JP3886242B2 - Grinding method of workpiece in corrosive environment - Google Patents

Grinding method of workpiece in corrosive environment Download PDF

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Publication number
JP3886242B2
JP3886242B2 JP06717798A JP6717798A JP3886242B2 JP 3886242 B2 JP3886242 B2 JP 3886242B2 JP 06717798 A JP06717798 A JP 06717798A JP 6717798 A JP6717798 A JP 6717798A JP 3886242 B2 JP3886242 B2 JP 3886242B2
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Prior art keywords
workpiece
diamond
nickel
cutting
chromium
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JPH10277949A (en
Inventor
タンク クラウス
フリース ロベルト
ディートリッヒ エッカート ユルゲン
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デ ビアス インダストリアル ダイアモンド デイビジヨン （プロプライエタリイ） リミテツド
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/24—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of wood, e.g. furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes

Abstract

A diamond abrasive compact is used for abrading a workpiece in a corrosive environment. The invention has particular application to abrading wood products which contain resins or organic binders. The diamond abrasive compact is characterised by a second phase which comprises chromium and nickel.

Description

【０００１】
【発明の属する技術分野】
本発明は研削（または研摩）方法に係り、特に腐蝕性環境内での研削（または研摩）方法に関するものである。
【０００２】
【従来の技術】
研摩成形体（圧密体）は当業界において周知であり、産業上種々の被加工材の研削用に多用されている。前記成形体は、事実上、成形体の体積で７０％、好ましくは８０〜９０％の量存在する研摩（アブレッシブ）粒子を結合させて硬質多結晶凝集体にしたものから成っている。前記研摩粒子はダイヤモンドまたは立方晶窒化ホウ素である。
【０００３】
研摩成形体はそれ自体で使用してもよく、適当な基板に接合して用いてもよい。通常、基板は焼結炭化物製である。
【０００４】
ダイヤモンド研摩成形体は広範囲の研削作業で使用されている。これらの成形体はダイヤモンドを合成する上で適する溶媒／触媒を通常含む第２相すなわち結合マトリックスを用いて作成することが出来る。１つのそのような成形体がＥＰ−０ １９８ ６５３号に記載されている。この成形体の特徴はクロムと、第２の金属であるニッケル、鉄およびコバルトからなるグループから選ばれた金属とを含む第２相すなわち結合マトリックスを有する。前記クロムは金属形態、炭化クロムおよび／または第２の金属を含む金属間化合物形態で存在する。前記第２の金属は金属形態および／または叙上の金属間化合物の形態で存在する。特に、前記研摩成形体はドレッシング工具または表面加工用ドリルビット（刃）で用いるのが有用である。研摩成形体は消耗し、焼結炭化物基板によっては支援されない。
【０００５】
【発明が解決しようとする課題】
ダイヤモンド研摩成形体は、例えば木材製品の研削、例えば切削において用いられている。ダイヤモンド成形体の硬さと耐摩耗性は、この用途において極めて有用な特性である。木材または木材製品は樹脂およびあらゆる種類の有機バインダを含んでおり、これらはダイヤモンド架台上に残存するので、腐蝕性の洗浄剤で洗浄する必要があり、これらはダイヤモンド研摩成形体をＥＤＭ（放電加工）で再鋭化処理する前にコバルトバインダを浸出せしめてしまう。コバルトバインダが失われると、切削縁がＥＤＭで再鋭化される時にアンダカットを生ずることにつながる。これはまた切削縁のチッピング（欠落）につながることを意味する。
【０００６】
【課題を解決するための手段】
本発明によれば、腐蝕性環境において被加工材を研削する段階は、切削縁または切削点を有する叙上のダイヤモンド研摩成形体を提供する段階と、被加工材を提供する段階と、前記ダイヤモンド研摩成形体の切削縁または切削点を被加工材と接触させる段階と、前記切削縁または切削点を研削態様で被加工材に対して前進せしめる段階とを含む。
【０００７】
本発明で用いられるダイヤモンド研摩成形体はクロムおよびニッケルを有する第２相を有するダイヤモンド多結晶塊体であり、前記成形体のダイヤモンド含有量は成形体体積の少なくとも７０％を占める。好ましくは前記第２相はクロムおよびニッケルから成っており、他の成分は極微量でしかない。そのようなダイヤモンド成形体はバインダおよび／または腐食性洗浄化学薬品が存在する環境で特に良好な耐腐蝕性を有する。
【０００８】
本発明方法では、成形体上に設けられた切削点または切削縁（または切断縁）は研削作用をもって被加工材に対して前進せしめられる。本明細書で用いる用語「研削」は切削（または切断）、穴明け、研摩または任意のそのような研削作業を意味する。このような作業は当業界で周知のように各種形態を取ることが出来、例えば切削縁または切削点の回転、切削縁または切削点または類似のものの往復動のような形態を取ることが出来る。もちろん、前記研削作用はまた切削縁または切削点を静止状態に維持し、被加工材を移動させることにより達成される。
【０００９】
本発明の一観点によれば、叙上のようなダイヤモンド研摩成形体の腐蝕性環境内における被加工材の研削方法としての用途が提供される。
【００１０】
【発明の実施の形態】
【実施例】
本発明のダイヤモンド研摩成形体はクロムおよびニッケルを含む第２相によって特徴づけられる。クロムとニッケル金属の質量比率は典型的には１０：９０〜２５：７５である。第２相では、クロムおよびニッケルの両者が金属形態、炭化物形態および／またはクロムとニッケルの金属間化合物の形態で存在するだろう。
【００１１】
前記ダイヤモンド研摩成形体はバインダおよび／または腐食性洗浄化学薬品が存在する環境下においてすぐれた耐腐蝕性を示すことが判明している。
【００１２】
前記ダイヤモンド研摩成形体は焼結炭化物基板またはモリブデン、タンタルまたはタングステンのような金属層基体に対して接合可能である。
【００１３】
かくして、本発明は木材を含む製品の研削において特に用途を有している。木材製品の例は軟質または硬質の天然木材、積層および被積層のチップボードおよびファイバボード（これはバインダによって接合された木材チップまたはファイバを含む）、圧縮されたファイバおよび鋸屑であるハードボード、およびプライウッドである。前記木材製品はプラスチックまたは他の被覆を施したものであってよい。これらの木材製品の幾つかは樹脂および有機バインダを含んでもよい。腐蝕性の洗浄化学薬品および／またはバインダが存在していても、前述のダイヤモンド研摩成形体の切削縁または切削点には顕著なアンダカットが発生せず、従ってチッピング（欠落）の発生がずっと低くなるということが判明している。前記研削作業は鋸引き、フライス切りまたはプロフイル切削の形態をとることが出来る。そのような用途に用いられる工具は一般的にはサーキュラソー、プロフイルカッタ、エンドミル、フライスカッタおよびルーター（ｒｏｕｔｅｒ：溝切り）のような多先端回転工具である。
