CN112170848B - Aluminum alloy powder extrusion forging forming equipment and extrusion forging forming method - Google Patents

Abstract

The invention discloses aluminum alloy powder extrusion forming equipment and an extrusion forming method, which belong to the field of powder metallurgy, and avoid alloy cracking in the extrusion process and simplify extrusion process. The heating device can heat the powder during extrusion forging, and the temperature is controlled and detected through the thermocouple, so that the optimal temperature is maintained, and the powder is prevented from being broken during extrusion forging.

Description

Aluminum alloy powder extrusion forging forming equipment and extrusion forging forming method

[ field of technology ]

The invention relates to the field of powder metallurgy, in particular to aluminum alloy powder extrusion forging forming equipment and an extrusion forging forming method.

[ background Art ]

Powder metallurgy is a common process technology, in the existing aluminum alloy powder metallurgy process, more steps are needed, a series of process steps such as powder filling, compaction, sintering, extrusion, forging and the like are needed, each process step is needed to be performed by adopting a proper tool, equipment or a mold, the equipment investment cost is high, the preparation process is long, the working efficiency is extremely low, the rejection rate is high, in addition, the aluminum alloy forging temperature interval is small, and during the extrusion and forging process steps, the temperature is reduced after heat loss due to the temperature difference between an aluminum alloy material and the environment and the mold, and the aluminum alloy product is cracked during extrusion or forging.

[ invention ]

The invention aims to solve the technical problems of overcoming the defects of the prior art and providing aluminum alloy powder extrusion forging forming equipment, which can avoid alloy cracking in the extrusion forging process and simplify the extrusion forging procedure.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides an aluminum alloy powder extrusion forming equipment, includes the extrusion die, sets up first extrusion device and the second extrusion device of setting in the below of extrusion die top, the extrusion die includes to die, taper fit and is in to die external fixed external mold, the second extrusion device with to die offset in order to support the extrusion die, be equipped with heating device and be used for measuring on the fixed external mold to die thermocouple of die temperature, heating device sets up fixed external mold periphery, be equipped with the extrusion through groove of through-going upper and lower both ends face in to die, upper end and the lower extreme of extrusion through groove are equipped with respectively with extrusion through groove inner wall laminating go up die pad and lower die pad, go up die pad with extrusion through groove between the die pad is used for placing powder, during forging, first extrusion device with second extrusion device extrudes the powder in the extrusion through groove, during the drawing of patterns external mold, second extrusion device with fixed extrusion through groove, first extrusion through die.

The beneficial effect of this scheme:

according to the aluminum alloy powder extrusion forging forming equipment provided by the invention, when the aluminum alloy powder is placed in an extrusion forging die, the heating device can heat the powder during extrusion forging, so that the temperature of the powder is kept, the breakage caused by the excessively low temperature of the powder during extrusion forging is avoided, and the thermocouple can control and detect the temperature, so that the aluminum alloy product is always at the optimal forming temperature; the first extrusion device and the second extrusion device compress and forge the powder in the through groove through an upper die pad and a lower die pad;

the split die is a die formed by combining two independent modules, the fixed outer die is arranged outside the split die through taper fit, and two parts of the split die are tightly attached by self weight, so that stability of the extrusion die is maintained;

in the extrusion forging process, the second extrusion device is propped against the split die, the upper die can maintain the structural stability of the extrusion forging die in the extrusion process, the second extrusion device can prop against the fixed outer die in the demolding process, and the position of the fixed outer die is kept unchanged in the extrusion split die process of the first extrusion device, so that the disassembly of the extrusion forging die is facilitated, and powder filling, compaction, sintering, extrusion and forging are completed in the whole process.

Further, the first extrusion device comprises a lifting frame, an upper die and an upper transfer device, wherein the upper die and the upper transfer device are arranged on the lifting frame, the upper die is opposite to the upper die pad, the upper transfer device is propped against the split die during demolding, the second extrusion device comprises a base, a lower die and a lower transfer device, the lower die and the lower transfer device are arranged on the base, the lower die is opposite to the lower die pad, and the lower transfer device is propped against the fixed outer die during demolding.

