CN113043178A - Brazing diamond grinding and polishing sheet and preparation process thereof - Google Patents
Brazing diamond grinding and polishing sheet and preparation process thereof Download PDFInfo
- Publication number
- CN113043178A CN113043178A CN202110285894.3A CN202110285894A CN113043178A CN 113043178 A CN113043178 A CN 113043178A CN 202110285894 A CN202110285894 A CN 202110285894A CN 113043178 A CN113043178 A CN 113043178A
- Authority
- CN
- China
- Prior art keywords
- diamond
- stainless steel
- solder
- area
- brazing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010432 diamond Substances 0.000 title claims abstract description 206
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 183
- 238000005498 polishing Methods 0.000 title claims abstract description 76
- 238000000227 grinding Methods 0.000 title claims abstract description 57
- 238000005219 brazing Methods 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 74
- 239000010935 stainless steel Substances 0.000 claims abstract description 74
- 229910000679 solder Inorganic materials 0.000 claims abstract description 67
- 239000002245 particle Substances 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 53
- 238000003466 welding Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 37
- 230000001070 adhesive effect Effects 0.000 claims description 37
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 22
- 238000009826 distribution Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- 230000001680 brushing effect Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000003892 spreading Methods 0.000 claims description 9
- 230000007480 spreading Effects 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 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
- 238000013016 damping Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0054—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impressing abrasive powder in a matrix
Abstract
The invention discloses a brazed diamond grinding and polishing sheet and a preparation process thereof. The polishing sheet comprises a welding substrate, diamond particles and an elastic layer, wherein the welding substrate is a stainless steel sheet, the diamond particles are fixed on the upper surface of the substrate through brazing, and the elastic layer is adhered or sprayed on the lower surface of the substrate; the diamond particles are distributed on the surface area of the stainless steel sheet, the diamond particles in the area are firmly brazed, and no solder exists at intervals in the area and no diamond particles exist. The brazing diamond grinding and polishing sheet is prepared by arranging and brazing the diamond regions at intervals on the surface of the stainless steel sheet, so that the grinding and polishing sheet has the advantages of high efficiency and long service life of a brazing diamond grinding material, and also has certain elasticity and flexibility, so that the brazing diamond grinding and polishing sheet not only has better adaptability to the surface of a grinding workpiece, but also can obtain higher grinding surface quality; the invention has simple and stable process, easy preparation and no easy fracture, and has better economic benefit after use.
Description
Technical Field
The invention belongs to the field of manufacturing of superhard abrasive tools, and particularly relates to a brazed diamond grinding and polishing sheet applied to grinding and polishing of material surfaces and a preparation process thereof.
Background
The elastic grinding and polishing sheet mainly refers to grinding sheets with certain flexibility and elasticity, such as a diamond grinding sheet, a diamond grinding and polishing disc and the like, and can be used for performing rough grinding and semi-fine grinding and polishing operations on the surfaces of stones and metals. In general, the elastic polishing disk is made of resin sintered diamond or other super-hard abrasives, but because of the sintering process, the exposure of diamond is low, the holding strength is low, the efficiency is relatively low, and the elastic polishing disk is mainly used for semi-fine polishing.
With the development of industry, the metal surface polishing fields such as hull surface polishing and rust removal, deck paint removal and the like, and the stone processing fields such as stone trimming, surface polishing and the like all face the requirement of high-efficiency polishing, and simultaneously the requirement of polishing surface quality is required to be met.
The conventional diamond tool prepared by the brazing diamond process has the effects of high efficiency, stability and long service life, and particularly has obvious advantages and application in the fields of casting surface cleaning, robot polishing, stone trimming and the like. However, since the brazed diamond tool substrate is mostly a rigid steel substrate, the surface of the brazed diamond tool substrate is kept in a rigid state after welding diamonds, when the brazed diamond tool substrate is ground and polished, the rigidity is too high and the surface is almost inelastic, the ground surface resilience is too high, the diamonds perform vibration type cutting on the surface of the material, the ground surface quality is poor, and even if the diamond particle size is reduced, the ideal surface finish is still difficult to obtain. In particular, for some profiles, a rigid abrasive polishing disk is more difficult to suffice.
Therefore, it is necessary to use a somewhat resilient polishing pad, but due to the manufacturing characteristics of brazed diamond tools, there are currently few reports of resilient polishing pads based on the brazed diamond process. In foreign countries, metal wires and glass fibers are woven in a mixed mode to serve as a substrate, electroplating technology is used for plating diamond on the surface to prepare an electroplated diamond grinding and polishing sheet, the surface of a polishing material can be effectively polished, and the preparation technology is complex, high in cost and difficult to widely apply.
