JPS6144632B2 - - Google Patents
Info
- Publication number
- JPS6144632B2 JPS6144632B2 JP52144540A JP14454077A JPS6144632B2 JP S6144632 B2 JPS6144632 B2 JP S6144632B2 JP 52144540 A JP52144540 A JP 52144540A JP 14454077 A JP14454077 A JP 14454077A JP S6144632 B2 JPS6144632 B2 JP S6144632B2
- Authority
- JP
- Japan
- Prior art keywords
- base
- layer
- whetstone
- grindstone
- bonded
- 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.)
- Expired
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000006061 abrasive grain Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Description
【発明の詳細な説明】
本発明は立方晶窒化硼素等の硬質材料を砥粒と
するメタルボンド砥石に関するもので、砥石層が
ベースに強固に接合された砥石を提供することを
目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal bonded grindstone using a hard material such as cubic boron nitride as abrasive grains, and an object thereof is to provide a grindstone in which a grindstone layer is firmly bonded to a base.
従来かゝるメタルボンド砥石は鉄製のベースの
表面に立方晶窒化硼素を砥粒として含有する砥石
層を直接設けており、この砥石の製作において高
温処理を伴うためこの際ベースと砥石層との収縮
量の差が大きくベースから砥石層が剥離する惧れ
があった。 Conventionally, such metal bonded whetstones have a whetstone layer containing cubic boron nitride as abrasive grains placed directly on the surface of an iron base, and because the production of this whetstone involves high-temperature treatment, the bond between the base and the whetstone layer is There was a risk that the grinding wheel layer would peel off from the base due to the large difference in the amount of shrinkage.
本発明は従来のかゝる欠点に鑑みて、鉄製のベ
ースと砥石層との間に線膨張係数が常温において
前記ベースと砥石層の各線膨張係数の略中間の材
料からなる中間層を設けベースと砥石層を強固に
結合することを特微とするものである。 In view of such drawbacks of the conventional art, the present invention provides an intermediate layer between an iron base and a grinding wheel layer made of a material whose linear expansion coefficient is approximately intermediate between the linear expansion coefficients of the base and the grinding wheel layer at room temperature. It is characterized by strongly bonding the grinding wheel layers.
以下本発明の実施例を図面を参照して説明す
る。第１図において鉄製の外径330mm内径324mmの
円形ベース１はカツプ形をなしており中心部に取
付穴２が穿設されている。好ましくは円形ベース
１の中間層の形成面３には細かな凹凸を設ける。 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a circular base 1 made of iron and having an outer diameter of 330 mm and an inner diameter of 324 mm is cup-shaped and has a mounting hole 2 bored in the center. Preferably, the intermediate layer forming surface 3 of the circular base 1 is provided with fine irregularities.
充分洗浄したベース１を基台４上の円形の成形
型５，６中に同心に配置し、このベース１と成形
型５，６との間に形成される環状の空隙内の前記
形成面３上に結合剤を充填し、常温にて面圧700
Kg／cm2で押し型７により型込めして中間層８を形
成する。この中間層８の材料については後述す
る。 The thoroughly cleaned base 1 is placed concentrically in the circular molds 5 and 6 on the base 4, and the forming surface 3 is placed in the annular gap formed between the base 1 and the molds 5 and 6. Fill the top with a binder and achieve a surface pressure of 700 at room temperature.
The intermediate layer 8 is formed by molding with a press die 7 at Kg/cm 2 . The material of this intermediate layer 8 will be described later.
次に前記押し型７を後退させ、前記中間層８上
に砥粒、結合剤よりなる組成物を充填し、常温に
て700Kg／cm2の面圧で押し型７により型込めし砥
石層９を形成する（第２図）。 Next, the pressing mold 7 is retreated, and a composition consisting of abrasive grains and a binder is filled onto the intermediate layer 8, and the grindstone layer 9 is filled with the pressing mold 7 under a surface pressure of 700 kg/cm 2 at room temperature. (Figure 2).
