IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0000567
(1987-01-05)
|
| 우선권정보 |
JP-0000858 (1986-01-06) |
|
발명자
/ 주소 |
- Nakai Tetsuo (Itami JPX) Goto Mitsuhiro (Itami JPX)
|
| 출원인 / 주소 |
- Sumitomo Electric Industries, Ltd. (Osaka JPX 03)
|
| 인용정보 |
피인용 횟수 :
10 인용 특허 :
8 |
초록
▼
A cBN sintered compact for an end mill obtained by sintering mixed powder prepared by mixing about 35 to 50 percent by volume of cubic boron nitride powder smaller than about 2 mz, Ti(C,N)z, TiCz, (Ti,M)Cz, (Ti,M) (C,N)z and (Ti,M)Nz (where M indicates a transition metal element of the group IVa, Va
A cBN sintered compact for an end mill obtained by sintering mixed powder prepared by mixing about 35 to 50 percent by volume of cubic boron nitride powder smaller than about 2 mz, Ti(C,N)z, TiCz, (Ti,M)Cz, (Ti,M) (C,N)z and (Ti,M)Nz (where M indicates a transition metal element of the group IVa, Va or VIa of the periodic table excepting Ti and z is within a range of about 0.7≤z≤about 0.85) and the atomic ratio of Ti contained in the binder to the transition metal element of the group IVa, Va or VIa of the periodic table excepting Ti is about ⅔to 97/100 while the total tungsten concentration of tungsten contained in the form of at least one of tungsten carbide or the Ti compound described above in the binder is about 5 to 20 percent by weight.
대표청구항
▼
A cBN sintered compact for an end mill obtained by sintering mixed powder containing about 35 to 50 percent by volume of cubic boron nitride powder smaller than 2 m20 to 30 percent by weight of Al and one or more Ti compounds selected from a group of TiNz, Ti(C,N)z, TiCz, (Ti,M)Cz, (Ti,M)(C,N)z and
A cBN sintered compact for an end mill obtained by sintering mixed powder containing about 35 to 50 percent by volume of cubic boron nitride powder smaller than 2 m20 to 30 percent by weight of Al and one or more Ti compounds selected from a group of TiNz, Ti(C,N)z, TiCz, (Ti,M)Cz, (Ti,M)(C,N)z and (Ti,M)Nz (where M indicates a transition metal element of the group IVa, Va or VIa of the periodic table excepting Ti and z is within a range of 0.7≤z≤0.85), the atomic ratio of the content of Ti in said binder to that of said transition metal element of the group IVa, Va or VIa of the periodic table excepting Ti being about ⅔to 97/100 further containing tungsten in the form of at least one of said Ti compound and WC, and the total tungsten concentration in the binder being about 5 to 20 percent by weight.
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