CN107262825B - Multi-layer abrasive brazing bead and manufacturing method thereof - Google Patents
Multi-layer abrasive brazing bead and manufacturing method thereof Download PDFInfo
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- CN107262825B CN107262825B CN201710670412.XA CN201710670412A CN107262825B CN 107262825 B CN107262825 B CN 107262825B CN 201710670412 A CN201710670412 A CN 201710670412A CN 107262825 B CN107262825 B CN 107262825B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
- B23D61/185—Saw wires; Saw cables; Twisted saw strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/127—Straight, i.e. flat, saw blades; strap saw blades
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
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- Polishing Bodies And Polishing Tools (AREA)
Abstract
A multilayer abrasive brazing bead comprises a carcass working layer and a matrix, and is characterized in that: the matrix is a hollow step cylinder with a large middle diameter and small two ends, two or more layers of concentric surface cutting unit annular columns are brazed on the circumferential surface of the step in the middle of the matrix to form a carcass working layer, and single-layer abrasive particles are uniformly distributed on each layer of concentric surface cutting unit annular column. The invention has the advantages that: abrasive particles are distributed in layers, the number of abrasive particles participating in one-time work is controlled, and the efficiency advantage of the brazing tool is ensured; the abrasive materials are distributed in a staggered manner in multiple layers, so that the effective working time of the abrasive particles is prolonged, and the service life of the abrasive particles can be greatly prolonged; the solder layer adopts a mesh-shaped welding wire or a welding sheet, and abrasive particles are directly embedded into the solder layer, so that the influences of air holes, residues and the like generated by conventional soldering paste or glue solution on the soldering quality are eliminated.
Description
Technical Field
The invention relates to a rope saw, in particular to a multi-layer abrasive brazing bead and a manufacturing method thereof, and the manufactured product is applied to cutting processing of brittle and hard materials such as stone, concrete, cast iron, steel members and the like.
Background
The brazing diamond tool is used as a third-generation product after sintering and electroplating, has been widely popularized and used in the processing fields of cutting, drilling, polishing and grinding of brittle and hard materials, and has good economic benefit, but the existing brazing tool is basically all in single-layer abrasive grain arrangement, has relatively short service life and relatively high use cost. In recent years, in order to improve the service life of brazing, technological staff research and develop solder on one hand and select abrasive particles, but the effect is not obviously improved; on the other hand, more innovative researches are also carried out on the structure of the bead string, including making the cylindrical surface into a waist drum shape, a cone shape or a double cone shape (as shown in fig. 1), even processing the outer surface into a spiral step shape, supposing that abrasive particles are put into operation in stages along with the cutting process, achieving the aim of multi-layer cutting, but in practice, the structural changes do not have substantial breakthrough in improving the service life, still only a single-layer tool with a layer of abrasive particles distributed on a matrix has very limited promotion on the service life of the tool, and because of the problem that the service life of the single-layer brazing diamond tool is not high, many diamond bead string rope saw application fields at present cannot be counterbalanced with a hot-pressed sintering diamond bead string rope saw.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides the multi-layer abrasive brazing bead which truly realizes multi-layer abrasive particle arrangement on the structure, realizes the breakthrough of a brazing single-layer diamond tool, greatly prolongs the service life, and reduces the unit use cost, and the manufacturing method thereof.
The technical scheme adopted by the invention is a multi-layer abrasive brazing bead, which consists of a carcass working layer and a matrix, and is characterized in that: the matrix is a hollow step cylinder with a large middle diameter and small two ends, two or more layers of concentric surface cutting unit annular columns are brazed on the circumferential surface of the step in the middle of the matrix to form a carcass working layer, and single-layer abrasive particles are uniformly distributed on each layer of concentric surface cutting unit annular column.
The concentric surface cutting unit ring column is made of abrasive particles embedded in the solder layer.