砥石層９の組成としては砥粒として立方晶窒化
硼素或いはダイヤモンドを13重量％（以下同
じ）、また結合剤としては銅43％、錫13％、コバ
ルト28％及び銀３％からなる。 The composition of the grinding wheel layer 9 is that the abrasive grains are cubic boron nitride or diamond at 13% by weight (the same applies hereinafter), and the binders are 43% copper, 13% tin, 28% cobalt, and 3% silver.
続いて上記成形型内に収納された砥石を前記成
形型と共に700℃、面圧350Kg／cm2で約５分間維持
し、前記中間層８及び砥石層９がベース１に対し
て結合した砥石を成型する。 Subsequently, the grindstone housed in the mold was maintained at 700°C and a surface pressure of 350 kg/cm 2 for about 5 minutes together with the mold, and the grindstone with the intermediate layer 8 and the grindstone layer 9 bonded to the base 1 was heated. Mold.
前記中間層８の材料としては鉄44％、銅45％、
クロム５％、錫４％及び残量はニツケルその他の
金属からなる。この中間層８は常温においてその
線膨張係数が17.0×10-6／℃でベース１の線膨張
係数15.5×10-6／℃より大きく且つ砥石層９の線
膨張係数20.3×10-6／℃より小さく両者の略中間
の値を示すものである。 The material of the intermediate layer 8 is 44% iron, 45% copper,
It consists of 5% chromium, 4% tin, and the remainder nickel and other metals. This intermediate layer 8 has a linear expansion coefficient of 17.0×10 -6 /°C at room temperature, which is larger than that of the base 1, which has a linear expansion coefficient of 15.5×10 -6 /°C, and a linear expansion coefficient of 20.3×10 -6 /°C of the grindstone layer 9. This value is smaller and is approximately intermediate between the two.
前記加熱された成形型及び砥石を常温迄冷却す
る場合の温度一収縮曲線は第３図に示すようにな
り、ベース１と砥石層９との収縮量の差が中間層
により約半分となる。 The temperature-shrinkage curve when the heated mold and grindstone are cooled to room temperature is as shown in FIG. 3, and the difference in shrinkage between the base 1 and the grindstone layer 9 is approximately halved by the intermediate layer.
尚前記砥石層９及び中間層８内の銅、錫は前記
加熱において合金化される。 Note that the copper and tin in the grindstone layer 9 and the intermediate layer 8 are alloyed during the heating.
以上のようにしてベース１と砥石層９（厚さ３
〜3.5mm）との間に厚さ２〜2.5mmの金属製の中間
層８を有するメタルボンド砥石が製造される。 As described above, base 1 and grinding wheel layer 9 (thickness 3
A metal-bonded grinding wheel is produced which has a metal intermediate layer 8 with a thickness of 2 to 2.5 mm between the two layers (~3.5 mm).
本発明によるメタルボンド砥石は
イ ベースと砥石層との間に介在し両者の収縮量
の差を減少させる中間層により砥石層が剥離し
ない。 In the metal bonded grindstone according to the present invention, the grindstone layer does not peel off due to the intermediate layer that is interposed between the base and the grindstone layer and reduces the difference in the amount of shrinkage between the two.
ロ 砥石層は結合剤のメタルボンドによって同質
もしくはほぼ同質の中間層に強固に一体化さ
れ、中間層は他の充填物を含んでいないため異
質の鉄製ベースとの接触面積が広く、このベー
スとの結合力が大きい。従って中間層の介在に
よってベースに対する砥石層の保持力が大き
い。(b) The grinding wheel layer is firmly integrated with the homogeneous or almost homogeneous intermediate layer by the metal bond of the binder, and since the intermediate layer does not contain other fillers, it has a wide contact area with the dissimilar iron base, and this base has a large binding force. Therefore, the holding force of the grindstone layer to the base is large due to the presence of the intermediate layer.
