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41. 发明专利

JPS61195351A NON-DESTRUCTIVE DECIDING METHOD FOR CARBURIZING DEPTH 失效
公开(公告)号：JPS61195351A
公开(公告)日：1986-08-29
申请号：JP3719185
申请日：1985-02-25
申请人： KUBOTA LTD
发明人： TAKAHASHI MAKOTO
IPC分类号： G01N27/72
摘要： PURPOSE:To realize a non-destructive deciding method for carburizing depth in a simple and prompt manner by arranging so that the magnetic field of a Hall probe incorporated with a Hall element and a permanent magnet is inclined by the magnetism of a carburized part to permit detection of the electromotive force. CONSTITUTION:When a Hall probe 30 incorporated with a Hall element 31 and the permanent magnet 32 are drawn near to a material T to be measured, the lines of magnetic force passing through the element are parallel to the element so that the Hall effect is not produced when the exciting current is supplied, so that the Hall electromotive force is zero. When there is a carburized part T in the inner surface of the material T, the lines of magnetic force crossing the Hall element 31 are tilted by the strong magnetism caused thereby so that the electromotive force correlated with the depth of carburization is produced. A decarburized layer D present on the outer surface of the material T does not affect the tilt of the magnetic lines of force because it is present uniformly with a uniform thickness. Hence it is possible to detect the presence or absence and the depth of carburization while it is unnecessary to remove the decarburized layer.

42. 发明专利

JPS6138256B2 失效
公开(公告)号：JPS6138256B2
公开(公告)日：1986-08-28
申请号：JP7690882
申请日：1982-05-07
申请人： KUBOTA LTD
发明人： SUGITANI JUNICHI , ASHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C19/05 , C22C19/03 , C22C30/00 , C22C38/00 , C22C38/48

43. 发明专利

JPS5944365B2 JPS5944365B2 - 失效
公开(公告)号：JPS5944365B2
公开(公告)日：1984-10-29
申请号：JP15209775
申请日：1975-12-20
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , TAKAHASHI MAKOTO
IPC分类号： B22D27/04 , B22D15/00 , B22D27/20 , B22D30/00 , C21D5/00 , C21D6/00 , C22C33/04 , C22C38/00

44. 发明专利

JPS596910B2 JPS596910B2 - 失效
公开(公告)号：JPS596910B2
公开(公告)日：1984-02-15
申请号：JP360581
申请日：1981-01-12
申请人： Kubota Ltd
发明人： SUGITANI JUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/44 , C22C38/54
CPC分类号： C22C38/44 , C22C38/54

45. 发明专利

JPS59586B2 JPS59586B2 - 失效
公开(公告)号：JPS59586B2
公开(公告)日：1984-01-07
申请号：JP11884380
申请日：1980-08-28
申请人： Kubota Ltd
发明人： MURAKAMI SHINICHI , SUGITANI JUNICHI , TAKAHASHI MAKOTO
IPC分类号： C22C38/00 , C22C38/44

46. 发明专利

JPS5864360A HEAT RESISTANT CAST STEEL 失效
公开(公告)号：JPS5864360A
公开(公告)日：1983-04-16
申请号：JP16248181
申请日：1981-10-12
申请人： KUBOTA LTD
发明人： SUGITANI JIYUNICHI , YOSHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/06 , C22C38/14 , C22C38/50 , C22C38/54
摘要： PURPOSE:To enhance the creep rupture strength at high temp., thermal impact resistance and carburization resistance by adding prescribed amounts of C, Si, Mn, Cr, Ni, Nb, W, Mo, N, Ti, Al, B and Fe. CONSTITUTION:This heat resistant cast steel consists of 0.3-0.6% C,

