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1.发明授权Steel wire rod for high strength and high toughness spring having excellent cold workability, method for producing the same and method for producing spring by using the same 有权用于具有优异的冷加工性的高强度和高韧性弹簧的钢丝杆及其制造方法和使用该弹簧的方法公开(公告)号：US08734599B2
公开(公告)日：2014-05-27
申请号：US12445004
申请日：2007-10-10
申请人： Sang Woo Choi , Hoe Young Jung , Yong Tae Shin , Duk Lak Lee , Jeong Do Seo , Jay Hyung Jung , Byoung Ju Park , Jae Seung Lee
发明人： Sang Woo Choi , Hoe Young Jung , Yong Tae Shin , Duk Lak Lee , Jeong Do Seo , Jay Hyung Jung , Byoung Ju Park , Jae Seung Lee
摘要： Provided is a steel wire rod for a high strength and high toughness spring having excellent cold workability, the steel wire rod having a composition comprising: in weight %, C: 0.4 to 0.7%, Si: 1.5 to 3.5%, Mn: 0.3 to 1.0%, Cr: 0.01 to 1.5%, Ni: 0.01 to 1.0%, Cu: 0.01 to 1.0%, B: 0.005 to 0.02%, Al: 0.1% or less, O: 0.0020% or less, P: 0.02% or less, S: 0.02% or less, N: 0.02% or less, remainder Fe, and other unavoidable impurities, having a microstructure formed of ferrite and pearlite, and in which a prior (before cooling) austenite grain size is 8 μm or less.
摘要翻译： 本发明提供一种具有优异的冷加工性的高强度高韧性弹簧用钢丝棒，其特征在于，所述钢线材的组成为：重量％，C：0.4〜0.7％，Si：1.5〜3.5％，Mn：0.3〜 1.0％，Cr：0.01〜1.5％，Ni：0.01〜1.0％，Cu：0.01〜1.0％，B：0.005〜0.02％，Al：0.1％以下，O：0.0020％以下，P：0.02％ S：0.02％以下，N：0.02％以下，余量为Fe，其他不可避免的杂质，具有由铁素体和珠光体组成的组织，其中先（冷却前）奥氏体晶粒度为8μm以下 。
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2.发明申请Steel Wire Rod for High Strength and High Toughness Spring Having Excellent Cold Workability, Method for Producing the Same and Method for Producing Spring by Using the Same 有权用于具有优异的冷加工性的高强度和高韧性弹簧的钢丝杆及其制造方法和使用该弹簧的方法公开(公告)号：US20100175795A1
公开(公告)日：2010-07-15
申请号：US12445004
申请日：2007-10-10
申请人： Sang Woo Choi , Hoe Young Jung , Yong Tae Shin , Duk Lak Lee , Jeong Do Seo , Jay Hyung Jung , Byoung Ju Park , Jae Seung Lee
发明人： Sang Woo Choi , Hoe Young Jung , Yong Tae Shin , Duk Lak Lee , Jeong Do Seo , Jay Hyung Jung , Byoung Ju Park , Jae Seung Lee
摘要： Provided is a steel wire rod for a high strength and high toughness spring having excellent cold workability, the steel wire rod having a composition comprising: in weight %, C: 0.4 to 0.7%, Si: 1.5 to 3.5%, Mn: 0.3 to 1.0%, Cr: 0.01 to 1.5%, Ni: 0.01 to 1.0%, Cu: 0.01 to 1.0%, B: 0.005 to 0.02%, Al: 0.1% or less, O: 0.0020% or less, P: 0.02% or less, S: 0.02% or less, N: 0.02% or less, remainder Fe, and other unavoidable impurities, having a microstructure formed of ferrite and pearlite, and in which a prior (before cooling) austenite grain size is 8 μm or less.
摘要翻译： 本发明提供一种具有优异的冷加工性的高强度高韧性弹簧用钢丝棒，其特征在于，所述钢线材的组成为：重量％，C：0.4〜0.7％，Si：1.5〜3.5％，Mn：0.3〜 1.0％，Cr：0.01〜1.5％，Ni：0.01〜1.0％，Cu：0.01〜1.0％，B：0.005〜0.02％，Al：0.1％以下，O：0.0020％以下，P：0.02％ S：0.02％以下，N：0.02％以下，余量为Fe，其他不可避免的杂质，具有由铁素体和珠光体组成的组织，其中先（冷却前）奥氏体晶粒度为8μm以下 。
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3.发明申请公开(公告)号：US20110247734A1
公开(公告)日：2011-10-13
申请号：US13141099
申请日：2009-12-28
申请人： Jae-Seung Lee , Sang-Yoon Lee , Hoe-Young Jung , Byoung-Ju Park
发明人： Jae-Seung Lee , Sang-Yoon Lee , Hoe-Young Jung , Byoung-Ju Park
IPC分类号： C21D6/00 , C22C38/04 , C22C38/06 , C22C38/48 , C22C38/14 , C22C38/42 , C22C38/46 , C22C38/02 , C22C38/12
摘要： Decarburization-restrained steel and manufacturing method thereof are disclosed. Steel includes a boron (B)-concentrated layer formed on its surface to prevent carbon of the steel from being in contact with oxygen in atmosphere to thus restrain decarburization of the steel. The steel includes a boron-concentrated layer with a thickness of 3 mm or larger formed on the surface of the steel. The method of manufacturing decarburization-restrained steel includes cooling steel containing 0.001 wt % to 0.02 wt % of boron (B) at a cooling speed of 0.5° C./s to 25° C./s at an austenite+ferrite two-phase region.
摘要翻译： 脱碳钢抑制钢及其制造方法。 钢包括在其表面上形成的硼（B） - 富集层，以防止钢中的碳与大气中的氧接触，从而抑制钢的脱碳。 该钢包含形成在钢表面上的厚度为3mm以上的硼浓缩层。 制造脱碳抑制钢的方法包括：以奥氏体+铁素体相的0.5℃/秒〜25℃/秒的冷却速度含有0.001重量％〜0.02重量％的硼（B）的冷却钢 地区。
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