CN108746911B - Preparation device for radial bearing with diamond compact - Google Patents
Preparation device for radial bearing with diamond compact Download PDFInfo
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- CN108746911B CN108746911B CN201810635673.2A CN201810635673A CN108746911B CN 108746911 B CN108746911 B CN 108746911B CN 201810635673 A CN201810635673 A CN 201810635673A CN 108746911 B CN108746911 B CN 108746911B
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- brazing
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 115
- 239000010432 diamond Substances 0.000 title claims abstract description 115
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000005219 brazing Methods 0.000 claims abstract description 59
- 230000006698 induction Effects 0.000 claims abstract description 49
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 238000005087 graphitization Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000005476 soldering Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Images
Classifications
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/002—Soldering by means of induction heating
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Induction Heating (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a device for preparing a radial bearing of a diamond composite sheet, which comprises a tool and a heating induction coil; the tool comprises a cylinder body, wherein the cylinder body is used for being sleeved on the inner side of a bearing inner ring or the outer side of a bearing outer ring provided with the diamond composite sheets, and a working window is formed in the cylinder body so as to expose at least one diamond composite sheet; the heating induction coil comprises two opposite working planes, the two working planes are formed by coiling wires, and the distance between the two working planes is larger than the wall thickness of the inner ring or the outer ring of the bearing so as to insert the inner side and the outer side of the diamond composite sheet for induction brazing. By adopting the preparation device, induction brazing is carried out through the heating induction coil, so that the brazing temperature can be effectively controlled, and the graphitization problem of diamond in the brazing process is greatly reduced. The heating induction coil is provided with a working plane and is matched with a working window of the tool to locally heat the diamond composite sheet, so that the processing process is optimized to the maximum extent, and the full-length welding rate of brazing is ensured.
Description
Technical Field
The invention relates to the technical field of bearing production, in particular to a device for preparing a radial bearing with a diamond compact, and further relates to a tool for completing the device and the design of an induction coil.
Background
Radial bearings in mechanical transmissions require the surface of the bearing material to have high hardness, high wear resistance, and low friction coefficient, while the material matrix of the bearing is a hardened and tempered alloy steel to ensure sufficient strength and toughness of the overall assembly. Diamond is an ideal bearing material (i.e., has extremely high hardness, extremely low coefficient of friction, and extremely high thermal conductivity).
In recent years, diamond compacts (PDCs) have gained widespread use due to the rapid development of artificial polycrystalline diamond. PDC is produced by pressing micron diamond powder on a preformed hard alloy base with a certain interface design under high temperature (higher than 1350 ℃) and high pressure (higher than 5.0GPa) and a catalyst (cobalt, nickel and the like). The polycrystalline diamond after high-temperature and high-pressure sintering has strong diamond carbon-carbon bond combination. And the pressed PDC is subjected to EDM discharge wire cutting processing, grinding and polishing to be finally formed. Therefore, PDC chips generally consist of two parts: the upper surface is a diamond layer typically 1-2 mm thick; the base is cemented carbide. In order to reduce the stress generated during the preparation of the interface and increase the bonding strength, a transition layer is usually designed and added between the diamond and the cemented carbide base. The composite body of the PDC sheet integrates polycrystalline diamond of the working surface and a hard alloy base with certain strength and toughness. Because diamond and most metals are not wet, the cemented carbide substrate of the PDC compact provides the potential for bonding connections to other portions of the overall workpiece.
With the increasing demand for downhole tools in oil and gas industry for oil well excavation, downhole bearings not only provide efficient transfer of force or torque, but also increase service life. Thus, PDC radial bearings have a huge market under the widespread use of PDC thrust bearings. PDC radial bearings typically have PDC compacts fixed by brazing to the inner wall of the outer race or the outer wall of the inner race of the bearing. There are many types of brazing of PDC compacts, most of which are typically flame brazing. Oxyacetylene flame brazing is used in many industries, such as production and manufacture of PDC bits, downhole PDC reamers, and the like, due to its simple process and high applicability. Followed by vacuum brazing and induction brazing.
