EP3219419A1 - Dispositif d'atomisation à très faible teneur en oxygène, scellé semi-chimique et semi-mécanique - Google Patents

Dispositif d'atomisation à très faible teneur en oxygène, scellé semi-chimique et semi-mécanique Download PDF

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Publication number
EP3219419A1
EP3219419A1 EP15786038.8A EP15786038A EP3219419A1 EP 3219419 A1 EP3219419 A1 EP 3219419A1 EP 15786038 A EP15786038 A EP 15786038A EP 3219419 A1 EP3219419 A1 EP 3219419A1
Authority
EP
European Patent Office
Prior art keywords
oxygen content
chamber
atomization
smelting chamber
mechanical seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15786038.8A
Other languages
German (de)
English (en)
Other versions
EP3219419A4 (fr
Inventor
Lixin Shi
Jianchong SHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3219419A1 publication Critical patent/EP3219419A1/fr
Publication of EP3219419A4 publication Critical patent/EP3219419A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
    • B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water

Definitions

  • the invention generally relates to a water atomization equipment, especially a water atomization or water-vapor atomization equipment.
  • This invention which is used for preparing metal or alloy powder is related to the field of powder metallurgy. Compared with other designs in China, a water atomization equipment in accordance with this invention is safer and the oxygen content of the powder produced by the invention is in the range of 50 to 500 ppm.
  • this invention applies semi-chemical method (such as eject reducing gas like CO, inert gas or vacuumizing, where the last two method has relatively high oxygen content compared with the first method) and mechanical seal method to reduce the oxygen content.
  • the mechanical seal method could completely separate the smelting chamber and the atomizing chamber.
  • the special mechanical seal method could allow metal drops to enter the atomization chamber meanwhile prevent water vapor and so on from entering the smelting chamber to avoid explosion. As the smelting chamber can be completely separated from the externalair and the smelting chamber and atomization chamber is separated(as shown in Fig.
  • the oxygen content of the powder produced by the equipment is reduced by nearly an order of magnitude lower than the powder produced by the equipment mentioned before has.
  • the oxygen content of the powder is in the range of 50 to 500 ppm.
  • Fig.1-1 and Fig.1-2 is the top view and the side view of the open-type water atomization equipment, respectively.
  • the middle circle part is the smelting crucible. It can be found that the smelting crucible is directly in touch with the external air. Therefore, the powder produced by this method has high oxygen content.
  • Fig.2-1 is the top view of the close-type water atomization equipment and Fig.2-2 is the side view of the close-type water atomization equipment.
  • the smelting crucible has a cover on the top to separate smelting crucible from the external air. However, this method cannot separate the smelting chamber from the externalair completely.
  • Fig.3 is the water atomization equipment mentioned in this invention.
  • Fig.3-1 and Fig.3-2 is the top view and the side view of the invention, respectively.
  • the whole smelting equipment is put into a closure container. By vacuumizing and ejecting reducing gas or inert gas, the smelting chamber is separated from external air as well as the atomizing chamber. Meanwhile, the reducing gas would reduce the oxygen content. Therefore, the powder produced by the equipment has the lowest oxygen content.
  • the reducing gas used in the embodiments is CO and NH 3 , respectively.
  • the reducing gas included in this patent is not limited to the above two.

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  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
EP15786038.8A 2014-04-30 2015-04-02 Dispositif d'atomisation à très faible teneur en oxygène, scellé semi-chimique et semi-mécanique Withdrawn EP3219419A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410188894.1A CN105014086A (zh) 2014-04-30 2014-04-30 半化学半机械密封式超低氧含量雾化设备
PCT/CN2015/000230 WO2015165278A1 (fr) 2014-04-30 2015-04-02 Dispositif d'atomisation à très faible teneur en oxygène, scellé semi-chimique et semi-mécanique

Publications (2)

Publication Number Publication Date
EP3219419A1 true EP3219419A1 (fr) 2017-09-20
EP3219419A4 EP3219419A4 (fr) 2019-02-27

Family

ID=54358136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15786038.8A Withdrawn EP3219419A4 (fr) 2014-04-30 2015-04-02 Dispositif d'atomisation à très faible teneur en oxygène, scellé semi-chimique et semi-mécanique

Country Status (4)

Country Link
EP (1) EP3219419A4 (fr)
CN (1) CN105014086A (fr)
AU (1) AU2015252653A1 (fr)
WO (1) WO2015165278A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746648A (zh) * 2018-07-10 2018-11-06 北京中材人工晶体研究院有限公司 一种合成金刚石用合金触媒粉末的装备及工艺

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2384892A (en) * 1942-05-28 1945-09-18 F W Berk & Company Method for the comminution of molten metals
US4385929A (en) * 1981-06-19 1983-05-31 Sumitomo Metal Industries Limited Method and apparatus for production of metal powder
US5084091A (en) * 1989-11-09 1992-01-28 Crucible Materials Corporation Method for producing titanium particles
JP2001271103A (ja) * 2000-03-28 2001-10-02 Fuji Electric Co Ltd 金属粉末作製方法
CN1410208B (zh) * 2002-11-25 2011-01-19 莱芜钢铁集团粉末冶金有限公司 水雾化合金钢粉的制造方法
CN1475318A (zh) * 2003-01-27 2004-02-18 李文漫 金属粉真空气体喷粉装置
JP2006063357A (ja) * 2004-08-24 2006-03-09 Daido Steel Co Ltd 水アトマイズ法による金属粉末の製造方法
CN2855596Y (zh) * 2004-10-26 2007-01-10 上海申建冶金机电技术有限公司 全连续真空氩熔炼高压隋性气体雾化制粉装置
US20060291529A1 (en) * 2005-05-26 2006-12-28 Haun Robert E Cold wall induction nozzle
US8778098B2 (en) * 2008-12-09 2014-07-15 United Technologies Corporation Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids
CN103611942B (zh) * 2013-12-10 2015-10-14 河北联合大学 高压熔炼雾化氮淬装置及其生产钐铁氮合金粉末的方法
CN104232898B (zh) * 2014-07-21 2016-10-05 湖南久泰冶金科技有限公司 一种连续化生产的真空或气体保护冶炼浇注设备

Also Published As

Publication number Publication date
WO2015165278A1 (fr) 2015-11-05
AU2015252653A1 (en) 2017-01-05
CN105014086A (zh) 2015-11-04
EP3219419A4 (fr) 2019-02-27

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