CN104802104B - A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel - Google Patents

A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel Download PDF

Info

Publication number
CN104802104B
CN104802104B CN201510234075.0A CN201510234075A CN104802104B CN 104802104 B CN104802104 B CN 104802104B CN 201510234075 A CN201510234075 A CN 201510234075A CN 104802104 B CN104802104 B CN 104802104B
Authority
CN
China
Prior art keywords
agent
nano
binding agent
grinding wheel
grade ceramic
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.)
Active
Application number
CN201510234075.0A
Other languages
Chinese (zh)
Other versions
CN104802104A (en
Inventor
刘瑞平
贺鹏
苏伟明
邓福铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology Beijing CUMTB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology Beijing CUMTB
Priority to CN201510234075.0A priority Critical patent/CN104802104B/en
Publication of CN104802104A publication Critical patent/CN104802104A/en
Application granted granted Critical
Publication of CN104802104B publication Critical patent/CN104802104B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING, OR SHARPENING
    • B24D18/00Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses

Abstract

The present invention prepares the extra hard material grinding wheel of nano-grade ceramic binding agent using one-step method, the raw material used is the corresponding water-soluble nitrate of ceramic powder or chlorate of required preparation, superhard abrading agent and pore creating material, by raw material, monomer and crosslinking agent are soluble in water, initiator is added and catalyst aggregates into nanoscale three-dimensional space network under the conditions of constant temperature (20-80 DEG C) and form gel later, these water-soluble nitrates or chlorination salt out during gel drying, and it is limited to form nanocrystal by this three-dimensional space network, it is evenly distributed in superhard abrading agent in vitrified bond matrix simultaneously, it is added that one or more water solubilitys are preferable and lower melting-point organic matter simultaneously, it is substantially reduced contraction when wet gel low temperature drying, and it melts or decomposes earlier in xerogel calcination process, gradually it is sustained Stress is concentrated, and is solved the problems, such as nano-grade ceramic binding agent abnormal growth in the subsequent sintering process using Fast Sintering technology, is prepared the nano-grade ceramic binding agent extra hard material grinding wheel of function admirable.

