Tantalum metal billet rolling equipment and tantalum metal billet rolling method

Abstract

The present invention discloses a tantalum metal billet rolling equipment, comprising a mounting plate, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a first cylindrical roller, a second cylindrical roller and a rolling device, wherein the mounting plate, the second frame, the first cylinder, the first cylindrical roller and the rolling device are arranged in sequence along the moving direction of the tantalum metal billet, the mounting plate is used to place the tantalum metal billet, the axis of the first cylinder is parallel to the axis of the second cylinder, the axis of the third cylinder is parallel to the axis of the fourth cylinder and is not parallel to the axis of the first cylinder, the first cylindrical roller and the second cylindrical roller are respectively provided with a first annular groove and a second annular groove on their outer circumferential surfaces for the tantalum metal billet to pass through, the first annular groove and the second annular groove overlap or intersect in the vertical direction, and the rolling device comprises a plurality of horizontal roller groups and vertical roller groups arranged alternately, the horizontal roller group comprises a first roller and a second roller, and the vertical roller group comprises a third roller and a fourth roller.

Description

Technical Field

[0001] The present invention relates to the technical field of tantalum metal processing, and in particular to a tantalum metal billet rolling device and a tantalum metal billet rolling method. Background Art

[0002] Tantalum metal includes tantalum and tantalum alloys. The rolling of tantalum metal billets belongs to niche metal processing. There is no mature dedicated large-scale rolling equipment. Traditional two-roll mills are mostly used for rolling. The operator introduces the billet into multiple hole patterns on the rolls in sequence to complete multiple rolling passes. Sometimes the wrong introduction of the hole pattern may cause the pass processing rate to be too large, thereby damaging the mill or material. The two-roll mill has low rolling efficiency, high labor intensity, unsafe equipment and materials, and is difficult to achieve automation and digital control. There are serious environmental pollution such as noise and oil smoke. There are multiple hole grooves on the rolls of the original two-roll mill to form a hole system. The operation process is coordinated by two people. One person introduces the metal billet into the hole pattern of the two-roll mill from the front end of the mill feed. The metal billet is rolled through the hole pattern. The other person sends the metal billet back to the front end of the mill feed from the rear end of the mill discharge. In this way, it is rolled in the hole pattern system in a single direction multiple times. This operation method is inefficient, labor-intensive, and has poor safety assurance. Summary of the invention

[0003] The object of the present invention is to provide a tantalum metal billet rolling equipment and a tantalum metal billet rolling method which can roll the tantalum metal billet more efficiently and with higher quality.

[0004] The first aspect of the present invention discloses a tantalum metal billet rolling equipment, comprising a first frame, a mounting plate rotatably arranged relative to the first frame, a second frame, a first cylinder and a second cylinder arranged at intervals in the vertical direction and hinged and arranged relative to the second frame, a third cylinder and a fourth cylinder arranged at intervals in the horizontal direction and hinged and arranged relative to the second frame, a first cylindrical roller and a second cylindrical roller arranged at intervals in the horizontal direction and hinged and arranged relative to the second frame, and a rolling device, wherein the mounting plate, the second frame, the first cylinder, the first cylindrical roller and the rolling device are arranged in sequence along the moving direction of the tantalum metal billet, the mounting plate is used to place the tantalum metal billet, the axis of the first cylinder is coaxial with the axis of its hinge with the second frame, the axis of the second cylinder is coaxial with the axis of its hinge with the second frame, the axis of the first cylinder is parallel to the axis of the second cylinder, and the axis of the third cylinder is parallel to the axis of its hinge with the second frame. The axes of articulation are coaxial, the axis of the fourth cylinder is coaxial with the axis of its articulation with the second frame, the axis of the third cylinder is parallel to the axis of the fourth cylinder and is not parallel to the axis of the first cylinder, the axis of the first cylindrical roller is coaxial with the axis of its articulation with the second frame and both are in the vertical direction, the axis of the second cylindrical roller is coaxial with the axis of its articulation with the second frame and both are in the vertical direction, the first cylindrical roller and the second cylindrical roller are respectively provided with a first annular groove and a second annular groove for the passage of tantalum metal billets on their outer circumferential surfaces, the first annular groove and the second annular groove overlap or intersect in the vertical direction, the rolling device includes a plurality of roller groups arranged in sequence along the moving direction of the tantalum metal billet, the plurality of roller groups include a plurality of horizontal roller groups and vertical roller groups arranged alternately, the horizontal roller group includes a first roller and a second roller with a rotation axis along the horizontal direction, and the vertical roller group includes a third roller and a fourth roller with a rotation axis along the vertical direction.

