JPH0635637B2 - Diamond composite high speed tool steel sintered body and its manufacturing method - Google Patents
Diamond composite high speed tool steel sintered body and its manufacturing methodInfo
- Publication number
- JPH0635637B2 JPH0635637B2 JP18450089A JP18450089A JPH0635637B2 JP H0635637 B2 JPH0635637 B2 JP H0635637B2 JP 18450089 A JP18450089 A JP 18450089A JP 18450089 A JP18450089 A JP 18450089A JP H0635637 B2 JPH0635637 B2 JP H0635637B2
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- powder
- tool steel
- speed tool
- weight
- diamond
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明の製造法によって製造したダイヤモンド複合高速
度工具鋼焼結体は、従来利用されている高速度工具鋼お
よび粉末焼結高速度工具鋼と同じ分野において利用され
る工具材である。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The diamond composite high speed tool steel sintered body manufactured by the manufacturing method of the present invention is a conventionally used high speed tool steel and powder sintered high speed tool steel. It is a tool material used in the same field as.
従来製造されている高速度工具鋼について説明すれば、
通常の高速度工具鋼（SKH−10）は、タングステンが１
２重量％とクロムが４重量％とバナジウムが５重量％と
コバルトが５重量％と炭素が１５重量％と鉄が７２．５
重量％との割合を成すようにフエロタングステンとフエ
ロクロムとフエロバナジウムとコバルトと炭素と鉄とを
混合した混合物を電気炉にて溶融して鋼塊をつくり、其
の鋼塊を鍛造して高速度工具鋼材を生成する。粉末焼結
高速度工具鋼は、以上に説明した高速度工具鋼の溶湯を
高圧水の噴射により微粉化して生成した高速度工具鋼粉
末を加圧加熱して粉末焼結高速度工具鋼材を生成するも
のである。Explaining the conventionally produced high speed tool steel,
Normal high speed tool steel (SKH-10) has 1 tungsten
2% by weight, 4% by weight chromium, 5% by weight vanadium, 5% by weight cobalt, 15% by weight carbon and 72.5% iron.
A mixture of ferrotungsten, ferrochrome, ferrovanadium, cobalt, carbon and iron is melted in an electric furnace to form a steel ingot so as to form a ratio with the weight%, and the steel ingot is forged. Produces high speed tool steel. The powder-sintered high-speed tool steel is a high-speed tool steel powder produced by atomizing the molten metal of the high-speed tool steel described above by jetting high-pressure water to heat the powder to produce powder-sintered high-speed tool steel. To do.
従来の技術で製造されている高速度工具鋼および粉末焼
結高速度工具鋼における硬度は鋼としての硬度の域を越
えることができないので、切削作業を行う場合に被切削
材の種類範囲が制約されることが問題点である。Since the hardness of high-speed tool steel and powder-sintered high-speed tool steel manufactured by conventional technology cannot exceed the hardness range of steel, the range of types of materials to be cut is restricted when performing cutting work. Is a problem.
前項にて説明したように、従来製造されている高速度工
具鋼および粉末焼結高速度工具鋼は製造原価は安いが硬
度が切削用工具材として不充分であることが問題点とな
っている。其の問題点である硬度の不充分さを解決する
手段として、粉末焼結高速度工具鋼を製造する高速度工
具鋼粉末に硬度が極めて高いダイヤモンドの粉末を混合
した混合粉末を用いて硬度の高いダイヤモンド複合高速
度工具鋼を実現しようとするものである。As explained in the previous section, the conventionally produced high-speed tool steel and powder-sintered high-speed tool steel are low in manufacturing cost, but their hardness is insufficient as a cutting tool material. . As a means for solving the problem of insufficient hardness, which is the problem, a high-speed tool steel powder for producing powder-sintered high-speed tool steel is mixed with a diamond powder of extremely high hardness It is intended to realize a high diamond composite high speed tool steel.
