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1.发明申请公开(公告)号：US20180345355A1
公开(公告)日：2018-12-06
申请号：US15865231
申请日：2018-01-08
发明人： Feibo Wang , Jiandong Xu , Shengxiang Liu , Zhenhua Qi , Chunlei Xu , Yue Huang
摘要： A heating/heat-retaining device, particularly to a heating/heat-retaining device used in the forging process, and more particularly to an opening-and-closing type heater and a wind generator shaft forging process using the same. The opening-and-closing type heater comprises a base, a tube body mounted on the base and a tube body opening-and-closing mechanism; the tube body comprises a fixed tube body and a movable tube body, the fixed tube body and the movable tube body are arc-shaped shells, and form a hollow shape when the openings thereof match with each other; the tube body opening-and-closing mechanism is connected to the movable tube body for realizing the opening-and-closing of the movable tube body and the fixed tube body. The invention solves heat retaining and heating problems during the forging process of the main shaft forgings and avoids internal defects due to rapid temperature drop of the main shaft forgings.
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公开(公告)号：US10316384B2
公开(公告)日：2019-06-11
申请号：US15402219
申请日：2017-01-09
发明人： Zhenhua Qi , Shengyi Ma , Shengxiang Liu , Zhenwei Yan
IPC分类号： C21D9/08 , C22C38/44 , B22D7/00 , B22D29/00 , C22C38/22 , C22C38/04 , C21D8/10 , B21J5/02 , F03D80/80 , B21J5/08 , B21J5/10 , B21K1/06 , B21K1/10 , F03D15/00
摘要： A hollow forging process for main shaft of large wind turbine generator, wherein, comprising the following steps as: the first step of cutting off the dead head and the bottom of an ingot; the second step of upsetting and punching a hole; the third step of drawing-out; and the fourth step of local upsetting, drawing-out and shaping-up. In the fourth step, the forged piece is shaped up by local upsetting and drawing-out through a turnplate. The hollow forging process for main shaft created by the invention can save the costs for enterprise to purchase large equipment and makes it possible to forge the main shaft of large wind turbine generator with a free forging oil press with a smaller size.
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公开(公告)号：US11097335B2
公开(公告)日：2021-08-24
申请号：US15865231
申请日：2018-01-08
发明人： Feibo Wang , Jiandong Xu , Shengxiang Liu , Zhenhua Qi , Chunlei Xu , Yue Huang
摘要： A heating/heat-retaining device, particularly to a heating/heat-retaining device used in the forging process, and more particularly to an opening-and-closing type heater and a wind generator shaft forging process using the same. The opening-and-closing type heater comprises a base, a tube body mounted on the base and a tube body opening-and-closing mechanism; the tube body comprises a fixed tube body and a movable tube body, the fixed tube body and the movable tube body are arc-shaped shells, and form a hollow shape when the openings thereof match with each other; the tube body opening-and-closing mechanism is connected to the movable tube body for realizing the opening-and-closing of the movable tube body and the fixed tube body. The invention solves heat retaining and heating problems during the forging process of the main shaft forgings and avoids internal defects due to rapid temperature drop of the main shaft forgings.
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公开(公告)号：US20180057904A1
公开(公告)日：2018-03-01
申请号：US15402219
申请日：2017-01-09
发明人： Zhenhua Qi , Shengyi Ma , Shengxiang Liu , Zhenwei Yan
IPC分类号： C21D9/08 , C22C38/44 , B22D7/00 , B22D29/00 , C22C38/22 , C22C38/04 , C21D8/10 , B21J5/02 , F03D80/80
CPC分类号： C21D9/08 , B21J5/02 , B21J5/022 , B21J5/08 , B21J5/10 , B21K1/063 , B21K1/10 , B22D7/00 , B22D29/00 , C21D8/105 , C22C38/04 , C22C38/22 , C22C38/44 , F03D15/00 , F03D80/88 , F05B2230/10 , F05B2230/25 , F05B2240/61 , Y02E10/72 , Y02P70/523
摘要： A hollow forging process for main shaft of large wind turbine generator, wherein, comprising the following steps as: the first step of cutting off the dead head and the bottom of an ingot; the second step of upsetting and punching a hole; the third step of drawing-out; and the fourth step of local upsetting, drawing-out and shaping-up. In the fourth step, the forged piece is shaped up by local upsetting and drawing-out through a turnplate. The hollow forging process for main shaft created by the invention can save the costs for enterprise to purchase large equipment and makes it possible to forge the main shaft of large wind turbine generator with a free forging oil press with a smaller size.
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