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公开(公告)号：US20240278322A1
公开(公告)日：2024-08-22
申请号：US18569301
申请日：2021-06-17
申请人： ArcelorMittal
CPC分类号： B22F9/082 , B05B7/066 , B05B15/65 , B22F2009/088
摘要： A method to quickly change a nozzle assembly suitable for use in a liquid metal atomizing process in which a liquid metal held in a liquid metal reservoir and exiting said metal reservoir through a reservoir opening is atomized by an atomizing fluid to form a metallic spray in an atomizing tower. A sliding nozzle assembly system in which replacement nozzles can be changed on the fly during production.
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公开(公告)号：US20240269704A1
公开(公告)日：2024-08-15
申请号：US18569350
申请日：2021-06-17
申请人： ArcelorMittal
CPC分类号： B05B15/65 , B05B7/066 , B22F9/082 , B22F2009/0892
摘要： A method to quickly change a nozzle assembly suitable for use in a liquid metal atomizing process in which a liquid metal held in a liquid metal reservoir and exiting said metal reservoir through a reservoir opening is atomized by an atomizing fluid to form a metallic spray in an atomizing tower. A sliding nozzle assembly system in which replacement nozzles can be changed on the fly during production. A nozzle assembly designed to be used in conjunction with a support structure. Said nozzle assembly and support structure being designed for use in a nozzle change equipment according.
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公开(公告)号：US20240246145A1
公开(公告)日：2024-07-25
申请号：US18287106
申请日：2021-04-21
申请人： ArcelorMittal
CPC分类号： B22F9/082 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , B22F2009/0848 , B22F2009/0888
摘要： A process for the production of steel powders including the steps of: providing molten iron from a blast furnace, refining the molten iron in a converter to form molten steel, refining the molten steel in a vacuum arc degasser to obtain a refined molten steel comprising from 20 to less than 600 ppm C, from 15 to less than 120 ppm S, up to 125 ppm P, up to 80 ppm N and up to 30 ppm O, pouring in a plurality of induction furnaces, adding at least one ferroalloy, pouring the molten steel of each induction furnace in a dedicated reservoir connected to at least one gas atomizer, feeding the at least one gas atomizer of each reservoir in molten steel from each reservoir under pressure and gas atomizing the molten steel to form the steel powder at the desired composition.
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公开(公告)号：US20240165704A1
公开(公告)日：2024-05-23
申请号：US18283774
申请日：2021-04-06
申请人： ArcelorMittal
CPC分类号： B22F9/082 , C21C5/5241 , C21C7/0006 , C21C7/068 , C21C7/10 , C22C33/06 , B22F2009/0824 , B22F2009/0848 , B22F2301/35 , B22F2998/10 , B33Y70/00
摘要： A process for the production of steel powders including the steps of: providing molten iron from a blast furnace, refining the molten iron in a converter to form molten steel including up to 600 ppm C, up to 120 ppm S, up to 125 ppm P, up to 50 ppm N and up to 1200 ppm O, pouring the molten steel in a plurality of induction furnaces, adding, in each of the plurality of induction furnaces, at least one ferroalloy to adjust the steel composition, pouring the molten steel at the desired composition of each induction furnace in a dedicated reservoir connected to at least one gas atomizer, feeding the at least one gas atomizer of each reservoir in molten steel from each reservoir under pressure and gas atomizing the molten steel to form the steel powder at the desired composition.
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