JPS5655521A - Production of steel material of superior hydrogen embrittlement resistance - Google Patents
Production of steel material of superior hydrogen embrittlement resistanceInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-10-06 JP JP12900279A patent/JPS5655521A/en active Pending
Patent Citations (3)
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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