Patent CN 102172897B-a brazed diamond soft grinding disc and its manufacturing method relates to a method for manufacturing soft grinding disc by using brazed diamond process, which uses a net-shaped thin steel sheet as a substrate, welds diamond on the surface, and then compositely welds an elastic layer to obtain the novel soft grinding disc. The process can make the grinding and polishing disk obtain certain elasticity. However, the thin steel sheet substrate still has higher rigidity, if the diamond and the solder layer are integrally distributed on the surface of the thin steel sheet substrate, the welded solder layer and the steel sheet substrate form an integral body, and the brittleness and the elasticity are high, and the fracture is easy to occur. In order to improve the elasticity and the flexibility, the patent cuts the welded grinding layer into small pieces, and then the grinding layer is bonded with the elastic layer, so that the workload is large, and the preparation is relatively difficult. On the other hand, when the soft abrasive disc is adopted, the abrasive material is avoided greatly when contacting workpiece materials, the polishing surface can be better guaranteed to be smooth, but the removal amount is relatively reduced, and the soft abrasive disc is difficult to better deal with when meeting a high-efficiency polishing scene.
Disclosure of Invention
Aiming at the problems that the conventional brazing diamond grinding disc is low in grinding efficiency, and the grinding and polishing sheet is insufficient and uncontrollable in elasticity after diamond brazing, the invention provides the brazing diamond grinding and polishing sheet and the preparation process thereof based on the advantages of a brazing diamond process.
The invention provides a brazed diamond grinding and polishing sheet, which comprises a welding matrix, diamond particles and an elastic layer, wherein the welding matrix is a stainless steel sheet, the diamond particles are fixed on the upper surface of the matrix through brazing, and the elastic layer is adhered or sprayed on the lower surface of the matrix;
the diamond particles are distributed on the surface area of the stainless steel sheet, the diamond particles in the area are firmly brazed, and no solder or diamond particles exist at intervals in the area;
the diamond of a single area distributed on the surface of the stainless steel sheet is in a cluster shape or a sheet shape, and when the diamond area is in the cluster shape, the area of the single diamond area is not more than 1.5cm2(ii) a When the diamond region is in the shape of a sheetWhen the area of the single diamond region is not more than 6cm2；
The thickness of the stainless steel sheet is 0.3-0.8 mm;
the granularity range of the diamond particles is 35-400 meshes;
the width range of the diamond region interval is 1.2 mm-6 mm;
the thickness of the elastic layer is between 1mm and 5 mm;
the spacing range between diamond particles in the diamond region is 0.2-1.0 times of the particle size of the diamond particles, so that solder particles with particle sizes smaller than the range can be filled.
According to the polishing sheet, diamond particles and welding flux are distributed on a specific stainless steel sheet at intervals, no welding flux and diamond particles exist in an interval area, and the rigidity and the elasticity of a diamond polishing sheet after welding are both considered; and the strength, elasticity and polishing performance of the abrasive disc can be controlled by controlling the thickness of the stainless steel sheet, the size of the diamond spacer, the granularity and other parameters so as to adapt to different working conditions.
The stainless steel sheet is made of high-temperature-resistant stainless steel, preferably 304 and 316 stainless steel. The stainless steel material is selected because the stainless steel has better high temperature resistance and can still keep better flexibility after being heated at high temperature; and the stainless steel material has toughness and is easy to bend and not crack when being made into a thin sheet, and is beneficial to preparing a product with a grinding and polishing sheet structure. And the stainless steel material can be well diffused and combined by the brazing solder, has high strength, is not easy to corrode and rust, and is favorable for protecting the strength of the polishing sheet.
The thickness of the stainless steel sheet is 0.3-0.8 mm, preferably 0.35-0.5 mm. As the polishing piece needs certain flexibility and toughness when being polished, the thickness of the stainless steel sheet cannot be too thick as a diamond supporting body, otherwise, the stainless steel sheet is difficult to bend in the polishing process so as to adapt to different surface states, and the too thick base body is difficult to play a role in buffering and damping.
The surface of the stainless steel sheet is welded with diamond particles, and the distribution of the diamond is dispersed in regions. The distribution of diamonds must be regionally distributed because the regionally distributed distribution ensures a discrete distribution of diamonds without a surface being connected, and the discretely distributed diamonds can change with changes in the shape of the substrate surface as the disc is flexed.
