JPS5655521A - Production of steel material of superior hydrogen embrittlement resistance - Google Patents

Production of steel material of superior hydrogen embrittlement resistance

Info

Publication number
JPS5655521A
JPS5655521A JP12900279A JP12900279A JPS5655521A JP S5655521 A JPS5655521 A JP S5655521A JP 12900279 A JP12900279 A JP 12900279A JP 12900279 A JP12900279 A JP 12900279A JP S5655521 A JPS5655521 A JP S5655521A
Authority
JP
Japan
Prior art keywords
steel
molten steel
mold
steel material
pouring
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
JP12900279A
Other languages
Japanese (ja)
Inventor
Morio Kawasaki
Yujo Marukawa
Yoshio Sumitomo
Setsuo Okamoto
Norihiko Nozaki
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 JP12900279A priority Critical patent/JPS5655521A/en
Publication of JPS5655521A publication Critical patent/JPS5655521A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To produce a titled steel material easily and inexpensively by pouring the molten steel of limited Mn, P, S contents into a specific shape, allowing the same to solidify unidirectionally from the bottom to head part then applying drawing-down to the pouring direction.
CONSTITUTION: The molten steel contg. ≤0.20% C, 0.01W0.80% Si, 0.50W1.80% Mn, ≤ 0.030% P, and ≤0.025% S, and further, contg., if necessary, one or more kinds of 0.20W0.50% Cu, ≤0.20% Ni, ≤0.50% Cr, ≤0.30% Mo, ≤0.15% V, ≤0.10% Nb, ≤0.10% Al, ≤0.005% Ca, and comprising essentially Fe for the remainder is used. A mold 1 having a shape of H/D≤1 (H is the height of a steel ingot, and D the short side length in the horizontal section of the steel ingot) is placed on a molding board 2, and the inside wall surface of the mold is covered with a heat-insulating material 3. Said molten steel is poured into this mold 1, and the molten steel is covered with a heat-insulating meterial to allow substantially unidirectional solidification to take place from the bottom to the head part. After the unfrozen thickly segregated molten steel 5 is removed, drawing-down is applied in the pouring direction to hot-roll the steel which is then subjected to suitable heat treatment, whereby the steel material is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP12900279A 1979-10-06 1979-10-06 Production of steel material of superior hydrogen embrittlement resistance Pending JPS5655521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12900279A JPS5655521A (en) 1979-10-06 1979-10-06 Production of steel material of superior hydrogen embrittlement resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12900279A JPS5655521A (en) 1979-10-06 1979-10-06 Production of steel material of superior hydrogen embrittlement resistance

Publications (1)

Publication Number Publication Date
JPS5655521A true JPS5655521A (en) 1981-05-16

Family

ID=14998709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12900279A Pending JPS5655521A (en) 1979-10-06 1979-10-06 Production of steel material of superior hydrogen embrittlement resistance

Country Status (1)

Country Link
JP (1) JPS5655521A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075931A (en) * 1973-11-12 1975-06-21
JPS5099911A (en) * 1974-01-10 1975-08-08
JPS5187113A (en) * 1975-01-29 1976-07-30 Nippon Kokan Kk TAISUISOJUKIWARE SEITEIGOKINKO

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5075931A (en) * 1973-11-12 1975-06-21
JPS5099911A (en) * 1974-01-10 1975-08-08
JPS5187113A (en) * 1975-01-29 1976-07-30 Nippon Kokan Kk TAISUISOJUKIWARE SEITEIGOKINKO

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