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BR9907146A - Processo de preparação de um pó à base de ferro em um forno à prova de gás - Google Patents

Processo de preparação de um pó à base de ferro em um forno à prova de gás

Info

Publication number
BR9907146A
BR9907146A BR9907146-0A BR9907146A BR9907146A BR 9907146 A BR9907146 A BR 9907146A BR 9907146 A BR9907146 A BR 9907146A BR 9907146 A BR9907146 A BR 9907146A
Authority
BR
Brazil
Prior art keywords
gas
oven
iron
preparing
powder
Prior art date
Application number
BR9907146-0A
Other languages
English (en)
Inventor
Johan Arvidsson
Ola Eriksson
Original Assignee
Hoeganaes Ab
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 Hoeganaes Ab filed Critical Hoeganaes Ab
Publication of BR9907146A publication Critical patent/BR9907146A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

Patente de Invenção: <B>"PROCESSO DE PREPARAçãO DE UM Pó à BASE DE FERRO EM UM FORNO à PROVA DE GáS"<D>. A invenção refere-se a um processo em baixa pressão de um pó à base de ferro, opcionalmente ligado, compreendendo as etapas de preparar um pó bruto consistindo, essencialmente, em ferro e, opcionalmente, pelo menos, de um elemento de liga selecionado do grupo consistindo em cromo, manganês, cobre, níquel, vanádio, nióbio, boro, silício, molibdênio e tungstênio; alimentar um forno à prova de gás com o pó em uma atmosfera essencialmente inerte e fechar o forno; aumentar a temperatura do forno; monitorar o aumento da formação de CO gasoso e evacuar gás do forno, quando um aumento significativo da formação de CO é observado; e resfriar o pó quando o aumento da formação de CO gasoso diminui.
BR9907146-0A 1998-01-21 1999-01-21 Processo de preparação de um pó à base de ferro em um forno à prova de gás BR9907146A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800153A SE9800153D0 (sv) 1998-01-21 1998-01-21 Low pressure process
PCT/SE1999/000093 WO1999037425A1 (en) 1998-01-21 1999-01-21 Process of preparing an iron-based powder in a gas-tight furnace

Publications (1)

Publication Number Publication Date
BR9907146A true BR9907146A (pt) 2000-10-24

Family

ID=20409928

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907146-0A BR9907146A (pt) 1998-01-21 1999-01-21 Processo de preparação de um pó à base de ferro em um forno à prova de gás

Country Status (11)

Country Link
US (1) US6355087B1 (pt)
EP (1) EP1049553B1 (pt)
JP (1) JP2002501123A (pt)
AU (1) AU2446799A (pt)
BR (1) BR9907146A (pt)
CA (1) CA2318214C (pt)
DE (1) DE69909966T2 (pt)
ES (1) ES2199545T3 (pt)
SE (1) SE9800153D0 (pt)
TW (1) TW372894B (pt)
WO (1) WO1999037425A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0201824D0 (sv) * 2002-06-14 2002-06-14 Hoeganaes Ab Pre-alloyed iron based powder
JP2007324270A (ja) * 2006-05-31 2007-12-13 Toyota Motor Corp 磁性粉末の製造方法および圧粉コアの製造方法
US20170361378A1 (en) * 2015-02-25 2017-12-21 Metalvalue Sas Compacting of gas atomized metal powder to a part
KR102064146B1 (ko) 2015-09-11 2020-01-08 제이에프이 스틸 가부시키가이샤 소결 부재 원료용 합금강분의 제조 방법
WO2017043095A1 (ja) 2015-09-11 2017-03-16 Ｊｆｅスチール株式会社 粉末冶金用合金鋼粉の製造方法
KR102074121B1 (ko) 2015-09-24 2020-02-06 제이에프이 스틸 가부시키가이샤 소결 부재 원료용 합금 강분의 제조 방법
JP6112283B1 (ja) 2015-09-30 2017-04-12 Ｊｆｅスチール株式会社 粉末冶金用合金鋼粉の製造方法
KR102026767B1 (ko) 2015-09-30 2019-09-30 제이에프이 스틸 가부시키가이샤 분말 야금용 합금 강분의 제조 방법
WO2017056510A1 (ja) 2015-09-30 2017-04-06 Ｊｆｅスチール株式会社 粉末冶金用合金鋼粉の製造方法
JP6112282B1 (ja) 2015-09-30 2017-04-12 Ｊｆｅスチール株式会社 粉末冶金用合金鋼粉の製造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666439A (en) * 1970-03-02 1972-05-30 Allegheny Ludlum Ind Inc Method of decarburizing alloy steels
JPS5219823B2 (pt) 1972-12-25 1977-05-31
US4209320A (en) * 1976-03-12 1980-06-24 Kawasaki Steel Corporation Process for producing low-oxygen iron-base metallic powder
AT346877B (de) * 1976-08-04 1978-11-27 Voest Ag Verfahren zur steuerung eines stahlfrischpro- zesses fuer staehle mit einem c-gehalt im bereich von 0,1 bis 0,8 gew.-%
JPS5442324A (en) * 1977-09-10 1979-04-04 Nisshin Steel Co Ltd Control procedure of steel making process using mass spectrometer
JPS5931812A (ja) * 1982-08-18 1984-02-21 Kawasaki Steel Corp 転炉の排ガス回収法と回収装置
US4448746A (en) 1982-11-05 1984-05-15 Sumitomo Metal Industries, Ltd. Process for producing alloy steel powder
JPS61257409A (ja) * 1985-05-09 1986-11-14 Nippon Steel Corp 転炉排ガス処理装置の密閉操業方法
JPH0428813A (ja) * 1990-05-24 1992-01-31 Sumitomo Metal Ind Ltd 極低炭素鋼の製造方法
DE4113928A1 (de) * 1991-03-13 1992-09-17 Asea Brown Boveri Verfahren zur herstellung eines sinterkoerpers aus stahlpulver

Also Published As

Publication number Publication date
CA2318214A1 (en) 1999-07-29
ES2199545T3 (es) 2004-02-16
US6355087B1 (en) 2002-03-12
JP2002501123A (ja) 2002-01-15
AU2446799A (en) 1999-08-09
DE69909966D1 (de) 2003-09-04
EP1049553B1 (en) 2003-07-30
SE9800153D0 (sv) 1998-01-21
EP1049553A1 (en) 2000-11-08
TW372894B (en) 1999-11-01
DE69909966T2 (de) 2004-01-29
WO1999037425A1 (en) 1999-07-29
CA2318214C (en) 2008-08-26

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 11A E 12A ANUIDADES

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2258 DE 15/04/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 11A E 12A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2607 DE 22-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.