JPH02284870A - Abrasive grain fall-off suppressing grindstone and manufacture thereof - Google Patents
Abrasive grain fall-off suppressing grindstone and manufacture thereofInfo
- Publication number
- JPH02284870A JPH02284870A JP32068788A JP32068788A JPH02284870A JP H02284870 A JPH02284870 A JP H02284870A JP 32068788 A JP32068788 A JP 32068788A JP 32068788 A JP32068788 A JP 32068788A JP H02284870 A JPH02284870 A JP H02284870A
- Authority
- JP
- Japan
- Prior art keywords
- abrasive grains
- powder
- hard substance
- mixed
- whiskers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006061 abrasive grain Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 39
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract 5
- 239000000843 powder Substances 0.000 claims description 57
- 239000006185 dispersion Substances 0.000 claims description 35
- 229910003460 diamond Inorganic materials 0.000 claims description 31
- 239000010432 diamond Substances 0.000 claims description 31
- 229910052582 BN Inorganic materials 0.000 claims description 22
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 22
- 238000000227 grinding Methods 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 17
- 239000011230 binding agent Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002798 polar solvent Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 208000013201 Stress fracture Diseases 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000007970 homogeneous dispersion Substances 0.000 claims 4
- 210000002808 connective tissue Anatomy 0.000 claims 1
- 239000002270 dispersing agent Substances 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical class [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 9
- 239000007767 bonding agent Substances 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 229910001096 P alloy Inorganic materials 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 241000283726 Bison Species 0.000 description 1
- 229910007472 ZnO—B2O3—SiO2 Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〔作業上の利用分野〕
本発明の製造法により製造した砥石であるダイヤモンド
砥石および立方晶窒化硼素砥石は、通常のダイヤモンド
砥石および立方晶窒化硼素砥石と同じ研磨作業および研
削作業の分野において使用される砥石である。[Detailed Description of the Invention] [Working Field of Use] Diamond grindstones and cubic boron nitride grindstones manufactured by the manufacturing method of the present invention can be used in the same polishing operations as ordinary diamond grindstones and cubic boron nitride grindstones. This is a whetstone used in the field of grinding work.
従来使用されているダイヤモンド砥石（以下ダイヤモン
ド砥粒な用いて成れる砥石についてのみ述べる）は、ダ
イヤモンド砥粒を結合するボンド剤として合成樹脂ボン
ド剤・メタリックボンド剤・ビトリファイドボンド剤等
が使用されている。其の場合に使用される砥粒の状態は
、ダイヤモンドの結晶面を現わしたダイヤモンド砥粒ま
たはダイヤモンド砥粒の表面に形成したニッケルーリン
合金の面を現わしたニッケルーリン合金メツキ砥粒の状
態である。斯様な状態にある砥粒なボンド剤を用いて成
形し焼成して製造した砥石は砥粒とボンド剤組織との結
合力が弱く、砥粒が４０％はども微小破砕すれば其の砥
粒はボンド剤組織より分離脱落するので砥石としての寿
命が短い実情にある。Conventionally used diamond whetstones (hereinafter we will only talk about whetstones made using diamond abrasive grains) use synthetic resin bonding agents, metallic bonding agents, vitrified bonding agents, etc. as bonding agents for bonding diamond abrasive grains. There is. The state of the abrasive grains used in that case is the state of diamond abrasive grains showing the diamond crystal plane or the state of nickel-phosphorus alloy plating abrasive grains showing the surface of the nickel-phosphorus alloy formed on the surface of the diamond abrasive grain. It is. A whetstone manufactured by molding and firing an abrasive bond agent in such a state has a weak bond between the abrasive grains and the bond agent structure, and if 40% of the abrasive grains are micro-fractured, the abrasive stone will break down. The grains separate from the bonding agent structure and fall off, so the lifespan of the grinding wheel is short.
前項にて説明したように、従来のダイヤモンド砥石を使
用して研磨作業または研削作業を行う場合には砥粒の破
砕が４０チはども進行すれば其の砥粒はボンド剤＋ｌｉ
織より分離脱落する実情であり、斯様な情況のもとでは
砥粒の有効利用率が低いために研磨作業または研削作業
の費用が高くつくのが問題点であって、本発明は上記の
問題点を解決するため砥粒の脱落を抑制して砥粒の有効
利用率を高めることができる手段の開発を目的とするも
のである。As explained in the previous section, when performing polishing or grinding work using a conventional diamond grinding wheel, if the abrasive grains have been crushed for 40 inches, the abrasive grains will be bonded with bonding agent + li.
