JPH06240380A - Production of alloy product - Google Patents

Abstract

PURPOSE:To provide the method for producing an alloy product capable of obtaining an alloy product of high quality without requiring excess handling time and energy. CONSTITUTION:An allay raw material is melted in a melting furnace to remove away impurities. Then, being in the melting state, it is fed to the approximately intermediate part in the transferring direction of a cylinder at which a screw is rotatively driven, and added substance is fed from a hopper to the upstream side in the transferring direction of the cylinder. On the other hand, the temp. from the approximately intermediate part in the transferring direction of the cylinder to the down stream side is held above the solidus temp. of the allay raw material or below its liquidus temp. by a temp. controlling device. Then, the screw is driven and shearing operation is exerted while the alloy raw material and added substance are mixed and transferred, which is then discharged to a die to obtain an alloy product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an alloy product utilizing the properties of a low melting point alloy such as zinc alloy, aluminum alloy, copper alloy, lead alloy, magnesium alloy, etc. The alloy raw material is supplied to the cylinder in which the screw is driven to rotate, and the screw is driven while transferring the screw while keeping the temperature below the liquidus temperature above the solidus temperature of the alloy raw material, and the shearing action is applied. The present invention relates to a method for manufacturing an alloy product by discharging into an alloy product.

[0002]

2. Description of the Related Art The method for producing a thixotropic alloy is well known in the art without mentioning the name of the literature. When the alloy raw material is vigorously stirred in a solid-liquid coexisting state, the formation of resinous crystals, that is, dendrites is suppressed, and the degenerated fracture is caused. It is possible to obtain a liquefied substance in which a fine granular solid of resinous crystals and a liquid coexist. By forming and solidifying the liquid-like substance in the solid-liquid coexisting state in a short time, a product having the alloy structure in the liquid state can be obtained. Since this product does not exhibit brittleness and has a small shrinkage rate due to solidification, an alloy product having few shrinkage cavities and good mechanical properties and shape accuracy can be obtained. A specific method for producing an alloy product utilizing such properties of the lenticular substance is disclosed in, for example, Japanese Patent Publication No. 1-33541 and 2-15.
620 and the like. These publications include
A manufacturing method using an injection molding machine or an extruder is shown. That is, the injection molding machine is composed of a temperature controllable screw cylinder. The screw cylinder is equipped with a preheating hopper. The preheating hopper stores the alloy raw material crushed to an appropriate size. The preheat hopper can also be filled with an inert gas so as to prevent oxidation of the alloy raw material. Therefore, when the screw is rotationally driven and the preheated alloy raw material is supplied to the cylinder from the preheating hopper, the alloy raw material is sequentially moved to the cylinder tip portion by the screw. At this time, the alloy raw material is sheared by frictional contact between the inner surface of the cylinder and the outer surface of the screw, or frictional contact between the alloy raw materials.
The temperature rises due to heating from the outside of the cylinder, and the melting point rises above the solidus temperature of the alloy raw material. After that, the temperature of the screw cylinder is controlled and maintained at the solid-liquid coexistence temperature which is higher than the solidus temperature and lower than the liquidus temperature. The alloy raw material in the solid-liquid coexisting state is discharged from the tip of the screw / cylinder to the forming die to obtain an alloy product.

[0003]