以上に説明したように、本発明の製造法によって製造す
るダイヤモンド複合高速工具鋼焼結体に関する作用の説
明は、始めに特許請求の範囲(1)(3)に関する作用につい
て説明する。高速度工具鋼粉末を５０重量％乃至９０重
量％と、ダイヤモンド粉末を３０重量％乃至５重量％
と、ダイヤモンド結晶が常圧下で安定である１，１５０
℃以下の溶融温度を有しているニッケル系合金粉末また
はコバルト系合金粉末を２０重量％乃至５重量％と、の
割合範囲内より選定した割合にて混合した混合粉末を焼
結用原料とし、斯様に配合した焼結用原料を０．５ton
／cm2以上の圧力にて加圧成形すると共に９００℃乃至
１，１５０℃の範囲内より選定した温度にて加熱焼成し
て焼結体を生成する焼結作業において、焼結用原料をピ
ストンシリンダ型のホットプレス装置にて０．５ton ／
cm2乃至１０ton ／cm2の範囲内より選定した圧力にて加
圧成形すると同時に900℃乃至1,150℃の範囲内より選定
した温度に加熱焼成して焼結体を生成するか、または焼
結用原料を通常のプレス装置にて０．５ton ／cm2乃至
１０ton ／cm2の範囲内より選定した圧力にて加圧成形
し、其の成形体を真空炉にて８００℃乃至１，０００℃
の範囲内より選定した温度にて真空焼結して予備焼結体
を生成し、其の予備焼結体を熱間静水圧プレス装置にて
０．５ton ／cm2乃至２ton ／cm2の範囲内より選定した
圧力にて加圧成形すると同時に900℃乃至1,150℃の範囲
内より選定した温度にて加熱焼成して焼結体を生成し、
其の加圧加熱作業において、溶融したニッケル系合金ま
たはコバルト系合金が、高速度工具鋼粒子の多数個とダ
イヤモンド粒子の多数個との混合物における個々の粒子
に液相焼結して液相焼結体を生成し、次いで、生成した
液相焼結体に加えていた圧力は保持したままで加熱のみ
を停止し、更に外部より冷却して固相焼結体を生成し、
次いで、保持していた圧力を常圧にもどして安定した複
合焼結組織体を構成しているダイヤモンド複合高速度工
具鋼焼結体を生成する。次いで、特許請求の範囲(2)(4)
に関する作用について説明する。高速度工具鋼粉末を５
０重量％乃至９０重量％と、ダイヤモンド粉末を２０重
量％乃至５重量％と、硬質炭化物・硬質硼化物・硬質窒
化物・硬質珪化物・硬質酸化物のうちより選択した硬質
物の粉末を１０重量％乃至２重量％と、ダイヤモンド結
晶が常圧下で安定である１，１５０℃以下の低い溶融温
度を有しているニッケル系合金粉末またはコバルト系合
金粉末を２０重量％乃至３重量％と、の割合範囲内より
選定した割合にて混合した混合粉末を焼結用原料とし、
斯様に配合した焼結用原料を０．５tan ／cm2以上の圧
力にて加圧成形すると共に900℃乃至1,150℃の範囲内よ
り選定した温度にて加熱焼成して焼結体を生成する焼結
作業は特許請求の範囲(1)(3)の場合と同様な焼結作業を
行って焼結体を生成し、其の焼結体を生成する加圧加熱
作業において、溶融したニッケル系合金または溶融した
コバルト系合金が、高速度工具鋼粒子の多数個とダイヤ
モンド粒子の多数個と硬質物粒子の多数個との混合物に
おける個々の粒子に液相焼結を行って液相焼結体を生成
し、次いで、生成した液相焼結体に加えていた圧力を保
持したままでの加熱のみを停止し、更に外部より冷却し
て固相焼結体を生成し、次いで、保持した圧力を常圧に
もどして、安定した複合焼結組織体を構成しているダイ
ヤモンド複合高速工具鋼焼結体を生成する。As described above, in the description of the operation of the diamond composite high-speed tool steel sintered body produced by the production method of the present invention, the operation relating to claims (1) and (3) will be described first. 50% to 90% by weight of high speed tool steel powder and 30% to 5% by weight of diamond powder
And the diamond crystals are stable under normal pressure 1,150
Nickel-based alloy powder or cobalt-based alloy powder having a melting temperature of ℃ or less, 20 wt% to 5 wt%, mixed powder in a ratio selected from the ratio range, as a sintering raw material, 0.5 ton of sintering raw material blended in this way
Piston and firing at selected temperatures from the range of 900 ° C. to 1,150 ° C. in a sintering operation to produce a sintered body, raw material for sintering together / cm 2 or more to pressure forming at a pressure Cylinder type hot press machine 0.5ton /
cm 2 or by heating baking temperature selected from the range of 10ton / cm at the selected pressure from within the second range pressure molding at the same time 900 ° C. to 1,150 ° C. or produce a sintered body, or for sintering The raw material is pressure-molded with a normal press machine at a pressure selected from the range of 0.5 ton / cm 2 to 10 ton / cm 2 , and the molded body is 800 ° C to 1,000 ° C in a vacuum furnace.
