Straightening device for tantalum-niobium alloy bar
By designing the straightening body, straightening screw and limiting plate of the straightening device, the problem of difficulty in fully straightening the bending section of the alloy rod during the rolling process is solved, and a higher linear accuracy is achieved.
Patent Information
- Application Number
- CN202422030998.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-21
AI Technical Summary
There is a linearity error in the alloy rod during the rolling process, which makes it difficult to fully straighten the bending section, affecting the subsequent processing accuracy.
A straightening device including a straightening body, a straightening mechanism and a limiting body is designed, and external force is applied to the bending section through a straightening screw and an arc-shaped straightening plate, and the limiting plate is used to restrict the rotation of the bar to avoid circumferential deflection and improve the straightening accuracy.
It effectively reduces the accompanying bending of the bending section on the joint part and improves the linear accuracy of the alloy rod after straightening.
Smart Images
Figure CN223128997U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of alloy bar straightening, and particularly relates to a straightening device for tantalum-niobium alloy bars. Background Art
[0002] Alloy bars are rod-shaped metal materials made by processes such as mixing, smelting, casting, and rolling from two or more metal or non-metal elements (for example, tantalum-niobium alloy bars are alloy materials composed of two metal elements, tantalum and niobium, and also include nickel-based alloy bars, iron-based alloy bars, cobalt-based alloy bars, etc.). They usually have more excellent physical, chemical, and mechanical properties than single metals, such as high strength, high toughness, good corrosion resistance, wear resistance, high temperature resistance, etc., and are widely used in many fields. For example, they are used to manufacture engine blades, turbine disks, bearings, etc. of aircraft and spacecraft; they are used to manufacture key components in oil and gas exploration and processing equipment, such as drill pipes, valves, pipelines, etc.
[0003] Currently, the production process of alloy bars usually includes smelting, casting, rolling, heat treatment, etc. After mixing and smelting various raw materials to form an ingot, the ingot is rolled into an alloy bar through multiple rolling processes, and finally, through heating, heat preservation, and cooling treatments, the internal tissue structure of the material is changed to achieve the required mechanical and physical properties. Currently, during the rolling process, due to the influence of rolling mill parameters, it is inevitable that there are straightness errors in the alloy bars during the rolling process, that is, the bars are bent axially. As shown in the attached drawings of the specification Figure 1 When the bent alloy bars are used as drill pipes in the later stage, it causes rotational yaw. Therefore, after the alloy bars are processed and formed, it is necessary to inspect their straightness accuracy and straighten the bent bars.
[0004] Since alloy bars are made of metal and have a certain bending strength, currently, a hydraulic press as shown in the attached drawings of the specification Figure 2 is usually used for straightening operations. It can quickly drive the bent section of the bar to deform and gradually tend to a straight state. As shown in Figure 3 When a straightening external force is applied to the bent section, since the bar is an integral structure, the two sides connected to the bent section are also affected by the hydraulic pressure and bend along with it. As shown in the lower attached drawings Figure 3 As a result, due to the influence of this accompanying bend, it is difficult for the alloy bars to be smoothly corrected to a straight state, and there is always a part affected by the straightening. Summary of the Invention
[0005] Aiming at the above problems, this application aims to provide a straightening device for tantalum-niobium alloy bars, which straightens each bent section of the alloy bars specifically, thereby reducing the influence of accompanying bend on the connected parts during the straightening of the bent section and improving the straightness accuracy of the alloy bars after straightening.
[0006] To achieve the above object, the technical solution adopted by the present application is as follows: A straightening device for tantalum-niobium alloy bars, characterized in that: the straightening device includes a straightening body for placing the alloy bars, a straightening mechanism provided on the straightening body and abutted against the bent section of the alloy bars and deforming the bent section by an external force, and a limiting body for restricting the alloy bars from rotating under force is further provided in the straightening body.
[0007] Preferably, the straightening body is a groove structure with a straightening groove for placing the alloy bars. The straightening mechanism is a straightening screw rod adjustably penetrated through the side wall of the straightening body, and an adjusting slot for horizontally sliding the straightening screw rod is opened on the side wall of the straightening body.
[0008] Preferably, an arc-shaped straightening plate that fits on the circumferential surface of the alloy bar is rotatably provided at the end of each straightening screw rod.
[0009] Preferably, the limiting body is a limiting plate slidably placed in the straightening groove and abutted against the alloy bar, and the length of the limiting plate is less than the axial length of the shortest bent section of the alloy bar.
