KR960017012A - Iron powder manufacturing method with excellent formability - Google Patents

Iron powder manufacturing method with excellent formability Download PDF

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Publication number
KR960017012A
KR960017012A KR1019940029115A KR19940029115A KR960017012A KR 960017012 A KR960017012 A KR 960017012A KR 1019940029115 A KR1019940029115 A KR 1019940029115A KR 19940029115 A KR19940029115 A KR 19940029115A KR 960017012 A KR960017012 A KR 960017012A
Authority
KR
South Korea
Prior art keywords
iron powder
water spray
producing
heat treatment
spray method
Prior art date
Application number
KR1019940029115A
Other languages
Korean (ko)
Other versions
KR970002092B1 (en
Inventor
김경협
안상호
마봉열
Original Assignee
김만재
포항종합제철 주식회사
신창식
재단법인산업과학기술연구소
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 김만재, 포항종합제철 주식회사, 신창식, 재단법인산업과학기술연구소 filed Critical 김만재
Priority to KR1019940029115A priority Critical patent/KR970002092B1/en
Publication of KR960017012A publication Critical patent/KR960017012A/en
Application granted granted Critical
Publication of KR970002092B1 publication Critical patent/KR970002092B1/en

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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
    • 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
    • B22F1/0007—
    • 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
    • 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
    • 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
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/01—Reducing atmosphere
    • 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
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/10—Inert gases
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/35—Iron

Abstract

본 발명은 물분사법에 의해 제조되는 철분말에 대한 열처리 과정을 제어하므로서 성형성이 우수한 철분말을 제조하는 방법을 제공하고자 하는데, 그 목적이 있다.An object of the present invention is to provide a method for producing an iron powder having excellent moldability while controlling a heat treatment process for an iron powder produced by a water spray method.

본 발명은 통상의 물분사법에 의해 철분말을 제조하는 방법에 있어서, 상기 물분사법으로 얻어진 철분말을 환원 또는 불활성 분위기하에서 900℃ 이상의 온도로 가열하여 유지한 다음 냉각하는 열처리 과정을 2회 이상 실시함을 특징으로 하는 성형성이 우수한 철분말의 제조방법에 관한 것을 그 요지로 한다.The present invention provides a method for producing iron powder by a conventional water spray method, wherein the iron powder obtained by the water spray method is heated or maintained at a temperature of 900 ℃ or more under a reducing or inert atmosphere, and then subjected to a heat treatment process of cooling at least twice. The gist of the present invention relates to a method for producing an iron powder having excellent moldability.

Description

성형성이 우수한 철 분말 제조방법Iron powder manufacturing method with excellent formability

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (2)

통상의 물분사법에 의해 철분말을 제조하는 방법에 있어서, 상기 물분사법으로 얻어진 철분말을 환원 또는 불활성 분위기하에서 900℃이상의 온도로 가열하여 유지한 다음 냉각하는 열처리 과정을 2회 이상 실시함을 특징으로 하는 성형성이 우수한 철분말의 제조방법.In the method for producing iron powder by a conventional water spray method, the iron powder obtained by the water spray method is heated or maintained at a temperature of 900 ℃ or more in a reducing or inert atmosphere, and then subjected to two or more heat treatment processes for cooling. The manufacturing method of the iron powder which is excellent in moldability. 제1항에 있어서, 상기 2회 이상 열처리 후의 철분말의 입자내 결정립수가 10개 이하임을 특징으로 하는 제조방법.The method according to claim 1, wherein the number of grains in the particles of the iron powder after heat treatment two or more times is 10 or less. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940029115A 1994-11-08 1994-11-08 Method of manufacturing iron powder KR970002092B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940029115A KR970002092B1 (en) 1994-11-08 1994-11-08 Method of manufacturing iron powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940029115A KR970002092B1 (en) 1994-11-08 1994-11-08 Method of manufacturing iron powder

Publications (2)

Publication Number Publication Date
KR960017012A true KR960017012A (en) 1996-06-17
KR970002092B1 KR970002092B1 (en) 1997-02-22

Family

ID=19397285

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940029115A KR970002092B1 (en) 1994-11-08 1994-11-08 Method of manufacturing iron powder

Country Status (1)

Country Link
KR (1) KR970002092B1 (en)

Also Published As

Publication number Publication date
KR970002092B1 (en) 1997-02-22

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