Range at the selected temperature from within by vacuum sintering to produce a preliminary sintered body, the pre-sintered body by hot isostatic pressing apparatus of 0.5 ton / cm 2 to 2 ton / cm 2 of At the same time pressure molding at a pressure selected from the inside, at the same time heating and firing at a temperature selected from the range of 900 ℃ ~ 1,150 ℃ to produce a sintered body,
In the pressurizing and heating operation, the molten nickel-based alloy or cobalt-based alloy is liquid-phase-sintered into individual particles in a mixture of a large number of high-speed tool steel particles and a large number of diamond particles by liquid-phase sintering. Then, a solid body is formed, and then only the heating is stopped while the pressure applied to the formed liquid phase sintered body is maintained, and further, it is cooled from the outside to form a solid phase sintered body.
Then, the retained pressure is returned to normal pressure to produce a diamond composite high speed tool steel sintered body that constitutes a stable composite sintered structure. Then, claims (2) (4)
The action regarding will be described. High speed tool steel powder 5
0% to 90% by weight, 20% to 5% by weight of diamond powder, and 10% of powder of hard material selected from hard carbide, hard boride, hard nitride, hard silicide, and hard oxide. % By weight to 2% by weight, and 20% by weight to 3% by weight of nickel-based alloy powder or cobalt-based alloy powder having a low melting temperature of 1,150 ° C. or lower at which diamond crystals are stable under normal pressure. The mixed powder mixed in the ratio selected from the ratio range of
The sintering raw material thus blended is pressure-molded at a pressure of 0.5 tan / cm 2 or more and heated and sintered at a temperature selected from the range of 900 ° C to 1,150 ° C to produce a sintered body. Sintering work is the same as in claims (1) and (3) to produce a sintered body, and in the pressure heating work to produce the sintered body, molten nickel-based Alloy or molten cobalt-based alloy is a liquid phase sintered body obtained by performing liquid phase sintering on individual particles in a mixture of a large number of high speed tool steel particles, a large number of diamond particles and a large number of hard material particles. Then, only heating while maintaining the pressure applied to the generated liquid phase sintered body was stopped, further cooling from the outside to generate a solid phase sintered body, and then the held pressure Return to normal pressure to form a stable composite sintered structure body Create a union.
以上に説明した作業においてダイヤモンド粒子に加える
加熱温度を1,150℃以下としたことは、ダイヤモンド結
晶のグラフアイト結晶への転移は1,150℃以下の温度の
もとでは、常圧下においても工業的精度にては行われな
いと認められていることによるものである。尚、本発明
においては、ダイヤモンド粉末を複合させる母材として
高速度工具鋼粉末を使用しているが、其のダイヤモンド
粉末を複合する母材とした高速度工具鋼粉末の代りにタ
ングステン工具鋼、炭素工具鋼等の工具鋼の粉末を使用
した場合においても、高速度工具鋼粉末を使用した場合
と類似したダイヤモンド複合工具鋼焼結体を得ることが
できる。The heating temperature applied to the diamond particles in the work described above was set to 1,150 ° C or lower, which means that the transition of the diamond crystal to the graphite crystal is 1,150 ° C or lower under the industrial precision even under normal pressure. Is due to what is acknowledged not to take place. In the present invention, the high speed tool steel powder is used as a base material for compounding diamond powder, but a tungsten tool steel is used instead of the high speed tool steel powder as a base material for compounding the diamond powder, Even when a tool steel powder such as carbon tool steel is used, a diamond composite tool steel sintered body similar to that when a high speed tool steel powder is used can be obtained.
