WO2021169417A1

WO2021169417A1 - Brazed diamond abrasive tool suitable for casting trim polishing

Info

Publication number: WO2021169417A1
Application number: PCT/CN2020/128535
Authority: WO
Inventors: 崔红杰; 林诚
Original assignee: 南京固华机电科技有限公司
Priority date: 2020-02-28
Filing date: 2020-11-13
Publication date: 2021-09-02

Abstract

A brazed diamond abrasive tool suitable for casting trim polishing, comprising a polishing disc outer end (1), a polishing disc inclined surface (2), a polishing disc plane top end (3), a polishing disc (4), a positioning hole (5), and diamond polymetallic abrasives (6). The diamond polymetallic abrasives (6) at the edge of the polishing disc outer end (1) are orderly and densely arranged. The diamond polymetallic abrasives (6) on the polishing disc inclined surface (2) are single and are orderly distributed at equal intervals along the radial direction of the polishing disc. The diamond polymetallic abrasives (6) on the surface of the polishing disc plane top end (3) are tufted abrasives and are arranged in the shape of vortex. The bottom of the polishing disc is of a concave surface structure. The abrasive tool has characteristics of high polishing efficiency, light touch, low vibration, being odorless, long service life, good appearance, etc., and abrasives of different grades are selected according to actual conditions to perfectly replace the conventional resin grinding wheel piece.

Description

Brazed diamond abrasive tool suitable for casting flash grinding

Technical field

The invention belongs to the technical field of casting flash grinding application, and in particular relates to a brazed diamond abrasive tool suitable for casting flash grinding.

Background technique

At present, the conventional grinding method for casting flash is that the grinder uses a manual grinder equipped with a resin grinding wheel to perform manual grinding. Because the resin grinding wheel is made by consolidating silicon carbide abrasives and corundum abrasives into a disc shape using the principle of resin curing, the bonding strength is low. Therefore, during the grinding process, the grinding disc is easy to consume, sparks, and smells. Disadvantages such as large dust. This is because the resin grinding wheel encounters excessive impact on the cast iron flash during the grinding process, which causes the abrasive to fall off while grinding, and because the exposed height of the abrasive is low, the grinding surface temperature is high, which causes the resin to soften and melt. Volatile, emitting a toxic and irritating odor. In addition, due to low abrasive exposure, the sharpness of the grinding disc is not ideal and the grinding efficiency is slow, making the grinding workload of the casting account for about a quarter of the overall manufacturing workload of the casting.

Due to the above shortcomings, coupled with the cost control requirements of the casting manufacturing industry, it is necessary to develop a new type of grinding disc to replace the traditional grinding disc in order to achieve the goals of high grinding efficiency, long life, and pollution-free.

The consolidation technology of diamond polycrystalline currently has three main bonding methods: electroplating, sintering, and brazing. Through the comparison of the above three combination methods, it is found that the sintering technology and the electroplating technology have a low level of abrasive exposure, the carcass has low abrasive holding strength, unsatisfactory sharpness, and poor chip removal. It has proved difficult to meet the requirements of grinding casting flash . The brazing technology uses solder melting to weld the diamond polycrystalline and the matrix together. The chemical metallurgical bonding between the solder and the abrasive occurs. The abrasive welding strength is high, so the abrasive is exposed to high and the grinding is sharp, which is an ideal production. The technology to polish the flash of castings. Compared with other abrasives, diamond is currently the hardest material; it has good abrasiveness; it has low specific heat and high thermal conductivity, so it is easy to heat up and dissipate heat, and diamond is an ideal material for grinding metals. Compared with traditional resin grinding wheels, brazed diamond tools basically have no abrasive shedding during use, and no resin melts and volatilizes. Because they are safe in use, no irritating odors are generated, and they are more environmentally friendly. This is consistent with the current development concept of low carbon and environmental protection.