【００１４】
次にニッケル／クロム第２相を含むダイヤモンド研摩成形体を作成する方法の一例を述べる。ダイヤモンド粒子塊体（１６．０ｇ）がタンタルカップ内に置かれた。ニッケル／クロム合金のディスク（２．６ｇ）がこのダイヤモンド塊体上に置かれた。ニッケルとクロムの質量比率は８０対２０であった。ニッケル／クロムは充填したタンタルカップの内容量で１４％であった。
【００１５】
充填したカップは慣用の高温度／高圧力機器の反応領域内に置かれ、１５００℃の温度および５．５ＧＰａの圧力にさらされ、これらの条件は１０分間保持された。反応領域からはディスク形状の研摩成形体本体（ボディ）が回収されたが、該本体は金属として、および種々の結合形態としてのクロムおよびニッケルを含む第２相を備え、これがダイヤモンドマス（ｍａｓｓ）中に一様に分布した多結晶ダイヤモンド粒子塊体から成っていた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grinding (or polishing) method, and more particularly to a grinding (or polishing) method in a corrosive environment.
[0002]
[Prior art]
Abrasive compacts (consolidated bodies) are well known in the art and are widely used for grinding various workpieces in the industry. The molded body is essentially made of hard polycrystalline aggregates by combining abrasive particles present in an amount of 70%, preferably 80-90% by volume of the molded body. The abrasive particles are diamond or cubic boron nitride.
[0003]
The abrasive compact may be used by itself or may be used by bonding to a suitable substrate. Usually, the substrate is made of sintered carbide.
[0004]
Diamond abrasive compacts are used in a wide range of grinding operations. These compacts can be made using a second phase or binding matrix that usually contains a solvent / catalyst suitable for synthesizing diamond. One such shaped body is described in EP-0 198 653. The compact has a second phase or bond matrix that includes chromium and a second metal selected from the group consisting of nickel, iron and cobalt. The chromium exists in a metallic form, an intermetallic compound form comprising chromium carbide and / or a second metal. Said second metal is present in metallic form and / or in the form of an intermetallic compound. In particular, it is useful to use the abrasive compact with a dressing tool or a surface processing drill bit. The abrasive compact is depleted and is not supported by the sintered carbide substrate.
[0005]
[Problems to be solved by the invention]
Diamond abrasive compacts are used, for example, in grinding, for example, cutting of wood products. The hardness and wear resistance of the diamond compact are very useful properties for this application. Wood or wood products contain resin and all sorts of organic binders, which remain on the diamond cradle and need to be cleaned with a corrosive cleaning agent, which can be used to make diamond abrasive compacts EDM (electric discharge machining). ) Leaching the cobalt binder before resharpening. Loss of the cobalt binder leads to undercuts when the cutting edge is re-sharpened with EDM. This also means that the cutting edge is chipped.
[0006]
[Means for Solving the Problems]
According to the present invention, the step of grinding the workpiece in a corrosive environment includes the steps of providing an above-described diamond abrasive compact having a cutting edge or cutting point, providing the workpiece, and said diamond Contacting the workpiece with the cutting edge or cutting point of the abrasive compact, and advancing the cutting edge or cutting point relative to the workpiece in a grinding manner.
[0007]
The diamond abrasive compact used in the present invention is a polycrystalline diamond body having a second phase containing chromium and nickel, and the diamond content of the compact accounts for at least 70% of the compact volume. Preferably, the second phase consists of chromium and nickel and the other components are only trace amounts. Such diamond compacts have particularly good corrosion resistance in environments where binders and / or corrosive cleaning chemicals are present.