The spacing of the dispersed diamond regions of the present invention is a bare stainless steel matrix with no solder and no diamond particle distribution. The nickel-based alloy solder or other solders which can generate chemical metallurgical bonding reaction with the diamond can form a unified whole with the substrate and the diamond after the surface of the stainless steel sheet is melted. If the solder is still distributed in the interval of the dispersed diamond areas, the solder is integrated into a whole, and the rigidity is overlarge. In addition, the solder has high hardness and high brittleness, and can be broken in a bending deformation scene, even the softer copper-based alloy solder is not an exception, so that the interval of the diamond region cannot have the solder in order to ensure that the surface of the polishing sheet is not broken during processing. Where there is no solder, diamond cannot be soldered naturally, and there is no attachment of diamond.
The diamond region of the invention exists in a cluster shape or a sheet shape, and when the diamond region is in the cluster shape, the area of the single diamond region does not exceed 1.5cm2(ii) a When the diamond region is in the shape of a sheet, the area of the single diamond region is not more than 6cm2(ii) a The diamond region has a certain area requirement because the area is too large, the bending resistance requirement of the solder surface is high, and the solder crack is easily caused when the substrate is bent and deformed, thereby affecting the welding holding performance.
In particular, the shape of the diamond region is a simple geometric figure, including a circle, a triangle, a quadrangle, etc., and the shape and size of the diamond region may be the same or different on the same product surface.
The granularity range of the diamond particles is 35-400 meshes. According to the processing requirements, the diamond granularity can be applied to the scene under general conditions, the application range of the traditional brazing diamond grinding and polishing sheet is expanded, and the grinding and polishing sheet can be applied to high-efficiency grinding and removing of residual height on the surface of the special-shaped piece.
The width range of the diamond region interval is 1.2 mm-6 mm. According to the grinding working condition and precision requirement, the spacing range can not be too small under general conditions, the too small spacing range can cause adjacent solder to dip and connect, the separation effect is influenced, and the stainless steel substrate surface can be rubbed when grinding at too wide spacing.
The elastic layer is preferably made of rubber, and is bonded by high-strength glue, so that the bonding strength can resist the high temperature of 220 ℃; the elastic layer can be combined with the stainless steel sheet substrate through a vulcanization process; the elastic layer can also be adhered by a spraying mode, and the spraying material is elastic paint.
The preparation process of the brazing diamond grinding and polishing sheet comprises the following steps:
(1) cleaning: firstly, cleaning the upper surface and the lower surface of a stainless steel substrate by using acetone;
(2) brushing a binder: brushing and coating an adhesive I on the upper surface of a stainless steel substrate, wherein the adhesive I is an oily pressure-sensitive adhesive and acetone according to a volume ratio of 1: 2-1: 5, preparation; the thickness of the adhesive coated by the brush is 0.04-0.15 mm;
(3) pasting a template: the template is in a shape designed to be printed according to requirements, a plurality of holes are arranged on the template, and the space between the holes is the space between the designed diamond regions; the size of the interval can be equal or different, and the interval is changed according to the processing working condition, but the size width of the interval needs to be within the required range of 1.2 mm-6 mm; attaching the designed template to one surface of a stainless steel substrate coated with a binder;
the shape of the hole in the template in the step (3) is the shape of a designed diamond area, the shape of the diamond area has no requirement, and the diamond area can be in various structures such as a circle, an equilateral polygon, a special shape and the like;
(4) diamond distribution: the diamond distribution can be manual distribution or machine distribution, and because the diamonds are distributed in regions, the distribution density is not particularly strict, but certain space is required to be reserved among single diamonds in the diamond regions instead of tight contact; the place covered by the template is the interval of the diamond area, and the diamonds cannot be arranged;
(5) spreading solder: certain intervals are reserved between the diamond in the diamond area, and the intervals of the diamond can be filled up by the solder; similarly, the place covered by the template is the interval of the diamond area, and the solder cannot be arranged;
(6) removing the template: at the moment, the template is also bonded with the adhesive and the solder alloy, and after the template is removed, the stainless steel substrate below the template is exposed to meet the design requirement;
(7) vacuum brazing: carrying out vacuum brazing in a vacuum furnace at the highest temperature of 1022-1035 ℃, and keeping the temperature for 8-35 minutes;
(8) the back is provided with an elastic layer: the elastic layer is bonded or sprayed on the lower surface of the stainless steel substrate through the inorganic adhesive, the diamonds on the surface of the diamond polishing sheet are firmly welded after welding, the surface of the stainless steel at the separated positions is exposed, the whole polishing sheet substrate has certain flexibility under the condition of keeping high control on the diamonds, and at the moment, the elastic layer is bonded on the back of the polishing sheet substrate to play a role in buffering better.
