Pickling device for removing alpha layer of titanium alloy
By designing the inclined rotating part and agitating part in the titanium alloy α-deletion pickling device, the problem of uneven pickling of small forgings is solved, the forgings are fully in contact with the acid liquid, and the efficiency of removing the α-deletion layer is improved.
Patent Information
- Application Number
- CN202411560185.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-02-18
AI Technical Summary
When removing the alpha layer in batches, small forgings lead to uneven pickling due to uneven stacking, there are pickling dead corners, which cannot meet the technical standards, resulting in rework and rework.
A titanium alloy α-depleting layer pickling device is designed, and the rotating part is set in an inclined state, and the forging is distributed and uniformly rotated by the spacer and the stirring part in the rotating part to ensure sufficient contact between the forging and the acid liquid.
Through the design of the rotating part and the stirring part, the dispersion of the forging and the contact effect of the acid liquid are improved, reducing the dead corner of the pickling, improving the efficiency of removing the α layer, and reducing the frequency of rework and rework.
Smart Images
Figure CN119465177A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a pickling device for removing an alpha layer of a titanium alloy. Background Art
[0002] Titanium is a very strong metal and is mostly used in the aerospace field. However, when titanium is exposed to high temperatures, oxygen diffuses into the titanium to form a hard and brittle layer, also known as the α layer. The formation of the α layer reduces the amount of strain that the surface can withstand before cracking. Cracking on the surface of titanium and titanium alloys will form cracks, which will eventually lead to part failure. The existing α layer removal method generally uses strong acid pickling to remove the α layer.
[0003] For batch processing of small forgings, the existing technology adopts the method of framing the forgings into tanks and then immersing them for corrosion. However, due to the overlapping of small titanium alloy parts, the washed area is incomplete and uneven, the product has streamlines, and the α layer of the titanium alloy is often not fully removed, which does not meet the technical standards and requires rework and repair. Summary of the invention
[0004] The present application aims to solve the technical problem that when the α layer of small forgings is removed in batches, they will be stacked together, resulting in dead corners for pickling, and provides a pickling device for removing the α layer of titanium alloy.
[0005] The specific technical solutions are as follows: A pickling device for removing the α layer of titanium alloy is rotatably arranged in a pickling tank, and includes a main shaft, a vertical panel, a connecting block and a rotating part connected in sequence along the horizontal direction. The main shaft is coaxially connected to the vertical panel, and the connecting block is eccentrically connected between the vertical panel and the rotating part. The rotating part is in an inclined state as a whole, and the center of the rotating part is on the axis of the main shaft.
[0006] As a further technical solution of the present invention, the rotating part includes an outer cylinder and an inner cylinder arranged from the outside to the inside, an annular cavity is formed between the outer cylinder and the inner cylinder, and several groups of partitions are evenly arranged on the circumference of the annular cavity. The several groups of partitions are connected to the outer cylinder and divide the annular cavity into multiple chambers. The forgings are distributed in the multiple chambers to form a ring distribution.
[0007] As a further technical solution of the present invention, a plurality of groups of support feet 1 are evenly arranged inside the outer cylinder, and the plurality of groups of support feet 1 form a support surface spaced apart from the end wall of the outer cylinder.
[0008] As a further technical solution of the present invention, one end of the supporting foot away from the outer cylinder has a pointed end.
[0009] As a further technical solution of the present invention, the gap between two adjacent supporting legs 1 is smaller than the minimum diameter of the forging.
[0010] As a further technical solution of the present invention, the partition comprises a plurality of partitions spaced apart from each other in the axial direction of the outer cylinder, and a gap is provided between two adjacent partitions to allow the forging to pass through.
[0011] As a further technical solution of the present invention, the positions of the notches in two adjacent groups of spacers are staggered.
[0012] As a further technical solution of the present invention, on the radial projection surface of the outer cylinder, the partition covers the gaps in the adjacent groups.
[0013] As a further technical solution of the present invention, there is a gap between the partition and the inner cylinder.