ハ 砥石層がなくなるまで使用しても、中間層の
存在によりベースの損傷がないのでベースの再
生利用ができる。C. Even if the grindstone layer is used until the grindstone layer is used up, the base will not be damaged due to the presence of the intermediate layer, so the base can be recycled.
等の効果がある。There are other effects.
尚、第４図はデイスク形ベース１１の外周に中
間層１８を介して砥石層１９を形成した砥石を示
し、これにおいても前記と同様な作用効果を達成
できる。 Incidentally, FIG. 4 shows a grindstone in which a grindstone layer 19 is formed on the outer periphery of a disk-shaped base 11 via an intermediate layer 18, and the same effects as described above can also be achieved in this case.
第１図から第３図は本発明の一実施例を示し、
第１図はカツプ形砥石の断面図、第２図は砥石の
成形工程の説明図、第３図は砥石の温度一収縮量
線図、第４図は本発明の他の実施例を示すもので
ある。
１，１１…ベース、５，６…成形型、７…押し
型、８，１８…中間層、９，１９…砥石層。
1 to 3 show an embodiment of the present invention,
Fig. 1 is a cross-sectional view of a cup-shaped grindstone, Fig. 2 is an explanatory diagram of the forming process of the grindstone, Fig. 3 is a temperature-shrinkage graph of the grindstone, and Fig. 4 shows another embodiment of the present invention. It is. 1, 11... Base, 5, 6... Molding die, 7... Pressing die, 8, 18... Intermediate layer, 9, 19... Grindstone layer.
Claims (1)
ダイヤモンド砥粒が銅を母材とした金属結合剤で
焼結結合された砥石層を形成してなるメタルボン
ド砥石において、前記ベースと砥石層の間には少
くとも鉄、銅、錫とを含み常温における線膨張係
数が前記ベースの線膨張係数より大きく、且前記
砥石層の線膨張係数より小さく両者の略中間の値
を示す中間層を介在せしめて加熱加圧下において
前記ベースと砥石と砥石層とを一体的に焼結結合
したことを特微とするメタルボンド砥石。1. In a metal bonded whetstone formed by forming a whetstone layer on the surface of an iron base, in which cubic boron nitride or diamond abrasive grains are sintered and bonded with a metal binder having a copper base material, between the base and the whetstone layer. interposes an intermediate layer containing at least iron, copper, and tin and having a coefficient of linear expansion at room temperature larger than that of the base, and smaller than that of the grinding wheel layer and approximately halfway between the two. A metal bonded whetstone characterized in that the base, the whetstone, and the whetstone layer are integrally sintered and bonded under heat and pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14454077A JPS5477391A (en) | 1977-11-30 | 1977-11-30 | Metal bond grindstone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14454077A JPS5477391A (en) | 1977-11-30 | 1977-11-30 | Metal bond grindstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5477391A JPS5477391A (en) | 1979-06-20 |
| JPS6144632B2 true JPS6144632B2 (en) | 1986-10-03 |
Family
ID=15364673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14454077A Granted JPS5477391A (en) | 1977-11-30 | 1977-11-30 | Metal bond grindstone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5477391A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2895503B2 (en) * | 1989-03-27 | 1999-05-24 | ノリタケダイヤ株式会社 | Manufacturing method of superabrasive wheel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2223063A (en) * | 1937-10-07 | 1940-11-26 | Carborundum Co | Abrasive article |
| US3369879A (en) * | 1964-11-19 | 1968-02-20 | Super Cut | Method of making a peripheral diamond grinding wheel |
| JPS4941207A (en) * | 1972-07-24 | 1974-04-18 |
-
1977
- 1977-11-30 JP JP14454077A patent/JPS5477391A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2223063A (en) * | 1937-10-07 | 1940-11-26 | Carborundum Co | Abrasive article |
| US3369879A (en) * | 1964-11-19 | 1968-02-20 | Super Cut | Method of making a peripheral diamond grinding wheel |
| JPS4941207A (en) * | 1972-07-24 | 1974-04-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5477391A (en) | 1979-06-20 |
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