The operations of steps (5-1) to (5-3) are required to be performed between step (5) and step (6):
in general, if the solder meets the requirement of matching diamond welding according to the dosage, the steps (5-1) to (5-3) are not needed; if the diamond particles are large and are densely arranged, and the required welding flux amount cannot be achieved by only spraying and filling the gaps once, the steps (5-1) - (5-3) are required;
(5-1) dropping or spraying thin glue: after the solder is spread in the step (5), continuously spraying the adhesive II on the surface to wet the surface, wherein the spraying mode is to ensure the uniformity of the adhesive on the surface, and the adhesive can be dripped by a dropper; the adhesive II is an oily pressure-sensitive adhesive and acetone according to the volume ratio of 1: 5-1: 10, preparing the mixture by the method of the preparation,
(5-2) spreading solder: alloy solder is distributed, at the moment, the whole surface of the polishing piece is provided with the thin adhesive, so that the surface is adhered with a layer of alloy solder, and the welding solder is distributed, so that the bonding strength with the thin adhesive is not too high, and partial particles can be easily brushed away by tools such as a brush and the like;
(5-3) leveling the solder: the solder on the surface of the polishing sheet is brushed to remove the redundant solder particles adhered on the surface, so that the dosage of the solder in the diamond area can be ensured to be matched without being excessive.
According to the brazing diamond grinding and polishing sheet, the brazing diamond regions are distributed on the surface of the stainless steel sheet and are brazed, so that the grinding and polishing sheet has the advantages of high efficiency and long service life of brazing diamond grinding materials, and also has certain elasticity and flexibility, so that the brazing diamond grinding and polishing sheet has better adaptability to the surface of a grinding workpiece and can obtain higher grinding surface quality. The elastic grinding and polishing sheet prepared by the novel process has simple and stable process, is easy to prepare, is not easy to break, and has better economic benefit after being used.
Drawings
FIG. 1 shows a stainless steel substrate according to the present invention.
FIG. 2 is a stainless steel substrate having a surface coated with an adhesive according to the present invention.
FIG. 3 is a stainless steel substrate with an adhesive coated surface and a template attached according to the present invention.
FIG. 4 shows the stainless steel substrate after diamond spraying.
FIG. 5 shows a stainless steel substrate after spreading solder according to the present invention.
FIG. 6 shows the polishing pad of the present invention after the template is removed.
FIG. 7 is a post-braze abrasive polishing pad without an elastic layer in accordance with the present invention.
FIG. 8 is a brazed diamond lapping plate according to the present invention.
FIG. 9 shows the profile of a brazed diamond lapping plate according to example 1 of the present invention.
FIG. 10 shows the profile of a brazed diamond lapping plate according to example 2 of the present invention.
Each of fig. 1-8 is labeled as: 1 stainless steel substrate, 2 binder, 3 template, 4 diamond particles, 5 solder alloy, 6 bare stainless steel substrate surface, 7 molten solder alloy, 8 elastic layer.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a brazed diamond elastic grinding and polishing sheet, which comprises a welding matrix 1, diamond particles 4 and an elastic layer 8, wherein the welding matrix 1 is a stainless steel sheet, the diamond particles 4 are fixed on the upper surface of the matrix through brazing, and the elastic layer 8 is adhered or sprayed on the lower surface of the matrix;
the diamond particles are distributed on the surface area of the stainless steel sheet, the diamond particles in the area are firmly brazed, and no solder or diamond particles exist at intervals in the area;
the diamond of a single area distributed on the surface of the stainless steel sheet is in a cluster shape or a sheet shape, and when the diamond area is in the cluster shape, the area of the single diamond area is not more than 1.5cm2(ii) a When the diamond region is in the form of a sheet, the area of the individual diamond region is not more than 6cm2；
The thickness of the stainless steel sheet is 0.3-0.8 mm;
the granularity range of the diamond particles is 35-400 meshes;
the width range of the diamond region interval is 1.2 mm-6 mm;
the thickness of the elastic layer is between 1mm and 5 mm;
the spacing range between diamond particles in the diamond region is 0.2-1.0 times of the particle size of the diamond particles, so that solder particles with particle sizes smaller than the range can be filled.
