CN111283201A

CN111283201A - Production equipment and production method for semi-continuous ingot making of alloy powder

Info

Publication number: CN111283201A
Application number: CN202010242329.4A
Authority: CN
Inventors: 陈云贵; 吴建勋
Original assignee: Sichuan Kejiang Light Metal Material Technology Co Ltd
Current assignee: Sichuan Kejiang Light Metal Material Technology Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-06-16
Anticipated expiration: 2040-03-31
Also published as: CN111283201B

Abstract

The invention discloses production equipment and a production method for alloy powder semi-continuous ingot making, which realize large-scale production of alloy powder semi-continuous ingot making by combining powder metallurgy and extrusion deformation processing on alloy powder, are suitable for alloy powder cold pressing semi-continuous preparation of prefabricated ingots and aluminum alloy and magnesium alloy powder hot pressing sintering semi-continuous ingot making, and have huge economic value and market prospect.

Description

Production equipment and production method for semi-continuous ingot making of alloy powder

Technical Field

The invention relates to the technical field of alloy production and forming, in particular to production equipment and a production method for semi-continuous ingot making of alloy powder.

Background

When the demand for alloys in the world is increasing, not only for iron alloys and aluminum alloys with wide application, but also for other alloys such as magnesium alloys, because of their unique advantages and great development prospects, the world is slowly climbing the stage, and for these old-fashioned alloys, the industry already has a very mature and complete production system, and for some emerging alloys, the equipment and production method for mass production are still lacking.

At present, ① produces alloy ingots with required shapes and sizes directly by a smelting and casting mode, ② prepares alloy powder firstly, then the alloy powder is pressed into the alloy ingots with required shapes by a powder metallurgy method, however, the two methods have great limitation on the large-scale production of high-strength alloy ingots.

Disclosure of Invention

The invention aims to provide production equipment and a production method for semi-continuous ingot making of alloy powder, and aims to solve the problems that the performance of a product prepared by the existing production process is low, the working procedure is complex, the production efficiency is low, and the large-scale production of alloy ingots cannot be realized. In addition, different production requirements can be met, including different alloy types, different sizes of the prefabricated alloy ingots, different forming conditions (cold pressing or hot pressing) and the like, and the method is more flexible.

The technical scheme for solving the technical problems is as follows:

a production facility for semi-continuous ingot making of alloy powder comprises: the powder feeding system, the extruding system and the back pressure system are arranged in the shell; the powder feeding system comprises: the powder storage tank and a first driving mechanism are connected with the powder storage tank and drive the powder storage tank to move in a telescopic mode along the horizontal direction; the extrusion system includes: the powder storage tank is arranged below the powder storage tank and matched with the male die, a forming through hole is formed in the bottom of the female die, and the heating and heat preservation device is arranged on the outer side of the female die; the backpressure system comprises: the ejector rod is arranged below the female die and corresponds to the forming through hole, and the third driving mechanism drives the ejector rod to move in a telescopic mode along the vertical direction.

The powder feeding system has the functions of storing, feeding and preheating the alloy powder, and realizes automatic conveying of the alloy powder and preheating and heat preservation of the alloy powder before the extrusion process. The extrusion system and the backpressure system are used for extruding and molding the alloy powder into the alloy ingot. The alloy powder is pre-pressed through a male die and a female die of an extrusion system, and then the pre-pressed alloy powder is extruded and formed from the forming through hole under the combined action of the male die and a backpressure system. Although the mode of producing the alloy ingot is extrusion molding, the extrusion mode is obviously different from the prior art: firstly, the alloy powder in the female die is pre-pressed through the matching between the female die and the male die of the extrusion system, so that the mechanical property of the alloy ingot is obtained preliminarily, and a good foundation is laid for the subsequent deep extrusion; secondly, the back pressure system is arranged, so that the ejection device plays a role of pre-ejecting, namely the ejection rod is abutted against the through hole through the back pressure system in the pre-pressing process, and the ejection device is used for extruding the residual pressure in the through hole after the last extrusion is finished. Meanwhile, the arrangement of the back pressure system is also beneficial to intercepting the alloy ingot, is convenient for continuous operation and further promotes large-scale production.

