JP2001047193A - Ingot, production thereof and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily cut an ingot at on-site by inserting a mold for recessed part formation into molten metal after pouring the molten metal into a mold, shifting the mold together with the molten metal and removing the mold for recessed part formation after solidifying the molten metal. SOLUTION: When the mold 1 supplied with the molten metal is shifted just below a device provided with the mold 2 for recessed part formation, a dog 20 is brought into contact with a mold conveying wheel 14, and a limit switch is worked to detect the mold 1. Based on this detected signal, the mold 2 for recessed part formation is descended and a V-shape part at the tip part of the mold 2 for recessed part formation is inserted into the molten metal. Into the mold for recessed part formation, the cooling air is blown from an air nozzle 13. The shifting carriage disposed with the mold 2 for recessed part formation, is shifted at the same speed as the shifting speed of the mold 1. When the molten metal in the mold 1 is solidified and the ingot is formed, the mold 2 for recessed part formation, is pulled up and removed from the ingot. The ingot is formed as the sound state and the recessed part 4 is formed at the removed track of the mold 2 for recessed part formation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily cutting an ingot body at an ingot melting site as required by forming a concave portion on a free solidified surface of the ingot body.
The present invention relates to an ingot having a required size, a method for manufacturing the ingot, and an apparatus for manufacturing the ingot.

[0002]

2. Description of the Related Art In a melting spot where an ingot is melted to form a die casting, there is a case where it is desired to feed only half or a part of the ingot in order to adjust the temperature and the amount of hot water. In such a case, it is only necessary to cut the required amount of ingot easily on the spot.However, since the conventional ingot was simply a thick rod without any cutting point, for example, a cutting machine such as an automatic circular saw Therefore, the ingot could not be cut easily at the melting site without using a cutting machine.

[0003] Therefore, a projection is formed at the bottom of the mold, and a recess is formed on the side of the mold of the ingot using this mold.
It has been proposed to cut the ingot from the concave part using the concave part, but if it is intended to form a convex part on the bottom of the mold, all the already operating molds are discarded and a concave part is formed on the bottom part. There is a problem that it is necessary to replace the mold with a new mold having a convex portion for use, which requires enormous equipment costs.

[0004]

The problem to be solved by the present invention is as follows.
An object of the present invention is to develop an ingot with a concave portion, which can be easily cut on site, and a method of manufacturing the ingot, and a device capable of manufacturing the ingot at low cost, while hardly requiring equipment costs.

[0005]

The ingot (5) according to the first aspect is characterized in that the ingot (5) is a free solidified surface (23) of the ingot body (51).
A concave portion (4) is formed in the groove. "

As a result, the recess (4) formed in the free solidified surface (23) serves as a cut end by hammering the ingot (5), and the ingot (5) is cut by a cutting machine at a work site. It can be easily cut without doing.
Further, as a method of forming the concave portion (4) in the ingot (5),
In order to form a convex part on the bottom of the mold (1), all of the already operating mold (1) must be discarded and replaced with a new mold with a concave part forming convex part on the bottom. However, enormous equipment costs are required, but this problem can be solved by forming the concave portion (4) in the free solidified surface (23) of the ingot body (51).

The ingot (5) described in (Claim 2) is a limited version of the ingot (5) described in (Claim 1), wherein the long side (24) and the recess (4) of the ingot body (51) are provided. And a rib (4a) is formed between them.

According to this, the rib (4a) is connected to the ingot main body.
(51) plays the role of reinforcement of the recessed part (4) formation part,
When the ingot (5) is stacked and transported, it is possible to prevent the ingot (5) from being broken from the recess (4).

The ingot (5) according to (Claim 3) is a further limited version of the ingot (5) according to (Claim 2), wherein the shape of the recess (4) is a triangular prism shape, and ), The opening width becomes smaller as approaching the bottom. "

According to this, since the shape of the concave portion (4) is a triangular prism, the groove height becomes a knife edge, and the ingot (5)
When cutting from the recess (4) by hammering, the impact load at the time of impact concentrates on the groove bottom of the recess (4) and the ingot
(5) facilitates cutting.