Example 1
The brazing diamond grinding and polishing sheet can be used for grinding weld joints, derusting and paint coats on the surface of marine deck steel and is designed as follows:
the outer diameter of the grinding and polishing piece is 125mm, the inner hole is 22.23, and a conventional 125-specification angle grinder can be assembled. The diamond adopts 50/60 meshes, yellow river whirlwind HSD80 grade, which can ensure a certain grinding efficiency, efficiently remove paint, rust, craters and the like, ensure a certain surface quality, and ensure smooth and clean steel surface after grinding without obvious scratches basically;
the diamond particles are distributed on the surface area of the stainless steel sheet, the diamonds are distributed in a cluster shape, 3-5 diamonds are arranged in the clusters, and the area of the diamonds is about 1.0m2The cluster spacing is 3.5 mm;
the thickness of the stainless steel sheet is 0.6mm, and 304 stainless steel is adopted;
the elastic layer is made of rubber with the thickness of 2mm, and the rubber and the stainless steel are bonded into a whole by using a rubber-metal adhesive. The preparation process comprises the following steps:
(1) cleaning: firstly, cleaning the upper surface and the lower surface of a stainless steel substrate by using acetone;
(2) brushing a binder: brushing and coating an adhesive I on the upper surface of a stainless steel substrate, wherein the adhesive I is an oily pressure-sensitive adhesive and acetone according to a volume ratio of 1: 3, preparation; the thickness of the adhesive coated by the brush is about 0.1 mm;
(3) pasting a template: the template is designed into cluster-shaped holes according to requirements, and the shape of the holes is the shape of the designed diamond region;
(4) diamond distribution: the diamond is manually distributed, a certain distance is reserved between single diamonds, and the distance ranges from 0.3 to 0.5 times of the particle size of the diamonds; the place covered by the template is the interval of the diamond area, and the diamonds cannot be arranged;
(5) spreading solder: certain intervals are reserved between diamond in the diamond area, and the diamond intervals can be filled by 80-100 meshes of solder; similarly, the place covered by the template is the interval of the diamond area, and the solder cannot be arranged;
(6) and (3) dripping or spraying thin glue: after the solder is spread in the step (5), continuously spraying an adhesive II on the surface to wet the surface, wherein the adhesive II is an oily pressure-sensitive adhesive and acetone according to the volume ratio of 1: 8, preparing the mixture, namely preparing the mixture,
(7) spreading solder: spraying 100-120 meshes of alloy solder, wherein the surface of the polishing sheet is entirely provided with a thin adhesive, so that a layer of alloy solder is adhered to the surface, and the adhesive strength between the solder and the thin adhesive is not too high due to the spraying of the solder, so that part of particles can be easily brushed by tools such as a brush and the like;
(8) flattening the solder: brushing off the solder on the surface of the polishing sheet to remove redundant solder particles bonded on the surface, so that the dosage of the solder in the diamond region can be ensured to be matched without being excessive;
(9) removing the template: at the moment, the template is also bonded with the adhesive and the solder alloy, and after the template is removed, the stainless steel substrate below the template is exposed to meet the design requirement;
(10) vacuum brazing: vacuum brazing is carried out in a vacuum furnace, the highest temperature is 1025 ℃, and heat preservation is carried out for 20 minutes;
(11) the back is provided with an elastic layer: and (3) bonding the stainless steel substrate and the stainless steel substrate together through a rubber-metal adhesive to obtain the brazing diamond grinding and polishing sheet.
