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1. 发明申请

WO1991009698A1 THROW-AWAY DRILL 审中-公开
标题翻译：钻孔钻孔
公开(公告)号：WO1991009698A1
公开(公告)日：1991-07-11
申请号：PCT/JP1990001670
申请日：1990-12-21
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , NOGUCHI, Kazuo , MORI, Yoshikatsu , KITAGAWA, Nobuyuki , NOMURA, Toshio , ISOBE, Kazutaka
发明人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
IPC分类号： B23B51/00
CPC分类号： B23B51/0009 , B23B27/141 , B23B51/02 , B23B51/048 , B23B2200/081 , B23B2205/02 , B23B2251/02 , B23B2251/48 , B23B2251/50 , Y10S408/713 , Y10S408/714 , Y10T407/27 , Y10T408/78 , Y10T408/901
摘要： A throw-away drill which includes a cutting edge portion (31) for cutting a work and a shank portion for fitting to a predetermined position of a cutting tool, and in which the cutting edge portion is detachably and mechanically coupled to the shank portion (32). The cutting edge portion (31) and the shank portion (32) have complementary fitting portions and slits are formed in either one of the cutting edge portion (31) and the shank portion (32). When the cutting edge portion (31) and the shank portion (32) are fitted to each other, the opposed surfaces to these slits (34, 39) move away from each other and undergo elastic deformation, so that the resulting elastic force fixes the cutting edge portion (31) to the shank portion (32). Accordingly, screwing or the like is not necessary and the cutting edge portion (31) and the shank portion (32) can be coupled by mere press-in operation. Accordingly, working efficiency can be improved during the assembly process. A surface coated ultra-hard alloy is used as the material of the cutting edge portion (31), and steel as the material of the shank portion (32). Therefore, the cutting edge is excellent in wear resistance, adhesion resistance and heat crack resistance and the shank portion (32) a relatively low-coat throw-away drill.

2. 发明申请

WO1990010090A1 NITROGEN-CONTAINING CERMET 审中-公开
标题翻译：含氮的CERMET
公开(公告)号：WO1990010090A1
公开(公告)日：1990-09-07
申请号：PCT/JP1990000200
申请日：1990-02-21
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , ISOBE, Kazutaka , NOMURA, Toshio
发明人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
IPC分类号： C22C29/02
CPC分类号： B23B51/00 , C22C29/02 , C22C29/04 , Y10S76/11 , Y10T407/27 , Y10T408/78 , Y10T428/12049 , Y10T428/12063 , Y10T428/12111
摘要： A cermet drill consisting of cermet composed of a hard dispersed phase and a combined metal phase is disclosed. The hard dispersed phase contains a titanium-containing metal atom group and a nitrogen-containing nonmetal atom group. The quantity of the titanium in the metal atom group ranges from 0.5 to 0.95 (both inclusive, the same applies hereinbelow) in terms of an atomic ratio. The quantity of the nitrogen in the nonmetal atom group ranges from 0.1 to 0.7 in terms of atomic ratio. The hard dispersed phase has a minute particle group of an average particle diameter of from 0.2 to 0.6 νm and a coarse particle group of an average particle diameter of from 1 to 3 νm. The volume ratio of the minute particle group to the coarse particle group ranges from 0.3 to 3. The weight percentage of the combined metal phase in the cermet ranges from 5 to 30. This cermet drill exhibits a high abrasion resistance, a high tenacity and a high thermal cracking resistance.

3. 发明申请

WO1994018351A1 NITROGEN-CONTAINING HARD SINTERED ALLOY 审中-公开
标题翻译：含氮硬质合金
公开(公告)号：WO1994018351A1
公开(公告)日：1994-08-18
申请号：PCT/JP1994000158
申请日：1994-02-03
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. , ISOBE, Kazutaka , TSUDA, Keiichi , KITAGAWA, Nobuyuki , NOMURA, Toshio
发明人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
IPC分类号： C22C29/02
CPC分类号： C22C29/02 , B22F2998/00 , C22C29/04 , B22F2207/01 , B22F2207/03
摘要： A nitrogen-containing hard sintered alloy having high thermal impact resistance, abrasion resistance and tenacity and suitably used as a material for cutting tools. This alloy is formed so that it consists of a hard phase composed of a carbide of at least two kinds of transition metals selected from the 4a, 5a and 6a groups on the periodic table, and a combined phase of Ni and Co, in which a maximum combined metal phase quantity portion exists in a range of depth from an outer surface of not less than 3 mu m and not more than 500 mu m. Regarding the hard phase, in which TixWyMc represents the metal composition forming the same phase, x &cir& _ of a surface portion is not less than 1.01 times as large as an average value x &cir& _ of those of the alloy, y &cir& _ of the same portion being not less than 0.1 and not more than 0.9 times as large as an average value y &cir& _ of those of the alloy, x &cir& _ and y &cir& _ of the hard phase returning to average values x &cir& _ and y &cir& _ of those of the alloy as a whole before a depth of 800 mu m is reached, the surface portion not containing WC particles at all, or containing, if any, not more than 0.1 volume % of WC particles, compressive residual stress of not lower than 40 kg/mm being applied to the portion of an NaCl type hard phase which is in the vicinity of an outer surface thereof.
摘要翻译：具有高耐热冲击性，耐磨性和强度的含氮硬质烧结合金，适用于切削工具的材料。该合金形成为由包含选自元素周期表中的4a，5a和6a族中的至少两种过渡金属的碳化物构成的硬质相和Ni和Co的组合相，其中，最大组合金属相量部分存在于从不小于3μm至不小于500μm的外表面的深度范围内。关于硬质相，其中TixWyMc表示形成相同相的金属组成，表面部分的x'和x'不小于合金的平均值x＆cir的＆gt;的1.01倍相同部分不低于合金的平均值y＆cir的0.1并且不大于0.9倍，硬相的x＆cir和_和y＆cir＆_返回平均值x＆cir＆_和y＆cir＆在达到800μm深度之前的合金整体上，完全不含有WC颗粒的表面部分，或者含有不大于0.1体积％的WC颗粒，压缩残余应力不低于比其外表面附近的NaCl型硬质相的部分施加40kg / mm 2以上。

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