Further, the upper feed device includes a first cylinder and a pressing sheet provided at an end of the first cylinder, and the lower feed device includes a second cylinder and a supporting sheet provided at an end of the second cylinder.

Further, the extrusion sheet is matched with the shape of the upper end surface of the split die, and the supporting sheet is matched with the shape of the lower end surface of the split die.

Further, the lower die is fixed on the base, and the second pressing device further comprises a jacking device for supporting the split die when the supporting sheet moves.

Further, at least two groups of upper conveying devices, lower conveying devices and jacking devices are arranged on two sides of the extrusion forging die.

Further, the extrusion forming equipment further comprises a support for bearing the extrusion die, the first extrusion device and the second extrusion device, two bases are arranged on the support, and each base is provided with the extrusion die and the second extrusion device.

Further, the first pressing device is movable between two pressing dies.

Further, the second extrusion device further comprises an ejection device, and the ejection device pushes the lower die pad to move upwards when demolding is carried out.

The extrusion forging forming method of the aluminum alloy powder comprises the extrusion forging forming equipment of the aluminum alloy powder, and the extrusion forging forming method comprises the following steps:

s10: the support sheet supports the extrusion forging die against the split die, the upper die downwards extrudes the upper die pad, powder in the extrusion forging through groove is compressed, and a heating device of the other extrusion forging die heats the extrusion forging die and the powder;

s20: the upper die is reset, the jacking device and the opposite-opening die are propped against to support the extrusion forging die, the supporting piece is moved out from the lower part of the extrusion forging die, the upper die downwards extrudes the extrusion forging die, meanwhile, the jacking device is reset, and the lower die pad is upwards extruded by the lower die to extrude compressed powder, so that extrusion forging is completed;

s30: the upper die is reset, the jacking device jacks up the extrusion forging die, the supporting piece is propped against the fixed outer die, the jacking device is reset, the extrusion piece moves to the upper side of the split die, and the upper die pushes the split die downwards with the extrusion piece, so that the split die and the fixed outer die are separated from taper fit;

s40: the first extrusion device moves to the upper part of another extrusion die, the ejection device below the extrusion die for completing extrusion forging pushes the lower die pad, the alloy after extrusion forging and the upper die pad are pushed out to open the die, and demoulding is completed;

s50: the temperature of the opposite die opening in the extrusion die below the first extrusion device is obtained through the thermocouple, after the temperature is stable, the extrusion is started, after the alloy in the other extrusion die is taken out, the powder is refilled, and the steps S10 to S50 are repeated.

These features and advantages of the present invention will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of an extrusion forming apparatus;

FIG. 2 is a schematic view of the overall structure of the upper die when the powder is pressed;

FIG. 3 is a schematic view of the overall structure of the jacking device supporting the squeeze forging die;

FIG. 4 is a schematic view showing the overall structure of the upper die and the lower die when the powder is simultaneously pressed;

FIG. 5 is a schematic view showing the overall structure upon completion of the swaging;

FIG. 6 is a schematic view of the overall structure when the split die is separated from the fixed outer die;

FIG. 7 is a schematic view of the structure of the upper and lower movers;

FIG. 8 is a schematic diagram of the structure upon demolding;

fig. 9 is a top view of the extrusion forming apparatus.

Reference numerals:

the die comprises a die 100 for extruding and forging, a split die 110, a fixed outer die 120, a through slot 130 for extruding and forging, an upper die pad 140, a lower die pad 150 and an inclined plane 160;

a first pressing device 200, a lifting frame 210, an upper die 220, an upper feed device 230, a first cylinder 231, and a pressing sheet 232;

a second pressing device 300, a base 310, a lower die 320, a lower transfer device 330, a second cylinder 331, and a supporting sheet 332;

heating device 400, jacking device 500, jacking device 600, and bracket 700.