Example 2
The brazing diamond grinding and polishing sheet which can polish and polish the weld joint on the surface of the stainless steel welding piece is designed as follows:
the stainless steel surface is polished with high requirements, and the polished part has a complex structure, so that the outer diameter of the elastic polishing sheet is 100mm, the inner hole is 16, and a conventional 100-specification angle grinder can be assembled. The diamond adopts 100/120 meshes, yellow river whirlwind HSD90 grade, which can ensure certain grinding efficiency, efficiently remove welding seams, welding spots and the like, ensure certain surface quality, and ensure smooth and clean steel surface without obvious scratches after grinding;
the diamond particles are distributed on the surface area of the stainless steel sheet, the diamond is distributed in a sheet shape, the sheet shape is a triangular shape, and the area is about 5cm2The distance between the flaky diamonds is 2 mm;
the thickness of the stainless steel sheet is 0.8mm, and the stainless steel sheet is 304;
the elastic layer is made of rubber with the thickness of 2mm, and the rubber and the stainless steel are bonded into a whole by using a rubber-metal adhesive. The preparation process comprises the following steps:
(1) cleaning: firstly, cleaning the upper surface and the lower surface of a stainless steel substrate by using acetone;
(2) brushing a binder: brushing and coating an adhesive I on the upper surface of a stainless steel substrate, wherein the adhesive I is an oily pressure-sensitive adhesive and acetone according to a volume ratio of 1: 5, preparation; the thickness of the adhesive which is brushed is about 0.08 mm;
(3) pasting a template: the template is designed into a triangular sheet-shaped hole according to requirements, diamond is distributed in the hole, and the hole is attached to the surface of the substrate;
(4) diamond distribution: because the diamonds are small, the materials can be distributed by adopting a vibrating screen, and the distance between single diamonds is 0.4-1.0 time of the particle size of the diamonds; the place covered by the template is the interval of the diamond area, and the diamonds cannot be arranged;
(5) spreading solder: certain intervals are reserved between diamond in the diamond area, and the diamond intervals can be filled by 100-150 meshes of solder; similarly, the place covered by the template is the interval of the diamond area, and the solder cannot be arranged;
(6) removing the template: at the moment, the template is also bonded with the adhesive and the solder alloy, and after the template is removed, the stainless steel substrate below the template is exposed to meet the design requirement;
(7) vacuum brazing: vacuum brazing is carried out in a vacuum furnace, the highest temperature is 1028 ℃, and heat preservation is carried out for 25 minutes;
(8) the back is provided with an elastic layer: and (3) bonding the stainless steel substrate and the stainless steel substrate together through a rubber-metal adhesive to obtain the brazing diamond grinding and polishing sheet.
Claims (10)
1. The brazing diamond grinding and polishing sheet is characterized in that: the polishing piece comprises a welding substrate, diamond particles and an elastic layer, wherein the welding substrate is a stainless steel sheet, the diamond particles are fixed on the upper surface of the substrate through brazing, and the elastic layer is adhered or sprayed on the lower surface of the substrate;
the diamond particles are distributed on the surface area of the stainless steel sheet, the diamond particles in the area are firmly brazed, and no solder or diamond particles exist at intervals in the area;
the diamond of a single area distributed on the surface of the stainless steel sheet is in a cluster shape or a sheet shape, and when the diamond area is in the cluster shape, the area of the single diamond area is not more than 1.5cm2(ii) a When the diamond region is in the form of a sheet, the area of the individual diamond region is not more than 6cm2；
The thickness of the stainless steel sheet is 0.3-0.8 mm;
the granularity range of the diamond particles is 35-400 meshes;
the width range of the diamond region interval is 1.2 mm-6 mm;
the thickness of the elastic layer is between 1mm and 5 mm;
the distance between the diamond particles in the diamond region is 0.2-1.0 times of the particle size of the diamond particles.
2. The brazed diamond abrasive polishing pad of claim 1, wherein the stainless steel sheet is made of high temperature resistant stainless steel.
3. The brazed diamond abrasive polishing pad of claim 2, wherein the stainless steel sheet is 304 or 316 stainless steel.
4. The brazing diamond abrasive polishing pad according to claim 1, wherein the stainless steel sheet has a thickness of 0.35 to 0.5 mm.
5. The brazing diamond abrasive polishing pad according to claim 1, wherein the diamond region has a simple geometric shape selected from any one or more of a circle, a triangle, and a quadrangle.
6. The brazed diamond abrasive polishing pad of claim 1, wherein said resilient layer is rubber.
7. The brazed diamond abrasive polishing pad according to claim 1 or 6, wherein the elastic layer is bonded by high-strength glue, and the bonding strength can resist the high temperature of 220 ℃; or the elastic layer is combined with the stainless steel sheet substrate through a vulcanization process.
8. The brazed diamond abrasive polishing pad according to claim 1 or 6, wherein the elastic layer is adhered by spraying, and the spraying material is an elastic paint.
9. The method for preparing the brazing diamond grinding and polishing sheet according to any one of claims 1 to 8, which is characterized by comprising the following specific preparation process steps:
(1) cleaning: firstly, cleaning the upper surface and the lower surface of a stainless steel substrate by using acetone;
(2) brushing a binder: brushing and coating an adhesive I on the upper surface of a stainless steel substrate, wherein the adhesive I is an oily pressure-sensitive adhesive and acetone according to a volume ratio of 1: 2-1: 5, preparation; the thickness of the adhesive coated by the brush is 0.04-0.15 mm;
(3) pasting a template: the template is in a shape designed to be printed according to requirements, a plurality of holes are arranged on the template, and the space between the holes is the space between the designed diamond regions; the size of the interval is changed according to the working condition of processing, but the size width of the interval is in the range of 1.2 mm-6 mm; attaching the designed template to one surface of a stainless steel substrate coated with a binder;
the shape of the hole in the template in the step (3) is the shape of the designed diamond area;
(4) diamond distribution: the diamond distribution is manual distribution or machine distribution, and a certain interval is required to be arranged between single diamonds in a diamond area instead of close contact; the place covered by the template is the interval of the diamond area, and the diamonds cannot be arranged;
(5) spreading solder: certain intervals are reserved between the diamond in the diamond area, and the intervals of the diamond can be filled up by the solder; similarly, the place covered by the template is the interval of the diamond area, and the solder cannot be arranged;
(6) removing the template: at the moment, the template is also bonded with the adhesive and the solder alloy, and after the template is removed, the stainless steel substrate below the template is exposed to meet the design requirement;
(7) vacuum brazing: carrying out vacuum brazing in a vacuum furnace at the highest temperature of 1022-1035 ℃, and keeping the temperature for 8-35 minutes;
(8) the back is provided with an elastic layer: and (3) bonding or spraying an elastic layer on the lower surface of the stainless steel substrate through an inorganic adhesive to obtain the brazing diamond grinding and polishing sheet.
10. The method for preparing a brazed diamond polishing pad according to claim 9, wherein when the diamond particles are large and densely arranged, and the required amount of the solder cannot be filled up by only one time of spreading, the operations of the steps (5-1) to (5-3) are required between the step (5) and the step (6):
(5-1) dropping or spraying thin glue: after the solder is spread in the step (5), continuously spraying or dripping a binder II by a dropper on the surface to wet the surface; the adhesive II is an oily pressure-sensitive adhesive and acetone according to the volume ratio of 1: 5-1: 10, preparation;
(5-2) spreading solder: alloy solder is distributed, and at the moment, because the whole surface of the polishing piece is provided with the thin adhesive, the surface is adhered with a layer of alloy solder;
(5-3) leveling the solder: and brushing off the solder on the surface of the polishing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285894.3A CN113043178A (en) | 2021-03-17 | 2021-03-17 | Brazing diamond grinding and polishing sheet and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110285894.3A CN113043178A (en) | 2021-03-17 | 2021-03-17 | Brazing diamond grinding and polishing sheet and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113043178A true CN113043178A (en) | 2021-06-29 |
Family
ID=76513323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110285894.3A Pending CN113043178A (en) | 2021-03-17 | 2021-03-17 | Brazing diamond grinding and polishing sheet and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113043178A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113894703A (en) * | 2021-10-29 | 2022-01-07 | 江苏韦尔博新材料科技有限公司 | Preparation process of brazed diamond dresser based on cluster-shaped units |
| CN114770389A (en) * | 2022-05-24 | 2022-07-22 | 江阴市科雷特工具有限公司 | Long-life brazing diamond grinding block and processing technology thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020067854A (en) * | 2001-02-19 | 2002-08-24 | 이화다이아몬드공업 주식회사 | Saw blade shank |
| JP2002283240A (en) * | 2001-03-22 | 2002-10-03 | Mitsubishi Materials Corp | Monolayer grinding wheel |
| US6537140B1 (en) * | 1997-05-14 | 2003-03-25 | Saint-Gobain Abrasives Technology Company | Patterned abrasive tools |
| US20060254154A1 (en) * | 2005-05-12 | 2006-11-16 | Wei Huang | Abrasive tool and method of making the same |
