Research device and method for extrusion flow of aluminum alloy profile

Abstract

The invention provides a research device and method for extrusion flowing of an aluminum alloy profile. The device comprises a lifting assembly, an extrusion assembly and a mold assembly, and the extrusion assembly and the mold assembly are arranged at the movable end and the fixed end of the lifting assembly respectively; the extrusion assembly comprises an extrusion rod, the die assembly comprises an extrusion cylinder, a heating assembly and a detachable die, the extrusion rod, the extrusion cylinder and the detachable die are aligned from top to bottom, the heating assembly is arranged on the periphery of the extrusion cylinder, and the detachable die can be detached into a plurality of die blocks according to the section characteristics of the aluminum alloy profile. According to the method, the metal flowing rule of the aluminum alloy section in different mold structures and different deformation stages can be obtained, so that the aluminum alloy section mold design is guided, the development period of a new aluminum alloy section product is shortened, and the development cost of the new aluminum alloy section product is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a device and method for studying the extrusion flow of aluminum alloy profiles. Background Art

[0002] Aluminum alloy profiles are one of the most widely used lightweight components. They are widely used in transportation, aerospace, electrical appliances, construction and other fields due to their advantages such as light weight, high strength, easy forming, beautiful appearance and corrosion resistance. The traditional aluminum profile development process is costly, inefficient, time-consuming and labor-intensive. It requires repeated mold modification based on experience until qualified products can be processed.

[0003] As computer simulation technology becomes increasingly powerful, the profile extrusion process can be simulated using finite element software. The simulation can show the flow of metal as it passes through different die structures. However, there are differences between the simulation results and the actual metal flow, and the evolution of the microstructure of the extrusion process is even more difficult to obtain through simulation. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a device and method for studying the extrusion flow of aluminum alloy profiles, which can reduce the development cycle and development cost of new aluminum alloy profile products.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a research device for extrusion flow of aluminum alloy profiles, comprising a lifting assembly, an extrusion assembly and a die assembly, wherein the extrusion assembly and the die assembly are respectively arranged on a movable end and a fixed end of the lifting assembly;

[0007] The extrusion assembly includes an extrusion rod, and the mold assembly includes an extrusion cylinder, a heating assembly and a detachable mold. The extrusion rod, the extrusion cylinder and the detachable mold are aligned from top to bottom, the heating assembly is arranged on the periphery of the extrusion cylinder, and the detachable mold can be disassembled into multiple mold blocks according to the cross-sectional characteristics of the aluminum alloy profile.

[0008] The beneficial effect of the present invention is that through the cooperation of the lifting assembly, the extrusion assembly and the die assembly, the extrusion process can be stopped at any time to obtain the aluminum alloy profiles at different deformation stages during the extrusion process, and the extrusion flow data of the aluminum alloy profiles at different deformation stages can be obtained by sampling and analyzing them respectively. At the same time, by replacing the detachable die, the extrusion flow data under different die structures can be obtained, so that the metal flow law of the aluminum alloy profiles at different die structures and different deformation stages can be obtained, thereby guiding the design of aluminum alloy profile dies, shortening the development cycle of new aluminum alloy profile products, and reducing the development cost of new aluminum alloy profile products.

[0009] Optionally, when the aluminum alloy profile is solid, the detachable mold can be detached into a plurality of mold blocks along the longitudinal section of the center of the working belt.

[0010] Optionally, when the aluminum alloy profile is hollow, the detachable mold includes an upper diverter membrane and a lower molding membrane that are detachably connected, the upper diverter membrane is provided with a mold core, and the lower molding membrane is provided with a welding chamber and a lower working belt in sequence from top to bottom, the mold core extends into the welding chamber, and the lower molding membrane can be disassembled into multiple mold blocks along the longitudinal section of the center of the welding chamber.

[0011] According to the above description, different detachable dies are designed according to different structures of aluminum alloy profiles to ensure that the multiple die blocks after disassembly can obtain aluminum alloy profiles at different deformation stages during the extrusion process.

