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公开(公告)号：US20180236562A1
公开(公告)日：2018-08-23
申请号：US15958701
申请日：2018-04-20
发明人： Kentaro Chihara , Satoru Kukino
IPC分类号： B23B27/14 , C22C29/16 , B23B27/20 , C04B35/583
CPC分类号： B23B27/14 , B23B27/20 , C04B35/583 , C22C29/16
摘要： A sintered body includes cubic boron nitride grains as hard phase grains, and has a thermal conductivity of not less than 15 W·m−1·K−1 and not more than 40 W·m−1·K−1, for cutting a nickel-based heat-resistant alloy formed of crystal grains having a fine grain size represented by a grain size number of more than 5 defined by ASTM standard E112-13. A cutting tool includes this sintered body. Accordingly, the sintered body having both high wear resistance and high fracture resistance, as well as the cutting tool including the sintered body are provided.
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公开(公告)号：US20180215669A1
公开(公告)日：2018-08-02
申请号：US15747200
申请日：2017-01-05
发明人： Kentaro Chihara , Satoru Kukino , Akito Ishii
IPC分类号： C04B35/597 , B23B27/14 , C04B35/584 , C04B35/58
摘要： A sintered material includes a first material and a second material, the first material being partially stabilized ZrO2 having a crystal grain boundary or crystal grain in which 5 to 90 volume % of Al2O3 is dispersed with respect to a whole of the first material, the second material including at least one of SiAlON, silicon nitride and titanium nitride, the sintered material including 1 to 50 volume % of the first material.
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公开(公告)号：US20170341153A1
公开(公告)日：2017-11-30
申请号：US15520948
申请日：2015-10-14
IPC分类号： B23B27/14 , C01B21/082 , C04B35/626 , C04B35/645
CPC分类号： B23B27/14 , C01B21/082 , C04B35/5831 , C04B35/597 , C04B35/626 , C04B35/62836 , C04B35/64 , C04B35/645 , C04B2235/386 , C04B2235/3873
摘要： A sintered body includes a first hard particle, a second hard particle, and a binder. The first hard particle is an M sialon particle having a coating layer. The M sialon particle is represented by MxSi(6−x−z)AlzOzN(8−z) (in the formula, M is a metal containing at least one selected from the group consisting of calcium, strontium, barium, scandium, yttrium, lanthanoid, manganese, iron, cobalt, nickel, copper, and group IV, group V, and group VI elements of the periodic table, and relationships of 0.01≦x≦2, 0.01≦z≦4.2, and 1.79≦(6−x−z)≦5.98 are satisfied). The second hard particle is a cubic boron nitride particle.
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公开(公告)号：US20170173702A1
公开(公告)日：2017-06-22
申请号：US15300115
申请日：2016-02-16
发明人： Kentaro Chihara , Satoru Kukino
IPC分类号： B23B27/14 , C04B35/583 , C22C29/16
CPC分类号： B23B27/14 , B23B27/20 , C04B35/583 , C22C29/16
摘要： A sintered body includes cubic boron nitride grains as hard phase grains, and has a thermal conductivity of not less than 15 W·m−1·K−1 and not more than 40 W·m−1·K−1, for cutting a nickel-based heat-resistant alloy formed of crystal grains having a fine grain size represented by a grain size number of more than 5 defined by ASTM standard E112-13. A cutting tool includes this sintered body. Accordingly, the sintered body having both high wear resistance and high fracture resistance, as well as the cutting tool including the sintered body are provided.
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公开(公告)号：US20160297010A1
公开(公告)日：2016-10-13
申请号：US15036337
申请日：2015-09-11
发明人： Satoru Kukino , Kentaro Chihara , Takashi Harada
CPC分类号： B23B27/145 , B23B2200/0447 , B23B2200/242 , B23B2200/28 , B23B2200/286 , B23B2200/3654 , B23B2222/16 , B23B2226/125 , B23B2226/18 , B24B3/34
摘要： A cutting insert including a surface involved in cutting, for which a cutting tool material of a hard sintered body is used. A radius of a nose R portion is 0.4 mm or greater and 2.4 mm or less, an apex angle α of the nose R portion is 50° or greater and 95° or less, a rake angle β at a position of a bisecting plane of the apex angle of the nose R portion is 1° or greater and 10° or less, a chamfer provided in a cutting edge portion is a negative land with unequal width, and at least on one side of the negative land with respect to a boundary which is an apex of a nose R portion cutting edge, a width of the negative land gradually decreases from the apex of the nose R portion cutting edge to a position at which the nose R portion cutting edge is connected to a linear cutting edge. Let W1 be the width of the negative land at the apex of the nose R portion cutting edge, and W2 be the width of the negative land at both ends of the nose R portion cutting edge, then the W1 is 0.04 mm or greater and 0.2 mm or less, and a ratio of the W1 to the W2 is 1.5 or greater.
摘要翻译： 一种包括切割表面的切削刀片，使用硬质烧结体的切削工具材料。 鼻部R部的半径为0.4mm以上且2.4mm以下，鼻部R部的顶角α为50°以上且95°以下，在等分平面的位置处的前角β 鼻部R部分的顶角为1°以上且10°以下，设在切削刃部的斜面为宽度不等的负极，至少在负极的一侧相对于边界 其是鼻部R部分切割边缘的顶点，负边缘的宽度从鼻部R部分切割边缘的顶点逐渐减小到鼻部R部分切割边缘连接到线性切割边缘的位置。 设W1为鼻部R部切削刃的顶点处的负极的宽度，W2为鼻部R部切削刃的两端的负极的宽度，W1为0.04mm以上且0.2 mm以下，W1与W2的比例为1.5以上。
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公开(公告)号：US10532951B2
公开(公告)日：2020-01-14
申请号：US15747200
申请日：2017-01-05
发明人： Kentaro Chihara , Satoru Kukino , Akito Ishii
IPC分类号： C04B35/119 , C04B35/596 , C04B35/599 , B23B27/14 , C04B35/597 , B23F21/00 , B23G5/06 , C04B35/58 , C04B35/584 , C04B35/587 , C04B35/645 , C04B35/488
摘要： A sintered material includes a first material and a second material, the first material being partially stabilized ZrO2 having a crystal grain boundary or crystal grain in which 5 to 90 volume % of Al2O3 is dispersed with respect to a whole of the first material, the second material including at least one of SiAlON, silicon nitride and titanium nitride, the sintered material including 1 to 50 volume % of the first material.
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公开(公告)号：US10245644B2
公开(公告)日：2019-04-02
申请号：US15036337
申请日：2015-09-11
发明人： Satoru Kukino , Kentaro Chihara , Takashi Harada
摘要： A cutting insert including a surface involved in cutting, for which a cutting tool material of a hard sintered body is used. A radius of a nose R portion is 0.4 mm or greater and 2.4 mm or less, an apex angle α of the nose R portion is 50° or greater and 95° or less, a rake angle β at a position of a bisecting plane of the apex angle of the nose R portion is 1° or greater and 10° or less, a chamfer provided in a cutting edge portion is a negative land with unequal width, and at least on one side of the negative land with respect to a boundary which is an apex of a nose R portion cutting edge, a width of the negative land gradually decreases from the apex of the nose R portion cutting edge to a position at which the nose R portion cutting edge is connected to a linear cutting edge. Let W1 be the width of the negative land at the apex of the nose R portion cutting edge, and W2 be the width of the negative land at both ends of the nose R portion cutting edge, then the W1 is 0.04 mm or greater and 0.2 mm or less, and a ratio of the W1 to the W2 is 1.5 or greater.
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公开(公告)号：US10245643B2
公开(公告)日：2019-04-02
申请号：US15520948
申请日：2015-10-14
IPC分类号： B23B27/14 , C01B21/082 , C04B35/626 , C04B35/64 , C04B35/645 , C04B35/5831 , C04B35/597 , C04B35/628
摘要： A sintered body includes a first hard particle, a second hard particle, and a binder. The first hard particle is an M sialon particle having a coating layer. The M sialon particle is represented by MxSi(6−x−z)AlzOzN(8−z) (in the formula, M is a metal containing at least one selected from the group consisting of calcium, strontium, barium, scandium, yttrium, lanthanoid, manganese, iron, cobalt, nickel, copper, and group IV, group V, and group VI elements of the periodic table, and relationships of 0.01≤x≤2, 0.01≤z≤4.2, and 1.79≤(6−x−z)≤5.98 are satisfied). The second hard particle is a cubic boron nitride particle.
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公开(公告)号：US20180236561A1
公开(公告)日：2018-08-23
申请号：US15958643
申请日：2018-04-20
发明人： Kentaro Chihara , Satoru Kukino
IPC分类号： B23B27/14 , C04B35/583 , C22C29/16
摘要： A sintered body includes cubic boron nitride grains as hard phase grains, and has a thermal conductivity of less than 20 W·m−1·K−1, for cutting a nickel-based heat-resistant alloy formed of crystal grains having a coarse grain size represented by a grain size number of 5 or less defined by ASTM standard E112-13. A cutting tool includes this sintered body. Accordingly, the sintered body having high fracture resistance in addition to high wear resistance, as well as the cutting tool including the sintered body are provided.
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公开(公告)号：US20170173703A1
公开(公告)日：2017-06-22
申请号：US15300155
申请日：2016-02-16
发明人： Kentaro Chihara , Satoru Kukino
IPC分类号： B23B27/14 , C04B35/583 , C22C29/16
摘要： A sintered body includes cubic boron nitride grains as hard phase grains, and has a thermal conductivity of less than 20 W·m−1·K−1, for cutting a nickel-based heat-resistant alloy formed of crystal grains having a coarse grain size represented by a grain size number of 5 or less defined by ASTM standard E112-13. A cutting tool includes this sintered body. Accordingly, the sintered body having high fracture resistance in addition to high wear resistance, as well as the cutting tool including the sintered body are provided.
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