Description

A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel
Technical field
The present invention relates to superhard material and abrasive grinding field, provides and a kind of prepare nano-grade ceramic binding agent superhard material sand The new method of wheel.
Background technique
Since superhard material (such as diamond, cubic boron nitride) to have that hardness is high, wearability is good, thermal stability is good etc. excellent Point is widely applied in all kinds of grinding tools.In all kinds of ultrahard material grinding wheel bonds, metallic bond is from sharp Property is poor, easily adheres when processing metal material, and resinoid bond thermal stability is poor, and vitrified bond is between metal knot Between mixture and resinoid bond, heat resisting temperature is higher, self-sharpening is preferable, intensity is high, wearability is good.Ceramic bond super-hard Material grinding wheel not only has that cutting is sharp, grinding force is small, high production efficiency, long service life, to be easy to shaping and dressing, grinding smart Workpiece temperature is low when spending the advantages that high, but also having grinding, can eliminate residual tension and generate residual compressive stress, make workpiece The characteristics of durability improves 30~50%.Therefore, the conduct of ceramic bond super-hard material grinding wheel is a kind of at a high speed, efficient, high-precision, low The high-performance grinding tool product of cost, low pollution, becomes the research and development emphasis of world's grinding tool in recent years.
High-performance ceramic bonding agent is the key that prepare high-performance ceramic bonding agent extra hard material grinding wheel.With surpassing in recent years The development of high speed extra hard material grinding wheel, to the performance of vitrified bond, more stringent requirements are proposed, that is, bonding agent is required to have height Intensity, low refractoriness, good gas porosity, wellability, craftsmanship, chemical stability, and thermally expanded with superhard abrading agent and be Number matching, however the defects such as the generally existing sintering temperature of traditional vitrified bond is high, intensity is low.Nano-grade ceramic binding agent due to The advantages that its granularity is small, large specific surface area, sintering temperature is low, intensity is high, good toughness is expected to solve current traditional ceramics bonding agent Contradictory problems between sintering temperature and low and high intensity improve the performance of ceramic bond super-hard material grinding wheel, further widen The application range of extra hard material grinding wheel.
Recent domestic has carried out exploratory development to nano-grade ceramic binding agent.Compared with traditional vitrified bond, to the greatest extent Pipe nano-grade ceramic binding agent has the advantages that intensity height, good toughness, sintering temperature are low etc., but since its granularity is smaller, specific surface area Greatly, there are still some problems in the preparation process of extra hard material grinding wheel, is in particular in the following aspects: (1) due to receiving The fine granularity and large surface area of rice vitrified bond, appearance is bulk, and density is lower, this may bring centainly the molding of grinding tool Difficulty, green density and sintering strength are lower, shrink it is larger.(2) appearance is compared in nano-grade ceramic binding agent one pack system powder preparation Easily, how to guarantee its favorable dispersibility during subsequent ball milling mixes and be uniformly distributed.(3) due to the activity of nano particle It is higher, easily occur the abnormal growth of crystal grain in sintering process and be difficult to the disadvantages of densifying, therefore, to obtain truly Nano ceramics structural material is not easy to.(4) compared with traditional ceramics bonding agent, to the structure of stomata in nano-grade ceramic binding agent Relationship between (such as shape, content and size) and its performance lacks system in-depth study.
Based on the above analysis, if direct in-situ can generate nano-ceramic particle during preparation and be allowed to and superhard material Material is built into the nano-grade ceramic binding agent extra hard material grinding wheel with ideal structure and performance, it would be possible to solve current nanometer pottery The problem of porcelain bonding agent extra hard material grinding wheel preparation and application.
Summary of the invention
The object of the present invention is to provide a kind of methods that one-step method prepares nano-grade ceramic binding agent extra hard material grinding wheel.This hair Bright preparation process is simple, and the requirement to equipment and process conditions is low, is conducive to promote and apply.
A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel, it is characterised in that preparation process includes following step It is rapid:
(1) 2h is mixed in deionized water, monomer and crosslinking agent first, in accordance with following mass ratio, be configured to clear pre- Mixed liquid, deionized water: monomer: crosslinking agent=60~90:9.5~30:0.5~10, wherein the monomer is acrylamide, institute Stating crosslinking agent is N, N '-methylene-bisacrylamide;
(2) organic slow-release agent is added in above-mentioned premixed liquid, stirs 2h, the additional amount of organic slow-release agent is premixed liquid quality 0.5-20%;
(3) the starting material inorganic salt of superhard abrading agent, pore creating material and vitrified bond is continuously added, 2-6h is stirred, until Obtain finely dispersed slurry, wherein the gross mass of the superhard abrading agent of addition, pore creating material and inorganic salts is premixed liquid quality 20~60%, the mass ratio of superhard abrading agent, pore creating material and inorganic salts is 45~60:5~20:20~50, described superhard Material abrasive material is one or both of diamond or cubic boron nitride, and the pore creating material is carbon ball, PMMA microsphere or PS microballoon One of or it is a variety of, the inorganic salts be aluminum nitrate, zirconium oxychloride, zinc chloride, sodium chloride or potassium chloride in it is two or more;
(4) catalyst and initiator are sequentially added in the slurry that step (3) obtains, injects mold after mixing evenly, Polymerization reaction occurs for single body and crosslinking agent when 20 DEG C~80 DEG C of temperature, forms gel green body;
(5) green body for obtaining step (4) demoulds, dry 1 under the conditions of 40 DEG C~80 DEG C, humidity are greater than 50%rh~ 5d obtains xerogel, or is completely dried in -40 DEG C~-50 DEG C, vacuum freeze drier of the vacuum degree less than 0.1Pa, obtains To xerogel;
(6) xerogel that step (5) obtains is put into Muffle furnace, in air atmosphere or nitrogen, argon gas protect gas Under atmosphere, rise to 200 DEG C~300 DEG C with the heating rate of 0.2~5 DEG C/min, keep the temperature 0.5~3 hour, then with 0.2~5 DEG C/ The heating rate of min rises to 400~650 DEG C, keeps the temperature 1~6 hour, finally rises to 700 with the heating rate of 0.5~10 DEG C/min DEG C~1000 DEG C between, soaking time is 0.5~3 hour, finally obtained nano-grade ceramic binding agent extra hard material grinding wheel.
The organic slow-release agent is one of sucrose, fructose, urea or glucose or a variety of.,
The catalyst is N, N, N ', the aqueous solution of N '-tetramethylethylenediamine, concentration of polymer solution is 10~50%, Additional amount is the 1~10% of premixed liquid quality.
The initiator is the aqueous solution of ammonium persulfate or potassium peroxydisulfate, and concentration of polymer solution is 10~50%, is added Amount is the 5~20% of premixed liquid quality.
Compared with prior art, the present invention its significant advantage is:
(1) extra hard material grinding wheel of nano-grade ceramic binding agent is prepared using one-step method, the raw material used is required preparation The corresponding water-soluble nitrate of ceramic powder or chlorate, superhard abrading agent and pore creating material etc., by raw material (nitrate Or chlorate etc.), monomer (acrylamide) and crosslinking agent (N, N '-methylene-bisacrylamide) it is soluble in water, be added initiator (ammonium persulfate) aggregates into nanoscale three-dimensional space network under the conditions of constant temperature (20-80 DEG C) later and forms gel, gel These water-soluble nitrates or chlorination salt out in dry process, and limited by this three-dimensional space network to be formed it is nanocrystalline Grain, while it is evenly distributed in superhard abrading agent in vitrified bond matrix.
(2) one or more water solubilitys are preferable and lower melting-point organic matter by being added in gel, which can It with the contraction being substantially reduced when wet gel low temperature drying, and melts or decomposes earlier in xerogel calcination process, gradually delay Stress concentration is released, solves the problems, such as to crack in nano-grade ceramic binding agent cBN grinding wheel sintering process.
(3) it is asked simultaneously using the nano-grade ceramic binding agent abnormal growth that Fast Sintering technology solves in the subsequent sintering process Topic, is successfully introduced into the technique preparation field of nano-grade ceramic binding agent extra hard material grinding wheel, the nano ceramics knot prepared The flexural strength of mixture extra hard material grinding wheel is 100~120MPa, and the porosity is 0~30%.The technique have simple process, at This lower advantage.
Specific embodiment
The present invention is further illustrated using embodiment below.
Embodiment 1: at room temperature, by acrylamide monomer, N, N'- methylene-bisacrylamide and deionized water are pressed It is configured to the clear solution of 200ml according to the mass ratio of 30:10:60,1g sucrose, stirring is added according to the 0.5% of premixed liquid quality 1h obtains premixed liquid.3g zirconium oxychloride, 0.72g aluminum nitrate, 4.4g sodium chloride, 24g cubes of nitridation are added into above-mentioned premixed liquid Boron, 8g PMMA microsphere, stirring 4h obtain finely dispersed solution.The 20wt% tetramethyl of 0.05ml is sequentially added into solution The 40wt% ammonium persulfate aqueous solution of ethylenediamine solution and 0.4ml, injects mold after mixing evenly, is formed under 40 DEG C of constant temperature solidifying Glue.Then by wet gel 40 DEG C, humidity be 60%rh under conditions of it is 3 days dry, obtain xerogel.Gained xerogel is in Muffle 600 DEG C of heat preservation 4h are risen to the heating rate of 0.3 DEG C/min in furnace, then rise to 1000 DEG C with the heating rate of 1 DEG C/min, are protected Warm 2h.Finally obtain the nano-grade ceramic binding agent cubic boron nitride abrasive wheel that the porosity is about 28%.
Embodiment 2: at room temperature, by acrylamide monomer, N, N'- methylene-bisacrylamide and deionized water are pressed It is configured to the clear solution of 200ml according to the mass ratio of 9.5:0.5:90,40g fructose is added according to the 20% of premixed liquid quality, stirs It mixes 2h and obtains premixed liquid.4g sodium chloride, 10g aluminum nitrate, 3g zirconium oxychloride, 18g diamond, 2g carbon are added into above-mentioned premixed liquid Ball, stirring 3h obtain finely dispersed solution.Sequentially added into solution 0.04ml 20wt% tetramethylethylenediamine solution and The 40wt% ammonium persulfate aqueous solution of 0.6ml, injects mold after mixing evenly, forms gel under 60 DEG C of constant temperature.It then will be wet Gel, to dry 5 days under conditions of 90%rh, obtains xerogel in 80 DEG C, humidity.Gained xerogel in Muffle furnace with 2 DEG C/ The heating rate of min rises to 300 DEG C of heat preservation 0.5h, continues to rise to 550 DEG C of heat preservation 4h, then with the heating rate liter of 2 DEG C/min To 800 DEG C, 3h is kept the temperature.Finally obtain the nano-grade ceramic binding agent skive that the porosity is about 2~3%.
Embodiment 3: at room temperature, by acrylamide monomer, N, N'- methylene-bisacrylamide and deionized water are pressed It is configured to the clear solution of 200ml according to the mass ratio of 15:0.6:84.4,20g glucose is added according to the 10% of premixed liquid quality, Stirring 1h obtains premixed liquid.3g zirconium oxychloride, 0.72g aluminum nitrate, 4.4g potassium chloride, 10g cubes are added into above-mentioned premixed liquid Boron nitride, 14g diamond, 8g PS microballoon, stirring 4h obtain finely dispersed solution.Sequentially add 0.1ml's into solution The 40wt% ammonium persulfate aqueous solution of 20wt% tetramethylethylenediamine aqueous solution and 0.2ml, injects mold, 40 after mixing evenly Form gel under DEG C constant temperature, later by wet gel under conditions of 50 DEG C, humidity are greater than 60%rh 5 days dry, gained xerogel 200 DEG C of heat preservation 3h are risen to the heating rate of 0.5 DEG C/min in Muffle furnace, then rise to 750 with the heating rate of 5 DEG C/min DEG C, keep the temperature 4h.Finally obtain nano-grade ceramic binding agent diamond-cubic boron nitride complex sand that the porosity is about 25~28% Wheel.

Claims (4)

1. a kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel, it is characterised in that preparation process includes following step It is rapid:
(1) 2h is mixed in deionized water, monomer and crosslinking agent first, in accordance with following mass ratio, is configured to clear premix Liquid, deionized water: monomer: crosslinking agent=60~90:9.5~30:0.5~10, wherein the monomer is acrylamide, described Crosslinking agent is N, N '-methylene-bisacrylamide;
(2) organic slow-release agent is added in above-mentioned premixed liquid, stirs 2h, the additional amount of organic slow-release agent is premixed liquid quality 0.5-20%;
(3) inorganic salts of superhard abrading agent, pore creating material and vitrified bond raw material are continuously added, 2-6h is stirred, until obtaining Finely dispersed slurry, wherein the gross mass of the superhard abrading agent of addition, pore creating material and inorganic salts is the 20 of premixed liquid quality ~60%, the mass ratio of superhard abrading agent, pore creating material and inorganic salts is 45~60:5~20:20~50, the superhard material Abrasive material is one or both of diamond or cubic boron nitride, and the pore creating material is in carbon ball, PMMA microsphere or PS microballoon One or more, the inorganic salts are two or more in aluminum nitrate, zirconium oxychloride, zinc chloride, sodium chloride or potassium chloride;
(4) catalyst and initiator are sequentially added in the slurry that step (3) obtains, injects mold after mixing evenly, at 20 DEG C Polymerization reaction occurs for single body and crosslinking agent when~80 DEG C of temperature, forms gel green body;
(5) the gel green body that step (4) obtains is demoulded, dry 1 under the conditions of 40 DEG C~80 DEG C, humidity are greater than 50%rh ~5d obtains xerogel, or is completely dried in -40 DEG C~-50 DEG C, vacuum freeze drier of the vacuum degree less than 0.1Pa, Obtain xerogel;
(6) xerogel that step (5) obtains is put into Muffle furnace, in air atmosphere or under nitrogen, argon atmosphere, 200 DEG C~300 DEG C are risen to the heating rate of 0.2~5 DEG C/min, 0.5~3 hour is kept the temperature, then with 0.2~5 DEG C/min's Heating rate rises to 400~650 DEG C, keeps the temperature 1~6 hour, finally with the heating rate of 0.5~10 DEG C/min rise to 700 DEG C~ Between 1000 DEG C, soaking time is 0.5~3 hour, finally obtained nano-grade ceramic binding agent extra hard material grinding wheel.
2. preparation method according to claim 1, it is characterised in that: the organic slow-release agent be sucrose, fructose, urea or One of glucose is a variety of.
3. preparation method according to claim 1, it is characterised in that: the catalyst is N, N, N ', N '-tetramethyl second two The aqueous solution of amine, concentration of polymer solution are 10~50%, and additional amount is the 1~10% of premixed liquid quality.
4. preparation method according to claim 1, it is characterised in that: the initiator is ammonium persulfate or potassium peroxydisulfate Aqueous solution, concentration of polymer solution are 10~50%, and additional amount is the 5~20% of premixed liquid quality.
CN201510234075.0A 2015-05-11 2015-05-11 A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel Active CN104802104B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510234075.0A CN104802104B (en) 2015-05-11 2015-05-11 A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510234075.0A CN104802104B (en) 2015-05-11 2015-05-11 A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel

Publications (2)

Publication Number Publication Date
CN104802104A CN104802104A (en) 2015-07-29
CN104802104B true CN104802104B (en) 2019-01-08

Family

ID=53687510

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510234075.0A Active CN104802104B (en) 2015-05-11 2015-05-11 A kind of preparation method of nano-grade ceramic binding agent extra hard material grinding wheel

Country Status (1)

Country Link
CN (1) CN104802104B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105127914A (en) * 2015-08-27 2015-12-09 安徽威铭耐磨材料有限公司 High-surface smoothness CBN grinding wheel with ultrafine granularity and containing nanometer carbon spheres and preparation method thereof
CN105234835A (en) * 2015-08-27 2016-01-13 安徽威铭耐磨材料有限公司 Nano-niobium carbide contained dispersion strengthening high-corrosion-resistance superfine-grained cubic boron nitride (CBN) grinding wheel and preparation method thereof
CN105171624A (en) * 2015-09-23 2015-12-23 滁州职业技术学院 Nano ceramic bond diamond wheel containing tetrapod-like zinc oxide whiskers reinforced and preparing method of nano ceramic bond diamond wheel
CN105345679A (en) * 2015-09-24 2016-02-24 安徽威铭耐磨材料有限公司 Basalt fiber enhanced nano-vitrified bond diamond grinding wheel and preparation method thereof
CN105345681A (en) * 2015-09-24 2016-02-24 安徽威铭耐磨材料有限公司 Diamond grinding wheel with nano ceramic bonds containing explosion-proof fibers and manufacturing method thereof
CN105983912A (en) * 2015-09-24 2016-10-05 安徽威铭耐磨材料有限公司 Ceramic fiber reinforced nano ceramic bond diamond grinding wheel and preparation method thereof
CN105252434A (en) * 2015-09-24 2016-01-20 安徽威铭耐磨材料有限公司 Aramid fiber reinforced nano ceramic binding agent diamond grinding wheel and manufacturing method thereof
CN105345680A (en) * 2015-09-24 2016-02-24 安徽威铭耐磨材料有限公司 Carbon nanofiber enhanced nano-vitrified bond diamond grinding wheel and preparation method thereof
CN105252433A (en) * 2015-09-24 2016-01-20 安徽威铭耐磨材料有限公司 Magnesium borate whisker reinforced nano ceramic binding agent diamond grinding wheel and manufacturing method thereof
CN105252436A (en) * 2015-10-09 2016-01-20 芜湖市鸿坤汽车零部件有限公司 Cerium and silicon composite oxidization resin grinding wheel and preparation method thereof
CN105563353B (en) * 2016-02-18 2018-05-22 郑州磨料磨具磨削研究所有限公司 A kind of preparation method of vitrified bond fine granularity grinding tool
CN106944937A (en) * 2017-03-17 2017-07-14 衢州学院 A kind of preparation method of the diamond abrasive tool pellet of use porous ceramic skeleton resin reinforcing
CN109093527A (en) * 2018-09-04 2018-12-28 芜湖瑞德机械科技有限公司 High rigidity PCD composite sheet bonding agent and preparation method thereof
CN109159035A (en) * 2018-09-05 2019-01-08 扬中市飞宇磨具有限公司 A kind of high-precision auto parts and components processing grinding abrasive disk and its production technology
CN110653373A (en) * 2019-10-30 2020-01-07 鄂信钻石新材料股份有限公司 Matrix material for porous diamond grinding tool and preparation method
CN111331527B (en) * 2020-03-04 2021-04-06 燕山大学 Ultra-high porosity ceramic bond diamond ultra-precision grinding tool and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343656A (en) * 1989-08-01 1994-09-06 Hurth Maschinen Und Werkzeuge G.M.B.H. Grinding tool and the like made of a ceramic material coated with extremely hard abrasive granules
JP2004181597A (en) * 2002-12-05 2004-07-02 Toyoda Mach Works Ltd Metal-bonded grinding wheel and its method of manufacture
CN102906018A (en) * 2010-04-14 2013-01-30 贝克休斯公司 Method of making a diamond particle suspension and method of making a polycrystalline diamond article therefrom
CN103586792A (en) * 2013-11-26 2014-02-19 常熟市巨力砂轮有限责任公司 Method for preparing ceramic CBN grinding wheel
CN104385154A (en) * 2014-09-12 2015-03-04 陕西德赛新材料科技有限公司 Preparation method of low-temperature ceramic bond for grinding tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343656A (en) * 1989-08-01 1994-09-06 Hurth Maschinen Und Werkzeuge G.M.B.H. Grinding tool and the like made of a ceramic material coated with extremely hard abrasive granules
JP2004181597A (en) * 2002-12-05 2004-07-02 Toyoda Mach Works Ltd Metal-bonded grinding wheel and its method of manufacture
CN102906018A (en) * 2010-04-14 2013-01-30 贝克休斯公司 Method of making a diamond particle suspension and method of making a polycrystalline diamond article therefrom
CN103586792A (en) * 2013-11-26 2014-02-19 常熟市巨力砂轮有限责任公司 Method for preparing ceramic CBN grinding wheel
CN104385154A (en) * 2014-09-12 2015-03-04 陕西德赛新材料科技有限公司 Preparation method of low-temperature ceramic bond for grinding tool

Also Published As

Publication number Publication date
CN104802104A (en) 2015-07-29

Similar Documents

Publication Publication Date Title
US8603578B2 (en) Composition and method for making a proppant
CN103395011B (en) Polyvinyl alcohol-elastic polyurethane buffing wheel and preparation method thereof
CA2659669C (en) A composition and method for making a proppant
RU2056993C1 (en) Method of manufacturing granules of diamond particles and granule of diamond particle
US5221294A (en) Process of producing self-bonded ceramic abrasive wheels
US5160509A (en) Self-bonded ceramic abrasive wheels
CA2447928C (en) Proppants and their manufacture
CN100584535C (en) Improved coated abrasives
US8012533B2 (en) Composition and method for making a proppant
CN103789596B (en) A kind of polycrystalline CBN cutting tool material and preparation method thereof
CN101787270B (en) Low-density ceramic proppant and preparation method thereof
CN105349868B (en) A kind of cermet bonding agent and preparation method thereof, CBN emery wheels and preparation method thereof
JP2779252B2 (en) Silicon nitride sintered abrasive and its manufacturing method
AU766446B2 (en) Method for making microabrasive tools
CN101934501B (en) Self-propagating sintering metal-bonded diamond grinding wheel and preparation method thereof
CN101602111B (en) Super-strong and super-toughened ceramic cutter and manufacturing method thereof
CN100368504C (en) Super strength ceramic aggregate proppant and method for preparing same
US20060016598A1 (en) Lightweight proppant and method of making same
CN102268619B (en) Preparation method of carbon-nanotube-reinforced polycrystalline diamond compact (PDC) material
CN101913122B (en) Method for preparing ceramic bond super-hard abrasive tool
CN103922747B (en) Ceramic bond super-hard material grinding tool is injected into moulding mixture and injection moulding method
CN102009393B (en) Preparation technology of high-speed grinding CBN (Cubic Boron Nitride) ceramic grinding wheel
CN103273433B (en) Diamond cutting abrasive disc
CN102674861B (en) Refractory castable containing viscoplasticity phase and preparation method thereof
CN101691028B (en) Manufacturing method for resin grinding wheel cutting piece with function of cutting soft and hard materials

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant