JPH03190672A - Manufacture of metal bond grindstone - Google Patents
Manufacture of metal bond grindstoneInfo
- Publication number
- JPH03190672A JPH03190672A JP33026689A JP33026689A JPH03190672A JP H03190672 A JPH03190672 A JP H03190672A JP 33026689 A JP33026689 A JP 33026689A JP 33026689 A JP33026689 A JP 33026689A JP H03190672 A JPH03190672 A JP H03190672A
- Authority
- JP
- Japan
- Prior art keywords
- metal bond
- blended
- bond grindstone
- metal
- weight ratio
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000006061 abrasive grain Substances 0.000 claims abstract description 17
- 238000010304 firing Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 10
- 230000014759 maintenance of location Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は砥粒保持力および寿命に優れたメタルボンド砥
石の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a metal bonded grindstone that has excellent abrasive grain retention and long life.
（従来の技術）
ダイヤモンド砥粒や立方晶窒化硼素砥粒などの超砥粒を
含む砥石は、通常はＣｕとＳｎとからなるブロンズタイ
プのメタルボンドを用い、これを４００〜５００ ｋｇ
／ ｃｄの圧力と６００〜８００°Ｃの温度を加えな
がら焼成して製造されるのが普通であった。(Prior art) A grinding wheel containing super abrasive grains such as diamond abrasive grains or cubic boron nitride abrasive grains usually uses a bronze type metal bond made of Cu and Sn, and is made by weighing 400 to 500 kg.
It was usually manufactured by firing while applying a pressure of /cd and a temperature of 600 to 800°C.
ところがこのような従来のメタルボンド砥石の製造法は
、加圧下で焼成を行う必要があるために大量生産が行い
にくいうえ、砥粒保持力の点でもなお満足できないもの
があった。However, such conventional manufacturing methods for metal bonded grindstones require firing under pressure, which makes mass production difficult, and the abrasive retention remains unsatisfactory.
（発明が解決しようとする課題）
本発明は上記したような従来の問題点を解決して、砥粒
保持力に優れたメタルボンド砥石を、大量生産すること
ができるメタルボンド砥石の製造法を提供するために完
成されたものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and provides a manufacturing method for metal bonded grinding wheels that can mass-produce metal bonded grinding wheels with excellent abrasive grain retention. It has been completed to provide.
（課題を解決するための手段）
上記の課題は、Ｃｏに対してＣｕを重量比で１０〜５０
％配合し、更にこの配合されたＣｕに対してＡｇを２０
〜７０％配合したメタルボンドを超砥粒と混合して室温
で５００〜３０００ ｋｇ ／ ｃｄで加圧成形し、そ
の後に５３０〜１０００°Ｃで焼成することを特徴とす
るメタルボンド砥石の製造法によって解決できる。(Means for solving the problem) The above problem is achieved by adding Cu to Co at a weight ratio of 10 to 50.
%, and further added 20% Ag to this blended Cu.
A method for producing a metal bond grindstone, which comprises mixing ~70% metal bond with super abrasive grains, press-forming the mixture at room temperature at 500-3000 kg/cd, and then firing at 530-1000°C. It can be solved by
上記のように本発明においてはＣ０１Ｃｕ、 Ａｇの３
成分系のメタルボンドが使用される。ここでＣＯは粒径
が５〜２５０μ程度の超砥粒を強固に保持するための基
本的な成分であり、粒径が１μ程度の細かい粉末を容易
に得られる利点もある。As mentioned above, in the present invention, 3 of C01Cu and Ag
A component-based metal bond is used. Here, CO is a basic component for firmly holding superabrasive grains with a particle size of about 5 to 250 μm, and has the advantage that fine powder with a particle size of about 1 μm can be easily obtained.
Ｃｕはメタルボンドの融点を制御するための成分であり
、粉末の状態でＣｏに対して重量比で１０〜５０％の割
合で配合される。ここでＣｕが１０％未満であるとメタ
ルボンドの融点が高くなり過ぎて超砥粒を損傷するおそ
れがあり、逆に５０％を越えると焼結強度が低下して砥
粒保持力が低くなる。Cu is a component for controlling the melting point of the metal bond, and is blended in powder form at a weight ratio of 10 to 50% with respect to Co. If Cu is less than 10%, the melting point of the metal bond will become too high and there is a risk of damaging the superabrasive, while if it exceeds 50%, the sintering strength will decrease and the abrasive grain retention will decrease. .
