CN112808958A - Method for quickly segmenting titanium and titanium alloy in continuous casting high-temperature state - Google Patents
Method for quickly segmenting titanium and titanium alloy in continuous casting high-temperature state Download PDFInfo
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- CN112808958A CN112808958A CN202011563577.5A CN202011563577A CN112808958A CN 112808958 A CN112808958 A CN 112808958A CN 202011563577 A CN202011563577 A CN 202011563577A CN 112808958 A CN112808958 A CN 112808958A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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Abstract
The invention discloses a method for quickly segmenting titanium and titanium alloy in a continuous casting high-temperature state, which comprises the following steps of: feeding the raw materials into a cooling bed furnace, and heating to form molten metal; the molten metal flows into the crystallizer to form a pipe bar, after the molten metal is combined and solidified with a dummy bar at the bottom of the crystallizer, the dummy bar moves downwards under the traction of a traction mechanism, and the traction mechanism pulls the pipe bar to do spiral movement downwards; the lower end of the separable plugging part is arranged at the upper end of the pipe rod material, and the cold hearth furnace continues to perform overflow casting on a second section of the pipe rod material; the pipe rod continues to move downwards, when the pipe rod moves to a designated position, the separating mechanism drives the pipe or the rod to move downwards, the upper part and the lower part of the plugging part are separated, and the pipe rod is segmented according to the set length. The method can quickly separate the titanium and the titanium alloy pipe or bar in the continuous casting, improves the product quality, is convenient to operate, has simple equipment, improves the production efficiency and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of titanium and titanium alloy preparation, in particular to a method for quickly segmenting titanium and titanium alloy in a continuous casting high-temperature state.
Background
The novel continuous casting and rolling technology can improve the production efficiency and reduce the cost, thereby becoming a major direction in the titanium alloy research field at present. In the process of continuous casting and rolling, the titanium alloy pipe and the bar need to be quickly segmented at a high temperature, and the currently proposed segmentation method mainly comprises plasma cutting and large-scale saw cutting, but the two technologies have defects of different degrees.
Cutting by a plasma cutting method can generate high temperature at a cutting position, so that a titanium alloy pipe and a bar at the cutting position are melted and solidified at the end surface and the side surface after melting, and the unevenness of the end surface and the surface of the cut titanium alloy pipe and bar can influence the later rolling and other processes, thereby influencing the quality of the titanium alloy pipe and bar; another kind adopts large-scale saw cutting equipment to cut off, and saw cutting equipment is great on the one hand, needs carry out follow-up cutting under protective atmosphere, and equipment realizes comparatively difficultly and the cost is higher, and on the other hand cutting efficiency is low, influences continuous casting production efficiency.
Therefore, the development of a method for rapidly segmenting titanium alloy continuous casting tubes and bars at a high temperature becomes a technical problem to be solved in order to improve the production quality and efficiency of titanium alloy.
Disclosure of Invention
The invention aims to provide a method for quickly segmenting titanium and titanium alloy in a continuous casting high-temperature state, aiming at overcoming the defects of the prior art, the method can quickly separate titanium and titanium alloy pipes or bars in continuous casting, does not cause material defects, improves the product quality, is convenient to operate, has simple equipment, improves the production efficiency and reduces the production cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for rapidly segmenting titanium and titanium alloy in a continuous casting high-temperature state comprises the following steps:
s1: feeding the raw materials into a cooling bed furnace, and heating to form molten metal;
s2: after the molten metal in the cooling bed furnace reaches an overflow condition, the molten metal overflows into the crystallizer through an overflow port to form a first section of pipe or bar, after the molten metal is combined and solidified with a dummy bar at the bottom of the crystallizer, the dummy bar moves downwards under the traction of a traction mechanism, and the traction mechanism moves at a speed v1Drawing the first section of pipe or bar to do spiral motion downwards;
s3: when the first section of pipe or bar moves downwards to reach a set length value, the molten metal in the cooling bed furnace stops overflowing, meanwhile, the separable plugging component is placed in the crystallizer, the lower end of the separable plugging component is placed at the upper end of the first section of pipe or bar, after the placement is finished, the cooling bed furnace continues to perform overflow casting on a second section of pipe or bar, and the upper end of the separable plugging component receives the molten metal which is continuously cast;
s4: the first length of pipe or rod continues at speed v1Moves downwards, when moved to a given position, the separating mechanism at a speed v2Driving the pipe or the bar to move downwards to separate the upper part and the lower part of the plugging partThe pipe or the bar is segmented according to the set length; wherein v is1<v2。
Further, in step S3, a tube separable plugging member or a rod separable plugging member is selected according to the production need.
Further, the pipe separable plugging component comprises a first upper plug and a first lower plug, the first upper plug is provided with a first central hole penetrating from top to bottom, the top end of the first upper plug is provided with a first groove, the first groove receives metal solution for casting a second section of pipe, and the bottom end of the first upper plug is provided with a second groove; the first lower plug is provided with a second center hole penetrating from top to bottom, the second center hole is matched with the first center hole, a core rod for preparing the pipe penetrates through the first center hole and the second center hole from top to bottom, the top end of the first lower plug is provided with a first boss, the first boss is detachably connected with the second groove, and the bottom end of the first lower plug is connected with the first section of pipe.
Further, the separable plugging component of rod comprises a second upper plug and a second lower plug, a third groove is formed in the top end of the second upper plug, the third groove receives metal solution for casting a second section of rod, a fourth groove is formed in the bottom end of the second upper plug, a second boss is arranged on the top end of the second lower plug, the second boss is detachably connected with the fourth groove, and the bottom end of the second lower plug is connected with the first section of rod.
Furthermore, an internal thread is arranged in the second groove, an external thread is arranged on the first boss, and the first boss and the second groove are screwed through the internal thread and the external thread.
Furthermore, an internal thread is arranged in the fourth groove, an external thread is arranged on the second boss, and the second boss and the fourth groove are screwed through the internal thread and the external thread.
Further, in step S2, the drawing mechanism is a plurality of sets of rotating rollers distributed along the left and right sides of the pipe or rod, each set includes two rotating rollers at the left and right sides, an angle of 5-15 ° is formed between the two rotating rollers, the two rotating rollers rotate in opposite directions, and the pipe or rod is clamped between the two rotating rollers.
Further, in step S4, the separating mechanism includes a clamping and positioning device, a transmission device, a first support and a second support, the clamping and positioning device clamps and positions the pipe or the bar through a clamp, the clamp is matched with the pipe or the bar in size and is driven by a hydraulic cylinder, the first support is provided with a first guide rail slider, the clamp moves left and right along the first support through the first guide rail slider, the first support is connected with the transmission device, the first support moves up and down along with the transmission device, and the transmission device is driven by a servo motor and is connected with the production equipment through a mounting seat; one end of the second support is provided with a second guide rail sliding block, the clamping and positioning device longitudinally moves up and down along the second support through the second guide rail sliding block, and the other end of the second support is connected with production equipment.
Further, after the pipe or the bar is segmented according to the set length, the clamp is loosened, and the segmented pipe or bar enters a turnover mechanism to be turned over for 90 degrees; and then the pipe or the bar after cutting is conveyed to a rolling device for continuous rolling.
Further, in step S2, when preparing the tube, the mandrel is moved downward into the mold before the molten metal overflows.
Compared with the prior art, the invention has the beneficial effects that:
the invention adds a separable plugging part in the process of metal liquid crystallization molding, and leads a molded pipe or bar to leave a crystallizer through a traction mechanism at a speed v1The pipe or the bar is clamped by a clamp of a separating mechanism after moving to a designated position, so that the clamped pipe or the bar is kept static, at the moment, the upper material of the pipe or the bar still performs spiral motion, so that the upper plug and the lower plug which are screwed through threads are unscrewed, and meanwhile, the whole clamping and positioning device is driven by a ball screw and is larger than v1Is moved downwards so as to separate the pipes or the bars, thereby realizing continuous castingFast segmenting at high temperature; by the segmentation method, the pipe or the bar does not need to be cut by plasma, so that the phenomenon that the surface of the material is uneven in the cutting process by the plasma, the subsequent process is influenced, and the product quality of the material is improved; the whole process is quick and effective, the operation is convenient, and the production efficiency is improved; the equipment is simple, and separable plugging components can be recycled, so that the production cost is reduced.
Drawings
FIG. 1 is a process diagram of the method of the present invention for rapid staging of titanium and titanium alloy in a high temperature state of continuous casting.
Fig. 2 is a graph of the force analysis of the movement of the tube or rod according to the invention under the traction of the traction means.
Fig. 3 is a force diagram of the rotational movement of the tube or rod of the present invention.
Fig. 4a is a structural schematic diagram of the separable plugging component of the pipe material.
Figure 4b is a schematic view of the structure of the first upper plug of the present invention.
Figure 4c is a schematic view of the first lower plug of the present invention.
Fig. 5a is a schematic structural view of the detachable bar blocking member of the present invention.
Fig. 5b is a schematic structural view of a second upper plug of the present invention.
Figure 5c is a schematic structural view of a second lower plug of the present invention.
Fig. 6 is a schematic view of the structure of the separating mechanism of the present invention.
Description of reference numerals: 1. a cold hearth furnace; 2. a plasma gun; 3. a first vacuum chamber; 4. a crystallizer; 5. a pipe or a bar; 6. a second vacuum chamber; 7. a core rod; 8. a feeding mechanism; 9. a turnover mechanism; 10. a third vacuum chamber; 11. a conveying mechanism; 12. a cutting mechanism; 13. a rolling device;
100. a traction mechanism; 110. a left rotating roller; 120. a right rotating roller;
200. the pipe can be separated and plugged; 210. first upper plugging; 211. a first central aperture; 212. a first groove; 213. a second groove; 220. first lower plugging; 221. a second central aperture; 222. a first boss;
300. the rod can separate the plugging part; 310. second upper plugging; 311. a third groove; 312. a fourth groove; 320. second lower plugging; 321. a second boss;
400. a separating mechanism; 410. clamping and positioning the device; 411. a clamp; 412. a hydraulic cylinder; 420. a transmission device; 421. a servo motor; 422. a mounting seat; 430. a first bracket; 431. a first rail block; 440. a second bracket; 441. and a second guide rail slide block.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways.
According to the method for quickly segmenting the titanium and the titanium alloy in the continuous casting high-temperature state, the pipe or the bar is quickly separated in the continuous casting state by combining the separable plugging part, the traction mechanism and the separation mechanism.
As an exemplary implementation of the present invention, with reference to fig. 1 to 6, the specific implementation process includes:
s1: the raw material is fed into a cold hearth furnace 1 and heated by a plasma torch 2 to form a molten metal, and the entire process is performed in a first vacuum chamber 3.
S2: after the molten metal in the cooling bed furnace reaches an overflow condition, the molten metal overflows into the crystallizer 4 through an overflow port to form a first section of pipe or bar 5, after the molten metal is combined and solidified with a dummy bar at the bottom of the crystallizer, the dummy bar moves downwards under the traction of a traction mechanism 100, and the traction mechanism moves at a speed v1Drawing the first section of pipe or rod 5 downwards to make a spiral motion, and the process is carried out in a second vacuum chamber 6;when preparing the pipe, before the molten metal overflows, the core rod 7 needs to be moved downwards into the crystallizer
The traction mechanism 100 is preferably a plurality of groups of rotating rollers distributed along the left and right of the pipe or rod, each group comprises a left rotating roller 110 and a right rotating roller 120, an angle of 5-15 degrees is formed between the left rotating roller 110 and the right rotating roller 120, the two rotating rollers rotate in opposite directions, and the pipe or rod is clamped between the two rotating rollers.
The tube or the bar is subjected to two acting forces F1 and F2, which are exerted by two rotating rollers, wherein the component force of the two acting forces in the X-axis direction is F1X and F2X, and the component force in the Y-axis direction is F1Y and F2Y, as shown in FIG. 2; the tube or the bar moves downwards under the action of two downward acting forces F1y and F2y and rotates under the action of two acting forces F1x and F2x, as shown in figure 3, and the two movements are combined to make the whole continuous casting tube or bar move downwards in a spiral manner.
