CN109822467B - CBN resin binder grinding tool and preparation method thereof - Google Patents
CBN resin binder grinding tool and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a CBN resin binder grinding tool and a preparation method thereof, belonging to the technical field of grinding tools. The CBN resin binder grinding tool is prepared from the following raw materials in percentage by mass: 10-20% of thermosetting resin, 10-25% of cubic boron nitride, 20-40% of metal powder, 5-15% of silicon carbide, 3-10% of calcium sulfate and 5-10% of solid lubricant. According to the CBN resin binder grinding tool, the high fluidity of the thermosetting resin in the curing stage is utilized to uniformly and well infiltrate materials such as metal powder, silicon carbide and calcium sulfate, so that the bonding strength is improved; the CBN resin bonding agent grinding tool is greatly enhanced in strength, good in heat dissipation, grinding efficiency and self-sharpening performance by adding the calcium sulfate, the metal powder, the silicon carbide and the solid lubricant for compounding, and the tissue uniformity of the grinding tool is improved.
Description
Technical Field
The invention relates to a CBN resin binder grinding tool and a preparation method thereof, belonging to the technical field of grinding tools.
Background
Resin grinding wheels are important grinding wheels, and are classified into common resin grinding wheels and superhard resin grinding wheels according to different grinding materials, wherein the common resin grinding wheels are grinding wheels taking common grinding materials such as white corundum, brown corundum and silicon carbide as main grinding components, and the superhard grinding wheels are grinding wheels taking diamond or CBN as main grinding components. The resin CBN grinding wheel has strong wear resistance, pressure resistance, high hardness and good self-sharpening performance, and is widely used for coarse grinding, rough grinding, cutting and free grinding, such as steel ingot grinding, casting deburring and the like.
In the prior art, a chinese patent with an authorization publication number of CN103639908B discloses a superhard CBN grinding tool, which includes a grinding wheel abrasive layer; the grinding wheel abrasive layer is prepared from the following raw materials in parts by weight: 50-55 parts of resin, 5-10 parts of copper powder, 5-8 parts of solid lubricant, 10-15 parts of potassium hexatitanate whisker and 25-30 parts of CBN abrasive; the solid lubricant consists of molybdenum disulfide and graphite. The CBN grinding wheel has the advantages of long service life, less abrasion, stable size and the like, but because the content of resin in a grinding wheel abrasive layer is more and the quantity of powdery particles is too small, the self-sharpening performance of a grinding tool is easy to cause, and the interlocking problems of low grinding efficiency, poor heat dissipation, poor workpiece surface quality, poor form and position precision and the like are caused.
Disclosure of Invention
The invention aims to provide a CBN resin binder grinding tool, which can solve the problems of low grinding efficiency, poor shape and position precision of a grinding object and poor surface quality of the CBN resin binder grinding tool in the prior art.
The invention also provides a preparation method of the CBN resin binder grinding tool.
In order to achieve the purpose, the technical scheme adopted by the CBN resin bond grinding tool is as follows:
a CBN resin binder grinding tool is prepared from the following raw materials in percentage by mass: 10-20% of thermosetting resin, 10-25% of cubic boron nitride, 20-40% of metal powder, 5-15% of silicon carbide, 3-10% of calcium sulfate and 5-10% of solid lubricant.
According to the CBN resin binder grinding tool, thermosetting resin is used as a binder, cubic boron nitride is used as main abrasive particles, and metal powder, silicon carbide, calcium sulfate and a solid lubricant are added, so that the thermosetting resin has high fluidity in a curing stage and can uniformly and well infiltrate powder materials such as the metal powder, the silicon carbide, the calcium sulfate and the like; the addition of the solid lubricant can improve the heat dissipation capability of the grinding tool. Therefore, the CBN resin bonding agent grinding tool has the advantages of high impact strength, good heat dissipation, high grinding efficiency, good self-sharpening performance, excellent integral uniformity and the like.
Preferably, the metal powder is at least one of iron powder, nickel powder, copper powder, silver powder and zinc powder. The metal powder can enhance the heat conduction and heat dissipation of the CBN resin binder grinding tool, and can also act synergistically with calcium sulfate to enhance the strength and wear resistance of the grinding tool organization structure.
Preferably, the thermosetting resin is a high-fluidity thermosetting resin. The thermosetting resin is made into the specification of
The cylindrical resin test sample block is then melted and solidified at 175 ℃, and the sectional area of the maximum diameter position is more than or equal to 0.3cm2The thermosetting resin is the high-fluidity thermosetting resin of the present invention. The use of high-fluidity resin can reduce heatThe use amount of the solid resin is increased, the uniformity of grinding tissues is improved, the bonding firmness of abrasive particles is improved, and the service life of the grinding tool is prolonged.
