JPS5623306A - Production of seamless steel pipe - Google Patents
Production of seamless steel pipeInfo
- Publication number
- JPS5623306A JPS5623306A JP9879579A JP9879579A JPS5623306A JP S5623306 A JPS5623306 A JP S5623306A JP 9879579 A JP9879579 A JP 9879579A JP 9879579 A JP9879579 A JP 9879579A JP S5623306 A JPS5623306 A JP S5623306A
- Authority
- JP
- Japan
- Prior art keywords
- steel ingot
- unsolidified
- rolling
- filled
- condition
- 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
- Metal Rolling (AREA)
Abstract
PURPOSE: To improve metal flow and increase the yield and quality of products by blooming steel ingot under the condition that the unsolidified portion remains as it is.
CONSTITUTION: Killed steel ingot filled with water is made steel ingot filled with water by pouring water into the ingot immediately after the completion of cast and mold stripping is performed under the condition that the outer portion of the steel ingot is solidified and its center is unsolidified. After the molded steel ingot is applied to the soaking pit and the outer layer is soaked at the rolling temperature with 70W90% thickness solidification ratio, the steel ingot is bloomed under the condition that the unsolidified portion remains in the steel ingot and then rolling for making pipe is applied to the steel ingot. Since the unsolidified portion is moved to the rolling direction at blooming and the inner spaces of the top and end of rolled steel can be filled with the unsolidified material, the dicarded quantity of steel ingot at rolling can be decreased and, therefore, the yield is increased.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9879579A JPS5623306A (en) | 1979-08-01 | 1979-08-01 | Production of seamless steel pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9879579A JPS5623306A (en) | 1979-08-01 | 1979-08-01 | Production of seamless steel pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5623306A true JPS5623306A (en) | 1981-03-05 |
Family
ID=14229287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9879579A Pending JPS5623306A (en) | 1979-08-01 | 1979-08-01 | Production of seamless steel pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5623306A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4525917A (en) * | 1983-03-24 | 1985-07-02 | Armco Inc. | Process for preparing rimming or semi-killed steel ingots for rolling into slabs |
JPS60151366A (en) * | 1984-01-19 | 1985-08-09 | 株式会社山東鉄工所 | Continuous mercerization apparatus of fabric |
JPS60151365A (en) * | 1984-01-19 | 1985-08-09 | 株式会社山東鉄工所 | Mercerization method and apparatus of fabric |
JPS60155768A (en) * | 1984-01-23 | 1985-08-15 | 株式会社山東鉄工所 | Mercerization method and apparatus of fabric |
JPS6477168A (en) * | 1988-08-12 | 1989-03-23 | Hitachi Ltd | Formation of mos structure element for semiconductor substrate |
CN104190740A (en) * | 2014-07-15 | 2014-12-10 | 攀钢集团成都钢钒有限公司 | Production method of hot-rolling seamless steel pipe billet |
-
1979
- 1979-08-01 JP JP9879579A patent/JPS5623306A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4525917A (en) * | 1983-03-24 | 1985-07-02 | Armco Inc. | Process for preparing rimming or semi-killed steel ingots for rolling into slabs |
JPS60151366A (en) * | 1984-01-19 | 1985-08-09 | 株式会社山東鉄工所 | Continuous mercerization apparatus of fabric |
JPS60151365A (en) * | 1984-01-19 | 1985-08-09 | 株式会社山東鉄工所 | Mercerization method and apparatus of fabric |
JPS60155768A (en) * | 1984-01-23 | 1985-08-15 | 株式会社山東鉄工所 | Mercerization method and apparatus of fabric |
JPS6477168A (en) * | 1988-08-12 | 1989-03-23 | Hitachi Ltd | Formation of mos structure element for semiconductor substrate |
CN104190740A (en) * | 2014-07-15 | 2014-12-10 | 攀钢集团成都钢钒有限公司 | Production method of hot-rolling seamless steel pipe billet |
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