In such a situation, the effective utilization rate of abrasive grains is low and the cost of polishing or grinding work becomes high.The present invention solves the above problems. In order to solve this problem, the objective is to develop a means that can suppress the falling off of abrasive grains and increase the effective utilization rate of abrasive grains.
本発明においては、問題点を解決するために、分散材と
する硬質物ウィスカーと補助分散材とする硬質物粉末と
を極性の高い水またはメチルアルコール等の溶媒の中に
混合し攪拌して分散液を生成し、次いで其の分散液より
溶媒を気化させて除いた分散混合物に、各種合成樹脂粉
末・各種金属材粉末・各種セラミックス材粉末のうちよ
り結合機能により選択した結合材粉末を混合し、続いて
ダイヤモンド粉末または立方晶窒化硼素粉末な砥粒とし
て均等に混合攪拌して生成した均等分散混合物を砥石形
成用原料とし、其の砥石形成用原料を加圧成形すると同
時に加熱焼成して砥粒の脱落を抑制した砥石を生成して
砥粒の有効利用率の高い砥石を製造することを手段とす
るものである。In the present invention, in order to solve the problem, hard material whiskers as a dispersing material and hard material powder as an auxiliary dispersing material are mixed in a highly polar solvent such as water or methyl alcohol, and dispersed by stirring. A liquid is generated, and then the solvent is removed by vaporization from the dispersion liquid, and a binder powder selected from among various synthetic resin powders, various metal material powders, and various ceramic material powders depending on the binding function is mixed into the dispersion mixture. Then, a uniformly dispersed mixture produced by evenly mixing and stirring diamond powder or cubic boron nitride powder as abrasive grains is used as a raw material for forming a grindstone, and the raw material for forming a grindstone is press-molded and simultaneously heated and fired to form a grinder. The method is to produce a whetstone that suppresses the shedding of grains and to produce a whetstone that has a high effective utilization rate of abrasive grains.
極性の高い溶媒である水またはメチルアルコール等の中
に、高い抗張力を有する炭化珪素ウィスカーまたは窒化
珪素ウィスカー等の各種硬質物ウィスカーのうちより分
散材として選択した硬質物ウィウカーと各種硬質物粉末
のうちより補助分散材として選択した硬質物粉末とを混
合し攪拌して分散液を生成し、次いで其の分散液より溶
媒を気化させて除いた分散混合物に、各種合成樹脂材粉
末・各種金属材粉末・各種セラミックス材粉末のうちよ
り結合機能により選択した結合材粉末を混合し、続いて
、ダイヤモンド粉末または立方晶窒化硼素粉末を砥粒と
して混合し、次いで、生成した混合物を攪拌して生成し
た均等分散混合物を砥石形成用原料とする。次いで調製
した均等分散混合物である砥石形成用原料を加圧成形す
ると同時に其の原料の中に混合している結合材粉末を砥
石形成用原料である均等分散混合物の中で結合機能を実
現するに過当した温度にて加熱焼成して、其の均等分散
混合物の中で均等に分散し混合している結合材粉末であ
る合成樹脂材粉末または金属材粉末またはセラミックス
材粉末が分散材である硬質物ウィスカーおよび補助分散
材である硬質物粉末と焼結して、結合材粉末と硬質物ウ
ィスカーと硬質物粉末とより成る焼結組織がダイヤモン
ド砥粒または立方晶窒化硼素砥粒と焼結して、其のダイ
ヤモンド砥粒または立方晶窒化硼素砥粒な強靭に把持し
た複合焼結組織体を生成する作用を行うものである〇〔
実施例〕
実施例 １゜
分散材とする硬質物ウィスカーとして炭化珪素ウィスカ
ーを４０重量％と補助分散材とする硬質物として炭化珪
素粉末を６０重量％との割合にて混合した混合物を、極
性の高い水の中に投入し充分に攪拌して分散液を生成し
た。次いで其の分散液を加熱して水を蒸発させて除いた
分散混合物を生成した。次いでダイヤモンド粉末である
ダイヤモンド砥粒の砥粒率（容積）が２５の割合を構成
するように分散混合物に砥粒とするダイヤモンド粉末と
結合材とするニッケル粉末とを混合し充分に攪拌して均
等分散混合物を生成した。其の生成した均等分散混合物
を砥石形成用原料とした。次いで生成した砥石形成用原
料をホットプレス装置を用いて２，０ＯＯＫ９／−の圧
力にて加圧成形すると同時に１，０００℃の温度にて加
熱焼成して複合焼結組織体であるダイヤモンド砥石を生
成した。得たダイヤモンド砥石は、分散材である炭化珪
素ウィスカーと補助分散材とする炭化珪素粉末と結合材
とするニッケル粉末とが焼結して生成している焼結組織
がダイヤモンド砥粒と焼結し結合して其の焼結組織がダ
イヤモンド砥粒な強靭に把持した複合焼結組織体を構成
しているダイヤモンド砥粒の脱落を抑制した砥石であっ