実施例 １． 高速度工具鋼（SKH−９）を粉末を６５重量％と、ダイ
ヤモンド（粒径10ミクロン）粉末を20重量％と、溶融温
度が９９０℃であってニッケル含有割合が９０．６重量
％であるニッケル系合金（ニッケル−硼素−シリコン−
鉄−炭素）粉末（福田金属箔粉社製）を１５重量％と、
の割合に混合した混合粉末を焼結用原料とした。斯様に
配合した焼結用原料をピストンシリンダ型のホットプレ
ス装置を用いて１ton ／cm2の圧力にて加圧成形すると
同時に１，１３０℃の温度にて加熱焼結して焼結体を生
成し、次いで、加えていた圧力は保持したままで加熱の
みを停止し、外部より冷却して焼結体の温度が３００℃
にまで降温した後に保持していた圧力を常圧にもどして
生成した焼結体を取り出した。得た焼結体は、高速度工
具鋼粒子の多数個とダイヤモンド粒子の多数個との混合
体における個々の粒子に溶融ニッケル系合金が液相焼結
して複合焼結組織体を生成しているダイヤモンド複合高
速度工具鋼焼結体であった。Example 1. High-speed tool steel (SKH-9) powder 65 wt%, diamond (particle size 10 micron) powder 20 wt%, melting temperature 990 ℃, nickel content 90.6 wt% Nickel alloy (nickel-boron-silicon-
15% by weight of iron-carbon) powder (manufactured by Fukuda Metal Foil Powder Co., Ltd.),
The mixed powder mixed in the ratio was used as a raw material for sintering. The sintering raw material thus blended is pressure-molded at a pressure of 1 ton / cm 2 using a piston-cylinder type hot press machine, and at the same time, it is heated and sintered at a temperature of 1,130 ° C. to obtain a sintered body. Generated, then stopped heating only while maintaining the applied pressure, and cooled from the outside to keep the temperature of the sintered body at 300 ° C.
After the temperature was lowered to 1, the pressure held was returned to normal pressure, and the produced sintered body was taken out. The obtained sintered body is a composite sintered structure produced by liquid phase sintering of molten nickel-based alloy into individual particles in a mixture of a large number of high speed tool steel particles and a large number of diamond particles. It was a diamond composite high speed tool steel sintered body.
実施例 ２． 高速度工具鋼（SKH−57）粉末を６０重量％と、ダイヤ
モンド（粒径10ミクロン）粉末を10重量％と、炭化タン
グステン粉末を１５重量％と、溶融温度が９９５℃であ
つてニッケル含有割合が９３．３重量％であるニッケル
系合金（ニッケル−硼素−シリコン−鉄−炭素）粉末
（福田金属箔粉社製）を１５重量％と、の割合にて混合
した混合粉末を焼結用原料とした。斯様に配合した焼結
用原料を、加圧プレス装置を用いて７ton ／cm2の圧力
にて加圧成形し、次いで真空炉を用いて９００℃の温度
にて加熱して予備焼結体を生成し、次いで予備焼結体を
缶封入して熱間静水圧プレス装置を用いて１．２ton ／
cm2の圧力にて加圧すると同時に１，１３０℃の温度に
て加熱して焼結体を生成した。次いで、加えていた圧力
は保持したままで、加熱のみを停止し、冷却して、焼結
体の温度が３００℃にまで降温した後に保持していた圧
力を常圧にもどして生成した焼結体を取り出した。得た
焼結体は、高速度工具鋼粒子の多数個とダイヤモンド粒
子の多数個と炭化タングステン粒子の多数個との混合体
における個々の粒子に溶融ニッケル系合金が液相焼結し
て複合焼結組織体を生成しているダイヤモンド複合高速
度工具鋼焼結体であった。Example 2. 60% by weight of high speed tool steel (SKH-57) powder, 10% by weight of diamond (particle size 10 micron) powder, 15% by weight of tungsten carbide powder, and a melting temperature of 995 ° C and a nickel content ratio. 15% by weight of a nickel-based alloy (nickel-boron-silicon-iron-carbon) powder (manufactured by Fukuda Metal Foil & Powder Co., Ltd.) whose content is 93.3% by weight. And The sintering raw material thus blended is pressure-molded at a pressure of 7 ton / cm 2 using a pressure press machine, and then heated at a temperature of 900 ° C. in a vacuum furnace to obtain a pre-sintered body. And then the pre-sintered body was enclosed in a can and heated to 1.2 ton /
The pressure was applied at a pressure of cm 2 , and at the same time, the temperature at 1,130 ° C. was applied to produce a sintered body. Then, while maintaining the applied pressure, only heating is stopped, the temperature of the sintered body is cooled, the pressure of the sintered body is returned to normal pressure, and then the sintering is performed. I took out my body. The obtained sintered body was a composite fired product in which molten nickel-based alloy was liquid-phase sintered to individual particles in a mixture of a large number of high speed tool steel particles, a large number of diamond particles and a large number of tungsten carbide particles. It was a diamond composite high speed tool steel sinter that had formed texture.