[0008]
In the method of the present invention, the cutting point or cutting edge (or cutting edge) provided on the molded body is advanced with respect to the workpiece with a grinding action. As used herein, the term “grinding” means cutting (or cutting), drilling, polishing, or any such grinding operation. Such operations can take various forms as is well known in the art, such as rotating the cutting edge or cutting point, reciprocating the cutting edge or cutting point or the like. Of course, the grinding action is also achieved by keeping the cutting edge or cutting point stationary and moving the workpiece.
[0009]
According to one aspect of the present invention, there is provided an application as a grinding method for a workpiece in the corrosive environment of a diamond abrasive compact as described above.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
【Example】
The diamond abrasive compact of the present invention is characterized by a second phase comprising chromium and nickel. The mass ratio of chromium to nickel metal is typically 10:90 to 25:75. In the second phase, both chromium and nickel will exist in metallic form, carbide form and / or intermetallic compound of chromium and nickel.
[0011]
The diamond abrasive compact has been found to exhibit excellent corrosion resistance in an environment where a binder and / or corrosive cleaning chemical is present.
[0012]
The diamond abrasive compact can be bonded to a sintered carbide substrate or a metal layer substrate such as molybdenum, tantalum or tungsten.
[0013]
Thus, the present invention has particular application in the grinding of products containing wood. Examples of wood products are soft or hard natural wood, laminated and laminated chipboards and fiberboards (including wood chips or fibers joined by a binder), hardboards that are compressed fibers and sawdust, and Plywood. The wood product may be plastic or other coated. Some of these wood products may contain resins and organic binders. Even in the presence of corrosive cleaning chemicals and / or binders, there is no significant undercutting at the cutting edges or cutting points of the diamond abrasive compacts described above, and therefore chipping (missing) is much less likely to occur. It has been found that The grinding operation can take the form of sawing, milling or profiling. Tools used for such applications are generally multi-tip rotating tools such as circular saws, profile cutters, end mills, milling cutters and routers.
[0014]
Next, an example of a method for producing a diamond abrasive compact containing a nickel / chromium second phase will be described. A diamond particle mass (16.0 g) was placed in the tantalum cup. A nickel / chromium alloy disk (2.6 g) was placed on the diamond mass. The mass ratio of nickel and chromium was 80:20. Nickel / chromium was 14% in the content of the filled tantalum cup.
[0015]
The filled cup was placed in the reaction zone of a conventional high temperature / high pressure instrument and exposed to a temperature of 1500 ° C. and a pressure of 5.5 GPa, and these conditions were held for 10 minutes. A disc-shaped abrasive compact body (body) was recovered from the reaction zone, the body comprising a second phase comprising chromium and nickel as metals and in various bonding forms, which is a diamond mass. It consisted of a lump of polycrystalline diamond particles uniformly distributed in it.

