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公开(公告)号：US20220097123A1
公开(公告)日：2022-03-31
申请号：US17528343
申请日：2021-11-17
发明人： Jing ZHANG , Jinwu MIAO , Yanpei SHI , Kai WANG , Zhimin CHEN , Yang DING , Guojin ZHANG
摘要： A method for forming a QCr0.8 alloy tapered cylindrical ring, including: heating a standard QCr0.8 alloy cylindrical part followed by upsetting and stretching at least twice to obtain a primary blank; heating the primary blank followed by upsetting and chamfering to obtain a secondary blank, where a diameter of a top end is greater than that of a bottom end; subjecting the secondary blank to backward extrusion to form a preform; machining the preform to remove a flash and a bottom residue; subjecting a bottom end of the preform to local bulging to enable a shape and a size thereof to match that of a drive roller in a forming tooling, so as to form a profiled ring blank; and rolling the profiled ring blank by a radial-axial ring rolling machine with the forming tooling to form the tapered cylindrical ring.
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公开(公告)号：US20220126355A1
公开(公告)日：2022-04-28
申请号：US17558882
申请日：2021-12-22
发明人： Kai WANG , Youqiang LIU , Peng ZHANG , Jinwu MIAO , Zhimin CHEN , Yang XIE , Xiaoming WU
摘要： A method for forging a niobium-tungsten alloy forged ring, including: (S1) subjecting an alloy ingot to turning, chamfering, spraying with an anti-oxidation coating, stainless-steel sheathing, heating and upsetting to obtain a primary pancake with a flat-die hammer, rapid-forging press or hydraulic press; (S2) subjecting an inner pole to wire electrical discharge machining to obtain a ring blank followed by machining to remove the stainless-steel sheath and oxide scale and defects; and subjecting the ring blank to fluorescent/dye penetrant inspection followed by vacuum stress-relief annealing; (S3) subjecting the ring blank to core shaft/saddle forging on the flat-die hammer or rapid-forging press to obtain a crude forged ring; and (S4) subjecting the crude forged ring to vacuum recrystallization annealing to obtain a desired forged ring.
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