CN114101794B - Laser welding saw blade - Google Patents
Laser welding saw blade Download PDFInfo
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- CN114101794B CN114101794B CN202010899865.1A CN202010899865A CN114101794B CN 114101794 B CN114101794 B CN 114101794B CN 202010899865 A CN202010899865 A CN 202010899865A CN 114101794 B CN114101794 B CN 114101794B
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- 238000003466 welding Methods 0.000 title claims abstract description 96
- 239000010432 diamond Substances 0.000 claims abstract description 145
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 145
- 239000002245 particle Substances 0.000 claims abstract description 68
- 239000011159 matrix material Substances 0.000 claims abstract description 59
- 238000005219 brazing Methods 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000005245 sintering Methods 0.000 claims abstract description 32
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000007767 bonding agent Substances 0.000 claims abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 78
- 229910052759 nickel Inorganic materials 0.000 claims description 34
- 239000011230 binding agent Substances 0.000 claims description 28
- 239000000945 filler Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002966 varnish Substances 0.000 claims description 3
- 229910001149 41xx steel Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 238000013329 compounding Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 235000013619 trace mineral Nutrition 0.000 description 6
- 239000011573 trace mineral Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 239000010438 granite Substances 0.000 description 3
- 235000019580 granularity Nutrition 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- 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
- B23D61/02—Circular saw blades
- B23D61/04—Circular saw blades with inserted saw teeth, i.e. the teeth being individually inserted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/002—Tools other than cutting tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a laser welding saw blade, and belongs to the technical field of preparation of material cutting and processing tools. The laser welding saw blade comprises a saw blade substrate and a plurality of diamond tool bits uniformly distributed on the outer edge of the saw blade substrate, and a mounting hole is formed in the center of the saw blade substrate; the diamond cutter head consists of an inner cutter head matrix and an outer cutter head brazing layer; two sides of each diamond tool bit are respectively provided with 1 concave notch groove along the radial direction of the saw blade matrix, so that chip removal during cutting processing is facilitated. The diamond bit of the saw blade is formed by brazing and sintering metal bonding agents and diamond particles under a vacuum condition. And then welding the diamond tool bit and the matrix of the saw blade by adopting a laser welding method. The laser welding saw blade has the advantages of firm combination between diamond particles and the tool bit matrix, reliable connection between the tool bit and the saw blade matrix, simple process and low cost.
Description
Technical Field
The invention relates to the technical field of preparation of material cutting processing tools, in particular to a laser welding saw blade which is used for cutting processing of metal materials such as steel bars and steel plates and nonmetallic materials such as cement, concrete, granite, wall and floor tiles and the like.
Background
In the current market, diamond saw blades are widely applied to cutting processing, polishing and trimming processing of metal materials such as steel bars and steel plates and nonmetallic materials such as cement, concrete, granite, wall and floor tiles and the like. The production cost of the product is reduced, and during cutting, the cutting efficiency of the product is continuously improved, the cutting sharpness and the service life of the saw blade are improved, the material loss is reduced, the cutting safety is ensured, and the like are all the targets pursued in the field. The laser welding diamond saw blade consists of two parts: a tool bit with diamond particles and a saw blade matrix. When the tool bit with diamond particles is connected with the saw blade matrix, if the conventional welding method is adopted for welding, the diamond particles on the tool bit are easy to be carbonized and burnt due to large heating area and high temperature, so that the service performance of the saw blade is reduced. In addition, the conventional welding method is not high enough in welding efficiency, resulting in an increase in the production cost of the saw blade. On the other hand, when the cutter head of the conventional saw blade is used for cutting, the sharpness of the cutter head is not good enough, and the bonding strength between diamond particles and a cutter head matrix is not high, so that the diamond particles are easy to fall off, and the service life of the saw blade is not high enough. Therefore, diamond particles with high hardness and sharpness are selected, and the saw blade bit is reasonably designed, and matched nickel-based brazing filler metal binding agents are adopted for vacuum brazing sintering, so that the bonding strength between the diamond particles and a bit matrix is improved. The diamond cutter head is firmly connected with the saw blade matrix by adopting a laser welding technology, so that the prepared laser welding diamond saw blade can remarkably improve the cutting quality of products and the service life of the saw blade while greatly improving the production efficiency of the diamond saw blade.
Disclosure of Invention
In order to solve the main problems in the existing products and the preparation technology thereof, the invention aims to provide a laser welding saw blade.
