CN105014086A - Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit - Google Patents

Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit Download PDF

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Publication number
CN105014086A
CN105014086A CN201410188894.1A CN201410188894A CN105014086A CN 105014086 A CN105014086 A CN 105014086A CN 201410188894 A CN201410188894 A CN 201410188894A CN 105014086 A CN105014086 A CN 105014086A
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CN
China
Prior art keywords
chamber
oxygen content
gas
atomizing
equipment
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Pending
Application number
CN201410188894.1A
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Chinese (zh)
Inventor
施立新
施涧翀
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to CN201410188894.1A priority Critical patent/CN105014086A/en
Priority to EP15786038.8A priority patent/EP3219419A4/en
Priority to AU2015252653A priority patent/AU2015252653A1/en
Priority to PCT/CN2015/000230 priority patent/WO2015165278A1/en
Publication of CN105014086A publication Critical patent/CN105014086A/en
Pending 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

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  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The invention relates to an atomizing unit, in particular to a water atomization or steam atomization device for preparing metal and alloy powder, and belongs to the technical field of powder metallurgy equipment. By the adoption of the water atomizing unit, compared with national water atomizing units domestically at present, the atomizing unit has the beneficial effects that safety is achieved, and the oxygen content of the produced powder ranges from 50 ppm to 500 ppm. The atomizing unit is characterized in that the semi-chemical manner such as addition of CO and other reduction gas and the semi-mechanical sealed manner such as a movable partition plate are adopted so as to decrease the oxygen content of a smelting chamber; the adopted mechanical sealed manner can completely separate the smelting chamber and an atomizing chamber; according to the sealed manner, a metal solution is allowed to enter the atomizing chamber and steam can be prevented from entering the smelting chamber, and possible explosions are avoided; meanwhile, steam in the atomizing chamber is prevented from entering the smelting chamber so as to avoid vacuumizing; a smelting unit is arranged in a sealed container, then all air in the container is pumped away in a vacuumizing manner, and inert gas or reduction gas is adopted for protection if necessary.

Description

Half chemical half Mechanical Sealed Type ultra low oxygen content atomization plant
Technical field
The present invention relates to a kind of atomization plant, particularly relate to a kind of water atomization or aqueous vapor atomization plant, for the preparation of metal and alloy powder, belong to power metallurgy equipment technical field.Adopt water atomization equipment of the present invention, compared with water atomization equipment domestic at present, have safety, its oxygen content of the powder produced has the feature between 50 to 500ppm.
Background technology
Low oxygen content water atomization equipment is shown in bibliographical information.The manufacture method (patent No.: CN02149116.x) of the alloy steel powder by spraying etc. of people's invention such as the sci-tech novelty retrieval report GN2012fj161 according to Scientific and Technical Information Institute of Fujian Province provides: Powder Metallurgy Co. Ltd., Laiwu Iron and Steel Group Corp. Li Puming, in water atomization, dry, high temperature reduction operation all takes inert gas shielding measure, be conducive to controlling the oxygen content in product, thus make this manufacture method that Control for Oxygen Content still can be made about 0.15% when not adopting vacuum annealing furnace process, produce high-quality final products, simplify production operation program, save investment, reduce cost.The iron powder of the hydraulic atomization of Kawasaki, Japan Zhi Tie limited company invention and method for making (patent No.: TW083104452) thereof, its obtained product oxygen content system about 1.0wt%.
The water atomization equipment produced in domestic market can be divided into two classes.One is called open type, and another kind is closed.Manufacturer is respectively Hunan Thailand and Handan Lan De etc. for a long time.The method (patent No.: CN201110076808.4) of the fine prealloy powder of low oxygen content is prepared in the high-pressure water gas combination atomization of Changsha Tuo Zhi metal material Science and Technology Ltd. invention; in inertia protective medium, with mid-frequency melting furnace, raw metal can be melt into liquid metals, its product oxygen content is low, granularity is fine, granule-morphology is controlled.Uniform ingredients segregation-free.The hydraulic atomized powder manufacturing apparatus of Jiu Tai Science and Technology Ltd. of Hunan Province exploitation; there is inert gas protection system: in the process of powder process; for reducing the oxidation of metal and alloy, reduce the oxygen content of powder, usual employing passes into a certain amount of inert gas and carries out atmosphere protection in atomisation tower.Because the oxygen content of atomised product is mainly from fusion process, therefore, adopt the oxygen content in power of this device fabrication between 10000-3000ppm.See Figure of description 1.
The water atomization equipment that Handan Rand Corporation produces then adopts crucible top, working chamber the way of adding a cover to attempt to separate the metal of air and melting, avoids the oxidation of metal bath.But the way of adding a cover due to top can not separate melting crucible and outside air completely, and therefore this device fabrication product oxygen content is out between 2000-3000ppm.See Figure of description 2.
Summary of the invention
For reducing oxygen content further, be different from the said equipment, the present invention adopts half chemistry as added the reproducibilities such as CO (or the gas of inertia and the method that vacuumizes, rear two method oxygen contents are slightly high) and the mechanical seal mode as moveable partition board isolation working chamber and spray chamber to reduce oxygen content in working chamber.Adopt mechanical seal mode can completely isolated working chamber and spray chamber, special sealing means possesses and allows metallic solution to enter spray chamber can to prevent again steam etc. from entering the feature of working chamber simultaneously, avoid contingent blast.Owing to can completely working chamber and outside air be separated, simultaneously again can completely isolated working chamber and spray chamber, see accompanying drawing 3.Therefore, the dusty material oxygen content adopting its oxygen content of this device fabrication dusty material out to produce than the said equipment reduces nearly order of magnitude, between 50 to 500ppm.This project formally sets up the project (2013J0107 Shanxi wealth index No. 195 literary compositions in 2013) in 2013 Technology Bureaus of Jinjiang City of Nian Huo Fujian Province.It is to be understood that the isolation working chamber of illustrating used herein and the method for spray chamber are moveable partition board.But the partition method included by this patent is not limited to this one above-mentioned.
Accompanying drawing explanation
Accompanying drawing 1-1 is the top view of open type water atomization equipment, and accompanying drawing 1-2 is the side view of open type water atomization equipment, and middle circle part is melting kettle, can find that melting kettle directly communicates with extraneous air.Therefore, the method oxygen content is higher.Accompanying drawing 2-1 is the top view of enclosed water atomization plant, and accompanying drawing 2-2 is the side view of enclosed water atomization plant, and the middle circle melting kettle position of contrast accompanying drawing 1-1, has added individual lid above, attempted to separate melting kettle and extraneous air.But this method can not separate working chamber and outside air completely, still leaves gap, still have the oxygen in partial air can enter in melting kettle between crucible top and lid.Therefore, adopt its oxygen content of the powder of this device fabrication still higher.Accompanying drawing 3 is water atomization equipment of the present invention, wherein accompanying drawing 3-1 is the top view of water atomization equipment of the present invention, accompanying drawing 3-2 is the side view of water atomization equipment of the present invention, can see that whole smelting equipment is all loaded in a closed container, the mode that employing vacuumizes takes the air in container away, is then optionally filled with reducibility gas or inert gas.Completely working chamber and outside air can be separated like this, again can completely isolated working chamber and spray chamber, reducibility gas can eliminate again a small amount of oxygen in melt simultaneously.Therefore, adopt its oxygen content of this device fabrication dusty material out minimum.
Detailed description of the invention
Reducibility gas used of herein illustrating is CO gas and NH 3gas.But the reducibility gas included by this patent is not limited to above-mentioned two kinds.
Embodiment 1: in equipment of the present invention, adds waste stainless steel in stove, is evacuated to 10 -3pa, pours an atmospheric pressure CO gas.Melting, to uniform temperature, is atomized.The powder obtained sieves, and measures its oxygen content.And with first two water atomization equipment under the same conditions acquired results contrast.Found that, its surface oxygen content of stainless steel powder adopting present device to produce is only 1/50th of envelope group formula equipment.
Embodiment 2: in equipment of the present invention, adds nickel sheet in stove, is evacuated to 10 -3pa, pours an atmospheric pressure NH 3gas.Melting, to uniform temperature, is atomized.The powder obtained sieves, and measures its oxygen content.And with first two water atomization equipment under the same conditions acquired results contrast.Found that, its surface oxygen content of nickel powder adopting present device to produce is only 1/20th of envelope group formula equipment.