た。In highly polar solvents such as water or methyl alcohol, hard whiskers selected from among various hard whiskers such as silicon carbide whiskers or silicon nitride whiskers having high tensile strength and various hard powders are added as a dispersing material. A dispersion liquid is produced by mixing and stirring a hard substance powder selected as an auxiliary dispersion material, and then the solvent is removed from the dispersion liquid by vaporization, and various synthetic resin material powders and various metal material powders are added to the dispersion mixture.・Binding material powder selected from among various ceramic material powders based on its bonding function is mixed, then diamond powder or cubic boron nitride powder is mixed as abrasive grains, and the resulting mixture is then stirred to produce a homogeneous powder. The dispersed mixture is used as a raw material for forming a grindstone. Next, the prepared raw material for forming a grinding wheel, which is a uniformly dispersed mixture, is pressure-molded, and at the same time, the binder powder mixed in the raw material is used to realize a bonding function in the uniformly dispersing mixture, which is a raw material for forming a grinding wheel. A hard material whose dispersion material is a synthetic resin material powder, a metal material powder, or a ceramic material powder, which is a binder powder that is heated and fired at an excessive temperature and is evenly dispersed and mixed in the uniformly dispersed mixture. The whiskers and the hard substance powder which is the auxiliary dispersion material are sintered, and the sintered structure consisting of the binder powder, the hard substance whiskers, and the hard substance powder is sintered with the diamond abrasive grains or the cubic boron nitride abrasive grains. Its diamond abrasive grains or cubic boron nitride abrasive grains act to generate a strongly gripped composite sintered structure〇〇
Example] Example 1 A mixture of 40% by weight of silicon carbide whiskers as a hard substance whisker as a dispersant and 60% by weight of silicon carbide powder as a hard substance as an auxiliary dispersant was mixed with a polar A dispersion was produced by pouring into high water and stirring thoroughly. The dispersion was then heated to evaporate the water to form a dispersion mixture. Next, the diamond powder used as the abrasive grains and the nickel powder used as the binder were mixed into the dispersion mixture so that the abrasive grain ratio (volume) of the diamond abrasive grains (diamond powder) was 25%, and the mixture was thoroughly stirred and mixed evenly. A dispersed mixture was produced. The resulting uniformly dispersed mixture was used as a raw material for forming a grindstone. Next, the produced raw material for forming a grindstone is press-formed using a hot press machine at a pressure of 2,000K9/-, and simultaneously heated and fired at a temperature of 1,000°C to form a diamond grindstone, which is a composite sintered structure. generated. The obtained diamond grinding wheel has a sintered structure formed by sintering silicon carbide whiskers as a dispersion material, silicon carbide powder as an auxiliary dispersion material, and nickel powder as a binder, which is sintered with diamond abrasive grains. This grindstone suppressed the falling off of diamond abrasive grains, which constitute a composite sintered structure in which the sintered structure is strongly held by diamond abrasive grains.