[ detailed description ] of the invention

The technical solutions of the embodiments of the present invention will be explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1, the present embodiment proposes an aluminum alloy powder extrusion forming apparatus including an extrusion die 100, a first extrusion device 200 disposed above the extrusion die 100, and a second extrusion device 300 disposed below.

The extrusion die 100 comprises a split die 110 and a fixed outer die 120 which is in taper fit with the split die 110, wherein extrusion through grooves 130 penetrating through the upper end face and the lower end face of the split die 110 are formed in the split die 110. The split die 110 is a die formed by combining two independent modules, the extrusion forging through groove 130 is surrounded by the two modules, aluminum alloy powder is placed inside the extrusion forging through groove 130, the fixed outer die 120 is mounted on the outer side of the split die 110 through taper fit, and two parts of the split die 110 are tightly attached by self weight, so that stability of the extrusion forging die 100 is maintained, powder cannot leak out of a gap, after extrusion forging is completed, the split die 110 and the fixed outer die 120 are released from the fit in the vertical direction, the two parts of the split die 110 can be separated to facilitate demolding and taking out of the alloy subjected to extrusion forging, and a gap exists between the alloy and the inner wall of the extrusion forging through groove 130, so that abrasion between the alloy and the split die 110 in the demolding process is relatively small.

The upper end and the lower end of the extrusion forging through groove 130 are respectively provided with an upper die pad 140 and a lower die pad 150 which are attached to the inner wall of the extrusion forging through groove 130, aluminum alloy powder is placed in the extrusion forging through groove 130 between the upper die pad 140 and the lower die pad 150, during extrusion forging, the first extrusion device 200 extrudes the upper die pad 140 to finish the first extrusion, the powder density is improved for the first time, then the second extrusion device 300 extrudes the lower die pad 150 and the first extrusion device 200 to extrude the powder at the same time, so that the powder between the two is compressed, the second extrusion is finished, the product volume is compressed again, the density is improved again, at the moment, the first extrusion device 200 and the second extrusion device 300 form floating pressing to simultaneously provide extrusion force for the product, and the product density uniformity is higher;

since the upper die pad 140 and the lower die pad 150 are kept in contact with the inner wall of the through-extrusion groove 130, only a small amount of powder adheres to the inner wall of the through-extrusion groove 130 during the movement of the upper die pad 140 and the lower die pad 150 in the through-extrusion groove 130, and the loss of the raw material is small.

Referring to fig. 1 and 2, in general, the split die 110 is supported by the second extrusion device 300 against the split die 110, so that the split die 110 is suspended, the fixed outer die 120 is also suspended by taper fit, the split die 110 and the fixed outer die 120 are kept stable by self gravity, and in demolding, the split die 110 and the fixed outer die 120 need to be separated first, and referring to fig. 5 and 6, the second extrusion device 300 is pressed against the fixed outer die 120 at this time, so that the position of the fixed outer die 120 is kept unchanged, and the split die 110 and the fixed outer die 120 can be easily separated under the action of the extrusion of the first extrusion device 200 on the split die 110 and the gravity of the alloy itself.

In order to avoid cracking of the aluminum alloy product in the extrusion forging process, a heating device 400 is arranged on the outer side of the fixed outer die 120, the heating device 400 heats the split die 110 and powder in an induction heating mode, so that the powder can keep stable temperature in the extrusion forging process, thermocouples (not shown in the drawing) for measuring the temperature of the split die 110 are arranged on the fixed outer die 120 for controlling and detecting the temperature, a plurality of thermocouples are arranged for respectively measuring the temperature of different positions on the split die 110, when the temperatures measured by the thermocouples are similar, the whole temperature tends to be stable, the extrusion forging can be started, and the temperature can be regulated by the thermocouples, so that the aluminum alloy product is always at the optimal forming temperature.