The ingot (5) according to (Claim 4) further restricts the ingot (5) according to (Claim 3), and includes an ingot (5) in the direction of the long side (24) of the ingot body (51). Four)
Are formed ". Thereby, the method for manufacturing the ingot (5) according to (5), wherein the ingot (5) can be cut into an arbitrary number or size, `` conveys the mold (1) in one direction, After putting the molten metal (5a) in the mold (1), the concave forming mold (2) is placed in the molten metal (5a).
Is inserted and moved together with the molten metal (5a) .After the molten metal (5a) is solidified, the ingot (5) in the mold (1) is used to form the concave forming mold (2).
Withdrawal ".

When the recess (4) is formed on the side of the mold of the ingot (5), all the molds (1) already in operation are discarded,
Although it is necessary to replace the mold with a new mold provided with a convex portion for forming a concave portion at the bottom, this problem can be solved by forming the concave portion (4) on the free solidified surface (23).

The method for manufacturing the ingot (5) according to (Claim 6) is a limited version of the method for manufacturing the ingot according to (Claim 5). After putting the molten metal (5a) into the molten metal (5a), the concave forming mold (2)
Is inserted, and the concave portion forming die (2) is moved together with the molten metal (5a) while maintaining a state where no relative displacement occurs between the mold (1) and the concave portion forming die (2), and the molten metal (5a ) After the mold has set (1)
Remove the mold (2) for forming the recess from the ingot (5) in the inside. ''
It is characterized by things.

According to this method, the recess forming die (2) is inserted into the molten metal (5a) while the mold (1) is moving, and the concave portion is formed from the ingot (5) where the molten metal (5a) is solidified. The mold (2) is released, during which the recess forming mold (2) is
The crystals that have grown from the surface of the concave forming mold (2), the inner surface of the mold (1), the free solidified surface (23) of the molten metal (5a), etc. are bonded to each other in a perfect state. Solidifies to form one complete block,
Complete recesses (4) will be formed on the free solidification surface (23).

On the other hand, when the concave forming mold (2) is displaced with respect to the mold (1), the surface of the concave forming mold (2), the inner surface of the mold (1), and the molten metal (5a) are free. When the crystals grown from the solidified surface (23) and the like are going to join each other, the joining part is shredded or compressed due to displacement of the concave part forming mold (2) with respect to the mold (1) and the gap is formed. Occurs, and a healthy joint is inhibited. At this stage, the molten metal
Since (5b2) is already in a semi-solidified state, the hot water does not flow into the gap, which prevents the connection and solidification in a perfect state. as a result,
When separating the concave forming die (2) from the solidified ingot (5), the solidified metal is separated from the surface of the concave forming die (2) in a state of being attached in a burr-like manner, and the inner surface of the concave (4) is removed. Is in an extremely rough state with countless irregularities, and although the concave portion (4) can be formed, the beautiful concave portion (4) cannot be formed.

The ingot manufacturing apparatus according to claim 7 is an embodiment of the method described in claim 6, wherein the apparatus moves together with the mold (1) conveyed in one direction, and Ingot (5) immersed in the molten metal (5a) inside and solidified
Depressed (4) on free solid surface (23) of ingot (5)
A mold for forming a concave portion (2) and a mold for forming a concave portion (2)
(5a) immersed in (5a) and reciprocated to move the lifting / lowering mechanism (a) to separate from the solidified ingot (5) and the concave part forming mold (2) in parallel with the moving direction of the mold (1) Mechanism
(b) ".

An ingot manufacturing apparatus according to claim 8 is also an embodiment of the method described in claim 6, wherein the apparatus moves together with the mold (1) conveyed in one direction, and A recess forming die (2) which is separated from the ingot (5) immersed and solidified in the molten metal (5a) and forms the recess (4) in the free solidified surface (23) of the ingot (5); The straight part is disposed parallel to the moving direction of the mold (1), the part of the straight part on the mold (1) side moves together with the mold (1), and the concave part forming mold (2) is attached. And an endless belt (40). "

An ingot manufacturing apparatus according to claim 9 is an embodiment of the method described in claim 5, wherein “the molten metal (5 a) in the mold (1) conveyed in one direction is used. A concave forming mold (2) that is immersed and separates from the solidified ingot (5) to form a concave (4) in the free solidified surface (23) of the ingot (5), and the circular orbit is a mold (1). ) Is arranged in parallel with the moving direction of the concave portion forming die (2) and a circular motion mechanism (c) for circularly moving the attached concave forming die (2) along the circular orbit. Features.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described sequentially according to the illustrated embodiment. First, the structure of the first embodiment of the manufacturing apparatus of the present invention shown in FIGS. 1 to 4 will be described, and then the second and third embodiments will be sequentially described. In the description of the second and third embodiments,
In order to avoid the complexity of the description, parts different from the first embodiment will be mainly described.

