JP2002079354A - Mold for casting metal, method for casting metal and cast block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for casting metal in which the mold for casting a complicated-shape metal for obtaining a three-dimensional deformed cast block can be easily obtained at a low cost and a forging in the following process of the cast block can be easily applied. SOLUTION: In the mold for casting the metal, composed of a cooling plate 1, a side surface mold member 2, the bottom 31 of a molten metal receiving vessel 3 and a switching plug 4 for opening/closing a sprue 31a arranged at the bottom 31, the side surface mold member 2 is divided into a lower side surface mold divided member 21 and an upper side surface mold member 22 according to the shape of the cast block C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic working material, and more particularly to a metal casting mold for casting a forging ingot, a metal casting method, and an ingot as a plastic working material.

[0002]

2. Description of the Related Art FIG. 21 is an explanatory view showing a schematic configuration of a conventional ingot casting apparatus including a metal casting mold.

In FIG. 21, reference numeral 1 denotes a cooling plate as a lower mold member, and 2 denotes a side mold member. The side mold member 2 has a cylindrical inclined surface (a tapered taper) that expands downward within 5 degrees. ) Is provided.
Reference numeral 3 denotes a molten metal receiving tank for storing a molten metal M from a melting furnace or the like (not shown). A bottom 31 constitutes an upper mold member, and a mortar-shaped gate (note) is provided at the center of the bottom 31. (Inlet) 31a is provided. The side mold member 2 is attached to the lower side of the bottom 31 of the molten metal receiving tank 3 by predetermined attaching means (not shown), for example, attaching screws.

[0004] Reference numeral 4 denotes an opening / closing stopper for opening / closing the gate 3a. The opening / closing stopper driving device (not shown) opens the gate 31a to supply the molten metal M into the casting mold. As a result, the gate 31a is closed to shut off the supply of the molten metal M into the casting mold. The cooling plate 1 (lower mold member), the side mold member 2, the bottom 31 (upper mold member) of the molten metal receiving tank 3, and the opening / closing plug 4 for opening / closing the gate 31a have substantially flat upper and lower surfaces. A casting mold for casting a parallel column-shaped ingot C is configured.

[0005] 5 is a spray nozzle for cooling the cooling plate 1 by spraying water to the lower surface of the cooling plate 1, 6 is a cylindrical case,
The cylindrical case 6 accommodates and fixes the spray nozzle 5 and supports the cooling plate 1, and is provided with a discharge port 6a for discharging cooling water. Numeral 7 denotes an electric furnace for maintaining the molten metal M at a predetermined temperature in order to prevent the molten metal M poured into the casting mold from being cooled from the side wall of the casting mold. Reference numeral 8 denotes an upper lid that closes the upper side of the molten metal receiving tank 3, and is provided with a through hole 8a through which the opening / closing plug 4 is inserted.

Next, the casting of the ingot C will be described. First, the cooling plate 1, the spray nozzle 5, and the cylindrical case 6 are raised by a cooling plate driving device as a lower mold member driving device (not shown), and the lower side of the side mold member 2 is closed by the cooling plate 1. The open / close tap 4 is pulled up by a not-shown open / close drive, and the molten metal M is filled into the casting mold from the gate 31a to fill the casting mold. Close.

Next, water is sprayed from the spray nozzle 5 to the lower surface of the cooling plate 1 so that the molten metal M
Is cooled in one direction, that is, from the lower side to the upper side (the surface of the opening / closing plug 4 on which the mold is formed) and solidified, and also cooled so as not to close the solidified interface of the molten metal M. When the molten metal M is cooled and solidified, solidification shrinkage occurs. Then, when the molten metal M is cooled to form the ingot C, the cooling plate 1, the spray nozzle 5, and the cylindrical case 6 are lowered by the cooling plate driving device, and the ingot C is moved to the side mold member 2 and the molten metal receiving tank. Since the ingot C is separated from the bottom 31 and descends while resting on the cooling plate 1, the ingot C can be obtained by taking out the ingot C from the cooling plate 1.

