JPWO2012086679A1 - Inorganic media for barrel polishing - Google Patents
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- 238000005498 polishing Methods 0.000 title claims abstract description 63
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010419 fine particle Substances 0.000 claims abstract description 6
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000292 calcium oxide Substances 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 6
- 239000002440 industrial waste Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 21
- 239000000203 mixture Substances 0.000 description 7
- 238000010304 firing Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000013028 medium composition Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
Abstract
粗仕上げ研磨を可能とするとともに耐磨耗性能に優れたバレル研磨用無機質メディアを提供する。バレル研磨により生じるスラッジが、産業廃棄物として処理されるので環境負荷への影響も大きく、且つコストにも大きく影響することに鑑みて、粗仕上げ研磨を可能とするとともに耐磨耗性能に優れたバレル研磨用無機質メディアを得るために、粘土質微粒子と研磨材粒子との混合材料を焼結させ、バレル研磨用無機質メディアは、少なくとも、６０〜８０重量％の酸化アルミニウムと、１０〜３０重量％の二酸化珪素と、４〜８重量％の酸化ジルコニウムと、１〜３重量％の酸化カルシウムとを含む。The present invention provides an inorganic medium for barrel polishing that enables rough finishing polishing and has excellent wear resistance. Because sludge generated by barrel polishing is treated as industrial waste, it has a large impact on the environmental impact and also has a large impact on cost. In order to obtain an inorganic medium for barrel polishing, a mixed material of clayey fine particles and abrasive particles is sintered, and the barrel polishing inorganic medium includes at least 60 to 80 wt% aluminum oxide and 10 to 30 wt%. Silicon dioxide, 4-8% by weight zirconium oxide, and 1-3% by weight calcium oxide.
Description
本発明は、被研磨物品のバリ取り、Ｒ付け、平滑化、光沢出し等のために行われるバレル研磨に用いられるバレル研磨用無機質メディアに関する。 The present invention relates to an inorganic medium for barrel polishing used for barrel polishing performed for deburring, rounding, smoothing, glossing and the like of an article to be polished.
バレル研磨用のメディア（「研磨石」とも呼ばれている）は、研磨目的に合わせて数ミリから数十ミリの球形、円柱形、三角錐形、三角柱形等の任意形状に成形した研磨力を有する小粒体である。このバレル研磨用メディアは、一般的に、主として研磨力を担う研磨材と、この研磨材を内在して研磨石を実質的に構成する結合材とにより構成されている。 Barrel polishing media (also called “abrasive stone”) is a polishing force formed into an arbitrary shape such as a sphere, cylinder, triangular pyramid, triangular prism, etc. It is a small particle having. This barrel polishing medium is generally composed of an abrasive mainly responsible for the polishing force and a binder that essentially contains the abrasive and constitutes a grinding stone.
無機質メディアは、アルミナ等の砥粒とボーキサイト等の無機質結合材との混合材料を焼結して形成されるものであって、安価であるとともに研磨力が大きいので、バリ取りやＲ付け等の粗仕上げ研磨に使用されることが多い（特許文献１，２参照）。
An inorganic medium is formed by sintering a mixed material of abrasive grains such as alumina and an inorganic binder such as bauxite, and is inexpensive and has high polishing power. It is often used for rough finish polishing (see
ところで、バレル研磨は、被研磨物品、研磨用メディア及び研磨水からなるマスを研磨槽内に入れ、研磨層を自転、公転、若しくは振動させること、又は底部の回転盤を回転させることでマスを流動させることにより行われる。すなわち、このマスの流動の結果生じる被研磨物品とメディアとの摩擦力により被研磨物品のバリ取り、Ｒ付け、平滑化、光沢出し等を行う。このようなバレル研磨は、複雑な形状の物品を一度に大量処理できるため従来から広く物品の製造工程に採用されている。しかし、研磨することにより生じるスラッジは、産業廃棄物として処理するため、環境負荷への影響も大きく、コストも高くなるという問題があった。 By the way, in barrel polishing, a mass composed of an article to be polished, a polishing media and polishing water is put in a polishing tank, and the polishing layer is rotated, revolved, or vibrated, or the bottom is rotated to rotate the mass. This is done by flowing. That is, deburring, rounding, smoothing, glossing, etc. of the article to be polished are performed by the frictional force between the article to be polished and the media generated as a result of the mass flow. Such barrel polishing has been widely used in the manufacturing process of articles since it can process a large number of articles having complicated shapes at a time. However, since the sludge generated by polishing is treated as industrial waste, there is a problem that the impact on the environment is large and the cost is high.