Reference numeral (15) denotes a gantry installed above the mold (1), and a plate (25) is placed on the gantry (15) in parallel with the moving direction of the mold (1). On the plate (25), two truck rails (26) are arranged in parallel with the moving direction of the mold (1).

On the carriage rail (26), a movable carriage (6)
The traveling cart (6) can be reciprocated on the truck rail (26) by a traveling roller (6a) attached to the traveling cart (6).

An elevating cylinder (7) constituting the elevating mechanism (a) is mounted downward on the upper surface of the movable trolley (6), and the cylinder rod (9) is further downwardly moved from the elevating cylinder (7). ) Protrudes and sinks. At the lower end of the cylinder rod (9), a horizontal plate part (11b) of a mold holding base (11) having a T-shaped cross section is attached, and on both sides of the cylinder rod (9), a movable carriage (6) and a mold holding body. A guide rod (10) connecting the table (11) is provided. The mold holding base (11) moves up and down while being guided along the guide rod (10), and the mold holding base (11) is maintained horizontal.

The vertical plate portion (11a) of the mold holder (11)
Has a cooling air blower pipe (12) attached thereto, and an air nozzle (13) extends downward from the lower surface of the cooling air blower pipe (12), and the tip of the air nozzle (13) is inserted into the recess forming mold (2). Has been inserted. Therefore, the cooling air of the cooling air blower pipe (12) passes through the air nozzle (13), is blown into the concave forming die (2), and cools the concave forming die (2).

The vertical plate (11) of the mold holder (11)
The fixing plate (2a) of the recess forming die (2) is attached to (a). In the present embodiment, three recess forming dies (2) are installed in accordance with the interval of the mold (1) described later, but the number is not limited to the present invention, and may be one. Alternatively, a plurality other than three may be used. Here, three cases will be described as representative examples of the present invention.

The concave forming die (2) has a substantially pentagonal hollow cross section with an upper opening, and the substantially V-shaped bottom is immersed in the molten metal. The width of the concave portion forming mold (2) is slightly smaller than the inner size of the mold (1) described later. Of course, it is possible to make them the same size.However, considering the precision of this device, the width of the recess forming die (2) should be slightly smaller than the inner size of the mold (1) as described above. It is preferable in inserting and removing from the mold (1). The material is preferably a material that does not react with aluminum, such as ceramics, because the ingot (5) is aluminum. .

On the other hand, a reciprocating cylinder (8) constituting a reciprocating moving mechanism (b) is arranged on the plate (25) on the side opposite to the moving carriage (6). A cylinder rod (8a) is coupled to the front of the moving trolley (6),
Moving cart by operating the reciprocating cylinder (8)
(6) can be reciprocated along the bogie rail (26). A moving trolley (6), a reciprocating cylinder (8), a lifting cylinder that reciprocates on the trolley rail (26).
(7) and the like constitute the first embodiment of the mold moving mechanism (3).

Next, the transfer mechanism (h) of the mold transfer device for moving the mold (1) will be described. The transfer mechanism (h) includes a pair of left and right endless tracks (m), an endless track guide rail (16) for guiding the endless track (m), and a main machine base of the mold transfer device on which the endless track guide rails (16) are laid. (27).

The endless track (m) is composed of a chain member (18), a mold transfer wheel (14), and an axle (17), and the mold transfer wheel (14) rolls on an endless track guide rail (16). Moving the mold (1) in one direction. Further, the axle (17) is inserted through the center of the mold transport wheel (14), and penetrates the overlapping portion of a chain member (18) disposed inside and outside the mold transport wheel (14). The members are joined to bendable.

The diameter of the mold conveying wheel (14) is the same as that of the chain member (1).
The limit operation bar (21) is moved up and down by sliding the dog (20) into contact with the mold conveying wheel (14) and the chain member (18) as described later. Also,
From the upper edge of the inner chain member (18), insert the mold mounting part (1
9) is extended, and the mold mounting portions (19) are respectively connected to the ends of the mold (1) disposed between the endless tracks (m) on the left and right sides.