[0005] In some embodiments, the groove profiles of the plurality of adjacent roll groups form a diamond-square groove profile system.

[0006] In some embodiments, the horizontal roller group also includes a first servo motor and a second servo motor respectively connected to the first roller and the second roller, and the vertical roller group also includes a third servo motor and a fourth servo motor respectively connected to the third roller and the fourth roller.

[0007] In some embodiments, the rolling device also includes a first guide component arranged between adjacent rolling roll groups, the first guide component includes a first hole and a second hole that are interconnected for passing the tantalum metal billet, along the moving direction of the tantalum metal billet, the first hole is located upstream of the second hole, the cross-sectional area of ​​the first hole gradually decreases along the moving direction of the tantalum metal billet, and the second hole is a straight hole.

[0008] In some embodiments, the rolling device also includes a third frame and a second guide device arranged between adjacent rolling roller groups for the tantalum metal billet to pass through, the second guide device includes a third cylindrical roller and a fourth cylindrical roller arranged at intervals in the horizontal direction and hinged to the third frame and arranged opposite to each other, the axis of the third cylindrical roller and the axis of its hinge with the third frame are coaxial and both are along the vertical direction, the axis of the fourth cylindrical roller and the axis of its hinge with the third frame are coaxial and both are along the vertical direction, between two adjacent rolling roller groups, along the moving direction of the tantalum metal billet, the second guide device is located downstream of the first guide device.

[0009] In some embodiments, a wire-taking device for taking up the tantalum metal billet after passing through a rolling device is also included, the wire-taking device includes a wire-taking drum, the wire-taking drum includes a contraction section and an entry section for entering the tantalum metal billet, the outer peripheral surface of the wire-taking drum gradually decreases in diameter along the axial direction from the entry section to the contraction section, the wire-taking drum also includes a fixing portion for fixing the free end of the tantalum metal billet, the fixing portion is close to the contraction section relative to the entry section.

[0010] In some embodiments, the fixing portion includes a fixing hole provided on an end portion of the wire take-up device.

[0011] The second aspect of the present invention discloses a method for rolling tantalum metal billets using any of the tantalum metal billet rolling equipment, comprising: placing the tantalum metal billet on a mounting plate; passing the tantalum metal billet through the gap between the first cylinder and the second cylinder and through the gap between the third cylinder and the fourth cylinder and then through the gap between the first annular groove of the first cylindrical roller and the second annular groove of the second cylindrical roller; and then rolling the tantalum metal billet using the first and second rollers of the horizontal roller group and the third and fourth rollers of the vertical roller group.

[0012] In some embodiments, the tantalum metal billet rolling equipment further includes a wire taking-up device for taking up the tantalum metal billet after passing through the rolling device, the wire taking-up device includes a wire taking-up drum, the wire taking-up drum includes a contraction section and an entry section for entering the tantalum metal billet, the outer circumference of the wire taking-up drum gradually decreases in diameter along the axial direction from the entry section to the contraction section, the wire taking-up drum also includes a fixing portion for fixing the free end of the tantalum metal billet, the fixing portion is close to the contraction section relative to the entry section, the rolling method of the tantalum metal billet further includes: feeding the tantalum metal billet after passing through the rolling device into the entry section of the wire taking-up drum, and fixing the free end of the tantalum metal billet to the fixing portion after the entry section wraps around the outer circumference of the entry section once, and then rotating the wire taking-up drum to take up the tantalum metal billet.