S3: when the first section of pipe or rod 5 moves downwards to reach a set length value, for example, the length is set to be 1m, the molten metal in the cooling hearth stops overflowing, meanwhile, the feeding mechanism 8 performs corresponding actions to place the stored separable plugging components in the crystallizer, the lower ends of the separable plugging components are placed at the upper ends of the first section of pipe or rod, after the placement is completed, the cooling hearth continues to perform overflow casting on a second section of pipe or rod, the upper ends of the separable plugging components receive the molten metal which continues to be cast, and the upper ends of the first section of pipe or rod and the lower ends of the separable plugging components, as well as the lower ends of the second section of pipe or rod and the upper ends of the separable plugging components, are connected into a whole along with the solidification of the molten metal.
Wherein, according to the preparation requirement, the pipe separable plugging component 200 or the rod separable plugging component 300 is selected.
As shown in fig. 4, the separable pipe plugging component 200 includes a first upper plug 210 and a first lower plug 220, the separable pipe plugging component is preferably cylindrical, the first upper plug 210 is provided with a first central hole 211 penetrating from top to bottom, the top end of the first upper plug is provided with a first groove 212, the first groove is preferably a trapezoidal groove with a wide top and a narrow bottom, the first groove is used for receiving a metal solution for casting a second section of pipe, the contact area between the first groove on the upper portion and the titanium alloy solution is enlarged, the combination between the titanium alloy solution and the first upper plug is facilitated, the bottom end of the first upper plug is provided with a second groove 213, and an internal thread is arranged in the second groove; the first lower plug is provided with a second center hole 221 penetrating through the second center hole from top to bottom, the second center hole is matched with the first center hole, a core rod for preparing the pipe penetrates through the first center hole 211 and the second center hole 221 from top to bottom, the top end of the first lower plug is provided with a first boss 222, the first boss is provided with an external thread, the first boss 222 is screwed with the second groove 213 through the internal thread and the external thread, and the bottom end of the first lower plug is connected with the first section of pipe.
As shown in fig. 5, the rod separable plugging member 300 includes a second upper plug 310 and a second lower plug 320, the rod separable plugging member 300 is preferably cylindrical, a third groove 311 is formed at a top end of the second upper plug, the third groove is preferably a trapezoidal groove with a wide upper end and a narrow lower end, the third groove is used for receiving a metal solution for casting a second section of rod, a contact area with the titanium alloy solution is enlarged through the third groove at the upper portion, and is more favorable for combining the titanium alloy solution with the second upper plug, a fourth groove 312 is formed at a bottom end of the second upper plug, an internal thread is formed in the fourth groove, a second boss 321 is formed at a top end of the second lower plug, an external thread is formed on the second boss 321, the fourth groove 312 of the second boss 321 is screwed with the external thread through the internal thread, and a bottom end of the second lower plug is connected with the rod.
S4: the first length of pipe or rod continues at speed v1Moves downward and when moved to a specified position, the separating mechanism 400 moves at a speed v2Driving the pipe or the bar to move downwards to separate the upper part and the lower part of the plugging part, and completing the segmentation of the pipe or the bar according to the set length; wherein v is1<v2。
As shown in fig. 6, the separating mechanism 400 preferably includes a clamping and positioning device 410, a transmission device 420, a first support 430 and a second support 440, the clamping and positioning device 410 clamps and positions the pipe or the bar through a clamp 411, the clamp 411 is matched with the pipe or the bar in size and is driven by a hydraulic cylinder 412, the first support 430 is provided with a first guide rail slider 431, the clamp 411 moves left and right along the transverse direction of the first support through the first guide rail slider 431, the first support 430 is connected with the transmission device 420, the first support 430 moves up and down along with the transmission device 420, the transmission device is preferably a ball screw, the transmission device is driven by a servo motor 421 and is connected with the production equipment through a mounting seat 422; one end of the second bracket 440 is provided with a second guide rail sliding block 441, the clamping and positioning device 410 vertically moves up and down along the second bracket through the second guide rail sliding block 441, and the other end of the second bracket is connected with production equipment.
When the titanium alloy pipe or rod moves downwards to a designated position, the servo motor 421 drives the transmission device 420 to move downwards at the same speed v as the titanium alloy pipe or rod moves downwards1Moving downwards, the clamping and positioning device 410 is driven by the transmission device 420 to move at the same speed v1The clamping and positioning device 410 moves downwards, meanwhile, the clamp 411 in the clamping and positioning device 410 moves towards the center under the driving of the hydraulic cylinder 412, the clamping and positioning of the titanium alloy pipe or bar are completed, and after the clamping and positioning are completed, the servo motor 421 drives the transmission device 420 to drive the clamping and positioning device 410 to move downwards at a speed v greater than the speed v of the titanium alloy pipe or bar2The downward movement makes the first upper plug 210 and the first lower plug 220, and the second upper plug 310 and the second lower plug 320 perform relative rotation movement, and further the two parts connected by the screw thread are separated to complete the segmentation.
After the pipe or the bar is segmented according to the set length, the clamp is loosened, the segmented pipe or bar enters the turnover mechanism 9 to be turned over for 90 degrees, and the process is carried out in the third vacuum chamber 10; and then the pipe or the bar is moved to a cutting mechanism 12 through a conveying mechanism 11, the blocking part is cut off through the cutting mechanism, and the cut pipe or the bar is conveyed to a rolling device 13 for continuous rolling.
For better understanding, the present invention is further described below with reference to several specific examples, but the process is not limited thereto and the present disclosure is not limited thereto.
[ example 1 ]
The embodiment provides a method for rapidly segmenting a TC4 titanium alloy pipe with the specification of phi 100 × 25 × 1000mm, which comprises the following specific steps:
s1: fully and uniformly mixing the titanium sponge and the Al-V alloy according to the ratio of 9: 1, continuously adding the mixture into a cooling bed furnace through a feeding mechanism, vacuumizing to 0.5Pa, and flushing protective gas argon; and starting a plasma gun to continuously heat and melt to form the titanium alloy solution.
S2: the top core rod moves downwards into the crystallizer at the speed of 100mm/s and stops when reaching the bottom of the crystallizer. And (3) overflowing the melted titanium alloy solution into a crystallizer through an overflow port of a cold hearth furnace, and after the titanium alloy solution is combined and solidified with a dummy bar at the bottom of the crystallizer, moving the dummy bar downwards under the traction of a traction mechanism, wherein the traction mechanism pulls a titanium alloy pipe to spirally move downwards at the speed of 30 mm/min.
S3: when the length of the titanium alloy pipe reaches 1m, a detection sensor arranged gives a corresponding signal, the cooling bed furnace is controlled to rotate anticlockwise by an angle of 3 degrees to stop the overflow of the titanium alloy solution, the top core rod moves out of the crystallizer at the speed of 30mm/s, a feeding mechanism carries out corresponding action to place the stored pipe separable plugging part into the crystallizer and place the pipe separable plugging part above the titanium alloy solution, at the moment, the core rod is rapidly inserted into the bottom of the crystallizer at the speed of 100mm/s, and the cooling bed furnace returns to the original position to continue casting. Along with the solidification of the titanium alloy solution, the lower part of the pipe separable plugging part is connected with the titanium alloy pipe into a whole.
And repeating the steps, placing the pipe separable plugging component into the crystallizer through the feeding mechanism at intervals of 1m, and segmenting the titanium alloy continuous casting pipe according to the length of 1 m.
S4: when the sensor detects that the segmented titanium alloy continuous casting pipe moves downwards to a designated position, the separating mechanisms symmetrically arranged on two sides move downwards together with the titanium alloy pipe at the speed of 30mm/min, so that the separating mechanisms and the titanium alloy continuous casting pipe are relatively static. And simultaneously, a clamping and positioning component in the separating mechanism clamps and fixes the titanium alloy pipe, and the separating mechanism integrally moves downwards at the speed of 60mm/min after the fixing is finished. Therefore, the first lower plug connected with the lower titanium alloy bar and the first upper plug connected with the upper titanium alloy bar can do relative rotation movement, so that the upper plug and the lower plug which are connected by the threads are separated, and the whole process is completed within 10 s.
