JPS579822A - Manufacture of steel products for line pipe with superior cleanliness - Google Patents
Manufacture of steel products for line pipe with superior cleanlinessInfo
- Publication number
- JPS579822A JPS579822A JP8425780A JP8425780A JPS579822A JP S579822 A JPS579822 A JP S579822A JP 8425780 A JP8425780 A JP 8425780A JP 8425780 A JP8425780 A JP 8425780A JP S579822 A JPS579822 A JP S579822A
- Authority
- JP
- Japan
- Prior art keywords
- manufacture
- steel
- steel products
- line pipe
- molten
- 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
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To manufacture the titled steel products with less CaS cluster inclusion by adding a specified amount of Ca to molten Al killed steel having a restricted composition so as to regulate the S and Al contents of the molten steel.
CONSTITUTION: Molten steel contg., by wt., 0.05W0.20% C, ≤0.50% Si, 0.20W 2.00% Mn and ≤0.040% P or further contg. ≥1 kinds among ≤0.100% each of Nb and V, ≤0.5% each of Cu, Ni and Cr and 0.100W2.000% Mo is treated with ≤70ppm Ca to fix sulfide as CaS, thereby controlling the Al content of the molten steel to 0.001W0.020% as well as reducing the S content to ≤20ppm. Thus, steel products for a line pipe with less CaS cluster inclusion and superior cleanliness can be manufactured.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8425780A JPS579822A (en) | 1980-06-20 | 1980-06-20 | Manufacture of steel products for line pipe with superior cleanliness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8425780A JPS579822A (en) | 1980-06-20 | 1980-06-20 | Manufacture of steel products for line pipe with superior cleanliness |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS579822A true JPS579822A (en) | 1982-01-19 |
Family
ID=13825395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8425780A Pending JPS579822A (en) | 1980-06-20 | 1980-06-20 | Manufacture of steel products for line pipe with superior cleanliness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS579822A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01195238A (en) * | 1988-01-28 | 1989-08-07 | Nippon Steel Corp | Manufacture of very low s and very low al steel |
JP2001011528A (en) * | 1999-06-24 | 2001-01-16 | Kawasaki Steel Corp | Method for melting steel excellent in hydrogen induced cracking resistance |
CN112593038A (en) * | 2020-12-23 | 2021-04-02 | 唐山燕山钢铁有限公司 | Smelting and pouring process of L245 pipeline steel |
-
1980
- 1980-06-20 JP JP8425780A patent/JPS579822A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01195238A (en) * | 1988-01-28 | 1989-08-07 | Nippon Steel Corp | Manufacture of very low s and very low al steel |
JPH0639614B2 (en) * | 1988-01-28 | 1994-05-25 | 新日本製鐵株式会社 | Ultra-low S, ultra-low A (1) steel manufacturing method |
JP2001011528A (en) * | 1999-06-24 | 2001-01-16 | Kawasaki Steel Corp | Method for melting steel excellent in hydrogen induced cracking resistance |
CN112593038A (en) * | 2020-12-23 | 2021-04-02 | 唐山燕山钢铁有限公司 | Smelting and pouring process of L245 pipeline steel |
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