专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

DE2705052A1 未知
公开(公告)号：DE2705052A1
公开(公告)日：1977-08-18
申请号：DE2705052
申请日：1977-02-08
申请人： KOBE STEEL LTD
发明人： KAWAI NOBUYASU , HONMA KATUHIKO , FUJIMOTO HIROFUMI , TAKIGAWA HIROSHI , HIRANO MINORU , ISHII MASARU
IPC分类号： C22C33/02 , C22C38/00 , C22C38/22

2. 发明专利

DE2658813A1 未知
公开(公告)号：DE2658813A1
公开(公告)日：1977-06-30
申请号：DE2658813
申请日：1976-12-24
申请人： KOBE STEEL LTD
发明人： YUKAWA TORU , KAWAI NOBUYASU , HONMA KATUHIKO , FUJIMOTO HIROFUMI , TAKIGAWA HIROSHI , HIRANO MINORU , ISHII MASARU , TATSUNO TSUNEO
IPC分类号： C22C33/02 , C22C38/00 , C22C38/12 , C22C1/04

3. 发明专利

JPS63290201A PRODUCTION OF GREEN COMPACT FOR PRODUCING SINTERED HIGH ALLOY STEEL 失效
公开(公告)号：JPS63290201A
公开(公告)日：1988-11-28
申请号：JP12458887
申请日：1987-05-21
申请人： KOBE STEEL LTD
发明人： OE KIYOMI , HIRANO MINORU , TAKIGAWA HIROSHI
IPC分类号： B22F3/02
摘要： PURPOSE:To prevent development of crack at the time of dewaxing even in case a green compact is large size by using paraffins having different melting points at the same time in the method which the green compact is made and dewaxed after mixing the paraffin to mixed powders of ceramic having high hardness and high alloy steel powder. CONSTITUTION:The paraffin for compacting lubricant is added and mixed to the mixed powder having the high hardness ceramic powder, to provide the powder for compacting. In this case, plural kind of the paraffins having different melting points are added at the same time and then, combination of paraffins having large difference between melting points are desirable. Next, the above powder for compacting is ordinarily compacted isodirectionally by cold static hydraulic pressurizing, to obtain the green compact with the paraffin and succesively the paraffin therein is dewaxed to produce the green compact. By this method, at the time of dewaxing by heating as the paraffin can be vaporized over the wide range, the paraffin can be slowly exhausted from the green compact surface and the development of cracks can be prevented.

4. 发明专利

JPS6369939A MANUFACTURE OF SINTERED HIGH-ALLOY STEEL 失效
公开(公告)号：JPS6369939A
公开(公告)日：1988-03-30
申请号：JP21338886
申请日：1986-09-09
申请人： KOBE STEEL LTD
发明人： TAKIGAWA HIROSHI , HIRANO MINORU , OE KIYOMI
IPC分类号： B22F3/14 , B22F3/15 , C22C33/02 , C22C38/00
摘要： PURPOSE:To manufacture a sintered high-alloy steel excellent in wear resistance, by adding specific amounts of powdered carbides of group IVa metals, etc., to the atomized powder of tool steel, by mixing the above, by subjecting the resulting powder mixture to two-stage vacuum sintering to form a sintered compact with a specific density, and then by applying HIP treatment to the above. CONSTITUTION:One or >=2 kinds among the powders of the carbides and nitrides of metals selected from group IVa elements (Ti, Zr, Hf, etc.) and group Va elements (V, Nb, Ta, etc.) of the periodic table are added by 1.0-5.0wt% to the atomized powder of tool steel (about 3-30mu average grain size), and they are mixed by means of a wet method. Subsequently, the powder mixture is dried to be formed into a uniform powder mixture and then is spontaneously charged into a crucible made of refractory by the prescribed quantity, which is presintered in a vacuum atmosphere of =93% relative density. The sintered compact is subjected to HIP treatment by means of an HIP treatment equipment under the conditions of about 1,000-1,200 deg.C and >=about 600atom. In this way, the manufacturing process can be remarkably shortened, so that sintered high-alloy steel excellent in wear resistance can be obtained at a low cost.

5. 发明专利

JPS62192574A MANUFACTURE OF NITRIDED SINTERED HIGH-SPEED STEEL FOR DOT PIN 失效
公开(公告)号：JPS62192574A
公开(公告)日：1987-08-24
申请号：JP3214086
申请日：1986-02-17
申请人： KOBE STEEL LTD
发明人： HIRANO MINORU , OE KIYOMI , TAKIGAWA HIROSHI
IPC分类号： B41J2/25 , B22F3/24 , B41J2/28 , C22C33/02 , C22C38/00 , C23C8/26
摘要： PURPOSE:To manufacture a nitride sintered high-speed steel for a dot pin having superior wear resistance and fatigue strength by cold working a sintered high- speed steel contg. specified amounts of Cr, Mo, W, V, N and C into a wire and by nitriding the wire under proper conditions. CONSTITUTION:A sintered high-speed steel contg., by weight, 3-5% Cr, 1-9% Mo, 2-10% W (W+2Mo=16-20%), 3-8% V, =0.2%. Thus, a wire having superior wear resistance, fatigue strength, high bending strength, relatively low specific gravity and satisfactory seizing resistance is obtd.

6. 发明专利

JPS6115145B2 JPS6115145B2 - 失效
公开(公告)号：JPS6115145B2
公开(公告)日：1986-04-22
申请号：JP7821277
申请日：1977-06-29
申请人： Kobe Steel Ltd
发明人： TSUJI KATSUMI , PPONMA KATSUHIKO , HIRANO MINORU , TATENO TSUNEO , FUJIMOTO HIROFUMI , TAKIGAWA HIROSHI , ISHII MASARU , KAWAI NOBUYASU
IPC分类号： C22C33/02 , C22C38/00 , C22C38/30

7. 发明专利

JPS6115144B2 JPS6115144B2 - 失效
公开(公告)号：JPS6115144B2
公开(公告)日：1986-04-22
申请号：JP7820777
申请日：1977-06-29
申请人： Kobe Steel Ltd
发明人： TSUJI KATSUMI , PPONMA KATSUHIKO , HIRANO MINORU , TATENO TSUNEO , FUJIMOTO HIROFUMI , TAKIGAWA HIROSHI , ISHII MASARU , KAWAI NOBUYASU
IPC分类号： C22C33/02 , C22C38/00 , C22C38/30

8. 发明专利

JPS6115139B2 JPS6115139B2 - 失效
公开(公告)号：JPS6115139B2
公开(公告)日：1986-04-22
申请号：JP7820677
申请日：1977-06-29
申请人： Kobe Steel Ltd
发明人： TSUJI KATSUMI , PPONMA KATSUHIKO , HIRANO MINORU , TATENO TSUNEO , FUJIMOTO HIROFUMI , TAKIGAWA HIROSHI , ISHII MASARU , KAWAI NOBUYASU
IPC分类号： C22C33/02 , C22C38/00 , C22C38/24 , C22C38/30

9. 发明专利

JPS616254A HIGH HARDNESS AND HIGH TOUGHNESS NITRIDED POWDER HIGH SPEED STEEL 失效
公开(公告)号：JPS616254A
公开(公告)日：1986-01-11
申请号：JP12828784
申请日：1984-06-20
申请人： KOBE STEEL LTD
发明人： KAWAI NOBUYASU , HIRANO MINORU , ENOSAKA HAJIME , FUJIMOTO HIROFUMI
IPC分类号： C22C33/02 , C22C38/00
摘要： PURPOSE:To obtain a high hardness and high toughness nitrided powder high speed by incorporating specified ratios of C, Cr, Mo, W, V, Co, N to Fe. CONSTITUTION:The nitrided powder high speed steel consisting of, by weight, C content (%) satisfying a formula Ceq+0.15 = about 69HRC hardness, high hardness and high toughness of >= about 270kg/mm. deflective strength.

10. 发明专利

JPS605856A HIGH-HARDNESS HIGH-SPEED STEEL 失效
公开(公告)号：JPS605856A
公开(公告)日：1985-01-12
申请号：JP11228183
申请日：1983-06-22
申请人： KOBE STEEL LTD
发明人： TAKADA HISASHI , KAWAI NOBUYASU , NOUTOMI KANJI , HIRANO MINORU
IPC分类号： C22C38/00 , C22C38/28 , C22C38/34
摘要： PURPOSE:To produce a high-speed steel in powder which can deal with abuse service conditions and has excellent hardness, toughness and wear resistance by subjecting further a high-speed steel added with a specific amt. of Ti or Si to a nitriding treatment. CONSTITUTION:A high-speed steel having the compsn. contg. 3-5% Cr, 1-5% Mo, 1-5% W (where 8-11% W+2Mo) and 2-4% V is further added with 0.5-2.5% Ti or 1-2% Si. The content of C is so incorporated in said steel as to satisfy the equation of Ceq 0.2% N is incorporated therein. The high-speed steel powder is made into a higher- density billet by an HIP (hydrostatic press) method by which the high-speed steel member having excellent hardness, toughness and wear resistance is obtd.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式