Key indicators for brazing PDC compacts are control of the brazing temperature (e.g., below 750 ℃ to reduce graphitization of the polycrystalline diamond layer) and the full-weld rate (to provide adequate interfacial bond strength between the compact and the carrier). Oxyacetylene flame brazing is difficult to control temperature, is very prone to overheating, and presents operational difficulties in the welding of individual PDCs. In addition, the direct contact between the flame and the diamond layer can easily induce the graphitization of the diamond on the surface layer of the composite sheet. Vacuum brazing is not suitable for PDC radial bearings because of design and structural features.
To sum up, how to effectively solve the problems of difficult brazing operation, poor welding effect and the like of the PDC composite sheet is a problem to be solved by the technical personnel in the field at present.
Disclosure of Invention
In view of this, the present invention provides a device for manufacturing a radial bearing with a diamond compact, wherein the device can effectively solve the problems of difficult brazing operation and poor welding effect of the PDC compact through the structural design.
In order to achieve the purpose, the invention provides the following technical scheme:
a device for preparing a radial bearing with a diamond composite sheet comprises a tool and a heating induction coil;
the tool comprises a cylinder body, wherein the cylinder body is used for being sleeved on the inner side of a bearing inner ring or the outer side of a bearing outer ring provided with diamond composite sheets, and a working window is formed in the cylinder body so as to expose at least one diamond composite sheet;
the heating induction coil comprises two opposite working planes which are formed by coiling wires, and the distance between the two working planes is larger than the wall thickness of the inner ring or the outer ring of the bearing so as to insert the inner side and the outer side of the diamond composite sheet for induction brazing.
Preferably, in the above preparation apparatus, the cylindrical body has an opening along an axial direction, and further includes a fastening member, two ends of the fastening member are respectively connected to two sides of the opening, and at least one end of the fastening member is detachably and fixedly connected.
Preferably, in the above preparation apparatus, at least one side of the opening is provided with a plurality of connecting portions in sequence along a circumferential direction, and the fastening member is selectively connected to different connecting portions to adjust a circumference of the cylindrical body, or;
at least one end of the fastening part is sequentially provided with a plurality of connecting parts along the circumferential direction, and the corresponding side of the opening is selectively connected with different connecting parts to adjust the circumference of the cylinder.
Preferably, in the above preparation apparatus, two opposite sides of the opening are provided with grooves, and the grooves form the working window.
Preferably, in the above manufacturing apparatus, the size of the working window is such that 2 to 3 diamond compacts can be exposed.
Preferably, in the above preparation apparatus, the cylindrical body is fixedly connected with a working handle at both sides in the radial direction.
Preferably, in the above manufacturing apparatus, the heating induction coil further includes a connection ring, the connection ring connects the two working planes into a whole, and a ring width of the connection ring is greater than a distance between the two working planes.
Preferably, in the above preparation apparatus, the connection ring has a circular shape.
Preferably, in the above manufacturing apparatus, the working plane is formed by winding the wire rod in a serpentine shape or winding the wire rod in a spiral shape.
Preferably, the manufacturing device further comprises an infrared thermometer, and a temperature measuring point of the infrared thermometer is located on one side of the diamond compact, which is close to the steel body.
The preparation device of the diamond compact radial bearing provided by the invention comprises a tool and a heating induction coil. Wherein, the frock includes the cylinder, and the cylinder is used for the cover to establish the inboard of the bearing inner race of installing the diamond compact piece or the outside of bearing inner race, has seted up the work window on the cylinder to expose at least one diamond compact piece. The heating induction coil comprises two opposite working planes, the two working planes are formed by coiling wires, and the distance between the two working planes is larger than the wall thickness of the inner ring or the outer ring of the bearing so as to insert the inner side and the outer side of the diamond composite sheet for induction brazing.
