JPS5690958A - Alloy cast steel for piercer and plug of plug mill or the like - Google Patents

Alloy cast steel for piercer and plug of plug mill or the like

Info

Publication number
JPS5690958A
JPS5690958A JP16777979A JP16777979A JPS5690958A JP S5690958 A JPS5690958 A JP S5690958A JP 16777979 A JP16777979 A JP 16777979A JP 16777979 A JP16777979 A JP 16777979A JP S5690958 A JPS5690958 A JP S5690958A
Authority
JP
Japan
Prior art keywords
plug
piercer
steel
alloy cast
cast steel
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.)
Granted
Application number
JP16777979A
Other languages
Japanese (ja)
Other versions
JPS5920746B2 (en
Inventor
Ryohei Niwa
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.)
Kurimoto Ltd
Kurimoto Iron Works Ltd
Original Assignee
Kurimoto Ltd
Kurimoto Iron Works 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 Kurimoto Ltd, Kurimoto Iron Works Ltd filed Critical Kurimoto Ltd
Priority to JP16777979A priority Critical patent/JPS5920746B2/en
Publication of JPS5690958A publication Critical patent/JPS5690958A/en
Publication of JPS5920746B2 publication Critical patent/JPS5920746B2/en
Expired legal-status Critical Current

Links

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  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To obtain an alloy cast steel with superior high temp. strength and hardness for a piercer and a plug mill used in a Mannesmann seamless steel pipe manufacturing system by adding a specified amount of N to a high-Mn high-Cr low-Ni steel.
CONSTITUTION: An alloy cast steel having a composition of 0.25W0.45% C, 0.25W 2.0% Si, 8.0W18.0% Mn, 6.0W19.0% Cr, 0.1W7.0% Ni and 0.02W0.45% N is used as a material for a piercer and a plug mill used in the manufacture of a seamless steel pipe from a red-hot billet by a Mannesmann system. To the steel may be added Co, Mo, V, W, Nb, Ta, Zr, Cu, Al, etc. This steel has characteristics such as superior hardness and strength at a temp. as high as 1,200°C.
COPYRIGHT: (C)1981,JPO&Japio
JP16777979A 1979-12-24 1979-12-24 Alloy cast steel for plugs such as piercers and plug mills Expired JPS5920746B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16777979A JPS5920746B2 (en) 1979-12-24 1979-12-24 Alloy cast steel for plugs such as piercers and plug mills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16777979A JPS5920746B2 (en) 1979-12-24 1979-12-24 Alloy cast steel for plugs such as piercers and plug mills

Publications (2)

Publication Number Publication Date
JPS5690958A true JPS5690958A (en) 1981-07-23
JPS5920746B2 JPS5920746B2 (en) 1984-05-15

Family

ID=15855943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16777979A Expired JPS5920746B2 (en) 1979-12-24 1979-12-24 Alloy cast steel for plugs such as piercers and plug mills

Country Status (1)

Country Link
JP (1) JPS5920746B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499158A (en) * 1980-03-05 1985-02-12 Hitachi, Ltd. Welded structural member having high erosion resistance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61170160A (en) * 1985-01-23 1986-07-31 Matsushita Electric Ind Co Ltd Input and output device of automatic equipment
JPS63237622A (en) * 1987-03-26 1988-10-04 Toshiba Corp Signal transmission equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499158A (en) * 1980-03-05 1985-02-12 Hitachi, Ltd. Welded structural member having high erosion resistance

Also Published As

Publication number Publication date
JPS5920746B2 (en) 1984-05-15

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