実施例 ２゜
分散材とする硬質物ウィスカーとして窒化珪素ウィスカ
ーを４０重量％と補助分散材とする硬質物粉末として窒
化珪素粉末を６０重量％との割合にて混合した混合物を
、極性の高い水の中に投入し充分に攪拌して分散液を生
成した。次いで其の分散液を加熱して水を蒸発させて除
いた分散混合物を生成した。次いで立方晶窒化硼素粉末
である立方晶窒化硼素砥粒の砥粒率（容積）が２５の割
合を構成するように分散混合物に砥粒とする立方晶窒化
硼素粉末と結合材とするニッケル粉末とを混合し充分に
攪拌して均等分散混合物を生成した。其の生成した均等
分散混合物を砥石形成用原料とした。次いで生成した砥
石形成用原料をホットプレス装置を用いて２，０００に
９／ｄの圧力にて加圧成形すると同時ＶＣ１，００’０
℃の温度にて加熱焼成して複合焼結組織体である立方晶
窒化硼素砥石を生成した。得た立方晶窒化硼素砥石は分
散材である窒化珪素ウィスカーと補助分散材とする窒化
珪素粉末と結合材とするニッケル粉末とが焼結して生成
している焼結組織が立方晶窒化硼素砥粒と焼結し結合し
て、其の焼結組織が立方晶窒化硼素砥粒な強靭に把持し
た複合焼結組織体を構成している立方晶窒化硼素砥粒の
脱落を抑制した砥石であった。Example 2゜A mixture of 40% by weight of silicon nitride whiskers as hard material whiskers to be used as a dispersant and 60% by weight of silicon nitride powder as hard material powder to be used as an auxiliary dispersant was mixed with highly polar water. and stirred thoroughly to form a dispersion. The dispersion was then heated to evaporate the water to form a dispersion mixture. Next, the cubic boron nitride powder to be used as the abrasive grains and the nickel powder to be used as the binder are mixed into a dispersed mixture so that the abrasive grain ratio (volume) of the cubic boron nitride abrasive grains is 25%. were mixed and sufficiently stirred to form a uniformly dispersed mixture. The resulting uniformly dispersed mixture was used as a raw material for forming a grindstone. Next, the produced raw material for forming a grindstone was press-molded using a hot press machine at a pressure of 2,000 to 9/d, and at the same time the VC was 1,00'0.
A cubic boron nitride grindstone, which is a composite sintered structure, was produced by heating and firing at a temperature of °C. The obtained cubic boron nitride grindstone has a sintered structure formed by sintering silicon nitride whiskers as a dispersion material, silicon nitride powder as an auxiliary dispersion material, and nickel powder as a binder. This grindstone suppresses the falling off of the cubic boron nitride abrasive grains that are sintered and bonded to the grains to form a strongly gripped composite sintered structure in which the sintered structure is cubic boron nitride abrasive grains. Ta.
実施例 ３゜
分散材とする硬質物ウィスカーとして炭化珪素ウィスカ
ーを４０重量％と補助分散材とする硬質物として炭化珪
素粉末を６０重＠チとの割合にて混合した混合物を、極
性の高い水の中に投入し充分に攪拌して分散液を生成し
た。次いで其の分散液を加熱して水を蒸発させて除いた
分散混合物を生成した。次いでダイヤモンド粉末である
ダイヤモンド砥粒の砥粒率（容積）が２５の割合を構成
するよう・、二に分散混合物に砥粒とするダイヤモンド
粉末と結合材とする封着ガラス粉末（Ｎａ２Ｑ−ＺｎＯ
−Ｂ２Ｏ３−ＳｉＯ２系）とを混合し充分に攪拌して均
等分散混合物を生成した。其の生成した均等分散混合物
を砥石形成用原料とした。次いで生成した砥石形成用原
料をホットプレス装置を用いて１，０ＯＯＫｒ／−の圧
力にて加圧成形すると同時に６２０℃の温度にて加熱焼
成して複合焼結組織体であるダイヤモンド砥石を生成し
た。得たダイヤモンド砥石は、分散材である炭化珪素ウ
ィスカーと補助分散材とする炭化珪素粉末と結合材とす
る封着ガラヌ粉末とが焼結して生成している焼結組織が
ダイヤモンド砥粒と焼結し結合して其の焼結組織がダイ
ヤモンド砥粒を強靭に把持した複合焼結組織体を構成し
ているダイヤモンド砥粒の脱落を抑制した砥石であった
。Example 3 A mixture of 40% by weight of silicon carbide whiskers as a hard material used as a dispersing material and 60% by weight of silicon carbide powder as a hard material used as an auxiliary dispersing material was mixed with highly polar water. and stirred thoroughly to form a dispersion. The dispersion was then heated to evaporate the water to form a dispersion mixture. Next, the diamond powder as the abrasive grains and the sealing glass powder (Na2Q-ZnO
-B2O3-SiO2 system) and sufficiently stirred to form a uniformly dispersed mixture. The resulting uniformly dispersed mixture was used as a raw material for forming a grindstone. Next, the produced raw material for forming a grindstone was press-formed using a hot press device at a pressure of 1,000 Kr/-, and simultaneously heated and fired at a temperature of 620°C to produce a diamond grindstone, which is a composite sintered structure. . The obtained diamond grinding wheel has a sintered structure formed by sintering silicon carbide whiskers as a dispersing material, silicon carbide powder as an auxiliary dispersing material, and sealed galanic powder as a binding material, which is a sintered structure that is formed by sintering the diamond abrasive grains. This grindstone suppressed the falling off of the diamond abrasive grains, which constitute a composite sintered structure in which the diamond abrasive grains are tightly held together by sintering.
