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1. 发明专利

DE102006048442B4 Fertigungsverfahren für ein verschleißfestes Sinterelement, einen gesinterten Ventilsitz, und Fertigungsverfahren hierfür 未知
公开(公告)号：DE102006048442B4
公开(公告)日：2011-03-31
申请号：DE102006048442
申请日：2006-10-12
申请人： HITACHI POWDERED METALS
发明人： YOSHIHIRO TATSUAKI , KAWATA HIDEAKI , FUJITSUKA HIROKI , MAKI KUNIO , TSUBOI TORU
IPC分类号： B22F5/00 , F01L3/02

2. 发明专利

GB2446911B Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor 未知
公开(公告)号：GB2446911B
公开(公告)日：2010-03-31
申请号：GB0724036
申请日：2007-12-10
申请人： HITACHI POWDERED METALS
发明人： YOSHIHIRO TATSUAKI , KAWATA HIDEAKI , FUJITSUKA HIROKI , MAKI KUNIO , TSUBOI TORU
IPC分类号： F01L3/02 , C22C1/05 , C22C29/02 , C22C29/14 , C22C29/18 , C22C33/02
摘要： A manufacturing method for wear resistant sintered member is provided. The method includes: compacting a raw powder containing a matrix forming powder and a hard phase forming powder into a green compact, the matrix forming powder containing 90 mass % or more of a powder having the maximum particle diameter of 46 μm, and the hard phase forming powder being 40 to 70 mass % with respect to the raw powder; and sintering the green compact.

3. 发明专利

GB2446911A Sintered bodies comprising a hard phase 未知
公开(公告)号：GB2446911A
公开(公告)日：2008-08-27
申请号：GB0724036
申请日：2007-12-10
申请人： HITACHI POWDERED METALS
发明人： YOSHIHIRO TATSUAKI , KAWATA HIDEAKI , FUJITSUKA HIROKI , MAKI KUNIO , TSUBOI TORU
IPC分类号： F01L3/02 , C22C1/05 , C22C29/02 , C22C29/14 , C22C29/18 , C22C33/02
摘要： Making a wear resistant member by compacting a powder mixture containing a matrix forming powder and a hard phase forming powder, the matrix forming powder containing 90 mass % or more of particles having a maximum diameter of 46 microns, and the hard phase forming powder being 40 to 70 mass % with respect to the powder mixture; and sintering the compacted powder. A method of making a valve seat by mixing 40-70 mass % of a hard grains of maximum diameter 150 microns and comprising (by weight): 20-60 % molybdenum, 3-12 % chromium, 1-5 % silicon and the balance cobalt; 0.8-2.0 mass % graphite; and the balance matrix forming powder of maximum diameter 74 microns. The mixture is compacted and sintered. Also a sintered valve seat comprising 40-70 % by weight of hard particles comprising (by weight): 20-60 % molybdenum, 3-12 % chromium, 1-5 % silicon and the balance cobalt and a matrix which is not peralite, sorbite or bainite.

4. 发明专利

GB2431166A Sintered bodies comprising a hard phase 未知
公开(公告)号：GB2431166A
公开(公告)日：2007-04-18
申请号：GB0620185
申请日：2006-10-12
申请人： HITACHI POWDERED METALS
发明人： YOSHIHIRO TATSUAKI , KAWATA HIDEAKI , FUJITSUKA HIROKI , MAKI KUNIO , TSUBOI TORU
IPC分类号： C22C29/00 , F01L3/02 , C22C29/06 , C22C29/14 , C22C29/16
摘要： Making a wear resistant member by compacting a powder mixture containing a matrix forming powder and a hard phase forming powder, the matrix forming powder containing 90 mass % or more of particles having a maximum diameter of 46 microns, and the hard phase forming powder being 40 to 70 mass % with respect to the powder mixture; and sintering the compacted powder. A method of making a valve seal by mixing 40-70 mass % of a hard grains of maximum diameter 150 microns and comprising (by weight): 20-60% molybdenum, 3-12% chromium, 1-5% silicon and the balance cobalt; 0.8-2.0 mass % graphite: and the balance matrix forming powder of maximum diameter 74 microns. The mixture is compacted and sintered. Also a sintered valve seat comprising 40-70% by weight of hard particles comprising (by weight): 20-60% molybdenum, 3-12% chromium, 1-5% silicon and the balance cobalt and a matrix which is not peralite, sorbite or bainite.