When the preparation device provided by the invention is used for brazing the radial bearing of the diamond composite sheet, the hole of the radial bearing steel body for accommodating the composite sheet is cleaned and dried by ultrasonic waves, the soldering paste, the soldering flux sheet and the diamond composite sheet are sequentially applied, and then the tool is installed on a workpiece. When the workpiece is a bearing inner ring and the diamond compact is arranged on the outer wall of the bearing inner ring, the cylinder body is sleeved outside the bearing inner ring to support the diamond compact and prevent the diamond compact from falling off; when the workpiece is the bearing outer ring and the diamond compact is arranged on the inner wall of the bearing outer ring, the cylinder body is sleeved in the bearing outer ring to support the diamond compact and prevent the diamond compact from falling. The diamond compact to be brazed may be positioned in the working window by rotating the workpiece. The workpiece is placed on the brazing table, the wall (namely the bearing wall) of the workpiece is deep into the two working planes of the heating induction coil, and the working planes correspond to the working windows, so that the diamond composite sheets to be brazed are positioned in the two working planes to perform induction brazing. And after the brazing of one diamond compact is finished, rotating the workpiece to a next diamond compact to be welded to correspond to the working window so as to perform induction brazing on the next diamond compact. And repeating the steps until all the diamond composite sheets are brazed, and cooling and cleaning the diamond composite sheets to obtain complete workpieces after the brazing is finished.
By adopting the preparation device, induction brazing is carried out through the heating induction coil, the characteristic of induction brazing can be fully utilized to effectively control the brazing temperature, so that the graphitization problem of diamond in the brazing process is greatly reduced. The heating induction coil is provided with a working plane and is matched with a working window of the tool to locally heat the diamond composite sheet, so that the processing process is optimized to the maximum extent, and the full-length welding rate of brazing is ensured. Meanwhile, due to the guarantee of the full-welding rate, the bonding strength of the welding seam is more consistent and higher, and the welding effect is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a tooling structure of a manufacturing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a heating coil;
FIG. 3 is another schematic diagram of a heating coil;
FIG. 4 is a cross-sectional org-chart of a weld;
FIG. 5 is an axial cross-sectional anatomical view of a weld.
The drawings are numbered as follows:
a cylinder body 11, a working window 12, an opening 13, a fastening part 14 and a working handle 15;
a working plane 21 and a connecting ring 22.
Detailed Description
The embodiment of the invention discloses a preparation device of a radial bearing with a diamond compact, which is convenient for preparation operation and improves the welding effect.
The technical solutions in the embodiments of the present invention will be 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.
Referring to fig. 1-5, fig. 1 is a schematic view of a tooling structure of a manufacturing apparatus according to an embodiment of the invention; FIG. 2 is a schematic diagram of a heating coil; FIG. 3 is another schematic diagram of a heating coil; FIG. 4 is a cross-sectional org-chart of a weld; FIG. 5 is an axial cross-sectional anatomical view of a weld.
In one embodiment, the device for preparing the radial bearing with the diamond compact provided by the invention comprises a tool and a heating induction coil.
Wherein, the frock includes cylinder 11, and cylinder 11 is used for the cover to establish the inboard of the bearing inner race of installing the compound piece of diamond or the outside of bearing inner race, has seted up work window 12 on the cylinder 11 to expose at least one compound piece of diamond. That is, the cylinder 11 may be a cylinder 11 engaged with the bearing inner ring or a cylinder 11 engaged with the bearing outer ring, or the tool includes different cylinders 11, which may be engaged with the bearing inner ring or the bearing outer ring, respectively. To diamond compact radial bearing, it both can be fixed diamond compact piece on the outer wall of bearing inner race, also can fix diamond compact piece on the inner wall of bearing outer race, perhaps all fix diamond compact piece on the outer wall of bearing inner race and bearing outer race's inner wall, therefore corresponding cylinder 11 that sets up, make its diameter size can cooperate with bearing inner race or bearing outer race, so that 11 covers of cylinder establish the inboard of the bearing inner race of installing diamond compact piece or the outside of bearing outer race, thereby play the supporting role to diamond compact piece, prevent that it from dropping.
Taking the cylinder 11 and the bearing inner race as an example, the diameter D of the cylinder 11 may be set to satisfy the following relation:
D＝d+h+e
in the formula, d is the outer diameter of the bearing inner ring, h is the height of the diamond compact protruding out of the outer wall of the bearing inner ring, and e is the adjustment deviation, and the adjustment deviation is generally 2-4 mm. That is, cylinder 11 cover is used for preventing diamond compact piece from dropping outside the bearing inner race, but it is preferred not to the extrusion of diamond compact piece to the relative rotation that bearing and frock will in the process of brazing. The relationship of the diameters of the cylinder 11 and the bearing outer race is similar to that described above and will not be described further herein. The diameter of the specific cylinder 11, namely the size of the gap between the specific cylinder and the diamond compact can be controlled according to the requirement. The thickness of the cylindrical body 11 may be specifically in the range of 1 to 3 mm.