After the segmentation is completed, a clamping and positioning part in the separating mechanism is loosened, and the titanium alloy pipe enters the turnover mechanism under the action of gravity to be turned over for 90 degrees; the titanium alloy pipe after being turned over enters a conveying mechanism and is conveyed forwards at the speed of 5m/min under the action of the conveying mechanism; conveying the titanium alloy pipe to a cutting station by a conveying mechanism, cutting off a first upper plug and a first lower plug at two ends of the titanium alloy pipe by the cutting mechanism, recovering cut-off plug parts, and reprocessing for recycling; and the conveying mechanism conveys the cut titanium alloy pipe to rolling equipment for rolling.
[ example 2 ]
The embodiment provides a method for rapidly segmenting a TC4 titanium alloy bar with a phi 100 × 1000mm specification, which comprises the following specific steps:
s1: fully and uniformly mixing the titanium sponge and the Al-V alloy according to the ratio of 9: 1, continuously adding the mixture into a cooling bed furnace through a feeding mechanism, vacuumizing to 0.5Pa, and flushing protective gas argon; and starting a plasma gun to continuously heat and melt to form the titanium alloy solution.
S2: after the molten titanium alloy solution reaches an overflow condition, the molten titanium alloy solution overflows into the crystallizer through an overflow port of the cold hearth furnace, after the titanium alloy solution is combined and solidified with a dummy bar at the bottom of the crystallizer, the dummy bar moves downwards under the traction of a traction mechanism, and the traction mechanism pulls a titanium alloy bar to move downwards in a spiral mode at the speed of 30 mm/min.
S3: when the length of the titanium alloy bar reaches 1m, the arranged detection sensor gives a corresponding signal, the cooling bed furnace is controlled to rotate upwards by 3 degrees anticlockwise to stop the overflow of the titanium alloy solution, the feeding mechanism carries out corresponding action to place the stored bar separable plugging component into the crystallizer above the titanium alloy solution, and after the placement is finished, the cooling bed furnace returns to the original position to continue casting. The lower part of the bar separable plugging component is connected with the titanium alloy bar into a whole along with the solidification of the titanium alloy solution.
And repeating the process, placing the separable plugging components into the crystallizer through a feeding mechanism at intervals of 1m, and segmenting the titanium alloy continuous casting bar material according to the length of 1 m.
S4: when the sensor detects that the segmented titanium alloy continuous casting bar moves downwards to a designated position, the separating mechanisms symmetrically arranged on two sides move downwards together with the titanium alloy bar at the speed of 30mm/min, so that the separating mechanisms and the titanium alloy continuous casting bar are relatively static. And simultaneously, a clamping and positioning component in the separating mechanism clamps and fixes the titanium alloy bar, and the whole separating mechanism moves downwards at the speed of 60mm/min after the fixing is finished. Thus, the second upper plug and the second lower plug which are connected through the screw thread do relative rotation movement, so that the upper plug and the lower plug which are connected through the screw thread are separated, and the whole process is completed within 10 s.