47. 发明专利

JPS57116758A Heat resistant cast steel 失效
标题翻译：耐热铸钢
公开(公告)号：JPS57116758A
公开(公告)日：1982-07-20
申请号：JP9136781
申请日：1981-06-13
申请人： Kubota Ltd
发明人： SUGITANI JIYUNICHI , ASHIMOTO TERUO , TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/50
摘要： PURPOSE: To obtain a heat resistant cast steel with excellent creep rupture strength at ≥ about 1,000°C high temp., excellent thermal impact resistance, etc. by adding N and Ti to a heat resistant cast steel contg. Cr, Ni and Nb.
CONSTITUTION: This heat resistant cast steel consists of, by wt., 0.3W0.6% C, ≤2.0% Si, ≤2.0% Mn, 20W30% Cr, 30W40% Ni, 0.3W1.5% Nb, 0.04W0.15% N, 0.04W0.15% Ti and the balance essentially Fe. N stabilizes and strengthens the austenite phase in the form of solubilized nitrogen, and it forms carbonitride together with Ti carbide or C, makes the grains fine, and inhibits the growth, thereby contributing to improvements in the strength at high temp. and the thermal impact characteristics. Ti precipitates and disperses as carbide or carbonitride as mentioned above, and it strengthens the grain boundaries and enhances the intergranular corrosion resistance, thereby considerably enhancing the characteristics at high temp.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过在耐热铸钢件中添加N和Ti，获得具有优异蠕变断裂强度的耐热铸钢，在> =约1000℃高温下，优异的耐热冲击性等。 Cr，Ni和Nb。构成：该耐热铸钢由以重量计为0.3-0.6％C，<= 2.0％Si，<= 2.0％Mn，20-30％Cr，30-40％Ni，0.3-1.5％Nb， 0.04-0.15％N，0.04-0.15％Ti，余量基本为Fe。 N以增溶氮的形式稳定并加强奥氏体相，与碳化钛或碳一起形成碳氮化物，使晶粒细化，抑制生长，有助于提高高温强度。和热冲击特性。如上所述，Ti作为碳化物或碳氮化物析出并分散，并且增强晶界并提高晶间耐腐蚀性，从而显着提高高温下的特性。

48. 发明专利

JPS54121222A HEAT RESISTANT CAST ALLOY HAVING EXCELLENT ANTII CEMENTATION PROPERTY AND WELDABILITY 失效
公开(公告)号：JPS54121222A
公开(公告)日：1979-09-20
申请号：JP3020778
申请日：1978-03-14
申请人： KUBOTA LTD
发明人： TAKAHASHI MAKOTO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/48 , C22C38/58
摘要： PURPOSE:High Cr-Ni alloy steel includes a specific amount of Si and Nb to thereby provide an heat resistant cast alloy having excellent anti-cementation property and weldability. CONSTITUTION:A high alloy steel contains, C: 0.4 to 0.55%, Si: 2.0 to 2.4%, Mn

49. 发明专利

JPS52149214A AUSTENITIC HEATTRESISTING CAST ALLOY 失效
公开(公告)号：JPS52149214A
公开(公告)日：1977-12-12
申请号：JP6725976
申请日：1976-06-07
申请人： KUBOTA LTD
发明人： SUGITANI JIYUNICHI , TAKAHASHI MAKOTO
IPC分类号： C22C38/00 , C22C38/40
摘要： PURPOSE:The austenitic heat-resisting cast alloy having excellent creep rupture strength and creep ductility.

50. 发明专利

JPS5270924A HEATTRESISTING AUSTENITE CASTING ALLOY 失效
公开(公告)号：JPS5270924A
公开(公告)日：1977-06-13
申请号：JP14778075
申请日：1975-12-10
申请人： KUBOTA LTD
发明人： SUGITANI JIYUNICHI , TAKAHASHI MAKOTO
IPC分类号： C22C38/00 , C22C38/48
摘要： PURPOSE:The content of C. Si. Mn. Cr. Ni. Nb in the said casting alloy are specified; furthermore each specified amount of Mo or/and W is added and the faults in usual materials are eliminated. Thereby, the new heat resisting austenite casting alloy is obtained which is superior markedly as a collector materials.

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