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1. 发明授权

US06479013B1 Casting components made from a tool steel 失效
标题翻译：由工具钢制成的铸件
公开(公告)号：US06479013B1
公开(公告)日：2002-11-12
申请号：US09635620
申请日：2000-08-10
申请人： Tomoaki Sera , Masahide Umino , Kunio Kondo
发明人： Tomoaki Sera , Masahide Umino , Kunio Kondo
IPC分类号： C22C3824
CPC分类号： C22C38/42 , B22D17/2023 , B22D17/203 , B22D17/2209 , B22D17/2236 , C21D1/76 , C21D6/002 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/52 , Y10T428/12979
摘要： A method of casting non-ferrous metals such as aluminum, magnesium, or zinc alloys uses casting components made from a tool steel comprising effective amounts of carbon, silicon, manganese, chromium, molybdenum, and vanadium, optional amounts of cobalt and increased level of molybdenum. Using the tool steel as a casting component, particularly as a mold, provides improvements in corrosion resistance, oxidation resistance, softening resistance, degradation resistance and deformation resistance. The tool steel casting component has a chromium oxide layer which is formed, in one mode, during the casting operation, to enhance the life and durability of the casting component and improve its casting performance.
摘要翻译：铸造有色金属如铝，镁或锌合金的方法使用由工具钢制成的铸造组件，其包含有效量的碳，硅，锰，铬，钼和钒，任选量的钴和增加的钼。使用工具钢作为铸造部件，特别是作为模具，提供耐腐蚀性，抗氧化性，耐软化性，耐劣化性和抗变形性的改进。工具钢铸造部件具有在铸造操作期间以一种模式形成的氧化铬层，以提高铸造部件的寿命和耐久性并提高其铸造性能。

2. 发明授权

US06478898B1 Method of producing tool steels 有权
标题翻译：生产工具钢的方法
公开(公告)号：US06478898B1
公开(公告)日：2002-11-12
申请号：US09664766
申请日：2000-09-19
申请人： Tomoaki Sera , Masahide Umino , Yasutaka Okada , Kunio Kondo
发明人： Tomoaki Sera , Masahide Umino , Yasutaka Okada , Kunio Kondo
IPC分类号： C21D1100
CPC分类号： C21D1/25 , C21D6/004 , C22C38/06 , C22C38/44 , C22C38/46
摘要： A method of producing a tool steel comprises quenching a steel containing, by mass percent, C: 0.25 to 0.60%, Si: 0.10 to 1.20%, Mn: 0.20 to 1.50%, Ni: 0.50 to 2.00%, Cr: 1.00 to 4.20%, Mo: 0.30 to 2.00%, V: 0.10 to 1.00% and Al: 0.005 to 0.10%, in order to obtain a hardness H such that the hardness index defined below by the formula (1) becomes between 0.20 to 0.95; and then tempering the steel; K=(H−H2)/(H1−H2) (1) Where H1: Vickers hardness of the steel with 10 mm thickness after heating to a temperature of the Ac3 transformation point plus 50° C., and quenching into water; H2: Vickers hardness of the steel with 10 mm thickness after heating to the same temperature as defined above, and cooling to room temperature over 20 hours.
摘要翻译：制造工具钢的方法包括以质量％计含有C：0.25〜0.60％，Si：0.10〜1.20％，Mn：0.20〜1.50％，Ni：0.50〜2.00％，Cr：1.00〜4.20 ％，Mo：0.30〜2.00％，V：0.10〜1.00％，Al：0.005〜0.10％，以获得如下式（1）所示的硬度指数为0.20〜0.95的硬度H; 然后回火钢;其中H1：加热后的厚度为10mm的钢的维氏硬度到Ac3相变点的温度加上50℃，淬火成水; H2：厚度为10mm的钢的维氏硬度加热到与上述相同的温度，并在20小时内冷却至室温。

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