[0014] As a further technical solution of the present invention, a stirring piece is rotatably arranged in the inner cylinder, and the stirring piece includes a central axis coaxially arranged in the inner cylinder and several groups of stirring blades evenly arranged around the circumference of the stirring piece. The several groups of stirring blades evenly divide the internal space of the inner cylinder into multiple compartments, and the forgings are evenly distributed in the multiple compartments.
[0015] As a further technical solution of the present invention, the outer cylinder and the inner cylinder are both hollow-out in design.
[0016] As a further technical solution of the present invention, several groups of supporting feet 2 are evenly arranged inside the inner cylinder, and the several groups of supporting feet 2 form a supporting surface spaced from the end wall of the inner cylinder. The end of the supporting foot 2 away from the inner cylinder has a pointed end, and the gap between two adjacent supporting feet 2 is smaller than the minimum diameter of the forging.
[0017] As a further technical solution of the present invention, the other end of the stirring blade is provided with a plurality of groups of stirring feet equidistantly arranged along its length, and the stirring feet penetrate into the gap formed by two adjacent groups of the supporting feet 2, and the stirring feet are staggered with the supporting feet 2.
[0018] As a further technical solution of the present invention, the inclined panel is connected between the outer cylinder and the connecting block, the outer cylinder is rotatably connected to the inclined panel, and the stirring member is rotatably connected to the inclined panel.
[0019] As a further technical solution of the present invention, the outer cylinder is coaxially connected to an outer gear ring, the inclined panel is rotatably connected to a secondary shaft, and one end of the secondary shaft facing the outer cylinder is connected to a gear 1 meshing with the outer gear ring.
[0020] As a further technical solution of the present invention, the other end of the secondary shaft is connected to gear two, the extended end of the central shaft passes through the inclined panel and is connected to gear three, the inclined panel is rotatably connected to gear four, the gear four is respectively meshed with gear two and gear three, and the stirring element and the outer cylinder rotate in opposite directions at a differential speed.
[0021] The beneficial effects of the present invention are: (1) In the present application, the rotating part is set in an inclined state, forcing the forgings in the rotating part to be able to reciprocate uninterruptedly in the axial direction of the drum during the rotation of the rotating part around the main axis, and to be flatly distributed in the axial direction in the drum, changing from point distribution to surface distribution, so as to improve the dispersion of the forgings and increase the contact effect between the forgings and the acid solution.
[0022] (2) In the present application, the annular cavity is divided into several chambers of the same volume by partitions, and the forgings are evenly placed in the several chambers. The forgings are forced to overcome the influence of gravity and be confined in the chambers through the barrier of the partitions, so that the forgings are evenly distributed in the shape of the annular cavity on a macro scale, forming an annular body distribution. When the forgings are relatively evenly distributed, the gaps between the forgings are enlarged. Correspondingly, the dead angles of the forgings during pickling are smaller, and the pickling effect is improved.
[0023] (3) In the present application, notches are provided on the partitions, and the notches in adjacent partitions are staggered, so that the switching between chambers can be coordinated with the swinging of the two ends of the outer cylinder, and the switching frequency between chambers corresponds to the frequency of the swinging, that is, several groups of forgings move circumferentially or axially at the same time as the outer cylinder rotates around the main axis, which can generate forging flow while avoiding the aggregation of forgings, so that the forgings are still evenly distributed while flowing.
[0024] (4) In the present application, the internal space of the inner cylinder is evenly divided into a plurality of compartments, and the forgings can be evenly distributed in the plurality of compartments, so that the internal space of the outer cylinder is fully utilized, thereby improving the overall utilization rate.
[0025] (5) In the present application, by providing support feet 1 and 2 on the inner end surfaces of the outer cylinder and the inner cylinder respectively, a support surface with a distance from the end wall can be formed, thereby blocking direct contact between the forging and the end wall, minimizing the area of dead angles caused by the support of the forging, and ensuring the contact area between the forging and the acid liquid.
