KR910000275A - 가스 애토미제이션(Gas Atomization)에 의한 분말 제조 방법 - Google Patents

가스 애토미제이션(Gas Atomization)에 의한 분말 제조 방법 Download PDF

Info

Publication number
KR910000275A
KR910000275A KR1019900007958A KR900007958A KR910000275A KR 910000275 A KR910000275 A KR 910000275A KR 1019900007958 A KR1019900007958 A KR 1019900007958A KR 900007958 A KR900007958 A KR 900007958A KR 910000275 A KR910000275 A KR 910000275A
Authority
KR
South Korea
Prior art keywords
gas
stream
annular
molten material
molten
Prior art date
Application number
KR1019900007958A
Other languages
English (en)
Other versions
KR960004430B1 (ko
Inventor
후란시스 릴레이 마이클
Original Assignee
티모티 엔. 비숍
유니온 카바이드 인더스트리얼 개시즈 테크놀로지 코포레이션
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 티모티 엔. 비숍, 유니온 카바이드 인더스트리얼 개시즈 테크놀로지 코포레이션 filed Critical 티모티 엔. 비숍
Publication of KR910000275A publication Critical patent/KR910000275A/ko
Application granted granted Critical
Publication of KR960004430B1 publication Critical patent/KR960004430B1/ko

Links

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
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Glanulating (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

내용 없음

Description

가스 애토미제이션(Gas Atomization)에 의한 분말 제조 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 발산하는 내부 가스 제트 경계를 나타내는 본 발명 방법의 환형가스스트림의 단면도,
제2도는 반대방향으로 흐르는 가스 성분을 나타내는 본 발명 방법의 용융 및 환형가스스트림의 단면도,
제3도는 본 발명 방법의 용융스트림상의 영향을 나타낸 단면도.

Claims (18)

  1. 분말제조용 방법에 있어서, (A) 축방향으로 흐르는 용융물질의 스트림(stream)을 형성하는 단계, (B) 용융스트림 주위를 따라 발산하는 와류형의 가스의 환형스트림을 형성시키는 단계와, 여기서 발산하는 환형가스스트림으로부터 축방향으로 반대되는 방향에서 가스의 일부가 용융스트림쪽으로 흐르게 하도록 상기 가스스트림이 충분한 각 속도대 축속도비를 갖고 있고, (C) 용융스트림을 반대방향으로 흐르는 가스스트림과 접촉시켜 용융스트림을 빠르게 방사형으로 퍼지지게하는 단계, (D) 방사형으로 퍼지는 용융스트림을 발산하는 환형가스스트림과 접촉시켜 용융스트림이 비말 형태로 되게 하는 단계와, (E) 비말을 분말형태로 응고시키는 단계로 구성됨을 특징으로 하는 분말 제조 방법.
  2. 제1항에 있어서, 각 속도대 축속도비가 적어도 0.6임을 특징으로 하는 방법.
  3. 제1항에 있어서, 각 속도대 축속도비가 적어도 2를 초과하지 않음을 특징으로 하는 방법.
  4. 제1항에 있어서, 환형가스스트림이 용융스트림 질량흐름율의 0.1 내지 10배 범위의 질량흐름율을 가짐을 특징으로하는 방법.
  5. 제1항에 있어서, 분말이 1 내지 1000미크로메타범위의 평균 입자 크기를 갖고 있음을 특징으로하는 방법.
  6. 제1항에 있어서, 용융물질이 금속임을 특징으로 하는 방법.
  7. 제1항에 있어서, 금속이 구리임을 특징으로 하는 방법.
  8. 제1항에 있어서, 용융물질이 세라믹임을 특징으로 하는 방법.
  9. 제1항에 있어서, 가스가 질소를 포함함을 특징으로하는 방법.
  10. 제1항에 있어서, 가스가 헬륨을 포함함을 특징으로 하는 방법.
  11. 제1항에 있어서, 가스가 아르곤을 포함함을 특징으로하는 방법.
  12. 제1항에 있어서, 가스가 산화성가스를 포함함을 특징으로하는 방법.
  13. 제12항에 있어서, 가스와 용융물질간의 접촉결과로 용융물질의 적어도 일부가 산화됨을 특징으로 하는 방법.
  14. 제1항에 있어서, 가스가 가스 혼합물임을 특징으로 하는 방법.
  15. 제14항에 있어서, 가스혼합물이 질소, 아르곤, 헬륨 및 산소로 구성되는 그룹으로부터의 두가지 또는 그 이상의 가스를 포함함을 특징으로 하는 방법.
  16. 제1항에 있어서, 각 속도대 축속도비가 적어도 0.65임을 특징으로 하는 방법.
  17. 제1항에 있어서, 환형가스스트림이 환형노즐을 통한 가스분사에 의해 형성됨을 특징으로 하는 방법.
  18. 제1항에 있어서, 환형가스스트림이 다수의 가스 분사 포트를 통한 가스분사에 의해 형성됨을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900007958A 1989-06-01 1990-05-31 가스 분무에 의한 분말 제조방법 KR960004430B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US359,978 1989-06-01
US07/359,978 US4988464A (en) 1989-06-01 1989-06-01 Method for producing powder by gas atomization
US359978 1989-06-01

