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41. 发明专利

JPS5964765A Ni-al type plasma spraying powder material 失效
标题翻译： NI-AL型等离子喷涂粉末材料
公开(公告)号：JPS5964765A
公开(公告)日：1984-04-12
申请号：JP17448282
申请日：1982-10-06
申请人： Showa Denko Kk
发明人： SHIYOUJI TAKASHI , ASAKAWA ISAMU
IPC分类号： C23C4/08
CPC分类号： C23C4/08
摘要： PURPOSE:To provide an Ni-Al type plasma spraying metal powder material excellent in corrosion resistance and oxidation resistance, obtained by stirring a mixture obtained by mixing an Ni powder and an Al powder in a specific ratio in a ball mill for a long time. CONSTITUTION:5-30wt% fine powdery Al with a particle size of 100mum or less and the remainder Ni fine powder having a similar particle size are mixed to form a powdery mixture which is, in turn, charged into a ball mill to be mixed and comminuted in an inert gas atmosphere. Because both of Ni and Al are relatively soft and rich in ductility, a fine particle wherein fine particles of Ni 1 and Al 2 are firmly integrated is obtained. By using this fine particle as a plasma spray material, an Ni-Al type plasma spraying film excellent in corrosion resistance and oxidation resistance can be formed without necessitating a binder.
摘要翻译：目的：提供一种通过在球磨机中长时间搅拌通过以特定比例混合Ni粉末和Al粉末而获得的混合物而获得的耐腐蚀性和抗氧化性优异的Ni-Al型等离子体喷涂金属粉末材料。构成：将粒径为100μm以下的细小粉末状Al粉末和其余具有相似粒径的Ni细粉末混合，形成粉末状混合物，然后将其混入球磨机中进行混合，在惰性气体气氛中粉碎。由于Ni和Al两者相对较软并且延展性较好，因此可以获得Ni 1和Al 2的细颗粒牢固地结合的细小颗粒。通过使用该微粒作为等离子喷涂材料，可以形成耐腐蚀性和耐氧化性优异的Ni-Al型等离子体喷涂膜，而不需要粘合剂。

42. 发明专利

JPS58167482A FLAME SPRAYED FORMED BODY OF SILICON CARBIDE 失效
公开(公告)号：JPS58167482A
公开(公告)日：1983-10-03
申请号：JP4566182
申请日：1982-03-24
申请人： SHOWA DENKO KK
发明人： ASAKAWA ISAMU , MORIMURA TOSHIO
IPC分类号： C04B41/87 , B32B18/00 , C04B41/50 , C04B41/89

43. 发明专利

JPS5837169A ALLOY POWDER FOR MELT SPRAYING 失效
公开(公告)号：JPS5837169A
公开(公告)日：1983-03-04
申请号：JP13656981
申请日：1981-08-31
申请人： SHOWA DENKO KK
发明人： ASAKAWA ISAMU , SAITOU HIROSHI
IPC分类号： C22C19/00 , C23C4/06 , C23C4/08
摘要： PURPOSE:To provide alloy powder for melt spraying having excellent high temp. corrosion resistance and abrasion resistance by forming hard Cr carbide by addition of carbon in alloy powder of Ni-Cr or Co-Cr base. CONSTITUTION:A carbon material such as coke is added to powder of an Ni- Cr alloy or Co-Cr alloy contg. 30-80wt% Cr and is subjected to pack-carburizing at about 1,300 deg.C to contain 2-10wt% C and to allow hard Cr carbide to form. Or the carbon material is added to the Ni-Cr alloy or Co-Cr alloy and is melted and then the alloy is ground by an atomizing method whereby the powder of 20-100mu grain sizes is obtained. Such powder is used for formation of melt sprayed films, whereby the melt sprayed films having excellent high temp. corrosion resistance and abrasion resistance are formed.

44. 发明专利

JPS54103731A HEATING METHOD OF BLOOMS AND BILLETS FOR HOT ROLLING OF FERRITE SYSTEM STAINLESS STEEL 失效
公开(公告)号：JPS54103731A
公开(公告)日：1979-08-15
申请号：JP924578
申请日：1978-02-01
申请人： SHOWA DENKO KK
发明人： ASAKAWA ISAMU , MORIMURA TOSHIO , TSUCHIDA SHIGEO
IPC分类号： B21B3/02 , C21D6/00 , C21D8/00 , C21D9/00 , C22C38/00
摘要： PURPOSE:To prevent possible cracks in the subsequent heating and rolling through slow heating up to the impact transition temperature in relation to the thickness of steel pieces in hot rolling of blooms and billets. CONSTITUTION:Anticorrosive ferrite system stanless blooms and billets mainly composed of 27-35% Cr, 0.5-5% Mo and Fe for the rest is heated slowly up to the impact transition temperature, at a rate of more than 0.02 min./ deg.C per 10mm in the thickness. This is performed by an indirect heating or with a low temperature furnace. Then, the temperature is raised up to the given level for hot rolling. This slow heating up to the impact transition temperature can prevent the development of cracks during the hot rolling regardless of the rate of subsequent rising temperature.

45. 发明专利

JPS5486423A MANUFACTURE OF HOT ROLLED FERRITIC STAINLESS STEEL SHEET 失效
公开(公告)号：JPS5486423A
公开(公告)日：1979-07-10
申请号：JP15441577
申请日：1977-12-23
申请人： SHOWA DENKO KK
发明人： ASAKAWA ISAMU , MORIMURA TOSHIO , KUROSAWA MASAO
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46 , C21D9/52
摘要： PURPOSE:To enhance the toughness and corrosion resistance of a hot rolled ferritic stainless steel sheet by restricting the component ratio of the sheet, hot rolling condition, annealing temp. and cooling rate to make the grains fine. CONSTITUTION:In manufacture of a ferritic stainless steel sheet contg. Cr; 26- 35%, Mo; 0.5-5%, C

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