In order to improve the heat dissipation performance and the self-sharpening performance of the grinding tool, the solid lubricant is preferably at least one of graphite, molybdenum disulfide, boron nitride and silicon nitride.
In order to satisfy the requirements of grinding sharpness and grinding efficiency, the cubic boron nitride preferably has an average particle diameter of 90 to 125 μm.
Preferably, the calcium sulfate is calcium sulfate whisker. The calcium sulfate whiskers can enhance the heat conduction and heat dissipation of the superhard grinding wheel, the combination of various substances in the raw materials is firmer, and the service life of the CBN resin bonding agent grinding tool is prolonged; in addition, the calcium sulfate whisker can enhance the strength of the grinding tool and improve the self-sharpening property of the grinding tool due to the brittleness of the calcium sulfate whisker.
In order to further improve the self-sharpening property of the grinding tool, the length-diameter ratio of the calcium sulfate whiskers is preferably 4-8: 1.
More preferably, the average diameter of the calcium sulfate whiskers is 4-15 μm.
In order to reduce the adverse effect of the calcium sulfate whiskers on the grinding effect of cubic boron nitride, the average length of the calcium sulfate whiskers is 1/3-1/2 of the average grain size of the cubic boron nitride. More preferably, the average length of the calcium sulfate whiskers is 30-60 μm.
In order to achieve good heat dissipation without significantly reducing the strength of the abrasive, the average particle size of the solid lubricant should be larger than that of the metal powder. Preferably, the average particle size of the solid lubricant is 25 to 38 μm.
In order to ensure that the metal powder has good self-sharpening property while enhancing the heat dissipation, strength and wear resistance of the grinding tool, the average grain diameter of the metal powder is not more than 1/2 of the length of the calcium sulfate whisker. More preferably, the average particle size of the metal powder is 15 to 25 μm. More preferably, the average particle size of the metal powder is 15 to 23 μm.
The silicon carbide can increase the self impact strength of the grinding tool system, improve the self-sharpening performance of the grinding tool in the grinding process and play a role in auxiliary grinding. Preferably, the average grain diameter of the silicon carbide is 10-40 μm.
The preparation method of the CBN resin binder grinding tool adopts the technical scheme that:
a preparation method of the CBN resin binder grinding tool comprises the following steps: providing a mixture consisting of the raw materials with the formula amount; and pressing, molding and curing the mixture to obtain the material.
According to the preparation method of the CBN resin binder grinding tool, the mixture is pressed, formed and cured, wherein the mixture can be solidified after cold pressing, and can also be solidified during hot pressing; the preparation method of the CBN resin binder grinding tool is simple in process and convenient to popularize and apply.
In order to improve the heat dissipation, chip containing and chip removal capabilities of the CBN resin binder grinding tool and meet the requirements of heavy load and large-allowance grinding of the grinding tool, preferably, concave holes are pressed on the grinding surface of the CBN resin binder grinding tool through press forming. Concave holes serving as air holes are pressed on the grinding surface by adopting a pressing method, so that the size, the shape and the distribution mode of the air holes are controllable, and the surface quality of the workpiece after grinding is improved conveniently.
In order to facilitate the processing of the concave hole on the grinding surface, the concave hole is preferably in a hemispherical shape or a semi-ellipsoidal shape. Still further preferably, the concave hole is semi-ellipsoidal. The semi-ellipsoidal concave holes can ensure that under the condition of different depths of the grinding material layers, all air holes keep small difference as much as possible, so that the grinding performance of the superhard material grinding wheel is basically kept stable in the grinding process. The cross section of the semi-ellipsoidal concave hole parallel to the grinding surface is circular, and the diameter of the circle with the largest cross section area is 2-5 mm. The deepest part of the semi-ellipsoidal concave hole is 4-10 mm.
In order to further improve the surface quality of the workpiece after grinding, preferably, the concave holes are uniformly pressed on the grinding surface.
Preferably, the metal powder is at least one of iron powder, nickel powder, copper powder, silver powder and zinc powder. More preferably, the metal powder is iron powder.
The thermosetting resin is a high-fluidity thermosetting resin. The thermosetting resin is made into the specification of
The cylindrical resin test sample block is then melted and solidified at 175 ℃, and if the cross section area of the maximum diameter position is more than or equal to 0.3cm2The thermosetting resin is the high-fluidity thermosetting resin of the present invention. The high-flow resin can improve the uniformity of grinding tissues and the bonding firmness of abrasive particles, and can reduce the aggregation of raw materials around the concave hole through the combined action of the thermosetting resin and the solid lubricant in the process of pressing the concave hole on a grinding surface, thereby further improving the uniformity of the grinding tissues. Further preferably, the thermosetting resin is a modified phenolic resin.
Preferably, the average grain diameter of the cubic boron nitride is 90-125 μm.
Preferably, the calcium sulfate is calcium sulfate whisker. The length-diameter ratio of the calcium sulfate whisker is 4-8: 1.
More preferably, the average diameter of the calcium sulfate whiskers is 4-8 μm.
More preferably, the average length of the calcium sulfate whiskers is 1/3-1/2 of the average particle size of the cubic boron nitride. More preferably, the average length of the calcium sulfate whiskers is 30-60 μm.
The solid lubricant is at least one of graphite, molybdenum disulfide, boron nitride and silicon nitride.
Preferably, the average particle diameter of the solid lubricant should be larger than the average particle diameter of the metal powder. More preferably, the average particle size of the solid lubricant is 25 to 38 μm.
Preferably, the average grain diameter of the silicon carbide is 10-40 μm.
Preferably, the average particle size of the metal powder is not greater than 1/2 of the length of the calcium sulfate whisker. More preferably, the average particle size of the metal powder is 15 to 25 μm. More preferably, the average particle size of the metal powder is 15 to 23 μm.
Drawings
Fig. 1 is a schematic view of an upper platen used in example 1 of a method of manufacturing a CBN resin bond abrasive tool;
fig. 2 is a partial photograph of an upper platen used in example 1 of the method of manufacturing a CBN resin bonded abrasive tool;
wherein, 1-an ellipsoidal projection.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
The thermosetting resin adopted in the specific embodiment is a product with the model number of PF2893 produced by Jinan Shengquan group Limited company, and the specification of the thermosetting resin is that
The cylindrical resin test sample block is then melted and solidified at 175 ℃, and the sectional area of the maximum diameter position is more than or equal to 0.3cm2。
Example 1 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 10% of thermosetting resin, 25% of cubic boron nitride, 40% of metal powder, 5% of green silicon carbide, 10% of calcium sulfate whisker and 10% of solid lubricant; the average particle size of the cubic boron nitride is 90 mu m, the metal powder is iron powder with the average particle size of 15 mu m, the average particle size of the green silicon carbide is 10 mu m, the average length of the calcium sulfate whisker is 30 mu m, the average diameter of the calcium sulfate whisker is 4 mu m, and the solid lubricant is graphite powder with the average particle size of 25 mu m.
Example 2 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 20% of thermosetting resin, 10% of cubic boron nitride, 37% of metal powder, 15% of green silicon carbide, 3% of calcium sulfate whisker and 5% of solid lubricant; the average particle size of the cubic boron nitride is 90 mu m, the metal powder is iron powder with the average particle size of 20 mu m, the average particle size of the green silicon carbide is 40 mu m, the average length of the calcium sulfate whisker is 46 mu m, the average diameter of the calcium sulfate whisker is 6 mu m, and the solid lubricant is graphite powder with the average particle size of 38 mu m.
Example 3 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 20% of thermosetting resin, 25% of cubic boron nitride, 20% of metal powder, 15% of green silicon carbide, 10% of calcium sulfate whisker and 10% of solid lubricant; the average particle size of the cubic boron nitride is 125 micrometers, the metal powder is iron powder with the average particle size of 23 micrometers, the average particle size of the green silicon carbide is 25 micrometers, the average length of the calcium sulfate whisker is 60 micrometers, the average diameter of the calcium sulfate whisker is 15 micrometers, and the solid lubricant is graphite powder with the average particle size of 38 micrometers.
Example 4 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 10% of thermosetting resin, 25% of cubic boron nitride, 40% of metal powder, 5% of green silicon carbide, 10% of calcium sulfate whisker and 10% of solid lubricant; the average particle size of cubic boron nitride is 125 μm, the metal powder is iron powder with the average particle size of 17 μm, the average particle size of green silicon carbide is 25 μm, the average length of calcium sulfate whisker is 60 μm, the average diameter of calcium sulfate whisker is 9 μm, and the solid lubricant is molybdenum disulfide with the average particle size of 30 μm.