5. 发明专利

GB2312217A High-temperature wear-resistant sintered alloy 未知
公开(公告)号：GB2312217A
公开(公告)日：1997-10-22
申请号：GB9707598
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： F01L3/02 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/24 , C22C38/46
摘要： The alloy includes 3-13.4 wt% of W, 0.4-5.6 wt% or 0.8-5.9 wt% of V, 0.2-5.6 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, 0.6-2.2 wt% of C, and a Balance of Fe. The sintered alloy includes first and second phase which are distributed therein, in a form of spots, respectively. The second phase is in an amount of from 20 to 80 wt%, based on the total weight of the first and second phases. The first phase contains 3-7 wt% of W, 0.5-1.5 wt% of optional V, up to 1 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. The second phase contains 3-15 wt% of W, 2-7 wt% of V, 1-7 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. When the manganese contents of the first and second phases and the total of the sintered alloy are respectively in a range of from 0.2 to 1.0 wt%, sulfur is respectively contained therein in an amount of from 0.1 to 0.6 wt%. The sintered alloy has wear-resistant at high temperature and good compatibility without damaging mating part that is in contact with the sintered alloy.

6. 发明专利

DE60225767T2 未知
公开(公告)号：DE60225767T2
公开(公告)日：2009-04-16
申请号：DE60225767
申请日：2002-08-06
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： FUJITSUKA HIROKI , KAWATA HIDEAKI , HAYASHI KOICHIRO , MIYAZAWA TOMONORI , KOYANAGI KOJI , FUJIKI AKIRA , MURAMATSU HIDEKI , MAKI KUNIO , OKADA YOSHIO , NOMURA SHIN
IPC分类号： C22C33/02 , F01L3/02 , B22F3/26 , B22F5/00 , C22C38/00 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/44 , C22C38/60
摘要： A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase comprising Mo silicide particles dispersed in an Fe-based alloy matrix of the first hard phase and a second hard phase comprising a ferrite phase or a mixed phase of ferrite and austenite having a higher Cr concentration than the Fe-based alloy matrix surrounding a core consisting of Cr carbide particles, are diffused in an Fe-based alloy matrix, the Mo silicide particles are contained in the first hard phase in an amount of 3 to 25% by area, and the Cr carbide particles are contained in the second hard phase in an amount of 3 to 30% by area.

7. 发明专利

AT390495T 未知
公开(公告)号：AT390495T
公开(公告)日：2008-04-15
申请号：AT02017527
申请日：2002-08-06
申请人： HITACHI POWDERED METALS , NISSAN MOTOR
发明人： FUJITSUKA HIROKI , KAWATA HIDEAKI , HAYASHI KOICHIRO , MIYAZAWA TOMONORI , KOYANAGI KOJI , FUJIKI AKIRA , MURAMATSU HIDEKI , MAKI KUNIO , OKADA YOSHIO , NOMURA SHIN
IPC分类号： C22C33/02 , F01L3/02 , B22F3/26 , B22F5/00 , C22C38/00 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/44 , C22C38/60
摘要： A wear resistant sintered member exhibits superior wear resistance at the same level as those of the conventional materials without using a Co-based hard phase is provided. A first hard phase comprising Mo silicide particles dispersed in an Fe-based alloy matrix of the first hard phase and a second hard phase comprising a ferrite phase or a mixed phase of ferrite and austenite having a higher Cr concentration than the Fe-based alloy matrix surrounding a core consisting of Cr carbide particles, are diffused in an Fe-based alloy matrix, the Mo silicide particles are contained in the first hard phase in an amount of 3 to 25% by area, and the Cr carbide particles are contained in the second hard phase in an amount of 3 to 30% by area.