本発明の目的は、粗仕上げ研磨を可能とするとともに耐磨耗性能に優れたバレル研磨用無機質メディアを提供することにある。 An object of the present invention is to provide an inorganic medium for barrel polishing capable of rough finishing polishing and having excellent wear resistance.
上記の目的を達成するために本発明に係るバレル研磨用無機質メディアは、焼結体であるバレル研磨用無機質メディアであって、６０〜８０重量％の酸化アルミニウムと、１０〜３０重量％の二酸化珪素と、４〜８重量％の酸化ジルコニウムと、１〜３重量％の酸化カルシウムとを少なくとも含むことを特徴としている。
このように構成された本発明においては、焼結体であるバレル研磨用無機質メディアが、６０〜８０重量％の酸化アルミニウムを主成分として含み且つ４〜８重量％の酸化ジルコニウムを成分として含むので、粗仕上げ研磨を可能としながら耐磨耗性能の向上を実現することが出来る。In order to achieve the above object, the barrel polishing inorganic medium according to the present invention is a barrel polishing inorganic medium which is a sintered body, comprising 60 to 80% by weight of aluminum oxide and 10 to 30% by weight of dioxide dioxide. It is characterized by containing at least silicon, 4 to 8% by weight of zirconium oxide, and 1 to 3% by weight of calcium oxide.
In the present invention configured as described above, the inorganic material for barrel polishing which is a sintered body contains 60 to 80% by weight of aluminum oxide as a main component and 4 to 8% by weight of zirconium oxide as a component. In addition, it is possible to achieve an improvement in wear resistance while enabling rough finish polishing.
また、本発明において、好ましくは、焼結体は、粘土質微粒子と研磨材粒子とを含む混合材料を焼結させた焼結体である。 In the present invention, preferably, the sintered body is a sintered body obtained by sintering a mixed material containing clayey fine particles and abrasive particles.
本発明は、粗仕上げ研磨を可能としながら耐磨耗性能の向上を実現し、これにより、産業廃棄物低減によるコスト削減及び環境負荷低減を実現する。 The present invention realizes improvement in wear resistance performance while enabling rough finish polishing, thereby realizing cost reduction and environmental load reduction by reducing industrial waste.
以下、本発明の実施形態によるバレル研磨用無機質メディアについて説明する。図１は、本発明の実施形態によるバレル研磨用無機質メディアの例を示す斜視図である。
本実施形態によるバレル研磨用無機質メディアは、研磨目的に合わせて数ミリから数十ミリの球形、円柱形、三角錐形、三角柱形等の任意形状に成形される。図１（ａ）〜（ｄ）に、その形状の例を示す。図１（ａ）は、三角柱形、図１（ｂ）は、三角柱の中間部を斜めに切断して得られる形状、図１（ｃ）は、球形、図１（ｄ）は、円柱形である。Hereinafter, an inorganic medium for barrel polishing according to an embodiment of the present invention will be described. FIG. 1 is a perspective view illustrating an example of an inorganic medium for barrel polishing according to an embodiment of the present invention.
The inorganic medium for barrel polishing according to the present embodiment is formed into an arbitrary shape such as a spherical shape, a cylindrical shape, a triangular pyramid shape, a triangular prism shape, etc. of several millimeters to several tens of millimeters according to the purpose of polishing. The example of the shape is shown to Fig.1 (a)-(d). 1A is a triangular prism shape, FIG. 1B is a shape obtained by obliquely cutting an intermediate portion of the triangular prism, FIG. 1C is a spherical shape, and FIG. 1D is a cylindrical shape. is there.
本発明の実施形態による研磨用無機質メディア（以下、単に「メディア」又は「本発明のメディア」ともいう。）は、粘土質微粒子と研磨材粒子との混合材料が、６０〜８０重量％（研磨用無機質メディアの重量に対する重量比）の酸化アルミニウム（Ａｌ2Ｏ3）と、１０〜３０重量％の二酸化珪素（ＳｉＯ2）と、４〜８重量％の酸化ジルコニウム（ＺｒＯ2）と、１〜３重量％の酸化カルシウム（ＣａＯ）とを少なくとも含むように調整し、このような組成を有する混合材料を焼結させたものである。このような組成の混合材料を焼結させることにより得られたメディアは、６０〜８０重量％の酸化アルミニウム（Ａｌ2Ｏ3）と、１０〜３０重量％の二酸化珪素（ＳｉＯ2）と、４〜８重量％の酸化ジルコニウム（ＺｒＯ2）と、１〜３重量％の酸化カルシウム（ＣａＯ）とを含む。以下の実施例で示すように、従来のメディアに比べて、研磨力を維持した状態で損耗率を大幅に改善できる。
ここで、粘土質微粒子とは、集まって粘土状となり得る微粒子である。例えば、酸化アルミニウム、酸化ジルコニウム、二酸化珪素、酸化カルシウム、酸化マグネシウム等が混ざっている状態を意味する。また、研磨材粒子は、少なくとも酸化アルミニウムを含む粒子であれば良い。The inorganic media for polishing according to the embodiment of the present invention (hereinafter, also simply referred to as “media” or “media of the present invention”) is a mixture of clay particles and abrasive particles in an amount of 60 to 80% by weight (polishing). Aluminum oxide (Al 2 O 3 ) in a weight ratio with respect to the weight of the inorganic medium for use, 10 to 30% by weight of silicon dioxide (SiO 2 ), 4 to 8% by weight of zirconium oxide (ZrO 2 ), 1 to The mixture is adjusted to contain at least 3% by weight of calcium oxide (CaO), and a mixed material having such a composition is sintered. A medium obtained by sintering a mixed material having such a composition has 60 to 80% by weight of aluminum oxide (Al 2 O 3 ), 10 to 30% by weight of silicon dioxide (SiO 2 ), 4 and 8% by weight of zirconium oxide (ZrO 2), and a 1 to 3 wt% of calcium oxide (CaO). As shown in the following examples, the wear rate can be greatly improved while maintaining the polishing force as compared with the conventional media.
Here, the clayey fine particles are fine particles that can be collected to form a clay. For example, it means a state in which aluminum oxide, zirconium oxide, silicon dioxide, calcium oxide, magnesium oxide and the like are mixed. The abrasive particles may be particles containing at least aluminum oxide.
次に、本発明に係る実施例１〜３のメディアを、本発明と比較するための比較例１，２のメディアとともに説明する。比較例１は、従来から広く粗仕上げ加工に用いられているメディアの組成の一例である。比較例２は、光沢仕上げに使用される酸化アルミニウム主体の結合材に研磨材粒子を混合して研磨力を粗仕上げ加工できるように配合した例である。実施例１〜３と、比較例１，２の各成分の割合は、表１のとおりである。 Next, the media of Examples 1 to 3 according to the present invention will be described together with the media of Comparative Examples 1 and 2 for comparison with the present invention. Comparative Example 1 is an example of a medium composition that has been widely used for rough finishing. Comparative Example 2 is an example in which abrasive particles are mixed with a binder mainly composed of aluminum oxide used for gloss finish so that the polishing power can be roughly finished. The ratio of each component of Examples 1 to 3 and Comparative Examples 1 and 2 is as shown in Table 1.
実施例１〜３のメディアと、比較例１〜２のメディアとは、例えば次に説明するような従来と同様の方法により得られる。尚、製造方法はこれに限られるものではなく、研磨の目的に合わせて決められるメディアの形状に応じて適宜従来から慣用的に行われている方法を選択して製造してもよい。 The media of Examples 1 to 3 and the media of Comparative Examples 1 and 2 are obtained by a method similar to the conventional method as described below, for example. Note that the manufacturing method is not limited to this, and a method conventionally conventionally used can be selected as appropriate according to the shape of the medium determined according to the purpose of polishing.
まず、表１の各配合率となるように、各原料を混合し、約１５％の水を加えたスラリーとして混練し、得られたスラリーを押出成形機に投入して１辺が約１５ｍｍ程度の三角柱状に成形し、それを長さ（三角柱の高さ）約１５ｍｍ程度となるように切断し、乾燥させてメディアグリーン体を得る。 First, each raw material is mixed so as to achieve each blending ratio in Table 1, and kneaded as a slurry to which about 15% of water is added, and the obtained slurry is put into an extrusion molding machine, and one side is about 15 mm. Are cut into a length (the height of the triangular prism) of about 15 mm and dried to obtain a media green body.
次に、得られたメディアグリーン体を耐熱容器に入れ、温度管理された焼成炉内において温度１３００〜１５００℃で約２時間焼成することにより各メディアを得る。この場合、焼結温度が１３００℃より低ければメディアの強度が低下し、焼成温度が１５００℃より高ければメディアの形状を保つことができない。また、温度１３００〜１５００℃の範囲内での好適な焼成温度（例えば、約１４００℃）はメディアの組成により調節する必要があるから、初めての成分や形状のメディアを焼成しようとする場合には、事前に試料を作成しその焼成試験を行って好適な焼成温度を調べておく必要があることはいうまでもない。 Next, the obtained media green body is put into a heat-resistant container, and each medium is obtained by firing at a temperature of 1300 to 1500 ° C. for about 2 hours in a temperature-controlled firing furnace. In this case, if the sintering temperature is lower than 1300 ° C., the strength of the media decreases, and if the firing temperature is higher than 1500 ° C., the shape of the media cannot be maintained. Moreover, since it is necessary to adjust the suitable baking temperature (for example, about 1400 degreeC) within the temperature range of 1300-1500 degreeC with the composition of a medium, when it is going to bake the media of the first component and shape. Needless to say, it is necessary to prepare a sample in advance and conduct a firing test to find a suitable firing temperature.
得られたメディア１２リットルを新東工業（株）製のバレル研磨装置（パワーロールフローＥＶＦＸ−１）に、水１０リットル、コンパウンド７ミリリットルとともに入れた。被加工物としては、直径２２ｍｍで長さ１５ｍｍの円柱状の炭素鋼（Ｓ４５Ｃ ＪＩＳ規格）（Ｃ：0.42〜0.48％、Ｓｉ：0.15〜0.35％、Ｍｎ：0.60〜0.90％、Ｐ：0.03％以下、Ｓ：0.035％以下）製の試験片を混入し、１時間の研磨テストを実施した。図２に、研磨石の重量減少の割合を計測して求めた損耗率の結果を示す。図３に、試験片の重量減少量を計測して求めた研磨量（研磨力を示すものとして）の結果を示す。図２及び図３中において、Ｅ１，Ｅ２，Ｅ３は、それぞれ実施例１，２，３の結果を示し、ＣＥ１，ＣＥ２は、比較例１，２の結果を示す。図２中の縦軸は、損耗率（％）を示し、図３中の縦軸は、研磨量（ｍｇ）を示す。 12 liters of the obtained media was put into a barrel polishing apparatus (Power Roll Flow EVFX-1) manufactured by Shinto Kogyo Co., Ltd. together with 10 liters of water and 7 milliliters of a compound. As workpieces, cylindrical carbon steel with a diameter of 22 mm and a length of 15 mm (S45C JIS standard) (C: 0.42 to 0.48%, Si: 0.15 to 0.35%, Mn: 0.60 to 0.90%, P: 0.03% or less , S: 0.035% or less), and a 1 hour polishing test was conducted. FIG. 2 shows the result of the wear rate obtained by measuring the rate of weight reduction of the grinding stone. FIG. 3 shows the result of the polishing amount (assuming the polishing power) obtained by measuring the weight reduction amount of the test piece. 2 and 3, E1, E2, and E3 show the results of Examples 1, 2, and 3, respectively, and CE1 and CE2 show the results of Comparative Examples 1 and 2, respectively. The vertical axis in FIG. 2 indicates the wear rate (%), and the vertical axis in FIG. 3 indicates the polishing amount (mg).
図２の結果より損耗率は、比較例１（従来広く用いられた例）が８．６２％であるのに対し、比較例２（酸化アルミニウム主体の組成の例）が５．２０％であり、比較例１よりは改善（比較例１の６０％程度）されていることが示される。実施例１では、酸化ジルコニウム成分を配合することにより、損耗率を３．３４％とすることができ、比較例１，２に比べて大幅に改善（比較例１の３９％程度、比較例２の６４％程度）されたことが示されている。実施例２，３の場合にも、実施例１と略同様の結果が得られた。 From the results of FIG. 2, the wear rate is 8.62% in Comparative Example 1 (an example widely used in the past), whereas it is 5.20% in Comparative Example 2 (an example of a composition mainly composed of aluminum oxide). It is shown that it is improved (about 60% of Comparative Example 1) over Comparative Example 1. In Example 1, by adding a zirconium oxide component, the wear rate can be 3.34%, which is a significant improvement over Comparative Examples 1 and 2 (about 39% of Comparative Example 1, Comparative Example 2). (About 64%). In Examples 2 and 3, the same results as in Example 1 were obtained.
また、図３の結果より、比較例１が研磨量２０７ｍｇであり、比較例２が研磨量１９１．５ｍｇであるのに対して、実施例１が１６２．５ｍｇとなっており、損耗率の減少とともに研磨力が減少している。一般に、損耗率と研磨力（研磨量）は比例の関係にあるといわれているが、メディアの損耗率１％に対する研磨量を比較すると、比較例１では２４．０であり、比較例２では３６．８であるのに対し、実施例１では４８．７となっており、実施例１の研磨効率が非常に大きいことが確認できた。実施例２，３の場合にも、実施例１と略同様の結果が得られており、該実施例の研磨効率が非常に大きいことが確認できた。 Further, from the result of FIG. 3, Comparative Example 1 has a polishing amount of 207 mg and Comparative Example 2 has a polishing amount of 191.5 mg, whereas Example 1 has a polishing amount of 162.5 mg, and the wear rate is reduced. At the same time, the polishing power decreases. In general, it is said that the wear rate and the polishing force (polishing amount) are in a proportional relationship. However, when the polishing amount with respect to the media wear rate of 1% is compared, it is 24.0 in Comparative Example 1 and in Comparative Example 2. While it was 36.8, it was 48.7 in Example 1, and it was confirmed that the polishing efficiency of Example 1 was very high. In the case of Examples 2 and 3, substantially the same result as in Example 1 was obtained, and it was confirmed that the polishing efficiency of the Example was very large.
以上のように、実施例１〜３のメディアは、粗仕上げ研磨を可能としながら耐磨耗性能の向上を実現している。従来（比較例１）のメディアと比べて、損耗率が約４０％となるため、２倍以上の寿命となり、且つ、スラッジの発生量も減少し、産業廃棄物の発生量が大幅に削減でき、環境負荷の低減に寄与できる。 As described above, the media of Examples 1 to 3 achieve improved wear resistance performance while enabling rough finish polishing. Compared to the conventional media (Comparative Example 1), the wear rate is about 40%, so the service life is more than doubled and the amount of sludge generated is reduced, greatly reducing the amount of industrial waste generated. Can contribute to the reduction of environmental load.