[0026] (6) In the present application, two convection currents in opposite directions can be formed by the reverse differential rotation of the outer cylinder and the stirring piece. When the two convection currents collide, turbulence can be formed at the collision point, thereby flushing the internal forgings from multiple angles and directions, destroying the loose impurity layer on the outer surface of the forgings, and the differential effect can cause the partition and the stirring piece to cause turbulence irregularly at any point in the outer cylinder, so as to achieve comprehensive flushing of the forgings in the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The overall structural schematic diagram of the pickling device for removing the α layer of titanium alloy is shown; Figure 2 The structural schematic diagram of the pickling device is shown; Figure 3 A schematic diagram of the state structure of the pickling device is shown; Figure 4 shows a schematic structural diagram of the rotating part; Figure 5 A schematic diagram of the structure in the rotating part is shown; Figure 6 A schematic diagram of the structure of the outer cylinder and the supporting foot 1 is shown; Figure 7 A schematic diagram of the structure of the partition is shown; Figure 8 A schematic diagram of the structure inside the inner cylinder is shown; Fig. 9 A schematic diagram of the structure of a stirring member is shown; Fig.10 A schematic diagram of the connection relationship between the outer cylinder and the connection block is shown; Fig.11 A schematic structural diagram of the rotational relationship between the stirring element and the outer cylinder is shown.
[0028] Reference numerals: 100, pickling tank; 200, pickling device; 210, main shaft; 220, vertical panel; 230, connecting block; 300, rotating part; 310, outer cylinder; 311, supporting foot one; 312, outer gear ring; 320, inner cylinder; 321, supporting foot two; 330, annular cavity; 340, partition; 341, partition; 342, notch; 350, stirring element; 351, middle shaft; 352, stirring blade; 353, toggle foot; 360, tilting panel; 361, secondary shaft; 362, gear one; 363, gear two; 364, gear three; 365, gear four. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0030] Based on the technical problem that small and medium-sized forgings in the prior art are stacked together when the α layer is removed in batches, resulting in dead corners in pickling, this application proposes a cleaning bin with a rotating drum structure. The drum rotates continuously after immersion, forcing the forgings to continuously flip over in the drum, so that the forgings are fully in contact with the pickling solution.
[0031] Figure 1The overall structural schematic diagram of the pickling device for removing the α layer of titanium alloy is shown; Figure 1 In the present invention, the pickling device for removing the α layer of titanium alloy comprises a pickling tank 100 and a pickling device 200 rotatably arranged in the pickling tank 100, the pickling tank 100 contains acid solution, the pickling device 200 is horizontally arranged in the pickling tank 100 and immersed in the acid solution; the pickling device 200 is immersed in the acid solution, so that the forging in the pickling device 200 can contact with the acid solution, and the pickling device 200 can drive the forging to flip and jump continuously when rotating, so as to achieve full contact between the forging and the acid solution and complete the comprehensive removal of the α layer.
[0032] The above-mentioned immersion can be partial immersion or complete immersion, and can rotate autonomously according to specific needs, which is not limited in this application.
[0033] However, in actual use, due to the limitations of the ground or errors during installation, there is often a height difference between the two sides of the pickling device 200. Therefore, under the influence of gravity, the forgings will be stacked on the lower side. On the one hand, the space utilization rate is poor and the space on the higher side is wasted. On the other hand, the forgings are stacked on one side of the bottom under the influence of gravity, forming only a point distribution. The range of movement of the forgings is limited, and they are still stuck to each other when rolling. The contact effect with the acid solution is insufficient, and the pickling effect is poor.
