JPS55133804A - Manufacture of wire rod and steel bar superior in mechanical property - Google Patents

Manufacture of wire rod and steel bar superior in mechanical property

Info

Publication number
JPS55133804A
JPS55133804A JP4147479A JP4147479A JPS55133804A JP S55133804 A JPS55133804 A JP S55133804A JP 4147479 A JP4147479 A JP 4147479A JP 4147479 A JP4147479 A JP 4147479A JP S55133804 A JPS55133804 A JP S55133804A
Authority
JP
Japan
Prior art keywords
wire rod
steel bar
mechanical property
strength
improved
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
JP4147479A
Other languages
Japanese (ja)
Inventor
Masashi Takahashi
Kenji Aihara
Susumu Kanbara
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 JP4147479A priority Critical patent/JPS55133804A/en
Publication of JPS55133804A publication Critical patent/JPS55133804A/en
Pending legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE: To manufacture the excellent wire rod and steel bar improved both of strength and ductility, by finishing the steel containing the specified amount of carbon through the hot rolling pass at the specified temperature range with 10% or higher reduction ratio of the finish rolling work.
CONSTITUTION: At hot rolling the steel containing 0.2W2.5% carbon into the wire rod and steel bar, the finish rolling is carried out through the hot rolling work at the temperature range 800W450°C with 10% or more reduction ratio of the finish rolling work; hereby, both of strength and ductility are improved, and the wire rod and steel bar superior in the mechanical property are manufactured. If the carbon content is less than 0.2%, the mechanical property is scarcely improved, and if it is not less than 2.5%, the improvement of strength is not recognized. If the lowest rolling temperature is lower than 450°C, the pearlite structure is not formed, and if it exceeds 800°C, the fine pearlite structure is not formed, so that the ductility and strength are not sufficiently improved.
COPYRIGHT: (C)1980,JPO&Japio
JP4147479A 1979-04-04 1979-04-04 Manufacture of wire rod and steel bar superior in mechanical property Pending JPS55133804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4147479A JPS55133804A (en) 1979-04-04 1979-04-04 Manufacture of wire rod and steel bar superior in mechanical property

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4147479A JPS55133804A (en) 1979-04-04 1979-04-04 Manufacture of wire rod and steel bar superior in mechanical property

Publications (1)

Publication Number Publication Date
JPS55133804A true JPS55133804A (en) 1980-10-18

Family

ID=12609351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4147479A Pending JPS55133804A (en) 1979-04-04 1979-04-04 Manufacture of wire rod and steel bar superior in mechanical property

Country Status (1)

Country Link
JP (1) JPS55133804A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183202A (en) * 1984-03-01 1985-09-18 Bridgestone Corp Radial tire with high durability
JPH0456727A (en) * 1990-06-27 1992-02-24 Nkk Corp Production of high strength steel for reinforcing bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60183202A (en) * 1984-03-01 1985-09-18 Bridgestone Corp Radial tire with high durability
US4628977A (en) * 1984-03-01 1986-12-16 Bridgestone Corporation High-durable pneumatic radial tires
JPH0456727A (en) * 1990-06-27 1992-02-24 Nkk Corp Production of high strength steel for reinforcing bar

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