[0012] Optionally, the cross section of the feed end of the detachable mold is larger than the cross section of the discharge end.

[0013] According to the above description, the end surface of the detachable die is continuously reduced from feeding to discharging to improve the extrusion effect.

[0014] Optionally, the mold assembly further comprises a lower base disposed on the fixed end, the lower base is a three-layer stacked design, the extrusion cylinder is assembled to the upper layer of the lower base, the detachable mold is assembled to the middle layer of the lower base, and the lower layer of the lower base is provided with a hollow through hole;

[0015] The cross section of the discharge end of the extrusion cylinder is smaller than the cross section of the feed end of the detachable die, and the cross section of the discharge end of the detachable die is smaller than the cross section of the hollow through hole.

[0016] Optionally, the multiple mold blocks of the detachable mold are in a truncated cone shape after assembly, and the feed end of the detachable mold is higher than the middle top surface of the lower base.

[0017] According to the above description, the mold height is designed to be slightly higher than the base height, and multiple mold blocks are truncated into a cone shape after assembly, so that when the mold is subjected to extrusion force from top to bottom during the extrusion process, each mold block is squeezed tighter and tighter, and the metal bar will not overflow from the mold gap.

[0018] Optionally, the heating assembly includes a wound heating coil, a ceramic patch, a temperature controller and a contact thermocouple, and the temperature controller is electrically connected to the wound heating coil and the contact thermocouple;

[0019] The wound heating coil is wound around the periphery of the extrusion cylinder, the ceramic patch surrounds the periphery of the wound heating coil, and the contact thermocouple is in contact with the inside of the extrusion cylinder.

[0020] Optionally, the extrusion assembly and the mold assembly are respectively arranged on the movable end and the fixed end of the lifting assembly through different clamps.

[0021] Optionally, the detachable mold is provided with an empty knife below the working belt.

[0022] In a second aspect, the present invention provides a method for studying the extrusion flow of an aluminum alloy profile, using a device for studying the extrusion flow of an aluminum alloy profile according to the first aspect, the method comprising the steps of:

[0023] The aluminum alloy bar is placed into the extrusion barrel, and the heating component is started for controllable heating;

[0024] The extrusion rod is driven downward by the lifting assembly, so that the aluminum alloy bar in the extrusion cylinder flows toward the detachable die under the extrusion of the extrusion rod;

[0025] The extrusion process is stopped at any time, and after the detachable die, the extrusion cylinder and the aluminum alloy profile are cooled to room temperature, the detachable die is taken out and disassembled into a plurality of die blocks to obtain aluminum alloy profiles at different deformation stages during the extrusion process;

[0026] Sampling and analysis are performed from different positions of the aluminum alloy profile at different deformation stages to obtain the extrusion flow data of the aluminum alloy profile at different deformation stages. By replacing the detachable mold, the extrusion flow data under different mold structures are obtained. The extrusion flow data of the aluminum alloy profile at different mold structures and different deformation stages are used to guide the design of the aluminum alloy profile mold.

[0027] Among them, the technical effect corresponding to the research method of aluminum alloy profile extrusion flow provided by the second aspect refers to the relevant description of the research device of aluminum alloy profile extrusion flow provided by the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1A schematic structural diagram of a device for studying extrusion flow of an aluminum alloy profile according to an embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram of a detachable mold involved in Embodiment 1 of the present invention, which is an L-shaped mold;

[0030] Figure 3 The detachable mold involved in the first embodiment of the present invention is a cross-sectional schematic diagram of an L-shaped mold;

[0031] Figure 4 This is a structural schematic diagram of a detachable mold as a Y-shaped mold involved in the second embodiment of the present invention;

[0032] Figure 5 The detachable mold involved in the second embodiment of the present invention is a cross-sectional schematic diagram of a Y-shaped mold;

[0033] Figure 6 This is a structural schematic diagram of a U-shaped mold in which the detachable mold involved in the third embodiment of the present invention is a U-shaped mold;