Example 5 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 20% of thermosetting resin, 10% of cubic boron nitride, 37% of metal powder, 15% of green silicon carbide, 3% of calcium sulfate whisker and 5% of solid lubricant; the average particle size of cubic boron nitride is 107 mu m, the metal powder is iron powder with the average particle size of 23 mu m, the average particle size of green silicon carbide is 35 mu m, the average length of calcium sulfate whisker is 40 mu m, the average diameter of calcium sulfate whisker is 10 mu m, and the solid lubricant is molybdenum disulfide with the average particle size of 25 mu m.
Example 6 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the embodiment is a grinding disc, and is made of the following raw materials in percentage by mass: 20% of thermosetting resin, 25% of cubic boron nitride, 20% of metal powder, 15% of green silicon carbide, 10% of calcium sulfate whisker and 10% of solid lubricant; the average particle size of cubic boron nitride is 107 mu m, the metal powder is iron powder with the average particle size of 20 mu m, the average particle size of green silicon carbide is 34 mu m, the average length of calcium sulfate whisker is 55 mu m, the average diameter of the calcium sulfate whisker is 11 mu m, and the solid lubricant is molybdenum disulfide with the average particle size of 29 mu m.
Comparative example 1 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the comparative example is a grinding disc, and is prepared by uniformly mixing cubic boron nitride and white corundum with melamine modified phenolic resin according to the mass ratio of 1:2:1.3, and performing hot press molding; the average grain size of the cubic boron nitride used was 107 μm, and the average grain size of the white corundum was 40 μm.
Comparative example 2 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the comparative example is a large-pore resin binder grinding wheel trial-manufactured by a casting method, and comprises the following steps:
1) selecting raw materials such as 25 parts of resin adhesive, 30 parts of grinding material, 0.7 part of foaming agent, 23 parts of diluent, 2 parts of surfactant, 0.4 part of defoaming agent and the like; the abrasive is cubic boron nitride, and the average grain diameter is 125 mu m; the resin adhesive is epoxy resin liquid;
2) adding a resin adhesive and a diluent into a constant-temperature container at 50 ℃, stirring for 30min at the rotating speed of 45rpm, adding an abrasive and a surfactant, stirring for 120min at the rotating speed of 80rpm, sequentially adding a foaming agent and a defoaming agent, and stirring for 25min at the rotating speed of 150 rpm; and (3) injecting the slurry into a constant-temperature mould, then putting the mould into a constant-temperature oven at 45 ℃ for baking, and completely curing and molding the slurry in the mould to obtain the finished product.
Comparative example 3 of CBN resin bond abrasive tool
The CBN resin binder grinding tool of the comparative example is a grinding tool and is prepared from the following raw materials in percentage by mass: 15% of thermosetting resin, 25% of cubic boron nitride, 40% of metal powder, 5% of green silicon carbide, 10% of calcium sulfate whisker and 10% of solid lubricant; the average particle size of cubic boron nitride was 107 μm, the thermosetting resin and CBN resin bond grinding tool example 1, the metal powder was iron powder having an average particle size of 20 μm, the average length of calcium sulfate whiskers was 55 μm, the average diameter of calcium sulfate whiskers was 11 μm, and the solid lubricant was graphite powder having an average particle size of 29 μm.
The CBN resin bonded abrasive tools of the above examples 1 to 6 and comparative example 3 can be prepared by the following preparation method of the CBN resin bonded abrasive tool of example 1 or example 2. In example 1 of the method for manufacturing a CBN resin binder grinding tool, the die used for compression molding includes a die cavity, the die cavity is defined by a cylindrical mandrel, a die sleeve for sleeving the mandrel, an upper pressing plate and a lower pressing plate, the upper pressing plate is circular as shown in fig. 1 and fig. 2, and a plurality of semi-ellipsoidal protrusions 1 for pressing concave holes on a grinding surface are arranged on the upper pressing plate; the plurality of bulges are divided into a plurality of groups, the bulges in each group are sequentially arranged into circles, each circle is a concentric circle, and the intervals of adjacent circles along the radius direction are the same; the intervals between adjacent bulges in each group are the same and are approximately the same as the intervals between adjacent circles in the radial direction; the maximum section of the plane where the semi-ellipsoidal bulge is parallel to the upper pressure plate is a circle with the radius of Xmm, and the vertical distance from the highest point of the bulge to the plane where the bulge is located on the upper pressure plate is Ymm; the mandrel, the die sleeve and the lower pressing plate are integrally arranged. Examples 1 to 6 of CBN resin binder grinding tool when prepared in example 1 of the method for preparing a CBN resin binder grinding tool, the values of X and Y are shown in table 1, respectively.