Even in the above conventional manufacturing method, the alloy raw material is subjected to shearing action due to frictional contact between the inner surface of the cylinder and the outer surface of the screw or the frictional contact between the alloy raw materials. The advantage of being maintained above the solidus temperature by just heating from the outside is recognized. Further, since the screw cylinder is in an airtight state and the preheating hopper is filled with an inert gas, there is an advantage that the oxidation phenomenon of the alloy raw material does not occur.
However, according to the above conventional manufacturing method, the properties of the product may be deteriorated in some cases. For example, alloy raw materials are supplied in the solid state, but if impurities are mixed in this raw material, or if oxides are generated on the surface of the solid alloy raw materials, these impurities will cause If it is included, the mechanical properties and corrosion resistance of the alloy product may deteriorate. If the content of impurities is known, or if the chemical and physical properties of impurities are known, the quality characteristics of the product can be predicted to some extent, but the presence or absence of impurities and their properties are unknown. As a general matter, there is a drawback that only products with unstable quality characteristics can be obtained. However, it is possible to remove impurities from the alloy raw material in advance. However, to remove impurities,
The entire amount of the alloy raw material must be selected as a foreign matter, melt-refined, cooled and solidified, and then re-crushed, which causes another problem that requires extra labor and energy. Further, according to the conventional manufacturing method, since the preheated alloy raw material is simply supplied to the cylinder, a relatively large frictional force and shearing force must be applied in order to melt it, and the screw becomes large. There is also a drawback. Further, although a product with the characteristics of the alloy raw material stored in the preheating hopper can be obtained, there is also a problem that a product with a characteristic having a change in characteristics cannot be easily obtained.

Therefore, an object of the present invention is to provide a method for producing an alloy product which can obtain a high quality alloy product without requiring extra labor and energy, and another invention is the above. In addition to the purpose, it is an object of the present invention to provide a method for producing an alloy product that can easily change the properties of the alloy product.

[0005]

In order to achieve the above-mentioned object, the present invention melts an alloy raw material to remove impurities, and in a molten state, supplies it to a cylinder in which a screw is rotationally driven, A structure in which a shearing action is applied while driving the screw to transfer the alloy raw material in a state of being kept above the solidus temperature and below the liquidus temperature of the raw material, and then discharged to a molding die to obtain an alloy product. To be done. In the invention according to claim 2, the alloy raw material is melted to remove impurities, and in a molten state, the screw is supplied to a substantially intermediate portion of the cylinder in which the screw is rotationally driven, and the additive is added to the cylinder. It is supplied to the upstream side in the transfer direction, and the screw is driven in a state where the downstream side from the substantially middle portion in the transfer direction of the cylinder is maintained at the liquidus temperature or higher above the solidus temperature of the alloy raw material, A shearing action is applied while mixing and transporting the alloy raw material and the additive, and then the alloy raw material is discharged into a molding die to obtain an alloy product, and the invention according to claim 3 is the additive according to claim 2, It is composed of any one of solid crushed material, pellet, granule, powder, fibrous material, or two or more kinds.

[0006]

EXAMPLES Alloy raw materials used for carrying out the present invention include:
For example, zinc alloy, aluminum alloy, copper alloy, lead alloy,
Examples include magnesium alloys. The alloy itself is selected as the additive, and different kinds of additives are also selected. When the additives are different, for example, GF, that is, glass fiber or the like is used for the zinc alloy. Similarly, additives for aluminum alloys are silicon carbide S
iC, GF for copper and lead alloys, and alumina AI ₂ O ₃ for magnesium alloys. And these additives, solid crushed material, pellets, granules, powder,
It is composed of any kind or two or more kinds of fibrous bodies. When the additives are a mixture, they are mixed in advance. An alloy product can be obtained by using the alloy raw material as described above or an alloy material composed of an alloy raw material and an additive, but representatively, a zinc alloy and an aluminum alloy molded product are obtained below. An example will be described.

