JPS5511156A - Steel material for boiler improved workability - Google Patents

Steel material for boiler improved workability

Info

Publication number
JPS5511156A
JPS5511156A JP8367778A JP8367778A JPS5511156A JP S5511156 A JPS5511156 A JP S5511156A JP 8367778 A JP8367778 A JP 8367778A JP 8367778 A JP8367778 A JP 8367778A JP S5511156 A JPS5511156 A JP S5511156A
Authority
JP
Japan
Prior art keywords
boiler
plate
mold
outer layer
acid soluble
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
JP8367778A
Other languages
Japanese (ja)
Inventor
Toshio Takamatsu
Yasuo Otoguro
Kazuhide Shiozuka
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8367778A priority Critical patent/JPS5511156A/en
Publication of JPS5511156A publication Critical patent/JPS5511156A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To economically improve a high temperature strength, workability and toughness, by containing a specific quantity of acid soluble Al in a fixed extent of thickness on the outer layer of one or both faces of normal steel material for boiler.
CONSTITUTION: More than 0.01% or acid soluble Al is contained on one side, in case of steel plate for boiler and less than 0.1% of acid soluble Al is contained on both inner and outer side, in case of steel tube for boiler, in the extent being the thickness of outer layer more than 200μ to one side and less than 1/2 of total plate of both faces sum. In order to contain Al in the outer layer, Al foil, Al plate or Fe-Al plate, is sticked on the inner face of mold or molten metal is casted in a mold after applying or spraying Al powder and on occasion of carrying out continuous casting, ingot is made by blowing Al powder with inactive gas against the boundary face of the mold and molten metal and then, steel plate or tube is manufactured.
COPYRIGHT: (C)1980,JPO&Japio
JP8367778A 1978-07-10 1978-07-10 Steel material for boiler improved workability Pending JPS5511156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8367778A JPS5511156A (en) 1978-07-10 1978-07-10 Steel material for boiler improved workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8367778A JPS5511156A (en) 1978-07-10 1978-07-10 Steel material for boiler improved workability

Publications (1)

Publication Number Publication Date
JPS5511156A true JPS5511156A (en) 1980-01-25

Family

ID=13809103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8367778A Pending JPS5511156A (en) 1978-07-10 1978-07-10 Steel material for boiler improved workability

Country Status (1)

Country Link
JP (1) JPS5511156A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185693A (en) * 1982-04-23 1983-10-29 Koyo Seiko Co Ltd Diurea grease and its preparation
JPS62250097A (en) * 1986-04-22 1987-10-30 Nippon Oil Co Ltd Diurea grease composition
JPH02242896A (en) * 1982-04-23 1990-09-27 Koyo Seiko Co Ltd Production of diurea-based grease
US8703678B2 (en) 2006-10-06 2014-04-22 Idemitsu Kosan Co., Ltd. Grease

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52131919A (en) * 1976-04-28 1977-11-05 Nippon Steel Corp Production of a1-s# killed steel plate by direct fot rolling of continuous cast slab

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52131919A (en) * 1976-04-28 1977-11-05 Nippon Steel Corp Production of a1-s# killed steel plate by direct fot rolling of continuous cast slab

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185693A (en) * 1982-04-23 1983-10-29 Koyo Seiko Co Ltd Diurea grease and its preparation
JPH02242896A (en) * 1982-04-23 1990-09-27 Koyo Seiko Co Ltd Production of diurea-based grease
JPH0369960B2 (en) * 1982-04-23 1991-11-05 Koyo Seiko Kk
JPS62250097A (en) * 1986-04-22 1987-10-30 Nippon Oil Co Ltd Diurea grease composition
US8703678B2 (en) 2006-10-06 2014-04-22 Idemitsu Kosan Co., Ltd. Grease

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