[0013] In some embodiments, it also includes: selecting tantalum alloy rods, sintering or annealing them to eliminate processing stress, so as to form the tantalum metal billet; using the first and second rollers of the horizontal roller group and the third and fourth rollers of the vertical roller group to roll the tantalum metal billet, including: the rolling device includes more than four roller groups, the hole profiles of the initial multiple roller groups of the rolling device form a diamond-square hole type system, so that the tantalum metal billet passes through the initial multiple roller groups of the rolling grooves and at the same time the rollers of the roller group are driven by a servo motor to make the tantalum metal billet undergo multiple cold rolling processes, and the hole profiles of the rolling grooves of the last two roller groups of the rolling device form an elliptical-circular hole type system, so that the tantalum metal billet finally passes through the grooves of the last two roller groups.

[0014] In some embodiments, the rolling device rolls the metal billet a total of 15-19 passes, each pass has a processing rate of 8% to 15%, and the total processing rate of the tantalum metal billet by the rolling device is 80% to 95%.

[0015] In some embodiments, the rolling speed of the metal billet by the rolling device is 10-100 m / min, and the linear speed of the rollers of the rolling roller group is greater than the linear speed of the tantalum metal billet.

[0016] Based on the tantalum metal billet rolling equipment provided by the present invention, by providing a rotatable mounting plate and a rolling device having a plurality of horizontal roller groups and a vertical roller group arranged alternately, the tantalum metal billet can be continuously and effectively rolled, and the rolling efficiency is high. At the same time, by providing a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a first cylindrical roller and a second cylindrical roller and other structures in front of the rolling device, the tantalum metal billet can be stably and reliably entered into the rolling device, and the tantalum metal billet can be rolled with high quality by utilizing the alternately arranged horizontal roller groups and vertical roller groups of the rolling device.

[0017] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It is a schematic structural diagram of a tantalum metal billet rolling device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of a part of the structure of a tantalum metal billet rolling equipment shown;

[0021] Figure 3 for Figure 2 A top view of a portion of the structure shown;

[0022] Figure 4 for Figure 1 A schematic diagram of a part of the structure of a tantalum metal billet rolling equipment shown;

[0023] Figure 5 for Figure 4 a top view of the structure shown;

[0024] Figure 6 It is a schematic structural diagram of a tantalum metal billet rolling device according to another embodiment of the present invention;

[0025] Figure 7 for Figure 1 A partially sectional structural schematic diagram of a wire take-up device of a tantalum metal billet rolling equipment shown;

[0026] Figure 8 for Figure 7 a top view of the structure shown;

[0027] Fig. 9 for Figure 1 A schematic cross-sectional view of the second guide device of the tantalum metal billet rolling equipment shown;

[0028] Fig.10 for Fig. 9 A schematic structural diagram of the structure shown from another angle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] The tantalum metal billet rolling equipment of this embodiment includes a first frame 11, a mounting plate 111, a second frame 12, a first cylinder 21, a second cylinder 22, a third cylinder 23, a fourth cylinder 24, a first cylindrical roller 31, a second cylindrical roller 32, and a rolling device. The mounting plate 111 is rotatably arranged relative to the first frame 11. The first cylinder 21 and the second cylinder 22 are arranged relative to each other and spaced apart in the vertical direction, and the first cylinder 21 and the second cylinder 22 are both hinged relative to the second frame 12. The third cylinder 23 and the fourth cylinder 24 are arranged relative to each other and spaced apart in the horizontal direction, and the third cylinder 23 and the fourth cylinder 24 are arranged relative to each other, and the third cylinder 23 and the fourth cylinder 24 are both hinged relative to the second frame 12. The first cylindrical roller 31 and the second cylindrical roller 32 are arranged relative to each other and spaced apart in the horizontal direction, and the first cylindrical roller 31 and the second cylindrical roller 32 are both hinged to the second frame 12.

[0035] The mounting plate 111, the second frame 12, the first cylinder 21, the first cylindrical roller 31 and the rolling device are arranged in sequence along the moving direction of the tantalum metal blank. The mounting plate 111 is used to place the tantalum metal blank. After the tantalum metal blank 100 is placed on the mounting plate, when the tantalum metal blank is rolled, Figure 1 As shown, the strip-shaped billet is drawn out from the tantalum metal billet 100 on the mounting plate, and then passes through the first cylinder 21 and the second cylinder 22, the first cylindrical roller 31 and the second cylindrical roller 32, and then passes through the rolling device for rolling. The moving direction of the tantalum metal billet is also the direction in which the strip-shaped billet drawn out from the mounting plate passes through the first cylinder 21 and the second cylinder 22, the first cylindrical roller 31 and the second cylindrical roller 32 and the rolling device in sequence. Figure 1 , Figure 3 and Figure 4As shown, the axis of the first cylinder 21 is coaxial with the axis of the hinge connection with the second frame 12, the axis of the second cylinder 22 is coaxial with the axis of the hinge connection with the second frame 12, the axis of the first cylinder 21 is parallel to the axis of the second cylinder 22, the axis of the third cylinder 23 is coaxial with the axis of the hinge connection with the second frame 12, the axis of the fourth cylinder 24 is coaxial with the axis of the hinge connection with the second frame 12, the axis of the third cylinder 23 is parallel to the axis of the fourth cylinder 24 and is not parallel to the axis of the first cylinder 21. In the embodiment shown in the figure, the axis of the first cylinder is in the horizontal direction, and the axis of the third cylinder is in the vertical direction. The axis of the first cylindrical roller 31 and the axis at which it is hinged to the second frame 12 are coaxial and both are along the vertical direction. The axis of the second cylindrical roller 32 and the axis at which it is hinged to the second frame 12 are coaxial and both are along the vertical direction. The first cylindrical roller 31 and the second cylindrical roller 32 are respectively provided with a first annular groove 311 and a second annular groove for the tantalum metal billet to pass through on their outer circumferential surfaces. The first annular groove 311 and the second annular groove overlap or intersect in the vertical direction. In the embodiment shown in the figure, the shapes of the first annular groove 311 and the second annular groove are symmetrical, and the two overlap in the vertical direction. Thus, during rolling, the first cylinder 21, the second cylinder 22, and the third cylinder 23 and the fourth cylinder 24 which are not parallel to the axis thereof guide the strip-shaped tantalum metal blank from two different directions, and the strip-shaped tantalum metal blank then passes through the first annular groove 311 and the second annular groove which overlap or intersect in the vertical direction, and the first annular groove and the second annular groove can further form a stable guiding effect on the strip-shaped tantalum metal blank, so that the tantalum metal blank can stably and smoothly enter the rolling device to ensure the rolling effect. The rolling device includes a plurality of roller groups arranged in sequence along the moving direction of the tantalum metal blank, and the plurality of roller groups include a plurality of horizontal roller groups 61 and a vertical roller group 62 arranged alternately, the horizontal roller group 61 includes a first roller 611 and a second roller 612 whose rotation axis is in the horizontal direction, and the vertical roller group 62 includes a third roller and a fourth roller whose rotation axis is in the vertical direction. The tantalum metal billet can be continuously rolled by passing through the horizontal roller group 61 and the vertical roller group 62. The setting of the horizontal roller group and the vertical roller group can make the force on the tantalum metal billet more uniform during rolling, thereby improving the rolling quality.