Publications (2)

Publication Number Publication Date
KR910000275A true KR910000275A (ko) 1991-01-29
KR960004430B1 KR960004430B1 (ko) 1996-04-03

Family

ID=23416088

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900007958A KR960004430B1 (ko) 1989-06-01 1990-05-31 가스 분무에 의한 분말 제조방법

Country Status (9)

Country Link
US (1) US4988464A (ko)
EP (1) EP0400659B1 (ko)
JP (1) JPH0751219B2 (ko)
KR (1) KR960004430B1 (ko)
BR (1) BR9002551A (ko)
CA (1) CA2018017C (ko)
DE (1) DE69002398T2 (ko)
ES (1) ES2043179T3 (ko)
MX (1) MX174584B (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101045171B1 (ko) * 2002-04-03 2011-06-30 호야 가부시키가이샤 스핀-코팅 방법, 스핀-코팅 조건 결정 방법, 및 마스크 블랭크
KR101045177B1 (ko) * 2003-09-29 2011-06-30 호야 가부시키가이샤 마스크 블랭크 및 그 제조방법

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171360A (en) * 1990-08-30 1992-12-15 University Of Southern California Method for droplet stream manufacturing
US5226948A (en) * 1990-08-30 1993-07-13 University Of Southern California Method and apparatus for droplet stream manufacturing
US5147448A (en) * 1990-10-01 1992-09-15 Nuclear Metals, Inc. Techniques for producing fine metal powder
US5114470A (en) * 1990-10-04 1992-05-19 The United States Of America As Represented By The Secretary Of Commerce Producing void-free metal alloy powders by melting as well as atomization under nitrogen ambient
US5149063A (en) * 1991-04-17 1992-09-22 The United States Of America As Represented By The Secretary Of The Army Collision centrifugal atomization unit
US5242110A (en) * 1991-12-02 1993-09-07 Praxair Technology, Inc. Method for changing the direction of an atomized flow
US5165940A (en) * 1992-04-23 1992-11-24 E. I. Du Pont De Nemours And Company Spinneret
US5289975A (en) * 1992-06-18 1994-03-01 General Electric Company Method and apparatus for atomizing molten metal
US5718951A (en) * 1995-09-08 1998-02-17 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of a molten metal and deposition of a powdered metal as a support material
US5617911A (en) * 1995-09-08 1997-04-08 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of a support material and a deposition material
US5787965A (en) * 1995-09-08 1998-08-04 Aeroquip Corporation Apparatus for creating a free-form metal three-dimensional article using a layer-by-layer deposition of a molten metal in an evacuation chamber with inert environment
US5669433A (en) * 1995-09-08 1997-09-23 Aeroquip Corporation Method for creating a free-form metal three-dimensional article using a layer-by-layer deposition of a molten metal
US5746844A (en) * 1995-09-08 1998-05-05 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of molten metal and using a stress-reducing annealing process on the deposited metal
US5980604A (en) * 1996-06-13 1999-11-09 The Regents Of The University Of California Spray formed multifunctional materials
NL1006284C1 (nl) * 1997-06-11 1998-12-14 Wouter Slob Werkwijze en inrichting voor het drogen van verstoven vloeistofconcentraten tot een vochtgehalte van de verstoven deeltjes tot, of ten naaste bij tot hun, bij hun diameter behorende Kritisch Vochtgehalte Punt in een eerste drooggas, waarna de deeltjes op dit vochtgehalte aangekomen, direct uit het eerste drooggas gehaald worden en in een tweetal menglagen een langzame verdere droging ondergaan totdat het ongebonden water verdwenen of nagenoeg verdwenen is.
US6565010B2 (en) 2000-03-24 2003-05-20 Praxair Technology, Inc. Hot gas atomization
KR100732446B1 (ko) * 2000-12-07 2007-06-27 주식회사 포스코 저비등점 금속의 증기압을 이용한 고융점 금속의 액적화방법
US7811395B2 (en) * 2008-04-18 2010-10-12 United Technologies Corporation High strength L12 aluminum alloys
US20090263273A1 (en) * 2008-04-18 2009-10-22 United Technologies Corporation High strength L12 aluminum alloys
US8002912B2 (en) * 2008-04-18 2011-08-23 United Technologies Corporation High strength L12 aluminum alloys
US7871477B2 (en) * 2008-04-18 2011-01-18 United Technologies Corporation High strength L12 aluminum alloys