Working window 12 has been seted up on cylinder 11, and then when 11 covers of cylinder establish the inboard of the bearing inner race of installing diamond compact or the outside of bearing inner race, the work piece is the in-process of bearing inner race or bearing inner race horizontal axial rotation promptly, and the diamond compact of working window 12 department can expose to in order to respond to the brazing. The specific shape of the working window 12 is not limited and the size thereof is larger than the size of the at least one diamond compact so that the at least one diamond compact can be exposed.
The heating induction coil comprises two opposite working planes 21, the two working planes 21 are formed by coiling wires, and the distance between the two working planes is larger than the wall thickness of the inner ring or the outer ring of the bearing so as to insert the inner side and the outer side of the diamond composite sheet for induction brazing. The two opposite working surfaces are formed by coiling a wire rod such as a copper pipe, and the upper wall of the bearing inner ring or the bearing outer ring is inserted between the two working surfaces during induction brazing, so that the diamond compact is just opposite to the two working surfaces to perform induction brazing. Under the condition that the diamond compact protrudes out of the bearing inner ring or the bearing outer ring, the distance between the two working planes 21 is larger than the thickness of the wall of the workpiece and the height of the diamond compact protruding out of the bearing inner ring or the bearing outer ring. Preferably, the distance between the two working planes 21 is the sum of the wall thickness of the bearing inner ring or the bearing outer ring and a preset operating height, and the preset operating height is generally 10mm, so that an auxiliary tool has an operating space during the brazing process.
When the preparation device provided by the invention is used for brazing the radial bearing of the diamond composite sheet, the hole of the radial bearing steel body for accommodating the composite sheet is cleaned and dried by ultrasonic waves, the soldering paste, the soldering flux sheet and the diamond composite sheet are sequentially applied, and then the tool is installed on a workpiece. When the workpiece is a bearing inner ring and the diamond compact is arranged on the outer wall of the bearing inner ring, the cylinder body 11 is sleeved outside the bearing inner ring to support the diamond compact and prevent the diamond compact from falling off; when the workpiece is the bearing outer ring and the diamond compact is arranged on the inner wall of the bearing outer ring, the cylinder body 11 is sleeved in the bearing outer ring to support the diamond compact and prevent the diamond compact from falling. The diamond compact to be brazed may be positioned in the working window 12 by rotating the workpiece. The workpiece is placed on the brazing table such that the wall of the workpiece (i.e., the bearing wall) extends into the two working planes 21 of the heating induction coil, and the working planes 21 correspond to the working windows 12, so that the diamond compact to be brazed is positioned in the two working planes 21 for induction brazing. After the brazing of one diamond compact is finished, the workpiece is rotated to the next diamond compact to be welded to correspond to the working window 12, and the relative position of the working window 12 and the diamond compact to be welded is guaranteed to be unchanged, so that the next diamond compact is subjected to induction brazing. And repeating the steps until all the diamond composite sheets are brazed, and cooling and cleaning the diamond composite sheets to obtain complete workpieces after the brazing is finished.
By adopting the preparation device, induction brazing is carried out through the heating induction coil, the characteristic of induction brazing can be fully utilized to effectively control the brazing temperature, so that the graphitization problem of diamond in the brazing process is greatly reduced. The heating induction coil is provided with a working plane 21 and is matched with the working window 12 of the tool to locally heat the diamond composite sheet, so that the processing process is optimized to the maximum extent, and the full-length welding rate of brazing is ensured. Meanwhile, due to the guarantee of the full-welding rate, the bonding strength of the welding seam is more consistent and higher, and the welding effect is effectively improved.
Further, the cylinder 11 has an opening 13 along the axial direction, and further includes a fastening member 14, two ends of the fastening member 14 are respectively connected with two sides of the opening 13, and at least one end is detachably and fixedly connected. That is, the cylindrical body 11 is formed by a sheet structure to form a cylinder shape, and the openings 13 are connected by fastening members 14. And because at least one end of the fastening part 14 is fixedly connected with one side of the opening 13 in a detachable manner, the cylinder 11 can be opened by detaching the fastening part 14, so that the cylinder 11 is sleeved outside the bearing inner ring, and then the fastening part 14 is fixedly connected with the cylinder 11 to form the cylinder 11 with a fixed diameter, thereby effectively supporting the diamond compact. Specifically, the fastening member 14 may be a sheet-shaped connector, one end of which is fixedly connected to one side of the opening 13 by welding or the like, and the other end of which is fixedly connected to the other side of the opening 13 by a detachable manner such as a bolt or the like.
Further, at least one side of the opening 13 is sequentially provided with a plurality of coupling portions in a circumferential direction, and the fastening member 14 is optionally coupled with different coupling portions to adjust a circumference of the cylinder 11, or; at least one end of the fastening member 14 is sequentially provided with a plurality of coupling portions in a circumferential direction, and the corresponding sides of the opening 13 are selectively coupled with different coupling portions to adjust the circumference of the cylinder 11. That is, by providing a plurality of coupling portions, the diameter of the cylindrical body 11, that is, the circumferential length of the cylindrical body 11 is adjusted by adjusting the coupling position of the fastening member 14 to the opening 13 side, so that it is possible to accommodate different sizes of bearing inner rings or bearing outer rings. Here, a plurality of the present invention means two or more. Specifically, when the fastening member 14 is bolted to at least one side of the opening 13, a plurality of through holes or threaded holes may be formed in at least one side of the opening 13 along the circumferential direction, that is, the connecting portion is a through hole or a threaded hole that is engaged with a bolt, and the fastening member 14 is engaged with different through holes or threaded holes by a bolt, thereby adjusting the circumference of the cylinder 11. Alternatively, at least one end of the fastening member 14 may be provided with a plurality of through holes or screw holes along the circumferential direction, that is, the connecting portion may be a through hole or a screw hole engaged with a bolt, and the corresponding side of the opening 13 may be engaged with different through holes or screw holes by a bolt, thereby adjusting the circumferential length of the cylindrical body 11. Alternatively, a plurality of through holes or threaded holes may be formed in at least one side of the opening 13 in the circumferential direction, and a plurality of through holes or threaded holes may be formed in the corresponding side of the fastening member 14 in the circumferential direction, so that the circumferential length of the cylinder 11 may be adjusted by fitting bolts to different through holes or threaded holes in the corresponding sides of the fastening member 14 and the opening 13. The connecting portion is described as a through hole or a threaded hole, and the connecting portion may be a detachable connecting structure such as a snap, if necessary, and is not limited specifically here.
Specifically, two opposite sides of the opening 13 are provided with grooves, and the grooves form a working window 12. That is, as shown in fig. 1, the cylindrical body 11 has recesses corresponding to the left and right sides of the opening 13 to form the working window 12, and the width of the recesses plus the width of the opening 13 determines the width of the working window 12. Preferably, the working window 12 may be opened at one end of the cylinder 11 to facilitate induction brazing in cooperation with the heating coil. In this embodiment, at least one side of the opening 13 is sequentially provided with a plurality of coupling portions in the circumferential direction, and the fastening member 14 is optionally coupled with different coupling portions to adjust the circumference of the cylinder 11, or; at least one end of the fastening member 14 is sequentially provided with a plurality of coupling portions in a circumferential direction, and the corresponding sides of the opening 13 are selectively coupled with different coupling portions to adjust the circumference of the cylinder 11. The circumference of the cylinder 11 can be adjusted and the width of the working window 12 can be adjusted synchronously to adapt to different sizes of bearing inner rings or bearing outer rings.
