 1a side of the head body 30.
It comprises a metallic glass face body 1 fitted to 31. 32 is a sole, 33 is a side part, 34 is a crown part, and 35 is a neck part. The face body 1 is a head body.
It is fitted into the fitting recess 31 of the fitting 30 and is fixed by adhesive, welding, caulking, press-fitting (at the time of fitting), or the like. Although FIG. 15 shows a case where the bottom surface of the fitting concave portion 31 is connected to the whole, this is not always necessary, and the central portion may be hollow (penetrated).

FIGS. 16 and 17 show a case in which a metal iron type golf club head 2 is manufactured by using a metal glass face body 1. The head 2 is a head body made of titanium, a titanium alloy, stainless steel, or the like.
36, and a face body 1 fitted in a fitting recess 37 provided on the face surface 1a side of the head main body 36, 38 is a sole, 39 is a back face, and 40 is a neck. The face body 1 is fitted into the fitting concave portion 37 of the head main body 36 (as in the case described above), and is fixed by an adhesive, welding, caulking, press fitting (at the time of fitting), or the like. Although FIG. 17 shows a case where the bottom surface of the fitting concave portion 37 is connected to the whole, it is not always necessary, and the central portion may be hollow (penetrated).

The golf club provided with the club head 2 having the metallic glass face body 1 obtained as described above does not vary in characteristics, has excellent strength characteristics such as high strength and high toughness, and has a high yield. Well reduced manufacturing costs,
Using a metal glass face that is manufactured stably, it can maintain reproducibility stably even when the golf ball hits the face, resulting in flight distance, directionality, impact properties, strength, toughness, etc. Excellent characteristics can be exhibited.

Next, a press die 6 having another shape will be described. In the case of the press die 6 shown in FIG. 18, the cavity 7 of the lower die 5 has a flat first concave portion 7a.
And the upper mold 4 is a smooth surface having a flat surface 41.

FIGS. 19 to 23 show another rocking and pressing mechanism for rocking and pressing (closing the mold) the upper mold 4 held in an inclined manner against the lower mold 5. 19, the left end of the upper die 4 is swingably connected to the left end of the mounting member 47 via the swinging piece 49 and the support shafts 50, 50, and the telescopic cylinder 52 is connected to the right end of the mounting member 47. And the rod 52a is a mounting member.
It is attached to the upper die 4 through 47. And
The upper die 4 is adjusted to a predetermined inclination angle by adjusting the expansion and contraction of the rod 52a. When closing the mold, the shortening speed of the rod 52a and the lowering speed of the upper mold 4 are made the same in order to swing the upper mold 4 from the inclined shape so as to overlap the lower mold 5 in parallel.

FIG. 20 shows a mounting mechanism in which a mounting piece 56 attached to the upper surface of the upper die 4 is pivotably attached to the lower end of a rod 54a of the upper die moving mechanism 12 (for example, the telescopic cylinder 54). Type 4
A weight 55 is attached to the right end on the side of the taper knock pin 44, and the center of gravity of the upper mold 4 is inclined toward the right end. In the lifting state of the upper die 4, for example, the mounting pieces 56 of the upper die 4 are maintained so that the upper die 4 can maintain a predetermined inclination angle.
It is also preferable to attach a stopper piece to the end so as to abut the tip 67 of the rod 54a.

FIG. 21A shows a lower mold 5 having a corner near the bush 45 and a corner near the taper knock pin 44 of the upper mold 4 swingably connected via a hinge 57. The upper die 4 can swing integrally with the swing shaft 57a of the hinge portion 57. Further, the swing shaft 57a is connected to a swing drive mechanism 58 (shown by a phantom line), and the swing drive mechanism 58 is driven to rotate the swing shaft 57a in the forward and reverse directions to move the upper die 4 to ( Arrow D
(In the direction or the direction of arrow F), for example, by 180 °. Further, as shown in FIG. 3 (b), an elevating and lowering pressing mechanism 59 is provided for pressing the upper die 4 with the lowered pressing plate 59a when closing the die. Note that, as the swing drive mechanism 58, for example, a rotary cylinder or a swing motor is used.