[0036] The tantalum metal billet rolling equipment of this embodiment can continuously and effectively roll the tantalum metal billet by providing a rotatable mounting plate 111 and a rolling device having a plurality of horizontal roll groups 61 and vertical roll groups 62 arranged alternately, and the rolling efficiency is high. At the same time, by providing the first cylinder 21, the second cylinder 22, the third cylinder 23, the fourth cylinder 24, the first cylindrical roller 31 and the second cylindrical roller 32 and other structures in front of the rolling device, the tantalum metal billet can be stably and reliably entered into the rolling device, and the tantalum metal billet can be rolled with high quality by utilizing the alternately arranged horizontal roll groups 61 and vertical roll groups 62 of the rolling device.

[0037] In some embodiments, the grooves of multiple adjacent roll groups form a diamond-square groove system. The grooves of two rolls of the roll group form a groove, and the shape of the groove determines the shape and size of the cross section of the metal passing through the two rolls. The grooves of multiple roll groups also form a groove system. The diamond-square groove system is a groove system in rolling processing, which is in the shape of a diamond or approximately diamond, and is distributed on specific rolling passes to form a groove system combination.

[0038] In some embodiments, the horizontal roller group 61 further includes a first servo motor and a second servo motor respectively connected to the first roller 611 and the second roller 612, and the vertical roller group 62 further includes a third servo motor and a fourth servo motor respectively connected to the third roller and the fourth roller. The rollers of each pass of the roller group are controlled by servo motors, and the rolling state of the equipment is displayed on the operation panel, and digital settings and adjustments are quickly performed to accurately control the rotation speed of each roller, thereby adjusting the linear speed between rolling passes, and ensuring that the rotation speed of each roller during the rolling process is consistent with the plastic deformation flow speed of the material itself of the rolled billet.

[0039] In some embodiments, Figure 1 and Fig. 9 As shown, in order to help the tantalum metal billet to smoothly enter the rolling groove of the next rolling group after being rolled by the rolling group, the rolling device also includes a first guide component 5 arranged between adjacent rolling groups, and the first guide component 5 includes a first hole 51 and a second hole 52 that are interconnected and used to pass the tantalum metal billet. Along the moving direction of the tantalum metal billet, the first hole 51 is located upstream of the second hole 52, and the cross-sectional area of ​​the first hole 51 gradually decreases along the moving direction of the tantalum metal billet, and the second hole 52 is a linear hole. The structural setting of the first hole 51 can effectively and gradually adjust the position of the tantalum metal billet, and the setting of the second hole 52 can accurately fix the position of the adjusted tantalum metal billet, thereby ensuring that it can accurately enter the next rolling group to achieve effective rolling.

[0040] In some embodiments, in order to ensure that the tantalum metal billet can enter the rolling groove of the next rolling roller group more accurately, the rolling device also includes a third frame 13 and a second guide device for the tantalum metal billet to pass through, which is arranged between adjacent rolling roller groups. The second guide device includes a third cylindrical roller and a fourth cylindrical roller 23 that are arranged at intervals in the horizontal direction and are hinged to the third frame 13 and arranged relatively. The axis of the third cylindrical roller and the axis of its hinge with the third frame 13 are coaxial and both are in the vertical direction. The axis of the fourth cylindrical roller 23 and the axis of its hinge with the third frame 13 are coaxial and both are in the vertical direction. Between two adjacent rolling roller groups, along the moving direction of the tantalum metal billet, the second guide device is located downstream of the first guide device. The arrangement of the third cylindrical roller and the fourth cylindrical roller 23 can better resolve the fluctuation of the tantalum metal billet, making the position of the tantalum metal billet more stable and further improving the rolling quality.