TABLE 1 values of X and Y during preparation of CBN resin binder abrasive tools
| Value taking | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Comparative example |
| X/ |
1 | 2.5 | 2 | 2 | 2 | 2 | 2 |
| Y/mm | 4 | 10 | 7 | 7 | 7 | 7 | 7 |
Example 1 method for preparing CBN resin binder grinding tool
The preparation method of the CBN resin binder grinding tool of the embodiment comprises the following steps:
1) uniformly mixing the raw materials according to the formula ratio to obtain a mixture;
2) putting the obtained mixture into an open cavity defined by a mandrel, a die sleeve and a lower pressing plate, uniformly and compactly dispersing the molding material in the open cavity through traditional process procedures such as material spreading, material plowing, material scraping and the like, uniformly coating a release agent on one surface of the upper pressing plate provided with a protrusion by adopting a spray release agent, and then covering the upper pressing plate into the open cavity; when the upper pressing plate is covered into the opening die cavity, the surface provided with the bulge faces the opening die cavity;
3) calculating the pushing distance of the sizing block, setting a temperature raising program, and carrying out hot pressing for 8 hours at 175 ℃ by using a hot press; after the sizing block is pushed in, the sizing block is placed on a die sleeve of a die to control the height of the grinding disc, so that the grinding disc is molded according to the designed volume and tissue hardness;
4) and after the hot pressing is finished, releasing the pressure, demolding to obtain a blank, and processing the blank by the working procedures of turning, milling, clamping, grinding, dynamic balancing and the like to obtain the finished product.
Example 2 of the method for preparing CBN resin bond abrasive tools
The preparation method of the CBN resin binder grinding tool of the embodiment comprises the following steps:
1) uniformly mixing the raw materials according to the formula ratio to obtain a mixture;
2) uniformly mixing the obtained mixture, putting the mixture into a conventional die, and carrying out hot pressing for 8 hours at 175 ℃ by using a hot press;
3) and after the hot pressing is finished, releasing the pressure, demolding to obtain a blank, and processing the blank by the working procedures of turning, milling, clamping, grinding, dynamic balancing and the like to obtain the finished product.
Experimental example 1
The grinding test was carried out on a stainless steel part of 40 × 40mm (length × width) using the grinding disc produced by the method of example 1 of the method for producing a CBN resin bonded abrasive tool and the grinding wheel produced in comparative example 2 of the CBN resin bonded abrasive tool, respectively, the diameter of the grinding disc (grinding wheel) was 400mm, the rotation speed of the grinding disc (grinding wheel) was 1200rpm, the workpiece passing frequency was 100 pieces/min, and the grinding test results were shown in table 2 using an oily grinding fluid.
Table 2 grinding test results of grinding tool using CBN resin binder
| Conditions of burn | Maximum amount of single removal | Parallelism of grinding work | Scratch ratio of workpiece | |
| Example 1 | Minor burns | 0.35mm | 0.024mm | 1.22％ |
| Example 2 | No burn | 0.28mm | 0.033mm | 1.41％ |
| Example 3 | No burn | 0.47mm | 0.019mm | 0.82％ |
| Example 4 | No burn | 0.31mm | 0.022mm | 1.39％ |
| Example 5 | Minor burns | 0.30mm | 0.027mm | 1.44％ |
| Example 6 | Minor burns | 0.39mm | 0.021mm | 1.03％ |
| Comparative example 1 | Multiple burns | 0.18mm | 0.039mm | 5.22％ |
| Comparative example 2 | No burn | 0.21mm | 0.052mm | 1.00％ |
| Comparative example 3 | Minor burns | 0.33mm | 0.021mm | 1.28％ |
Experimental example 2
The grinding discs of examples 1 to 6 and comparative example 1, which were prepared by the method of example 2 of the method for preparing a CBN resin binder grinding tool, were tested for properties such as burn, single maximum removal, parallelism of grinding workpieces, chip removal and chip dissolution, the diameter of the grinding disc was 400mm, the rotational speed of the grinding disc was 1200rpm, the workpiece passing frequency was 100 chips/min, and an oily grinding fluid was used, and the test results are shown in table 3.
Table 3 performance test results of CBN resin binder abrasive tool
| Conditions of burn | Maximum amount of single removal | Parallelism of grinding work | Scratch ratio of workpiece | |
| Example 1 | Minor burns | 0.26mm | 0.025mm | 2.29％ |
| Example 2 | Minor burns | 0.23mm | 0.027mm | 2.14％ |
| Example 3 | Minor burns | 0.36mm | 0.024mm | 1.73％ |
| Example 4 | No burn | 0.30mm | 0.023mm | 2.02％ |
| Example 5 | Minor burns | 0.27mm | 0.031mm | 1.21％ |
| Example 6 | Minor burns | 0.21mm | 0.033mm | 1.49％ |
| Comparative example 3 | Multiple burns | 0.18mm | 0.040mm | 3.24％ |
As can be seen from the data in table 3, even though the abrasive tool provided in the specific embodiment is not used, compared with a general CBN resin bond abrasive tool, the CBN resin bond abrasive tool of the present invention can also enable a ground workpiece to have a lower burn and scratch ratio, achieve a better parallelism requirement and a larger single removal amount, and have a better heat dissipation capability, a chip dissolving and removing capability, a more uniform structure and a better grinding sharpness.
Claims (4)
1. A CBN resin binder grinding apparatus is characterized in that: the material is prepared from the following raw materials in percentage by mass: 10-20% of thermosetting resin, 10-25% of cubic boron nitride, 20-40% of metal powder, 5-15% of silicon carbide, 3-10% of calcium sulfate and 5-10% of solid lubricant;
the thermosetting resin is high-fluidity thermosetting resin, and the high-fluidity thermosetting resin meets the following conditions: preparing thermosetting resin into cylindrical resin test sample block with specification of 5 x 5mm, melting and solidifying at 175 deg.C, and cross section area of maximum diameter position is not less than 0.3cm2；
The calcium sulfate is calcium sulfate whisker; the solid lubricant is at least one of graphite, molybdenum disulfide, boron nitride and silicon nitride;
the average grain diameter of the cubic boron nitride is 90-125 mu m; the length-diameter ratio of the calcium sulfate whisker is 4-8: 1, and the average length of the calcium sulfate whisker is 1/3-1/2 of the average particle size of the cubic boron nitride; the average particle size of the metal powder is not more than 1/2 of the length of the calcium sulfate whisker; the solid lubricant has an average particle diameter larger than that of the metal powder.
2. A method of making the CBN resin bonded abrasive tool of claim 1, wherein: the method comprises the following steps: providing a mixture consisting of the raw materials with the formula amount; and pressing, molding and curing the mixture to obtain the material.
3. The method of making the CBN resin bonded abrasive tool as defined in claim 2, wherein: and pressing concave holes on the grinding surface of the CBN resin binder grinding tool by pressing.
4. The method of making the CBN resin bonded abrasive tool as defined in claim 3, wherein: the concave hole is hemispherical or semi-ellipsoidal.
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| CN104493731A (en) * | 2014-12-18 | 2015-04-08 | 广东奔朗新材料股份有限公司 | Super-hard material grinding apparatus using calcium sulfate whisker as binding agent and preparation method thereof |
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| GB711496A (en) * | 1950-07-19 | 1954-07-07 | Gardner Machine Co | Improvements in or relating to molded abrasive disks and methods of making the same |
| US6986705B2 (en) * | 2004-04-05 | 2006-01-17 | Rimpad Tech Ltd. | Polishing pad and method of making same |
| US8074748B1 (en) * | 2009-02-20 | 2011-12-13 | Us Synthetic Corporation | Thermally-stable polycrystalline diamond element and compact, and applications therefor such as drill bits |
| CN103341918B (en) * | 2013-07-08 | 2016-04-13 | 长沙岱勒新材料科技股份有限公司 | A kind of resin fret saw and preparation method thereof |
| CN103613389B (en) * | 2013-11-29 | 2015-11-25 | 宁波伏尔肯机械密封件制造有限公司 | Sinter of Boron Carbide Ceramics preparation method |
| CN103770030A (en) * | 2013-12-31 | 2014-05-07 | 郑州磨料磨具磨削研究所有限公司 | Resin binder superhard material grinding wheel for roller high-speed grinding and manufacture method thereof |
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| JP2003300165A (en) * | 2002-04-03 | 2003-10-21 | Toyoda Van Moppes Ltd | Segment type grinding wheel |
| CN104493731A (en) * | 2014-12-18 | 2015-04-08 | 广东奔朗新材料股份有限公司 | Super-hard material grinding apparatus using calcium sulfate whisker as binding agent and preparation method thereof |
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