Thereafter, the ingot C can be sequentially cast in the same manner. Such an ingot casting apparatus is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-174198.

[0009]

The conventional casting mold for metal casts a parallel column-shaped ingot C whose upper and lower surfaces are substantially flat. However, when manufacturing a forged product with a complicated shape, the upper and lower surfaces are almost flat, so the plastic flow to the complicated forging die is insufficient, so that a single forging cannot be completed and preforming is necessary. become. Therefore,
There is a demand that an ingot C capable of forming a forged product having a complicated shape by a single forging can be obtained.

SUMMARY OF THE INVENTION The present invention has been made in order to meet the above-mentioned demand, and it is an object of the present invention to easily and inexpensively obtain a metal casting mold having a complicated shape for obtaining a three-dimensionally deformed ingot. The present invention provides a metal casting mold and an ingot that can be used for facilitating forging in a later step of the ingot.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a metal casting mold comprising a lower mold member, a side mold member, an upper mold member, and an opening / closing stopper for opening / closing a gate formed on any of the three members. In the above, the side mold member may be constituted by a plurality of side mold division members divided vertically, horizontally and / or diagonally according to the shape of the ingot, or the lower mold member or the upper mold member may be formed according to the shape of the ingot. And a plurality of members. Then, the side mold dividing member, the lower mold member, and the upper mold member may be formed using a stab, and the stab may be provided with a punching taper. In addition, it is desirable to provide an air venting means such as a groove or a hole for discharging the air accumulated in the mold space by positioning each member by a positioning means or injecting a molten metal from a gate. Further, the upper surface forming the mold space of the upper mold member may be formed by an inclined surface rising toward the air venting means, or a gate may be provided on the upper mold member and the upper surface forming the mold space of the upper mold member. Is desirably formed by an inclined surface rising toward the gate.

A metal casting method according to another aspect of the present invention uses any one of the above-described metal casting molds, and solidifies the molten metal from a part of the casting mold toward a surface on which a mold for an open / close plug is to be formed. It is a casting method to be performed. Furthermore, the ingot according to the other invention has no cut surface and has a three-dimensional irregular shape.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a metal casting mold according to a first embodiment of the present invention, FIG. 2 is a plan view of a lower side mold dividing member shown in FIG. 1, and FIG. 3 is an upper side shown in FIG. FIG. 4 is a plan view of a mold dividing member, FIG. 4 is a perspective view of an ingot obtained by the metal casting mold shown in FIG. 1, and FIG. FIG. 6 is a plan view of the lower side mold splitting member for obtaining FIG.
FIG. 22 is a perspective view of an ingot obtained when a side mold member composed of the lower side mold division member and the upper side mold division member of FIG. 3 is used, and the same or corresponding parts as in FIG. The description is omitted. The part of the ingot casting apparatus not shown in FIG. 1 is configured similarly to FIG.

In these figures, reference numerals 21 and 21A denote lower side mold dividing members constituting the side mold member 2. The lower side mold dividing member 21 is provided with a rectangular through hole 21a. A circular through hole 2 is formed in the dividing member 21A.
1b is provided. The air vent groove 21c (air vent means) through which the molten metal M does not flow out but air can flow out onto the upper surfaces of the lower side mold split members 21 and 21A.
Are provided in the radial direction (radially).

Here, the air vent groove 21c will be described. The depth is 40 μm or more and 200 μm or less, preferably 40 μm or more and 100 μm or less, more preferably 40 μm or less.
m to 70 μm, width 2 mm or more, and effective length 1 mm to 30 mm, preferably 2 mm to 30 m
m, but the cross-sectional shape may be rectangular or circular. The reason why the effective length of the air vent groove 21c is set to 1 mm or 2 mm or more and 30 mm or less is to prevent the air from escaping due to the viscous resistance of the air and to facilitate the processing of the air vent groove 21c. And
When the effective length of the air vent groove 21c is 30 mm or more from the mold space, the depth of the portion where the air vent groove 21c is 30 mm or more from the mold space, that is, the cross-sectional area may be increased so that air can easily escape.