[0041] In some embodiments, Figure 1 , Figure 7 and Figure 8 As shown, the tantalum metal billet rolling equipment also includes a wire-taking device 4 for taking up the tantalum metal billet after passing through the rolling device, the wire-taking device 4 includes a wire-taking drum, the wire-taking drum includes a contraction section 42 and an entry section 41 for entering the tantalum metal billet, the outer peripheral surface of the wire-taking drum gradually decreases in diameter along the axial direction from the entry section 41 to the contraction section 42, the wire-taking drum also includes a fixing portion 43 for fixing the free end of the tantalum metal billet, the fixing portion 43 is close to the contraction section 42 relative to the entry section 41. The rolled tantalum metal billet enters the wire-taking device from the wire-entry segment 41. After being wound around the outer circumference of the wire-entry segment 41 for one circle, the free end of the tantalum metal billet is fixed to the fixing portion 43. Then, as the wire-taking drum rotates, the length of the wire segment of the tantalum metal billet entering the wire-taking drum becomes longer and longer. Since the diameter of the outer circumference of the wire-taking drum of this embodiment gradually decreases along the axial direction from the wire-entry segment 41 to the contraction segment 42, the wire segment of the tantalum metal billet that enters the wire-entry segment 41 later will squeeze the wire segment of the tantalum metal billet that enters the wire-entry segment 41 earlier, so that the wire segments of the tantalum metal billet gradually gather in the direction of the contraction segment 42, thereby realizing the automatic winding and arrangement of the tantalum metal billet.

[0042] In some embodiments, the fixing portion 43 includes a fixing hole provided on the end of the wire take-up device 4. The fixing hole can be provided so that the free end of the tantalum metal blank can be hooked into the fixing hole by simply bending it, thereby quickly achieving the connection between the tantalum metal blank and the fixing portion.

[0043] In some embodiments, a method for rolling tantalum metal billets using any of the above-mentioned tantalum metal billet rolling equipment is also disclosed, comprising: placing the tantalum metal billet on a mounting plate 111; passing the tantalum metal billet through a gap between the first cylinder 21 and the second cylinder 22 and through a gap between the third cylinder 23 and the fourth cylinder 24, and then through a gap between the first annular groove 311 of the first cylindrical roller 31 and the second annular groove of the second cylindrical roller 32; and then rolling the tantalum metal billet using the first roller 611 and the second roller 612 of the horizontal roller group 61 and the third roller and the fourth roller of the vertical roller group 62.

[0044] In some embodiments, the tantalum metal billet rolling equipment further includes a wire taking-up device 4 for taking up the tantalum metal billet after the rolling device, the wire taking-up device 4 taking-up drum, the wire taking-up drum including a contraction section 42 and an entry section 41 for entering the tantalum metal billet, the outer peripheral surface of the wire taking-up drum gradually decreases in diameter along the axial direction from the entry section 41 to the contraction section 42, the wire taking-up drum also includes a fixing portion 43 for fixing the free end of the tantalum metal billet, the fixing portion 43 is close to the contraction section 42 relative to the entry section 41, and the rolling method of the tantalum metal billet further includes: feeding the tantalum metal billet after the rolling device into the entry section 41 of the wire taking-up drum, and fixing the free end of the tantalum metal billet to the fixing portion 43 after the entry section 41 wraps around the outer peripheral surface of the entry section 41 once, and then rotating the wire taking-up drum to take up the tantalum metal billet.

[0045] In some embodiments, it also includes: selecting tantalum alloy rods, sintering or annealing them to eliminate processing stress to form tantalum metal billets; using the first roller 611 and the second roller 612 of the horizontal roller group 61 and the third roller and the fourth roller of the vertical roller group 62 to roll the tantalum metal billet, including: the rolling device includes more than four roller groups, the hole profiles of the rolling grooves of the initial multiple roller groups of the rolling device form a diamond-square hole type system, so that the tantalum metal billet passes through the rolling grooves of the initial multiple roller groups and at the same time the rollers of the roller group are driven by a servo motor to make the tantalum metal billet undergo multiple cold rolling processes, and the hole profiles of the rolling grooves of the last two roller groups of the rolling device form an elliptical-circular hole type system, so that the tantalum metal billet finally passes through the rolling grooves of the last two roller groups.

[0046] In some embodiments, the total number of passes of the rolling device on the metal billet is 15-19, the processing rate of each pass is 8% to 15%, and the total processing rate of the rolling device on the tantalum metal billet is 80% to 95%. Processing rate: It is an indicator to measure the degree of deformation of the material during the processing. In fields such as metal processing, the processing rate is usually expressed as the ratio of the dimensional change of the material before and after processing to the original size. A higher processing rate means that the material has undergone a greater degree of deformation, but too high a processing rate may cause changes in material properties, defects, and other problems.

[0047] In some embodiments, the rolling speed of the metal billet by the rolling device is 10-100 m / min, and the linear speed of the rolls of the rolling group is greater than the linear speed of the tantalum metal billet.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A tantalum metal billet rolling equipment, characterized in that: The invention comprises a first frame, a mounting plate rotatably arranged relative to the first frame, a second frame, a first cylinder and a second cylinder arranged at intervals in the vertical direction and hinged and arranged opposite to the second frame, a third cylinder and a fourth cylinder arranged at intervals in the horizontal direction and hinged and arranged opposite to the second frame, a first cylindrical roller and a second cylindrical roller arranged at intervals in the horizontal direction and hinged and arranged opposite to the second frame, and a rolling device, wherein the mounting plate, the second frame, the first cylinder, the first cylindrical roller and the rolling device are arranged in sequence along the moving direction of the tantalum metal billet, the mounting plate is used to place the tantalum metal billet, the axis of the first cylinder is coaxial with the axis of its hinge with the second frame, the axis of the second cylinder is coaxial with the axis of its hinge with the second frame, the axis of the first cylinder is parallel to the axis of the second cylinder, the axis of the third cylinder is coaxial with the axis of its hinge with the second frame, and the axis of the first cylinder is parallel to the axis of the second cylinder. The axes of the four cylinders are coaxial with the axes of their hinges with the second frame, the axes of the third cylinder and the fourth cylinder are parallel and not parallel to the axis of the first cylinder, the axes of the first cylindrical roller and the axes of their hinges with the second frame are coaxial and both are in the vertical direction, the axes of the second cylindrical roller and the axes of their hinges with the second frame are coaxial and both are in the vertical direction, the outer circumferential surfaces of the first cylindrical roller and the second cylindrical roller are respectively provided with a first annular groove and a second annular groove for the passage of tantalum metal billets, the first annular groove and the second annular groove overlap or intersect in the vertical direction, the rolling device includes a plurality of roller groups arranged in sequence along the moving direction of the tantalum metal billet, the plurality of roller groups include a plurality of horizontal roller groups and vertical roller groups arranged alternately, the horizontal roller group includes a first roller and a second roller with a rotation axis along the horizontal direction, and the vertical roller group includes a third roller and a fourth roller with a rotation axis along the vertical direction.

2. The tantalum metal billet rolling equipment according to claim 1, characterized in that: The groove profiles of the plurality of adjacent roll groups form a diamond-square groove profile system.

3. The tantalum metal billet rolling equipment according to claim 1, characterized in that: The horizontal roller group further includes a first servo motor and a second servo motor respectively connected to the first roller and the second roller, and the vertical roller group further includes a third servo motor and a fourth servo motor respectively connected to the third roller and the fourth roller.

4. The tantalum metal billet rolling equipment according to claim 1, characterized in that: The rolling device also includes a first guide component arranged between adjacent rolling roll groups, the first guide component includes a first hole and a second hole that are interconnected for passing the tantalum metal billet, along the moving direction of the tantalum metal billet, the first hole is located upstream of the second hole, the cross-sectional area of ​​the first hole gradually decreases along the moving direction of the tantalum metal billet, and the second hole is a linear hole.

5. The tantalum metal billet rolling equipment according to claim 4, characterized in that: The rolling device also includes a third frame and a second guide device arranged between adjacent rolling roller groups for the tantalum metal billet to pass through, the second guide device includes a third cylindrical roller and a fourth cylindrical roller which are arranged at intervals in the horizontal direction, hinged to the third frame and arranged opposite to each other, the axis of the third cylindrical roller and the axis of its hinge with the third frame are coaxial and both are along the vertical direction, the axis of the fourth cylindrical roller and the axis of its hinge with the third frame are coaxial and both are along the vertical direction, between two adjacent rolling roller groups, along the moving direction of the tantalum metal billet, the second guide device is located downstream of the first guide device.

6. The tantalum metal billet rolling equipment according to claim 1, characterized in that: It also includes a wire-taking device for taking up the tantalum metal billet after passing through the rolling device, the wire-taking device includes a wire-taking drum, the wire-taking drum includes a contraction section and an entry section for entering the tantalum metal billet, the outer peripheral surface of the wire-taking drum gradually decreases in diameter along the axial direction from the entry section to the contraction section, the wire-taking drum also includes a fixing portion for fixing the free end of the tantalum metal billet, the fixing portion is close to the contraction section relative to the entry section.

7. The tantalum metal billet rolling equipment according to claim 6, characterized in that: The fixing portion includes a fixing hole provided on an end portion of the wire taking-up device.

8. A method for rolling tantalum metal billets using the tantalum metal billet rolling equipment according to any one of claims 1 to 6, characterized in that: include: placing the tantalum metal blank on the mounting plate; The tantalum metal billet is passed through the gap between the first cylinder and the second cylinder, the gap between the third cylinder and the fourth cylinder, and then through the gap between the first annular groove of the first cylindrical roller and the second annular groove of the second cylindrical roller; then the tantalum metal billet is rolled using the first and second rollers of the horizontal roller group and the third and fourth rollers of the vertical roller group.

9. The method for rolling a tantalum metal billet according to claim 8, characterized in that: The tantalum metal billet rolling equipment also includes a wire-taking device for winding up the tantalum metal billet after passing through the rolling device, the wire-taking device includes a wire-taking drum, the wire-taking drum includes a contraction section and an entry section for entering the tantalum metal billet, the outer circumference of the wire-taking drum gradually decreases in diameter along the axial direction from the entry section to the contraction section, the wire-taking drum also includes a fixing portion for fixing the free end of the tantalum metal billet, the fixing portion is close to the contraction section relative to the entry section, the rolling method of the tantalum metal billet also includes: feeding the tantalum metal billet after passing through the rolling device into the entry section of the wire-taking drum, and fixing the free end of the tantalum metal billet to the fixing portion after the entry section wraps around the outer circumference of the entry section once, and then rotating the wire-taking drum to wind up the tantalum metal billet.

10. The method for rolling a tantalum metal billet according to claim 8, characterized in that: Also includes: Selecting a tantalum alloy rod, and sintering or annealing it to eliminate processing stress, so as to form the tantalum metal blank; The method of rolling the tantalum metal billet by using the first and second rollers of the horizontal roller group and the third and fourth rollers of the vertical roller group comprises: the rolling device comprises more than four roller groups, the hole profiles of the rolling grooves of the initial plurality of roller groups of the rolling device form a diamond-square hole profile system, so that the tantalum metal billet passes through the rolling grooves of the initial plurality of roller groups and the rollers of the roller groups are driven by a servo motor at the same time so that the tantalum metal billet undergoes a multi-pass cold rolling process, and the hole profiles of the rolling grooves of the last two roller groups of the rolling device form an elliptical-circular hole profile system, so that the tantalum metal billet finally passes through the rolling grooves of the last two roller groups.

11. The method for rolling a tantalum metal billet according to claim 10, characterized in that: The total number of passes of the rolling device for rolling the metal billet is 15-19, the processing rate of each pass is 8%-15%, and the total processing rate of the rolling device for the tantalum metal billet is 80%-95%.

12. The method for rolling a tantalum metal billet according to claim 11, characterized in that: The rolling speed of the metal blank by the rolling device is 10-100 m / min, and the linear speed of the rolls of the rolling roller group is greater than the linear speed of the tantalum metal blank.

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