In order to solve the technical problems and achieve the purposes of the invention, the invention adopts the following technical scheme:
a laser welding saw blade comprises a saw blade substrate and a plurality of diamond tool bits uniformly distributed on the outer edge of the saw blade substrate, wherein the center of the saw blade substrate is provided with a mounting hole, and a positioning small hole is arranged near the mounting hole; the diamond cutter head consists of an inner cutter head matrix and an outer cutter head brazing layer; two sides of each diamond tool bit are respectively provided with 1 concave notch groove along the radial direction of the saw blade matrix, so that chip removal during cutting processing is facilitated.
The saw blade substrate is a circular substrate with the outer circle diameter phi of 320mm, the thickness of the saw blade substrate is 2.2mm, and the diameter phi of a mounting hole in the center of the substrate is 25.4mm; the average length of the diamond tool bit in the circumferential direction is 40mm, the radial width is 15mm, and the width of the outer brazing layer is 5mm and the thickness is 3.2mm. And 3 small holes are uniformly distributed on each diamond tool bit, and 4 notches are uniformly distributed on the outermost side of each diamond tool bit along the radial direction.
The saw blade substrate is made of 30CrMo, and the cutter head substrate is made of 65Mn or 30 CrMo; the tool bit braze layer of diamond tool bit comprises diamond particles and metal bond, wherein: the concentration of the diamond particles is 0.55-0.75 ct/cm 3, and the metal bonding agent is nickel-based brazing filler metal.
The bit braze layer of the diamond bit comprises the following components in percentage by weight: the diamond particles with the granularity of 35/40 are 45 percent, the diamond particles with the granularity of 40/50 are 30 percent, and the nickel-based brazing filler metal accounts for 25 percent.
The nickel-based brazing filler metal comprises the following components in percentage by weight: 8-10% of Cr, 4-7% of Si, 2-6% of B, 3-5% of Fe and the balance of Ni.
The preparation method of the laser welding saw blade comprises the following steps:
1) And (3) batching: selecting proper nickel-based brazing filler metal as a metal binding agent according to the component proportion, adding diamond particles, and mixing by adopting a three-dimensional mixer for 50min to obtain a brazing layer forming material of the diamond tool bit;
2) Cold pressing: adjusting a tool die, firstly placing a tool bit matrix, then putting a brazing layer forming material, and assembling the tool bit matrix into a cold-pressing forming die to obtain a diamond tool bit blank through pressure forming;
3) Vacuum sintering: placing the diamond tool bit blank into a die, and heating and sintering under vacuum conditions to obtain a diamond tool bit;
4) Laser welding: removing burrs and grinding arcs from the sintered diamond tool bit; then, carrying out laser welding on laser welding equipment to connect the diamond tool bit with the saw blade matrix;
5) Polishing varnish: and (3) polishing the surface of the saw blade subjected to laser welding, and then carrying out surface paint spraying protection treatment.
In the step (3), the sintering temperature is 1010-1030 ℃, the sintering time is 0.5-2h, and the vacuum degree is 4.0X10 -4 Pa.
In the step (4), the laser power during laser welding was 1.5kW, and the welding time was 2 min/piece.
Compared with the closest prior art, the laser welding saw blade has the following beneficial effects:
The laser welding saw blade has the advantages of firm combination between diamond particles and the blade matrix, reliable connection between the diamond blade and the blade matrix, simple process, low production cost, good cutting sharpness, narrow cutting slit, small cutting deflection, tidy trimming, high cutting efficiency, good cutting safety and the like, and is suitable for cutting, polishing and trimming metallic materials such as steel bars, steel plates and the like and nonmetallic materials such as cement, concrete, granite, wall and floor tiles and the like.
Drawings
Fig. 1 is a schematic view of the overall structure of a laser welding saw blade according to the present invention.
Fig. 2 is a schematic view of a part of the laser welding saw blade according to the present invention.
Fig. 3 is a finished view of the laser welding saw blade of the present invention.
Fig. 4 is a diamond tip in a laser welding saw blade according to the present invention.
Fig. 5 is an enlarged view of a finished part of the laser welding saw blade of the present invention.
In the figure: 1-a saw blade substrate; 2-mounting holes; 3-concave notch groove; 4-diamond tips; 401-a cutter head base; 402-bit braze layer.
Detailed Description
The laser welding saw blade according to the present invention will be further described with reference to specific examples to help those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solution of the present invention; it should be noted that the description of the structure, function, material, etc. in the embodiments is illustrative, and is not meant to limit the scope of the invention.