The air vent groove to be described later is formed in the same manner, and the air vent hole may be formed instead of the air vent groove, or the air vent channel may be formed by lining the liner. The liner described above is preferably a refractory material such as a metal plate such as stainless steel or iron, a ceramic plate, or a ceramic fiber sheet. When the molten metal M is inserted into the air vent groove 21c, for example, when the depth exceeds 200 μm, a valve that can be opened and closed is provided in the air vent groove 21c, or a pressurized gas that supplies a pressurized gas that does not allow the molten metal M to be inserted. It is preferable to provide a gas supply means to prevent the molten metal M from being inserted.

Reference numeral 22 denotes an upper side mold dividing member constituting the side mold member 2, which is provided with a circular through hole 22a. And on the upper surface of the upper side mold separating member 22,
Air vent grooves 21b (air venting means) through which air can flow without the molten metal M flowing out are provided in the radial direction at predetermined intervals in the circumferential direction.

The through holes 21a, 21b, 22a are
Cylindrical sloping surface (opening taper) that expands downward within 5 degrees
Since it is easy to take out the ingot C,
preferable. The reason why the draft taper is set to 5 degrees or less is that if the draft taper exceeds 5 degrees, the vertical dimension difference of the outer peripheral portion of the ingot C becomes large, and the quality of the forged product deteriorates. Then, the through holes 21a and 21b and the through hole 2
2a may be formed coaxially or not coaxially.

Further, the upper side mold dividing member 22 is positioned below the bottom 31 of the molten metal receiving tank 3 by positioning means (not shown), for example, a fitting pin and a fitting groove.
The lower side mold dividing member 21 is attached to a lower side of the upper side mold dividing member 22 by positioning means such as a fitting pin (not shown). It is positioned by the groove, and is mounted by a predetermined mounting means (not shown), for example, a mounting screw.

Next, a description will be given of a case where the ingot C is cast using the lower side mold splitting member 21 and the upper side mold splitting member 22, which are different from the conventional example. First, when the opening / closing stopper 4 is pulled up to inject the molten metal M into the casting mold from the sprue 31a, the air remaining (enclosed) in the mold space is released from the air vent grooves 21c, 22b provided in the side mold dividing members 21, 22. , The molten metal M spreads to every corner in the casting mold. Others
Although the description is omitted because it is the same as that of the conventional example, an ingot C having a convex portion p can be obtained as shown in FIG.
In addition, by replacing the lower side mold dividing member 21 with the lower side mold dividing member 21A, an ingot C having a convex portion p can be obtained as shown in FIG.

As described above, according to one embodiment of the present invention, for example, the cross-sectional area in the vertical direction is reduced and the projection of the upper through-hole 22a is lowered according to the shape of the ingot C to be cast. The side mold member 2 is divided horizontally at a portion where the part enters the through holes 21a and 21b on the lower side to form the lower side mold division member 21 or the lower side mold division member 21A and the upper side mold division member 22. As a result, each of the divided side mold split members 21, 21A, 22 has a simple shape, and each of the side mold split members 21, 21A, 22 can be easily and easily processed by using a normal tool. Can be.
Therefore, for example, at least two columns such as a cylinder having different diameters, a cylinder and a quadrangular prism, a truncated cone having the same shape, and a truncated pyramid are used.
At least one of the bottom, side, and top surfaces
A simple and inexpensive casting mold having a complicated shape for obtaining an ingot C having a casting surface with no cut surface and a whole surface having a three-dimensional irregular shape that is not a single surface including a curved surface. By using this casting mold, it is possible to obtain a three-dimensionally deformed ingot C having no cut surface and a casting surface on the entire surface. Furthermore, a three-dimensionally shaped ingot C
It is preferable that a part of the corner located at the top is a curved surface having a radius of at least 1 mm.

Further, since a three-dimensionally shaped ingot C can be obtained, a forged product having a complicated shape can be formed by a single forging, and forging in the subsequent process of the ingot C becomes easy. .
Further, since the side mold dividing members 21, 21A, 22 are positioned and attached to each other by the positioning means, they can be easily assembled, and the ingot C having the desired shape can be obtained.
Can be obtained. And each side mold dividing member 2
Since the air vent grooves 21c and 22b are provided in 1, 21A and 22, the ingot C having the desired dimensions and the desired shape of the corner and having a small variation in weight can be obtained.

Further, only a part of the side mold dividing member (the lower side mold dividing member or the upper side mold dividing member) constituting the side mold member 2 is replaced, that is, a part of the side mold dividing member is shared. Ingot C with different three-dimensional shapes
Therefore, a metal casting mold for obtaining a plurality of three-dimensionally deformed ingots C can be obtained easily and at low cost.

FIG. 7 is a sectional view showing a metal casting mold according to a second embodiment of the present invention, FIG. 8 is a plan view of the lower side mold dividing member shown in FIG. 7, and FIG. 9 is shown in FIG. FIG. 10 is a perspective view of an ingot obtained by the metal casting mold shown in FIG. 7, and the same reference numerals as those in FIGS. 1 to 6 and FIG. 21 denote the same or corresponding parts. And the description is omitted. The part of the ingot casting apparatus not shown in FIG. 7 is configured similarly to FIG.

In these figures, 1a indicates a concave portion,
It is provided above the cooling plate 1 and forms a mold space. It is preferable to form the concave portion 1a with a cylindrical inclined surface that expands upward within 5 degrees because the ingot C can be easily taken out.

Reference numeral 23 denotes a lower side mold dividing member constituting the side mold member 2, which is provided with a pentagonal through hole 23a, and has an air vent groove on the upper surface through which the molten metal M does not flow and air can flow. 23b (air venting means) are provided in the radial direction at predetermined intervals in the circumferential direction. The lower side mold separating member 23 is positioned above the cooling plate 1 by positioning means (not shown), for example, a fitting pin and a fitting groove, and is attached by predetermined mounting means (not shown), for example, a mounting screw. Have been. The through-hole 23
a is a cylindrical inclined surface that expands upward within 5 degrees.

Reference numeral 24 denotes an upper side mold dividing member constituting the side mold member 2, which is provided with a circular through hole 24a.
On the upper surface, air vent grooves 24b (air vent means) from which the molten metal M does not flow and air can flow out are provided at predetermined intervals in the circumferential direction in the radial direction. The upper side mold dividing member 24 is positioned below the bottom 31 of the molten metal receiving tank 3 by positioning means (not shown), for example, a fitting pin and a fitting groove, and predetermined mounting means (not shown), for example, mounting Mounted with screws. In addition, it is preferable to form the through-hole 24a with a cylindrical inclined surface that expands downward within 5 degrees because the ingot C can be easily taken out. The through hole 23a and the through hole 24a may or may not be formed coaxially.

Numeral 25 denotes a stab, which is detachably attached to the lower side mold dividing member 23 by, for example, a mounting screw, and constitutes the side mold member 2 together with the lower side mold dividing member 23. Is provided.

The lower side mold dividing member 23 without the above-described stabs 25, that is, the lower side mold dividing member 23 and the upper side mold, each having a pentagonal through hole 23a having a closed inner peripheral surface forming a mold space. As shown in FIG. 10, when casting the ingot C having the convex part p on the upper and lower sides by using the side mold member 2 including the split member 24, the ingot C is placed on the lower side mold split member 23. The only difference from the first embodiment is that it descends in the state in which the ingot C is lowered, and the other points are the same as those in the first embodiment or the conventional example.

Next, as shown by a two-dot chain line in FIGS. 7 and 8, the side mold member 2 composed of a lower mold split member 23 provided with a stab 25 and an upper mold split member 24 is used. As shown by a two-dot chain line in FIG.
When casting the ingot C having the ingot C, the point at which the ingot C descends while being placed on the lower side mold dividing member 23, and when taking out the ingot C, remove the stab 25 and then take out the ingot C. Only the points differ from the first embodiment, and the other points are the same as those of the first embodiment or the conventional example. Therefore, the description of the casting of the ingot C is omitted.

In the second embodiment, the first
The same effect as in the embodiment can be obtained. Further, since at least one side mold dividing member is formed using a stab, a more complicated casting mold and ingot C can be obtained.

FIG. 11 is a plan view showing a metal casting mold according to a third embodiment of the present invention, and FIG. 12 is a fourth embodiment of the present invention.
It is a top view of a casting mold of metal which is an embodiment.

In these figures, reference numeral 26 denotes a left side mold separating member constituting the side mold member 2, which is provided with a keyhole-shaped through-hole 26a, and on which the molten metal M does not flow out but air flows out. Air vent grooves 26b (air vent means) are provided at predetermined intervals in the circumferential direction. 27,2
Reference numeral 7A denotes a right side mold dividing member constituting the side mold member 2. The right side mold dividing member 27 is provided with a circular through hole 27a which smoothly communicates with the through hole 26a. A straight through-hole 27b having a width smoothly communicating with the through-hole 26a is provided. Then, on the upper surface of the right side mold dividing member 27, 27A,
Air vent grooves 27c (air vent means) from which the molten metal M does not flow but air can flow out are provided at predetermined intervals in the circumferential direction.

The through holes 26a, 27a, 27b are
It is preferable to use a cylindrical inclined surface (pulling taper) that expands downward (within 5 degrees) within 5 degrees because the ingot C can be easily taken out. The left and right side mold dividing members 26, 27 and 27A are positioned below the bottom 31 of the molten metal receiving tank 3 by positioning means (not shown), for example, a fitting pin and a fitting groove. Mounting means, for example, mounting screws.

Using the left side mold dividing member 26 and the right side mold dividing member 27 or the side mold member 2 composed of the left side mold dividing member 26 and the right side mold dividing member 27A, an ingot of a predetermined shape is used. When casting C, it is the same as in the first embodiment or the conventional example, and therefore, description of casting of the ingot C is omitted. In the third and fourth embodiments, the same effects as in the first and second embodiments can be obtained.

FIG. 13 is a sectional view showing a metal casting mold according to a fifth embodiment of the present invention, FIG. 14 is a plan view of a side mold member shown in FIG. 13, and FIG. It is the perspective view which turned upside down of the ingot obtained by the casting mold, and the same code | symbol is attached | subjected to the same or corresponding part as FIGS. 1-10 and FIG. 21, and description is abbreviate | omitted. The part of the ingot casting apparatus not shown in FIG. 13 is configured similarly to FIG.

In these drawings, reference numeral 11 denotes a sashimi, which is detachably attached to the cooling plate 1 by, for example, mounting screws, and constitutes a lower mold member together with the cooling plate 1.
As shown in FIG. 15, a truncated conical recess d is formed in the ingot C, and a punch taper is provided. In addition, on the upper surface of the side mold member 2, air vent grooves 2b (air vent means) from which the molten metal M does not flow and air can flow out are provided at predetermined intervals in the circumferential direction in the radial direction.

As shown in FIG. 15, when casting an ingot C having a truncated conical recess d at the bottom with the metal casting mold shown in FIGS. 13 and 14, the same as in the first embodiment. The ingot C having a truncated conical recess d at the bottom can be obtained. In the fifth embodiment, the same effects as those of the first and second embodiments can be obtained.

FIG. 16 is a sectional view showing a metal casting mold according to a sixth embodiment of the present invention, FIG. 17 is a plan view of a side mold member shown in FIG. 16, and FIG. FIG. 19 is a perspective view of an ingot obtained by a casting mold, FIG. 19 is a front view showing another sashimi, and FIG. 20 is a view of the sashimi shown in FIG.
FIG. 21 is a perspective view of an ingot cast in place of the sashimi shown in FIG. 8, and the same or corresponding parts as in FIGS. 1 to 15 and FIG. The part of the ingot casting apparatus not shown in FIG. 16 is configured in the same manner as in FIG.

In these figures, reference numerals 32 and 33 denote stabs, which are detachably attached to the bottom 31 by, for example, mounting screws, and constitute a top mold member together with the bottom 31, and are provided with a punching taper. . And
The sashimi 32 shown in FIG. 16 is for casting an ingot C having a notch f, as shown in FIG. 18, and the sashimi 33 shown in FIG. 19 is a casting ingot having a notch f, as shown in FIG. C is to be cast.

When the ingot C shown in FIG. 18 or FIG. 20 is cast using the stab 32 or the stab 33, the ingot C having the notch f is obtained by casting in the same manner as in the first embodiment. Can be. In the sixth embodiment, the same effects as in the first embodiment can be obtained.

In the above-described embodiment, only an example in which the side mold member constituting the metal casting mold is divided into upper and lower or left and right directions is shown. However, if the ingot can be taken out, the shape can be adjusted according to the shape of the ingot. Similar effects can be obtained by diagonally dividing, or vertically, horizontally, and diagonally, depending on the shape of the ingot. When dividing in this way, the dividing surface may be a curved surface in addition to a flat surface, or may be a horizontal surface, a vertical surface, or an inclined surface.

Next, an example in which the lower mold member is constituted by a single cooling plate 1 or the cooling plate 1 and the stab 11 is shown. A part of the member may be a lower mold member, or the lower mold member may be composed of a plurality of members excluding a stab.
In this case, the lower mold member may be provided with a projection having a taper in addition to the recess. As described above, when the lower mold member is constituted by a plurality of members, it is possible to obtain an ingot C of a different three-dimensionally deformed shape by replacing some members, that is, by sharing some members, A plurality of casting molds can be obtained easily and at low cost.

The upper mold member is connected to the bottom 31 of the molten metal receiving tank 3.
Although the example constituted by was shown, even if it is an upper mold member other than the bottom 31, a part of the side mold member may be an upper mold member, and the upper mold member is constituted by a plurality of members excluding a stab. May be. In this case, in addition to the concave portion, the upper mold member may be provided with a protruding portion having a taper. As described above, when the upper mold member is composed of a plurality of members, by exchanging some members, that is, it is possible to obtain a different three-dimensionally deformed ingot C by sharing some members, A plurality of casting molds can be obtained easily and at low cost.

As described above, when the lower mold member, the side mold member, and / or the upper mold member are formed of a plurality of members, the rate of expansion due to the molten metal is different between a portion near the mold space and a portion far from the mold space. Because of this difference, by providing an appropriate clearance between the members constituting the casting mold in consideration of the expansion ratio, no extra stress is applied to the casting mold, and the casting of the desired shape is performed. Lump C can be obtained. In addition, the side mold member is divided into a plurality of parts, and the lower mold member or the upper mold member is composed of a plurality of members. However, it is needless to say that these members may be appropriately combined.

Then, a punch taper was provided.
Is solidified and contracted to form an ingot C, which is separated from the inner surface of the casting mold. In addition, although the mounting screws are illustrated as an example of the mounting means for mounting each mold subdivision member, other mounting means such as fitting and engaging may be used depending on the mounting state, mounting conditions, mounting accuracy, and the like. Furthermore, as an example of the positioning means of each mold division member, a fitting pin, a fitting groove is illustrated,
For example, it may be a positioning means such as a knock pin, a dovetail groove, a groove, and a bolt.

Although the upper surface forming the mold space of the upper mold member has been described as a flat surface, it may be a slope rising toward the air venting means or a slope rising toward the gate. By making the inclined surface ascending in this manner, the air can easily escape, so that the molten metal can easily enter the mold space, and the corner of the desired shape can be formed in the ingot C. Next, mounting screws are shown as an example of mounting means for mounting each member constituting the casting mold. However, a configuration in which the members are fixed by a clamp or set in a fixing jig and mounted may be used.

In the above description, the gate is provided on the upper mold member. However, the gate may be provided on another member. In addition, although the air release means is provided on the upper surface of the divided member, other positions may be used as long as the air in the mold space can be released and the corner of the ingot C can be formed in a desired state. Furthermore, after the molten metal was filled in the casting mold, the molten metal was cooled through the lower mold member. However, if the predetermined conditions are satisfied, the molten metal should be cooled while pouring the molten metal into the casting mold. Can be.

Next, the members constituting the casting mold include ordinary refractories, heat-insulating refractories mainly composed of CaO, SiO ₂ , Al ₂ O ₃ , MgO, etc., SiC, Si ₃ N ₄ , graphite, B
N, TiO ₂ , ZrO ₂ , or AlN alone or a mixture of these refractories, Fe, Cu, carbon steel, stainless steel, tool steel (such as SKD6 and SKD11), and a super steel alloy may be used. Here, the material of the casting mold will be described. When the ingot C is Al, Mg, Zn (including the above alloy), it is preferable to use the above-described material,
When the ingot C is Fe or Cu (including the above alloy), ordinary refractories, CaO, SiO ₂ , Al ₂ O ₃ , Mg
Adiabatic refractory mainly composed of O, SiC, Si ₃ N ₄ ,
It is preferable to use a simple substance of graphite, BN, TiO ₂ , ZrO ₂ , and AlN, or a refractory mixture thereof. The size and thickness of the casting mold are not limited. In addition, each member constituting the casting mold may be made of the same material, or may be made different depending on the shape of the ingot, use conditions, and the like.

[0050]

As described above, according to the present invention, the side mold member is divided vertically, horizontally and / or diagonally according to the shape of the ingot to be cast, and the lower mold member or the upper mold member is divided into plural parts. Or each member using a sashimi, so each divided side mold splitting member etc. becomes a simple shape, each side mold splitting member etc. can be simplified by using a normal tool, And it can be easily processed.

Therefore, it is possible to easily and inexpensively obtain a casting mold of a complicated shape for obtaining an ingot having a three-dimensionally deformed shape and having no cut surface on the surface. Thus, a three-dimensionally shaped ingot having no cut surface on the surface can be obtained. Further, since only a part of the members constituting each mold member is replaced, that is, a part of the members can be shared to obtain an ingot of a different three-dimensionally deformed shape, a plurality of three-dimensionally deformed shaped ingots can be obtained. A casting mold for obtaining a lump can be obtained easily and at low cost. Then, since a three-dimensionally deformed ingot can be obtained, a forged product having a complicated shape can be formed by a single forging, so that forging in the subsequent process of the ingot is facilitated.

Further, since the members are positioned relative to each other by the positioning means, they can be easily assembled.
An ingot of the desired shape can be obtained. Then, by injecting the molten metal from the sprue, air vent means for discharging air accumulated in the mold space is provided, or the upper surface forming the mold space of the upper mold member is formed as an inclined surface rising toward the air vent means, Since the inclined surface rises toward the bottom, the air easily escapes and the molten metal easily enters the mold space, the ingot has the desired dimensions and the desired shape of the ingot, and there is little variation in weight. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a metal casting mold according to a first embodiment of the present invention.

FIG. 2 is a plan view of a lower side mold splitting member shown in FIG. 1;

FIG. 3 is a plan view of an upper side mold dividing member shown in FIG. 1;

FIG. 4 is a perspective view of an ingot obtained by the metal casting mold shown in FIG. 1;

5 is a plan view of a lower mold splitting member for obtaining an ingot different from that of FIG. 4 in combination with the upper mold splitting member of FIG. 3;

6 is a perspective view of an ingot obtained when a side mold member composed of the lower side mold division member of FIG. 5 and the upper side mold division member of FIG. 3 is used.

FIG. 7 is a sectional view showing a metal casting mold according to a second embodiment of the present invention.

FIG. 8 is a plan view of the lower side mold dividing member shown in FIG. 7;

FIG. 9 is a plan view of the upper side mold dividing member shown in FIG. 7;

FIG. 10 is a perspective view of an ingot obtained by the metal casting mold shown in FIG. 7;

FIG. 11 is a plan view showing a metal casting mold according to a third embodiment of the present invention.

FIG. 12 is a plan view showing a metal casting mold according to a fourth embodiment of the present invention.