Further, in the present embodiment, the diameters of the upper and lower ends of the swage through groove 130 are different, the diameter of the upper end is larger, and the inclined surface 160 is provided in the circumferential direction of the inner wall of the swage through groove 130. In this way, the powder enters the swage through groove 130 with a smaller diameter from the swage through groove 130 with a larger diameter in the process of being extruded, in this process, the powder is radially extruded, so that the texture of the swaged alloy is compact and strong, and the upper end is larger in diameter, so that the formed alloy block is not contacted with the lower die pad 150 any more after the extrusion is completed, and the alloy block is blocked at the inclined surface 160 of the swage through groove 130 and does not drop downwards to be separated from the split die 110.

The whole process is completed with powder filling, compaction, sintering, extrusion and forging, and compared with the existing alloy extrusion forging, the method has the advantages of less required equipment, high efficiency, great reduction of cost and improvement of alloy quality.

Wherein the first pressing device 200 includes: a lifting frame 210, an upper die 220 provided on the lifting frame 210, and an upper feed device 230. The lifting frame 210 can control the upper die 220 and the upper feed device 230 to lift above the forging die 100, the upper die 220 is opposite to the upper die pad 140, the upper die 220 can contact with the upper die pad 140 and push the upper die pad 140 downward during the downward movement of the lifting frame 210, the upper feed device 230 can press powder against the split die 110, the split die 110 is pushed to separate the fixed outer die 120 along with the downward movement of the lifting frame 210, and the split die 110 and the fixed outer die 120 are separated in fig. 6, and the upper feed device 230 and the upper die 220 are simultaneously lowered to press the split die 110.

The second pressing device 300 includes: a base 310, a lower die 320 fixedly provided on the base 310, and a lower feed device 330. The lower die 320 is opposite to the lower die pad 150 and fixed on the base 310, when the lower transfer device 330 stops supporting the extrusion die 100, the upper die 220 can extrude the whole extrusion die 100 to move downwards, in the process, the lower die 320 can extrude the powder, meanwhile, the upper die 220 also has a downwards extruding effect on the powder, the two dies simultaneously provide extruding force on the powder, the density uniformity of the aluminum alloy product is higher, and the lower transfer device 330 can support the extrusion die 100 against the split die 110 or support the fixed outer die 120 against the split die 110 and the fixed outer die 120 conveniently.

Wherein the upper feed device 230 includes a first cylinder 231 and a pressing sheet 232 provided at an end of the first cylinder 231, and the lower feed device 330 includes a second cylinder 331 and a supporting sheet 332 provided at an end of the second cylinder 331. The pressing piece 232 and the supporting piece 332 are movable relative to the swaging die 100 by the first and second cylinders 231 and 331, so that the position of the supporting piece 332 is freely changed as required, and referring to fig. 5, the position of the supporting piece 332 is located under the fixed outer die 120 in fig. 5, and the pressing piece 232 is adjacent to the upper die 220.

Referring to fig. 7, in order to stabilize the extrusion die 100 when the extrusion sheet 232 and the support sheet 332 are abutted against the extrusion die 100, two upper feed devices 230 are provided on the lifting frame 210 and two lower feed devices 330 are provided on the base 310, so that when the extrusion sheet 232 extrudes the split die 110, the support sheet 332 supports the split die 110 or the fixed outer die 120, the extrusion die 100 is uniformly stressed and does not incline, in addition, the extrusion sheet 232 is matched with the upper end surface shape of the split die 110, the support sheet 332 is matched with the lower end surface shape of the split die 110, the extrusion sheet 232 and the support sheet 332 can be better abutted against the extrusion die 100, and interference is reduced.

When the supporting sheet 332 needs to move under the extrusion die 100, another supporting device is needed to lift up the extrusion die 100, referring to fig. 3, two groups of lifting devices 500 (only one group is drawn in the figure) are provided on the base 310, the lifting devices 500 are opposite to the split die 110, the whole extrusion die 100 is lifted up by lifting the split die 110, the lifting height is greater than the height of the supporting sheet 332, the lifting devices 500 in fig. 3 have already lifted up the extrusion die 100, and the supporting sheet 332 can move under the extrusion die 100.

Referring to fig. 8, in this embodiment, an ejector device 600 is further provided, where the ejector device 600 is disposed on the base 310, after the alloy is extruded, the split die 110 and the fixed outer die 120 are released from taper fit, and the two parts of the split die 110 are separated, and the ejector device 600 may extend from the base 310 and push the lower die pad 150 to move out the alloy product upwards.

Referring to fig. 9, the extrusion forming apparatus of the present embodiment further includes a support 700 for carrying the extrusion die 100, the first extrusion device 200 and the second extrusion device 300, two bases 310 are provided on the support 700, and each of the bases 310 is provided with the extrusion die 100 and the second extrusion device 300, and the first extrusion device 200 is movable between the two extrusion dies 100. Two extrusion dies 100 on the support 700, wherein one die can be filled with powder when an alloy product is manufactured by extrusion, heating is started, when the alloy product in one die is forged, and demoulding is needed, the first extrusion device 200 can be moved to the position above the other extreme die, and after the temperature is stable, a new round of extrusion process is started. Alternatively, the two bases can be arranged to be movable, the first pressing means being arranged to be stationary.

The invention also provides an aluminum alloy powder extrusion molding method, which adopts the aluminum alloy powder extrusion molding equipment of the embodiment, and comprises the following specific production steps:

s10: referring to fig. 1 and 2, the supporting sheet 332 supports the extrusion die 100 against the split die 110, the upper die 220 downwardly presses the upper die pad 140, compresses the powder in the extrusion through-slot 130, and completes the first press, and the heating device 400 of the other extrusion die 100 heats the extrusion die 100 and the powder;

s20: referring to fig. 3, the upper die 220 is reset, the jacking device 500 supports the extrusion die 100 against the split die 110, the supporting sheet 332 is moved out from under the extrusion die 100, referring to fig. 4, the upper die downwardly extrudes the extrusion die 100, while the jacking device 500 is reset, the lower die pad 150 is upwardly extruded by the lower die 320 to compress powder, and the second extrusion is completed, and the extrusion forging is completed;

s30: referring to fig. 5, the upper die 220 is reset, the jacking device 500 jacks up the extrusion die 100, the supporting piece 332 abuts against the fixed outer die 120, meanwhile, the jacking device 500 is reset, the extrusion piece 232 moves above the split die 110, referring to fig. 6, the upper die 220 pushes the split die 110 downwards with the extrusion piece 232, so that the split die 110 and the fixed outer die 120 are separated from taper fit;

s40: the first extruding device moves to the upper part of another extruding die, referring to fig. 8, an ejector 600 below the extruding die 100 for extruding the alloy and the upper die pad 140 for extruding the alloy and the upper die pad 150 for extruding the alloy and the upper die pad 140 for extruding the alloy and the upper die pad, and demoulding is completed;

s50: the temperature of the opposite die opening in the extrusion die below the first extrusion device is obtained through the thermocouple, after the temperature is stable, the extrusion is started, after the alloy in the other extrusion die is taken out, the powder is refilled, and the steps S10 to S50 are repeated.

The embodiment of the invention can be applied to products such as powder metallurgy equipment, powder extrusion forging equipment and the like.

While the invention has been described in terms of embodiments, it will be appreciated by those skilled in the art that the invention is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.

Claims (9)

1. The aluminum alloy powder extrusion forming equipment is characterized by comprising an extrusion die, a first extrusion device arranged above the extrusion die and a second extrusion device arranged below the extrusion die, wherein the extrusion die comprises a split die and a fixed outer die arranged outside the split die in a taper fit manner, the second extrusion device is abutted against the split die to support the extrusion die, a heating device and a thermocouple for measuring the temperature of the split die are arranged on the fixed outer die, the heating device is arranged on the periphery of the fixed outer die, an extrusion through groove penetrating through the upper end face and the lower end face is arranged in the split die, an upper die pad and a lower die pad which are attached to the inner wall of the extrusion through groove are respectively arranged at the upper end and the lower end of the extrusion through groove, when the extrusion through groove between the upper die pad and the lower die pad is used for placing powder, the first extrusion device and the second extrusion device extrude the powder in the extrusion through groove, when the second extrusion device is abutted against the fixed outer die, the second extrusion device is abutted against the first extrusion device, the first extrusion through the upper die and the lower die through die pad, the upper die and the lower extrusion through die frame are arranged opposite to the upper die and the lower extrusion through die, and the lower die lifting device are arranged when the upper die is opposite to the upper die and the lower extrusion through die, and the lower die lifting device is arranged on the lifting and the lifting device.

2. The aluminum alloy powder extrusion molding apparatus according to claim 1, wherein: the upper conveying device comprises a first air cylinder and a squeezing sheet arranged at the end part of the first air cylinder, and the lower conveying device comprises a second air cylinder and a supporting sheet arranged at the end part of the second air cylinder.

3. The aluminum alloy powder extrusion molding apparatus according to claim 2, wherein: the extrusion piece is matched with the shape of the upper end surface of the split die, and the supporting piece is matched with the shape of the lower end surface of the split die.

4. The aluminum alloy powder extrusion molding apparatus according to claim 2, wherein: the extrusion lower die is fixed on the base, and the second extrusion device equipment further comprises a jacking device, wherein the jacking device is used for supporting the split die when the supporting sheet moves.

5. The aluminum alloy powder extrusion molding apparatus as recited in claim 4, wherein: at least two groups of upper conveying devices, lower conveying devices and jacking devices are arranged on two sides of the extrusion forging die.

6. The aluminum alloy powder extrusion molding apparatus according to claim 1, wherein: the extrusion forging forming equipment further comprises a support used for bearing the extrusion forging die, the first extrusion device and the second extrusion device, two bases are arranged on the support, and each base is provided with the extrusion forging die and the second extrusion device.

7. The aluminum alloy powder extrusion molding apparatus as recited in claim 6, wherein: the first extrusion device is movable between two extrusion dies.

8. The aluminum alloy powder extrusion molding apparatus according to one of claims 1 to 7, characterized in that: the second extrusion device further comprises an ejection device, and the ejection device pushes the lower die pad to move upwards when in demolding.

9. The extrusion forging forming method of the aluminum alloy powder is characterized in that: an aluminum alloy powder extrusion molding apparatus comprising any one of the above claims 1 to 8, the extrusion molding method comprising the steps of:

s10: the support sheet supports the extrusion forging die against the split die, the upper die is extruded to downwards extrude the upper die pad, powder in the extrusion forging through groove is compressed, and a heating device of the other extrusion forging die heats the extrusion forging die and the powder;

s20: the extrusion upper die is reset, the jacking device supports the extrusion forging die against the split die, the supporting piece is moved out from the lower part of the extrusion forging die, the upper die downwards extrudes the extrusion forging die, meanwhile, the jacking device is reset, and the extrusion lower die pad is upwards extruded by the extrusion lower die to extrude compressed powder, so that extrusion forging is completed;

s30: the extrusion upper die is reset, the jacking device jacks up the extrusion forging die, the supporting sheet is propped against the fixed outer die, the jacking device is reset, the extrusion sheet moves to the upper side of the split die, and the extrusion upper die pushes the split die downwards with the extrusion sheet, so that the split die and the fixed outer die are separated from taper fit;

s40: the first extrusion device moves to the upper part of another extrusion die, the ejection device below the extrusion die for completing extrusion forging pushes the lower die pad, the alloy after extrusion forging and the upper die pad are pushed out to open the die, and demoulding is completed;

s50: the temperature of the opposite die opening in the extrusion die below the first extrusion device is obtained through the thermocouple, after the temperature is stable, the extrusion is started, after the alloy in the other extrusion die is taken out, the powder is refilled, and the steps S10 to S50 are repeated.

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