The alloy manufacturing apparatus used for carrying out the present invention is
As shown in FIG. 1, it is roughly configured by an injection molding machine 1, an alloy raw material supply device 20, an additive supply device 30, and a mold 40. The injection molding machine 1 is equipped with a uniaxial or biaxial screw 2 as is well known. The screw 2 is rotationally driven by a driving device 3 including a reduction gear, an injection ram, and the like, and is also driven in the axial direction. The cylinder 4 in which the screw 2 is provided has a predetermined length, and a first supply opening 8 for supplying the alloy raw material is provided at a position closer to the drive device 3 side from the center thereof. In the vicinity of the driving device 3, second supply openings 9 for supplying solid-state additives are formed. An alloy raw material supply pipe 22 and an additive supply pipe 33, which will be described later, are connected to these supply openings 8 and 9, respectively. On the outer periphery of the cylinder 4,
The temperature adjusting devices 5 and 5 including resistance heaters or induction heaters are provided over substantially the entire length thereof, and the temperature inside the cylinder 4 can be controlled by these temperature adjusting devices 5 and 5. A nozzle 6 connected to an injection hole 7 is provided at one end of the cylinder 4, and a stop valve 10 is provided in the injection hole 7. The other end of the cylinder 4 is connected to the casing of the drive device 3. As is well known, the mold 40 is composed of a fixed mold 41 and a movable mold 42, and a sprue 43 is formed on the fixed mold 41. The sprue 43 is connected to the cavity 44.

The alloy raw material supply device 20 comprises a melting furnace 21. The alloy raw material supply pipe 22 is opened downward at a substantially intermediate height position in the melting furnace 21. The alloy raw material supply pipe 22 goes out of the melting furnace 21 and is connected to the first supply opening 8 of the cylinder 4. The heating devices 23, 23 are provided on the outer peripheral portion of the portion of the alloy raw material supply pipe 22 that is exposed to the outside, and the stop valve 2 is provided near the melting furnace 21.
4 are provided respectively. The melting furnace 21 is provided with a lid 25, and the inside of the furnace can be made an inert gas atmosphere.

The additive supply device 30 has a hopper 31 provided with, for example, a rotary feeder for controlling the supply amount of the additive.
And a screw conveyor 32 for transferring the additive supplied from the hopper 31, and a supply pipe 33 having one end connected to the screw conveyor 32 and the other end connected to the second supply opening 9 of the cylinder 4. It consists of and. The screw conveyor 32 is driven by a motor 34. The number of revolutions is controlled to control the supply amount of the additive.

Next, an example of manufacturing a zinc alloy by the above manufacturing apparatus will be described. First, in the melting furnace 21, a zinc alloy, which is an alloy raw material, is melted at a liquidus temperature of 232 ° C. or higher.
Then, impurities contained in the zinc alloy and having a smaller specific gravity than the zinc alloy, such as zinc oxide, float up as dross 26, and impurities having a large specific gravity become sludge 27 and settle at the bottom of the melting furnace 21. Therefore, the melting furnace 21
A molten zinc alloy containing no impurities can be obtained at a position approximately at the intermediate height. Next, in a state in which the screw 2 is pushed to the tip of the cylinder 4, the temperature controller 5 is driven to heat the cylinder 4 to a solidus temperature of 200 ° C. or higher of the zinc alloy, and after heating, The solidus temperature is controlled to 200 ° C or higher and the liquidus temperature is controlled to 232 ° C or lower. On the other hand, the heating device 23 of the alloy raw material supply device 20 is operated to set the alloy raw material supply pipe 22 and the stop valve 24 to the liquidus temperature 232 of the zinc alloy.
Heat to above C. Open stop valve 24. Then,
Since the alloy raw material supply pipe 22 is opened at a position approximately at an intermediate height of the melting furnace 21, the molten zinc alloy containing no impurities is passed from the melting furnace 21 to the alloy raw material supply pipe 22 through the first opening 8 and the cylinder. 4 is supplied to a substantially middle portion. Then, by driving the screw 2, the inside of the cylinder 4 is transferred to the tip portion.

The zinc alloy is kept at a temperature above the solidus temperature and below the liquidus temperature during the transfer to the tip portion in the cylinder 4 and is in a solid-liquid mixed state, and the gap between the screw 2 and the cylinder 4 is kept. Since it is filled and transferred, it is vigorously mixed and stirred by frictional contact. As a result, generation of dendrites in the zinc alloy is prevented, and the zinc alloy is brought into a quiescent state, and the zinc alloy is homogeneously mixed and has a high affinity. When the zinc alloy reaches the tip of the screw 2, the stop valve 10 is closed and the injection hole 7 is closed. As a result, the molten zinc alloy is stored in the tip end space 11 of the cylinder 4. The storage amount increases sequentially due to the zinc alloy that is continuously sent. The screw 2 retracts according to the increase amount. Next, the nozzle 6 of the injection molding machine 1 is closed with the mold 40.
The sprue 43 is brought into close contact with the opening portion of the sprue 43 to bring the spout 43 and the injection hole 7 into communication with each other. The stop valve 10 is opened when the storage amount of the zinc alloy reaches the product formation required amount. Then, the driving device 3 is operated to push out the screw 2 in the tip direction. As a result, the zinc alloy passes through the injection hole 7, the stop valve 10 and the sprue 43 from the tip end space 11 and the fixed mold 4
It is injected into the cavity 44 of 1 and the movable mold 42. The zinc alloy injected into the mold 40 fills the cavities 44, and is cooled and solidified in the shape of the cavities 44 in a sick state to be an alloy product. The movable mold 42 is opened to take out the alloy product.

According to this manufacturing method, since impurities are removed in the melting furnace 21, a homogeneous and high-quality zinc alloy product can be obtained. Further, since impurities are removed when the zinc alloy is melted to be supplied to the injection molding machine 1,
There is no energy loss for removing the impurities, and there is an effect that the labor for removing the impurities can be reduced. Further, conventionally, the entire amount of the alloy raw material was melted by the shearing energy of the screw and the heat applied from the outside of the cylinder, so that the driving torque of the screw had to be increased, and the manufacturing apparatus was enlarged. According to this embodiment, the driving torque can be reduced, the cylinder can be shortened, and the entire structure can be made compact.

Next, an example of producing an aluminum alloy product containing an additive will be described. First, in the melting furnace 21, an aluminum alloy is melted at a liquidus temperature of 660 ° C. or higher. Then, the impurities contained in the aluminum alloy and having a smaller specific gravity than the aluminum alloy become the dross 26 and float up, and the impurities having a larger specific gravity become the sludge 27 and settle on the bottom of the melting furnace 21. Therefore, a molten aluminum alloy containing no impurities can be obtained at a substantially intermediate height position of the melting furnace 21. On the other hand, for example, SiC powder is stored in the additive supply device 30. With the screw 2 pushed out to the tip of the cylinder 4,
The temperature controllers 5 and 5 are driven to heat the cylinder 4 to a solidus temperature of aluminum alloy 548 ° C. or higher, and after heating, the solidus temperature of aluminum alloy 548 ° C. or higher and the liquidus temperature 660. Control to C or less. On the other hand, the heating device 23 of the alloy raw material supply device 20 is activated to operate the alloy raw material supply pipe 22.
The stop valve 24 is heated to a liquidus temperature of 660 ° C. or higher of the aluminum alloy. The screw 2 is rotationally driven by the drive device 3. On the other hand, the screw conveyor 32 is driven by the motor 34 of the additive supply device 30. Then, S
The iC is supplied from the hopper 31 into the cylinder 4 through the supply pipe 33 and the second opening 9 in an amount controlled by the rotary folder so as to have a mixing ratio corresponding to the supply amount of the aluminum alloy. Since the screw 2 is rotationally driven, it is transferred in the cylinder 4 toward the tip. Since the additive SiC is filled in the gap between the screw 2 and the cylinder 4 and transferred to the tip, the shearing action by frictional contact is applied and the surface is polished and activated.

When the SiC reaches the first opening 8, the stop valve 24 of the alloy raw material supply pipe 22 is opened in time. Then, since the alloy raw material supply pipe 22 is opened at the substantially intermediate height position of the melting furnace 21, the aluminum alloy in a molten state containing no impurities is melted from the melting furnace 21 into the first opening 8 by the alloy raw material supply pipe 22. And is supplied to a substantially middle portion of the cylinder 4. Then, by driving the screw 2, the inside of the cylinder 4 is transferred to the tip end together with the additive SiC.
In the molten aluminum alloy, since SiC is transferred, a part of it penetrates into Si, but backflow is blocked and transferred to the tip. After that, it is continuously supplied.