At present, the use of brazing technology to prepare brazed diamond tools by welding diamond on a steel substrate has been partially used in actual production, such as high-speed rail Borg plate grinding wheels and brazed diamond drill bits. However, there are no relevant reports and patents for diamond tools for professional grinding of casting flash. The existing brazed diamond grinding tools are of few types and are mostly used for grinding stone. The tool manufacturing process, the shape of the base body, and the grinding equipment are quite different, and cannot be applied to the grinding of castings.

At present, most of the conventional brazed grinding discs are made by randomly arranging a certain amount of diamonds on the surface of the grinding disc substrate and then brazing them at a high temperature. Due to process limitations, the abrasive arrangement on the surface of the grinding disc is difficult to achieve uniform arrangement, and the topography is not optimized according to the actual topography of the grinding disc, which wastes the amount of diamond and restricts the grinding efficiency and life of the grinding disc.

Abrasive arrangement technology has been partially applied in brazing and electroplating products, and the actual production technologies include hole template method, vacuum adsorption method and cluster arrangement method. The hole template method uses a hole template made of a special material to orderly distribute the abrasive. The principle is to open a series of small holes on the substrate, and each hole contains a diamond, and then use related processes to adhere the diamonds arranged in sequence. On the surface of the substrate. This method is mostly used in the preparation of sintered diamond tools, such as saw blade bits. Currently, it can only be used for flat surfaces and a few simple geometric shapes. The vacuum adsorption method uses the principle of vacuuming to make a template with small holes have the adsorption force to adsorb diamonds, and then place it on the surface of the substrate. This method is similar to the hole template method. It can only prepare some relatively simple geometric surfaces. This method has not yet achieved the orderly distribution of abrasives according to the performance of the workpiece. The third cluster arrangement method refers to the use of a template with a certain geometric shape to distribute the diamond abrasive in the voids of the template, and the template can be sprinkled after it is arranged. This method is more common in electroplated diamond products. Because the template is relatively simple to make, it is widely used in electroplated products. However, this method can only achieve orderly macroscopic shapes, and the arrangement of diamond abrasives in each gap is still disordered It is impossible to achieve orderly arrangement, and it is difficult to effectively utilize the advantages of diamond abrasives.

Therefore, based on the above-mentioned problems, the present invention provides a brazed diamond abrasive tool suitable for grinding the flash of castings.

technical problem

The purpose of the present invention is to provide a brazed diamond abrasive tool suitable for the grinding of cast iron flashes. According to the specific requirements of cast iron grinding, a manual grinder for grinding is used as a supporting machine, and according to the size, shape and grinding of cast iron flashes The size of the disc is optimized to calculate the arrangement of the diamond polycrystalline abrasive on the surface of the grinding disc, which has the characteristics of high grinding efficiency, light hand feeling, low vibration, odorless, long life, and beautiful appearance.

Technical solutions

Technical Solution: The present invention provides a brazed diamond abrasive tool suitable for the grinding of casting flash, including the outer end of the grinding disc, the inclined surface of the grinding disc, the top of the grinding disc plane, the grinding disc, and the positioning hole arranged in the grinding disc, and The diamond poly-gold abrasives brazed uniformly on the outer end of the grinding disc, the inclined surface of the grinding disc, and the top surface of the grinding disc plane respectively, wherein the diamond poly-gold abrasives on the outer edge of the grinding disc are in an orderly close arrangement, and the inclined surface of the grinding disc The diamond poly-gold abrasive is a single particle and is distributed in an orderly and equal interval along the radial direction of the grinding disc. The diamond poly-gold abrasive on the top surface of the grinding disc is arranged in a cluster-like abrasive turbine shape, and the bottom of the grinding disc has a concave structure for chip removal. And the positioning grinder is installed; the outer end of the grinding disc, the inclined surface of the grinding disc, the top of the plane of the grinding disc and the grinding disc are in a disc-shaped structure as a whole.

According to the technical solution, the width of the flat top end of the grinding disc occupies 1/3-1/2 of the radius of the grinding disc, and the width of the inclined surface of the grinding disc is 3-5 mm.

