JPH01103267A - Grinding ceramic tool - Google Patents
Grinding ceramic toolInfo
- Publication number
- JPH01103267A JPH01103267A JP26048187A JP26048187A JPH01103267A JP H01103267 A JPH01103267 A JP H01103267A JP 26048187 A JP26048187 A JP 26048187A JP 26048187 A JP26048187 A JP 26048187A JP H01103267 A JPH01103267 A JP H01103267A
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- ceramic composite
- volume
- silicon carbide
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 36
- 238000000227 grinding Methods 0.000 title claims abstract description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical class [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 6
- 229910033181 TiB2 Inorganic materials 0.000 description 6
- 229910007948 ZrB2 Inorganic materials 0.000 description 6
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910010271 silicon carbide Inorganic materials 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 229910001315 Tool steel Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000373 effect on fracture Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
［産業上の利用分野］
本発明は、例えばスキー等のエツジの研削に使用される
研削用セラミック工具に係る。
［従来技術Ｊ
従来、スキーエツジ等の研削用工具は、工具鋼から製造
されており、従来の研削用工具は湿気に１＋）飴びを生
じ易いことと、耐磨耗性が不十分で寿命が短いという欠
点を有していた。[Industrial Field of Application] The present invention relates to a ceramic grinding tool used, for example, to grind the edges of skis and the like. [Prior Art J] Conventionally, grinding tools such as ski edges have been manufactured from tool steel, and conventional grinding tools tend to form 1+) candy when exposed to moisture, and have insufficient wear resistance, resulting in a short service life. It had the disadvantage of being short.
本発明の目的は、このような欠点のない研削用工具を提
供することにある。
［問題点を解決するための手段］
本発明によれば、前記目的は、直径０．５〜２．５ｐ１
長さ１０〜８０ＪＩＲの炭化ケイ素ウィスカーの５〜５
０容■％とアルミナマトリックスの５０〜９５容量％と
を均一に分散させたセラミック複合体からなる研削用セ
ラミック工具及び
■＋ ［３２及びＺｒＢ２からなる群から選ばれた、粒
径０゜５〜１０μｓの硼化物の一神を１０〜５０容聞％
の割合□で含有するアルミナマトリックス５０〜９５容
壱％と直径０．５〜２．５虜、長さ１０〜８０μの炭化
ケイ素ウィスカーの５〜５０容口％とを均一に分散させ
たセラミック複合体からなる研削用セラミック工具によ
り達成される。
、次に、本発明の研削用セラミック、工具の製造につい
て説明する。
所定ｍのアルミナマトリックスにＭｇＯ等の焼結助剤を
加え、水又はアセトン等の揮発性媒体を添加し、湿式で
粉砕混合する。この粉砕混合物中に、ボットミル等で予
め直径０，５〜２，５ｐ、長さ１０〜８０ｕＩＡの粒度
まで解砕した炭化ケイ素ウィスカーの所定部を加え湿式
混合する。この際集塊の形成及び炭化ケイ素の凝集体の
生成を最小にして、アルミナマトリックス中に炭化ケイ
索を均一に分散さＵる。このようにして得られたスラリ
ーから湿式混合に用いた水又は揮発性媒体を除去又は蒸
発さゼて乾燥した後に造粒を行う。造粒したアルミナ−
炭化ケイ素ウィスカー混合物をホットプレス等により焼
結して所定の大きざのセラミック複合体を形成する。こ
のようにして得られたセラミック複合体をダイヤモンド
工員等により研削用の刃先加工を行なう。
上；ホのようにして製造された研削用工具の場合、炭化
ケイ素ウィスカーのアルミナマトリックス中の含有Ｓが
５％未満では、セラミック複合体の破壊靭性が十分に向
上せず、刃先が割れ易い。また炭化ケイ本ウィスカーの
容重％が５０％を越えると、セラミック複合体の密度が
低く、比較的穴が多いために刃先がかけ易い。
セラミック複合体に含まれる炭化ケイ素ウィスカーの含
有量が５−５０容ａ％の場合に、セラミック複合体の破
壊靭性と相対的耐磨耗性について最良の結果が得られる
。
Ｔ ＋ ８２又は７ｒ Ｂ２を含むアルミナマトリック
ス５０〜９５容屋％と炭化ケイ素ウィスカー５〜５０容
量％とを含有するセラミック複合体のｖｉＩ造は、予め
所定部の０．５〜１０ｍの粒径を有するＴｉＢ２又はＺ
ｒ ８２をアルミナに添加しておくことを除いては上述
の製造方法と同様にして行われる。
ＴｉＢ２又はＺ、８２を含むアルミナマトリックス５０
〜９５容量％と炭化ケイ素ウィスカー５〜５Ｇ容昂％と
からなるセラミック複合体の場合、ＴｉＢ 又は７１８
２のアルミナマトリックス中の含有率が１０容聞％未満
では、得られるセラミック複合体の破壊靭性はＴｉＢ２
又はＺｒＢ２を無添加のアルミナマトリックス５０〜９
５容量％と炭化ケイ素ウィスカー５〜５０容量％とから
得られるセラミック複合体の破壊靭性と差がなく、Ｔｉ
８２又はＺ、８２添加による破壊゛靭性に対り゛る効
果は現われない。またＴ１８２又はＺｒＢ２をアルミナ
に対してｓｏｗｎ％以上添加した場合もＴｉ Ｂ２又は
ＺｒＢ２を１０容参％以）添加した場合と同様に破壊靭
性に対するＴｉＢ２又はＺ、 Ｂ２ （７；）添加効果
