JPS57158316A - Production of al-containing steel - Google Patents

Production of al-containing steel

Info

Publication number
JPS57158316A
JPS57158316A JP56043737A JP4373781A JPS57158316A JP S57158316 A JPS57158316 A JP S57158316A JP 56043737 A JP56043737 A JP 56043737A JP 4373781 A JP4373781 A JP 4373781A JP S57158316 A JPS57158316 A JP S57158316A
Authority
JP
Japan
Prior art keywords
molten steel
steel
contg
sio
added
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
JP56043737A
Other languages
Japanese (ja)
Inventor
Hiroyuki Ichihashi
Ryuka Ikeda
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP56043737A priority Critical patent/JPS57158316A/en
Publication of JPS57158316A publication Critical patent/JPS57158316A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

PURPOSE: To produce clean Al-contg. steel by adding an Si-contg. material to the molten steel after refining by decarbonization to deoxidize the steel by Si, adding specific flux thereto to reduce the activity of SiO2 and further adding an Al-contg. material.
CONSTITUTION: In the stage of tapping the molten steel refined by decarbonization into a ladle, an Si-contg. material is added thereto to deoxidize the same by Si and the slag floating on the surface of the molten steel is removed as far as possible. Next, CaO-Al2O3-SiO2-CaF2 type flux is blown with an inert gas as a carrier gas into the molten steel in the ladle to control the activity of the SiO2 which is the product of deoxidation formed by this to ≤10-3. The flux is added at about 0.5W30kg amts. per ton of the molten steel. Thence, the molten steel is forcibly agitated, after which a required amt. of Al is added to the molten steel so as to conform to the required value of solAl, whereby the concn. of solAl as Al-killed steel is adjusted.
COPYRIGHT: (C)1982,JPO&Japio
JP56043737A 1981-03-24 1981-03-24 Production of al-containing steel Pending JPS57158316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043737A JPS57158316A (en) 1981-03-24 1981-03-24 Production of al-containing steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043737A JPS57158316A (en) 1981-03-24 1981-03-24 Production of al-containing steel

Publications (1)

Publication Number Publication Date
JPS57158316A true JPS57158316A (en) 1982-09-30

Family

ID=12672089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043737A Pending JPS57158316A (en) 1981-03-24 1981-03-24 Production of al-containing steel

Country Status (1)

Country Link
JP (1) JPS57158316A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103741A (en) * 1990-08-23 1992-04-06 Nkk Corp Manufacture of bearing steel
CN102943150A (en) * 2012-11-26 2013-02-27 湖南华菱湘潭钢铁有限公司 Refined slag control method
JP2020111773A (en) * 2019-01-10 2020-07-27 日本製鉄株式会社 MELTING METHOD OF HIGH Al-CONTAINING STEEL
CN115449596A (en) * 2022-09-13 2022-12-09 石横特钢集团有限公司 Method for controlling content of aluminum in molten steel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108313A (en) * 1976-03-10 1977-09-10 Kawasaki Steel Co Production of si semikilled ingot having good surface
JPS55148714A (en) * 1979-05-07 1980-11-19 Kobe Steel Ltd Inclusion fining method of high silicon spring steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108313A (en) * 1976-03-10 1977-09-10 Kawasaki Steel Co Production of si semikilled ingot having good surface
JPS55148714A (en) * 1979-05-07 1980-11-19 Kobe Steel Ltd Inclusion fining method of high silicon spring steel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103741A (en) * 1990-08-23 1992-04-06 Nkk Corp Manufacture of bearing steel
CN102943150A (en) * 2012-11-26 2013-02-27 湖南华菱湘潭钢铁有限公司 Refined slag control method
CN102943150B (en) * 2012-11-26 2015-03-04 湖南华菱湘潭钢铁有限公司 Refined slag control method
JP2020111773A (en) * 2019-01-10 2020-07-27 日本製鉄株式会社 MELTING METHOD OF HIGH Al-CONTAINING STEEL
CN115449596A (en) * 2022-09-13 2022-12-09 石横特钢集团有限公司 Method for controlling content of aluminum in molten steel
CN115449596B (en) * 2022-09-13 2024-01-26 石横特钢集团有限公司 Method for controlling aluminum content in molten steel

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