実施例 ３． 高速度工具鋼（SKH−10）粉末を６５重量％と、ダイヤ
モンド（粒径10ミクロン）粉末を20重量％と、溶融温度
が１，１３０℃であってコバルト含有割合が４０．５重
量％であるコバルト系合金（コバルト−クロム−硼素−
シリコン−ニッケル−モリブデン）粉末（福田金属箔粉
社製）を１５重量％と、の割合にて混合した混合粉末を
焼結用原料とした。斯様に配合した焼結用原料をピスト
ンシリンダ型のホットプレス装置を用いて１ton ／cm2
の圧力にて加圧成形すると同時に１，１４０℃の温度に
て加熱焼成して焼結体を生成し、次いで、加えたいた圧
力は保持したままで加熱のみを停止し、外部より冷却し
て、焼結体の温度が３００℃にまで降温した後に保持し
ていた圧力を常圧にもどして生成した焼結体を取り出し
た。得た焼結体は、高速度工具鋼粒子の多数個とダイヤ
モンド粒子の多数個との混合体における個々の粒子に溶
融コバルト系合金が液相焼結して複合焼結組織体を生成
しているダイヤモンド複合高速工具鋼焼結体であった。Example 3. 65% by weight of high speed tool steel (SKH-10) powder, 20% by weight of diamond (10 micron particle size) powder, melting temperature of 1,130 ° C and cobalt content of 40.5% by weight. A cobalt alloy (cobalt-chromium-boron-
Silicon-nickel-molybdenum) powder (manufactured by Fukuda Metal Foil Powder Co., Ltd.) was mixed at a ratio of 15% by weight to obtain a mixed powder as a raw material for sintering. The sintering raw material thus blended was heated to 1 ton / cm 2 using a piston-cylinder type hot press machine.
At the same time as pressure molding at a temperature of 1,140 ° C., it is fired at a temperature of 1,140 ° C. to produce a sintered body, and then only the heating is stopped while the applied pressure is maintained and it is cooled from the outside. After the temperature of the sintered body was lowered to 300 ° C., the pressure held therein was returned to normal pressure, and the produced sintered body was taken out. The obtained sintered body was obtained by forming a composite sintered structure by liquid phase sintering of the molten cobalt-based alloy into individual particles in a mixture of a large number of high speed tool steel particles and a large number of diamond particles. It was a diamond composite high speed tool steel sintered body.
