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公开(公告)号：US11951530B2
公开(公告)日：2024-04-09
申请号：US17638179
申请日：2021-04-29
发明人： Zhenbao Liu , Jianxiong Liang , Xiaohui Wang , Yongqing Sun , Changjun Wang , Zhiyong Yang
IPC分类号： B21J5/00 , B21J5/02 , C21D9/00 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , G01C19/06
CPC分类号： B21J5/002 , B21J5/02 , C21D9/0081 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , G01C19/06
摘要： A high-strength stainless steel rotor and a method for preparing the same, are provided. The high-strength stainless steel rotor, including the following element components by mass percentage: C: 0.03-0.050%, Cr: 14.90-15.80%, Ni: 5.00-5.70%, Cu: 2.20-2.80%, (Nb+Ta): 0.35-0.44%, Mo: 0.45-0.54%, V: 0.06-0.10%, Si: 0.20-0.60%, Mn: 0.40-0.80%, P≤0.010%, S≤0.010%, O≤0.003%, and the balance of iron and inevitable impurities.
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2.发明授权公开(公告)号：US12090536B2
公开(公告)日：2024-09-17
申请号：US17766664
申请日：2021-04-15
发明人： Zhenbao Liu , Xiaohui Wang , Jianxiong Liang , Yongqing Sun , Changjun Wang , Zhiyong Yang , Yuguang Gao , Jie Gao , Fuqiang Liu , Ailiang Zhang
IPC分类号： B21C23/08
CPC分类号： B21C23/085
摘要： A hot extrusion die for a special-shaped square pipe includes a die cavity sleeve with a special-shaped cavity. A hot extrusion mandrel is arranged in the die cavity sleeve. An area between the die cavity sleeve and the hot extrusion mandrel forms a die cavity hole. A first extrusion diversion hole and a second extrusion diversion hole are arranged below the die cavity hole. An integral centroid of the die cavity hole is located at a circle center of a radial cross section of the die cavity sleeve. Further disclosed is a hot extrusion integral forming method for a special-shaped square pipe, including: heating and expanding a blank material; heating the blank material again after expanding; performing hot extrusion on the blank material; and cooling the formed special-shaped square pipe in air to a room temperature, and inspecting surface quality and mechanical properties of the special-shaped square pipe.
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