実施例 ４゜
分散材とする硬質物ウィスカーとして窒化珪素ウィスカ
ーを４０重量％と補助分散材とする硬質物粉末として窒
化珪素粉末を６０重量％との割合にて混合した混合物を
、極性の高い水の中に投入し充分に攪拌して分散液を生
成した。次いで其の分散液を加熱して水を蒸発させて除
いた分散混合物を生成した。次いで立方晶窒化硼素粉末
である立方晶窒化硼素砥粒の砥粒率（容積）が２５の割
合を構成するように分散混合物に砥粒とする立方晶窒化
硼素粉末と結合材とするポリイミド粉末とを混合し充分
に攪拌して均等分散混合物を生成した。其の生成した均
等分散混合物を砥石形成用原料とした。次いで生成した
砥石形成用原料をホットプレス装置を用いて４００ Ｋ
９／ｄの圧力にて加圧成形すると同時１ｃ３５０℃の温
度にて加熱焼成して複合焼結組織体である立方晶窒化硼
素砥石を生成した。得た立方晶窒化硼素砥石は分散材で
ある窒化珪素ウィスカーと補助分散材とする窒化珪素粉
末と結合材とするポリイミド粉末とが焼結し生成してい
る焼結組織が立方晶窒化硼素砥粒と焼結し結合して、其
の焼結組織が立方晶窒化硼素砥粒な強靭に把持した複合
焼結組織体を構成している立方晶窒化硼素砥粒の脱落を
抑制した砥石であった。Example 4 A mixture of 40% by weight of silicon nitride whiskers as hard material whiskers to be used as a dispersant and 60% by weight of silicon nitride powder as hard material powder to be used as an auxiliary dispersant was mixed with highly polar water. and stirred thoroughly to form a dispersion. The dispersion was then heated to evaporate the water to form a dispersion mixture. Next, the cubic boron nitride powder as the abrasive grains and the polyimide powder as the binder are mixed into a dispersed mixture so that the abrasive grain ratio (volume) of the cubic boron nitride abrasive grains is 25%. were mixed and sufficiently stirred to form a uniformly dispersed mixture. The resulting uniformly dispersed mixture was used as a raw material for forming a grindstone. Next, the produced raw material for forming a grindstone was heated at 400 K using a hot press device.
The product was press-molded at a pressure of 9/d and simultaneously heated and fired at a temperature of 350° C. to produce a cubic boron nitride grindstone, which is a composite sintered structure. The obtained cubic boron nitride abrasive wheel has a sintered structure formed by sintering silicon nitride whiskers as a dispersion material, silicon nitride powder as an auxiliary dispersion material, and polyimide powder as a binder. This grindstone suppressed the falling off of the cubic boron nitride abrasive grains, which are sintered and bonded to form a composite sintered structure in which the sintered structure is cubic boron nitride abrasive grains. .
本発明の製造方法によって製造した砥石は、各種の硬質
物ウィスカーのうちより分散材として選択した硬質物ウ
ィスカーと各種硬質物粉末のうちより補助分散材として
選択した硬質物粉末とを極性の高い溶媒の中に混合し攪
拌して分散液を生成し、次いで其の分散液より溶媒を気
化させて除いた分散混合物を生成し、次いで其の分散混
合物に各種合成樹脂材粉末・各種金属材粉末・各種セラ
ミックス材粉末のうちより結合機能により選択した結合
材粉末を混合し、続いてダイヤモンド粉末または立方晶
窒化硼素粉末な砥粒として混合した混合物を砥石形成用
原料とし、其の砥石形成用原料を加圧成形すると同時に
加熱焼成して生成した複合焼結組織体より成る砥石であ
って、其の砥石を構成している複合焼結組織体の中に分
散焼結している高い抗張力を有する硬質物ウィスカーが
其の複合焼結組織体の破ぶれを防いで、研磨作業或は研
削作業時に砥粒が複合焼結体の部分として其の複合焼結
体と一緒に微小破砕を行って、其の微小破砕が６０％乃
至７０％に達するまでは砥粒が複合焼結組織体である砥
石より脱落することを抑制して成る砥石であるから砥粒
の有効利用率を高めて砥石の寿命を延長する効果を奏す
ることができる。The grinding wheel manufactured by the manufacturing method of the present invention is characterized in that the hard substance whisker selected as a dispersing material among various types of hard substance whiskers and the hard substance powder selected as an auxiliary dispersing material among various types of hard substance powders are mixed in a highly polar solvent. A dispersion liquid is produced by mixing and stirring in the liquid, then a dispersion mixture is produced by vaporizing the solvent from the dispersion liquid, and then various synthetic resin powders, various metal powders, etc. are added to the dispersion mixture. A binder powder selected from among various ceramic material powders based on its binding function is mixed, and then the mixture is mixed as abrasive grains such as diamond powder or cubic boron nitride powder, and the mixture is used as a raw material for forming a grinding wheel. A grinding wheel made of a composite sintered structure produced by pressure forming and heating and firing at the same time, and a hard material with high tensile strength that is dispersed and sintered in the composite sintered structure that makes up the grinding wheel. The material whiskers prevent the composite sintered body from breaking, and during polishing or grinding operations, the abrasive grains become part of the composite sintered body and undergo micro-fracture together with the composite sintered body. This grinding wheel prevents the abrasive grains from falling off from the grinding wheel, which is a composite sintered structure, until the micro-fractures reach 60% to 70%, increasing the effective utilization rate of the abrasive grains and extending the life of the grinding wheel. It can have a prolonging effect.
手 続 補 正 書 （方式） 事件の表示 昭和６３年特許願第３２０６８７号 発明の名称 砥粒の脱落を抑制した砥石およ びその製造法 補正をする者 事件との関係hand Continued Supplementary Positive book (method) Display of incidents 1986 Patent Application No. 320687 name of invention A whetstone that prevents abrasive grains from falling off. Bison manufacturing method person who makes corrections Relationship with the incident
Claims (2)
択した硬質物ウィスカーと各種硬質物粉末のうちより補
助分散材として選択した硬質物粉末とを、極性の高い水
またはメチルアルコール等の溶媒の中に混合し攪拌して
均等分散液を生成し、次いで其の均等分散液より溶媒を
気化させて除いた均等分散混合物に、各種合成樹脂材粉
末、各種金属材粉末、各種セラミックス材粉末のうちよ
り結合機能により選択した結合材粉末を混合し、続いて
ダイヤモンド粉末または立方晶窒化硼素粉末を砥粒とし
て混合し、攪拌して生成した均等分散混合物を砥石形成
用原料とし、其の砥石用原料を加圧成形すると同時に加
熱焼成して高い抗張力を有する硬質物ウィスカーが均等
に分散複合して、破ぶれることを強く抑制して成る複合
焼結組織体である焼結砥石を生成し、その砥石の複合焼
結組織体中に分散複合しているダイヤモンド砥粒または
立方晶窒化硼素砥粒が、研磨作業或いは研削作業時に複
合焼結組織体と一緒に微小破砕を行つて、その砥粒が複
合焼結組織体より容易に脱落しない様に抑制する機能を
具えた砥石であることを特徴とする砥粒の脱落を抑制し
た砥石。(1) A hard substance whisker selected as a dispersion material from various types of hard substance whiskers and a hard substance powder selected as an auxiliary dispersion material from among various types of hard substance powders are placed in a highly polar solvent such as water or methyl alcohol. A homogeneous dispersion liquid is produced by mixing and stirring, and then the solvent is removed from the homogeneous dispersion liquid by vaporization. The binder powder selected by the bonding function is mixed, and then diamond powder or cubic boron nitride powder is mixed as abrasive grains, and the uniformly dispersed mixture produced by stirring is used as a raw material for forming a grinding wheel. A sintered whetstone, which is a composite sintered structure that strongly suppresses breakage, is produced by pressure-molding and heating and firing at the same time to evenly disperse and compound hard substance whiskers with high tensile strength. Diamond abrasive grains or cubic boron nitride abrasive grains dispersed and composited in the composite sintered body undergo micro-fracture together with the composite sintered body during polishing or grinding work, and the abrasive grains become the composite sintered body. 1. A whetstone that suppresses abrasive grains from falling off, characterized in that the whetstone has a function of suppressing abrasive grains from falling off easily from connective tissue.