[0034] Figure 7 This is a cross-sectional schematic diagram of a detachable mold involved in Embodiment 3 of the present invention, which is a U-shaped mold;

[0035] Figure 8 This is a structural schematic diagram of a detachable mold as a split flow assembly mold involved in the fourth embodiment of the present invention;

[0036] Fig. 9 It is a partial disassembly schematic diagram of the detachable mold involved in the fourth embodiment of the present invention, which is a split-flow assembly mold;

[0037] Fig.10 The detachable mold involved in the fourth embodiment of the present invention is a cross-sectional schematic diagram of a split flow assembly mold;

[0038] Fig.11 The present invention is a flowchart of a method for studying the extrusion flow of an aluminum alloy profile according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Lifting assembly; 11. Movable end; 12. Fixed end;

[0041] 2. Extrusion assembly; 21. Upper base; 22. Extrusion rod;

[0042] 3. mold assembly; 31. extrusion cylinder; 32. heating assembly; 33. detachable mold; 331. mold block; 34. lower base;

[0043] 4. Fixture;

[0044] 101. L-shaped mold hole; 102. L-shaped mold guide cavity; 103. L-shaped mold working belt; 104. L-shaped mold working belt empty knife; 105. L-shaped mold discharge empty knife;

[0045] 201, Y-type mold hole; 202, Y-type mold guide cavity; 203, Y-type mold working belt; 204, Y-type mold working belt empty knife; 205, Y-type mold discharge empty knife;

[0046] 301, U-shaped mold hole; 302, U-shaped mold guide cavity; 303, U-shaped mold working belt; 304, U-shaped mold working belt empty knife; 305, U-shaped mold discharge empty knife;

[0047] 401, upper diverter membrane; 402, lower molding membrane; 403, diverter hole; 404, diverter empty knife; 405, mold core; 406, welding chamber; 407, lower working belt; 408, lower empty knife; 409, diverter mold discharge empty knife. DETAILED DESCRIPTION

[0048] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0049] Embodiment 1

[0050] This embodiment is suitable for application scenarios that require the design of aluminum alloy profile molds. In the prior art, the profile extrusion process is simulated by finite element software during mold design, which has the problems of long development cycle and high development cost. This embodiment, through the cooperation of the lifting component 1, the extrusion component 2 and the detachable mold 33, can obtain the metal flow law of the aluminum alloy profile in different mold structures and different deformation stages, thereby guiding the design of aluminum alloy profile molds, shortening the development cycle of new aluminum alloy profile products, and reducing the development cost of new aluminum alloy profile products. See the following description for details.

[0051] Please refer to Figures 1 to 3 , a research device for extrusion flow of aluminum alloy profiles, comprising a lifting assembly 1, an extrusion assembly 2 and a die assembly 3, wherein the extrusion assembly 2 and the die assembly 3 are respectively arranged on a movable end 11 and a fixed end 12 of the lifting assembly 1. Figure 1 It can be seen that the lifting assembly 1 in this embodiment does not need a special extruder for extrusion, and a 200-ton vertical hydraulic press can be used. The output end of the vertical hydraulic press drives the movable end 11 up and down to achieve the extrusion matching of the extrusion assembly 2 and the mold assembly 3.

[0052] Reference Figure 1 It can be seen that the extrusion assembly 2 includes an upper base 21 and an extrusion rod 22, and the mold assembly 3 includes an extrusion barrel 31, a heating assembly 32, a detachable mold 33 and a lower base 34. The heating assembly 32 is arranged on the periphery of the extrusion barrel 31. Specifically, the heating assembly 32 includes a wound heating coil, a ceramic patch, a temperature controller and a contact thermocouple, and the temperature controller is electrically connected to the wound heating coil and the contact thermocouple. The wound heating coil is wound around the periphery of the extrusion barrel 31 to heat the extrusion barrel 31; the ceramic patch surrounds the periphery of the wound heating coil to insulate the extrusion barrel 31 and the wound heating coil to prevent the temperature from dropping; the contact thermocouple is in contact with the inside of the extrusion barrel 31 to transmit the temperature signal to the temperature controller to control the temperature.

