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1. 发明专利

JP2011167776A Drill and manufacturing method for the same 有权
标题翻译：钻孔及其制造方法
公开(公告)号：JP2011167776A
公开(公告)日：2011-09-01
申请号：JP2010031681
申请日：2010-02-16
申请人： Sumitomo Electric Hardmetal Corp , 住友電工ハードメタル株式会社
发明人： HAYAKAWA TOMOKO , YAMAMOTO EIJI , KUROKAWA KAZUO , UCHINO KATSUYA
IPC分类号： B23B51/00
摘要： PROBLEM TO BE SOLVED: To provide a drill with a small diameter used for drilling a print substrate or the like and excellent in wear resistance, and also to provide a manufacturing method for the same.
SOLUTION: The drill is made of cemented carbide mainly composed of WC and Co. The drill has a blade diameter D of ≤0.5 mm and includes a Co-reducting layer at least on the surface side of the blade groove of the drill and an inner circumferential part on the inner side. When Co content at the inner circumferential part is Co(i) (mass%) and Co content in the Co-reducing layer is Co(o) (mass%), the ratio of both Co(o)/Co(i) is ≥50% and
摘要翻译：要解决的问题：为了提供用于钻打印基板等的小直径的钻头和耐磨性优良，并且还提供了用于其的制造方法。解决方案：钻头由主要由WC和Co组成的硬质合金制成。钻头的刀片直径D≤0.5mm，并且至少在钻头的刀槽的表面侧上包括Co还原层和内侧的内周部。当内周部的Co含量为Co（i）（质量％），Co还原层中的Co含量为Co（o）（质量％）时，Co（o）/ Co（i） ≥50％和<80％，并且Co还原层的厚度<10μm。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2009035810A Cemented carbide 审中-公开
标题翻译：硬质合金
公开(公告)号：JP2009035810A
公开(公告)日：2009-02-19
申请号：JP2008123926
申请日：2008-05-09
申请人： Hokkaido Sumiden Seimitsu Kk , Sumitomo Electric Hardmetal Corp , 住友電工ハードメタル株式会社 , 北海道住電精密株式会社
发明人： KOYOSHI YUTA , YAMAMOTO EIJI , KUROKAWA KAZUO , UCHINO KATSUYA , KITAGAWA NOBUYUKI , KAWASHIMA MOTOYOSHI , MAKIHARA TOORU , KANAYAMA TATSUYA , MINATO YOSHIHIRO
IPC分类号： C22C29/08 , B23B51/00 , C22C1/05
摘要： PROBLEM TO BE SOLVED: To provide a cemented carbide suitable for tool raw materials and capable of contributing to the reduction of uneven wear and the extension of the life of tools.
SOLUTION: The cemented carbide is formed by bonding between tungsten carbide (WC) particles with a bonding phase mainly composed of cobalt (Co), and the average grain size of the WC particles is 0.1-0.5 μm, and the bonding phase contains 12 mass% or less of Co, excluding 0 mass% of Co. The average thickness of the bonding phase is 0.14 μm or smaller and 3σ
t is 0.2 or less when dispersion of the thicknesses is expressed by 3σ
t by using standard deviation σ
t of the thickness. In the cemented carbide of the invention, the bonding phases (black-colored parts in Fig. 1(I)) exist between micro WC particles (gray-colored parts in the same figure) thinly and evenly, and do not agglomerate micro-wisely and do not exist unevenly. Uneven wear can be suppressed and working superior in positional accuracy can be performed over a long-period of time when the cemented carbide having the microstructure like this is utilized for a micro-drill.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供适合于工具原料的硬质合金，并能够有助于减少不均匀的磨损和延长工具的使用寿命。解决方案：硬质合金通过碳化钨（WC）颗粒与主要由钴（Co）组成的粘结相结合而形成，WC颗粒的平均晶粒尺寸为0.1-0.5μm，结合相含有12质量％以下的Co，不包括Co的0质量％。粘合相的平均厚度为0.14μm以下，3σ t 为0.2以下， 3σ t ，使用厚度的标准偏差σ t 。在本发明的硬质合金中，微观WC颗粒（相同图中的灰色部分）薄均匀地存在粘结相（图1（I）中的黑色部分）），并且不会微观聚集不平均不存在。可以抑制不均匀磨损，并且当具有这样的微结构的硬质合金用于微钻时，可以在长时间内执行位置精度优异的工作。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2013060666A Cemented carbide 有权
标题翻译：硬质合金
公开(公告)号：JP2013060666A
公开(公告)日：2013-04-04
申请号：JP2012246788
申请日：2012-11-08
申请人： Sumitomo Electric Hardmetal Corp , 住友電工ハードメタル株式会社
发明人： KOYOSHI YUTA , YAMAMOTO EIJI , KUROKAWA KAZUO , UCHINO KATSUYA , KITAGAWA NOBUYUKI , KAWASHIMA MOTOYOSHI , MAKIHARA TORU , KANAYAMA TATSUYA , MINATO YOSHIHIRO
IPC分类号： C22C29/08 , B23B27/14 , B23B51/00 , C22C1/05
摘要： PROBLEM TO BE SOLVED: To provide a cemented carbide which is suitable for a tool raw material and achieves reduction in uneven wear of a tool thereby contributing to the extension of the life of the tool.SOLUTION: The cemented carbide is formed by bonding between tungsten carbide (WC) particles with a bonding phase mainly composed of cobalt (Co), and the average grain size of the WC particles is 0.1-0.5 μm, and the bonding phase contains 5 to 12 mass% of Co. The average thickness of the bonding phase is 0.14 μm or smaller. The ratio of the bonding phases each having a thickness of 0.5 μm or more is 0.15% or less of the whole bonding phase. In the cemented carbide, the bonding phases (black-colored parts in Fig.1(I)) exist between micro WC particles (gray-colored parts in the same figure) thinly and evenly, and do not agglomerate micro-wisely and do not exist unevenly. Uneven wear can be suppressed and working superior in positional accuracy can be performed over a long-period of time when the cemented carbide having the microstructure like this is utilized for a micro-drill.
摘要翻译：要解决的问题：提供一种适用于工具原料的硬质合金，并实现工具的不均匀磨损的减少，从而有助于延长工具的使用寿命。解决方案：硬质合金通过碳化钨（WC）颗粒与主要由钴（Co）组成的粘结相结合而形成，WC颗粒的平均晶粒尺寸为0.1-0.5μm，结合相含有5〜12质量％的Co。结合相的平均厚度为0.14μm以下。各自具有0.5μm以上的厚度的接合相的比例为整个接合相的0.15％以下。在硬质合金中，粘结相（图1（I）中的黑色部分））薄微均匀地存在于微WC颗粒（相同图中的灰色部分）之间，并且不会微观地聚集而不是存在不均衡。可以抑制不均匀磨损，并且当具有这样的微结构的硬质合金用于微钻时，可以在长时间内执行位置精度优异的工作。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2011167777A Drill and manufacturing method for the same 有权
标题翻译：钻孔及其制造方法
公开(公告)号：JP2011167777A
公开(公告)日：2011-09-01
申请号：JP2010031682
申请日：2010-02-16
申请人： Sumitomo Electric Hardmetal Corp , 住友電工ハードメタル株式会社
发明人： HAYAKAWA TOMOKO , YAMAMOTO EIJI , KUROKAWA KAZUO , UCHINO KATSUYA
IPC分类号： B23B51/00
摘要： PROBLEM TO BE SOLVED: To provide a drill with a small diameter used for drilling a print substrate or the like and excellent in fracture resistance, and also to provide a manufacturing method for the same.
SOLUTION: The drill is made of cemented carbide mainly composed of WC and Co. The drill has a blade diameter D of ≤0.5 mm and includes a Co-reducing layer at least on the surface side of the blade groove of the drill and an circumferential part on the inner side. When Co content at the inner circumferential part is Co(i) (mass%) and Co content in the Co-reducing layer is Co(o) (mass%), the ratio of both Co(o)/Co(i) is ≥80% and ≤95% and the thickness of the Co-reducing layer is
摘要翻译：要解决的问题：提供一种用于钻孔印刷基板等的小直径的钻头，并且具有优异的耐断裂性，并且还提供其制造方法。解决方案：钻头由主要由WC和Co组成的硬质合金制成。钻头的刀片直径D≤0.5mm，并且至少在钻头的刀槽的表面侧包括Co还原层和在内侧的周向部分。当内周部的Co含量为Co（i）（质量％），Co还原层中的Co含量为Co（o）（质量％）时，Co（o）/ Co（i） ≥80％，≤95％，Co还原层的厚度<10μm。版权所有（C）2011，JPO＆INPIT

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