実施例 ４． 高速度工具鋼（SKH−57）粉末を６０重量％と、ダイヤ
モンド（粒径10ミクロン）粉末を10重量％と、炭化タン
グステン粉末を１５重量％と、溶融温度が１，１４０℃
であってコバルト含有割合が６６．３重量％であるコバ
ルト系合金（コバルト−クロム−硼素−シリコン−ニッ
ケル−タングステン）粉末（福田金属箔粉社製）を１５
重量％と、の割合にて混合した混合粉末を焼結用原料と
した。斯様に配合した焼結用原料を、加圧プレス装置を
用いて７ton ／cm2の圧力にて加圧成形し、次いで、真
空炉を用いて９００℃の温度にて加熱して予備焼結体を
生成し、次いで予備焼結体を缶封入して熱間静水圧プレ
ス装置を用いて１．２ton ／cm2の圧力にて加圧すると
同時に1,150℃の温度にて加熱して焼結体を生成した。
次いで加えていた圧力は保持したままで加熱のみを停止
し冷却して、焼結体の温度が３００℃にまで降温した後
に保持していた圧力を常圧にもどして生成した焼結体を
取り出した。得た焼結体は、高速度工具鋼粒子の多数個
とダイヤモンド粒子の多数個と炭化タングステン粒子の
多数個との混合体における個々の粒子に溶融コバルト系
合金が液相焼結して複合焼結組織体を生成しているダイ
ヤモンド複合高速度工具鋼焼結体であった。Example 4. 60% by weight of high speed tool steel (SKH-57) powder, 10% by weight of diamond (10 micron particle size) powder, 15% by weight of tungsten carbide powder and melting temperature of 1,140 ° C.
And a cobalt-based alloy (cobalt-chromium-boron-silicon-nickel-tungsten) powder (manufactured by Fukuda Metal Foil Powder Co., Ltd.) having a cobalt content of 66.3% by weight is used.
The mixed powder mixed with the ratio by weight was used as a raw material for sintering. The sintering raw material thus blended is pressure-molded at a pressure of 7 ton / cm 2 using a pressure press device, and then heated at a temperature of 900 ° C. in a vacuum furnace for pre-sintering. Body, and then the pre-sintered body is enclosed in a can and pressed at a pressure of 1.2 ton / cm 2 using a hot isostatic press and simultaneously heated at a temperature of 1,150 ° C. Was generated.
Then, while keeping the applied pressure, only heating is stopped and cooled, the temperature of the sintered body is lowered to 300 ° C., and then the retained pressure is returned to normal pressure, and the produced sintered body is taken out. It was The obtained sintered body is a composite sintered body in which molten cobalt-based alloy is liquid-phase sintered to individual particles in a mixture of a large number of high speed tool steel particles, a large number of diamond particles and a large number of tungsten carbide particles. It was a diamond composite high speed tool steel sinter that had formed texture.
以上に説明したように、本発明の方法によって製造した
ダイヤモンド複合高速度工具鋼焼結体は、高価な特殊構
造の超高圧高温発生装置を使用することなく、通常構造
のピストンシリンダ型のホットプレス装置、または通常
構造の加圧プレス装置と真空炉と一般用として設けられ
ている熱間静水圧プレス装置とを使用して０．５ton ／
cm2以上の圧力にて加圧成形すると共に９００℃乃至
１，１５０℃の範囲内より選定した温度にて加熱焼成す
る方法によって製造するダイヤモンド複合高速度工具鋼
焼結体であるので、償却費の負担額が安くてすみ、従っ
てダイヤモンド複合高速度工具鋼焼結体の製造原価を安
くする効果が得られる。更に、従来の高速度工具鋼より
も硬度が高く切削能力も高い工具材を得ることができ
る。斯様な理由によって、本発明のダイヤモンド複合高
速工具鋼焼結体は安価でしかも利用分野が広い工具材と
しての効果を奏するものである。As described above, the diamond composite high-speed tool steel sintered body produced by the method of the present invention is a piston-cylinder-type hot press having a normal structure without using an expensive high-pressure high-temperature generator having a special structure. Equipment, or 0.5 ton / min using a conventional pressurizing press device, a vacuum furnace and a hot isostatic pressing device provided for general use
Amortization cost because it is a diamond composite high speed tool steel sintered body produced by the method of pressure forming at a pressure of cm 2 or more and heating and firing at a temperature selected from the range of 900 ° C to 1,150 ° C. Therefore, the cost of manufacturing the diamond composite high speed tool steel sintered body can be reduced. Further, it is possible to obtain a tool material having higher hardness and higher cutting ability than the conventional high speed tool steel. For these reasons, the diamond composite high speed tool steel sintered body of the present invention is inexpensive and has an effect as a tool material having a wide range of applications.
