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1.发明申请METHOD FOR PRODUCING HOT ROLLED HOLLOW SECTIONS HAVING A RECTANGULAR CROSS-SECTION AND SMALL EDGE RADII 有权用于生产具有矩形横截面和小边缘RADII的热轧中空部分的方法公开(公告)号：US20120244372A1
公开(公告)日：2012-09-27
申请号：US13393030
申请日：2010-08-12
CPC分类号： B21C37/15 , B21D3/14 , B21D47/01 , B66C23/286 , B66C23/62 , Y10T428/12292
摘要： In a method for producing hot-rolled sections of steel with a rectangular or square cross-section, a substantially round pipe blank produced seamlessly by hot rolling or cold finished and welded and having a defined nominal outside diameter is initially produced and then formed at a forming temperature into a hollow section having the required cross-section, with visible edges C1 and C2 of the hollow section having a value ≦1.5×t (t=wall thickness). The pipe blank has a nominal outer diameter determined from a reduction ratio of the pipe blank to be achieved and the hollow section dimensions to be achieved, wherein the reduction ration lies within a range of −2% to −13% and is determined according to the following formula: Reduction ratio R[%]=[(2×(H+B))−π×D]×100%/[2×(H+B)].
摘要翻译： 在用于制造具有矩形或正方形横截面的钢的热轧部分的方法中，最初产生通过热轧或冷加工无缝地制造并且具有限定的标称外径的基本圆形的管坯，然后形成在 形成具有所需横截面的中空部分，中空部分的可见边缘C1和C2具有值n1E; 1.5×t（t =壁厚）。 管坯的标称外径由要实现的管坯的减速比和要实现的中空截面尺寸确定，其中所述还原比在-2％至-13％的范围内，并且根据 下式：还原比R [％] = [（2×（H + B）） - ＆pgr×D]×100％/ [2×（H + B）]。
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2.发明授权Method for producing hot rolled hollow sections having a rectangular cross-section and small edge radii 有权用于生产具有矩形横截面和小边缘半径的热轧中空部分的方法公开(公告)号：US09056344B2
公开(公告)日：2015-06-16
申请号：US13393030
申请日：2010-08-12
CPC分类号： B21C37/15 , B21D3/14 , B21D47/01 , B66C23/286 , B66C23/62 , Y10T428/12292
摘要： In a method for producing hot-rolled sections of steel with a rectangular or square cross-section, a substantially round pipe blank produced seamlessly by hot rolling or cold finished and welded and having a defined nominal outside diameter is initially produced and then formed at a forming temperature into a hollow section having the required cross-section, with visible edges C1 and C2 of the hollow section having a value ≦1.5×t (t=wall thickness). The pipe blank has a nominal outer diameter determined from a reduction ratio of the pipe blank to be achieved and the hollow section dimensions to be achieved, wherein the reduction ration lies within a range of −2% to −13% and is determined according to the following formula: Reduction ratio R[%]=[(2×(H+B))−π×D]×100%/[2×(H+B)].
摘要翻译： 在用于制造具有矩形或正方形横截面的钢的热轧部分的方法中，最初产生通过热轧或冷加工无缝地制造并且具有限定的标称外径的基本圆形的管坯，然后形成在 形成具有所需横截面的中空部分，中空部分的可见边缘C1和C2具有值n1E; 1.5×t（t =壁厚）。 管坯的标称外径由要实现的管坯的减速比和要实现的中空截面尺寸确定，其中所述还原比在-2％至-13％的范围内，并且根据 下式：还原比R [％] = [（2×（H + B）） - ＆pgr×D]×100％/ [2×（H + B）]。
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