Next, FIG. 22 (a) shows an upper arm 4 and a lower arm 5 which are swingably connected by a hinge portion 60 and a swing arm projecting from a part of the upper mold 4. 61, telescopic cylinder
The rod 62 a has a distal end pivotally connected via a pivot shaft 63. Note that the other end of the telescopic cylinder 62 itself is pivotally attached to a fixed member (not shown) so as to be swingable. When the mold is closed, the swing arm 61 is pulled toward the cylinder 62 by shortening and driving the telescopic cylinder 62, and the upper mold 4 is rotated around the shaft 60a of the hinge 60, as shown in FIG. And it becomes parallel from the inclined shape and overlaps with the lower mold 5.
At this time, the telescopic cylinder 62 also has the function of pressing the upper mold 4. If the telescopic cylinder 62 is extended, the upper mold 4
Swings in the opening direction.

FIG. 23 shows a taper knock pin of the upper die 4 on the lower end of the rod 64a of the fixed first telescopic cylinder 64.
Attaching the mounting piece 66 attached to the 44 side (right end),
A mounting piece 66 attached to the left end of the upper die 4 is pivotally attached to the lower end of the rod 65a of the second telescopic cylinder 65 that can swing. When the upper die 4 is lifted, the first and second telescopic cylinders 64 and 65 are adjusted to expand and contract to maintain the upper die 4 at a predetermined inclination angle. When closing the mold, the first and second telescopic cylinders 64 and 65 are extended at the same speed to lower the upper mold 4 while maintaining this inclination angle, and the upper mold 4 is inclined with respect to the lower mold 5. The first and second telescopic cylinders 64 and 65 are controlled so as to be swung from the shape and overlap in parallel.

As described above, in these press dies 6, the upper die 4 and the lower die 5 need only be relatively inclined. That is, when the upper mold 4 is raised, the lower mold 5 is held in an inclined state and the upper mold 4 is held in a horizontal state. Then, the upper mold 4 is lowered to press the lower mold 5, whereby the lower mold 5 swings from the inclined shape to become horizontal and overlaps with the upper mold 4 to close the mold.

The present invention is not limited to the above-described embodiment. For example, in a method of manufacturing a molded product made of metallic glass, a molded product 3 (face body 1) made of metallic glass is produced at one time. The number may be one or more than one, and the predetermined shape according to the present invention may be one or a plurality of continuous shapes, and may be a completely completed molded product 3. Not only the (face body 1) but also a shape leaving a simple process, for example, a finish process such as deburring may be used.

The high-energy heat source for dissolving the metal material is not particularly limited. For example, typical examples include a high-frequency heat source, an arc heat source, a plasma heat source, an electron beam, a laser beam, and the like. These heat sources are supplied to the lower die 5 of the press die 6 by one.
The number may be one or more.

[0045]

Since the present invention is configured as described above, the following effects can be obtained.

According to the first aspect of the present invention, the molded article made of metallic glass of the present invention has excellent strength, toughness, high impact resistance and the like, and is a bulk material having a relatively large mass. It can be widely used for structural materials requiring high mechanical strength.
In addition, a molded product made of metal glass having a relatively long length in the horizontal direction can be obtained.

According to the second aspect, the bulk face body 1 excellent in high strength, high toughness, high impact resistance and the like can be obtained. In particular, the face surface 1a colliding with a golf ball
The golf club head provided with the face body 1 can stably maintain reproducibility even in the event of a collision between a golf ball and a face. As a result, the flight distance and directionality can be improved. In addition to exhibiting excellent characteristics such as impact characteristics, strength, and toughness, uniform characteristics can be exhibited without variation in characteristics.

According to the third or fourth aspect, a molten metal having a melting point or higher can be rapidly transformed into a predetermined shape and rapidly cooled and solidified to produce a metallic glass molded product. Metallic glass molded product (amorphous alloy material) that is cooled and solidified, has no crystal phase due to heterogeneous solidification and heterogeneous nucleation, and has excellent strength characteristics such as high strength and high toughness without defects such as hot junctions. ) Can be obtained. Also,
A molded product made of metallic glass can be produced with a simple process at a stretch with good reproducibility.

Further, since the press die 6 does not have a fitting portion, excess molten metal flows into the gap between the upper die and the lower die during molding (as in the conventional case) and solidifies by cooling. This prevents the mold from being damaged or the molten metal from flowing into the damaged gaps ("galling" can be prevented) and the mold cannot be closed. Therefore, a molded product made of metallic glass having a predetermined shape and a predetermined thickness can be obtained, and the mold can be used for a long period of time. Further, at the time of press molding, the cavity 7
Since the upper molten metal can be pressed and deformed by the upper mold 4 and the lower mold 5 in a rolled shape, a metal glass molded product having a relatively long horizontal length can be obtained.