The plane shape of the mold (1) is rectangular, and
In order to supply hot water to (5a), a substantially rectangular cavity (1a) having an upper surface opening is provided. And ingot (5)
Are provided on the long side and the short side.

Next, the structure of the detecting device for confirming the moving position of the mold (1) will be described. A limit operation bar (21) is attached to the gantry (15) so as to be able to move up and down.The lower end of the limit operation bar (21) has a downwardly extending half-moon dog (2).
0) is provided. The dog (20) slides on the upper surfaces of the mold conveying wheel (14) and the chain member (18), and moves up and down according to the shape of the endless track (m).

A lever of a limit switch (22) is disposed immediately above the limit operation bar (21), and the dog (20) comes into contact with the mold transfer wheel (14) to lift the limit operation bar (21). When the lever is pressed by the limit operation bar (21), the limit switch (22) is operated, and a signal indicating that the mold transfer wheel (14) has come directly below the limit operation bar (21) is sent to the ingot manufacturing apparatus. To the CPU (not shown).

Next, the main part of the operation of the ingot manufacturing apparatus to which the present invention is applied will be briefly described. As described above, in the ingot manufacturing apparatus, a pair of left and right endless orbits (m) are driven, and a melting and holding furnace (not shown) is mounted on a mold (1) that is installed at regular intervals on the endless orbits (m). The molten metal (5a) is sequentially supplied by a dispenser (not shown). Subsequently, the mold (1) to which the molten metal (5a) is supplied moves slowly and continuously in one direction by an endless track (m) driven by a sprocket (not shown), and a concave forming mold (2). Approaching this device equipped with. Mold (1)
Is detected by the limit switch (22) as described above, and at the timing from the limit switch (22), the recess forming die (2) moves in a rectangular motion as described later, that is, from the home position. A series of operations of lowering, moving for three pieces moving together with the mold (1), raising, and returning to the home position are repeated.

When the mold (1) to which the molten metal (5a) is supplied moves directly below the present apparatus provided with the mold (2) for forming a concave portion,
As described above, the dog (20) comes into contact with the mold transport wheel (14) to activate the limit switch (22). As a result, three molds filled with molten metal (5b1) immediately below the three concave forming molds (2)
It detects that (1) has moved. (At the beginning of the operation, the mold (1) filled with the molten metal (5b1) may be 1 or 2 immediately below the three concave forming dies (2).)
Although (5a), (5b1), (5b2), and (5b3) are used properly, the order in which the temperature of the hot water gradually decreases and solidification proceeds is shown. A fully solidified ingot is shown in (5).

Based on the detection signal, the lifting cylinder (7)
Is operated to lower the concave forming die (2) from the home position, and insert the V-shaped portion at the tip of the concave forming die (2) into the molten metal (5a). Air nozzle (13) inside the concave forming die (2)
Cooling air is constantly blown from the
(2) is cooling.

The V-shaped portion at the tip of the concave forming die (2) is molten metal.
When inserted into (5b1), the reciprocating cylinder (8) is subsequently operated, and the movable carriage (6) in which the recess forming die (2) is disposed via the elevating cylinder (7) is used as a mold ( Move at the same speed as 1).
Therefore, no relative displacement occurs between the concave portion forming mold (2) and the mold (1). And during this time, the molten metal in the mold (1) is (5b1)-(5b
It continues to cool down to 3), crystal growth occurs from the periphery of the concave forming die (2), the inner peripheral surface of the mold (1), the exposed surface of the molten metal (5b1), grows toward the inside, gradually The liquid portion will be reduced.

Then, according to the cooling, the molten metal (5b1) in the mold (1)
In this case, the crystal grows to a semi-solid state (5b2), and further solidification progresses (5b3) to form an ingot (5) gradually. (2)
Moves at the same speed as the mold (1), so that there is no relative displacement between them as described above. This means that sound growth of the crystal in the mold (1) is not impaired, and the molten metal (5b1) in the mold (1) is completely solidified when the movement of three pitches is completed, It becomes a healthy ingot (5).