Claims (8)

切削縁または切削点を有するダイヤモンド研摩成形体であって、該成形体は、クロームおよびニッケルから成り他の成分は極微量である第２相を有し、ダイヤモンドの含有量が成形体の体積の少なくとも７０％である多結晶ダイヤモンド塊体である成形体を提供する段階と、被加工材を提供する段階と、ダイヤモンド研摩成形体の切削縁または切削点を前記被加工材と接触させる段階と、前記切削縁または切削点を研削形態で被加工材に対して前進させる段階とを含む腐蝕性環境における被加工材の研削方法。A diamond abrasive compact having a cutting edge or cutting point, the molded article may contain other ingredients consist chrome and nickel has a second phase is minimal, the content of diamond in the volume of the molded body Providing a shaped body that is a polycrystalline diamond agglomerate that is at least 70%; providing a workpiece; contacting a cutting edge or cutting point of a diamond abrasive compact with the workpiece; A method of grinding a workpiece in a corrosive environment, the method comprising advancing the cutting edge or cutting point relative to the workpiece in a grinding form. ダイヤモンド研摩成形体の第２相がクロームおよびニッケルから成っていることを特徴とする請求項１に記載の方法。  2. A method according to claim 1, wherein the second phase of the diamond abrasive compact consists of chromium and nickel. クロームとニッケルの質量比率が１０：９０〜２５：７５の範囲内にあることを特徴とする請求項１または請求項２に記載の方法。 Mass ratio of chromium and nickel 10: 90-25: The method of claim 1 or claim 2, characterized in that within 75 range. 被加工材が木材製品であることを特徴とする請求項１から請求項３までのいずれか１項に記載の方法。The method according to any one of claims 1, wherein the workpiece is a timber products to claim 3. 木材製品が天然木材、積層および非積層のチップボードおよびファイバボード、ハードボードおよびプライウッドから選択された木材製品であることを特徴とする請求項４に記載の方法。  5. The method of claim 4, wherein the wood product is a wood product selected from natural wood, laminated and non-laminated chipboard and fiberboard, hardboard and plywood. 木材製品がそれに塗布されたプラスチックまたはその他の被覆を有することを特徴とする請求項４または請求項５に記載の方法。  6. A method according to claim 4 or claim 5, wherein the wood product has a plastic or other coating applied to it. 木材製品が樹脂または有機バインダを含むことを特徴とする請求項４から請求項６までのいずれか１項に記載の方法。  The method according to any one of claims 4 to 6, wherein the wood product comprises a resin or an organic binder. 研削が切削、穴あけ、溝形成および研摩から選択されることを特徴とする請求項１から請求項７までのいずれか１項に記載の方法。Ken scraped off the cutting, drilling, the method according to any one of claims 1 to 7, characterized in that it is selected from the channel-shaped formation Contact and polishing.
JP06717798A 1997-03-17 1998-03-17 Grinding method of workpiece in corrosive environment Expired - Fee Related JP3886242B2 (en)

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ZA97/2281 1997-03-17
ZA972281 1997-03-17

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JP3886242B2 true JP3886242B2 (en) 2007-02-28

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EP (1) EP0865876B1 (en)
JP (1) JP3886242B2 (en)
AT (1) ATE258098T1 (en)
CA (1) CA2231929C (en)
DE (1) DE69821153T2 (en)
ES (1) ES2212223T3 (en)
ZA (1) ZA982097B (en)

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ATE548226T1 (en) 2006-09-18 2012-03-15 Auto Kabel Man Gmbh CONNECTION SYSTEM WITH A GROUND STRAP FOR MOTOR VEHICLES
US8505654B2 (en) 2009-10-09 2013-08-13 Element Six Limited Polycrystalline diamond

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EP0198653B1 (en) * 1985-04-09 1991-07-31 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive products
ZA935524B (en) * 1992-08-05 1994-02-24 De Beers Ind Diamond Abrasive product

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CA2231929C (en) 2007-10-02
EP0865876B1 (en) 2004-01-21
EP0865876A2 (en) 1998-09-23
EP0865876A3 (en) 2000-03-15
ATE258098T1 (en) 2004-02-15
DE69821153T2 (en) 2004-07-08
ES2212223T3 (en) 2004-07-16
JPH10277949A (en) 1998-10-20
DE69821153D1 (en) 2004-02-26
CA2231929A1 (en) 1998-09-17
ZA982097B (en) 1998-09-16

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