Aluminum alloy and SiC are used in cylinder 4
While being transferred to the tip of the screw, it is kept above the solidus temperature and below the liquidus temperature and is in a solid-liquid mixed state.
Since it is transferred while filling the gap between the cylinder 4 and the cylinder 4, a shearing action due to frictional contact is added, and the mixture is vigorously mixed and stirred. As a result, the generation of dendrites in the aluminum alloy is prevented and the aluminum alloy material is brought into a sickling state, and the aluminum alloy material is homogeneously mixed and has a high affinity.

When the aluminum alloy material reaches the tip of the screw 2, the stop valve 10 is closed and the injection hole 7 is closed. As a result, the molten aluminum alloy is stored in the tip end space 11 of the cylinder 4, and the amount of storage is sequentially increased by the continuously fed aluminum alloy. The screw 2 retracts according to the increase amount. Next, the nozzle 6 of the injection molding machine 1 is brought into close contact with the opening of the sprue 43 of the closed mold 40 to bring the injection hole 7 and the sprue 43 into communication with each other. When the storage amount of the aluminum alloy reaches the product formation required amount, the stop valve 10 is opened to drive the drive device 3
To push the screw 2 toward the tip. As a result, the aluminum alloy is injected from the tip end space 11 into the injection hole 7,
It is injected into the cavity 44 of the fixed mold 41 and the movable mold 42 through the stop valve 10 and the sprue 43. Mold 4
The aluminum alloy injected to 0 fills the cavities 44 and is cooled and solidified in the shape of the cavities 44 to be an alloy product in the state of being in a twisted state. The movable mold 42 is opened to take out the alloy product.

According to this embodiment, various effects can be obtained. For example, in addition to the effect of the above-described embodiment, since the additive in the solid state is supplied to the driving device 3 side, the driving device 3 is not thermally adversely affected even if the aluminum alloy is supplied to the cylinder 2 in a molten state. Is obtained. Further, a desired alloy product suitable for the purpose can be obtained by changing the mixing amount and quality of the additives. When the additive is the alloy itself, the additive may contain impurities. However, since the amount of the additive is small, the amount of impurities is small and the quality of the product is not deteriorated. When the amount of impurities is large, the aluminum alloy refined in the melting furnace 21 may be solidified and crushed into an additive. At this time, since the amount of the additive is small, the work required to obtain the additive can be small.

Next, an example of an alloy production apparatus equipped with an extruder will be described.
An example will be described with reference to FIG. 2, and an aluminum alloy product is obtained by using the alloy manufacturing apparatus to configure the alloy material from an aluminum alloy and an additive SiC. The extruder used in this example is structurally well known in the prior art, and differs from the injection molding machine shown in FIG. 1 in that the screw is not extruded in the axial direction. Therefore,
The same reference numeral or the same numeral is attached to the same member by adding a "dash" to omit duplicate description. Further, the alloy raw material supply device 20, the additive supply device 30, the mold 40, etc. are substantially the same as those in the embodiment shown in FIG. The plunger device 50 is a device that pushes the molten alloy material generated by the extruder 1 ′ into the mold 40, and includes a cylindrical cylinder 52. The cylinder 52 is arranged vertically as shown. An alloy material supply port 54 is provided at a substantially middle portion of the cylinder 52, an extrusion hole 55 is provided at a tip end portion thereof, and temperature control devices 56, 56 capable of temperature control are provided at an outer periphery thereof. Therefore, when the plunger 51 is driven by the driving device 53, the alloy material is kept in a molten state and the extrusion hole 5
It is extruded from 5 into the mold 40.