According to the technical scheme, the outer diameter of the brazed diamond polycrystalline casting grinding disc with the disc-shaped structure is 100mm-180mm, and the thickness of the base body is 1.4mm-4.5mm.

In this technical solution, the included angle θ between the inclined surface of the grinding disc and the horizontal direction is 5°-15°.

According to the technical scheme, the diamond poly-gold abrasive is brazed on the outer end of the grinding disc, the inclined surface of the grinding disc, and the top surface of the plane of the grinding disc, the solder is a nickel-copper-chromium-borosilicate alloy, and the brazing method is vacuum brazing.

In this technical solution, the diamond poly-gold abrasive on the outer edge of the grinding disc is an orderly and densely packed high-grade diamond-cutting abrasive with a grain size of 10-50 mesh. The lateral distance between two adjacent diamond poly-gold abrasives is 2d-4d, the longitudinal distance between two adjacent diamond polygold abrasives is 2d-5d, where d is the maximum particle size of the diamond polygold abrasives.

According to the technical solution, the number of diamond poly-gold abrasives on the inclined surface of the grinding disc is the same in the radial direction of the grinding disc.

According to the technical scheme, the diamond polygold abrasive on the top surface of the grinding disc is a medium-grade turbine-shaped arrangement of cluster grinding abrasives, with a particle size of 10-50 mesh, and each cluster has 3-8 diamond polygold abrasives. .

Beneficial effect

Compared with the prior art, the beneficial effects of a brazed diamond abrasive tool suitable for flash grinding of castings of the present invention are as follows: 1. It has high grinding efficiency, light hand feeling, low vibration, odorless, long life and beautiful appearance. According to the actual situation, different grades of abrasives are selected, which optimizes the cost and is more economical. It perfectly replaces the traditional resin grinding wheel. It is the development direction of casting grinding discs in the casting manufacturing industry and has a large market. Potential; 2. The preparation method has simple process and convenient operation, and can simply realize the orderly and clustered arrangement of diamond abrasives.

Description of the drawings

Figure 1 is a schematic cross-sectional view of a brazed diamond abrasive tool suitable for flash grinding of castings according to the present invention;

2 is a schematic diagram of the arrangement of abrasives on the outer edge of the grinding disc of a brazed diamond grinding tool suitable for the flash grinding of castings according to the present invention;

Fig. 3 is a schematic diagram of the arrangement of surface abrasives on the top of the grinding disc of a brazed diamond grinding tool suitable for the flash grinding of castings according to the present invention.

Embodiments of the present invention

The present invention will be further clarified below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, Figure 2 and Figure 3, a brazed diamond abrasive tool suitable for burr grinding of castings includes the outer end of the grinding disc 1, the inclined surface of the grinding disc 2, the flat top end of the grinding disc 3 and the grinding disc 4, and The positioning holes 5 are arranged in the grinding disc 4, and the diamond poly-gold abrasives 6 brazed uniformly on the outer end of the grinding disc 1, the inclined surface of the grinding disc 2, the top 3 of the flat surface of the grinding disc, wherein the outer end of the grinding disc 1 The diamond poly-gold abrasive 6 on the edge is orderly and densely arranged, and the diamond poly-gold abrasive 6 on the inclined surface of the grinding disc 2 is a single particle and is distributed in an orderly and equal interval along the radial direction of the grinding disc. It is arranged in a cluster of abrasives in a turbine shape, and the bottom of the grinding disc 4 is a concave structure, used for chip removal and positioning the grinder; the outer end of the grinding disc 1. 4 The whole is a disc-shaped structure.

