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公开(公告)号：US11110686B2
公开(公告)日：2021-09-07
申请号：US16612817
申请日：2017-05-16
IPC分类号： B32B15/01 , B21D22/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/32
摘要： The invention relates to a hot-forming material composed of a three-layer composite material, comprising a core layer of a hardenable steel which in the press-hardened state of the hot-forming material has a tensile strength >1900 MPa and/or a hardness >575 HV10. Two outer layers are bonded substance-to-substance with the core layer and composed of a steel which is softer in comparison with the core layer and which in the press-hardened state of the hot-forming material have a tensile strength >750 MPa and/or a hardness >235 HV10. The invention further relates to a component and also to a corresponding use.
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公开(公告)号：US10272644B2
公开(公告)日：2019-04-30
申请号：US15105679
申请日：2014-12-19
IPC分类号： B32B15/01 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/38 , C22C38/28 , C22C38/00 , C22C38/26 , C22C38/32
摘要： A flat steel product is disclosed which is particularly suitable for the production of components for motor vehicle bodies by press-hardening, and which has insensitivity to cracking coupled with increased strength and has sufficient suitability for welding for incorporation into a welded construction. This combination of properties is achieved in accordance with the invention by virtue of the flat steel product having a core layer consisting of a steel alloyed with Mn, B and at least 0.3% by weight of C and having a tensile strength of more than 1500 MPa, and an outer layer cohesively bonded to the core layer. The C content of the outer layer is not more than 0.09% by weight. This flat steel product has, in the region of the outer layer, a tensile strength corresponding to not more than half the tensile strength of the steel of the core layer in the ready-hardened state, with the elongation A80 of the outer layer corresponding to at least 1.5 times the elongation A80 of the core layer in the ready-hardened state.
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公开(公告)号：US10525669B2
公开(公告)日：2020-01-07
申请号：US15554827
申请日：2016-02-23
IPC分类号： B23K20/00 , B32B15/01 , B23K20/04 , B23K20/227 , B23K20/24 , B23K31/02 , B32B15/18 , B21B1/38 , B23K101/16 , B23K101/18 , B23K103/04
摘要： A method for producing a composite material, particularly a steel composite material, may involve providing a first workpiece and a second workpiece, producing a bonded connection between said first and said second workpiece in order to form a provisional composite, and rolling said provisional composite in order to form the composite material. During the rolling, the bonded connection may be at least partially released, in the form of a predetermined breaking point. The rolling may be performed as hot rolling. Further, the method may involve substantially hermetically sealing the provisional composite by way of a sealant. The first and second work pieces, moreover, may be peripherally connected by way of the bonded connection along an edge area of a contact surface formed by the first and second work pieces.
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公开(公告)号：US10710132B2
公开(公告)日：2020-07-14
申请号：US15763886
申请日：2016-09-14
IPC分类号： B21B3/02 , B21B37/24 , B32B15/01 , B32B15/18 , C21D1/673 , C22C21/02 , C22C38/28 , C22C38/32 , B32B7/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54
摘要： A method for producing a semifinished product with locally different material thicknesses may involve preparing a multilayer, metal material composite, which has a plurality of layers with different ductilities, and rolling the material composite in a method for flexible rolling through a rolling gap formed between two rollers. The rolling gap may be configured such that regions with different material thicknesses are formed. In some cases, the multilayer, metal material composite is rolled at room temperature. Further, the plurality of layers of the multilayer, metal material composite may include a first outer layer disposed on a first side of a middle layer and a second outer layer disposed on a second side of the middle layer, with the second side of the middle layer being opposite the first side.
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公开(公告)号：US10450624B2
公开(公告)日：2019-10-22
申请号：US14903551
申请日：2013-07-24
IPC分类号： C21D9/46 , B22D11/06 , B22D11/12 , C22F1/00 , C22C38/00 , C22C38/34 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/58 , B21B1/46 , B22D11/00 , B22D11/041 , C21D6/00 , C21D8/02 , C22C38/42
摘要： Methods for producing a flat product from an iron-based shape memory alloy may involve casting a melt comprised of iron, alloying elements, and impurities into a strip having a thickness of 1-30 mm and cooling the melt as the strip is formed. A twin-roll caster may be employed to help cool and form the melt into the strip. The resultant flat product is highly resistant to bending and is robust under pressure and torsion.
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6.发明申请Sheet Steel Product, A Steel Component Produced From Such a Sheet Steel Product, and Body for a Motor Vehicle 审中-公开板钢产品，由这种钢板产品生产的钢部件和机动车辆公开(公告)号：US20160311197A1
公开(公告)日：2016-10-27
申请号：US15105679
申请日：2014-12-19
IPC分类号： B32B15/01 , C22C38/28 , C22C38/00 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/32 , C22C38/26
CPC分类号： B32B15/011 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38
摘要： A flat steel product is disclosed which is particularly suitable for the production of components for motor vehicle bodies by press-hardening, and which has insensitivity to cracking coupled with increased strength and has sufficient suitability for welding for incorporation into a welded construction. This combination of properties is achieved in accordance with the invention by virtue of the flat steel product having a core layer consisting of a steel alloyed with Mn, B and at least 0.3% by weight of C and having a tensile strength of more than 1500 MPa, and an outer layer cohesively bonded to the core layer. The C content of the outer layer is not more than 0.09% by weight. This flat steel product has, in the region of the outer layer, a tensile strength corresponding to not more than half the tensile strength of the steel of the core layer in the ready-hardened state, with the elongation A80 of the outer layer corresponding to at least 1.5 times the elongation A80 of the core layer in the ready-hardened state.
摘要翻译： 公开了一种扁钢产品，其特别适用于通过加压硬化生产机动车辆的部件，并且其具有对增加的强度的破裂的不敏感性并且具有足够的焊接适合性以适用于焊接结构。 根据本发明，通过具有由与Mn，B合金的钢和至少0.3重量％C的钢构成的芯层的平坦钢产品实现了这种性能的组合，并且具有大于1500MPa的拉伸强度 ，和外层粘结在芯层上。 外层的C含量不超过0.09重量％。 该扁钢制品在外层的区域具有对应于在预硬化状态下芯层的钢的拉伸强度的不超过一半的拉伸强度，外层的伸长率A80对应于 在预硬化状态下至少1.5倍的芯层的伸长率A80。
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