Ａｇはその展伸性を利用してメタルボンドの硬さを調整
するための成分であり、粉末の状態でＣｕに対して２０
〜７０％の重量比で配合される。Ａｇが２０％未満であ
るとメタルボンドの硬度が大きくなって成形性が低下し
、逆に７０％を越えるとＡｇ−Ｃｕ系の低融点の合金が
形成されて溶けてしま゛い、目的とする砥粒保持力を得
ることができない。Ag is a component that uses its extensibility to adjust the hardness of metal bonds, and in powder form it has a hardness of 20
It is blended at a weight ratio of ~70%. If the Ag content is less than 20%, the hardness of the metal bond will increase and the formability will decrease, while if it exceeds 70%, a low melting point Ag-Cu alloy will be formed and melted, which will not meet the purpose. It is not possible to obtain the abrasive retention force required for this purpose.
このような配合のメタルボンドと超砥粒とを適宜の比率
で混合したうえ、従来とは異なり室温で５００〜３００
０ ｋｇ ／ ｃＪで加圧成形する。ここでプレス圧力
が５００ ｋｇ ／ ｃ１未満であると各粉末相互の密
着力が低下して強度のあるメタルボンド砥石が得られず
、逆に３０００ｋｇ／Ｃ１１を越えても性能の向上は認
められないので、経済的な観点から３０００ｋｇ／ｃ−
以下とした。その後に成形体を５３０〜１０００’ｃで
焼成すれば、Ｃｏ、 Ｃｕ、八ｇの３成分の粉末の表面
が相互に融着するとともに超砥粒を強固に保持して砥粒
保持力および強度に優れたメタルボンド砥石を得ること
ができる。ここで焼成温度が５３０°Ｃ未満であるとメ
タルボンドの焼結強度が不足し、また１０００°Ｃを越
えるとメタルボンドの溶融が開始してやはりメタルボン
ドの焼結強度が不足するとともに、超砥粒が損傷される
こととなる。The metal bond and superabrasive grains are mixed in an appropriate ratio, and unlike conventional methods, a
Pressure mold at 0 kg/cJ. If the pressing pressure is less than 500 kg/c1, the adhesion between the powders will decrease and a strong metal bonded grinding wheel will not be obtained, and on the other hand, if it exceeds 3000 kg/c11, no improvement in performance will be observed. Therefore, from an economical point of view, 3000kg/c-
The following was made. If the molded body is then fired at 530 to 1000'c, the surfaces of the three component powders of Co, Cu, and 8g will be fused to each other, and the superabrasive grains will be firmly held, increasing the abrasive grain retention and strength. It is possible to obtain an excellent metal bond grinding wheel. If the firing temperature is less than 530°C, the sintering strength of the metal bond will be insufficient, and if it exceeds 1000°C, the metal bond will start to melt, which will also result in insufficient sintering strength of the metal bond. The abrasive grains will be damaged.
本発明の方法により得られたメタルボンド砥石はＣｏ、
Ｃｕ、八ｇの３成分を最適な比率で含有させたもので
あるから砥粒保持力および強度に優れ、また寿命も従来
のブロンズメタルボンドの超砥粒砥石の１．５倍以上と
なる。しかも本発明によれば従来のような加圧下での焼
結を必要としないので、大量生産を容易に行なえる利点
がある。The metal bonded grindstone obtained by the method of the present invention contains Co,
Since it contains the three components of Cu and 8g in the optimum ratio, it has excellent abrasive grain retention and strength, and the lifespan is more than 1.5 times that of conventional bronze metal bond superabrasive grindstones. Moreover, according to the present invention, there is no need for sintering under pressure as in the conventional method, so there is an advantage that mass production can be easily carried out.
次に本発明の好ましい実施例を示す。Next, preferred embodiments of the present invention will be shown.
（実施例）
Ｃｏ ： Ｃｕ ： Ａｇの重量比が６０．８ ： ２
６．１：１３．１ となるようにこれらの各金属の粉末
（粒径はＣｏが１μ程度、ＣｕとＡｇが４４μ程度）を
配合したメタルボンドと、粒径が２５μ程度のダイヤモ
ンド砥粒とを混合し、室温下で圧力３０００ ｋｇ ／
ｃＪのコールドプレスを行い、その後に炉に入れて８
５０°Ｃで焼成した。(Example) The weight ratio of Co:Cu:Ag is 60.8:2
A metal bond containing powder of each of these metals (particle size is approximately 1 μm for Co, approximately 44 μm for Cu and Ag) with a ratio of 6.1:13.1, and diamond abrasive grains with a particle size of approximately 25 μm. were mixed at room temperature under a pressure of 3000 kg/
Cold press cJ and then put it in the oven 8
It was fired at 50°C.