Further preferably, the width of the flat top 3 of the grinding disc occupies 1/3-1/2 of the radius of the grinding disc, and the width of the inclined surface 2 of the grinding disc is 3-5 mm; and the brazed diamond polycrystalline casting of the disc-shaped structure The outer diameter of the grinding disc substrate is 100mm -180mm, and the thickness of the substrate is 1.4mm -4.5mm; and the angle θ between the inclined surface of the grinding disc 2 and the horizontal direction is 5º-15º; and the diamond polygold abrasive 6 is brazed and polished The outer end of the disc 1, the inclined surface of the grinding disc 2, the top 3 surface of the plane of the grinding disc, the solder is nickel-copper-chromium-borosilicate alloy, and the brazing method is vacuum brazing; and the diamond polygold abrasive 6 on the edge of the outer end 1 of the grinding disc is Orderly close-packed high-grade abrasives for drilling and cutting, with a grain size of 10-50 mesh, the horizontal distance between two adjacent diamond poly-gold abrasives 6 is 2d-4d, and the longitudinal distance between two adjacent diamond poly-gold abrasives 6 is 2d-5d, where d is the maximum particle size of the diamond poly-gold abrasive 6; and the diamond poly-gold abrasive 6 of the bevel surface 2 of the grinding disc 2 has the same quantity in the radial direction of the grinding disc; and the flat top 3 of the grinding disc Diamond poly-gold abrasive 6 is a medium-grade turbine-shaped arrangement of cluster-like grinding abrasives, with a particle size of 10-50 mesh, and 3-8 diamond poly-gold abrasives 6 in each cluster.

The preparation method of the brazed diamond abrasive tool suitable for casting flash grinding of this structure includes the following steps: (1) punching of the outer diameter of the base body of the grinding disc; (2) chamfering the outer edge of the outer end of the grinding disc base; (3) grinding The surface of the disc substrate is sandblasted and ultrasonically cleaned; (4) A bonding agent is applied to the surface of the cleaned and dried substrate, and the bonding agent is used to bond diamond abrasive grains and solder; (5) Arrange the abrasives on the flat top of the grinding disc, the inclined surface of the grinding disc and the outer edge of the grinding disc; (6) After the abrasive arrangement is completed, add brazing filler and perform vacuum brazing to prepare a diamond grinding disc for grinding castings.

Further preferably, the abrasive arrangement of the flat top of the grinding disc, the inclined surface of the grinding disc, and the outer edge of the grinding disc are all completed by the following steps: (1) Place a prefabricated orderly arrangement template designed according to the topography optimization on the substrate Surface; (2) Arrange diamond abrasives, which are distributed in the cavity area of the template, so as to obtain a topography optimized design according to the topography; the top of the polishing disk plane obtains a vortex-like arrangement of clusters and orderly landforms; The outer edge of the grinding disc obtains an orderly and densely arranged landform; the inclined surface of the grinding disc obtains a landform with single abrasive grains in an orderly arrangement and the same radial number; (3) remove the orderly arrangement template to obtain a diamond press The topography optimizes the arrangement of the surface topography.

The present invention is a brazed diamond abrasive tool suitable for casting flash grinding, and abrasive material (diamond poly-gold abrasive 6) cloth for grinding discs (outer end of grinding disc 1, inclined surface of grinding disc 2, flat top end of grinding disc 3 and grinding disc 4) Determined according to the working condition of the grinding disc and the shape of the grinding disc. When the grinding disc is working, it rotates at high speed along the central axis of the grinding disc and can move in any direction and at a specific angle. Therefore, the grinding movement of the grinding disc is extremely complicated. According to the reverse analysis of the actual application state, it is determined that the brazed diamond polycrystalline casting is polished The abrasive distribution on the disc is optimized for geomorphology.

(1) The topography of the abrasive arrangement on the outer edge of the grinding disc is optimized. During the use of the grinding disc, the outer end of the grinding disc rotates at high speed while advancing, so the maximum force is applied to the outer end of the grinding disc, which requires a higher diamond brazing strength , The load is greater, and the movement of the outer end of the grinding disc can be regarded as the movement of cutting while grinding. Therefore, in order to reduce the load of the outer end, the density of the outer end of the grinding disc should be as far as possible while ensuring the chip removal space. Therefore, the cloth at the outer end of the grinding disc should be closely packed and orderly, as shown in Figure 2.