Next, an example of manufacturing an aluminum alloy product by the above alloy manufacturing apparatus will be described. The alloy raw material supply device 20 and the additive supply device 30 operate as described above. The temperature controllers 5 and 5 are driven to heat the cylinder 4 to the solidus temperature of the aluminum alloy or higher, and after heating, it is controlled to the solidus temperature of the aluminum alloy or higher and the liquidus temperature or lower. On the other hand, the heating device 23 of the alloy raw material supply device 20 is operated to heat the alloy raw material supply pipe 22 and the stop valve 24 to the liquidus temperature of the aluminum alloy or higher. Next, the driving device 3 ′ rotationally drives the screw 2 ′, while the motor 34 of the additive supply device 30 drives the screw conveyor 32.
To drive. Then, the aluminum alloy and SiC are supplied to the cylinder 4. Then, similarly to the above-mentioned embodiment, the aluminum alloy and SiC are transferred to the tip portion inside the cylinder 4. In the meantime, since it is kept above the solidus temperature and below the liquidus temperature and is in a solid-liquid mixed state, and is transferred while filling the gap between the screw 2 and the cylinder 4, shearing action by frictional contact is added, Stir vigorously. As a result, the generation of dendrites in the aluminum alloy is prevented and the aluminum alloy material is brought into a sickling state, and the aluminum alloy material is homogeneously mixed and has a high affinity. Then, it is sequentially supplied from the cylinder 4 via the discharge pipe 13 and the alloy material supply port 54 to the space 57 of the cylinder 52 in a state where the plunger 51 is pulled down, and then stored.

Next, the tip end opening portion of the push-out hole 55 of the cylinder 52 is brought into close contact with the opening portion of the sprue 43 of the closed mold 40 so that the push-out hole 55 and the sprue 43 are communicated with each other. Then, when the storage amount of the aluminum alloy material reaches the required formation amount of the alloy product, the drive device 53 is operated to push up the plunger 51. Then, the aluminum alloy material is extruded from the cylinder 52 through the extrusion hole 55 and the sprue 43 into the cavity 44 of the mold 40. As described above, the aluminum alloy injected into the mold 40 fills the cavities 44 and is cooled and solidified in the shape of the cavities 44 in the state of being bent to be an alloy product. The movable mold 40 is opened to take out the alloy product. In the above embodiment, the plunger device 50 is arranged in the vertical direction, but it is arranged in the horizontal direction by providing a shutoff valve between the tip of the cylinder 4 and the mold 40 to prevent the molten alloy material from flowing down. You can also do it. Also, the mold 40
Is also arranged to move the mold in the vertical direction, but it is also possible to perform the mold clamping movement in the horizontal direction by connecting the inlet of the mold 40 from the tip of the cylinder 4 with a connecting pipe.

In each of the above-described manufacturing methods, an inert gas is supplied into the cylinder 4 of the injection molding machine 1 or the extruder 1 ', and the cylinder 4 between the first opening 8 and the second opening 9 is supplied. Make the interior an inert atmosphere. As a result, the first and second
The generation of impurities due to the oxidation of the molten alloy material and additives near the openings 8 and 9 is prevented.

[0022]

According to the invention as set forth in claim 1, the alloy raw material is melted to remove impurities, and in a molten state, the screw is supplied to a cylinder which is rotationally driven. The effect peculiar to the present invention that a product is obtained is obtained. Further, when the alloy is melted to supply it to the cylinder, the impurities are removed, so that there is no energy loss for removing the impurities, and there is also an effect that the labor for removing the impurities can be reduced. Further, since the screw is supplied to the cylinder in which the screw is rotationally driven in a molten state, the driving torque of the screw can be small, and the cylinder used for carrying out the present invention can be shortened and the entire structure can be made compact. According to the second aspect of the invention, the alloy raw material is melted to remove impurities, and in a molten state, the screw is supplied to a substantially intermediate portion in the transfer direction of the cylinder in which the screw is rotationally driven, and the additive is added to the cylinder. Since it is supplied to the upstream side in the transfer direction, in addition to the above-mentioned effects, there is an effect that even if the alloy is supplied to the cylinder in a molten state, the upstream device, for example, the drive device is not adversely affected by heat. Also, by changing the mixing amount and quality of additives,
A desired alloy product suitable for the purpose can be easily obtained. According to the invention of claim 3, the additive is composed of any one of solid crushed material, pellets, granules, powder and fibrous material, or two or more kinds thereof, so that the alloy in a molten state It is effective in obtaining a thermal sealing action when supplying to the cylinder, and is convenient to handle.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing an example of an alloy product manufacturing apparatus used for carrying out the present invention.