From the immersion of the recess forming die (2) in the molten metal (5b1) to the separation from the ingot (5) formed by solidification, three pitches are counted. Each time the mold transport wheel (14) passes through the dog (20), the dog (20) is lifted, and the limit switch (22) is moved by the raising operation of the limit operation bar (21) to which the dog (20) is attached. It is activated and this is counted by the CPU. Based on the thus obtained count number, it is confirmed how many templates (1) have passed. When the counted number reaches 3, the lifting cylinder (7) operates in the reverse direction to lift the concave forming die (2) and remove it from the ingot (5). Since the ingot (5) is formed in a healthy state, a clear recess (4) is formed in the trace of the recess forming die (2).
Is formed.

When the raised concave forming die (2) reaches the top dead center, the reciprocating cylinder (8) operates to push back the movable carriage (6) and return the concave forming die (2) to the home position.
Then, it waits for the next mold (1) to be sent.

The ingot (5) thus formed is
On the downstream side, it is taken out of the mold (1) and laminated. Looking at the shape of the ingot (5), a triangular prism-shaped recess (4) is formed at the center of the free solidified surface (23) of the ingot (5) as shown in FIG. Rib between (4) and long side (24)
When (4a) is present, as shown in FIG. 7 (c), when there is no rib (4a) as shown in FIG. 7 (b) and the concave portion (4) is formed up to the long side (24), as shown in FIG. Multiple ingots in the longitudinal direction of the ingot (5)
When (three in this case) concave portions (4) are formed, a plurality of (of course, one) concave holes are provided as the concave portions (4) as shown in FIG. 7 (e). Various cases such as cases are assumed, and in each case, it depends on the shape of the concave portion forming mold (2). In this embodiment, the one shown in FIG. 7A is manufactured. In this case, the location of the concave portion (4) is reinforced by the presence of the rib (4a), thereby preventing the ingot (5) from breaking from the concave portion (4) when the ingot (5) is stacked or transported in a stacked state.
Although the depth and width of the concave portion (4) are not particularly defined,
Both the depth and the width are preferably at least half of the thickness and width of the ingot (5).

Next, a second embodiment will be described with reference to FIG. In this case, the mold moving mechanism (3) of the recess forming mold (2) is different from that of FIG. That is, in the case of the first embodiment, the mold movement mechanism (3) is a rectangular movement combining the lifting mechanism (a) and the reciprocating movement mechanism (b), but in this case, the endless belt (40) is used. This is used to drive the recess forming die (2).

That is, the concave forming dies (2) are arranged at regular intervals on the outer periphery of the endless belt (40), and the endless belt (40) moves continuously with the mold (1). Endless belt (40)
Endless belt (40) for the mold (1) that has moved just below
Rotate synchronously to immerse the tip of the concave forming die (2). Then, as described above, the mold and the mold for concave portion formation (2) are continuously moved without relative displacement between the mold and (1), and the endless belt (40)
At the end of the step, the mold (2) for forming a concave portion is detached. The detached concave forming die (2) rotates together with the endless belt (40) and returns to the start position of the endless belt (40) immersed in the mold (1), and the next mold
Wait for (1).

Finally, a third embodiment of the present invention will be described with reference to FIG. In this case, a circular motion mechanism (c) that performs a circular motion is used instead of the endless belt (40). The circular orbit is arranged in accordance with the moving direction of the mold (1), and the concave forming die (2) arranged at regular intervals on the outer periphery of the circular motion mechanism (c).
Moves synchronously and continuously with the mold (1) conveyed in one direction,
At the beginning, it is immersed in the molten metal (5b1), moves along a circular orbit, and separates from its solidified state (5b3) at the end.

In this case, since the concave portion forming die (2) moves along a circular motion, a relative displacement occurs with the mold (1) that moves linearly. As a result, sound solidification hardly occurs around the concave portion (4), and the burr-like metal adheres to the concave portion forming die (2).
It is easy to occur on the immersion surface. Therefore, the formed recess (4)
Has an uneven surface, but the formation of the concave portion (4) is ensured.

[0045]

According to the ingot of the present invention, the concave portion formed in the free solidified surface serves as a cutting edge when the ingot is hammered, and the ingot can be easily formed without using a cutting machine at a work site. Can be cut. In addition, by forming a concave portion on the free solidified surface, the mold that is already in operation can be used as it is, so that the equipment cost for manufacturing the ingot can be significantly reduced. Was.