[0034] Figure 2 A schematic structural diagram of a pickling device 200 is shown; Figure 3 A schematic diagram of the state structure of the pickling device 200 is shown; Figure 4 shows a schematic structural diagram of the rotating part 300; Figure 2-Figure 4 In the embodiment, the pickling device 200 includes a main shaft 210, a vertical panel 220, a connecting block 230 and a rotating part 300 which are connected in sequence in the horizontal direction. The main shaft 210 is coaxially connected with the vertical panel 220, the connecting block 230 is eccentrically connected between the vertical panel 220 and the rotating part 300, the rotating part 300 is in an inclined state as a whole, and the center of the rotating part 300 is on the axis of the main shaft 210; the main shaft 210 is externally connected to a driving device for rotating the device as a whole. Since the connecting block 230 is eccentrically connected between the rotating part 300 and the vertical panel 220, the rotating part 300 is in an inclined state as a whole, and the center of the rotating part 300 is on the axis of the main shaft 210. 00 direction will revolve around the main shaft 210 with the connecting block 230, and because the rotating part 300 is inclined and the center of the rotating part 300 is on the axis of the main shaft 210, the two ends of the rotating part 300 will continuously rise and fall during the rotation of the rotating part 300, so that the two ends of the rotating part 300 can swing on the vertical plane; that is, the forging is forced to reciprocate continuously along the axial direction in the drum during the rotation, and is flatly distributed in the drum along the axial direction to achieve surface distribution, so as to improve the dispersion of the forgings and increase the contact effect between the forgings and the acid liquid.
[0035] Based on the above, the two ends of the rotating part 300 are continuously swung on the vertical plane while rotating, so that the point distribution is changed into the surface distribution; however, during actual pickling, the forgings are only distributed in the lower half of the rotating part 300 due to the influence of gravity, and the space in the middle and upper parts is wasted.
[0036] Figure 5 shows a schematic diagram of the structure inside the rotating part 300; Figure 5 In the figure, the rotating part 300 includes an outer cylinder 310 and an inner cylinder 320 arranged from outside to inside, and an annular cavity 330 is formed between the outer cylinder 310 and the inner cylinder 320. A plurality of groups of partitions 340 are evenly arranged on the circumference of the annular cavity 330. The plurality of groups of partitions 340 are connected to the outer cylinder 310 and divide the annular cavity 330 into a plurality of chambers. The forgings are distributed in the plurality of chambers to form an annular distribution. The plurality of partitions 340 divide the annular cavity 330 into a plurality of chambers of the same volume. The forgings are evenly placed in the plurality of chambers. The forgings are forced to overcome the influence of gravity and be confined in the chambers through the obstruction of the partitions 340, so that the forgings are evenly distributed in the shape of the annular cavity 330 on a macro scale, forming an annular body distribution, thereby increasing the distribution area of the forgings on a macro scale. When the forgings are relatively evenly distributed, the gaps between the forgings are enlarged. Correspondingly, the dead angles of the forgings during pickling are smaller, and the pickling effect is improved.
[0037] Based on the above, the present application adopts the point, surface and body method to gradually change the distribution state of the forgings in a macroscopic manner and expand the gaps between the forgings; however, the forgings will inevitably come into surface contact with the outer cylinder 310 due to the influence of gravity and centrifugal force in the outer cylinder 310. In this case, the contact surface between the forgings and the outer cylinder 310 cannot contact the acid liquid, and this phenomenon is likely to occur more and more as the rotation speed increases and the centrifugal force increases.
[0038] Figure 6 A schematic diagram of the structure of the outer cylinder 310 and the supporting foot 1 311 is shown; Figure 6In the embodiment, the outer cylinder 310 is hollowed out, and a plurality of groups of supporting feet 311 are evenly arranged inside the outer cylinder 310, and the plurality of supporting feet 311 form a supporting surface spaced from the end wall of the outer cylinder 310, and the end of the supporting foot 311 away from the outer cylinder 310 has a tip, and the gap between two adjacent supporting feet 311 is smaller than the minimum diameter of the forging; the outer cylinder 310 is hollowed out, and when the outer cylinder 310 is immersed in the acid solution, the acid solution can penetrate through the outer cylinder 310 into the interior thereof to contact the forging, and the specific hollowed-out shape is not limited. The present application emphasizes that the acid solution can penetrate through the outer cylinder 310 into the interior thereof, and the side end or curved surface of the outer cylinder 310 can have a feed port to place the forging, which is well known to those skilled in the art. This application will not go into detail, and it does not fall within the scope of protection of this application; a support surface with a distance from the end wall of the outer cylinder 310 is formed by the setting of the support foot 311, thereby blocking the direct contact between the outer cylinder 310 and the forging, so that there is no sealing surface, and the tip of the support foot 311 can make point contact with the forging, while ensuring support, the area of the dead angle of the forging caused by the support is minimized to the greatest extent, and the contact area between the forging and the acid is ensured; the minimum diameter of the forging refers to the distance between the two farthest points on any end face or end of the forging, so that the gap between two adjacent support feet 311 is smaller than the minimum diameter, which can prevent the forging from sinking into or even getting stuck in the gap, so that the gap can roll on the support surface formed by the support foot 311.
