CN112935509B - Large-size titanium alloy bar processing device - Google Patents
Large-size titanium alloy bar processing device Download PDFInfo
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- CN112935509B CN112935509B CN202110132565.5A CN202110132565A CN112935509B CN 112935509 B CN112935509 B CN 112935509B CN 202110132565 A CN202110132565 A CN 202110132565A CN 112935509 B CN112935509 B CN 112935509B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
Abstract
The invention discloses a large-size titanium alloy bar processing device. The device is characterized in that under the condition that the temperature is lower than the melting point of the titanium alloy, the large end face is preheated, hydrogen is filled into the furnace body after the temperature reaches the preheating temperature, titanium hydride powder is sprayed on the end face to be connected, the surface layer of the end face of the titanium alloy is rapidly melted, then the hydrogen-containing melt is thrown out through centrifugal force to form a semi-solid surface, the interface of the two titanium alloy workpieces to be connected is rapidly connected by applying pressure, and after the interface is completed, hydrogen in the titanium alloy is removed through vacuum treatment, and weld zone tissue refinement is realized. The device can realize the connection of the titanium alloy with the large end face only by using lower energy, and has the advantages of low energy consumption, relatively small heat affected zone and good connection effect.
Description
Technical Field
The invention relates to the technical field of titanium alloy devices, in particular to a large-size titanium alloy rod processing device.
Background
The titanium alloy has the characteristics of high specific strength, corrosion resistance, damping resistance, good biocompatibility and the like, is widely applied to the fields of aviation, aerospace, chemical engineering, biology and the like, and becomes an indispensable key material in the field of mechanical manufacturing. With the progress of purifying titanium and the reduction of cost, the processing technology of titanium alloy is changing day by day. The welding technology of titanium alloy is an effective method for preparing complex titanium alloy, and at present, the welding is mainly carried out by argon arc welding, submerged arc welding, vacuum electron beam welding, diffusion welding, spot welding, friction stir welding, laser welding, plasma beam welding and the like. However, welding of large end faces requires high energy and the welding method is rare. In the general process of workpiece preparation, hydrogen is used as a harmful element, so that the brittleness of the titanium alloy can be increased, the hydrogen treatment technology expands the field of material preparation and processing, and the technology refines the titanium alloy structure by using hydrogen as a temporary element and improves the weldability of the material.
Disclosure of Invention
The invention aims to solve the technical problem of how to provide a processing device which can realize the connection of a large-end-face titanium alloy only by low energy.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a jumbo size titanium alloy stick processingequipment which characterized in that: comprises a furnace body, wherein one end of the upper side in the furnace body is positioned outside the furnace body, the other end of the upper side in the furnace body is positioned in the furnace body and extends downwards, a first driving device is arranged at one end of the first pressure rod positioned outside the furnace body, the first pressure rod can rotate and move up and down under the driving of the first driving device, a clamping device is formed at the lower side of the first pressure rod, a first parent body to be connected is clamped on the clamping device, a second pressure rod is arranged at the lower side in the furnace body corresponding to the first parent body to be connected, one end of the second pressure rod is positioned outside the furnace body, the other end of the second pressure rod is positioned in the furnace body and extends upwards, a second driving device is arranged at one end of the second pressure rod positioned outside the furnace body, the second pressure rod is driven by the second driving device to rotate and move up and down, and a fixing device is formed at the upper end of the second pressure rod, a second parent body to be connected is fixed on the fixing device; the first parent that waits to be connected with the second is waited to connect the parent and is set up relatively, and is provided with terminal surface heating device between the two, terminal surface heating device's the outside is provided with side heating device, side heating device's internal diameter is greater than wait to connect the external diameter of parent, just side heating device will first parent that waits to be connected and the corresponding tip of second parent that waits to be connected cover, carry the material device and be close to the downside setting of furnace body, just carry the one end of material device to be located outside the furnace body, the other end of carrying the material device is located in the furnace body, through carry the material device to the second is waited to connect the up end of parent and is dropped into the titanium hydride powder.