As shown in fig. 1-2, the outer diameter Φ of the laser welding saw blade of the present invention is 350mm. 24 diamond tool bits 4 with diamond particles are welded on each saw blade by adopting a laser welding method, the center of the saw blade is provided with a mounting hole 2, and a small positioning hole is arranged nearby. The saw blade matrix 1 is a circular matrix with the outer circle diameter phi of 320mm, the thickness of the matrix is 2.2mm, and the diameter phi of a mounting hole in the center of the matrix is 25.4mm. Two sides of each diamond tool bit 4 are respectively provided with 1 concave notch groove 3 along the radial direction of the saw blade matrix, so that chip removal during cutting processing is facilitated. The diamond tip dimensions were 40mm in circumferential average length, 15mm in radial width (with a tip braze layer 402 width of 5 mm), and a tip braze layer 402 thickness of 3.2mm. Each diamond cutter head is provided with 3 small holes which are uniformly distributed, and 4 notches which are uniformly distributed along the radial outermost side. The small holes and notches in the diamond tip act primarily to cool and remove chips during the cutting process. The diamond-particle-containing brazing layer is firmly welded to the bit body 401 in the circumferential direction by a vacuum brazing sintering process, and then the diamond bit and the blade body are welded together by a laser welding process to form a diamond saw blade (fig. 3). According to the size of the saw blade, the materials to be cut and the like, the saw blade matrix structure can be designed into different diameter specifications according to the requirements, and the laser welding saw blade with other specifications and dimensions can be produced by matching the corresponding number of diamond tool bits. As can be seen from fig. 4, the diamond particles are firmly bonded with the tool bit substrate, and no brazing defects such as air holes, cracks and the like are found, so that the diamond particles are in a metallurgical bonding state with each other, and the bonding strength between the hard diamond particles and the tool bit substrate is improved. It can be seen from fig. 5 that the laser welding process is adopted to weld the diamond tool bit and the saw blade matrix together, the welding heat affected zone is narrow, the heat influence of the tool bit part is very small, the connection between the diamond tool bit and the saw blade matrix is firm, and the diamond particles on the tool bit can be prevented from being carbonized and falling off, so that the cutting efficiency and the service life of the saw blade are reduced.
In the invention, the brazing layer of the diamond tool bit is formed by heating and sintering a nickel-based brazing filler metal binding agent and diamond particles. The heating and sintering are performed under vacuum conditions, the sintering temperature is 1010-1030 ℃, and the vacuum degree is 4.0X10 -4 Pa. Wherein, the ingredients of the diamond particles and the metal binding agent are as follows: the concentration of the diamond particles is 0.55-0.75 ct/cm 3, the diamond particles with different granularities and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. Wherein, the matrix of the diamond tool bit is 65Mn material or 30CrMo material, the components of the nickel-based brazing filler metal binding agent are as follows in weight percent (wt%): 8-10% of Cr, 4-7% of Si, 2-6% of B, 3-5% of Fe and the balance of Ni.
The specific preparation process of the laser welding saw blade provided by the invention comprises the following steps:
1) And (3) batching: selecting a proper nickel-based brazing filler metal binding agent according to the component proportion, adding diamond particles, and premixing to prepare the molding material. Mixing materials by a three-dimensional mixer for 50min to obtain a formed material;
2) Cold pressing: adjusting a tool die, firstly loading a tool bit matrix, then putting a molding material, assembling the molding material into a cold-pressing molding die, and performing compression molding to obtain a diamond tool bit blank;
3) Vacuum sintering: placing the diamond tool bit blank into a die, and heating and sintering under vacuum condition, wherein the sintering temperature is 1010-1030 ℃ and the vacuum degree is 4.0X10 -4 Pa;
4) Laser welding: the brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and then carrying out laser welding on laser welding equipment to connect the diamond tool bit with the saw blade matrix. The saw blade matrix is made of 30CrMo material. The laser power during laser welding is 1.5kW, and the welding time is 2 min/piece;
5) Polishing varnish: polishing the surface of the saw blade subjected to laser welding, and then performing surface paint spraying protection treatment;
6) And (3) checking and packaging: and checking the appearance and the size of the prepared saw blade, the combination condition of a laser welding area, diamond particles and a cutter head matrix and the like according to the design requirements of a product drawing, and packaging and warehousing according to the requirements after the saw blade is qualified.