Claims (4)
量％と、ダイヤモンド粉末を３０重量％乃至５重量％
と、溶融温度が１，１５０℃以下であるニッケル系合金
粉末またはコバルト系合金粉末を２０重量％乃至５重量
％と、の割合範囲内より選定した割合にて混合した混合
粉末を０．５ton／cm2以上の圧力にて加圧成形すると共
に９００℃乃至１，１５０℃の範囲内より選定した温度
にて加熱焼成して成る焼結体において、高速度工具鋼粒
子の多数個とダイヤモンド粒子の多数個との混合物にお
ける個々の粒子に溶融ニッケル系合金または溶融コバル
ト系合金が液相焼結して複合焼結組織体を成生すること
を特徴とするダイヤモンド複合高速度工具鋼焼結体。1. High-speed tool steel powder 50 wt% to 90 wt% and diamond powder 30 wt% to 5 wt%
And nickel-based alloy powder or cobalt-based alloy powder having a melting temperature of 1,150 ° C. or lower at 20 wt% to 5 wt% mixed powder at a ratio selected from the range of 0.5 ton / In a sintered body formed by pressure forming at a pressure of cm 2 or more and heating and firing at a temperature selected from the range of 900 ° C. to 1,150 ° C., a large number of high speed tool steel particles and diamond particles A diamond composite high-speed tool steel sintered body, characterized in that molten nickel-based alloy or molten cobalt-based alloy is liquid-phase sintered into individual particles in a mixture with a large number of particles to form a composite sintered structure.
量％と、ダイヤモンド粉末を２０重量％乃至５重量％
と、硬質炭化物・硬質硼化物・硬質窒化物・硬質珪化物
・硬質酸化物のうちより選択した硬質物の粉末を１０重
量％乃至２重量％と、溶融温度が１，１５０℃以下であ
るニッケル系合金粉末またはコバルト系合金粉末を２０
重量％乃至３重量％と、の割合範囲内より選定した割合
にて混合した混合粉末を、０．５ton／cm2以上の圧力に
て加圧成形すると共に９００℃乃至１，１５０℃の範囲
内より選定した温度にて加熱焼成して成る焼結体におい
て、高速度工具鋼粒子の多数個とダイヤモンド粒子の多
数個と硬質物粒子の多数個との混合物における個々の粒
子に溶融ニッケル系合金または溶融コバルト系合金が液
相焼結して複合焼結組織体を成生することを特徴とする
ダイヤモンド複合高速度工具鋼焼結体。2. High-speed tool steel powder 50% to 90% by weight and diamond powder 20% to 5% by weight.
And 10% to 2% by weight of a powder of a hard material selected from hard carbide, hard boride, hard nitride, hard silicide, and hard oxide, and a melting temperature of 1,150 ° C. or lower nickel 20 system alloy powder or cobalt system alloy powder
% To 3% by weight, mixed powders mixed in a ratio selected from the range of 0.5% to 3% by weight, pressure-molded at a pressure of 0.5 ton / cm 2 or more, and within 900 to 1,150 ° C. In a sintered body formed by heating and firing at a more selected temperature, molten nickel-based alloy or individual particles in a mixture of a large number of high speed tool steel particles, a large number of diamond particles and a large number of hard material particles A diamond composite high-speed tool steel sintered body, characterized in that a molten cobalt-based alloy is liquid-phase sintered to form a composite sintered structure.
量％と、ダイヤモンド粉末を３０重量％乃至５重量％
と、溶融温度が１，１５０℃以下であるニッケル系合金
粉末またはコバルト系合金粉末を２０重量％乃至５重量
％と、の割合範囲内より選定した割合にて混合した混合
粉末を、０．５ton／cm2以上の圧力にて加圧成形すると
共に９００℃乃至１，１５０℃の範囲内より選定した温
度にて加熱焼成して、高速度工具鋼粒子の多数個とダイ
ヤモンド粒子の多数個との混合物における個々の粒子に
溶融ニッケル系合金または溶融コバルト系合金が液相焼
結して複合焼結組織体を成生することを特徴とするダイ
ヤモンド複合高速度工具鋼焼結体の製造法。3. High-speed tool steel powder 50% to 90% by weight and diamond powder 30% to 5% by weight.