After the segmentation is finished, loosening a clamping and positioning part in the separating mechanism, and enabling the separated titanium alloy bar to enter a turnover mechanism for 90-degree turnover; the titanium alloy bar after being turned over enters a conveying mechanism and is conveyed forwards at the speed of 5m/min under the action of the conveying mechanism; the conveying mechanism conveys the titanium alloy bar to a cutting station, and the cutting mechanism cuts off the upper plugs and the lower plugs at the two ends of the titanium alloy bar. Recovering the cut plugging component, and reprocessing and recycling; and the conveying mechanism conveys the cut titanium alloy bar to rolling equipment for rolling.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A method for rapidly segmenting titanium and titanium alloy in a continuous casting high-temperature state is characterized by comprising the following steps:
s1: feeding the raw materials into a cooling bed furnace, and heating to form molten metal;
s2: after the molten metal in the cooling bed furnace reaches the overflow condition, the molten metal overflows into the crystallizer through the overflow port to form a first section of pipe or bar, and the molten metal is ready to be goldAfter the molten metal is combined and solidified with a dummy bar at the bottom of a crystallizer, the dummy bar moves downwards under the traction of a traction mechanism, and the traction mechanism moves at a speed v1Drawing the first section of pipe or bar to do spiral motion downwards;
s3: when the first section of pipe or bar moves downwards to reach a set length value, the molten metal in the cooling bed furnace stops overflowing, meanwhile, the separable plugging component is placed in the crystallizer, the lower end of the separable plugging component is placed at the upper end of the first section of pipe or bar, after the placement is finished, the cooling bed furnace continues to perform overflow casting on a second section of pipe or bar, and the upper end of the separable plugging component receives the molten metal which is continuously cast;
s4: the first length of pipe or rod continues at speed v1Moves downwards, when moved to a given position, the separating mechanism at a speed v2Driving the pipe or the bar to move downwards to separate the upper part and the lower part of the plugging part, and completing the segmentation of the pipe or the bar according to the set length; wherein v is1<v2。
2. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 1, characterized in that: in step S3, according to the preparation requirement, a tube separable plugging member or a rod separable plugging member is selected.
3. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 2, characterized in that: the pipe separable plugging component comprises a first upper plug and a first lower plug, the first upper plug is provided with a first central hole penetrating from top to bottom, the top end of the first upper plug is provided with a first groove, the first groove receives metal solution for casting a second section of pipe, and the bottom end of the first upper plug is provided with a second groove; the first lower plug is provided with a second center hole penetrating from top to bottom, the second center hole is matched with the first center hole, a core rod for preparing the pipe penetrates through the first center hole and the second center hole from top to bottom, the top end of the first lower plug is provided with a first boss, the first boss is detachably connected with the second groove, and the bottom end of the first lower plug is connected with the first section of pipe.
4. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 2, characterized in that: the separable plugging component of rod includes shutoff and shutoff under the second on the second, the top of shutoff is equipped with the third recess on the second, the metal solution of casting second section rod is accepted to the third recess, and the bottom of shutoff is equipped with the fourth recess on the second, and the top of shutoff is equipped with the second boss under the second, second boss and fourth recess separable connection, the bottom and the first section rod of shutoff are connected under the second.
5. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 3, characterized in that: an internal thread is arranged in the second groove, an external thread is arranged on the first boss, and the first boss and the second groove are screwed through the internal thread and the external thread.
6. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 4, characterized in that: an internal thread is arranged in the fourth groove, an external thread is arranged on the second boss, and the second boss and the fourth groove are screwed through the internal thread and the external thread.
7. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 1, characterized in that: in step S2, the traction mechanism is a plurality of sets of rotating rollers distributed along the left and right sides of the pipe or rod, each set includes a left rotating roller and a right rotating roller, the two rotating rollers form an angle of 5-15 degrees, the two rotating rollers rotate in opposite directions, and the pipe or rod is clamped between the two rotating rollers.
8. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 1, characterized in that: in the step S4, the separating mechanism comprises a clamping and positioning device, a transmission device, a first support and a second support, the clamping and positioning device clamps and positions the pipe or the bar through a clamp, the clamp is matched with the pipe or the bar in size and is driven by a hydraulic cylinder, a first guide rail sliding block is arranged on the first support, the clamp transversely moves left and right along the first support through the first guide rail sliding block, the first support is connected with the transmission device, the first support moves up and down along with the transmission device, and the transmission device is driven by a servo motor and is connected with production equipment through a mounting seat; one end of the second support is provided with a second guide rail sliding block, the clamping and positioning device longitudinally moves up and down along the second support through the second guide rail sliding block, and the other end of the second support is connected with production equipment.
9. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 8, characterized in that: after the pipe or the bar is segmented according to the set length, the clamp is loosened, and the segmented pipe or bar enters a turnover mechanism to be turned over for 90 degrees; and then the pipe or the bar after cutting is conveyed to a rolling device for continuous rolling.
10. The method for rapid segmentation in titanium and titanium alloy continuous casting at high temperature state according to claim 1, characterized in that: in step S2, when preparing the tube, the mandrel is moved downward into the mold before the molten metal overflows.
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