Comparative example 1
In this example, the saw blade tip of the laser welding saw blade is formed by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, wherein the sintering temperature is 1020 ℃, and the vacuum degree is 4.0X10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 77.5% of Ni, 9.5% of Cr, 4.5% of Si, 4.5% of B and 4.0% of Fe. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.50ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 1
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the saw blade of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1020 ℃, and the vacuum degree is 4.0x10 -3 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 78.0% of Ni, 9.5% of Cr, 5.5% of Si, 3.5% of B, 3.5% of Fe and the balance of trace elements. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.60ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 2
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the diamond tool bit of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1020 ℃, and the vacuum degree is 4.0x10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 80.0% of Ni, 8.5% of Cr, 4.5% of Si, 3.5% of B, 3.5% of Fe and the balance of trace elements. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.65ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 3
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the diamond tool bit of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1010 ℃, and the vacuum degree is 4.0x10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight percent (wt%) Ni 81.0%, cr 8.0%, si 4.5%, B3.5%, fe 3.0% and trace elements in balance. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.65ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 4
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the diamond tool bit of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1030 ℃, and the vacuum degree is 4.0x10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 80.0% of Ni, 8.5% of Cr, 5.0% of Si, 3.5% of B, 3.0% of Fe and the balance of trace elements. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.65ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 5
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the diamond tool bit of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1020 ℃, and the vacuum degree is 4.0x10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 79.0% of Ni, 9.0% of Cr, 5.5% of Si, 3.0% of B, 3.5% of Fe and the balance of trace elements. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.70ct/cm 3, and the diamond particles with different particle sizes and the proportion thereof are respectively as follows: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
Example 6
In this embodiment, the laser welding saw blade is manufactured by the method of the present invention, specifically, the diamond tool bit of this embodiment is manufactured by heating and sintering a nickel-based brazing filler metal binder and diamond particles under a vacuum condition, and the sintering temperature is 1020 ℃, and the vacuum degree is 4.0x10 -4 Pa. Wherein, the matrix of diamond tool bit is 30CrMo material. The nickel-based brazing filler metal binding agent comprises, by weight, 78.0% of Ni, 9.5% of Cr, 5.0% of Si, 4.0% of B, 3.5% of Fe and the balance of trace elements. Compounding of diamond particles and metal binding agent: the concentration of the diamond particles is 0.75ct/cm 3 in terms of weight percent (wt%) and the diamond particles with different particle sizes and the proportion thereof are respectively: 45% of 35/40, 30% of 40/50 and 25% of nickel base material. The brazed and sintered diamond tool bit is subjected to deburring and arc grinding; and (3) carrying out laser welding on laser welding equipment to connect the diamond tool bit with a saw blade matrix, wherein the saw blade matrix is made of 30CrMo material. The laser power during laser welding was 1.5kW and the welding time was 2 min/piece.
The comparative example 1 and the laser welding saw blades prepared in examples 1 to 6 are shown in table 1 with respect to cutting efficiency and cutting life performance.
For comparison, reinforced concrete of the same material was cut, and the cutting efficiency and the cutting life of the laser welding saw blade in other examples 1 to 6 were shown in table 1 with respect to the cutting efficiency and the cutting life thereof obtained in comparative example 1 as a reference (i.e., each labeled 1) under the same rotation speed and the like.
It will be apparent to those skilled in the art that the present invention has been described in detail by way of illustration only, and it is not intended to be limited by the above-described embodiments, but is to be construed as limited by the appended claims, if they are not intended to be limited to the details of the method concepts and embodiments of the invention.
TABLE 1
| Cutting efficiency ratio | Cut life ratio | |
| Comparative example 1 | 1 | 1 |
| Example 1 | 1.54 | 1.46 |
| Example 2 | 1.62 | 1.53 |
| Example 3 | 1.48 | 1.45 |
| Example 4 | 1.51 | 1.38 |
| Example 5 | 1.52 | 1.50 |
| Example 6 | 1.69 | 1.36 |
Claims (3)
1. A laser welding saw blade, characterized in that: the laser welding saw blade comprises a saw blade substrate and a plurality of diamond tool bits uniformly distributed on the outer edge of the saw blade substrate, wherein the center of the saw blade substrate is provided with a mounting hole, and a positioning small hole is formed near the mounting hole; the diamond cutter head consists of an inner cutter head matrix and an outer cutter head brazing layer; two sides of each diamond tool bit are respectively provided with 1 concave notch groove along the radial direction of the saw blade matrix so as to facilitate chip removal during cutting processing;
3 small holes are uniformly distributed on each diamond tool bit, and 4 notches are uniformly distributed on the outermost side of each diamond tool bit along the radial direction;
the saw blade substrate is made of 30CrMo, and the cutter head substrate is made of 65Mn or 30 CrMo; the tool bit braze layer of diamond tool bit comprises diamond particles and metal bond, wherein: the concentration of the diamond particles is 0.55-0.75 ct/cm 3, and the metal bonding agent is nickel-based brazing filler metal;
The bit braze layer of the diamond bit comprises the following components in percentage by weight: the diamond particles with the granularity of 35/40 are 45 percent, the diamond particles with the granularity of 40/50 are 30 percent, and the nickel-based brazing filler metal accounts for 25 percent;
The nickel-based brazing filler metal comprises the following components in percentage by weight: 8-10% of Cr, 4-7% of Si, 2-6% of B, 3-5% of Fe and the balance of Ni;
The diamond tool bit is prepared by vacuum sintering after cold pressing the tool bit matrix and the tool bit brazing layer into a whole, wherein the sintering temperature is 1010-1030 ℃, the sintering time is 0.5-2h, and the vacuum degree is 4.0X10 -4 Pa;
The diamond tool bit and the saw blade matrix are connected together by adopting laser welding, the laser power during laser welding is 1.5kW, and the welding time is 2 min/piece.