According to the analysis of the load and the movement trajectory of the grinding disc, the abrasive used here is a large-size, high-grade abrasive for drilling and cutting. The abrasive particle size ranges from 10 mesh to 50 mesh, and the particle size of 35 mesh to 40 mesh is preferably used through the test. The lateral distance between two adjacent abrasive grains is 2d ~ 4d, the longitudinal distance between two adjacent abrasive grains is 2d~5d, where d is the maximum particle size of the abrasive.

(2) The topography of the abrasive arrangement on the inclined surface of the grinding disc is optimized. Because the operator often maintains a certain angle between the grinding disc and the grinding plane when using the grinder, the grinding disc can obtain a forward thrust to cut and grind the protruding casting flash. , And can ensure that the edge of the grinding disc can discharge the grinding debris through the inclined surface when the grinding disc is grinding the casting flash, and make the grinding disc have a certain adaptability to the grinding surface. Therefore, the upper end of the grinding disc is composed of a flat surface and a bevel with a certain inclination angle. The bevel angle θ (as shown in Figure 1) can be determined according to the principle of ergonomics and the shape of the casting flash.

Because the outer edge of the grinding disc is small due to the load on the inclined surface of the grinding disc, it still needs to play the role of grinding and chip removal. The requirements for this inclined surface are high grinding efficiency, long grinding life, good heat dissipation effect, and chip removal. The effect is good. In order to achieve the above requirements, the method of orderly arranging the abrasives is used to arrange the abrasives along the radial direction of the grinding disc. The specific arrangement is to separate the single abrasives at equal intervals in the radial direction of the grinding disc. And the number of abrasive particles in the radial direction is the same. This is due to the high-speed rotation of the grinding disc. In order to ensure the smallest vibration and the highest grinding efficiency, the number of abrasive particles involved in the grinding at the same time in the rotation direction is the same to ensure the smoothness of the grinding. In addition, the orderly arrangement of abrasive grains also improves the aesthetics of the grinding disc. According to the analysis of the load and the movement trajectory of the grinding disc, the abrasives here are medium-sized and high-grade grinding abrasives.

In order to achieve the above requirements, the angle θ of the inclined plane is 5º～15º. When the abrasive is distributed on the grinding disc in the radial direction, the distance between adjacent phase particles along the radial direction of the grinding disc is 1.5d～4d, distributed along the radial direction. The distance between the two rows of abrasive grains ranges from 1.5d to 6d. The abrasive particle size ranges from 10 mesh to 50 mesh, and the particle size of 40 mesh to 50 mesh is optimized through experiments.

(3) Optimization of the topography of the surface abrasive arrangement on the top of the grinding disc

Since the movement of the casting grinding disc is actually a combination of cutting and grinding, and the polished surface has certain accuracy requirements, after cutting and grinding the outer end of the grinding disc and the inclined surface, the function of the plane is to remove chips, Further grinding, polishing and polishing the surface, so in order to improve the grinding accuracy and chip removal effect, the abrasive arrangement on the top of the grinding disc is shown in Figure 3.

The principle of optimizing the topography of the top surface of the grinding disc is the best result of creatively optimizing the topography according to the requirements of the casting flash grinding, the shape of the polished casting flash, the speed of the grinder and other working conditions.

The trajectory formed by each clustered abrasive can be a straight line, arc, involute, parabola, etc. The distance between two adjacent track lines ranges from 3mm to 25mm. According to the analysis of the load and the movement trajectory of the grinding disc, the medium-grade and fine-grained grinding abrasives are selected as the abrasives here. The top surface of the grinding disc is arranged in clusters of abrasives in a turbine shape, and no abrasives are arranged in other parts. The grit size of the abrasive is 10-50 meshes, and the grit size of 40-50 meshes is optimized through experiments, with 3-8 abrasives per cluster, and the cluster area ranges from 4mm ² to 12mm ² .

