KR890010223A - Molten metal selection method and apparatus - Google Patents

Molten metal selection method and apparatus Download PDF

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Publication number
KR890010223A
KR890010223A KR1019880017424A KR880017424A KR890010223A KR 890010223 A KR890010223 A KR 890010223A KR 1019880017424 A KR1019880017424 A KR 1019880017424A KR 880017424 A KR880017424 A KR 880017424A KR 890010223 A KR890010223 A KR 890010223A
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South Korea
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molten metal
bubbling
gas
vessel
pressure
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KR1019880017424A
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Korean (ko)
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KR930005065B1 (en
Inventor
도시오 이시이
유다까 오꾸보
슈조 후꾸다
Original Assignee
니이미야 유
엔 케이케이 코퍼레이션
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Priority claimed from JP62326723A external-priority patent/JPH01170556A/en
Priority claimed from JP62326722A external-priority patent/JPH01170555A/en
Priority claimed from JP311288A external-priority patent/JP2629225B2/en
Application filed by 니이미야 유, 엔 케이케이 코퍼레이션 filed Critical 니이미야 유
Publication of KR890010223A publication Critical patent/KR890010223A/en
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Publication of KR930005065B1 publication Critical patent/KR930005065B1/en

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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/072Treatment with gases
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56Manufacture of steel by other methods
    • C21C5/567Manufacture of steel by other methods operating in a continuous way
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0081Treating and handling under pressure

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

내용 없음No content

Description

용융금속정선 방법 및 장치Molten metal selection method and apparatus

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 배치프로세스로서 용융금속을 정선하는 본 발명의 장치를 개략적으로 도시하는 단면도.1 is a cross-sectional view schematically showing the apparatus of the present invention for selecting molten metal as a batch process.

제2도는 배치프로세스로서 용융금속을 정선하는 본 발명의 또 다른 장치를 개략적으로 예시한 단면도.2 is a schematic cross-sectional view of yet another apparatus of the present invention for selecting molten metal as a batch process.

제3도는 U자형 용기를 사용하여 용융금속을 연속적으로 정선하는 본 발명의 장치를 개략적으로 예시하는 단면도.3 is a cross-sectional view schematically illustrating the apparatus of the present invention for continuously selecting molten metal using a U-shaped container.

Claims (18)