US7875133B2 (en) * 2008-04-18 2011-01-25 United Technologies Corporation Heat treatable L12 aluminum alloys
US7879162B2 (en) * 2008-04-18 2011-02-01 United Technologies Corporation High strength aluminum alloys with L12 precipitates
US20090260724A1 (en) * 2008-04-18 2009-10-22 United Technologies Corporation Heat treatable L12 aluminum alloys
US7875131B2 (en) * 2008-04-18 2011-01-25 United Technologies Corporation L12 strengthened amorphous aluminum alloys
US8017072B2 (en) * 2008-04-18 2011-09-13 United Technologies Corporation Dispersion strengthened L12 aluminum alloys
US8409373B2 (en) * 2008-04-18 2013-04-02 United Technologies Corporation L12 aluminum alloys with bimodal and trimodal distribution
US20100143177A1 (en) * 2008-12-09 2010-06-10 United Technologies Corporation Method for forming high strength aluminum alloys containing L12 intermetallic dispersoids
US8778099B2 (en) * 2008-12-09 2014-07-15 United Technologies Corporation Conversion process for heat treatable L12 aluminum alloys
US8778098B2 (en) * 2008-12-09 2014-07-15 United Technologies Corporation Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids
US20100226817A1 (en) * 2009-03-05 2010-09-09 United Technologies Corporation High strength l12 aluminum alloys produced by cryomilling
US20100254850A1 (en) * 2009-04-07 2010-10-07 United Technologies Corporation Ceracon forging of l12 aluminum alloys
US20100252148A1 (en) * 2009-04-07 2010-10-07 United Technologies Corporation Heat treatable l12 aluminum alloys
US9611522B2 (en) * 2009-05-06 2017-04-04 United Technologies Corporation Spray deposition of L12 aluminum alloys
US9127334B2 (en) * 2009-05-07 2015-09-08 United Technologies Corporation Direct forging and rolling of L12 aluminum alloys for armor applications
US20110044844A1 (en) * 2009-08-19 2011-02-24 United Technologies Corporation Hot compaction and extrusion of l12 aluminum alloys
US8728389B2 (en) * 2009-09-01 2014-05-20 United Technologies Corporation Fabrication of L12 aluminum alloy tanks and other vessels by roll forming, spin forming, and friction stir welding
US8409496B2 (en) * 2009-09-14 2013-04-02 United Technologies Corporation Superplastic forming high strength L12 aluminum alloys
US20110064599A1 (en) * 2009-09-15 2011-03-17 United Technologies Corporation Direct extrusion of shapes with l12 aluminum alloys
US9194027B2 (en) * 2009-10-14 2015-11-24 United Technologies Corporation Method of forming high strength aluminum alloy parts containing L12 intermetallic dispersoids by ring rolling
US20110091345A1 (en) * 2009-10-16 2011-04-21 United Technologies Corporation Method for fabrication of tubes using rolling and extrusion
US20110091346A1 (en) * 2009-10-16 2011-04-21 United Technologies Corporation Forging deformation of L12 aluminum alloys
US8409497B2 (en) * 2009-10-16 2013-04-02 United Technologies Corporation Hot and cold rolling high strength L12 aluminum alloys
US10569187B2 (en) 2011-02-28 2020-02-25 Gea Process Engineering A/S External mixing pressurized two-fluid nozzle and a spray drying method
WO2012116697A1 (en) * 2011-02-28 2012-09-07 Gea Process Engineering A/S External mixing pressurized two-fluid nozzle and a spray drying method
US9393336B2 (en) * 2011-07-08 2016-07-19 S. C. Johnson & Son, Inc. Insert for dispensing a compressed gas product, system with such an insert, and method of dispensing a compressed gas product
KR101536454B1 (ko) * 2013-12-20 2015-07-13 주식회사 포스코 분말 제조 장치 및 분말 형성 방법
CN103801704B (zh) * 2014-02-28 2016-08-17 昆山德泰新材料科技有限公司 一种适用于3d打印的成型铜粉、制备方法及其用途
KR102421026B1 (ko) 2016-08-24 2022-07-14 5엔 플러스 아이엔씨. 저융점 금속 또는 합금 분말 미립화 제조 공정
US11047814B2 (en) 2017-08-07 2021-06-29 C. Uyemura & Co., Ltd. X-ray fluorescence analysis measurement method and X-ray fluorescence analysis measurement device
US11185920B2 (en) 2018-01-12 2021-11-30 Hammond Group, Inc. Methods and systems for making metal-containing particles
US11084095B2 (en) 2018-02-15 2021-08-10 5N Plus Inc. High melting point metal or alloy powders atomization manufacturing processes