The cluster arrangement at the top plane increases the chip removal space of the plane grinding, ensures the heat dissipation space, and also improves the grinding efficiency. The clustered diamonds on the top plane are arranged in a turbine shape to ensure the smoothness of the grinding disc during high-speed rotation. This is because the cutting angle of each clustered diamond belt is the same, and the dynamic effective abrasive grains at the same time The numbers are the same.

The grade classification of abrasives involved in the present invention is the same as JB/GQ·F6010-86 Same (quality grading standards for synthetic diamond and cubic boron nitride products).

Example one

The brazed diamond abrasive tool suitable for the grinding of casting flashes of the present invention polishes the rounded corners of the outer end of the disc base body, and the size of the rounded corners matches the thickness of the base body.

The arrangement of the abrasives of the brazed diamond abrasive tool is as follows:

①The outer edge of the grinding disc is made of medium-level flat diamond abrasive with a grain size of 35-40 mesh. The horizontal distance between two adjacent abrasive grains is 2d and the longitudinal distance is 2d.

②The inclined surface of the grinding disc is made of high-grade diamond abrasives, with a grain size of 40-50 mesh, the distance between two abrasive grains in the radial direction is 1.5d, and the distance between two rows of abrasive grains distributed in the radial direction is 1.5d.

③The surface abrasives on the top of the grinding disc are arranged in circular clusters with a diameter of 3mm. Each cluster area is arranged with 10-15 medium-grade diamonds of 40-50 mesh. The trajectory line is an arc with a radius of 80, and 17 are all arranged. strip.

In the brazed diamond abrasive tool suitable for casting flash grinding, the preparation method of the brazed diamond polycrystalline casting grinding disc is as follows:

(1) Punching the outer diameter of the grinding disc substrate. The base material of the grinding disc is 65Mn steel to ensure the strength of the tool, and the base thickness is 1.4mm.

(2) Grind the outer edge of the disc base body to chamfer, and the chamfer size r=0.5.

(3) Grind the surface of the disc substrate with sandblasting and ultrasonic cleaning.

(4) Coating the adhesive on the surface of the cleaned and dried substrate, the role of the adhesive is to bond the diamond abrasive grains and the solder. Among them, first brush the adhesive on the top surface of the sanding disc.

(5) Place the prefabricated orderly arrangement template designed according to the geomorphology optimization on the surface of the substrate. The template material is flexible and can be bent, so it can be closely attached to the surface of the grinding disc.

(6) Arrange diamond abrasives. Use medium grade 40-50 mesh diamonds for grinding. Due to the orderly arrangement of the template, the diamond abrasives are only distributed in the cavity area of the template, which can be obtained according to the topography. Optimize the designed shape. The top surface of the grinding disc can be arranged in a cluster of orderly landforms arranged in a spiral shape.

(7) The orderly arrangement template is removed, and the arrangement of the surface abrasives on the top of the grinding disc is realized.

(8) According to the method of steps (4) to (7), cloth the inclined surface of the grinding disc, and use high-grade 40-50 mesh grinding diamond as the abrasive. The obtained landform is that the single grains are arranged in an orderly manner, and the radial numbers are the same.

(9) Follow steps (4) to (7) to fabric the outer edge of the grinding disc, and use high-grade 35-40 mesh diamonds for the abrasive. The result is a close-packed and orderly distributed abrasive landform.

(10) After the abrasive arrangement is completed, brazing fillers are added and vacuum brazing is carried out to prepare a diamond grinding disc for grinding castings.

Example two

①The outer edge of the grinding disc is made of medium flat diamond abrasive with a grain size of 35-40 mesh. The horizontal distance between two adjacent abrasive grains is 4d and the longitudinal distance is 5d.

②The inclined surface of the grinding disc is made of high-grade diamond abrasives with a grain size of 40-50 mesh. The distance between two abrasive grains in the radial direction is 3.5d, and the distance between two rows of abrasive grains distributed in the radial direction is 5d.

③The surface abrasives on the top of the grinding disc are arranged in circular clusters with a diameter of 6mm. Each cluster area is arranged with 25 to 30 medium-grade diamonds of 40-50 mesh, 35 diamonds in each cluster.

(1) Punching the outer diameter of the grinding disc substrate. The base material of the grinding disc is 65Mn steel to ensure the strength of the tool, and the base thickness is 4.5mm.

The brazed diamond casting grinding disc produced by this method has the characteristics of high grinding efficiency, light hand feeling, low vibration, odorless, long life, beautiful appearance, etc., and different grades of abrasives are selected according to the actual situation, which optimizes the cost and has more advantages. Economical, it perfectly replaces the traditional resin grinding wheel. It is the development direction of casting grinding discs in the casting manufacturing industry, and it has great market potential.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the present invention. The scope of protection.

Claims

A brazed diamond abrasive tool suitable for burr grinding of castings, characterized in that it comprises an outer end of a grinding disc (1), a bevel of a grinding disc (2), a top end of the plane of the grinding disc (3) and a grinding disc (4), and The positioning holes (5) set in the grinding disc (4), and the diamond polygold abrasives brazed uniformly on the outer end of the grinding disc (1), the inclined surface of the grinding disc (2), and the top surface of the grinding disc (3) (6), wherein the diamond poly-gold abrasive (6) on the edge of the outer end (1) of the grinding disc is ordered and close-packed, and the diamond poly-gold abrasive (6) on the bevel (2) of the grinding disc is a single particle and is arranged along the grinding disc. The diamond poly-gold abrasives (6) on the surface of the flat top (3) of the grinding disc are arranged in a turbine-like arrangement of cluster abrasives, and the bottom of the grinding disc (4) is a concave surface structure, which is used for chip removal and A positioning grinder is installed; the outer end of the grinding disc (1), the inclined surface of the grinding disc (2), the top of the plane of the grinding disc (3) and the grinding disc (4) are in a disc-shaped structure as a whole.
The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, characterized in that: the width of the flat top (3) of the grinding disc occupies 1/3-1/2 of the radius of the grinding disc. The width of the disc inclined surface (2) is 3-5mm.
The brazed diamond grinding tool suitable for casting flash grinding according to claim 1, characterized in that: the outer diameter of the brazed diamond polycrystalline casting grinding disc of the disc-shaped structure is 100mm-180mm, and the base is The thickness is 1.4mm -4.5mm.
The brazed diamond grinding tool suitable for the grinding of casting flashes according to claim 1, characterized in that the included angle θ between the inclined surface of the grinding disc (2) and the horizontal direction is 5°-15°.
The brazed diamond abrasive tool suitable for the flash grinding of castings according to claim 1, characterized in that: the diamond poly-gold abrasive (6) is brazed on the outer end (1) of the grinding disc and the inclined surface of the grinding disc ( 2) The surface of the top (3) of the flat surface of the grinding disc, the solder is nickel-copper-chromium-borosilicate alloy, and the brazing method is vacuum brazing.
According to claim 5, a brazed diamond abrasive tool suitable for casting flash grinding, characterized in that: the diamond poly-gold abrasive (6) on the edge of the outer end (1) of the grinding disc is ordered and close-packed High-grade abrasives for drilling and cutting, with a grain size of 10-50 mesh, the horizontal distance between two adjacent diamond poly-gold abrasives (6) is 2d-4d, and the longitudinal distance between two adjacent diamond poly-gold abrasives (6) is 2d -5d, where d is the maximum particle size of the diamond polygold abrasive (6).
The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, characterized in that: the diamond poly-gold abrasive (6) on the inclined surface of the grinding disc (2) is in the radial direction along the grinding disc. same.
The brazed diamond abrasive tool suitable for casting flash grinding according to claim 1, characterized in that: the diamond poly-gold abrasive (6) on the top (3) of the flat surface of the polishing disc is a medium-grade turbine-shaped Arranged clusters of abrasives for grinding, with a particle size of 10-50 mesh, and 3-8 diamond polygold abrasives per cluster (6).