용융금속속에 용해될 수 있는 가스를 증가압력하의 용융금속에 버블링 하면서, 용융금속에 부유하는 내포물을 버블링에 의해 발생된 가스 버블에 트랩하고, 상기 가스는 상기 용융금속에 용해하는 버블링 단계와 가스가 용해된 용융금속의 압력을 감소시키는 것에 의해 용융금속 속에 미소가스 버블을 발생시키고, 용융금속에 부유하는 내포물을 압력 감소에 의해 발생되는 미소가스 버블에 트랩하는 압력 감소단계와, 용융금속 표면으로 올라오는 내포물을 제거하는 내포물 제거단계로 구성되는 것을 특징으로 하는 용융금속 정선 방법.A bubbling step of trapping inclusions suspended in the molten metal in a gas bubble generated by bubbling, while bubbling a gas that can be dissolved in the molten metal to the molten metal under an increasing pressure, and the gas is dissolved in the molten metal. And a pressure reduction step of generating micro gas bubbles in the molten metal by reducing the pressure of the molten metal in which the gas is dissolved, and trapping the inclusions suspended in the molten metal in the micro gas bubbles generated by the pressure reduction. Molten metal selection method, characterized in that consisting of the inclusions removing step to remove the inclusions to the surface. 제1항에 있어서, 용융금속에 용해될 수 있는 가스는 질소와 수소를 포함하는 것을 특징으로 하는 용융금속 정선 방법.The method of claim 1, wherein the gas that can be dissolved in the molten metal comprises nitrogen and hydrogen. 제1항에 있어서, 용융금속에 작용되는 압력은 1 내지 10atm인 것을 특징으로 하는 용융금속 정선 방법The method of claim 1, wherein the pressure applied to the molten metal is 1 to 10 atm. 제1항에 있어서, 상기 압력감소 단계는 여러단계로 압력을 감소하는 것으로 구성되는 것을 특징으로 하는 용융금속 정선 방법.2. The method of claim 1, wherein said pressure reducing step comprises reducing the pressure in several steps. 제1항에 있어서, 버블링 단계의 버블링에 의해 발생한 가스버블에 트랩된 내포물이 위쪽으로 상승할 때 용융금속의 표면에 정자기장을 작용하는 것에 의해 용융금속 표면의 플러터를 억제하는 단계를 포함하는 것을 특징으로 하는 용융금속 정선 방법.2. The method of claim 1, further comprising suppressing the flutter of the molten metal surface by applying a static magnetic field to the surface of the molten metal when the inclusion trapped in the gas bubble generated by the bubbling of the bubbling step rises upward. Molten metal selection method, characterized in that. 제1항에 있어서, 압력 감소 단계의 버블링에 의해 발생한 가스버블에 트랩된 내포물이 위쪽으로 상승할때 용융금속의 표면에 정자기장을 작용하는 것에 의해 용융금속 표면의 플러터를 억제하는 단계를 포함하는 것을 특징으로 하는 용융금속 정선 방법.2. The method of claim 1, comprising suppressing the flutter on the surface of the molten metal by acting a static magnetic field on the surface of the molten metal as the inclusion trapped in the gas bubble caused by the bubbling of the pressure reduction step rises upwards. Molten metal selection method, characterized in that. 제5항에 있어서, 상기 전자기장은 1000 내지 5000가우스 범위의 자력선속을 갖는 정자기장인 것을 특징으로 하는 용융금속 정선 방법.The method of claim 5, wherein the electromagnetic field is a static magnetic field having a magnetic flux in the range of 1000 to 5000 gauss. 제6항에 있어서, 상기 전자기장은 1000 내지 5000가우스 범위의 자력선속을 갖는 정자기장인 것을 특징으로 하는 용융금속 정선 방법.The method of claim 6, wherein the electromagnetic field is a static magnetic field having a magnetic flux in the range of 1000 to 5000 gauss. 제1항에 있어서, 상기 버블링 단계의 버블링시 용융금속을 교반하는 단계를 포함하는 것을 특징으로 하는 용융금속 정선 방법.2. The method of claim 1, comprising stirring the molten metal during bubbling of the bubbling step. 제9항에 있어서, 상기 교반단계는 저주파 전자기력을 교반하는 것으로 구성되는 것을 특징으로 하는 용융금속 정선 방법.10. The method of claim 9, wherein the stirring step comprises agitating low frequency electromagnetic forces. 제1항에 있어서, 상기 버블링 단계의 버블링시 용융금속을 가열하는 단계를 포함하는 것을 특징으로 하는 용융금속 정선 방법.The method of claim 1, comprising the step of heating the molten metal during the bubbling of the bubbling step. 제11항에 있어서, 상기 가열단계는 고주파 전자기력으로 가열하는 것으로 구성되는 것을 특징으로 하는 용융금속 정선 방법.12. The method of claim 11, wherein said heating step comprises heating with high frequency electromagnetic force. 제1항에 있어서, 상기 압력 감소 단계에서 처리된 용융금속을 진공하서 탈기하는 단계를 포함하는 것을 특징으로 하는 용융금속 정선 방법.2. The method of claim 1, comprising degassing the molten metal treated in the pressure reducing step by vacuum. 상단부에서는 용용금속을 주입하기 위한 인랫, 저부에서는 용융금속을 배출하기 위한 아우플랫을 구비하는, 용융금속이 그 정지압력에 의해 가압될 수 있도록 하기 위한 제1용기와, 저부에서는 가압용융금속을 위한 유입포오트, 상단부에서는 용융금속을 위한 유출 포오트를 구비하는, 용융금속을 위쪽으로 상승시키면서 용융금속의 압력을 감소시키기 위한 제 2용기와 제 1용기와 제 2용기를 연결하는 연락관과, 제1용기의 저부에 위치 선정된 용융금속에 용해 될 수 있는 가스를 버블링 하기 위한 제1 버블링 장치로 구성되는 것을 특징으로 하는 용융금속 정선 장치.A first vessel for allowing molten metal to be pressurized by its stop pressure, and a bottom for injecting molten metal at the upper end and an out-flat for discharging the molten metal at the bottom and a pressurized molten metal at the bottom. An inlet port, at the upper end thereof, having an outlet port for molten metal, a connecting tube connecting the second vessel to the first vessel and the second vessel for reducing the pressure of the molten metal while raising the molten metal upward; 1. A molten metal selecting device, comprising: a first bubbling device for bubbling a gas that can be dissolved in a molten metal positioned at a bottom of a container. 제14항에 있어서, 상기 연락관에 배치된 제 2 버블링 장치를 포함하는 것을 특징으로 하는 용융금속 정선 장치.15. The apparatus of claim 14, comprising a second bubbling device disposed in said contact tube. 제14항에 있어서, 상기 제 2용기내에 배치된 용융금속을 배출하기 위한 유출포오트에 연결되는 진공저장 용기를 포함하는 것을 특징으로 하는 용융금속 정선 장치.15. The apparatus of claim 14, comprising a vacuum storage vessel connected to an outlet for discharging the molten metal disposed in the second vessel. 제14항에 있어서, 버블링된 가스의 일부를 배출하기 위한 가스저장 챔버를 포함하는 것을 특징으로 하는 용융금속 정선 장치.15. The apparatus of claim 14, comprising a gas storage chamber for discharging a portion of the bubbled gas. 제14항에 있어서, 상기 제1용기는 제1용기 둘레에 배치된 제 1용기내의 용융금속을 교반하기 위한 전자기코일을 갖는 것을 특징으로 하는 용융금속 정선 장치.15. The apparatus of claim 14, wherein the first vessel has an electromagnetic coil for stirring the molten metal in the first vessel disposed around the first vessel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880017424A 1987-12-25 1988-12-24 Method for cleaning molten metal and apparatus therefor KR930005065B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP326,723 1987-12-25
JP326,722 1987-12-25
JP62326723A JPH01170556A (en) 1987-12-25 1987-12-25 Cleaning method for molten metal
JP62326722A JPH01170555A (en) 1987-12-25 1987-12-25 Cleaning method for molten metal
JP3,112 1988-01-12
JP3,113 1988-01-12
JP311388 1988-01-12
JP311288A JP2629225B2 (en) 1988-01-12 1988-01-12 Method for cleaning molten metal

Publications (2)

Publication Number Publication Date
KR890010223A true KR890010223A (en) 1989-08-07
KR930005065B1 KR930005065B1 (en) 1993-06-15

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KR1019880017424A KR930005065B1 (en) 1987-12-25 1988-12-24 Method for cleaning molten metal and apparatus therefor

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EP (1) EP0322763B1 (en)
KR (1) KR930005065B1 (en)
AU (1) AU605949B2 (en)
BR (1) BR8806870A (en)
CA (1) CA1337744C (en)
DE (1) DE3883190T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188619A (en) * 1988-01-21 1989-07-27 Nkk Corp Method for rh vacuum degasification
CN104404205B (en) * 2014-10-27 2017-02-08 北京科技大学 Method for removing microscopic nonmetallic inclusion in molten steel by using nitrogen-increasing nitrogen-precipitating process

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168461B (en) * 1959-07-10 1964-04-23 Fischer Ag Georg Process for treating molten metal, in particular molten steel
AT256156B (en) * 1961-10-13 1967-08-10 Wilhelm Dipl Ing Dr Tech Stich Process and device for high pressure heat treatment in vacuum produced steel
FR1359312A (en) * 1963-03-14 1964-04-24 Siderurgie Fse Inst Rech Improvements to the degassing processes of molten metals
SE311533B (en) * 1963-11-11 1969-06-16 Asea Ab
DE1583287C3 (en) * 1967-11-30 1973-10-11 Salzgitter Ag, 1000 Berlin Und 3321 Salzgitter Device for carrying out reactions between liquids and gases, in particular for refining pig iron with oxygen
SE329410B (en) * 1968-01-31 1970-10-12 Asea Ab
BE735159A (en) * 1969-06-25 1969-12-29
HU179333B (en) * 1978-10-04 1982-09-28 Vasipari Kutato Intezet Method and apparatus for decreasing the unclusion contents and refining the structure of steels
FR2491954A1 (en) * 1980-10-14 1982-04-16 Pechiney Aluminium DEVICE FOR TREATING A LIQUID METAL BATH BY INJECTING GAS

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Publication number Publication date
KR930005065B1 (en) 1993-06-15
EP0322763B1 (en) 1993-08-11
CA1337744C (en) 1995-12-19
DE3883190D1 (en) 1993-09-16
EP0322763A3 (en) 1990-02-07
BR8806870A (en) 1989-08-29
AU2703888A (en) 1989-08-17
EP0322763A2 (en) 1989-07-05
AU605949B2 (en) 1991-01-24
DE3883190T2 (en) 1994-01-05

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