In each of the above embodiments, the working window 12 is sized to expose 2-3 diamond compacts. Specifically, the axial length of the working window 12 is greater than the length of the diamond compacts, and the circumferential width of the working window 12 is greater than the total width of 2-3 diamond compacts, namely the sum of the width of each diamond compact and the distance between two adjacent diamond compacts. When the diamond compact is circular, the width and length of the diamond compact are both diameters. 2-3 diamond compact pieces can be exposed through setting up work window 12, and then when a diamond compact piece is just to two relative working planes 21 of heating induction coil, working plane 21 can play the effect of preheating to the diamond compact piece of side, further promotes the efficiency of induction brazing.
Specifically, the cylinder 11 is fixedly connected with two working handles 15 along the radial direction. The cylinder 11 is conveniently operated by the operating handle 15, such as being sleeved outside the bearing inner ring or inside the bearing outer ring. Specifically, the operating handle 15 may be L-shaped, one side of the L-shape is fixedly connected to the inner wall of the cylinder 11 by welding, and the other side of the L-shape extends radially outward.
On the basis of the above embodiments, the heating induction coil further includes a connection ring 22, the connection ring 22 connects the two working planes 21 into a whole, and the width of the connection ring 22 is larger than the distance between the two working planes 21. That is, the heating induction ring is formed by winding a wire, and specifically, the working plane 21, the connection ring 22 and the other working plane 21 can be formed by winding one wire in sequence. Through the arrangement of the connecting ring 22, the heating induction coil is of an integral structure, and is convenient to process and control temperature. And the ring width of the connecting ring 22 is larger than the distance between the two working planes 21, so that the induced current of the connecting ring 22 is smaller, the induction temperature is lower, and when the working planes 21 perform induction brazing on the diamond composite sheet, the influence of the connecting ring 22 on other diamond composite sheets is smaller. Especially, when two rings and more than two rings of diamond composite sheets are arranged on the bearing inner ring or the bearing outer ring, when the diamond composite sheets of the inner ring are subjected to induction brazing in sequence, the connecting ring 22 has small influence on the diamond composite sheets of the outer ring, and the welding quality is further improved. Preferably, the connection ring 22 is circular, such as the two heating induction coils shown in fig. 2 and 3, and one wire is bent to form two opposite working planes 21 and the connection ring 22, and the plane of the connection ring 22 is perpendicular to the working planes 21.
Further, the working plane 21 is formed by winding the wire in a serpentine shape or winding the wire in a spiral shape. I.e. the wire is arranged in a serpentine bend forming the working plane 21, as shown in fig. 2, or the wire is arranged in a helical bend forming the working plane 21, as shown in fig. 3. Preferably, the two working planes 21 are symmetrically arranged, i.e. the running direction of the wire in the two working planes 21 is symmetrical.
On the basis of the above embodiments, the soldering flux further comprises an infrared thermometer, and a temperature measuring point of the infrared thermometer is located on one side of the diamond composite sheet close to the steel body, so that the soldering temperature is not too high to reduce the graphitization problem, and the solder is fully melted. In the case of a built-in temperature control system, it is necessary to set the brazing temperature according to the brazing material. For example, for solder with BAg-24, the brazing temperature is set at 720 + -10 deg.C.
The utility model provides a preparation facilities of diamond compact radial bearing, thereby the characteristic of make full use of induction brazing has controlled the temperature of brazing effectively and has reduced the graphitization problem of diamond in the brazing process to a great extent. The heating induction coil which is specially designed and manufactured is utilized to locally heat the workpiece, so that the processing process is optimized to the maximum extent, and the full-length welding rate of brazing is ensured. FIG. 4 is a cross-sectional org-chart of the weld, as shown in FIGS. 4 and 5; FIG. 5 is an axial cross-sectional anatomical view of a weld. In fig. 4, the steel substrate is on the upper left, and cemented carbide is on the lower right. In fig. 5, the left side is a steel substrate, and the right side is cemented carbide. In the practice of BAg-24, the bonding strength of the welding seam of the preparation device is consistent within 0.16 mm due to the guarantee of the full welding rate and reaches more than 250 MPa.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The preparation device of the radial bearing of the diamond compact is characterized by comprising a tool and a heating induction coil;
the tool comprises a cylinder body, wherein the cylinder body is used for being sleeved on the inner side of a bearing inner ring or the outer side of a bearing outer ring provided with diamond composite sheets, and a working window is formed in the cylinder body so as to expose at least one diamond composite sheet;
the heating induction coil comprises two opposite working planes which are formed by coiling wires, and the distance between the two working planes is larger than the wall thickness of the inner ring or the outer ring of the bearing so as to insert the inner side and the outer side of the diamond composite sheet for induction brazing.