[0010] The beneficial effect of the present application is that when the straightening device straightens the bent bar, it is placed on the straightening body. The straightening mechanism abuts against the bent section of the bar to be straightened, that is, locates the length of the bent section to be straightened, and applies an external force to the bent section through the straightening mechanism, so as to reduce the accompanying bending influence on the connected part when straightening the bent section and improve the straightness accuracy of the alloy bar after straightening. Description of the Drawings
[0011] Figure 1 It is a diagram of the bending of the alloy bar after rolling.
[0012] Figure 2 It is a diagram of the current hydraulic straightening by a hydraulic press.
[0013] Figure 3 For Figure 2 It is a diagram of the deformation effect of the bent section of the alloy bar during hydraulic straightening.
[0014] Figure 4 It is a top view structural diagram of the straightening device of the present application as a whole.
[0015] Figure 5 It is a side view structural diagram of the straightening device of the present application.
[0016] Figure 6 It is a diagram of the alloy bar of the present application clamped in the straightening body.
[0017] Figure 7 For the present application Figure 6Diagram of the force straightening of the bent section of an alloy bar
[0018] Figure 8 This application is for Figure 6 Diagram of further clamping and limiting the bent section of the alloy bar
[0019] Figure 9 Diagram of the comparison of the vertical height after the bent section of the alloy bar of this application is circumferentially deflected under extrusion pressure
[0020] Figure 10 Diagram of setting a limiting plate that fits flat against the bent section in this application
[0021] In the figure: 5 - Alloy bar Specific implementation manner
[0022] In order to enable ordinary technicians in the art to better understand the technical solution of this application, the technical solution of this application will be further described below in conjunction with the accompanying drawings and embodiments
[0023] Referring to Figures 4 to 10 A straightening device for tantalum-niobium alloy bars shown in the figure. The straightening device includes a straightening body 1 for placing the alloy bar, and a straightening mechanism is provided on the straightening body 1 that abuts against the bent section of the alloy bar and deforms the bent section by an external force. When straightening the bent bar, place it on the straightening body 1, and make the straightening mechanism abut against the bent section of the bar to be straightened, that is, position the length of the bent section to be straightened, and apply an external force to the bent section through the straightening mechanism, so as to reduce the accompanying bending influence on the connected part when straightening the bent section and improve the straightness accuracy of the alloy bar after straightening
[0024] As Figure 9 shown, when applying a straightening external force to the bent section of the bar, since the bent section of the bar is in a state of skewing with respect to the applied correction force, it will (extrude) cause the circumferential deflection of the bar, affecting the normal progress of the straightening operation. Therefore, to solve this problem, as Figure 10 shown, a limiting body for restricting the force-driven rotation of the alloy bar is also provided inside the straightening body 1. This limiting body can make the bent section of the bar face the external force applied by the straightening mechanism, thereby avoiding the circumferential deflection of the bar after being stressed, and enabling the smooth straightening of the bar
[0025] Specifically, as Figures 4 - 5 shown, the straightening body 1 is a groove structure with a straightening groove 1a for placing the alloy bar. When straightening the bent bar, place it in the straightening groove 1a, as Figure 6 shown. And after the bar is placed, to facilitate applying a straightening external force to the bent section, as Figure 4As shown, the straightening mechanism is a straightening screw rod 2 adjustably inserted through the side wall of the straightening body 1, and an adjusting slot hole (not shown in the figure) for horizontally sliding the straightening screw rod 2 is provided on the side wall of the straightening body 1. By sliding the straightening screw rod 2 in the adjusting slot hole, the straightening screw rods 2 on the same side ( Figure 6 the lower side in the middle and lower part) respectively abut against both ends of the bent section to be straightened, while the straightening screw rods 2 on the upper side abut against the center of the bent section. Then, rotate the adjusting screw rod 2 (there are adjusting nuts inside and outside the side wall of the straightening groove 1a). As Figure 7 shown, targeted external force straightening of the bent section can be achieved.
[0026] Furthermore, to further avoid the problem that the connecting parts on both sides of the bent section bend along with the bending during the straightening process. As Figure 8 shown, straightening screw rods 2 can be symmetrically arranged on the upper and lower sides at both ends of the bent section to further clamp and limit the bent section, thereby further avoiding the problem that the part connected to the bent section bends along with the bending.