The further technical scheme is as follows: the clamping device comprises a first pressure plate and clamping plates positioned on two sides of the first pressure plate, and the upper end of the first parent body to be connected is clamped by the first pressure plate and the two clamping plates; the fixing device comprises a second pressure plate and fixing plates positioned on two sides of the second pressure plate, and the lower end of the second mother body to be connected is clamped through the second pressure plate and the fixing plates.
The further technical scheme is as follows: the end face heating device comprises an end face induction coil, the end face heating device is used for heating the end face, opposite to the first parent to be connected and the second parent to be connected, of the first parent to be connected, the end face induction coil is located in the end face coil supporting layer, an end face heating device support is fixed to the outer side of the end face coil supporting layer, and the end face heating device is fixed to the inner portion of the furnace body through the heating device support.
The further technical scheme is as follows: the side heating device is used for heating the end parts corresponding to a first mother body to be connected and a second mother body to be connected and comprises a side induction coil, a side coil supporting layer is formed on the outer side of the side induction coil and is of an annular structure, a channel is formed in the side coil supporting layer and is used for placing the end surface heating device to support, the main body of the end surface heating device is located in the annular structure defined by the side coil supporting layer, one end of a side heating device supporting rod is fixed with the side coil supporting layer, the other end of the side heating device supporting rod is fixed with the inside of the furnace body, and the side heating device is fixed in the furnace body through the side heating device supporting rod.
The further technical scheme is as follows: the side heating device further comprises a thermocouple fixing tube, a thermocouple is arranged in the thermocouple fixing tube, one end of the thermocouple fixing tube is located outside the furnace body, the other end of the thermocouple fixing tube is fixed with the side coil supporting layer, and the thermocouple is used for measuring the temperature of the side heating device.
The further technical scheme is as follows: the furnace body is characterized in that a material carrying groove is formed in the material carrying device, titanium hydride powder is placed in the material carrying groove, a heat insulation sleeve is formed on the inner wall of the furnace body outside the material carrying device, one end, located outside the furnace body, of the material carrying device is connected with a third driving device, and the third driving device can drive the material carrying device to rotate and stretch.
The further technical scheme is as follows: the device further comprises an infrared thermometer, and the infrared thermometer is used for measuring the temperature of the end face of the second to-be-connected parent body.
The further technical scheme is as follows: the device still includes the pressure pipe, the one end of pressure pipe is located in the furnace body, the other end of pressure pipe is located outside the furnace body, and be located and be provided with the manometer on the pressure pipe outside the furnace body.
The further technical scheme is as follows: and an observation window is arranged on the furnace body, and the melting condition of the end face of the second to-be-connected parent body is observed through the observation window.
The further technical scheme is as follows: the furnace body is characterized in that an exhaust pipe is arranged on the upper side of the furnace body, an exhaust valve is arranged on the exhaust pipe, a balance pressure limiting pipe is arranged in the middle of the furnace body, a balance pressure limiting valve is arranged on the balance pressure limiting pipe, an air inlet pipe is arranged on the lower portion of the furnace body, and an air inlet valve is arranged on the air inlet pipe.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the device is characterized in that under the condition that the temperature is lower than the melting point of the titanium alloy, the large end face is preheated, hydrogen is filled into the furnace body after the temperature reaches the preheating temperature, titanium hydride powder is sprayed on the end face to be connected, the surface layer of the end face of the titanium alloy is rapidly melted, then the hydrogen-containing melt is thrown out through centrifugal force to form a semi-solid surface, the interface of the two titanium alloy workpieces is rapidly connected by applying pressure to the two titanium alloy workpieces, and after the interface is completed, hydrogen in the titanium alloy is removed through vacuum treatment, and weld zone tissue refinement is realized. The device can realize the connection of the titanium alloy with the large end face only by using lower energy, and has the advantages of low energy consumption, relatively small heat affected zone and good connection effect.
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic structural diagram of a processing apparatus according to an embodiment of the present invention;
FIG. 2 is a titanium-hydrogen phase diagram at a hydrogen pressure of 10MPa in an example of the invention;
FIG. 3 is a schematic structural diagram of an end surface heating apparatus in a processing apparatus according to an embodiment of the present invention
FIG. 4 is a schematic cross-sectional view of an end-face coil supporting layer in the processing apparatus according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a side heating device in the processing apparatus according to the embodiment of the present invention
FIG. 6 is a schematic cross-sectional view of a side coil support layer in the processing apparatus according to the embodiment of the present invention;
FIG. 7 is a schematic view of the spatial location of an induction heating and connection precursor in an embodiment of the invention;
FIG. 8 is a schematic view of induction heating and heating of a connection precursor in an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of FIG. 8;
FIG. 10 is a schematic view of induction heating and heating of a connection precursor in an embodiment of the invention;
FIG. 11 is a schematic illustration of a high voltage connection between two connection matrices in an embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view of FIG. 11;
wherein: 1: a furnace body; 2: a pressure gauge; 3: a first pressure bar; 4: a first pressure plate; 4-1: a clamping plate; 5: a first parent body to be connected; 6: an exhaust valve; 7: a side heating device; 7-1: a channel; 7-2: a lateral heating device support bar; 7-3: a side induction coil; 7-4: a side coil support layer; 8: a second pressure bar; 9: a second pressure plate; 9-1: a fixing plate; 10: a second mother body to be connected; 11: an end face heating device; 11-1: an end face induction coil; 11-2: an end face coil supporting layer; 11-3: an end face heating device support bar; 12: an intake valve; 13: a balanced pressure limiting valve; 14: an infrared thermometer; 15: a heat-insulating sleeve; 16: a feeding device; 16-1: a material loading groove; 17: a thermocouple fixing tube; 18: an observation window; 19: titanium hydride powder.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the embodiment of the invention discloses a large-size titanium alloy rod processing device, which comprises a furnace body 1, wherein a first pressure rod 3 is arranged at the upper side in the furnace body 1, one end of the first pressure rod is positioned outside the furnace body 1, the other end of the first pressure rod is positioned in the furnace body 1 and extends downwards, a first driving device is arranged at one end of the first pressure rod 3 positioned outside the furnace body 1, and the first pressure rod 3 can rotate and move up and down under the driving of the first driving device; a clamping device is formed on the lower side of the first pressure rod 3, a first parent body 5 to be connected is clamped on the clamping device, a second pressure rod 3 is arranged on the lower side in the furnace body 1 corresponding to the first parent body 5 to be connected, one end of the second pressure rod 3 is positioned outside the furnace body 1, the other end of the second pressure rod 3 is positioned in the furnace body 1 and extends upwards, a second driving device is arranged at one end of a second pressure rod 8 positioned outside the furnace body 1, the second pressure rod 8 can rotate and move up and down under the driving of the second driving device, a fixing device is formed at the upper end of the second pressure rod 8, and a second parent body 10 to be connected is fixed on the fixing device; the specific structure of the first driving device and the second driving device may use the structure in the prior art, and will not be described herein. The first precursor to be connected 5 and the second precursor to be connected 10 are made of titanium alloy.
As shown in fig. 1, the first precursor to be connected 5 and the second precursor to be connected 10 are disposed opposite to each other, an end surface heating device 11 is disposed between the first precursor to be connected 5 and the second precursor to be connected 10, a side surface heating device 7 is disposed outside the end surface heating device 11, an inner diameter of the side surface heating device 7 is larger than outer diameters of the first precursor to be connected and the second precursor to be connected, the end portions of the first precursor to be connected 5 and the second precursor to be connected 10 are covered by the side surface heating device 7, a loading device 16 is disposed near a lower side of the furnace body 1, one end of the loading device is located outside the furnace body 1, the other end of the loading device 16 is located inside the furnace body 1, and titanium hydride powder 19 is loaded onto an upper end surface of the second precursor to be connected 10 through the loading device 16.
Further, as shown in fig. 1, the clamping device comprises a first pressure plate 4 and clamping plates 4-1 positioned at both sides of the first pressure plate 4, and the upper end of the first parent body to be connected 5 is clamped by the first pressure plate 4 and the two clamping plates 4-1; the fixing device comprises a second pressure plate 9 and fixing plates 9-1 positioned on two sides of the second pressure plate 9, and the lower end of the second mother body to be connected 10 is clamped through the second pressure plate 9 and the fixing plates 9-1. It should be noted that the specific structure of the clamping device may be other types, which is not described herein.