本発明者達は、じん性（靭性）の低い酸化アルミニウムに、じん性の高い酸化ジルコニウムを添加することにより耐摩耗性が向上することを見出し、この知見に基づいて、酸化アルミニウムをメディアの主成分とするとともに酸化ジルコニウム成分を適正に添加した配合とすることにより、粗仕上げ研磨を可能としながら耐磨耗性能の向上を実現する範囲を得ることが出来た。 The present inventors have found that wear resistance is improved by adding zirconium oxide having high toughness to aluminum oxide having low toughness (toughness), and based on this finding, aluminum oxide is used as the main medium of media. By using a composition in which the zirconium oxide component was appropriately added as a component, it was possible to obtain a range in which the wear resistance performance was improved while enabling rough finish polishing.
本発明を適用したバレル研磨用無機質メディアは、粘土質微粒子と研磨材粒子との混合材料を焼結させ、上述のような成分状態とされた酸化アルミニウムと、二酸化珪素と、酸化ジルコニウムと、酸化カルシウムとを含むことにより、粗仕上げ研磨を可能としながら耐磨耗性能の向上を実現し、これにより、産業廃棄物低減によるコスト削減及び環境負荷低減を実現する。 An inorganic medium for barrel polishing to which the present invention is applied is obtained by sintering a mixed material of clayey fine particles and abrasive particles to form the above-described component states of aluminum oxide, silicon dioxide, zirconium oxide, and oxidation. By including calcium, it is possible to improve the wear resistance while enabling rough finish polishing, thereby realizing cost reduction and reduction of environmental load by reducing industrial waste.
尚、上述したメディアは、三角柱形の形状のものに限られるものではなく、球形、円柱形や、円柱の断面を楕円形状とした形状、三角錐形を含む各種角錐形、三角柱形を含む各種角柱形等であってもよい。また、円柱や角柱をその軸（ここで軸とは、例えば円形や三角形である断面に直交する方向を意味するものとする）に直交する平面に対して所定の角度を有する平面で切断したような形状であってもよい。さらに、略三角柱形状の側面が内側に窪み、該略三角柱形状の三角形を構成する各頂角部分が円弧形状である（例えば特開２００３−２３１０５３号公報参照）形状であってもよく、さらにまた、これらの形状をその軸に直交する平面に対して所定の角度を有する平面で切断したような形状であってもよい。 The above-mentioned media is not limited to a triangular prism shape, but a spherical shape, a cylindrical shape, an elliptical cross section, various pyramid shapes including a triangular pyramid shape, and various types including a triangular prism shape. A prismatic shape or the like may be used. In addition, it seems that a cylinder or a prism is cut by a plane having a predetermined angle with respect to a plane perpendicular to its axis (here, the axis means a direction orthogonal to a cross section, for example, a circle or a triangle). It may be a simple shape. Further, the side surface of the substantially triangular prism shape may be recessed inward, and each apex portion constituting the substantially triangular prism shape triangle may be an arc shape (see, for example, Japanese Patent Application Laid-Open No. 2003-231053). These shapes may be cut by a plane having a predetermined angle with respect to a plane perpendicular to the axis.
１ バレル研磨用無機質メディア
Ｅ１，Ｅ２，Ｅ３ 実施例１，２，３の結果
ＣＥ１，ＣＥ２ 比較例１，２の結果1 Inorganic media for barrel polishing E1, E2, E3 Results of Examples 1, 2, 3 CE1, CE2 Results of Comparative Examples 1, 2
Claims (2)
６０〜８０重量％の酸化アルミニウムと、１０〜３０重量％の二酸化珪素と、４〜８重量％の酸化ジルコニウムと、１〜３重量％の酸化カルシウムとを少なくとも含むことを特徴とするバレル研磨用無機質メディア。An inorganic medium for barrel polishing that is a sintered body,
For barrel polishing, comprising at least 60 to 80 wt% aluminum oxide, 10 to 30 wt% silicon dioxide, 4 to 8 wt% zirconium oxide, and 1 to 3 wt% calcium oxide Inorganic media.
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| JP6414207B2 (en) * | 2014-04-07 | 2018-10-31 | 新東工業株式会社 | Barrel polishing media and manufacturing method thereof |
| JP7056902B2 (en) * | 2017-07-18 | 2022-04-19 | 株式会社チップトン | Polishing stone for barrel polishing |
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