は得られない。アルミナ５０〜９０容臘％に対してＴｉ
Ｂｒ２又はＺｒＢ２を１０〜５０容出％添加した場合
に、得られるセラミック複合体の破壊靭性が、Ｔｉ Ｂ
２又はＺ、８２を無添加の場合に得られるセラミック複
合体の破壊靭性よりも約３０％向上する。
［実施例］
次に本発明の研削用セラミック工具を実施例により更に
詳細に説明する。
ｌ工人１１
９５．３ｊＪのアルミナマトリックス（８０容ω％）に
対し”ｒ Ｏ，５重量１％のＭｇＯを加え、アｔ？Ｉ−
ン６２５ｄ中に添加し、この混合物を湿式で粉砕混合し
た。
この粉砕混合物中に、ボットミルで予め解砕した炭化ケ
イ素ウィスカー１９．３ｇ（２０容φ％）を加えて湿式
混合して炭化ケイ素ウィスカーが均一に分散したスラリ
ー６１５．１３を得た。このスラリーからアセトンを蒸
発さゼて乾燥した後に、造粒を行い、造粒して１１られ
たアルミナ−炭化ケイ素ウィスカー３０５Ｊを４９ｔｙ
ｌ ｐ ａの圧力下１８００℃で０．５時間ホットプレ
スにかけてセラミック複合体を得た。
このようにして得られたセラミック複合体をダイヤモン
ド工具を用いて刃先加工を行なってスキーエツジ研削用
工具を製造した。このスキーエツジ研削用工具と市販の
工具鋼製スキーエツジシャーブナ−とに関して、硬度１
曲げ強度、破壊靭性。
及び耐磨耗性試験を行い下表の如き結果を得た。
瓜１」乙１１
アルミナ８０容昂％と粒径０．５〜１０ミクロンのＺｒ
Ｂ２２０容間％とからなるアルミナマトリックスを用い
る以外は第１実施例と同様にしてスキーエツジ研削用工
具を製作した。市販の工具鋼製スキーエツジシャーブナ
−との性能比較試験も第１実施例と同様にして行った比
較試験結果を下表に示す。
且］ｊＪｌ■
アルミナ８０容量％と粒径０．５〜１０ミクロンのＴｉ
Ｂ２２０容量％とからなるアルミナマトリックスを用い
る以外は第１実施例と同様にしてスキーエツジ研削用工
具を製作した。市販の工具Ｉｌ製スキーエツジシャーブ
ナ−との性能比較試験も第１実施例と同様にして行った
。比較試験結果を下表に示す。
比較試験結果
ブナμｍの寿命を１とした時の各試料の寿命を表す数値
である。
上記比較試験結果から判るように、アルミナ単味から得
られたスキーエツジ研削工具の場合は、破壊靭性が低い
ために刃こぼれを生じた。アルミナ−炭化ケイ素ウィス
カー系のセラミック複合体−ブナ−を遥かに′Ｉａｇす
るものであることが判る。
また本発明の研削用工具はまた長ｌＩｒ１！ｌ高湿度に
訂いた場合でも発錆しなかった。
アルミナマトリックスにＴｉ ８２又はＺｒＢ２を２０
容唄％含有するセラミック複合体から得られた研削工具
は破壊靭性の向上に伴って相対的寿命が改善されること
が判る。
［発明の効果］
アルミナマトリックス５０〜９５容厖％と５〜５０容猷
％の炭化ケイ素ウィスカーとからなるセラミックス複合
体は、長期間高湿度の雰囲気下に四がれても発錆せず、
相対的寿命・ｂ著しく優れているため、スキーエツジ等
の研削用工具として有用である。
アルミナに対して１０〜５０容量％のＴｉ８２又はｚｒ
Ｂ２を含む５０〜９５容Ｍ％のアルミナマトリックス
と５〜５０容吊％の炭化ケイ東つィスノｊ−とかなるセ
ラミックス複合体もＦｉｉｌｉａ度下に長期間置かれて
も発錆せず、Ｔｉ ８２又はＺｒＢ２無添加のセラミッ
クス複合体に較べて相対的ｆ寿命が更に改善されている
ため、スキーエツジ等のωｌｌ出用工具して極めて有用
である。
代理人４ｆ理士 船 山 武The object of the invention is to provide a grinding tool that does not have these drawbacks. [Means for Solving the Problems] According to the present invention, the objective is to
5-5 silicon carbide whiskers with length 10-80 JIR
A grinding ceramic tool consisting of a ceramic composite in which 0 volume ■% and an alumina matrix of 50 to 95 volume % are uniformly dispersed; 10~50% of 10μs boride monogami
A ceramic composite in which 50 to 95 volume % of alumina matrix and 5 to 50 volume % of silicon carbide whiskers having a diameter of 0.5 to 2.5 μm and a length of 10 to 80 μ are uniformly dispersed in a proportion of □. This is achieved by a grinding ceramic tool consisting of a body. Next, the production of the grinding ceramic and tool of the present invention will be explained. A sintering aid such as MgO is added to a predetermined m of alumina matrix, a volatile medium such as water or acetone is added, and the mixture is wet-pulverized and mixed. A predetermined portion of silicon carbide whiskers, which have been crushed in advance using a bot mill or the like to a particle size of 0.5 to 2.5 μA in diameter and 10 to 80 uIA in length, is added to this pulverized mixture and wet-mixed. The silicon carbide cords are uniformly dispersed within the alumina matrix, minimizing agglomerate formation and silicon carbide aggregate formation. The slurry thus obtained is granulated after removing or evaporating the water or volatile medium used in wet mixing and drying. Granulated alumina
The silicon carbide whisker mixture is sintered by hot pressing or the like to form a ceramic composite of a predetermined size. The ceramic composite thus obtained is subjected to cutting edge processing for grinding by a diamond worker or the like. In the case of a grinding tool manufactured as in above (e), if the content of S in the alumina matrix of silicon carbide whiskers is less than 5%, the fracture toughness of the ceramic composite will not be sufficiently improved and the cutting edge will easily crack. Furthermore, when the volume percentage of the silicon carbide whiskers exceeds 50%, the density of the ceramic composite is low and there are relatively many holes, making it easy to cut with a cutting edge. The best results in terms of fracture toughness and relative wear resistance of the ceramic composite are obtained when the content of silicon carbide whiskers in the ceramic composite is 5-50% by volume. VII construction of a ceramic composite containing 50 to 95 volume % of alumina matrix with T + 82 or 7r B2 and 5 to 50 volume % of silicon carbide whiskers is carried out by predetermining the grain size of 0.5 to 10 m in a predetermined part. with TiB2 or Z
The manufacturing method is similar to that described above, except that r82 is added to the alumina. Alumina matrix 50 containing TiB2 or Z,82
For ceramic composites consisting of ~95% by volume and 5-5% by volume of silicon carbide whiskers, TiB or 718
If the content of TiB2 in the alumina matrix is less than 10%, the fracture toughness of the resulting ceramic composite will be lower than that of TiB2.
Or alumina matrix 50-9 without addition of ZrB2
Ti
There is no effect on fracture toughness due to the addition of 82 or Z or 82. Furthermore, even when T182 or ZrB2 is added to alumina in an amount of 10% or more, the effect of adding TiB2 or Z, B2 (7) on fracture toughness cannot be obtained, similar to when adding TiB2 or ZrB2 (10% or more) to alumina. do not have. Ti for 50-90% alumina
When 10 to 50% by volume of Br2 or ZrB2 is added, the fracture toughness of the resulting ceramic composite is lower than that of TiB.
The fracture toughness of the ceramic composite is improved by about 30% compared to that obtained when no 2 or Z or 82 is added. [Example] Next, the ceramic tool for grinding of the present invention will be described in more detail with reference to Examples. 11 95.3jJ alumina matrix (80 volume ω%) was added with 1% MgO by weight, and at?I-
625d, and the mixture was wet-pulverized and mixed. To this pulverized mixture, 19.3 g (20 volume φ%) of silicon carbide whiskers previously crushed with a bot mill was added and wet mixed to obtain slurry 615.13 in which silicon carbide whiskers were uniformly dispersed. After evaporating acetone from this slurry and drying it, granulation was performed, and 49ty of the granulated alumina-silicon carbide whiskers 305J were
A ceramic composite was obtained by hot pressing at 1800° C. for 0.5 hours under a pressure of l p a. The edge of the thus obtained ceramic composite was machined using a diamond tool to produce a ski edge grinding tool. Regarding this ski edge grinding tool and a commercially available tool steel ski edge sharpener, the hardness is 1.
Bending strength, fracture toughness. A wear resistance test was conducted and the results shown in the table below were obtained. Melon 1” Otsu 11 Alumina 80% by volume and Zr particle size 0.5-10 microns
A ski edge grinding tool was manufactured in the same manner as in the first example except that an alumina matrix consisting of 20% by volume of B2 was used. A performance comparison test with a commercially available tool steel ski edge shear burner was also conducted in the same manner as in the first example, and the results are shown in the table below. ]jJl■ 80% by volume alumina and Ti with a particle size of 0.5 to 10 microns
A ski edge grinding tool was manufactured in the same manner as in the first example except that an alumina matrix consisting of 220% by volume of B2 was used. A performance comparison test with a commercially available ski edge shear burner manufactured by Tool Il was also conducted in the same manner as in the first example. The comparative test results are shown in the table below. Comparative test results These are numerical values representing the lifespan of each sample when the lifespan of Buna μm is taken as 1. As can be seen from the above comparative test results, in the case of the ski edge grinding tool made from single alumina, the blade chipped due to low fracture toughness. It can be seen that the alumina-silicon carbide whisker-based ceramic composite--Buna--has a much higher Iag. Moreover, the grinding tool of the present invention also has a length lIr1! No rust occurred even when exposed to high humidity. Ti 82 or ZrB2 20 in alumina matrix
It can be seen that the relative life of the grinding tool obtained from the ceramic composite containing % by volume is improved as the fracture toughness is improved. [Effects of the Invention] A ceramic composite consisting of 50 to 95% by volume of alumina matrix and 5 to 50% by volume of silicon carbide whiskers does not rust even if exposed to high humidity for a long period of time.
Since the relative life span is extremely excellent, it is useful as a grinding tool such as ski edges. 10-50% by volume Ti82 or zr based on alumina
A ceramic composite consisting of a 50 to 95 volume M% alumina matrix containing B2 and a 5 to 50 volume% silicon carbide matrix does not rust even if placed under Fiilia degrees for a long period of time, and Ti82 Also, since the relative f life is further improved compared to a ceramic composite without the addition of ZrB2, it is extremely useful as a tool for extracting ωll, such as a ski edge. Agent 4F Physician Takeshi Funa Yama
Claims (2)
炭化ケイ素ウィスカーの５〜５０容量％とアルミナマト
リックスの５０〜９５容量％とを均一に分散させたセラ
ミック複合体からなる研削用セラミック工具。(1) For grinding consisting of a ceramic composite in which 5 to 50 volume % of silicon carbide whiskers with a diameter of 0.5 to 2.5 μm and a length of 10 to 80 μm and 50 to 95 volume % of an alumina matrix are uniformly dispersed. ceramic tools.
た、粒径０．５〜１０μｍの硼化物の一種を１０〜５０
容量％の割合で含有するアルミナマトリックス５０〜９
５容量％と直径０．５〜２．５μｍ、長さ１０〜８０μ
ｍの炭化ケイ素ウィスカーの５〜５０容量％とを均一に
分散させたセラミック複合体からなる研削用セラミツク
工具。(2) 10 to 50 borides with a particle size of 0.5 to 10 μm selected from the group consisting of TiB_2 and ZrB_2
Alumina matrix containing 50 to 9% by volume
5% by volume, diameter 0.5-2.5μm, length 10-80μm
A ceramic tool for grinding comprising a ceramic composite material in which 5 to 50 volume % of silicon carbide whiskers of 50 m to 50 m are uniformly dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26048187A JPH01103267A (en) | 1987-10-15 | 1987-10-15 | Grinding ceramic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26048187A JPH01103267A (en) | 1987-10-15 | 1987-10-15 | Grinding ceramic tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01103267A true JPH01103267A (en) | 1989-04-20 |
Family
ID=17348555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26048187A Pending JPH01103267A (en) | 1987-10-15 | 1987-10-15 | Grinding ceramic tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01103267A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659708A1 (en) * | 1993-12-21 | 1995-06-28 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Alumina based ceramic material and method of manufacturing the same |
| CN109048693A (en) * | 2018-09-18 | 2018-12-21 | 河南工业大学 | A kind of toughened and reinforced method of super-hard abrasive tool vitrified bond |
-
1987
- 1987-10-15 JP JP26048187A patent/JPH01103267A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659708A1 (en) * | 1993-12-21 | 1995-06-28 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Alumina based ceramic material and method of manufacturing the same |
| CN109048693A (en) * | 2018-09-18 | 2018-12-21 | 河南工业大学 | A kind of toughened and reinforced method of super-hard abrasive tool vitrified bond |
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