[0039] Based on the above, the forgings are distributed in a ring shape along the annular cavity 330 and evenly distributed in several chambers; but correspondingly, the forgings in each chamber can only move within the chamber. Although the forgings are evenly distributed, their allowable range of movement is correspondingly reduced.
[0040] Figure 7The schematic diagram of the structure of the partition 340 is shown; the partition 340 includes a plurality of groups of partitions 341 spaced apart along the axial direction of the outer cylinder 310, and a notch 342 is provided between two adjacent partitions 341 to allow the forging to pass through; the notches 342 in two adjacent groups of partitions 340 are staggered, and on the radial projection surface of the outer cylinder 310, the partition 341 covers the notches 342 in the adjacent groups, and there is a gap between the partition 341 and the inner cylinder 320; by setting the notches 342, the forgings between different chambers are allowed to flow, and the forgings can enter another adjacent chamber from one chamber, and the notches 342 are staggered with each other, and the partition 341 covers the notches 342 on the projection surface, that is, when the forging is only When circumferential movement occurs, chamber conversion cannot occur and axial movement must be coordinated. In this way, when the outer cylinder 310 rotates around the main axis 210, the two ends of the outer cylinder 310 will fluctuate, and the forging will then undergo axial movement. That is to say, only then will the forging undergo conversion between chambers, and the conversion frequency between chambers corresponds to the frequency of the swing. This is to prevent the forgings from being affected by gravity and from continuously undergoing circumferential movement and then reconverging. That is, several groups of forgings undergo circumferential or axial movement at the same time as the outer cylinder 310 rotates around the main axis 210. This can generate forging flow while avoiding forging convergence, so that the forgings remain evenly distributed while flowing.
[0041] Based on the above, the staggered notches 342 are used to force axial movement when switching the chamber, and the swing of the vertical surface of the end of the outer cylinder 310 is used to control the frequency of the forging chamber switching.
[0042] Figure 8 A schematic diagram of the structure inside the inner cylinder 320 is shown; Fig. 9 shows a schematic structural diagram of the stirring member 350; Figure 8 and Fig. 9In the embodiment, a stirring member 350 is rotatably arranged in the inner cylinder 320, and the stirring member 350 includes a central axis 351 coaxially arranged in the inner cylinder 320 and a plurality of stirring blades 352 uniformly arranged around the stirring member 350. The plurality of stirring blades 352 evenly divide the internal space of the inner cylinder 320 into a plurality of compartments, and the forgings are evenly distributed in the plurality of compartments; the forgings can be evenly distributed in the plurality of chambers, so that the internal space of the outer cylinder 310 can be fully utilized, thereby improving the overall utilization rate, and more forgings can be cleaned at one time while ensuring the cleaning effect; the inner cylinder 320 is of hollow design, and when the inner cylinder 320 is immersed in the acid solution, the acid solution can penetrate through the inner cylinder 320 into the interior thereof to contact the forgings, and the specific hollow shape is not limited. The present application emphasizes that the acid solution can penetrate through the inner cylinder 320 into the interior thereof; the interior of the inner cylinder 320 is evenly provided with a plurality of supporting feet Two 321, several groups of supporting feet 2 321 form a supporting surface separated from the end wall of the inner cylinder 320, and the end of the supporting foot 2 321 away from the inner cylinder 320 has a pointed end, and the gap between two adjacent supporting feet 2 321 is smaller than the minimum diameter of the forging; similar to the above-mentioned supporting foot 1 311, the tip of the supporting foot 2 321 can make point contact with the forging, while ensuring support, the area of the dead angle of the forging caused by the support is minimized to the greatest extent, and the contact area between the forging and the acid liquid is ensured; the other end of the stirring piece 352 is equidistantly provided with several groups of tossing feet 353 along its length, and the tossing feet 353 penetrate into the gap formed by two adjacent groups of supporting feet 2 321, and the tossing feet 353 and the supporting feet 2 321 are staggered; in this way, when the stirring piece 350 rotates, the tossing feet 353 can penetrate into the supporting surface to facilitate the active flipping of the tossing forging to avoid jamming of the forging.
[0043] Fig.10 A schematic structural diagram showing the connection relationship between the outer cylinder 310 and the connection block 230 is shown; Fig.10 In the figure, an inclined panel 360 is connected between the outer cylinder 310 and the connecting block 230, the outer cylinder 310 is rotatably connected to the inclined panel 360, and the stirring member 350 is rotatably connected to the inclined panel 360; the inclined panel 360 is arranged at the end of the outer cylinder 310, which can block the outer cylinder 310 and indirectly connect the outer cylinder 310 to the connecting block 230 to avoid leakage during the pickling process.
[0044] Fig.11 A schematic structural diagram showing the rotational relationship between the stirring member 350 and the outer cylinder 310 is shown; Fig.11 Combination Fig.10, an outer gear ring 312 is coaxially connected to the outer cylinder 310, and a secondary shaft 361 is rotatably connected to the inclined panel 360, and a gear 1 362 meshing with the outer gear ring 312 is connected to the secondary shaft 361 at one end facing the outer cylinder 310; when the secondary shaft 361 is driven by an external force to rotate, it drives the gear 1 362 to rotate and drives the outer gear ring 312 to rotate, that is, the outer cylinder 310 is forced to rotate while revolving around the main axis 210, so that the outer cylinder 310 rotates during the swinging process, thereby changing the forging to roll in each chamber instead of simply flowing circumferentially along the trajectory of the notch 342, and the partition 341 accelerates the swing to stir the torrent in a fixed direction, so that the acid has a certain kinetic energy to impact the forging of the inner cylinder 320, destroying the loose impurity layer on the outer surface of the forging; the other end of the secondary shaft 361 is connected to the gear 2 363, and the middle shaft 351 The extended end passes through the inclined panel 360 and is connected to a gear three 364, and a gear four 365 is rotatably connected to the inclined panel 360, and the gear four 365 is respectively meshed with the gear two 363 and the gear three 364, and the stirring member 350 and the outer cylinder 310 rotate in opposite directions at a differential speed; since the stirring member 350 and the outer cylinder 310 rotate in opposite directions, the stirring blade 352 and the partition 341 can form two convection currents in opposite directions, and when the two convection currents collide, turbulence can be formed at the collision point, so as to flush the internal forgings at multiple angles and directions, and since the stirring member 350 and the outer cylinder 310 rotate at a differential speed, the differential speed here refers to the speed difference between the outer edge of the stirring blade 352 and the inner side of the partition 341. Therefore, the partition 341 and the stirring blade 352 can cause turbulence irregularly at any point inside the outer cylinder 310 to achieve comprehensive flushing of the forgings in the outer cylinder 310.
[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.
Claims
1. A pickling device for removing α layer of titanium alloy, rotatably arranged in a pickling tank (100), characterized in that: The invention comprises a main shaft (210), a vertical panel (220), a connecting block (230), and a rotating part (300) which are connected in sequence in a horizontal direction, wherein the main shaft (210) is coaxially connected to the vertical panel (220), the connecting block (230) is eccentrically connected between the vertical panel (220) and the rotating part (300), the rotating part (300) is in an inclined state as a whole, and the center of the rotating part (300) is on the axis of the main shaft (210).
2. The pickling device for removing the α layer of titanium alloy according to claim 1 is characterized in that: The rotating part (300) comprises an outer cylinder (310) and an inner cylinder (320) arranged in a spaced manner from outside to inside, an annular cavity (330) is formed between the outer cylinder (310) and the inner cylinder (320), a plurality of groups of partitions (340) are evenly arranged in the circumferential direction of the annular cavity (330), the plurality of groups of partitions (340) are connected to the outer cylinder (310) and divide the annular cavity (330) into a plurality of chambers, and the forgings are distributed in the plurality of chambers to form an annular distribution.
3. The pickling device for removing the α layer of titanium alloy according to claim 2 is characterized in that: A plurality of groups of support feet one (311) are evenly arranged inside the outer cylinder (310), and the plurality of groups of support feet one (311) form a support surface spaced apart from the end wall of the outer cylinder (310).
4. The pickling device for removing the α layer of titanium alloy according to claim 3 is characterized in that: The end of the supporting foot 1 (311) away from the outer cylinder (310) has a pointed end.
5. The pickling device for removing the α layer of titanium alloy according to claim 4, characterized in that: The gap between two adjacent support legs (311) is smaller than the minimum diameter of the forging.
6. The pickling device for removing the α layer of titanium alloy according to claim 5, characterized in that: The partition (340) comprises a plurality of groups of partitions (341) spaced apart and distributed along the axial direction of the outer cylinder (310), and a notch (342) is provided between two adjacent partitions (341) to allow forgings to pass through.
7. The pickling device for removing the α layer of titanium alloy according to claim 6, characterized in that: The positions of the notches (342) in two adjacent groups of spacers (340) are staggered.
8. The pickling device for removing the α layer of titanium alloy according to claim 7, characterized in that: On the radial projection surface of the outer cylinder (310), the partition (341) covers the notches (342) in adjacent groups.
9. The pickling device for removing the α layer of titanium alloy according to claim 8, characterized in that: There is a gap between the partition plate (341) and the inner cylinder (320); A stirring piece (350) is rotatably arranged in the inner cylinder (320), the stirring piece (350) comprising a central axis (351) coaxially arranged in the inner cylinder (320) and a plurality of groups of stirring blades (352) uniformly arranged in the circumferential direction around the stirring piece (350), the plurality of groups of stirring blades (352) uniformly dividing the internal space of the inner cylinder (320) into a plurality of compartments, and the forgings are uniformly distributed in the plurality of compartments; The outer cylinder (310) and the inner cylinder (320) are both hollow-out in design.
10. The pickling device for removing the α layer of titanium alloy according to claim 9, characterized in that: A plurality of groups of supporting feet 2 (321) are evenly arranged inside the inner cylinder (320), the plurality of groups of supporting feet 2 (321) forming a supporting surface spaced from the end wall of the inner cylinder (320), the ends of the supporting feet 2 (321) away from the inner cylinder (320) having a pointed end, and the gap between two adjacent supporting feet 2 (321) being smaller than the minimum diameter of the forging; The other end of the stirring blade (352) is provided with a plurality of groups of moving feet (353) arranged equidistantly along its length, the moving feet (353) piercing into the gap formed by two adjacent groups of the second supporting feet (321), and the moving feet (353) and the second supporting feet (321) are arranged in a staggered manner; The inclined panel (360) is connected between the outer cylinder (310) and the connection block (230); the outer cylinder (310) is rotatably connected to the inclined panel (360); and the stirring member (350) is rotatably connected to the inclined panel (360); An outer gear ring (312) is coaxially connected to the outer side of the outer cylinder (310), a secondary shaft (361) is rotatably connected to the inclined panel (360), and a gear 1 (362) meshing with the outer gear ring (312) is connected to one end of the secondary shaft (361) facing the outer cylinder (310); The other end of the secondary shaft (361) is connected to gear 2 (363); the extended end of the middle shaft (351) passes through the inclined panel (360) and is connected to gear 3 (364); a gear 4 (365) is rotatably connected to the inclined panel (360); the gear 4 (365) is respectively meshed with gear 2 (363) and gear 3 (364); the stirring element (350) and the outer cylinder (310) rotate in opposite directions at differential speeds.