2. The laser welding saw blade of claim 1, wherein: the saw blade substrate is a circular substrate with the outer circle diameter phi of 320mm, the thickness of the saw blade substrate is 2.2mm, and the diameter phi of a mounting hole in the center of the substrate is 25.4mm; the average length of the diamond tool bit in the circumferential direction is 40mm, the radial width is 15mm, and the width of the outer brazing layer is 5mm and the thickness is 3.2mm.
3. The laser welding saw blade according to claim 1 or 2, wherein: the preparation method of the laser welding saw blade specifically comprises the following steps:
1) And (3) batching: selecting proper nickel-based brazing filler metal as a metal binding agent according to the component proportion, adding diamond particles, and mixing by adopting a three-dimensional mixer for 50min to obtain a brazing layer forming material of the diamond tool bit;
2) Cold pressing: adjusting a tool die, firstly placing a tool bit matrix, then putting a brazing layer forming material, and assembling the tool bit matrix into a cold-pressing forming die to obtain a diamond tool bit blank through pressure forming;
3) Vacuum sintering: placing the diamond tool bit blank into a die, and heating and sintering under vacuum conditions to obtain a diamond tool bit;
4) Laser welding: removing burrs and grinding arcs from the sintered diamond tool bit; then, carrying out laser welding on laser welding equipment to connect the diamond tool bit with the saw blade matrix;
5) Polishing varnish: polishing the surface of the saw blade subjected to laser welding, and then performing surface paint spraying protection treatment;
6) And (3) checking and packaging: and (3) checking the appearance and the size of the prepared saw blade, the combination condition of a laser welding area, diamond particles and a tool bit matrix and the like according to the requirements of a product design drawing, and packaging and warehousing according to the requirements after the saw blade is qualified.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202317264U (en) * | 2011-11-04 | 2012-07-11 | 江苏华昌工具制造有限公司 | Wind power razing saw blade |
| CN110039662A (en) * | 2019-04-12 | 2019-07-23 | 河北小蜜蜂工具集团有限公司 | A kind of production method for the diamond saw blade cutting calcium silicate board |
| CN110948706A (en) * | 2019-11-21 | 2020-04-03 | 江苏华昌工具制造有限公司 | Tooth-protecting diamond saw blade and laser welding preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100623304B1 (en) * | 2005-04-14 | 2006-09-13 | 이화다이아몬드공업 주식회사 | Cutting tip, manufacturing method and cutting tool |
| CN101036945A (en) * | 2006-03-14 | 2007-09-19 | 中南大学 | Method for preparing saw blades suitable for Asia red stone material |
| CN101357428A (en) * | 2008-07-24 | 2009-02-04 | 泉州众志金刚石工具有限公司 | Metal cement diamond tool for preparing ultrathin saw blade diamond tool-bit |
| CN102319934B (en) * | 2011-07-29 | 2013-04-03 | 江苏华昌工具制造有限公司 | Brazing process of diamond saw blade |
| CN106270776A (en) * | 2015-06-02 | 2017-01-04 | 江苏友和工具有限公司 | A kind of hybrid metal slim diamond blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202317264U (en) * | 2011-11-04 | 2012-07-11 | 江苏华昌工具制造有限公司 | Wind power razing saw blade |
| CN110039662A (en) * | 2019-04-12 | 2019-07-23 | 河北小蜜蜂工具集团有限公司 | A kind of production method for the diamond saw blade cutting calcium silicate board |
| CN110948706A (en) * | 2019-11-21 | 2020-04-03 | 江苏华昌工具制造有限公司 | Tooth-protecting diamond saw blade and laser welding preparation process thereof |
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