2. The manufacturing apparatus as set forth in claim 1, wherein the cylindrical body has an opening in an axial direction, and further comprising a fastening member having both ends connected to both sides of the opening, respectively, and at least one end being detachably fixed.
3. The manufacturing apparatus according to claim 2, wherein at least one side of the opening is sequentially provided with a plurality of coupling portions in a circumferential direction, and the fastening member is selectively coupled with different coupling portions to adjust a circumference of the cylinder, or;
at least one end of the fastening part is sequentially provided with a plurality of connecting parts along the circumferential direction, and the corresponding side of the opening is selectively connected with different connecting parts to adjust the circumference of the cylinder.
4. The manufacturing apparatus as set forth in claim 3 wherein said opening is notched on opposite sides thereof, said notches forming said working window.
5. The apparatus of claim 1, wherein the working window is sized to expose 2-3 of the diamond compacts.
6. The manufacturing apparatus according to claim 1, wherein a working handle is fixedly connected to each of both sides in the radial direction of the cylindrical body.
7. The manufacturing apparatus as set forth in any one of claims 1 to 6 wherein said heating coil further comprises a connecting ring integrally connecting two of said working planes, and said connecting ring has a ring width larger than a space between said two working planes.
8. The manufacturing apparatus as set forth in claim 7 wherein said connecting ring is circular.
9. The manufacturing apparatus of claim 7, wherein the working plane is formed by winding the wire in a serpentine shape or winding the wire in a spiral shape.
10. The manufacturing device according to any one of claims 1 to 6, further comprising an infrared thermometer, wherein a temperature measuring point of the infrared thermometer is located on one side of the diamond compact close to the steel body.
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| CN201810635673.2A CN108746911B (en) | 2018-06-20 | 2018-06-20 | Preparation device for radial bearing with diamond compact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111014866A (en) * | 2019-12-24 | 2020-04-17 | 邯郸慧桥复合材料科技有限公司 | Brazing method for wear-resistant sheet |
| CN112935447A (en) * | 2021-03-17 | 2021-06-11 | 四川雄琛科技有限公司 | Welding process for welding diamond composite sheet on bearing |
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| JP2006179359A (en) * | 2004-12-24 | 2006-07-06 | High Frequency Heattreat Co Ltd | Induction heating coil and induction heating method for heating annular member from inner and outer periphery |
| CN102458744A (en) * | 2009-04-16 | 2012-05-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
| JP2014041789A (en) * | 2012-08-23 | 2014-03-06 | Nsk Ltd | Induction heating apparatus, and induction heating method |
| CN205676507U (en) * | 2016-06-12 | 2016-11-09 | 乐清市精创机械制造有限公司 | A kind of bearing HF induction heating apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8950649B2 (en) * | 2013-03-14 | 2015-02-10 | Us Synthetic Corporation | Apparatus for brazing radial bearings and related methods |
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|---|---|---|---|---|
| JP2006179359A (en) * | 2004-12-24 | 2006-07-06 | High Frequency Heattreat Co Ltd | Induction heating coil and induction heating method for heating annular member from inner and outer periphery |
| CN102458744A (en) * | 2009-04-16 | 2012-05-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
| JP2014041789A (en) * | 2012-08-23 | 2014-03-06 | Nsk Ltd | Induction heating apparatus, and induction heating method |
| CN205676507U (en) * | 2016-06-12 | 2016-11-09 | 乐清市精创机械制造有限公司 | A kind of bearing HF induction heating apparatus |
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Denomination of invention: A preparation device for diamond composite radial bearings Effective date of registration: 20231226 Granted publication date: 20200918 Pledgee: Changsha Bank city branch of Limited by Share Ltd. Pledgor: SEED TECHNOLOGIES Corp.,Ltd. Registration number: Y2023980074149 |
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