(According to claim 4) A mechanism (oscillating pressing mechanism) for holding the upper mold 4 in an inclined manner and swinging and pressing against the lower mold 5 is relatively easily manufactured. be able to.

According to the fifth aspect, when the metal material is melted by the first concave portion 7a of the cavity portion 7, the obtained molten metal is stored in the first concave portion 7a, and the high-energy heat source is effectively formed. Heat energy from That is, molten metal having a melting point or higher does not flow out of the first concave portion 7a before closing the mold. Then, the portion of the molten metal that rises above the first concave portion 7a by closing the mold is removed from the second concave portion 7b.
It is quickly cooled by flowing into the
The molded product made of metallic glass molded in the concave portion 7b does not contain a crystal phase due to uneven solidification or uneven nucleation, and has excellent strength characteristics such as high strength and high toughness without defects such as hot junctions. Becomes In other words, the portion of the molten metal in contact with the first concave portion 7a is considered to become a crystalline phase after molding because it is not sufficiently melted because heat is taken by the lower mold, but a raised portion not in contact with the first concave portion 7a. Is molded in the second concave portion 7b, so that the metallic glass molded product in the final shape is an amorphous alloy material having no crystal phase and having high strength characteristics.

According to the sixth aspect, at the time of press molding, molten metal having a melting point higher than the melting point raised on the first concave portion 7a can be quickly poured into the second concave portion 7b.
The amount of molten metal flowing to the side opposite to the second concave portion 7b can be reduced, and the burr portion 29 after molding can be reduced.

According to a seventh aspect of the present invention, there is provided a molded product (final shape portion) made of metallic glass having a gently curved surface or a flat surface.
Since 51) can be formed, if a molded product made of metallic glass is produced, for example, as the face body 1 of a golf club head, post-processing such as polishing and cutting for adjusting the bulge of the face body 1 is unnecessary. Becomes

The face body 1 of the golf club head 2 having high strength, high toughness, and high impact resistance.
Can be produced and obtained at a stretch with simple steps with good reproducibility.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view of a manufacturing apparatus for manufacturing a molded product made of metallic glass of the present invention.

FIG. 2 is a front view showing an upper die of a press die.

FIG. 3 is a bottom view showing an upper die of a press die.

FIG. 4 is a front view showing a lower die of a press die.

FIG. 5 is a plan view showing a lower die of a press die.

FIG. 6 is a cross-sectional front view showing a first swing pressing mechanism that holds the upper mold in an inclined shape.

FIG. 7 is an explanatory view showing a state in which a molten metal is formed.

FIG. 8 is an explanatory view showing a state where a molten metal is pressed by a press die.

FIG. 9 is an explanatory view showing a closed state of a press die.

FIG. 10 is an operation explanatory view of press molding.

FIG. 11 is an enlarged sectional view of a main part showing a closed state of the press die.

FIG. 12 is a plan view showing a metallic glass molded product after press molding.

FIG. 13 is a sectional view showing a molded product made of a metallic glass of the present invention.

FIG. 14 is a front view showing a wood type golf club head.

FIG. 15 is a sectional side view showing a wood type golf club head.

FIG. 16 is a front view showing an iron type golf club head.

FIG. 17 is a cross-sectional side view showing an iron-type golf club head.

FIG. 18 is a sectional front view showing another shape of the press die.

FIG. 19 is a cross-sectional front view illustrating a second swing pressing mechanism that holds the upper mold in an inclined shape.

FIG. 20 is a sectional front view showing a third swing pressing mechanism.

FIG. 21 is a sectional front view showing a fourth swing pressing mechanism.

FIG. 22 is a sectional front view showing a fifth swing pressing mechanism.

FIG. 23 is a sectional front view showing a sixth swing pressing mechanism.

FIG. 24 is an operation explanatory view showing a conventional example.