Further, as shown in fig. 3 to 4, the end surface heating device 11 includes an end surface induction coil 11-1, the end surface heating device 11 is configured to heat an end surface of the first mother body to be connected 5 opposite to the second mother body to be connected 10, the end surface induction coil 11-1 is located in an end surface coil supporting layer 11-2, an end surface heating device support 11-3 is fixed on an outer side of the end surface coil supporting layer 11-2, and the end surface heating device 11 is fixed inside the furnace body 1 through the heating device support 11-3. The end face coil supporting layer 11-2 is made of an insulating material which does not react with hydrogen at a connection temperature, such as: alumina fibers, quartz fibers, and the like.
Further, as shown in fig. 5 to 6, the side heating device 7 is used for performing heating treatment on the corresponding end portions of the first parent body 5 to be connected and the second parent body 10 to be connected, and includes a side induction coil 7-3, a side coil support layer 7-4 is formed on the outer side of the side induction coil 7-3, the side support layer is of a ring structure, a channel 7-1 is formed on the side coil support layer 7-4, the channel 7-1 is used for placing the end heating device support 11-3, so that the main body of the end heating device 11 is located in the ring structure surrounded by the side coil support layer 7-4, one end of the side heating device support rod 7-2 is fixed to the side coil support layer 7-4, and the other end is fixed to the inner wall of the furnace body 1, the side heating device 7 is fixed in the furnace body 1 by the side heating device support rod 7-2. Further, as shown in fig. 3 to 4, the side heating device 7 further includes a thermocouple fixing tube 17, a thermocouple is disposed in the thermocouple fixing tube 17, one end of the thermocouple fixing tube 17 is located outside the furnace body 1, the other end of the thermocouple fixing tube 17 is fixed to the side coil support layer 7-4, and the thermocouple is used for measuring the temperature of the side heating device 7. The side coil supporting layer 7-4 is made of an insulating material which does not react with hydrogen at the connection temperature, such as: alumina fibers, quartz fibers, and the like.
Further, as shown in fig. 1, a material loading groove 16-1 is formed on the material loading device 16, titanium hydride powder 19 is placed in the material loading groove 16-1, a heat insulation sleeve 15 is formed on the inner wall of the furnace body outside the material loading device 16, one end of the material loading device 16, which is located outside the furnace body, is connected with a third driving device, the third driving device can drive the material loading device 16 to rotate and stretch, the third driving device can use a device in the prior art, and the specific structure of the third driving device is not described herein.
In addition, the device further comprises an infrared thermometer 14, wherein the infrared thermometer 14 is used for measuring the temperature of the end face of the second parent body 10 to be connected, and the temperature of the end face of the second parent body 10 to be connected can be conveniently obtained through the infrared thermometer 14. The device still includes the manometer pipe, the one end of manometer pipe is located in the furnace body, the other end of manometer pipe is located outside the furnace body, and be located the outside manometer of furnace body and be provided with manometer 2 on the manometer, through manometer 2 can obtain the pressure information in the furnace body. An observation window 18 is arranged on the furnace body, and the melting condition of the end face of the second mother body 10 to be connected is observed through the observation window 18. The upper side of furnace body is provided with the blast pipe, be provided with discharge valve 6 on the blast pipe, the middle part of furnace body is provided with balanced pressure-limiting pipe, be provided with balanced pressure-limiting valve 13 on the balanced pressure-limiting pipe, the lower part of furnace body is provided with the intake pipe, be provided with admission valve 12 in the intake pipe. The heat-insulating sleeve 15, the feeding device 16, the side induction coils 7-3 and the end induction coils are made of copper 11-1, the inner parts of the heat-insulating sleeve are water-cooled, the wall thickness of the water-cooled sleeve can bear 20 MPa without deformation, the inner diameter of the heat-insulating sleeve 15 is equal to the outer diameter of the feeding pipe 16, and the error is 0.1-0.5 mm.
Correspondingly, the invention also discloses a large-size titanium alloy rod processing method, which uses a large-size titanium alloy rod processing device and comprises the following steps:
the end face heating device 11 is fitted into the middle of the side face heating device 7, and then the first precursor body 5 to be connected is clamped to a first pressure by the clamping plate 4-1On the plate 4, a second precursor 10 to be joined is fixed on a second pressure plate 9, as shown in fig. 7; the clamped surfaces of the first parent body to be connected 5 and the second parent body to be connected 10 are non-connecting surfaces, the first parent body to be connected 5 and the second parent body to be connected 10 move to the vicinity of the end surface heating device 11 through the movement of the first pressure rod 3 and the second pressure rod 8, and the spacing distance is kept to be 3mm-5 mm; an insulating layer is assembled around the side heating device 7; then the whole furnace body is vacuumized to 10 DEG-3-10-5Pa, heating the first mother body to be connected 5 and the second mother body to be connected 10 by the side heating device 7 and the end surface heating device 11, and heating the joint surface of the first mother body to be connected 5 and the second mother body to be connected 10 to T0 to 1350K, as shown in fig. 8 to 9;
after the temperature is stable and constant, hydrogen is filled into the furnace body to 10MPa through the gas inlet pipe 12, then the end surface heating device 11 and the second parent body to be connected 10 are together descended to the horizontal line at the bottom of the feeding pipe 16, and a titanium-hydrogen phase diagram under the hydrogen pressure of 10MPa is shown in figure 2; and keeping the distance between the end surface heating device 11 and the end surface of the second parent body to be connected 10 to be larger than the diameter of the feeding pipe 16; then, the feeding device 16 is fed onto the connecting end face of the second parent body 10 to be connected, the feeding pipe 16 is rotated and reciprocated, so that the titanium hydride powder 19 in the material loading groove is uniformly sprinkled on the connecting end face of the second parent body 10 to be connected, and simultaneously, the second pressure rod 8 is rotated, so that the titanium hydride powder 19 is uniformly distributed on the connecting end face of the whole second parent body 10 to be connected, as shown in fig. 10; according to the environment of pressure in the atmosphere, after the titanium hydride is heated, partial hydrogen is released and then is melted into a hydrogen-containing melt, or the titanium hydride is directly melted under high pressure to react TiH2→Ti(H)L+H2(ii) a Finally, a melting layer is quickly formed on the connecting end face of the second parent body 10 to be connected, the melting layer erodes the matrix of the second parent body 10 to be connected, and a liquid state region, a pasty region and a solid state distribution region are formed below the end face;
observing and confirming the melting condition of the end face through an observation window until the titanium hydride powder 19 is completely melted, and increasing the atmospheric pressure until the upper limit value of the balanced pressure limiting valve 13 reaches 15MPa in the process; the temperature is fed back by the infrared thermometer 14, so that the temperature of the end face of the second parent body 10 to be connected is ensured to be constant; if the end face of the second parent body 10 to be connected is not melted sufficiently, the power of the end face heating device 11 can be properly increased; then the feeding pipe 16 is far away from the connecting end face of the second parent body 10 to be connected; accelerating the rotation of the second parent body to be connected 10, throwing out the melt which is rich in hydrogen and lacks other components of the matrix, exposing the clean surface at the semi-solid state position, and then stopping the rotation; removing the end face heating device 11, rapidly lifting the second parent body to be connected 10 to make the second parent body to be connected contact with the end face of the first parent body to be connected 5, and applying pressure to 20-100MPa to extrude most of the residual melt and realize interface atomic bonding connection, as shown in figures 11-12; and gradually reducing the atmosphere pressure P0, gradually increasing the crystallization point of the residual melt on the end face because of the reduction of the crystallization point until the residual melt is completely solidified, simultaneously vacuumizing the system, performing vacuum treatment, removing hydrogen elements of the first precursor body to be connected 5, the second precursor body to be connected 10 and the connection interface thereof, and refining the welding area structure by vacuum dehydrogenation.
In summary, the device and the method of the invention utilize the characteristic that hydrogen atoms can reduce the melting point of the titanium alloy under high pressure atmosphere, the end face is coated with the titanium hydride composite powder rapidly under high temperature and high pressure, the titanium hydride is rapidly decomposed to form hydrogen-rich melt and hydrogen under high temperature and high pressure, the hydrogen content of the hydrogen-rich melt is larger than that of the titanium alloy base material, the hydrogen-rich melt can rapidly erode the connecting end face of the titanium alloy base material, and liquid, pasty area (semi-solid state) and solid distribution are formed below the end face. Then throwing the hydrogen-rich melt part out through centrifugal force, finally carrying out pressure connection on the semi-solid area, and then gradually reducing the content of hydrogen to solidify the hydrogen-containing melt on the residual interface, thereby realizing the quick connection of the large end face of the titanium alloy. And then, vacuumizing the system, performing high-temperature vacuum treatment, removing hydrogen elements of the connection matrix and the connection interface of the connection matrix, and refining the weld zone structure through vacuum dehydrogenation.
Claims (6)
1. A jumbo size titanium alloy stick processingequipment which characterized in that: comprises a furnace body (1), a first pressure rod (3) with one end positioned outside the furnace body (1) and the other end positioned outside the furnace body (1) and extending downwards is arranged on the upper side in the furnace body (1), a first driving device is arranged at one end of the first pressure rod (3) positioned outside the furnace body (1), the first pressure rod (3) can rotate and move up and down under the driving of the first driving device, a clamping device is formed at the lower side of the first pressure rod (3), a first parent body to be connected (5) is clamped on the clamping device, a second pressure rod (8) is arranged at the lower side in the furnace body (1) corresponding to the first parent body to be connected (5), one end of the second pressure rod (8) is positioned outside the furnace body (1), the other end is positioned in the furnace body (1) and extends upwards, and a second driving device is arranged at one end of the second pressure rod (8) positioned outside the furnace body (1), the second pressure rod (8) can rotate and move up and down under the driving of the second driving device, a fixing device is formed at the upper end of the second pressure rod (8), and a second parent body (10) to be connected is fixed on the fixing device; the first parent body to be connected (5) and the second parent body to be connected (10) are arranged oppositely, an end face heating device (11) is arranged between the two, a side face heating device (7) is arranged outside the end face heating device (11), the inner diameter of the side heating device (7) is larger than the outer diameters of the first parent body to be connected (5) and the second parent body to be connected (10), the side surface heating device (7) covers the corresponding ends of the first parent body (5) to be connected and the second parent body (10) to be connected, the feeding device (16) is arranged close to the lower side of the furnace body (1), one end of the feeding device is positioned outside the furnace body (1), the other end of the feeding device (16) is positioned in the furnace body (1), feeding titanium hydride powder (19) to the upper end face of the second parent body (10) to be connected through the feeding device (16);
the clamping device comprises a first pressure plate (4) and clamping plates (4-1) positioned on two sides of the first pressure plate (4), and the upper end of the first mother body to be connected (5) is clamped by the first pressure plate (4) and the two clamping plates (4-1); the fixing device comprises a second pressure plate (9) and fixing plates (9-1) positioned on two sides of the second pressure plate (9), and the lower end of the second parent body to be connected (10) is clamped through the second pressure plate (9) and the fixing plates (9-1);
the end face heating device (11) comprises an end face induction coil (11-1), the end face heating device (11) is used for heating the end face of the first mother body to be connected (5) opposite to the second mother body to be connected (10), the end face induction coil (11-1) is located in an end face coil supporting layer (11-2), an end face heating device support (11-3) is fixed to the outer side of the end face coil supporting layer (11-2), and the end face heating device (11) is fixed to the inner portion of the furnace body (1) through the end face heating device support (11-3);
the side heating device (7) is used for heating the corresponding end parts of a first parent body (5) to be connected and a second parent body (10) to be connected and comprises a side induction coil (7-3), a side coil supporting layer (7-4) is formed on the outer side of the side induction coil (7-3), the side coil supporting layer is of an annular structure, a channel (7-1) is formed in the side coil supporting layer (7-4), the channel (7-1) is used for placing the end surface heating device support (11-3), so that the main body of the end surface heating device (11) is located in the annular structure surrounded by the side coil supporting layer (7-4), and one end of the side heating device supporting rod (7-2) is fixed with the side coil supporting layer (7-4), the other end of the side heating device is fixed with the inner wall of the furnace body (1), and the side heating device (7) is fixed in the furnace body (1) through the side heating device support rod (7-2);
the side heating device (7) further comprises a thermocouple fixing tube (17), a thermocouple is arranged in the thermocouple fixing tube (17), one end of the thermocouple fixing tube (17) is located outside the furnace body (1), the other end of the thermocouple fixing tube (17) is fixed with the side coil supporting layer (7-4), and the thermocouple is used for measuring the temperature of the side heating device (7);
the method for preparing the large-size titanium alloy rod by using the large-size titanium alloy rod processing device comprises the following steps:
the end face heating device (11) is assembled in the middle of the side face heating device (7), and then the second heating deviceA parent body (5) to be connected is clamped on the first pressure plate (4) through a clamping plate (4-1), and a second parent body (10) to be connected is fixed on the fixing device; the clamped surfaces of the first parent body to be connected (5) and the second parent body to be connected (10) are non-connecting surfaces; the first pressure rod (3) and the second pressure rod (8) move to enable the first parent body (5) to be connected and the second parent body (10) to be connected to move to the position near the end face heating device (11), and the two sides of the first parent body and the second parent body are respectively kept at a spacing distance of 3mm-5mm from the end face heating device (11); the periphery of the side heating device (7) is provided with a heat-insulating layer; then the whole furnace body is vacuumized to 10 degrees-3-10-5Pa, heating the first parent body to be connected (5) and the second parent body to be connected (10) through a side heating device (7) and an end surface heating device (11), and heating the connection surface of the first parent body to be connected (5) and the second parent body to be connected (10) to a temperature T0-1350K;
after the temperature is stable and constant, hydrogen is filled into the furnace body through the air inlet pipe until the pressure reaches 10MPa, and then the end surface heating device and the second parent body (10) to be connected are together descended to the horizontal line at the bottom of the feeding device (16); and the distance between the end surface heating device (11) and the end surface of the second parent body (10) to be connected is kept larger than the diameter of the feeding device (16); then, the feeding device (16) is fed onto the connecting end face of the second parent body (10) to be connected, the feeding device (16) is rotated and reciprocated, so that the titanium hydride powder (19) in the material carrying groove is uniformly sprinkled on the connecting end face of the second parent body (10) to be connected, and meanwhile, the second pressure rod (8) is rotated, so that the titanium hydride powder (19) is uniformly distributed on the connecting end face of the whole second parent body (10) to be connected; according to the environment of the pressure in the atmosphere, after the titanium hydride is heated, partial hydrogen is released and then is melted into a hydrogen-containing melt; finally, a melting layer is quickly formed on the connecting end face of the second parent body (10) to be connected, the melting layer erodes the matrix of the second parent body (10) to be connected, and a liquid state region, a pasty region and a solid state distribution region are formed below the end face;
observing and confirming the melting condition of the end face through an observation window until the titanium hydride powder (19) is completely melted, and increasing the atmospheric pressure until the upper limit value of the balance pressure limiting valve (13) is 15MPa in the process; the temperature is fed back through the infrared thermometer (14), so that the temperature of the end face of the second parent body (10) to be connected is constant; if the end face of the second parent body (10) to be connected is not melted sufficiently, the power of the end face heating device (11) can be properly increased; then the feeding device (16) is far away from the connecting end face of the second parent body (10) to be connected; accelerating the rotation of the second parent body (10) to be connected, throwing out the melt which is rich in hydrogen and lacks other components of the matrix, exposing the clean surface of the semi-solid position, and then stopping the rotation; removing the end face heating device (11), rapidly lifting the second parent body to be connected (10) to enable the second parent body to be connected to be in contact with the end face of the first parent body to be connected (5), and applying pressure to 20-100MPa, so that most of the residual melt is extruded, and interface atomic bonding connection is achieved; gradually reducing the atmospheric pressure P0, and beginning to decompose hydrogen in the residual melt; because of the reduction of the hydrogen content of the melt, the crystallization point of the residual melt on the end surface is gradually increased until the residual melt is completely solidified, meanwhile, the system is vacuumized, the vacuum treatment is kept, the hydrogen elements of the first to-be-connected parent body (5), the second to-be-connected parent body (10) and the connection interface thereof are removed, and the refining of the welding area structure is realized through the vacuum dehydrogenation.