FIG. 13 is a sectional view showing a metal casting mold according to a fifth embodiment of the present invention.

FIG. 14 is a plan view of the side mold member shown in FIG.

FIG. 15 is a perspective view of a metal ingot obtained by using the metal casting mold shown in FIG.

FIG. 16 is a sectional view showing a metal casting mold according to a sixth embodiment of the present invention.

FIG. 17 is a plan view of the side mold member shown in FIG. 16;

FIG. 18 is a perspective view of an ingot obtained by the metal casting mold shown in FIG.

FIG. 19 is a front view showing another sashimi.

20 is a perspective view of an ingot obtained by casting the stab in FIG. 16 instead of the stab in FIG. 18;

FIG. 21 is an explanatory view showing a schematic configuration of a conventional ingot casting apparatus including a metal casting mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower surface mold member (cooling plate) 1a Recessed part 11 Sashimi 2 Side surface mold member 2a Through hole 2b Air release means (air release groove) 21, 21A Lower side surface mold division member 21a, 21b Through hole 21c Air release means (air release groove) 22 Upper side surface Mold dividing member 22a Through hole 22b Air venting means (air vent groove) 23 Lower side mold dividing member 23a Through hole 23b Air venting means (air vent groove) 24 Upper side mold dividing member 24a Through hole 24b Air venting means (air vent groove) 25 Sashimi 26 Left side Side mold dividing member 26a Through hole 26b Air venting means (air vent groove) 27, 27A Right side mold dividing member 27a, 27b Penetrating port 27c Air venting means (air vent groove) 3 Molten receiving tank 31 Top mold member (bottom) 31a Gate 32,33 Sashimi 4 Opening / closing stopper 5 Spray nose 6 6 cylindrical case 6a discharge port 7 electric furnace 8 top lid 8a through hole M molten metal C ingot p convex part d concave part f notch

Claims (13)

[Claims] 1. A metal casting mold comprising a lower mold member, a side mold member, an upper mold member, and an opening / closing stopper for opening / closing a gate formed on any of the three members, wherein the side mold member comprises: A casting mold for metal, comprising: a plurality of side mold division members that are divided vertically, horizontally, and / or diagonally according to the shape of the ingot. 2. The metal casting mold according to claim 1, wherein at least one of the plurality of side mold division members is configured using a stab. . 3. A metal casting mold comprising a lower mold member, a side mold member, an upper mold member, and an opening / closing stopper for opening / closing a gate formed on any of the three members, wherein the lower mold member comprises: A metal casting mold comprising a plurality of members according to the shape of an ingot. 4. The metal casting mold according to claim 3, wherein the lower mold member is formed using a stab. 5. A metal casting mold comprising a lower mold member, a side mold member, an upper mold member, and an opening / closing stopper for opening / closing a gate formed in any of the three members, wherein the upper mold member comprises: A metal casting mold comprising a plurality of members according to the shape of an ingot. 6. The metal casting mold according to claim 5, wherein the upper mold member is formed using a stab. 7. The casting mold for metal according to claim 2, wherein the stab has a taper. . 8. The metal casting mold according to claim 1, wherein said members are positioned with respect to each other by positioning means. For mold. 9. The metal casting mold according to any one of claims 1 to 8, further comprising an air vent for discharging air collected in the mold space by injecting molten metal from the gate. A casting mold for metal, characterized in that: 10. The metal casting mold according to claim 9, wherein an upper surface forming a mold space of the upper mold member is formed by an inclined surface rising toward the air venting means. Metal casting mold. 11. The metal casting mold according to claim 9, wherein the gate is provided in the upper mold member, and an upper surface forming a mold space of the upper mold member rises toward the gate. A metal casting mold, which is formed by an inclined surface. 12. The method according to claim 1, wherein
A method for casting a metal, comprising: solidifying a molten metal from a part of the casting mold toward a surface on which the mold of the opening and closing plug is formed, using the metal casting mold described in the above item. 13. An ingot having no three-dimensional shape with no cut surface on the surface.