[0053] Among them, the extrusion assembly 2 and the die assembly 3 are respectively arranged on the movable end 11 and the fixed end 12 of the lifting assembly 1 through different clamps 4, so as to realize the disassembly and replacement of the extrusion assembly 2 and the die assembly 3 on the lifting assembly 1. Specifically, the upper base 21 is arranged on the movable end 11, and the extrusion rod 22 is assembled on the upper base 21, so that the lifting assembly 1 drives the extrusion rod 22 to rise and fall through the movable end 11 and the upper base 21. Among them, the lower base 34 is a three-layer stacking design, the extrusion cylinder 31 is assembled to the upper layer of the lower base 34, the detachable die 33 is assembled to the middle layer of the lower base 34, and the lower layer of the lower base 34 is provided with a hollow through hole. At the same time, the extrusion rod 22, the extrusion cylinder 31, the detachable die 33 and the hollow through hole are aligned from top to bottom to realize that the aluminum alloy bar will flow into the detachable die 33 after being heated and extruded.

[0054] In this embodiment, the detachable mold 33 can be detached into a plurality of mold blocks 331 according to the cross-sectional characteristics of the aluminum alloy profile, and the plurality of mold blocks 331 are truncated after assembly. Specifically, when the aluminum alloy profile is solid, the detachable mold 33 can be detached into a plurality of mold blocks 331 along the longitudinal section of the center of the working zone.

[0055] like Figure 1 As shown, the cross section of the feed end of the detachable die 33 is larger than the cross section of the discharge end, the cross section of the discharge end of the extrusion barrel 31 is smaller than the cross section of the feed end of the detachable die 33, and the cross section of the discharge end of the detachable die 33 is smaller than the cross section of the hollow through hole. The above cross section size limit ensures that the aluminum alloy bar in the extrusion barrel 31 can flow well into the detachable die 33, and at the same time ensures that the hollow through hole of the lower base 34 can well allow the aluminum alloy profile to pass through.

[0056] Among them, the feeding end of the detachable mold 33 is higher than the middle top surface of the lower base 34, so that when the mold is subjected to the extrusion force from top to bottom during the extrusion process, each mold block 331 is squeezed tighter and tighter, and the metal bar material will not overflow from the gap between the mold blocks 331.

[0057] The detachable mold 33 is provided with an empty knife below the working belt. Figure 3 The functions of the multiple stepped empty knives are: first, to facilitate the processing of aluminum alloy profiles; second, since the extrusion pressure of the aluminum alloy profiles is too large, the multi-level empty knives can prevent the mold from being crushed; third, the aluminum alloy profiles may not have a uniform flow rate when they come out of the working belt, and the aluminum alloy profiles may bend. The stepped empty knives can prevent the bent aluminum alloy profiles from contacting the detachable mold 33, avoiding blockage in the detachable mold 33 and affecting the flow of the aluminum alloy liquid.

[0058] Therefore, refer to Figure 2 It can be seen that the detachable mold 33 in this embodiment is an L-shaped mold, and its longitudinal section along the center of the L-shaped mold working belt 103 can be split into two mold blocks 331. After assembly, the two mold blocks 331 form an L-shaped mold hole 101 with an L-shaped cross section. Figure 3 It can be seen that the L-shaped mold hole 101 is, from top to bottom, an L-shaped mold guide cavity 102 for guiding the flow of aluminum alloy liquid, an L-shaped mold working belt 103 for forming aluminum alloy profiles, an L-shaped mold working belt empty knife 104 for supporting the L-shaped mold working belt 103, and an L-shaped mold discharge empty knife 105.

