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11. 发明专利

JPH0889915A WASHING METHOD OF SCREEN 失效
公开(公告)号：JPH0889915A
公开(公告)日：1996-04-09
申请号：JP25624294
申请日：1994-09-26
申请人： HOKKAIDO SUMIDEN SEIMITSU KK , SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAYAMA TATSUYA , NAKAYAMA AKIRA , MARUYAMA MASAO , MATSUMOTO HIDEKAZU , SAKAMOTO HIDEAKI
IPC分类号： B08B3/12
摘要： PURPOSE: To clean a screen without impairing safety by applying ultrasonic waves having specified frequency and power density to a screen for separating powder which is immersed in liquid. CONSTITUTION: In case a screen of which a screen net and its supporting frame are integrally formed and for separating powder or the like including powder of power density are applied to the screen which is immersed in liquid. At this time, time for applying the ultrasonic waves is 1-15min., and the liquid is water or organic solvent at about 15-30 deg.C. Further, the powder is the one containing powder of sintered hard alloy or ceramics or the like. On the other hand, the mesh opening of the screen net is

12. 发明专利

JPH0873903A PRODUCTION OF HARD ALLOY 失效
公开(公告)号：JPH0873903A
公开(公告)日：1996-03-19
申请号：JP23047594
申请日：1994-08-30
申请人： HOKKAIDO SUMIDEN SEIMITSU KK , SUMITOMO ELECTRIC INDUSTRIES
发明人： MINATO YOSHIHIRO , KANAYAMA TATSUYA , MARUYAMA MASAO , YAMAZAKI ISAO
IPC分类号： C04B35/64 , B22F3/12 , B22F5/12
摘要： PURPOSE: To shorten molding time and sintering time and to enhance the thermal efficiency and the quality of products by at the time of sintering connecting and interlocking a press molding machine and a heating and annealing furnace and sintering compacts to be sintered right after molding at the time of producing a hard alloy by powder metallurgy. CONSTITUTION: The raw material powder compounded to a prescribed compsn. is added and mixed with a lubricant and an org. binder and is ground and the powder mixture formed in such a manner is packed into the metal molds and is press molded by the press molding machine 1 at the time of producing the hard allay consisting of a sintered hard alloy, cermet or ceramics. Next, the compacts 3 to be sintered after the molding are immediately sent by a feeding mechanism 2 and by utilizing light energy to the sintering furnace 4 which is divided to an org. lubricant removing section 5 and a sintering section 6. The compacts 3 to be sintered are subjected to removal of the lubricant and the org. binder at a prescribed temp. by a heater 9 in the removing section 5 and are sent to the sintering section 6, where the compacts are sintered by a light source section 10 having good thermal efficiency. As a result, the productivity is improved and since the sintering conditions are variable by every work, the quality is improved.

13. 发明专利

JPH06341882A METHOD AND DEVICE FOR MEASURING FLOW SPEED OF POWDER AND PARTICLES 失效
公开(公告)号：JPH06341882A
公开(公告)日：1994-12-13
申请号：JP13174793
申请日：1993-06-02
申请人： SUMITOMO ELECTRIC INDUSTRIES , HOKKAIDO SUMIDEN SEIMITSU KK
发明人： MINATO YOSHIHIRO , MARUYAMA MASAO , KANAYAMA TATSUYA
IPC分类号： G01G13/00 , G01G17/04
摘要： PURPOSE:To accurately obtain the degree of flow of powder and particles without any scattering in measurement values. CONSTITUTION:The dropping weight of a specific amount of metal powder in a funnel 1 is received by a cup 3 and is measured by an electronic balance 4. When the dropping weight exceeds a initial setting value L0, a timer 14 is activated via a sequencer and then a flow speed is obtained according to the time until a final setting value H0 and the weight measured during that period. The degree of flow is measured from the flow speed.

14. 发明专利

JPH06108118A HIGH-STRENGTH CEMENTED CARBIDE ALLOY COMPOSITE MATERIAL COMBINED WITH LOW-CARBON STEEL AND ITS PRODUCTION 失效
公开(公告)号：JPH06108118A
公开(公告)日：1994-04-19
申请号：JP27527092
申请日：1992-09-17
申请人： KAMODA SHUICHI , SAKAI MASAHIRO , MIYAKOSHI YASUKI , MAKINO ISAO , HOKKAIDO SUMIDEN SEIMITSU KK , SUMITOMO ELECTRIC INDUSTRIES
发明人： KAMODA SHUICHI , SAKAI MASAHIRO , MIYAKOSHI YASUKI , MAKINO ISAO , KANAYAMA TATSUYA , YAMAGUCHI KAZUHIRO , MARUYAMA MASAO , SHIBATA ISAO , MINATO YOSHIHIRO
IPC分类号： B22F7/00 , B22F7/08
摘要： PURPOSE:To provide the composite body useful as wear resistant tools and large-sized tools by diffusion joining a high-hardness cemented carbide and a cemented carbide for joining and the cemented carbide for joining and steel and specifying the ratio of the bond phase of the cemented carbide for joining and the thickness of the etaphase between the cemented carbide for joining and the steel. CONSTITUTION:This composite body is constituted by diffusion joining of the high- hardness cemented carbide as well as the cemented carbide for joining and the cemented carbide for joining and the steel. The ratio of the bond phase in the cemented carbide for joining is larger by 10 to 45wt.% of the bond phase in the high-hardness cemented carbide and the thickness of the eta phase between the cemented carbide for joining and the steel is 0.5 to 50mu. The steel, the high-hardness cemented carbide and the cemented carbide for joining can be diffusion joined with one stage by adopting the constitution in which the bond phase quantity in the cemented carbide for joining is as described above. The steel to be used preferably contains

15. 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

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