The spacing between adjacent abrasive particles of the annular columns of the concentric surface cutting units of the same layer is 0.0-1.0mm. Because the abrasive particles are polyhedrons, even if the spacing between adjacent abrasive particles is 0.0mm, the gaps at the maximum edges of the abrasive particles are 0, and the rest positions are gaps, so that enough scraps containing space is reserved.
The abrasive particles are arranged in layers, so that the abrasive particles participating in one time are controlled.
The abrasive particles of the annular columns of the adjacent two layers of concentric surface cutting units are staggered, namely, the center points of the projection positions of the abrasive particles on the circumferential surfaces are not overlapped, and the abrasive particles of the adjacent layers are not on the same line in the radial direction.
And the positions of welding lines among the abrasive particles in the concentric surface cutting unit ring columns are the positions of the abrasive particles of the next layer. The linear speed of the rope saw is about 30m/s in the use process, the beads also need to bear the strong scouring of the cut fine particles, the currently used silver-based and copper-based solders are relatively weak in scouring resistance and abrasion resistance, after the solder part of the working layer is worn and consumed, the abrasive particles of the next layer are exposed to effectively resist the scouring of the cut fine particles, and further abrasion and aggravation of the solder layer supporting the abrasive particles by the working layer are prevented, so that the abrasive particles lose support and fail. Therefore, the effective time of the single-layer abrasive particles participating in the work is prolonged, namely the service life of the single layer is prolonged compared with that of the single-layer abrasive particles, and the single-layer abrasive particles have a multi-layer abrasive structure, so that the service life can be greatly prolonged.
The diameter of the step surface of the brazing abrasive particle part is 0.5-3.0mm larger than the diameter of the two ends. When the rope saw is manufactured, the two ends of the base body are wrapped by the isolating sleeve layers between the beads until the end faces of the step faces are reached, the outer diameter of the isolating sleeve does not exceed the diameter of the working face, so that the beads are effectively supported and prevented from moving axially and rotating radially, but the diameter difference between the two ends and the middle working face is not larger and better, and the effect that the diameter difference is 0.5-3.0mm is obtained by practical use testing is better.
The manufacturing method of the multi-layer abrasive brazing bead comprises the steps that a matrix is a hollow step cylinder with a large middle diameter and two small ends, and is characterized in that: it comprises the following working procedures: 1) Embedding abrasive particles into the solder layer to prepare an unfolding surface of the concentric surface cutting unit ring column; 2) Cutting a welding material layer inlaid with abrasive particles in a corresponding area according to the area of the concentric surface cutting unit ring column designed on the surface of the matrix; 3) Then sequentially wrapping the base body layer by layer in a staggered manner of the abrasive particles of the adjacent layers, and mutually staggering the joints of the adjacent layers to form a bead blank; 4) Heating the bead blank in a vacuum furnace to make the solder layer and layer, solder and abrasive material and matrix produce metallurgical bonding reaction so as to obtain the invented soldering bead product.
The solder layer is a mesh-shaped welding wire or a welding sheet.
And uniform holes are formed in the solder layer, and the diameters of the holes are 0.5-0.9 times of the diameters of the abrasive particles for embedding the abrasive particles.
The abrasive particles are embedded into preformed holes of the mesh or sheet solder, and the thickness of the solder layer is 0.5-0.8 times of the diameter of the abrasive particles.