FIG. 25 is an enlarged sectional view of a main part showing an incompletely closed state of the press die.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Face body 2 Golf club head 4 Upper mold 5 Lower mold 6 Press mold 7 Cavity part 7a First concave part 7b Second concave part 26 Metal material 28 Molten metal 41 Flat surface 72 Curved surface θ Inclination angle

────────────────────────────────────────────────── ─── Continuing on the front page (51) Int.Cl. ⁷ Identification symbol FI B22D 27/09 B22D 27/09 A (72) Inventor Tetsuo Yamaguchi 3-4 Ishizaicho, Nishinomiya City, Hyogo Prefecture (72) Inventor Inoue Akihisa 35, Kawauchi-moto-Hasekura, Aoba-ku, Sendai-shi, Miyagi 11-806 Kawauchi Residence (56) References JP-A-11-104810 (JP, A) JP-A-11-47321 (JP, A) JP-A-11-47320 (JP, A) JP-A-10-216920 (JP, A) JP-A-3-204160 (JP, A) JP-A-59-133964 (JP, A) JP-A-9-135930 (JP, A) JP 2000-61614 (JP, A) JP-A-11-226696 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 27/08 A63B 53/04 B22D 27/09 B22D 18 / 02

Claims (8)

(57) [Claims] 1. An upper mold 4 having a smooth curved surface 72 to a flat surface 41.
And a lower mold 5 having a cavity 7 and the upper mold 4
The metal material 26 is placed on the lower die 5 of the press die 6 having no fitting portion where the lower die 5 and the lower die 5 are fitted to each other, and a high-energy heat source capable of melting the metal material 26 is used. Then, the metal material 26 is melted, and the upper mold 4 and the lower mold 5 are rocked relatively from an inclined shape and pressed so as to overlap each other in parallel to form a molten metal 28 having a melting point or higher into a predetermined shape. A molded product made of metallic glass, which is formed into the predetermined shape by deforming and cooling the molten metal 28 at or above the critical cooling rate simultaneously with or after the deformation. 2. The molded product made of metallic glass according to claim 1, which is produced as the face body 1 of the golf club head 2. 3. An upper mold 4 having a smooth curved surface 72 to a flat surface 41.
And a lower mold 5 having a cavity 7 and the upper mold 4
The metal material 26 is placed on the lower die 5 of the press die 6 having no fitting portion where the lower die 5 and the lower die 5 are fitted to each other, and a high-energy heat source capable of melting the metal material 26 is used. Then, the metal material 26 is melted, and the upper mold 4 and the lower mold 5 are rocked relatively from an inclined shape and pressed so as to overlap each other in parallel to form a molten metal 28 having a melting point or higher into a predetermined shape. A method for producing a molded product made of metallic glass, characterized in that the molten metal 28 is deformed and, at the same time as or after the deformation, is cooled at a critical cooling rate or higher to produce the predetermined shape. 4. An upper mold 4 having a smooth curved surface 72 to a flat surface 41.
And a lower mold 5 having a cavity 7 and the upper mold 4
The metal material 26 is placed on the lower die 5 of the press die 6 having no fitting portion where the lower die 5 and the lower die 5 are fitted to each other, and a high-energy heat source capable of melting the metal material 26 is used. Then, the metal material 26 is melted, and the upper mold 4 is swung from the inclined shape with respect to the lower mold 5 and pressed so as to overlap each other in parallel to deform the molten metal 28 having a melting point or higher into a predetermined shape. A method for producing a molded product made of metallic glass, wherein the molten metal 28 is cooled at a critical cooling rate or higher at the same time as or after the deformation to produce the metal glass into the predetermined shape. 5. The cavity 7 has a first concave portion 7a for disposing and dissolving a shallow material for disposing the metal material 26 and stopping the obtained molten metal 28, and the upper die 4 and the lower die 5 are provided. And a second concave portion 7b for final molding for allowing the molten metal 28 raised on the first concave portion 7a to flow and to be formed into a predetermined shape when the two are pressed one on the other in an inclined shape and a parallel shape. Item 5. The method for producing a metallic glass molded product according to item 3 or 4. 6. The relative inclination angle θ between the upper mold 4 and the lower mold 5
The method for producing a metallic glass molded product according to claim 3, wherein the angle is 1 ° to 15 °. 7. The second concave portion 7b of the lower mold 5 has a radius of curvature of 5 inches.
7. The molded product made of metallic glass according to claim 3, 4, 5 or 6, wherein the upper die 4 is a smooth surface having a curved surface 72 to a flat surface 41 having a radius of curvature of 5 inches or more. Recipe. 8. The method for producing a molded product made of metallic glass according to claim 3, which is produced as the face body 1 of the golf club head 2.