8. 发明专利

DE19715708A1 High temperature wear resistant sintered alloy 未知
公开(公告)号：DE19715708A1
公开(公告)日：1997-10-16
申请号：DE19715708
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： C22C33/02 , C22C38/12
摘要： A sintered alloy comprises (based on the total weight of the alloy), 3-13.4 wt.% of W, 0.4-5.6 wt.% of V, 0.2-5.6 wt.% of Cr, 0.1-0.6 wt.% of Si, 0.1-0.6 wt.% of Mn, 0.6-2.2 wt.% of C, and a balance of Fe. The sintered alloy includes: (A) a first phase comprising (based on the total weight of the first phase) 3-7 wt.% of W, up to 1 wt.% of Cr, 0.1-0.6 wt.% of Si, 0.1-0.6 wt.% of Mn, up to 2.2 wt.% of C and a balance of Fe; and (B) a second phase comprising (based on the total weight of the second phase) 3-15 wt.% of W, 2-7 wt.% of V, 1-7 wt.% of Cr, 0.1-0.6 wt.% of Si, 0. 1-0.6 wt.% of Mn, up to 2.2 wt.% of C and a balance of Fe. The second phase is in an amount of 20-80 wt.% (based on the total weight of the first and second phases) where the first and second phases are distributed in the sintered alloy, in a form of spots, respectively. Also claimed are: (1) an alloy as above which comprises 0.8-5.9 wt.% of V, with the first phase additionally comprising 0.5-1.5 wt.% of V; (2) an alloy as above which comprises 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first and second phases comprising 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; (3) an alloy as above which comprises 0.8-5.9 wt.% of V, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first phase comprising 0.5-1.5 wt.% of V, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S and the second phase comprising 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; (4) an alloy as above which comprises 0.6-5.0 wt.% of Si, with the first and second phases comprising 0.6-5.0 wt.% of Si; (5) an alloy as above which comprises 0.8-5.9 wt.% of V and 0.6-5.0 wt.% of Si, with the first phase comprising 0.5-1.5 wt.% of V and 0.6-5.0 wt.% of Si and the second phase comprising 0.6-5.0 wt.% of Si; (6) an alloy as above which comprises 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first and second phases comprising 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S; and (7) an alloy as above which comprises 0.8-5.9 wt.% of V, 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S, with the first phase comprising 0.5-1.5 wt.% of V, 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S and the second phase comprising 0.6-5.0 wt.% of Si, 0.2-1.0 wt.% of Mn and additionally 0.1-0.6 wt.% of S.

9. 发明专利

DE19715708B4 未知
公开(公告)号：DE19715708B4
公开(公告)日：2005-09-01
申请号：DE19715708
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： C22C33/02

10. 发明专利

GB2312217B High-temperature wear-resistant sintered alloy 未知
公开(公告)号：GB2312217B
公开(公告)日：1998-03-04
申请号：GB9707598
申请日：1997-04-15
申请人： NISSAN MOTOR , HITACHI POWDERED METALS
发明人： AOKI YOSHIMASA , ISHII KEI , HAYASHI KOICHIRO , AONUMA KOUICHI , KAWATA HIDEAKI , MAKI KUNIO , EHIRA ATSUSHI , FUJIKI AKIRA , ABO SADAYUKI , SATO SEIGO
IPC分类号： F01L3/02 , B22F5/00 , C22C33/02 , C22C38/00 , C22C38/24 , C22C38/46
摘要： The alloy includes 3-13.4 wt% of W, 0.4-5.6 wt% or 0.8-5.9 wt% of V, 0.2-5.6 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, 0.6-2.2 wt% of C, and a Balance of Fe. The sintered alloy includes first and second phase which are distributed therein, in a form of spots, respectively. The second phase is in an amount of from 20 to 80 wt%, based on the total weight of the first and second phases. The first phase contains 3-7 wt% of W, 0.5-1.5 wt% of optional V, up to 1 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. The second phase contains 3-15 wt% of W, 2-7 wt% of V, 1-7 wt% of Cr, 0.1-0.6 wt% or 0.6-5.0 wt% of Si, 0.1-0.6 wt% or 0.2-1.0 wt% of Mn, up to 2.2 wt% of C, and a balance of Fe. When the manganese contents of the first and second phases and the total of the sintered alloy are respectively in a range of from 0.2 to 1.0 wt%, sulfur is respectively contained therein in an amount of from 0.1 to 0.6 wt%. The sintered alloy has wear-resistant at high temperature and good compatibility without damaging mating part that is in contact with the sintered alloy.

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