KR960040519A - Reduced iron for friction materials and its manufacturing method - Google Patents

Reduced iron for friction materials and its manufacturing method Download PDF

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Publication number
KR960040519A
KR960040519A KR1019950012058A KR19950012058A KR960040519A KR 960040519 A KR960040519 A KR 960040519A KR 1019950012058 A KR1019950012058 A KR 1019950012058A KR 19950012058 A KR19950012058 A KR 19950012058A KR 960040519 A KR960040519 A KR 960040519A
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KR
South Korea
Prior art keywords
raw material
reduced iron
iron
weight
friction
Prior art date
Application number
KR1019950012058A
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Korean (ko)
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KR0159353B1 (en
Inventor
손재웅
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손재웅
박상호
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Priority to KR1019950012058A priority Critical patent/KR0159353B1/en
Publication of KR960040519A publication Critical patent/KR960040519A/en
Application granted granted Critical
Publication of KR0159353B1 publication Critical patent/KR0159353B1/en

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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
    • 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
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • 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
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/062—Fibrous particles
    • 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
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • B22F2009/001—Making metallic powder or suspensions thereof from scrap particles
    • 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
    • B22F2201/013—Hydrogen
    • 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
    • B22F2201/02—Nitrogen
    • 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 제동장치등에 사용되는 마찰재용 환원분철 및 그 제조방법에 관한 것으로서, 환원분철의 조성은 중량%로, C : 6∼33, CaO : 3∼18, SiO2: 0.7∼6, Al2O3: 0.4∼3.7, MgO : 0.4∼2, ZnO : 0.1∼1, TiO2: 0.1∼0.9, 잔부 금속 Fe 및 기타 불가피하게 함유되는 불순물을 포함하여 이루어지고, 그 조직이 미세 다공질 섬유상인 마찰재용 환원분철 및 이를 슬러지 원료를 이용하여 90% 이하의 N2함유 수소 또는 100% H2분위기에서 환원처리하는 제조방법에 관한 것을 그 요지로 한다.The present invention relates to reduced iron for friction materials used in braking devices and the like, and a method for producing reduced iron, wherein the composition of the reduced iron is in weight%, C: 6 to 33, CaO: 3 to 18, SiO 2 : 0.7 to 6, Al 2 Friction comprising O 3 : 0.4-3.7, MgO: 0.4-2, ZnO: 0.1-1, TiO 2 : 0.1-0.9, balance metal Fe and other unavoidable impurities, the structure of which is microporous fibrous The gist of the present invention relates to a reduced ferrous iron for recycling and a method of reducing the same using 90% or less of N 2 -containing hydrogen or 100% H 2 using sludge raw material.

Description

마찰재용 환원분철 및 그 제조방법Reduced iron for friction materials and its manufacturing method

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

제1도는 환원분철에 대한 개략적인 제조공정도로서 (가) 및 (나)는 종래방법, (다)는 본 발명방법을 나타냄, 제2도는 환원분철의 주사전자현미경사진(SEM)으로서, (가)는 종래방법에 따라 제조된 환원분철의 경우이고, (나)와 (다)는 본 발명에 따라 제조된 환원분철을 나타냄.1 is a schematic manufacturing process diagram for reduced iron, (a) and (b) shows a conventional method, (c) shows a method of the present invention, and FIG. 2 shows a scanning electron micrograph (SEM) of reduced iron, (a) Is the case of reduced iron produced according to the conventional method, (b) and (d) represents the reduced iron produced according to the present invention.

Claims (6)

중량%로, 탄소(C) : 6∼33%, 산화칼슘(CaO) : 3∼18%, 산화규소(SiO2) : 0.7∼6%, 알루미나(Al2O3) : 0.4∼3.7%, 산화마그네슘(MgO) : 0.4∼2%, 산화아연(ZnO) : 0.1∼1%, 산화티타늄(TiO2) : 0.1∼0.9%, 잔부 금속 Fe 및 기타 불가피하게 함유되는 불순물을 포함하여 조성되고, 그 조직이 미세 다공질 섬유상임을 특징으로 하는 마찰재용 환원 분철.By weight%, carbon (C): 6-33%, calcium oxide (CaO): 3-18%, silicon oxide (SiO 2 ): 0.7-6%, alumina (Al 2 O 3 ): 0.4-3.7%, Magnesium oxide (MgO): 0.4 to 2%, zinc oxide (ZnO): 0.1 to 1%, titanium oxide (TiO 2 ): 0.1 to 0.9%, balance metal Fe and other unavoidable impurities, Reduced iron for friction materials, characterized in that the structure is fine porous fibrous. 제1항에 있어서, 상기 분철의 잔부 조성이 중량%로, 금속 Fe : 39∼74%, FeO : 2% 이하 및 MnO : 0.1∼0.5%를 포함함을 특징으로 하는 마찰재용 환원분철.2. The reduced iron for friction material according to claim 1, wherein the remainder composition of the powdered iron is by weight%, containing 39 to 74% of Fe, 2% or less of FeO, and 0.1 to 0.5% of MnO. 제1항 또는 제2항에 있어서, 상기 분철의 입자크기가 20∼400㎛임을 특징으로 하는 마찰재용 환원분철.The reduced powdered iron for friction material according to claim 1 or 2, wherein the powdered particle has a particle size of 20 to 400 µm. 철강제조 공정에서 부산물로 발생되는 슬러지를 원료로하여 이 원료를 450∼600℃의 온도범위에서 예열하고 상기 원료의 염기도를 1.0∼3.0으로 조절하는 단계 및 염기도가 조절된 원료에 수소 또는 90% 이하의 질소를 함유한 수소 혼합가스를 상기 원료 중량기준으로 1∼20ℓ의 범위로 취입하고, 800∼1050℃의 온도에서 환원처리 하는 단계를 포함하여 구성됨을 특징으로 하는 마찰재용 환원분철의 제조방법.Pre-heating the raw material in the temperature range of 450 ~ 600 ℃ and adjusting the basicity of the raw material to 1.0 ~ 3.0, and using the sludge generated as a byproduct in the steel manufacturing process, and hydrogen or 90% or less The method for producing reduced iron for friction material comprising the step of blowing the hydrogen mixed gas containing nitrogen in the range of 1 to 20 L based on the weight of the raw material, and reducing at 800 to 1050 ° C. 제4항에 있어서, 슬러지 원료 조성이 중량%로, 탄소 : 7∼35%, CaO : 3∼9%, SiO2: 1∼7%, Al2O3: 0.5∼3.9%, MgO : 0.4∼2.5%, ZnO : 0.11.2%, TiO : 0.1∼1.0%, MnO : 0.2∼0.7% 및 잔부는 전철분(T. Fe) : 32.5∼57.5%를 포함한 것임을 특징으로 하는 방법.According to claim 4, wherein the sludge is raw material composition in weight percent, carbon: 7~35%, CaO: 3~9% , SiO 2: 1~7%, Al 2 O 3: 0.5~3.9%, MgO: 0.4~ 2.5%, ZnO: 0.11.2%, TiO: 0.1-1.0%, MnO: 0.2-0.7%, and the remainder contains iron powder (T. Fe): 32.5-57.5%. 제4항에 있어서, 상기 환원단계에서 원료에 세라믹 또는 스틸볼을 투입하여 원료와 함께 회전 시키면서 환원함을 특징으로 하는 방법.The method of claim 4, wherein in the reducing step, a ceramic or steel ball is added to the raw material and the raw material is rotated together with the raw material to reduce. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950012058A 1995-05-16 1995-05-16 Reduction powder and process thereof KR0159353B1 (en)

Priority Applications (1)

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KR1019950012058A KR0159353B1 (en) 1995-05-16 1995-05-16 Reduction powder and process thereof

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KR960040519A true KR960040519A (en) 1996-12-17
KR0159353B1 KR0159353B1 (en) 1999-01-15

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