And 0.5 ton of the mixed powder obtained by mixing the nickel-based alloy powder or the cobalt-based alloy powder having a melting temperature of 1,150 ° C. or less at a ratio selected from the range of 20 wt% to 5 wt%. Of a high speed tool steel particle and a large number of diamond particle by press-molding at a pressure of / cm 2 or more and heating and firing at a temperature selected from the range of 900 ° C to 1,150 ° C. A method for producing a diamond composite high-speed tool steel sintered body, characterized in that molten nickel-based alloy or molten cobalt-based alloy is liquid-phase sintered into individual particles in a mixture to form a composite sintered structure.
量％と、ダイヤモンド粉末を２０重量％乃至５重量％
と、硬質炭化物・硬質硼化物・硬質窒化物・硬質珪化物
・硬質酸化物のうちより選択した硬質物の粉末を１０重
量％乃至５重量％と、溶融温度が１，１５０℃以下であ
るニッケル系合金粉末またはコバルト系合金粉末を２０
重量％乃至５重量％と、の割合範囲内より選定した割合
にて混合した混合粉末を焼結用原料とし、斯様に配合し
て焼結用原料を０．５ton／cm2以上の圧力にて加圧成形
すると共に９００℃乃至１，１５０℃の範囲内より選定
した温度にて加熱焼成して、高速度工具鋼粒子の多数個
と硬質物粒子の多数個とダイヤモンド粒子の多数個との
混合物における個々の粒子に溶融ニッケル系合金または
溶融コバルト系合金が液相焼結して複合焼結組織体を生
成することを特徴とするダイヤモンド複合高速度工具鋼
焼結体の製造法。4. High-speed tool steel powder in an amount of 50% to 85% by weight and diamond powder in an amount of 20% to 5% by weight.
And 10% to 5% by weight of a powder of a hard material selected from hard carbide, hard boride, hard nitride, hard silicide, and hard oxide, and a melting temperature of 1,150 ° C. or lower nickel 20 system alloy powder or cobalt system alloy powder
% To 5% by weight, the mixed powder mixed in a ratio selected from the range of 5% to 5% by weight is used as a sintering raw material, and the sintering raw material is blended in this way to a pressure of 0.5 ton / cm 2 or more. And press-molding and heat-baking at a temperature selected from the range of 900 ° C to 1,150 ° C to obtain a large number of high speed tool steel particles, a large number of hard material particles and a large number of diamond particles. A method for producing a diamond composite high-speed tool steel sintered body, characterized in that molten nickel-based alloy or molten cobalt-based alloy is liquid-phase sintered into individual particles in a mixture to form a composite sintered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450089A JPH0635637B2 (en) | 1989-07-19 | 1989-07-19 | Diamond composite high speed tool steel sintered body and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450089A JPH0635637B2 (en) | 1989-07-19 | 1989-07-19 | Diamond composite high speed tool steel sintered body and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0353039A JPH0353039A (en) | 1991-03-07 |
| JPH0635637B2 true JPH0635637B2 (en) | 1994-05-11 |
Family
ID=16154276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18450089A Expired - Lifetime JPH0635637B2 (en) | 1989-07-19 | 1989-07-19 | Diamond composite high speed tool steel sintered body and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635637B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04371546A (en) * | 1991-06-17 | 1992-12-24 | Tatsuro Kuratomi | Diamond-based sintered body and production thereof |
| JPH05271839A (en) * | 1992-03-24 | 1993-10-19 | Tatsuro Kuratomi | Diamond sintered compact and its production |
| CN107043882B (en) * | 2017-03-17 | 2018-07-24 | 昆明理工大学 | A kind of preparation method of diamond composite |
| CN113333756B (en) * | 2021-06-09 | 2023-07-04 | 铜陵兢强电子科技股份有限公司 | Enamelled diamond die of high-speed large round wire horizontal enamelling machine |
-
1989
- 1989-07-19 JP JP18450089A patent/JPH0635637B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0353039A (en) | 1991-03-07 |
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