2. The large-size titanium alloy rod processing device according to claim 1, wherein: the titanium hydride powder furnace is characterized in that a material carrying groove (16-1) is formed in the feeding device (16), titanium hydride powder (19) is placed in the material carrying groove (16-1), a heat insulation sleeve (15) is formed on the outer side of the feeding device (16) located on the inner wall of the furnace body, one end, located on the outer side of the furnace body, of the feeding device (16) is connected with a third driving device, and the third driving device can drive the feeding device (16) to rotate and stretch.
3. The large-size titanium alloy rod processing device according to claim 1, wherein: the device further comprises an infrared thermometer (14), and the infrared thermometer (14) is used for measuring the temperature of the end face of the second parent body (10) to be connected.
4. The large-size titanium alloy rod processing device according to claim 1, wherein: the device still includes the pressure pipe, the one end of pressure pipe is located in the furnace body, the other end of pressure pipe is located outside the furnace body, and be located and be provided with manometer (2) on the pressure pipe outside the furnace body.
5. The large-size titanium alloy rod processing device according to claim 1, wherein: an observation window (18) is arranged on the furnace body, and the melting condition of the end face of the second parent body (10) to be connected is observed through the observation window (18).
6. The large-size titanium alloy rod processing device according to claim 1, wherein: the upside of furnace body is provided with the blast pipe, be provided with discharge valve (6) on the blast pipe, the middle part of furnace body is provided with balanced pressure-limiting pipe, be provided with balanced pressure-limiting valve (13) on the balanced pressure-limiting pipe, the lower part of furnace body is provided with the intake pipe, be provided with admission valve (12) in the intake pipe.
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| JP4453362B2 (en) * | 2003-12-25 | 2010-04-21 | 株式会社Ｉｈｉ | Diffusion bonding apparatus and diffusion bonding method |
| CN101745736B (en) * | 2009-12-23 | 2011-06-15 | 西北工业大学 | Diffusion welding method of copper alloy and stainless steel |
| CN102284759B (en) * | 2011-07-06 | 2013-01-23 | 重庆理工大学 | Mechanical rotation semi-solid welding method for aluminum alloy and composite material thereof in atmospheric environment |
| GB201112376D0 (en) * | 2011-07-19 | 2011-08-31 | Rolls Royce Plc | Boding of metal components |
| CN103817426A (en) * | 2014-03-13 | 2014-05-28 | 沈阳和世泰通用钛业有限公司 | Production method for titanium steel titanium composite board diffusion welding |
| CN105296774A (en) * | 2015-10-21 | 2016-02-03 | 西安奥邦科技有限责任公司 | Electromagnetic induction vacuum device for titanium-based alloy smelting and mix-melting |
| CN205600087U (en) * | 2015-12-27 | 2016-09-28 | 北京工业大学 | High frequency induction heating device suitable for metal / pottery damps and brazes |
| CN108213630A (en) * | 2016-12-12 | 2018-06-29 | 张跃 | It is a kind of to carry out the soldering system for heating/cooling down by medium of gas |
| CN206847373U (en) * | 2017-06-12 | 2018-01-05 | 江西桐青金属工艺品股份有限公司 | A kind of medium frequency induction melting furnace being rapidly heated |
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| CN111421218A (en) * | 2020-04-28 | 2020-07-17 | 上海交通大学 | Hydrogen-containing Ti2Low-temperature diffusion welding method for AlNb-based alloy and TC4 titanium alloy |
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Denomination of invention: Large size titanium alloy rod processing device Effective date of registration: 20230823 Granted publication date: 20220722 Pledgee: Everbright Xinglong Trust Co.,Ltd. Pledgor: GANZHOU HAISHENG CEMENTED CARBIDE CO.,LTD. Registration number: Y2023980053601 |
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