[0059] The L-shaped mold guide cavity 102 and the aluminum alloy profile are similar in appearance, and the L-shaped mold guide cavity 102 is provided with a 2mm chamfer on the side close to the extrusion cylinder 31, and its own depth is 8mm.

[0060] The cross-sectional contour line of the L-shaped die working belt 103 is the same as the cross-sectional contour line of the aluminum alloy profile.

[0061] Among them, the L-shaped mold working zone empty knife 104 is about 1 mm.

[0062] Embodiment 2

[0063] Please refer to Figure 1 , Figure 4 and Figure 5 , a research device for extrusion flow of aluminum alloy profiles, which is different from the first embodiment in that Figure 4As shown, the detachable mold 33 in this embodiment is a Y-shaped mold, and its longitudinal section along the center of the Y-shaped mold working belt 203 can be split into three mold blocks 331 with fan-shaped cross sections. After assembly, the three mold blocks 331 form a Y-shaped mold hole 201 with a Y-shaped cross section. Figure 5 It can be seen that the Y-type mold hole 201 is, from top to bottom, a Y-type mold guide cavity 202 for guiding the flow of aluminum alloy liquid, a Y-type mold working belt 203 for forming aluminum alloy profiles, a Y-type mold working belt empty knife 204 for supporting the Y-type mold working belt 203, and a Y-type mold discharge empty knife 205.

[0064] The Y-shaped mold guide cavity 202 and the aluminum alloy profile are similar in appearance, and the Y-shaped mold guide cavity 202 is provided with a 2 mm chamfer on the side close to the extrusion cylinder 31, and its own depth is 10 mm.

[0065] The cross-sectional contour line of the Y-shaped die working belt 203 is the same as the cross-sectional contour line of the aluminum alloy profile.

[0066] Among them, the Y-type mold working zone empty knife 204 is about 1.2 mm.

[0067] Embodiment 3

[0068] Please refer to Figure 1 , Figure 6 and Figure 7 , a research device for extrusion flow of aluminum alloy profiles, which is different from the first embodiment in that Figure 6 As shown, the detachable mold 33 in this embodiment is a U-shaped mold, which can be split into two mold blocks 331 along the longitudinal section of the center of the U-shaped mold working belt 303. The two mold blocks 331 form a U-shaped mold hole 301 with a U-shaped cross section after assembly. Figure 7 It can be seen that the U-shaped mold hole 301 is, from top to bottom, a U-shaped mold guide cavity 302 for guiding the flow of aluminum alloy liquid, a U-shaped mold working belt 303 for forming aluminum alloy profiles, a U-shaped mold working belt empty knife 304 for supporting the U-shaped mold working belt 303, and a U-shaped mold discharge empty knife 305.

[0069] The U-shaped mold guide cavity 302 and the aluminum alloy profile are similar in appearance, and the U-shaped mold guide cavity 302 is provided with a 2 mm chamfer on the side close to the extrusion cylinder 31, and its own depth is 10 mm.

[0070] The cross-sectional contour line of the U-shaped die working belt 303 is the same as the cross-sectional contour line of the aluminum alloy profile.

[0071] Among them, the U-shaped mold working zone empty knife 304 is about 1 mm.

[0072] Embodiment 4

[0073] Please refer to Figure 1 , Figures 8 to 10 , a research device for extrusion flow of aluminum alloy profiles, which is different from the first embodiment in that Figure 8 As shown, the detachable mold 33 in this embodiment is a diverter assembly mold. Specifically, the aluminum alloy profile adapted to this embodiment is a hollow profile. At this time, the detachable mold 33 includes a detachably connected upper diverter membrane 401 and a lower molding membrane 402. What is not shown in the figure is that the upper diverter membrane 401 and the lower molding membrane 402 are provided with a plurality of corresponding connection holes, and these connection holes are fastened and locked by screws and pins to achieve a tight fit between the upper diverter membrane 401 and the lower molding membrane 402. At this time, the lower molding membrane 402 can be disassembled into two mold blocks 331 along the longitudinal section of the center of the welding chamber 406.