Further, the presence of the ribs serves as a reinforcement for the concave portion forming portion of the ingot body, and can prevent the ingot from being broken from the concave portion when the ingot is transported in a stacked state. By making the shape of the recess into a triangular prism, the impact load can be concentrated on the groove bottom of the recess when the ingot is hammered, and the ingot can be cut easily.

When the ingot is manufactured, the solidification of the molten metal can be prevented by moving the concave forming mold together with the molten metal while maintaining a state in which no relative displacement occurs between the mold and the concave forming mold. It can be ensured, and after the mold release, a beautiful concave portion can be obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a main part of a manufacturing apparatus according to the present invention.

FIG. 2 is a vertical sectional view of a main part of the manufacturing apparatus according to the present invention.

FIG. 3 is a main part cross-sectional view of the manufacturing apparatus according to the present invention.

FIG. 4 is a flow chart of a mold according to the first embodiment of the present invention.

FIG. 5 is a flow chart of a mold according to a second embodiment of the present invention.

FIG. 6 is a flow chart of a mold according to a third embodiment of the present invention.

FIG. 7 is a perspective view of an ingot according to the present invention.

[Explanation of symbols]

 (1) ... mold (2) ... concave forming die (3) ... mold moving mechanism (4) ... concave (5) ... ingot (5a) ... molten metal (5b1)-(5b3) ... solidification state is progressing Molten metal (6)… Movable carriage (7)… Elevating cylinder (8)… Reciprocating cylinder (9)… Cylinder rod (10)… Guide rod (11)… Mold holder (12)… Cooling air blower tube (13)… Air nozzle (14)… Mould transport wheel (15)… Base (16)… Endless track guide rail (17)… Axle (18)… Chain member (19)… Mould mounting part (20)… Dog (21)… Limit Operation bar (22)… Limit switch

Claims (9)

[Claims] 1. An ingot, wherein a concave portion is formed on a free solidified surface of an ingot body. 2. The ingot according to claim 1, wherein a rib is formed between a long side of the ingot body and the concave portion. 3. The ingot according to claim 1, wherein the recess has a triangular prism shape, and the opening width gradually decreases as approaching the bottom of the recess. 4. The ingot according to claim 1, wherein a plurality of recesses are formed in a longitudinal direction of the ingot body. 5. A mold is transported in one direction, a molten metal is poured into the mold, and a concave forming die is inserted into the molten metal and moved together with the molten metal. After the molten metal is solidified, the concave is formed from the ingot in the molded mold. A method for producing an ingot, comprising removing a forming die. 6. A mold is transported in one direction, a molten metal is poured into the mold, and a concave forming die is inserted into the molten metal, so that no relative displacement occurs between the mold and the concave forming mold. A method for manufacturing an ingot, characterized in that a concave forming die is moved together with a molten metal while maintaining a state, and after the molten metal is solidified, the concave forming die is detached from an ingot in a mold. 7. A recess forming die which moves together with the mold conveyed in one direction, is immersed in the molten metal in the mold, separates from the solidified ingot, and forms a recess on a free solidified surface of the ingot, and a recess. The forming mechanism is immersed in the molten metal, and it is composed of an elevating mechanism that separates it from the solidified ingot, and a reciprocating mechanism that reciprocates the concave forming mold in parallel with the moving direction of the mold. Characteristic ingot manufacturing equipment. 8. A concave forming die which moves together with the mold conveyed in one direction, separates from the solidified ingot immersed in the molten metal in the mold, and forms a concave on the free solidified surface of the ingot, and a straight line thereof. The part is arranged parallel to the moving direction of the mold, and the mold side part of the straight part moves together with the mold, and is constituted by an endless belt to which the concave forming mold is attached. Ingot manufacturing equipment. 9. A concave forming die for immersing in a molten metal in a mold being conveyed in one direction, separating from a solidified ingot and forming a concave on a free solidified surface of the ingot, and a circular orbit for the concave orbit. An ingot manufacturing apparatus, which is arranged in parallel with the moving direction of the ingot, and comprises a circular motion mechanism for circularly moving the attached concave forming die along the circular orbit.