Further, in a preferred embodiment of the present invention, the first driving mechanism is disposed on a side wall of the housing, the first heating jacket is disposed outside the powder storage tank, and the bottom of the powder storage tank is disposed as an insertion plate movably connected to the bottom of the powder storage tank, so as to open or close the powder outlet disposed at the bottom of the powder storage tank by moving the insertion plate.

Further, in a preferred embodiment of the present invention, the second driving mechanism is disposed on a top wall of the housing, and the female mold is correspondingly disposed below the male mold; the heating and heat-preserving device comprises a second heating sleeve, a heat-preserving and heat-insulating layer, a fixed frame and a heat-insulating gasket, wherein the second heating sleeve, the heat-preserving and heat-insulating layer and the fixed frame are sequentially sleeved on the periphery of the female die from inside to outside, the heat-insulating gasket is arranged at the bottom of the female die, and the heat-insulating gasket is provided with a mounting hole corresponding to and matched with.

According to the invention, the first heating sleeve and the second heating sleeve are respectively arranged on the outer sides of the powder storage tank and the female die to heat the alloy powder, and are combined with extrusion forming to form warm-pressing forming, so that the requirement on the tonnage of a press is reduced by utilizing the characteristic that the yield strength of the alloy is reduced and the alloy is easier to deform when the temperature is increased, and the production energy consumption and the production cost are reduced.

Further, in a preferred embodiment of the present invention, the post rod includes a rod body matching with the shape and size of the forming through hole, and a top plate disposed in the middle of the rod body.

The ejector rod plays a role in supporting and extruding the alloy ingot; the shape and the size of the rod body are matched with those of the forming through hole; the roof sets up at body of rod middle part, divide into two parts with the body of rod, and before the shaping, upper portion keeps in the shaping through-hole, and its top surface flushes with the bottom surface of die mould, and the roof also plays spacing effect, avoids the body of rod to stretch out the shaping through-hole, and the lower part and the third actuating mechanism of the body of rod are connected.

Further, in a preferred embodiment of the present invention, the production equipment further includes an electric cabinet, the electric cabinet includes a first telescopic switch for controlling the first driving mechanism to move telescopically, a second telescopic switch for controlling the second driving mechanism to move telescopically, a third telescopic switch for controlling the third driving mechanism to move telescopically, a first temperature switch for controlling the temperature of the first heating sleeve, a second temperature switch for controlling the temperature of the second heating sleeve, and a powder outlet switch for controlling the closing of a powder outlet of the powder storage tank, the first heating sleeve heats the powder storage tank, and the second heating sleeve heats the female die.

The production method of the alloy powder semi-continuous ingot adopts the production equipment to produce, and comprises the following steps:

(1) sending normal temperature or heated alloy powder into a powder storage tank through peripheral equipment, adjusting the heat preservation temperature of the powder storage tank according to requirements, and synchronously introducing inert protective gas into the shell;

(2) coating a graphite type lubricant on the outer surface of the male die and the inner surface of the female die, controlling the ejector rod to stretch into the forming through hole, adjusting the male die, the female die and the ejector rod to be positioned on the same axis, and adjusting the heat preservation temperature of the female die according to requirements;

(3) moving the powder storage tank to the position above the female die through the first driving mechanism, opening the powder outlet to add alloy powder into the female die, and recovering the powder storage tank after powder addition is finished; then, extending the male die into the female die through a second driving mechanism to pre-press the alloy powder;

(4) after the pre-pressing is finished, simultaneously controlling the second driving mechanism and the third driving mechanism to move downwards at the same speed, and extruding an alloy ingot from the forming through hole; stopping extruding after extruding a section of alloy ingot, cutting and taking away the formed alloy ingot, and then controlling the male die to move upwards and moving out of the female die;

(5) and (4) repeating the steps (3) and (4).

Further, in the preferred embodiment of the present invention, when the step (3) is repeated, the alloy powder is replenished into the die mold and the added amount of the alloy powder is the same as the weight of the alloy ingot after cutting and removing the shape.

Further, in a preferred embodiment of the present invention, the above production method comprises: and after the last extrusion is finished, stopping heat preservation of the powder storage tank and the female die, withdrawing the male die, and driving the ejector rod to move upwards to extrude the residual alloy ingot remained in the forming through hole through the third driving mechanism.