[0027] Since the surface of the alloy bar is an arc circumferential surface, when applying the straightening external force, it is easy to cause the extrusion deviation between the bar and the straightening screw rod 2, thus unable to stably apply the straightening force. Therefore, as Figures 5 - 6 shown, an arc-shaped straightening plate 3 that fits on the circumferential surface of the alloy bar is rotatably arranged at the end of each straightening screw rod 2, which forms a coating with a certain arc length on the circumferential surface of the bent section. Thus, when applying the straightening external force, the problem of extrusion deviation of the bar can be effectively avoided, and the straightening operation can proceed smoothly.
[0028] To solve the problem that the bent section of the bar deflects circumferentially under the straightening external force. As Figure 10 shown, the limiting body is a limiting plate 4 slidably placed in the straightening groove 1a and abutting against the alloy bar. During operation, first place the limiting plate 4 in the straightening groove 1a, then place the bent section of the bar flat on this limiting plate 4, so that the bent section to be straightened is horizontally aligned with the arc-shaped straightening plate 3 (as Figure 10 shown, a single bent section bends in a single direction. Therefore, after being flat on the limiting plate 4, both its bending convex side and bending concave side are horizontally aligned with the arc-shaped straightening plates 3 on both sides). Then, rotate the straightening screw rods 2 on both sides and abut them against the bent section, and at the same time, make the bent section gradually return to a straight state under the deformation external force.
[0029] As Figure 9 shown in the comparison, the vertical height of the bent section after circumferential deflection increases. Therefore, after the limiting plate 4 is flat against the bent section, under the straightening external force of the straightening screw rod 2, the contact between the limiting plate 4 and the bent section can limit the circumferential deflection effect of the bent section, thereby ensuring that the straightening screw rod 2 applies the straightening force directly to the bent section.
[0030] Preferably, the length of the limiting plate 4 is less than the axial length of the shortest bent section of the alloy bar. This is because if there are many bent sections in the alloy titanium bar, as Figure 1 shown, and there is a circumferential deviation in the bending direction of each bent section. Therefore, when a single bent section is placed horizontally on the limiting plate 4, if the limiting plate 4 contacts adjacent bent sections simultaneously, it will affect the horizontal alignment state of the current bent section. Therefore, the length of the limiting plate 4 is set to be less than the axial length of the shortest bent section of the alloy bar, that is, the limiting plate 4 will not contact two adjacent bent sections simultaneously, thus avoiding the influence of non-flat placement.
[0031] The principle of this application is as follows: When straightening a bent bar, first place the limiting plate 4 in the straightening groove 1a, and then place the bent section of the bar flat on the limiting plate 4, so that the bent section to be straightened is horizontally aligned with the arc-shaped straightening plate 3. By sliding the straightening screw 2 in the adjusting slot, the straightening screws 2 on the same side are respectively abutted against both ends of the bent section to be straightened, and the upper straightening screw 2 is abutted against the center of the bent section. Then rotate the adjusting screw 2 so that the bent section gradually returns to a straight state under the action of the deformation external force. After the current bent section is straightened, slide the adjusting screw 2 and move the limiting plate 4 to be flatly abutted against the next bent section to be straightened, and perform targeted straightening operations on multiple bent sections in the same way as above.
[0032] The above shows and describes the basic principle, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed.
Claims
1. A straightening device for tantalum-niobium alloy bars, characterized in that: The straightening device includes a straightening body (1) for placing an alloy bar, a straightening mechanism provided on the straightening body (1) and abutted against the bent section of the alloy bar and deforming the bent section by an external force, and a limiting body for restricting the alloy bar from rotating under force is further provided in the straightening body (1).
2. The straightening device according to claim 1, wherein: The straightening body (1) has a groove body structure and has a straightening groove (1a) for placing an alloy bar; the straightening mechanism is a straightening screw rod (2) adjustably penetrating through the side wall of the straightening body (1), and an adjusting elongated hole for horizontally sliding the straightening screw rod (2) is formed in the side wall of the straightening body (1).
3. The straightening device according to claim 2, characterized in that: An arc-shaped straightening plate (3) that fits on the circumferential surface of the alloy bar is rotatably provided at the end of each straightening screw rod (2).
4. The straightening device according to claim 3, characterized in that: The limiting body is a limiting plate (4) slidably placed in the straightening groove (1a) and abutted against the alloy bar, and the length of the limiting plate (4) is less than the axial length of the shortest bent section of the alloy bar.