FIG. 2 is a cross-sectional view schematically showing another example of an alloy product manufacturing apparatus used for carrying out the present invention.

[Explanation of symbols]

 1 Injection Molding Machine 2 Screw 4 Cylinder 5 Temperature Control Device 20 Alloy Raw Material Supply Device 21 Melting Furnace 30 Additive Supply Device 40 Mold

[Procedure amendment]

[Submission date] July 9, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

When the SiC reaches the first opening 8, the stop valve 24 of the alloy raw material supply pipe 22 is opened in time. Then, since the alloy raw material supply pipe 22 is opened at the substantially intermediate height position of the melting furnace 21, the aluminum alloy in a molten state containing no impurities is melted from the melting furnace 21 into the first opening 8 by the alloy raw material supply pipe 22. And is supplied to a substantially middle portion of the cylinder 4. Then, by driving the screw 2, the inside of the cylinder 4 is transferred to the tip end together with SiC as an additive.
Since SiC is transferred to the molten aluminum alloy, a part thereof penetrates into the SiC , but backflow is blocked and transferred to the tip. After that, it is continuously supplied.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Next, the tip end opening portion of the push-out hole 55 of the cylinder 52 is brought into close contact with the opening portion of the sprue 43 of the closed mold 40 so that the push-out hole 55 and the sprue 43 are communicated with each other. Then, when the storage amount of the aluminum alloy material reaches the required formation amount of the alloy product, the drive device 53 is operated to push up the plunger 51. Then, the aluminum alloy material is extruded from the cylinder 52 through the extrusion hole 55 and the sprue 43 into the cavity 44 of the mold 40. As described above, the aluminum alloy injected into the mold 40 fills the cavities 44 and is cooled and solidified in the shape of the cavities 44 in the state of being bent to be an alloy product. The movable mold 42 is opened to take out the alloy product. In the above embodiment, the plunger device 50 is arranged vertically, but it is arranged horizontally by providing a shutoff valve between the tip of the cylinder 52 and the mold 40 to prevent the molten alloy material from flowing down. You can also do it. Also, the mold 4
Although 0 is also arranged to move in the vertical direction, the mold can be moved in the horizontal direction by connecting the inlet of the mold 40 from the tip of the cylinder 4 with a connecting pipe.

Claims (3)

[Claims] 1. An alloy raw material is melted to remove impurities, and in a molten state, the screw is supplied to a cylinder in which a screw is rotationally driven, and is maintained at a temperature above the solidus temperature of the alloy raw material and below the liquidus temperature. In this state, the screw is driven to apply the shearing action while transferring the alloy raw material, and then discharged to a molding die to obtain an alloy product. 2. An alloy raw material is melted to remove impurities, and in a molten state, the screw is supplied to a substantially middle portion in the transfer direction of a cylinder in which a screw is rotationally driven, and an additive is upstream in the transfer direction of the cylinder. The alloy raw material is added to the alloy raw material by driving the screw in a state in which the downstream side from the substantially middle portion in the transfer direction of the cylinder is maintained at the solidus temperature of the alloy raw material or more and the liquidus temperature or less of the alloy raw material. A method for producing an alloy product, which comprises applying a shearing action while mixing and transferring an object and then discharging the alloy product into a molding die to obtain an alloy product. 3. A method for producing an alloy product, wherein the additive according to claim 2 is any one of solid crushed material, pellets, granules, powder and fibrous material, or two or more kinds.