Claims (3)

  1. Patent of the present invention relates to a kind of atomization plant, particularly relates to a kind of water atomization or aqueous vapor atomization plant.
    1. this equipment must comprise the technical characteristic of following 3 simultaneously.
    (1) this equipment has and adopts half chemistry as added the reducibility gas such as CO (comprise the gas that adds inertia or directly vacuumize, but can cause oxygen content slightly high) and half mechanical seal as adopted the mode of moveable partition board to reduce the feature of oxygen content in working chamber.
    (2) this equipment adopts mechanical seal mode to separate working chamber and spray chamber.Sealing mode possesses and allows metallic solution to enter spray chamber simultaneously can to prevent again steam from entering the feature of working chamber, avoid and may blast.The aqueous vapor simultaneously avoided in spray chamber enters working chamber, in order to avoid impact vacuumizes.
    (3) this equipment has the advantages that smelting equipment to be contained in the container of sealing.Then adopt the mode vacuumized to take whole air of working chamber away, and adopt inert gas or reducibility gas to protect where necessary.
  2. 2. reducibility gas used of illustrating in description is CO gas and NH 3gas.But the reducibility gas included by this patent is not limited to above-mentioned two kinds.
  3. 3. the method being used for separating completely working chamber and spray chamber is not limited to the mode of the employing moveable partition board of illustrating in description.
CN201410188894.1A 2014-04-30 2014-04-30 Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit Pending CN105014086A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201410188894.1A CN105014086A (en) 2014-04-30 2014-04-30 Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit
EP15786038.8A EP3219419A4 (en) 2014-04-30 2015-04-02 Semi-chemical semi-mechanical sealed ultra-low oxygen content atomizing device
AU2015252653A AU2015252653A1 (en) 2014-04-30 2015-04-02 Semi-chemical semi-mechanical sealed ultra-low oxygen content atomizing device
PCT/CN2015/000230 WO2015165278A1 (en) 2014-04-30 2015-04-02 Semi-chemical semi-mechanical sealed ultra-low oxygen content atomizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410188894.1A CN105014086A (en) 2014-04-30 2014-04-30 Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit

Publications (1)

Publication Number Publication Date
CN105014086A true CN105014086A (en) 2015-11-04

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CN201410188894.1A Pending CN105014086A (en) 2014-04-30 2014-04-30 Semi-chemical and semi-mechanical sealed ultralow oxygen content atomizing unit

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EP (1) EP3219419A4 (en)
CN (1) CN105014086A (en)
AU (1) AU2015252653A1 (en)
WO (1) WO2015165278A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746648A (en) * 2018-07-10 2018-11-06 北京中材人工晶体研究院有限公司 A kind of equipment and technique of diamond synthesis catalytic alloy powder

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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 (en) * 2000-03-28 2001-10-02 Fuji Electric Co Ltd Metal powder manufacturing method
CN1410208A (en) * 2002-11-25 2003-04-16 莱芜钢铁集团粉末冶金有限公司 Manufacturing method of alloy steel powder by spraying etc.
CN1475318A (en) * 2003-01-27 2004-02-18 李文漫 Device for jetting metal powder by inert gas under vacuum
JP2006063357A (en) * 2004-08-24 2006-03-09 Daido Steel Co Ltd Method for manufacturing metallic powder with water atomization method
CN103611942A (en) * 2013-12-10 2014-03-05 河北联合大学 High-pressure smelting atomizing nitrogen-quenching device and method for utilizing device to produce samarium iron nitrogen alloy powder

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
CN2855596Y (en) * 2004-10-26 2007-01-10 上海申建冶金机电技术有限公司 High pressure inert gas atomizing powder-prodn, equipment of continuous vacuum argon smelting
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
CN104232898B (en) * 2014-07-21 2016-10-05 湖南久泰冶金科技有限公司 Casting equipment is smelted in the vacuum of a kind of continuous prodution or gas shield

Patent Citations (8)

* 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 (en) * 2000-03-28 2001-10-02 Fuji Electric Co Ltd Metal powder manufacturing method
CN1410208A (en) * 2002-11-25 2003-04-16 莱芜钢铁集团粉末冶金有限公司 Manufacturing method of alloy steel powder by spraying etc.
CN1475318A (en) * 2003-01-27 2004-02-18 李文漫 Device for jetting metal powder by inert gas under vacuum
JP2006063357A (en) * 2004-08-24 2006-03-09 Daido Steel Co Ltd Method for manufacturing metallic powder with water atomization method
CN103611942A (en) * 2013-12-10 2014-03-05 河北联合大学 High-pressure smelting atomizing nitrogen-quenching device and method for utilizing device to produce samarium iron nitrogen alloy powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108746648A (en) * 2018-07-10 2018-11-06 北京中材人工晶体研究院有限公司 A kind of equipment and technique of diamond synthesis catalytic alloy powder

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EP3219419A4 (en) 2019-02-27
AU2015252653A1 (en) 2017-01-05
EP3219419A1 (en) 2017-09-20
WO2015165278A1 (en) 2015-11-05

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