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1501449A (en) * 1917-12-20 1924-07-15 Metals Disintegrating Co Metal-disintegrating apparatus
US1856679A (en) * 1925-07-22 1932-05-03 Gen Motors Res Corp Apparatus for comminuting metals
DE950422C (de) * 1940-06-19 1956-10-11 Norddeutsche Affinerie Verfahren zum Herstellen feiner Metallpulver
DE1433056B2 (de) * 1959-03-23 1971-06-16 Tachiki, Kenkichi, Sata, Masami Tokio Vorrichtung zum zerstaeuben eines schmelzfluessig/ metalls
DE1458080B2 (de) * 1963-11-28 1970-11-12 Knapsack Ag, 5033 Knapsack Ringlochdüse
US3253783A (en) * 1964-03-02 1966-05-31 Federal Mogul Bower Bearings Atomizing nozzle
US3309733A (en) * 1964-07-14 1967-03-21 Smith Corp A O Apparatus for producing metal powder
DE1285681B (de) * 1965-05-11 1968-12-19 Knapsack Ag Ringschlitzduese zum Zerstaeuben von geschmolzenem Werkstoff
US3501802A (en) * 1967-01-16 1970-03-24 Alloy Metals Inc Method and apparatus for producing metal powders
US3752611A (en) * 1969-06-18 1973-08-14 Republic Steel Corp Apparatus for producing metal powder
US3814558A (en) * 1969-09-04 1974-06-04 Metal Innovations Inc Apparatus for producing low oxide metal powders
US3813196A (en) * 1969-12-03 1974-05-28 Stora Kopparbergs Bergslags Ab Device for manufacture of a powder by atomizing a stream of molten metal
US3695795A (en) * 1970-03-20 1972-10-03 Conn Eng Assoc Corp Production of powdered metal
US3692443A (en) * 1970-10-29 1972-09-19 United States Steel Corp Apparatus for atomizing molten metal
US3826598A (en) * 1971-11-26 1974-07-30 Nuclear Metals Inc Rotating gas jet apparatus for atomization of metal stream
JPS5342031B2 (ko) * 1973-10-22 1978-11-08
US4212837A (en) * 1977-05-04 1980-07-15 Tokyo Shibaura Electric Co., Ltd. Method and apparatus for forming spherical particles of thermoplastic material
SE429898B (sv) * 1980-01-16 1983-10-03 Stora Kopparbergs Bergslags Ab Sett att forhindra pakladdning vid reduktion i flytbedd av finfordelat metalloxidhaltigt material
US4390368A (en) * 1981-04-01 1983-06-28 Gte Products Corporation Flame spray powder
US4416600A (en) * 1982-02-10 1983-11-22 Griff Williams Co. Apparatus for producing high purity metal powders
US4631013A (en) * 1984-02-29 1986-12-23 General Electric Company Apparatus for atomization of unstable melt streams
IL74267A (en) * 1984-02-29 1988-01-31 Gen Electric Method of atomization of melt from a closely coupled nozzle,apparatus and product formed
FR2605538B1 (fr) * 1986-10-27 1989-12-22 Serole Bernard Tuyere d'atomisation par gaz a ecoulement liquide stabilise aerodynamiquement
US4778516A (en) * 1986-11-03 1988-10-18 Gte Laboratories Incorporated Process to increase yield of fines in gas atomized metal powder
US4787935A (en) * 1987-04-24 1988-11-29 United States Of America As Represented By The Secretary Of The Air Force Method for making centrifugally cooled powders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101045171B1 (ko) * 2002-04-03 2011-06-30 호야 가부시키가이샤 스핀-코팅 방법, 스핀-코팅 조건 결정 방법, 및 마스크 블랭크
KR101045177B1 (ko) * 2003-09-29 2011-06-30 호야 가부시키가이샤 마스크 블랭크 및 그 제조방법