The invention has the following beneficial effects:

the invention combines the powder metallurgy technology with the extrusion deformation processing, prepresses the prepared alloy powder and then further performs the extrusion processing, and finally obtains the alloy ingot. In addition, moulds with through holes of different sizes can be designed, so that prefabricated ingots with different sizes can be obtained.

The invention is not only suitable for the cold pressing semi-continuous preparation of precast ingots by alloy powder, but also suitable for the hot pressing sintering semi-continuous ingot preparation of powder such as aluminum alloy, magnesium alloy and the like.

The extrusion mode adopted by the invention is equal proportion semi-continuous extrusion, namely, the alloy powder in the cavity of the male die is not extruded at one time during extrusion, but only certain alloy powder is extruded each time, and after the alloy powder is extruded into an alloy ingot and cut and taken away, certain alloy powder is supplemented, and the next extrusion is continued. Through the extrusion mode, the process that the pressure residue in the through hole needs to be removed after all pressure is finished every time can be omitted, the production efficiency is greatly improved, and therefore the rapid and efficient production of the alloy ingot is realized.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention before powdering;

FIG. 2 is a schematic structural diagram of the embodiment of the present invention in a pre-pressing state;

fig. 3 is a schematic structural diagram of the embodiment of the present invention in a pressing state.

In the figure: 100-production equipment; 101-a housing; 102-a base; 103-vertical plate; 104-a top seat; 105-an air inlet; 201-powder storage tank; 202-a first drive mechanism; 203-a first heating jacket; 204-plug board; 301-a second drive mechanism; 302-male die; 303-a female die mold; 304-a second heating jacket; 305-heat preservation and insulation layer; 306-a fixed frame; 307-heat insulating gaskets; 308-forming a through hole; 401-a third drive mechanism; 402-a mandril; 403-a rod body; 404-a top plate; 405-a cutter; 406-a hand grip; 501-an electric cabinet; 502-a first telescopic switch; 503-a second telescopic switch; 504-a third telescopic switch; 505-a first temperature switch; 506-a second temperature switch; 507-a powder outlet switch; 600-alloy ingot.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1 to 3, an alloy powder semi-continuous ingot manufacturing apparatus 100 according to an embodiment of the present invention includes: the powder feeding device comprises a machine shell 101, a powder feeding system, an extrusion system and a back pressure system which are arranged in the machine shell 101, and an electric cabinet 501 for controlling the powder feeding system, the extrusion system and the back pressure system to work.

The casing 101 of the embodiment of the invention is a sealed casing, so that the whole production process is carried out in a sealed environment filled with inert gas, and the alloy is prevented from reacting with oxygen in the preparation process. In the embodiment shown in fig. 1, the housing 101 includes a base 102, a vertical plate 103, and a top seat 104, wherein the base 102 is fixed on the ground, and the base 102 and the top seat 104 are connected and fixed by the vertical plate 103. The housing 101 is shown only schematically, and the detailed structure thereof is not shown in the figures, such as a powder inlet for inputting alloy powder, a powder feeding pipe connected to the powder storage tank 201, etc., which can be arranged and installed by those skilled in the art according to the common technical knowledge, such as arranging the powder inlet on the top of the housing 101, and the powder feeding pipe passing through the powder inlet and connected to the powder storage tank 201. In addition, the casing 101 is provided with an inlet 105 for inputting an inert gas.

Referring to fig. 1, the powder feeding system includes: a powder storage tank 201 and a first driving mechanism 202 connected to the powder storage tank 201 and driving the powder storage tank 201 to move in a horizontal direction in an extending and contracting manner. The first driving mechanism 202 is disposed on a side wall of the housing 101, and the first driving mechanism 202 includes a motor and a driving shaft disposed in a horizontal direction, one end of the driving shaft is connected to the first motor, and the other end thereof is connected to the powder storage tank 201. The powder storage tank 201 is extended or retracted in the horizontal direction by the first driving mechanism 202. The first heating jacket 203 is arranged outside the powder storage tank 201, and the bottom of the powder storage tank 201 is provided with an inserting plate 204 which is movably connected, so that a powder outlet arranged at the bottom of the powder storage tank 201 can be opened or closed by moving the inserting plate 204. The first heating jacket 203 is connected with the electric cabinet 501 and is used for preheating and insulating the alloy powder in the powder storage tank 201. The inserting plate 204 is arranged at an opening at the bottom of the powder storage tank 201, and is opened or closed under the control of the electric cabinet 501, so that the alloy powder in the powder storage tank 201 is added into the extrusion system. In order to realize the automatic control of the electric control box 501 on the socket board 204, the structure of the socket board 204 of the present invention includes, but is not limited to, the following embodiments: for example, the inserting plate 204 is hinged with the tank body, and the rotating shaft is driven by the motor to rotate to drive the inserting plate 204 to open or close; or the opening or closing of the bottom opening can be realized by the motor driving the inserting plate 204 to slide along the bottom of the tank body. In example 1 shown in the figure, an arrow shown at the top of the powder storage tank 201 is shown as a charging port of the alloy powder, and an arrow shown at the bottom is shown as a method of opening the insert plate 204.