一方、これと比較するために従来のようにＣｕ：Ｓｎ
： Ｃｏ ： Ａｇの重量比が４８：１１：３４：４で
あるブロンズボンドを用い、これに粒径が２５μ程度の
ダイヤモンド砥粒を混合したうえａｏｏ ”ｃに加熱し
ながら５００ ｋｇ ／ ｃＪの圧力を加えて焼成する
方法でブロンズメタルボンドの超砥粒砥石を製造した。On the other hand, for comparison, Cu:Sn
A bronze bond with a weight ratio of :Co:Ag of 48:11:34:4 was used, diamond abrasive grains with a grain size of about 25μ were mixed therein, and the mixture was heated to a pressure of 500 kg/cJ while being heated to AOO"C. A bronze metal bond super-abrasive grinding wheel was manufactured by adding and firing.
これらの両方の超砥粒砥石をホーニング盤に取付け、直
径６ｍ、長さ２０ｃｍの円筒状のワークを研削するテス
トを行った。このときの切込み量はストローク当たり０
．００１即、砥石回転数は５６０ｒｐｍ、ストローク幅
は１０薗、ストローク回数は毎分１２０回とした。Both of these superabrasive grindstones were attached to a honing machine, and a test was conducted to grind a cylindrical workpiece with a diameter of 6 m and a length of 20 cm. The depth of cut at this time is 0 per stroke.
．． 001, the grindstone rotation speed was 560 rpm, the stroke width was 10 mm, and the number of strokes was 120 times per minute.
この結果、本発明の方法により製造されたメタルボンド
砥石の研削比は４１２０であったが、従来法により製造
されたメタルボンド砥石の研削比は２７８０であり、本
発明の優位性が確認できた。As a result, the grinding ratio of the metal bond grinding wheel manufactured by the method of the present invention was 4120, while the grinding ratio of the metal bond grinding wheel manufactured by the conventional method was 2780, confirming the superiority of the present invention. .
（発明の効果）
以上に説明したように、本発明によればメタルボンドの
組成と焼成方法を工夫することにより、砥粒保持力に優
れたメタルボンド砥石を大量生産することができ、また
砥石寿命を従来の１．５倍程度まで延長させることもで
きる。(Effects of the Invention) As explained above, according to the present invention, by devising the composition and firing method of the metal bond, it is possible to mass-produce metal bond grindstones with excellent abrasive grain retention. It is also possible to extend the lifespan to about 1.5 times that of conventional products.
よって本発明は従来の問題点を解決したメタルボンド砥
石の製造法として、業界に寄与するところは極めて大き
いものである。Therefore, the present invention makes an extremely large contribution to the industry as a method for manufacturing metal bonded grindstones that solves the conventional problems.
Claims (1)
この配合されたＣｕに対してＡｇを２０〜７０％配合し
たメタルボンドを超砥粒と混合して室温で５００〜３０
００ｋｇ／ｃｍ＾２で加圧成形し、その後に５３０〜１
０００℃で焼成することを特徴とするメタルボンド砥石
の製造法。A metal bond containing 10 to 50% by weight of Cu to Co and 20 to 70% of Ag to the blended Cu is mixed with super abrasive grains and polished to 500 to 30% by weight at room temperature.
Pressure molded at 00kg/cm^2, then 530~1
A method for producing a metal bond grindstone characterized by firing at 000°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33026689A JPH03190672A (en) | 1989-12-20 | 1989-12-20 | Manufacture of metal bond grindstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33026689A JPH03190672A (en) | 1989-12-20 | 1989-12-20 | Manufacture of metal bond grindstone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03190672A true JPH03190672A (en) | 1991-08-20 |
Family
ID=18230726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33026689A Pending JPH03190672A (en) | 1989-12-20 | 1989-12-20 | Manufacture of metal bond grindstone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03190672A (en) |
-
1989
- 1989-12-20 JP JP33026689A patent/JPH03190672A/en active Pending
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