[0074] like Fig. 9 and Fig.10 It can be seen that the upper diverter film 401 includes diverter holes 403, a mold core 405 and a diverter empty knife 404 from top to bottom. Among them, the diverter holes 403 are evenly distributed in four and fan-shaped. Figure 8 It can be seen that the two long sides of the aluminum alloy profile correspond to the large vertically symmetrical area of ​​the diverter holes 403, and the two short sides of the aluminum alloy profile correspond to the small horizontally symmetrical area of ​​the diverter holes 403. At the same time, the diverter bridge between the four diverter holes 403 extends from the inlet side to the outlet side of the upper diverter membrane 401, and the cross-section of the diverter bridge is arc-shaped. There is a 12° bevel angle on the inlet side of the diverter bridge to reduce the extrusion force acting on the diverter bridge. There is a 20° bevel angle on the outlet side of the diverter bridge. The cross-section of the diverter bridge in this embodiment is a teardrop shape to reduce the extrusion force acting on the diverter bridge.

[0075] like Fig. 9 and Fig.10 It can be seen that the lower molding film 402 is provided with a welding chamber 406, a lower working belt 407, a lower empty knife 408 and a diverter die discharge empty knife 409 from top to bottom. The cross section of the welding chamber 406 is disc-shaped. At this time, the mold core 405 of the upper diverter film 401 extends into the welding chamber 406 to form a hollow molding cavity. Therefore, by disassembling the longitudinal section at the center of the welding chamber 406, the flow law of the aluminum alloy profile in the diverter assembly die during molding can be obtained.

[0076] Embodiment 5

[0077] Please refer to Fig.11 A method for studying the extrusion flow of an aluminum alloy profile is based on a device for studying the extrusion flow of an aluminum alloy profile using any one of the above-mentioned embodiments 1 to 4, and the method comprises the steps of:

[0078] S1. Put the aluminum alloy bar into the extrusion barrel 31, and start the heating component 32 for controllable heating.

[0079] S2. The extrusion rod 22 is driven downward by the lifting assembly 1 so that the aluminum alloy bar in the extrusion cylinder 31 flows toward the detachable die 33 under the extrusion of the extrusion rod 22 .

[0080] In the above step S2, different extrusion parameters can be selected according to different profiles, so that the lifting assembly 1 controls the extrusion rod 22 according to different extrusion parameters.

[0081] S3. The extrusion process is stopped at any time, and after the detachable die 33, the extrusion cylinder 31 and the aluminum alloy profile are cooled to room temperature, the detachable die 33 is taken out and disassembled into a plurality of die blocks 331 to obtain aluminum alloy profiles at different deformation stages during the extrusion process.

[0082] Among them, in the above step S3, the user can control the working time of the extrusion rod 22, the heating component 32, etc. according to the deformation stage to be studied to terminate the extrusion process at any time.

[0083] S4. Samples are taken from different positions of the aluminum alloy profile at different deformation stages for analysis to obtain the extrusion flow data of the aluminum alloy profile at different deformation stages, and the extrusion flow data under different mold structures are obtained by replacing the detachable mold 33. The aluminum alloy profile mold design is guided according to the extrusion flow data of the aluminum alloy profile at different mold structures and different deformation stages.

[0084] In summary, the above embodiments can obtain the metal flow law of aluminum alloy profiles in different mold structures and different deformation stages, thereby guiding the design of aluminum alloy profile molds, shortening the development cycle of new aluminum alloy profile products, and reducing the development cost of new aluminum alloy profile products.

[0085] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0086] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0089] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A research device for extrusion flow of aluminum alloy profiles, characterized in that: It comprises a lifting assembly, an extrusion assembly and a die assembly, wherein the extrusion assembly and the die assembly are respectively arranged on the movable end and the fixed end of the lifting assembly; The extrusion assembly includes an extrusion rod, and the mold assembly includes an extrusion cylinder, a heating assembly and a detachable mold. The extrusion rod, the extrusion cylinder and the detachable mold are aligned from top to bottom, the heating assembly is arranged on the periphery of the extrusion cylinder, and the detachable mold can be disassembled into multiple mold blocks according to the cross-sectional characteristics of the aluminum alloy profile.

2. The research device for aluminum alloy profile extrusion flow according to claim 1, characterized in that: When the aluminum alloy profile is solid, the detachable mold can be detached into a plurality of mold blocks along the longitudinal section of the center of the working belt.

3. The research device for aluminum alloy profile extrusion flow according to claim 1, characterized in that: When the aluminum alloy profile is hollow, the detachable mold includes an upper diverter membrane and a lower molding membrane that are detachably connected, the upper diverter membrane is provided with a mold core, and the lower molding membrane is provided with a welding chamber and a lower working belt in sequence from top to bottom, the mold core extends into the welding chamber, and the lower molding membrane can be disassembled into multiple mold blocks along the longitudinal section of the center of the welding chamber.

4. The research device for aluminum alloy profile extrusion flow according to claim 1, characterized in that: The cross section of the feed end of the detachable mold is larger than the cross section of the discharge end.

5. A research device for aluminum alloy profile extrusion flow according to any one of claims 1 to 4, characterized in that: The mold assembly further includes a lower base disposed on the fixed end, the lower base is a three-layer stacked design, the extrusion cylinder is assembled to the upper layer of the lower base, the detachable mold is assembled to the middle layer of the lower base, and the lower layer of the lower base is provided with a hollow through hole; The cross section of the discharge end of the extrusion cylinder is smaller than the cross section of the feed end of the detachable die, and the cross section of the discharge end of the detachable die is smaller than the cross section of the hollow through hole.

6. The research device for aluminum alloy profile extrusion flow according to claim 5, characterized in that: The multiple mold blocks of the detachable mold are in a truncated cone shape after assembly, and the feed end of the detachable mold is higher than the middle layer top surface of the lower base.

7. A research device for aluminum alloy profile extrusion flow according to any one of claims 1 to 4, characterized in that: The heating assembly includes a wound heating coil, a ceramic patch, a temperature controller and a contact thermocouple, and the temperature controller is electrically connected to the wound heating coil and the contact thermocouple; The wound heating coil is wound around the periphery of the extrusion cylinder, the ceramic patch surrounds the periphery of the wound heating coil, and the contact thermocouple is in contact with the inside of the extrusion cylinder.

8. A device for studying extrusion flow of aluminum alloy profiles according to any one of claims 1 to 4, characterized in that: The extrusion assembly and the mold assembly are respectively arranged on the movable end and the fixed end of the lifting assembly through different clamps.

9. A device for studying extrusion flow of aluminum alloy profiles according to any one of claims 1 to 4, characterized in that: The detachable mold is provided with an empty knife below the working belt.

10. A method for studying the extrusion flow of an aluminum alloy profile, using the device for studying the extrusion flow of an aluminum alloy profile according to any one of claims 1 to 9, the method comprising the steps of: The aluminum alloy bar is placed into the extrusion barrel, and the heating component is started for controllable heating; The extrusion rod is driven downward by the lifting assembly, so that the aluminum alloy bar in the extrusion cylinder flows toward the detachable die under the extrusion of the extrusion rod; The extrusion process is stopped at any time, and after the detachable die, the extrusion cylinder and the aluminum alloy profile are cooled to room temperature, the detachable die is taken out and disassembled into a plurality of die blocks to obtain aluminum alloy profiles at different deformation stages during the extrusion process; Sampling and analysis are performed from different positions of the aluminum alloy profile at different deformation stages to obtain the extrusion flow data of the aluminum alloy profile at different deformation stages. By replacing the detachable mold, the extrusion flow data under different mold structures are obtained. The extrusion flow data of the aluminum alloy profile at different mold structures and different deformation stages are used to guide the design of the aluminum alloy profile mold.

Images