| CN101391402A (en) * | 2002-09-27 | 2009-03-25 | 宋健民 | Brazed diamond tools and methods for making the same |
| CN102172897A (en) * | 2011-02-23 | 2011-09-07 | 厦门致力金刚石科技股份有限公司 | Brazed diamond flexible abrasive disc and manufacturing method thereof |
| CN102896387A (en) * | 2012-09-21 | 2013-01-30 | 南京航空航天大学 | Super-hard abrasive brazing tool distributing technology |
| CN104669138A (en) * | 2015-02-12 | 2015-06-03 | 南京航空航天大学 | Method for manufacturing abrasive tool with abrasive particle collaborative configuration by virtue of brazing |
| CN106376234A (en) * | 2014-05-02 | 2017-02-01 | 3M创新有限公司 | Interrupted structured abrasive article and methods of polishing a workpiece |
| CN108161776A (en) * | 2017-12-19 | 2018-06-15 | 南京航空航天大学 | It is brazed diamond segment composite wheel |
| CN110125828A (en) * | 2019-05-28 | 2019-08-16 | 蚌埠学院 | A kind of preparation method of diamond tool |
-
2021
- 2021-03-17 CN CN202110285894.3A patent/CN113043178A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6537140B1 (en) * | 1997-05-14 | 2003-03-25 | Saint-Gobain Abrasives Technology Company | Patterned abrasive tools |
| KR20020067854A (en) * | 2001-02-19 | 2002-08-24 | 이화다이아몬드공업 주식회사 | Saw blade shank |
| JP2002283240A (en) * | 2001-03-22 | 2002-10-03 | Mitsubishi Materials Corp | Monolayer grinding wheel |
| CN101391402A (en) * | 2002-09-27 | 2009-03-25 | 宋健民 | Brazed diamond tools and methods for making the same |
| US20060254154A1 (en) * | 2005-05-12 | 2006-11-16 | Wei Huang | Abrasive tool and method of making the same |
| CN102172897A (en) * | 2011-02-23 | 2011-09-07 | 厦门致力金刚石科技股份有限公司 | Brazed diamond flexible abrasive disc and manufacturing method thereof |
| CN102896387A (en) * | 2012-09-21 | 2013-01-30 | 南京航空航天大学 | Super-hard abrasive brazing tool distributing technology |
| CN106376234A (en) * | 2014-05-02 | 2017-02-01 | 3M创新有限公司 | Interrupted structured abrasive article and methods of polishing a workpiece |
| CN104669138A (en) * | 2015-02-12 | 2015-06-03 | 南京航空航天大学 | Method for manufacturing abrasive tool with abrasive particle collaborative configuration by virtue of brazing |
| CN108161776A (en) * | 2017-12-19 | 2018-06-15 | 南京航空航天大学 | It is brazed diamond segment composite wheel |
| CN110125828A (en) * | 2019-05-28 | 2019-08-16 | 蚌埠学院 | A kind of preparation method of diamond tool |
Non-Patent Citations (1)
| Title |
|---|
| 王乾,薛茂权,董笑瑜: ""立方氮化硼钎焊制备磨料砂轮的工艺及性能研究"", 《硬质合金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113894703A (en) * | 2021-10-29 | 2022-01-07 | 江苏韦尔博新材料科技有限公司 | Preparation process of brazed diamond dresser based on cluster-shaped units |
| CN114770389A (en) * | 2022-05-24 | 2022-07-22 | 江阴市科雷特工具有限公司 | Long-life brazing diamond grinding block and processing technology thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101068654B (en) | Contoured cmp pad dresser and associated methods | |
| EP2083967B1 (en) | Conditioning tools and techniques for chemical mechanical planarization | |
| CN113043178A (en) | Brazing diamond grinding and polishing sheet and preparation process thereof | |
| US20150290771A1 (en) | Abrasive article and method for making the same | |
| EP0950470B1 (en) | Abrasive tool and the method of producing the same | |
| CN101391402A (en) | Brazed diamond tools and methods for making the same | |
| US5976001A (en) | Interrupted cut abrasive tool | |
| WO1998014307A1 (en) | Superabrasive tool and method of its manufacture | |
| US20090090066A1 (en) | Grinding tool and manufacturing method thereof | |
| JP2004025401A (en) | Disc-shaped diamond grinding wheel | |
| CN103203692B (en) | A kind of electroplated diamond abrasive band and manufacture method thereof | |
| KR970003489B1 (en) | On edge honing device | |
| KR200339181Y1 (en) | Diamond electrodeposited conditioner for CMP pad | |
| JPH10193269A (en) | Electrodeposition tool and manufacture therefor | |
| US20180104794A1 (en) | Grinding wheel | |
| JP3020434B2 (en) | Electroplated wheel and manufacturing method thereof | |
| TW200916262A (en) | Contoured cmp pad dresser and associated methods | |
| KR100363693B1 (en) | Chamically and mechanically grinding pad dresser and manufacturing method thereof | |
| CN112677062B (en) | Special abrasive grain landform for polishing steel grinding disc, diamond grinding disc and preparation method thereof | |
| CN216371758U (en) | Multi-layer brazing diamond grinding tool | |
| KR20140135652A (en) | Conditioner with improved corrosion-resistance | |
| JPH08150566A (en) | Grinding stone for grinding | |
| CN111434461A (en) | Elastic grinding block tool bit | |
| KR20230087212A (en) | Manufacturing method for conditioner of stepped body structure | |
| KR20170138700A (en) | Polishing abrasive pad and abrasive wheel for polishing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |