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1. 发明专利

JPH10317007A METHOD FOR COMPACTING GREEN COMPACT 失效
公开(公告)号：JPH10317007A
公开(公告)日：1998-12-02
申请号：JP14312597
申请日：1997-05-16
申请人： ISHIZAKI KOZO , KUROKI KOGYOSHO KK
发明人： TAKADA ATSUSHI , KINEMUCHI YOSHIAKI , ISHIZAKI KOZO , KUROKI HIRONORI
IPC分类号： B30B5/02 , B22F3/02 , B22F3/04 , B28B7/34 , B30B11/00
摘要： PROBLEM TO BE SOLVED: To provide a new compacting method for metal and ceramic materials by the use of a powder as a starting material and also to provide a new compacting method where reduction in the die cost in a small-quantity and multikind production system is made possible and also the production of green compacts of complicated shapes, impossible by means of a die, can be performed without use of a die. SOLUTION: In the method of compacting a granular body as a starting material into a green compact, a foamed form mold is used. This mold is an acrylic resin type or styrene resin type plastic form or foamed form mold. Compaction is performed by using this mold by means of cold isostatic pressing. In this method, the contraction of this mold is utilized. This mold is constituted so that the infiltration of the pressure medium from the outside of the mold toward the inside can be prevented. Further, this mold has an easily releasing property. Moreover, at the time of releasing the resultant green compact from the mold, resin, such as polyethylene wrap film and silicone, and the like are used, or the foamed form is degreased by heat treatment.

2. 发明专利

JPH07251378A POROUS FERROUS METAL BOND DIAMOND GRINDING WHEEL AND ITS MANUFACTURE 失效
公开(公告)号：JPH07251378A
公开(公告)日：1995-10-03
申请号：JP5973894
申请日：1994-02-19
申请人： ISHIZAKI KOZO
发明人： ISHIZAKI KOZO , YAMAMOTO ARATA , TAKADA ATSUSHI , KONDOU YOSHIHITO
IPC分类号： B24D3/00 , B24D3/02 , B24D3/04 , B24D3/06 , B24D3/10 , C22C1/05
摘要： PURPOSE:To provide a grinding wheel excellent in sharpness by way of promoting autogenous blade growing action of abrasive grains and making the most of an abrasive characteristic of a bond by forming the grinding wheel by respectively using diamond as the abrasive grains and ferrous metal powder as a binder and making a part of the binder as what contains a large number of pores. CONSTITUTION:A grinding stone of ferrous metal chemically and physically binding and holding abrasive grains is formed by respectively using diamond as the abrasive grains and ferrous metal powder as a binder and making a part of the binder as what contains a large number of pores. In this case, porosity of the whole grinding wheel is set in a range of 5-60%. Additionally, as the ferrous metal, it is selected from a group consisting of iron powder, carbon coated iron powder, nitrogen iron powder and a mixture of carbon and iron. The grinding wheel such as this is manufactured by heating and sintering at 900-1150 deg. after moulding the abrasive grains and the binder in a specified dimensional shape by way of mixing them, and a mechanical characteristic of the binder part and holding power of the abrasive grains are controlled by adjustment of the porosity.

3. 发明专利

JPH0368708A METHOD FOR REFORMING POROUS BODY HAVING OPENED PORES 失效
公开(公告)号：JPH0368708A
公开(公告)日：1991-03-25
申请号：JP20542189
申请日：1989-08-07
申请人： ISHIZAKI KOZO , OKADA SHOJIRO , KOBE STEEL LTD
发明人： ISHIZAKI KOZO , OKADA SHOJIRO , FUJIKAWA TAKAO , TAKADA ATSUSHI
IPC分类号： B01D39/20 , B22F3/11 , B22F3/14 , B22F5/00 , C04B35/645 , C04B41/00 , C04B41/80
摘要： PURPOSE:To improve strength while increasing opened porosity by executing hot isostatic pressurizing to a porous body composed of ceramic quality, etc., and having the opened pores at the specific temp. to make the matrix part close and uniform. CONSTITUTION:To the porous body composed of the ceramic quality and/or metallic quality and having the opened pores, the hot isostatic pressing is executed at the temp., which the matrix part in this porous body is softened or melted, to make the matrix part close and uniform. Then, the opened porosity in the porous body is made 20 -90%, the treating pressure in the hot isostatic pressing is made 0.1 - 1000 MPa, and the treating temp. is made to in the range of + or -20% of absolute temp. to the sintering temp. or vitrified temp. under the ordinary pressure. By this method, the defects of the closed pores at the matrix part, inner crack, segregation, etc., are eliminated, and the closeness and uniformity in the matrix part are attained and this can be utilized as various kinds of diffusers and filters.

4. 发明专利

JP2000317843A POROUS IRON SYSTEM METAL BOND DIAMOND GRINDING WHEEL 失效
公开(公告)号：JP2000317843A
公开(公告)日：2000-11-21
申请号：JP2000129964
申请日：2000-04-28
申请人： ISHIZAKI KOZO
发明人： ISHIZAKI KOZO , YAMAMOTO ARATA , TAKADA ATSUSHI , KONDOU YOSHIHITO
IPC分类号： B24D3/10 , B24D3/00 , B24D3/06
摘要： PROBLEM TO BE SOLVED: To provide a porous iron system metal bond diamond grinding wheel that has target strength and pore rate, and is possible to carry out continuous grinding for long time without clogging and is excellent in dressing. SOLUTION: This device is provided with diamond and iron metallic powder as bonding material. The part of the bonding material includes many pores. The wheel grains are combined to iron metal that is a bonding material chemically and physically and held. The iron metal includes iron powder, carbon coating iron powder, nitriding iron powder, and mixture of carbon and iron. It is controlled by adjusting the pore rate of whole grinding wheel in the scope of 5-60% and the average grading of iron metallic powder in the scope of 0.1-500 μm.

5. 发明专利

JPH11165261A POROUS ABRASIVE GRAIN GRINDING WHEEL AND ITS MANUFACTURE 失效
公开(公告)号：JPH11165261A
公开(公告)日：1999-06-22
申请号：JP33313797
申请日：1997-12-03
申请人： ISHIZAKI KOZO , TAKADA ATSUSHI
发明人： ISHIZAKI KOZO , TAKADA ATSUSHI , KUMETA KAZUYUKI
IPC分类号： B24D3/00 , B24D3/10 , B24D18/00
摘要： PROBLEM TO BE SOLVED: To improve combining force between super abrasive grains and a combining material and improve weariness of the combining material in a grinding process and material of a grinding stone. SOLUTION: This grinding stone is made of super abrasive grains 1 as abrasive grains and metal powder as a binder 3, the binder 3 is formed in a porous body holding the super abrasive grains by chemically and physically binding, and after it is formed into the porous body, at least its surface is modified in ceramics. Firstly ejection of the abrasive grains is controlled, and thereafter, a holding state of the abrasive grains is controlled in a method to manufacture a porous grinding stone with materials of the super abrasive grains 1 as the abrasive grains and the metal powder as the binder 3. These super abrasive grains 1 are diamond and cubic boron nitride, and the binder 3 is more than one kind selected from a group consisting of Fe, Cu, Ni, Co, Cr, Ta, V, Nb, Al, W, Ti, Si and Zr, porosity of the whole grinding stone is 5-60%, favourably 5-45%.

6. 发明专利

JPH11156724A PRELIMINARY MOLDED MATERIAL AND GIRDING WHEEL MADE OF SAID PRELIMINARY MOLDED MATERIAL HAVING CONTROLLED ABRASIVE GRAIN INTERVALS 失效
公开(公告)号：JPH11156724A
公开(公告)日：1999-06-15
申请号：JP32857797
申请日：1997-11-28
申请人： ISHIZAKI KOZO , TAKADA ATSUSHI
发明人： ISHIZAKI KOZO , TAKADA ATSUSHI
IPC分类号： B24D3/00 , B24D3/18
摘要： PROBLEM TO BE SOLVED: To provide a grinding wheel where, in the case of abrasive grain small in grain size, the bonding force of abrasive grain bond is increased, the distribution of abrasive grain and its tip end height can be adjusted, the binding force of abrasive grain with biding agent can be made high, its dressing, berning-off, loading and grazing properties are well controlled in balance, and high efficiency, accuracy and processing quality can be actualized simultaneously. SOLUTION: In preliminary molded material for manufacturing a grinding wheel having controlled abrasive grain intervals, super abrasive grain is used in place of abrasive grain, and granule mixed with compound composed of metallic powder is used as binding agent. And the preliminary molded material is formed out of a combination of preliminary molded material molded out of granule used as raw material, which is mixed with composition composed of user abrasive grain in place of abrasive grain, with preliminary molded material molded out of granule as raw material composed of metallic powder as a binding agent. In this case, it is preferable to control the preliminary molded material acting as binding agent in such a way as to be worn out faster than the binding agent portion of the preliminary molded material containing abrasive grain in its raw material composition. The shape of the preliminary molded material is exemplified as a sheet shape and a bar-like shape.

7. 发明专利

JPH07251379A POROUS METAL BOND GRINDING WHEEL AND ITS MANUFACTURE 失效
公开(公告)号：JPH07251379A
公开(公告)日：1995-10-03
申请号：JP5974094
申请日：1994-02-19
申请人： ISHIZAKI KOZO
发明人： ISHIZAKI KOZO , YAMAMOTO ARATA , TAKADA ATSUSHI , KONDOU YOSHIHITO
IPC分类号： B24D3/04 , B24D3/02 , B24D3/06 , B24D3/10 , B24D3/34 , C22C1/05
摘要： PURPOSE:To provide a grinding wheel excellent in sharpness by way of promoting autogenous blade growing action of abrasive grains by forming the grinding stone by way of respectively using super abrasive grains as the abrasive grains and metal powder as a binder and holding the super abrasive grains by a part of the binder having a porous structural phase formed by powder s intering. CONSTITUTION:A desired grinding stone is formed by respectively using super abrasive grains as abrasive grains and metal powder as a binder and holding the super abrasive grains by a part of the binder having a porous structural phase formed by powder sintering. In this case, porosity of the whole grinding stone is set in a range of 5-60%. The grinding stone such as this is manufactured by heating and sintering after the abrasive grains and the binder are mixed and moulded in a specified dimensional shape, and a mechanical characteristic of the binder part and holding power of the abrasive grains are controlled by the porosity and/or concentration gradient of an interstitial solid solution element. Additionally, its sintering temperature is set at 0.8Tm to Tm (Tm is a melting point of the binder or liquid phase forming temperature).

8. 发明专利

JPH05148056A PRODUCTION OF POROUS MATERIAL HAVING THROUGH PORE 失效
公开(公告)号：JPH05148056A
公开(公告)日：1993-06-15
申请号：JP31683291
申请日：1991-11-29
申请人： ISHIZAKI KOZO , KOBE STEEL LTD
发明人： ISHIZAKI KOZO , TAKADA ATSUSHI , OKUMOTO YOSHIHIRO
IPC分类号： B22F3/24 , B01D39/20 , B22F3/11 , B22F5/00 , C04B38/00
摘要： PURPOSE:To obtain a mechanically strong porous material having a large number of through pores by forming through holes on a porous material with inlet voids by changing pressure of a pressure medium during hot isotropic pressurizing (HIP) under a given condition. CONSTITUTION:A porous material 1 having inlet voids 2 is subjected to HIP treatment by using a pressure medium at a temperature to soften or melt a material part 3 of the porous material. During the treatment, the pressure of the pressure medium is changed or the pressure medium is made to flow from one side of the porous material 1 to the other. Communicating parts 4 connected to the inlet voids 2 at both sides of the porous material 1 are destroyed to form through holes by parsing through the pressure medium.

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