Also Published As

Publication number Publication date
DE69002398D1 (de) 1993-09-02
US4988464A (en) 1991-01-29
JPH0751219B2 (ja) 1995-06-05
MX174584B (es) 1994-05-27
CA2018017A1 (en) 1990-12-01
DE69002398T2 (de) 1993-11-11
CA2018017C (en) 1995-11-07
EP0400659B1 (en) 1993-07-28
ES2043179T3 (es) 1993-12-16
EP0400659A1 (en) 1990-12-05
KR960004430B1 (ko) 1996-04-03
BR9002551A (pt) 1991-08-13
JPH0332735A (ja) 1991-02-13

Similar Documents

Publication Publication Date Title
KR910000275A (ko) 가스 애토미제이션(Gas Atomization)에 의한 분말 제조 방법
KR900018595A (ko) 결합된 질소를 함유하는 연료의 연소방법
DE3642122C1 (de) Brennstoffeinspritzvorrichtung
CA2324788C (en) System for producing a single coherent jet
SE8500969D0 (sv) Apparatus and method for atomization of unstable melt streams
EP0342388A3 (en) High-velocity controlled-temperature plasma spray method and apparatus
KR920012806A (ko) 연소영역 안으로 주입되는 고속 유체의 흐름 방향을 바꾸기 위한 장치 및 방법
KR840001286A (ko) 가스기류에 의해 운반되는 섬유의 수집기구의 분배 개선방법 및 그 장치
EP2052788B1 (en) Apparatus and method for improved mixing of axial injected material in thermal spray guns
KR880011822A (ko) 도전성 복합재료 및 그의 제조방법
KR960000313A (ko) 다공성의 비오염노즐 및 이 노즐을 사용한 가스주입방법
US3682390A (en) Liquid atomizing devices
JPS55133871A (en) Narrow groove arc welding method
EP0352035A3 (en) Improved mixing and casting techniques
JPH0631296Y2 (ja) 濃淡燃焼型微粉炭バ−ナ
SU1375304A1 (ru) Смеситель
KR920703186A (ko) 연소가스의 황을 제거하는 방법
KR850008632A (ko) 고체입자를 가속시키는 노즐장치
KR920006034A (ko) 미분쇄장치(micromilling device)
RU1779283C (ru) Способ формировани закрученных потоков сплошных сред
JPS63137108A (ja) 金属粉末の製造方法
SU727236A1 (ru) Форсунка дл распыливани и впрыска жидкости
Singh et al. Development of an Atomization Process for Production of Rapidly Solidified Powders
SU1574984A1 (ru) Способ комбинированного сжигани пылевидного и газообразного топлива
JPS6247412A (ja) 金属粉末の製造方法

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19990331

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee