JPS55148714A - Inclusion fining method of high silicon spring steel - Google Patents

Inclusion fining method of high silicon spring steel

Info

Publication number
JPS55148714A
JPS55148714A JP5605079A JP5605079A JPS55148714A JP S55148714 A JPS55148714 A JP S55148714A JP 5605079 A JP5605079 A JP 5605079A JP 5605079 A JP5605079 A JP 5605079A JP S55148714 A JPS55148714 A JP S55148714A
Authority
JP
Japan
Prior art keywords
molten steel
slag
deoxidation
total
amount
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.)
Granted
Application number
JP5605079A
Other languages
Japanese (ja)
Other versions
JPS609564B2 (en
Inventor
Kiyoshi Shiaku
Hirofumi Sugawara
Kunio Ishimitsu
Matsuhide Aoki
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP5605079A priority Critical patent/JPS609564B2/en
Publication of JPS55148714A publication Critical patent/JPS55148714A/en
Publication of JPS609564B2 publication Critical patent/JPS609564B2/en
Expired legal-status Critical Current

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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE: To fine non-metallic inclusions and enhance the fatigue resistance of the captioned steel by adding silicon deoxidizers into the molten steel in a ladle, blowing inert gas and specifying the total 0 amount in the molten steel under stirring then adding flux thereto to control the slag to the composition stable to the Al in the molten steel thence performing Al deoxidation.
CONSTITUTION: After Si deoxidizers such as ferrosilicon of low Al and low Ti are added to the molten steel 3 in a ladle 1, a cover 2 is placed and the spacing above the slag 5 is made Ar gas atmosphere. Next, Ar gas is blown through the lance 4 immersed in the molten steel 3 to accelerate Si deoxidation reaction under stirring and reduce the total 0 amount in the molten steel to 40ppm or less. Next, the premelt flux containing CaO; about 50W90%, Al2O3; about 10W30%, CaF2; about 5W40% and containing about 80% or more in the total amount of these three is added to control the slag to the composition stable to the Al in the molten steel, after which Al and FeAl powders are blown together with inert gas through the lance 4, whereby the Al deoxidation is accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP5605079A 1979-05-07 1979-05-07 Inclusion refinement method for high silicon spring steel Expired JPS609564B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5605079A JPS609564B2 (en) 1979-05-07 1979-05-07 Inclusion refinement method for high silicon spring steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5605079A JPS609564B2 (en) 1979-05-07 1979-05-07 Inclusion refinement method for high silicon spring steel

Publications (2)

Publication Number Publication Date
JPS55148714A true JPS55148714A (en) 1980-11-19
JPS609564B2 JPS609564B2 (en) 1985-03-11

Family

ID=13016248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5605079A Expired JPS609564B2 (en) 1979-05-07 1979-05-07 Inclusion refinement method for high silicon spring steel

Country Status (1)

Country Link
JP (1) JPS609564B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158316A (en) * 1981-03-24 1982-09-30 Sumitomo Metal Ind Ltd Production of al-containing steel
JP2009074151A (en) * 2007-09-21 2009-04-09 Sanyo Special Steel Co Ltd Production method of steel excellent in rolling fatigue life
JP2009299168A (en) * 2008-06-17 2009-12-24 Kobe Steel Ltd Manufacturing method of steel for high strength steel wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158316A (en) * 1981-03-24 1982-09-30 Sumitomo Metal Ind Ltd Production of al-containing steel
JP2009074151A (en) * 2007-09-21 2009-04-09 Sanyo Special Steel Co Ltd Production method of steel excellent in rolling fatigue life
JP2009299168A (en) * 2008-06-17 2009-12-24 Kobe Steel Ltd Manufacturing method of steel for high strength steel wire

Also Published As

Publication number Publication date
JPS609564B2 (en) 1985-03-11

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