The technical effects of the invention are as follows: 1) Abrasive particles are distributed in layers, the number of abrasive particles participating in one-time work is controlled, and the efficiency advantage of the brazing tool is ensured; 2) The working layer participates in the welding line position among the working abrasive particles, the position of the abrasive particles of the next layer is in the radial direction, the abrasive particles exposed after the surface welding lines are worn out by scouring, the defects of low scouring resistance strength, wear resistance and the like of common silver-based and copper-based welding lines are overcome, the effective working time of the abrasive particles is prolonged, the effective time of single-layer abrasive particles participating in the work is prolonged, namely the service life of the single-layer abrasive particles is prolonged compared with that of the single-layer abrasive particles, and in addition, the abrasive particles are of a multi-layer abrasive material structure, so that the service life can be greatly prolonged; 3) The abrasive particles of the adjacent working layers are distributed in a staggered manner in the radial direction, when the abrasive particles of the first layer reach the designed service life and wear down, the reserved pits can enable the abrasive particles of the next layer to have enough exposure height, and the persistence of efficiency advantage is ensured; 4) The solder layer adopts a mesh-shaped welding wire or a welding sheet, and abrasive particles are directly embedded into the solder layer, so that the influences of air holes, residues and the like generated by conventional soldering paste or glue solution on the soldering quality are eliminated. 5) The solder layer adopts the mesh-shaped welding wire or the soldering lug, the thickness of the solder layer is easy to control so as to ensure the exposure height of the abrasive particles, the solder layer can be easily overlapped under the action of mechanical force, and the problem that the ordered blank making of the multi-layer abrasive particles cannot be carried out by using powdery or pasty solder is solved.
Drawings
FIG. 1 is a schematic diagram of a prior art brazed diamond wire saw bead
FIG. 2 is a schematic diagram of a double-layer braze bead structure according to the present invention
FIG. 3 is a schematic view of concentric surface cutting unit ring column
FIG. 4 is a schematic diagram of a solder tab solder layer structure
FIG. 5 is a schematic illustration of the formation of a solder layer of a solder wire
Wherein: 1 concentric surface cutting unit annular columns of holes 25 of abrasive particles 22 and welding layers 23 of a matrix 2 matrix working layer 21.
Detailed Description
The following examples will be presented to enable those skilled in the art to more understand the invention and are not intended to limit the invention in any way.
As shown in figures 2 and 3, the multi-layer abrasive brazing bead consists of a carcass working layer 2 and a matrix 1, wherein the matrix is a hollow step cylinder with a large middle diameter and small two ends, the middle is high, the two ends are small, brazing abrasive particle positions are fixed in the middle, and the diameter of a step surface is 0.5-3.0mm larger than that of two ends. And (3) brazing two or more layers of concentric surface cutting unit annular columns on the circumferential surface of the step in the middle of the matrix to form a matrix working layer 2, wherein the concentric surface cutting unit annular columns 25 are made of abrasive particles 21 embedded into a welding layer 22. Each layer of concentric surface cutting unit annular columns is uniformly provided with a single layer of abrasive particles 21. The spacing between adjacent abrasive particles of the annular columns of the concentric surface cutting unit on the surface of the matrix is 0.0-1.0mm. The abrasive particles of the annular columns of the adjacent two layers of concentric surface cutting units are staggered, namely, the center points of the projection positions of the abrasive particles on the circumferential surfaces are not overlapped.
The manufacturing method of the multi-layer abrasive brazing bead comprises the following working procedures that a matrix is a hollow step cylinder with a large middle diameter and two small ends: 1) Embedding abrasive particles 21 into a solder layer 22 to prepare a solder sheet inlaid with abrasive particles, namely an unfolding surface of a concentric surface cutting unit ring column; 2) Cutting out a corresponding area of the welding material layer inlaid with abrasive particles according to the area of the concentric surface cutting unit ring column designed on the surface of the substrate, and wrapping the welding material layer inlaid with abrasive particles on the substrate to form a concentric surface cutting unit ring column 25; 3) Then sequentially wrapping the base body layer by layer in a staggered manner of the abrasive particles of the adjacent layers, and mutually staggering the joints of the adjacent layers to form a bead blank; 4) Heating the bead blank in a vacuum furnace to enable the solder layers, the solder and the abrasive material to have metallurgical bonding reaction, and obtaining a brazing bead finished product. The solder layer is a mesh-shaped welding wire or a welding sheet. The diameter of the hole 23 reserved on the solder layer 2 for embedding the abrasive particles is 0.5-0.9 times of the diameter of the abrasive particles. The abrasive particles are embedded into preformed holes of the mesh or sheet solder, and the thickness of the solder layer is 0.5-0.8 times of the diameter of the abrasive particles.
2-4, the base 1 is a hollow stepped cylinder of 45# in total length of 10.00mm, a central through hole phi of 4.00mm, outer diameters phi of two end circumferential surfaces phi of 5.50mm, each length of 2.00mm, and an outer diameter phi of a middle stepped surface of 6.00mm and a length of 6.00mm, and is used for brazing diamond concentric surface cutting unit annular columns. The grain diameter of the diamond is 35/40 (grain diameter phi 0.425-0.50 mm), and the double-layer cloth is formed. Using Ag 72 Cu 28 Ti silver-based soldering lug, thickness of the soldering lug is 0.25mm, punching diameter is 0.35mm, the soldering lugs are distributed in rectangular array, center distance between adjacent holes is 1.00mm, and first layer of soldering is performedThe sheet boundary dimension was 19.50mm long and 6.00mm wide, and the second layer tab boundary dimension was 22.70mm long and 6.00mm wide. The diamond abrasive particles are pressed and embedded into corresponding holes, the diamond abrasive particles are sequentially wrapped on a substrate with phi of 6.00mm, the diameter of the outer circle of a first layer of welding layer is about phi of 6.40mm, the outer diameter of a second layer of welding layer is about phi of 7.20mm, the center points of two layers of adjacent abrasive particles are not on the same line in the radial direction in a mode of dislocation of the annular column abrasive particles of adjacent concentric surface cutting units, the diamond abrasive particles are sequentially wrapped on the substrate layer by layer, namely joints of the first layer and the second layer are staggered at the joint surface to form a double-layer diamond brazing bead blank, and the double-layer diamond brazing bead blank is integrally placed in a quartz tube with the inner diameter phi of 7.50mm to prevent the separation of a welding material layer and the substrate. And (3) placing the blank body into a vacuum furnace, vacuumizing to be lower than 10E-2Pa, heating to 925 ℃ at a speed of 15 ℃/min, preserving heat for 20min, cooling to be lower than 100 ℃ along with the furnace, and discharging to obtain the double-layer brazing diamond bead.
In example 2, as shown in FIGS. 2, 3 and 5, the base 1 is a hollow stepped cylinder of 45# and has an overall length of 11mm, a central through hole phi of 5.30mm, outer diameters phi of both end circumferential surfaces phi of 7.00mm, a length of 2.50mm, an outer diameter phi of an intermediate stepped surface phi of 10.0mm and a length of 6mm. The grain diameter of the diamond is 35/40 (grain diameter phi 0.425-0.50 mm), and the double-layer cloth is formed. The first layer adopts Ag72Cu28Ti silver-based welding wires, the diameter of the welding wires is 0.3mm, the inscribed circle diameter of the braided cross hole is 0.38mm, and the boundary size of the welding layer is 32.20mm long; the second layer adopts Ag 72 Cu 28 Ti silver-based soldering lug, thickness 0.4mm, rectangular array distribution, trompil 0.38mm, the centre-to-centre spacing of adjacent hole is 0.96mm, and welding layer boundary size is 34.30mm, presses diamond abrasive grain embedding in corresponding hole, and the coating is in proper order wrapped up in on phi 7.00 mm's base member, and first layer welding layer external diameter 10.25mm, second layer welding layer external diameter 10.90mm forms double-deck diamond and welds string of beads blank, wholly puts into the quartz glass pipe that internal diameter is 11.2 mm. After that, the mixture was put in a vacuum furnace for brazing, and the other undescribed portions were the same as in example 1.
Claims (5)
1. The utility model provides a multilayer abrasive material brazing bead, bead comprises matrix working layer (2) and base member (1), its characterized in that: the matrix is a hollow step cylinder with large middle diameter and small two ends, two or more than two layers of concentric surface cutting unit annular columns (25) are brazed on the circumferential surface of the step in the middle of the matrix to form a matrix working layer (2), single-layer abrasive grains (21) are uniformly distributed on each layer of concentric surface cutting unit annular column, the concentric surface cutting unit annular columns (25) are made by embedding abrasive grains (21) into a welding layer (22), the abrasive grains of two adjacent layers of concentric surface cutting unit annular columns are staggered, namely, the center points of the projection positions of the abrasive grains on the circumferential surface are not overlapped, and the production of the multi-layer abrasive brazing bead comprises the following working procedures: 1) The solder layer is provided with uniform holes, the diameters of the holes are 0.5-0.9 times of the diameters of the abrasive particles, the holes are used for embedding the abrasive particles, and the abrasive particles (21) are embedded into the solder layer (22) to prepare the unfolding surface of the concentric surface cutting unit ring column; 2) Cutting a welding material layer inlaid with abrasive particles in a corresponding area according to the area of the concentric surface cutting unit ring column designed on the surface of the matrix;
3) Then sequentially wrapping the base body layer by layer in a staggered manner of abrasive particles of adjacent layers, and staggering joints of the adjacent layers to form a bead blank; 4) Heating the bead blank in a vacuum furnace to make the solder layer and layer, solder and abrasive material and matrix produce metallurgical bonding reaction so as to obtain the invented soldering bead product.
2. A multi-layered abrasive braze bead according to claim 1, wherein: the spacing between adjacent abrasive particles of the single-layer concentric surface cutting unit ring column on the surface of the matrix is 0.0-1.0mm.
3. A multi-layered abrasive braze bead according to claim 1, wherein: the diameter of the step surface of the brazing abrasive particle part is 0.5-3.0mm larger than the diameter of the two ends.
4. A multi-layered abrasive braze bead according to claim 1, wherein: the solder layer is a mesh-shaped welding wire or a welding sheet.
5. A multi-layered abrasive braze bead according to claim 1, wherein: the abrasive particles are embedded into preformed holes of the mesh or sheet solder, and the thickness of the solder layer is 0.5-0.8 times of the diameter of the abrasive particles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710670412.XA CN107262825B (en) | 2017-08-08 | 2017-08-08 | Multi-layer abrasive brazing bead and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710670412.XA CN107262825B (en) | 2017-08-08 | 2017-08-08 | Multi-layer abrasive brazing bead and manufacturing method thereof |
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| CN107262825A CN107262825A (en) | 2017-10-20 |
| CN107262825B true CN107262825B (en) | 2023-06-27 |
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| CN111822786B (en) * | 2020-06-15 | 2024-04-05 | 广东奔朗新材料股份有限公司 | Manufacturing method of brazing bead with uniformly distributed abrasive particles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040112359A1 (en) * | 1997-04-04 | 2004-06-17 | Chien-Min Sung | Brazed diamond tools and methods for making the same |
| BE1016679A5 (en) * | 2004-07-16 | 2007-04-03 | Ehwa Diamond Ind Co Ltd | Bead for wire saw, includes at least one groove formed at peripheral surface of shank main body and filled with metallic-bond material to form metallic-bond material layer |
| KR101509852B1 (en) * | 2008-12-18 | 2015-04-06 | 신닛테츠스미킨 카부시키카이샤 | Saw wire and method of manufacturing saw wire |
| EP2495062A1 (en) * | 2011-03-04 | 2012-09-05 | NV Bekaert SA | Sawing Bead |
| CN102975292A (en) * | 2011-09-07 | 2013-03-20 | 福建万龙金刚石工具有限公司 | Multi-layer soldering diamond string bead |
| CN207154897U (en) * | 2017-08-08 | 2018-03-30 | 福州天石源超硬材料工具有限公司 | A kind of multilayer abrasive material brazing bead |
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Address after: No. 6, Nanxing Road, Minhou Economic and Technological Development Zone, Fuzhou City, Fujian Province, 350100 Patentee after: Fujian Tianshiyuan Technology Co.,Ltd. Address before: No. 6, Nanxing Road, Minhou Economic and Technological Development Zone, Fuzhou City, Fujian Province, 350100 Patentee before: FUZHOU SKYSTONE DIAMOND TOOL Co.,Ltd. |
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