JPS5629618A - Pressurized or reduced pressure type molten metal circulating treatment apparatus - Google Patents

Pressurized or reduced pressure type molten metal circulating treatment apparatus

Info

Publication number
JPS5629618A
JPS5629618A JP10548879A JP10548879A JPS5629618A JP S5629618 A JPS5629618 A JP S5629618A JP 10548879 A JP10548879 A JP 10548879A JP 10548879 A JP10548879 A JP 10548879A JP S5629618 A JPS5629618 A JP S5629618A
Authority
JP
Japan
Prior art keywords
molten metal
pressure
ladle
gas
pressurized
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP10548879A
Other languages
Japanese (ja)
Inventor
Takashi Omori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP10548879A priority Critical patent/JPS5629618A/en
Publication of JPS5629618A publication Critical patent/JPS5629618A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To perform the addition of a volatile substance and the treatment of flux exactly and with high efficiency by controlling the relations between the pressure of the upper and lower spaces in a ladle, the internal pressure of a circulating container, and the head of molten metal to specific condition. CONSTITUTION:After degassing, an inert gas is sent into the ladle 1 through pressure gas supply pipe 5 after closing a shut-down valve 19 in order to pressurize the upper and lower spaces 6, whereby the circulation of molten metal 2 is kept by means of a circulating gas under a pressurized condition. At this time, the gas pressure P1 of the ladle 1 and the gas pressure P2 of the circulating container 10 are regulated by the pressure regulating valves 7 and 21 so as to keep the relation P1>P2 and also the relation P1=P2+H in order to keep the head H of the molten metal. An alloy additive is added by a hopper 22 to the molten metal to dissolve it in the metal 2 without vaporization, and then the shut-down valve 19 is opened at P2=0 and P1=1 to drive a vacuum system. Afterwards, according to the pressure P2 of the circulating container 10, P1 is lowered in conformity with P1=P2+H and lastly at P1=0, vacuum treatment is started.
JP10548879A 1979-08-21 1979-08-21 Pressurized or reduced pressure type molten metal circulating treatment apparatus Pending JPS5629618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10548879A JPS5629618A (en) 1979-08-21 1979-08-21 Pressurized or reduced pressure type molten metal circulating treatment apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10548879A JPS5629618A (en) 1979-08-21 1979-08-21 Pressurized or reduced pressure type molten metal circulating treatment apparatus

Publications (1)

Publication Number Publication Date
JPS5629618A true JPS5629618A (en) 1981-03-25

Family

ID=14408970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10548879A Pending JPS5629618A (en) 1979-08-21 1979-08-21 Pressurized or reduced pressure type molten metal circulating treatment apparatus

Country Status (1)

Country Link
JP (1) JPS5629618A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925919A (en) * 1982-08-02 1984-02-10 Kawasaki Steel Corp Method for adding additive element of high vapor pressure to molten steel
JPS5939475A (en) * 1982-08-27 1984-03-03 Shin Meiwa Ind Co Ltd Copy working device
KR100724273B1 (en) 2006-09-01 2007-05-31 한국수자원공사 A deaired water making device for soil test

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925919A (en) * 1982-08-02 1984-02-10 Kawasaki Steel Corp Method for adding additive element of high vapor pressure to molten steel
JPS6212284B2 (en) * 1982-08-02 1987-03-18 Kawasaki Steel Co
JPS5939475A (en) * 1982-08-27 1984-03-03 Shin Meiwa Ind Co Ltd Copy working device
JPH0362509B2 (en) * 1982-08-27 1991-09-26 Shin Meiwa Ind Co Ltd
KR100724273B1 (en) 2006-09-01 2007-05-31 한국수자원공사 A deaired water making device for soil test

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