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1. 发明授权

US08070888B2 High strength formed article comprising hyperfine grain structure steel and manufacturing method of the same 有权
标题翻译：包含超细晶粒结构钢的高强度成形制品及其制造方法
公开(公告)号：US08070888B2
公开(公告)日：2011-12-06
申请号：US11884948
申请日：2006-02-28
申请人： Shiro Torizuka , Eijrio Muramatsu , Kotobu Nagai
发明人： Shiro Torizuka , Eijrio Muramatsu , Kotobu Nagai
IPC分类号： C22C38/04
CPC分类号： B21K1/56 , B21K1/463 , F16B35/00 , F16B35/06
摘要： A wire rod or a steel wire of a bamboo nano-structure, whose mean grain diameter in a C-direction section is 200 nm or smaller, is prepared by applying a hot or warm working and additionally applying a cold working to a steel and next, by performing a forging, by a tool or a die such as cold pressure production, to a section, of a desired, limited site, other than a section parallel to an L-direction, an equiaxed nano-structure, whose mean grain diameter is 200 nm or smaller, is formed in this site. As a typical example of a formed article, there is enumerated a high strength micro screw in which a shaft outer diameter is 1.6 mm or smaller, a surface layer part of a head part recess has equiaxed nano-structure and a hardness Hv≧300, and a screw main body portion has bamboo nano-structure and a hardness Hv≧250.
摘要翻译：通过施加热或热加工并且另外对钢进行冷加工并制备下面的方法来制备竹形纳米结构的线形或钢丝，其平均晶粒直径在200nm以下。通过如冷压生产的工具或模具进行锻造，到除了与L方向平行的部分以外的期望的限定部位的截面，等轴的纳米结构，其平均粒径在该位置形成200nm以下。作为成形品的典型例子，列举了轴外径为1.6mm以下的高强度微型螺杆，头部凹部的表面层部分具有等轴的纳米结构，硬度Hv≥300，螺杆主体部具有竹纳米结构，硬度Hv≥250。

2. 发明申请

US20080135140A1 High Strength Formed Article Comprising Hyperfine Grain Structure Steel and Manufacturing Method of the Same 有权
标题翻译：包含超细晶粒结构钢的高强度成形品及其制造方法
公开(公告)号：US20080135140A1
公开(公告)日：2008-06-12
申请号：US11884948
申请日：2006-02-28
申请人： Shiro Torizuka , Eijrio Muramatsu , Kotobu Nagai
发明人： Shiro Torizuka , Eijrio Muramatsu , Kotobu Nagai
IPC分类号： C21D9/52 , C22C38/04
CPC分类号： B21K1/56 , B21K1/463 , F16B35/00 , F16B35/06
摘要： A wire rod or a steel wire of a bamboonano-stricture, whose mean grain diameter in a C-direction section is 200 nm or smaller, is prepared by applying a hot or warm working and additionally applying a cold working to a steel and next, by performing a forging, by a tool or a die such as cold pressure production, to a section, of a desired, limited site, other than a section parallel to an L-direction, an equiaxed nano-structure, whose mean grain diameter is 200 nm or smaller, is formed in this site. As a typical example of a formed article, there is enumerated a screw, and there is enumerated a high strength micro screw in which a shaft outer diameter is 1.6 mm or smaller, a surface layer part of a head part recess is the equiaxed nano-structure and a hardness HV≧300, and a screw main body portion is the bamboo nano-structure and a hardness Hv≧250. A constituent composition is a carbon steel of C
摘要翻译：通过施加热或热加工并另外对钢进行冷加工，制备C形截面的平均粒径为200nm以下的竹节线的线材或钢丝，接下来，通过将诸如冷压生产的工具或模具进行锻造到除了与L方向平行的部分以外的期望的限定部位的截面，其平均粒径为 200nm以下。作为成形品的典型例子，列举了螺杆，列举了轴外径为1.6mm以下的高强度微型螺杆，头部凹部的表面层部分为等轴的纳米级，结构和硬度H = 300，螺钉主体部分是竹纳米结构，硬度H = 250。组成成分为C <0.02％的碳钢，特别是不能添加强化元素。提供了一种成形制品，其具有比常规水平高的高强度，并且其中在由主体制成的成形制品中给予其主体的另外高的强度的强度达到期望的限制部位的强度线棒/钢丝通过超细晶粒制成高强度及其制造方法。

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