択した硬質物ウィスカーと各種硬質物粉末のうちより補
助分散材として選択した硬質物粉末とを、極性の高い水
またはメチルアルコール等の溶媒の中に混合し攪拌して
均等分散液を生成し、次いで其の均等分散液より溶媒を
気化させて除いた均等分散混合物に、各種合成樹脂材粉
末・各種金属材粉末・各種セラミックス材粉末のうちよ
り結合機能により選択した結合材粉末を混合し続いてダ
イヤモンド粉末または立方晶窒化硼素粉末を砥粒として
混合し、攪拌して生成した均等分散混合物を砥石形成用
原料とし、次いで其の砥石形成用原料を加圧成形すると
同時に加熱焼成して、高い抗張力を有する硬質物ウィス
カーを複合した複合焼結組織が、個々のダイヤモンド砥
粒または個々の立方晶窒化硼素砥粒を複合焼結組織体の
部分として焼結し把持した複合焼結組織体を生成するこ
とを特徴とする砥粒の脱落を抑制した砥石の製造法。(2) A hard substance whisker selected from various types of hard substance whiskers as a dispersion material and a hard substance powder selected from among various types of hard substance powders as an auxiliary dispersion material are placed in a highly polar solvent such as water or methyl alcohol. A homogeneous dispersion liquid is produced by mixing and stirring, and then the solvent is removed from the homogeneous dispersion liquid by vaporization. The binder powder selected by the bonding function is mixed, and then diamond powder or cubic boron nitride powder is mixed as abrasive grains, and the uniformly dispersed mixture produced by stirring is used as a raw material for forming a grinding wheel. The composite sintered structure is formed by pressure molding and heating and sintering at the same time to form a composite sintered structure with hard material whiskers having high tensile strength. A method for manufacturing a grinding wheel that suppresses shedding of abrasive grains, which is characterized by producing a sintered and gripped composite sintered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32068788A JPH02284870A (en) | 1988-12-21 | 1988-12-21 | Abrasive grain fall-off suppressing grindstone and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32068788A JPH02284870A (en) | 1988-12-21 | 1988-12-21 | Abrasive grain fall-off suppressing grindstone and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02284870A true JPH02284870A (en) | 1990-11-22 |
Family
ID=18124218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32068788A Pending JPH02284870A (en) | 1988-12-21 | 1988-12-21 | Abrasive grain fall-off suppressing grindstone and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02284870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0788771A (en) * | 1993-09-21 | 1995-04-04 | Tatsuro Kuratomi | Cbn abrasive grain binding grinding wheel and manufacture thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943636A (en) * | 1972-08-31 | 1974-04-24 | ||
| JPS5372287A (en) * | 1976-12-09 | 1978-06-27 | Gen Electric | Method of manufacturing forming abraisive material for use in rotary sealant |
-
1988
- 1988-12-21 JP JP32068788A patent/JPH02284870A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943636A (en) * | 1972-08-31 | 1974-04-24 | ||
| JPS5372287A (en) * | 1976-12-09 | 1978-06-27 | Gen Electric | Method of manufacturing forming abraisive material for use in rotary sealant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0788771A (en) * | 1993-09-21 | 1995-04-04 | Tatsuro Kuratomi | Cbn abrasive grain binding grinding wheel and manufacture thereof |
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