Referring to fig. 1, the extrusion system includes: a second driving mechanism 301, a male die 302, a female die 303 and a heating and heat-preserving device. The second driving mechanism 301 is connected to the male mold 302 to drive the male mold 302 to move telescopically in the vertical direction. The second driving mechanism 301 is also composed of a motor and a driving shaft. The second driving mechanism 301 is disposed on the top wall of the housing 101. The motor of the second driving mechanism 301 is mounted on the top base 104 of the housing 101, and its driving shaft is disposed downward in the vertical direction and connected to the male mold 302. The female die 303 is correspondingly disposed below the male die 302. The female die 303 is arranged below the powder storage tank 201 and is matched with the male die 302. The bottom of the female die 303 is provided with a forming through hole 308. The male mold 302 is a column structure, which is fitted with the inner cavity of the female mold 303. The heating and heat-preserving device is arranged outside the female die 303. The heating and heat-preserving device comprises a second heating sleeve 304, a heat-preserving and heat-insulating layer 305, a fixed frame 306 and a heat-insulating gasket 307 arranged at the bottom of the female die 303, wherein the second heating sleeve 304, the heat-preserving and heat-insulating layer 305 and the fixed frame 306 are sequentially sleeved on the periphery of the female die 303 from inside to outside, and the heat-insulating gasket 307 is provided with a mounting hole corresponding to and matched with the forming through hole. The female die 303 and the heating and heat-insulating device may be disposed on the work bench in the manner shown in fig. 1, so as to facilitate the cut-off and removal of the formed alloy ingot 600.

Referring to fig. 1, the backpressure system includes: a top bar 401 which is arranged below the female die 303 and corresponds to the forming through hole 308, and a third driving mechanism 401 which drives the top bar 401 to move telescopically along the vertical direction. The third drive mechanism 401 is also composed of a motor and a drive shaft. In the embodiment shown in fig. 1, the motor is arranged in a deep well excavated in the ground, the drive shaft is connected to the motor and arranged in a vertical direction, and a ram 401 is connected to a free end of the drive shaft. The stem 401 includes a stem 403 matching the shape and size of the shaped through-hole 308 and a top plate 404 disposed in the middle of the stem 403. Referring to fig. 3, the present invention further includes a cutting device disposed below the female mold 303, the cutting device including a cutter 405 and a gripper 406. As shown in fig. 3, a cutter 405 and a gripper 406 may be mounted in the table, with the blade of the cutter 405 positioned laterally below the forming through-hole 308 and the gripper 406 positioned below the cutter 405. When the formed alloy ingot 600 needs to be cut off, the alloy ingot 600 is fixed through the hand grip 406 before cutting, the cutting machine 405 controls the blade to horizontally move rightwards for cutting, the hand grip 406 is released after cutting, and then the cut-off alloy ingot 600 is grabbed out through a mechanical arm (not shown in the figure). It should be noted that the production environment of the present invention is not completely sealed, and the front and back of the space below the female die 303 are communicated with the outside, so that the mechanical arm extends into and grips the alloy ingot 600. Of course, the person skilled in the art can design and modify the cutting, grabbing and transporting work of the formed alloy ingot 600 according to the actual situation, and can also use the cutting, grabbing and transporting work together with the existing device. The focus of the present invention is not here on the improvement and therefore is not discussed further.

Referring to fig. 1, the production apparatus 100 further includes an electric cabinet 501, and the electric cabinet 501 includes a first telescopic switch 502 for controlling the first driving mechanism 202 to move telescopically, a second telescopic switch 503 for controlling the second driving mechanism 301 to move telescopically, a third telescopic switch 504 for controlling the third driving mechanism 401 to move telescopically, a first temperature switch 505 for controlling the temperature of the first heating jacket 203, a second temperature switch 506 for controlling the temperature of the second heating jacket 304, and a powder outlet switch 507 for controlling the closing of the powder outlet of the powder storage tank 201. The first heating jacket 203 heats the powder storage tank 201. The second heating jacket 304 heats the female mold 303. The electric cabinet 501, the first driving mechanism 202, the second driving mechanism 301, the third driving mechanism 401, the first heating jacket 203, the second heating jacket 304 and the powder storage tank 201 are all connected and conducted through wires, and the working mode and principle and necessary components are all performed according to the prior art, which is not described in the present invention.

The production method of the present invention will be described below with reference to FIGS. 1 to 3.

The production method of the alloy powder semi-continuous ingot production of the embodiment of the invention adopts the production equipment 100 of the embodiment of the invention to produce, and comprises the following steps:

(1) in the state shown in fig. 1, the alloy powder at normal temperature or heated is sent to the powder storage tank 201 through a peripheral device (not shown in the figure), the powder storage tank 201 adjusts the heat preservation temperature and preserves the heat as required, and inert shielding gas is synchronously introduced into the casing 101. An inert shielding gas, preferably argon, is continuously introduced to minimize oxidation of the alloy powder.

(2) Graphite type lubricant is coated on the outer surface of the male die 302 and the inner surface of the female die 303, and the ejector pins 401 are controlled to extend into the forming through holes 308. The male die 302, the female die 303 and the ejector rods 401 are adjusted to be located on the same axis, and the heat preservation temperature of the female die 303 is adjusted according to requirements and is preserved. The lubricating property between the female die 303 and the alloy ingot 600 is increased by coating a graphite type lubricant, so that the extrusion and demoulding are facilitated.

(3) Moving the powder storage tank 201 to the position above the female die 303 through the first driving mechanism 202, opening a powder outlet to add alloy powder into the female die 303, and recovering the powder storage tank 201 after powder addition is finished; then, the male die 302 is extended into the female die 303 through the second driving mechanism 301 to pre-compress the alloy powder, as shown in fig. 2;

(4) as shown in fig. 3, after the pre-pressing is finished, the second driving mechanism 301 and the third driving mechanism 401 are controlled to move downwards at the same speed, and an alloy ingot 600 is extruded from the forming through hole 308; stopping extruding after extruding a section of alloy ingot 600, cutting off the extruded section of alloy ingot by a cutting machine 405, taking away the formed alloy ingot 600, and then controlling the male die 302 to move upwards and move out of the female die 303;

(5) and (4) repeating the steps (3) and (4).

The addition amount of the supplementary alloy powder is the same as the weight of the alloy ingot after cutting and taking away the forming.

Preferably, the production method comprises: and after the last extrusion is finished, stopping heat preservation of the powder storage tank 201 and the female die 303, withdrawing the male die 302, and driving the ejector rods 401 to move upwards to extrude the residual alloy pressing ingots 600 remained in the forming through holes 308 through the third driving mechanism 401. The alloy ingot 600 in the forming through hole 308 is ejected by the upper half section of the rod body 403.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A production facility of alloy powder semicontinuous ingot making, characterized by includes: the powder feeding device comprises a machine shell (101), and a powder feeding system, an extrusion system and a back pressure system which are arranged in the machine shell (101);

the powder feeding system comprises: the powder storage device comprises a powder storage tank (201) and a first driving mechanism (202) which is connected with the powder storage tank (201) and drives the powder storage tank (201) to move in a telescopic mode along the horizontal direction;

the extrusion system includes: the powder storage tank is characterized by comprising a second driving mechanism (301), a male die (302), a female die (303) and a heating and heat-insulating device, wherein the second driving mechanism (301) is connected with the male die (302) to drive the male die (302) to move in a telescopic manner along the vertical direction, the female die (303) is arranged below the powder storage tank (201) and matched with the male die (302), a forming through hole (308) is formed in the bottom of the female die (303), and the heating and heat-insulating device is arranged on the outer side of the female die (303);

the backpressure system comprises: the ejector rod (402) is arranged below the female die (303) and corresponds to the forming through hole (308), and the third driving mechanism (401) drives the ejector rod (402) to move in a telescopic mode along the vertical direction.

2. The alloy powder semi-continuous ingot production equipment according to claim 1, wherein the first driving mechanism (202) is arranged on the side wall of the machine shell (101), a first heating sleeve (203) for heating the powder storage tank (201) is arranged outside the powder storage tank (201), and the bottom of the powder storage tank (201) is provided with an inserting plate (204) movably connected so as to open or close a powder outlet arranged at the bottom of the powder storage tank (201) by moving the inserting plate (204).

3. The alloy powder semi-continuous ingot production equipment according to claim 1, wherein the second driving mechanism (301) is arranged on the top wall of the machine shell (101), and the female die (303) is correspondingly arranged below the male die (302); heating heat preservation device includes that from interior to exterior overlaps in proper order and establishes second heating jacket (304), heat preservation insulating layer (305) and fixed frame (306) and the setting of die mould (303) periphery are in heat insulating washer (307) of die mould (303) bottom, second heating jacket (304) heating die mould (303), heat insulating washer (307) be equipped with the mounting hole that shaping through-hole (308) correspond and match.

4. The alloy powder semi-continuous ingot production apparatus according to claim 1, wherein the ejector pin (402) comprises a rod body (403) matched in shape and size with the forming through hole (308), and a top plate (404) disposed in the middle of the rod body (403).

5. The alloy powder semi-continuous ingot production equipment according to any one of claims 1 to 4, wherein the production equipment further comprises an electric cabinet (501), and the electric cabinet (501) comprises a first telescopic switch (502) for controlling the first driving mechanism (202) to move telescopically, a second telescopic switch (503) for controlling the second driving mechanism (301) to move telescopically, a third telescopic switch (504) for controlling the third driving mechanism (401) to move telescopically, a first temperature switch (505) for controlling the temperature of the first heating sleeve (203), a second temperature switch (506) for controlling the temperature of the second heating sleeve 304, and a powder outlet switch (507) for controlling the closing of a powder outlet of the powder storage tank (201).

6. A method for producing alloy powder semi-continuous ingot, which is characterized by using the production equipment of any one of claims 1-5, and comprises the following steps:

(1) sending normal temperature or heated alloy powder into a powder storage tank (201) through peripheral equipment, adjusting the heat preservation temperature of the powder storage tank (201) according to requirements, and synchronously introducing inert protective gas into the machine shell (101);

(2) coating graphite type lubricant on the outer surface of the male die (302) and the inner surface of the female die (303), controlling the ejector rod (402) to extend into the forming through hole (308), adjusting the male die (302), the female die (303) and the ejector rod (402) to be positioned on the same axis, and adjusting the heat preservation temperature of the female die (303) according to requirements;

(3) moving the powder storage tank to the position above the female die (303) through the first driving mechanism (202), opening a powder outlet to add alloy powder into the female die (303), and recovering the powder storage tank (201) after powder addition is finished; then, extending the male die (302) into the female die (303) through the second driving mechanism (301) to pre-press the alloy powder;

(4) after the pre-pressing is finished, simultaneously controlling the second driving mechanism (301) and the third driving mechanism (401) to move downwards at the same speed, and extruding an alloy ingot from the forming through hole (308); stopping extruding after a section of alloy ingot is extruded, cutting and taking away the formed alloy ingot, and then controlling the male die (302) to move upwards and move out of the female die (303);

(5) and (4) repeating the steps (3) and (4).

7. The method of producing a semi-continuous ingot of alloy powder according to claim 6, wherein when the step (3) is repeated, the alloy powder is replenished into the female die (303) and the amount of the alloy powder added is the same as the weight of the alloy ingot after cutting and removing the shape.

8. A production method of a semi-continuous ingot from alloy powder according to any one of claims 6 to 7, wherein the production method comprises: and after the last extrusion is finished, stopping heat preservation of the powder storage tank and the female die (303), withdrawing the male die (302), and driving the ejector rod (402) to move upwards to extrude the residual alloy ingot remained in the forming through hole (308) through a third driving mechanism.