JPS55100931A - Preventing decarburization of high silicon spring steel material - Google Patents

Preventing decarburization of high silicon spring steel material

Info

Publication number
JPS55100931A
JPS55100931A JP657479A JP657479A JPS55100931A JP S55100931 A JPS55100931 A JP S55100931A JP 657479 A JP657479 A JP 657479A JP 657479 A JP657479 A JP 657479A JP S55100931 A JPS55100931 A JP S55100931A
Authority
JP
Japan
Prior art keywords
steel material
cooling
spring
cooling rate
contng
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
JP657479A
Other languages
Japanese (ja)
Other versions
JPS5814857B2 (en
Inventor
Manjiro Sato
Saburo Otani
Hideo Takahashi
Toshio Tomono
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 JP657479A priority Critical patent/JPS5814857B2/en
Publication of JPS55100931A publication Critical patent/JPS55100931A/en
Publication of JPS5814857B2 publication Critical patent/JPS5814857B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To reduce cost through preventing decarburization of ferrite to occur on the surface layer of steel material by specifically controlling cooling after hot-roll of spring-steel material contng. 1-3% of Si. CONSTITUTION:Spring-use steel material contng. 1-3% of Si is hot rolled and then cooled in the temperature range of 750-600 deg.C at a cooling rate between 15 deg.C/min and 200 deg.C/min. This condition enables to prevent ferrite from being decarburized without producing structure due to high-speed cooling. This cooling rate is easy to achieve by passing air through coiled steel wound in usual way after rolling operation. The process allows cooling rate faster than the conventional natural cooling, and therefore is effective in reducing production cost and can eliminate cutting or grinding work that is conventionally needed before spring formation.
JP657479A 1979-01-25 1979-01-25 Method for preventing decarburization of steel materials for high Si springs Expired JPS5814857B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP657479A JPS5814857B2 (en) 1979-01-25 1979-01-25 Method for preventing decarburization of steel materials for high Si springs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP657479A JPS5814857B2 (en) 1979-01-25 1979-01-25 Method for preventing decarburization of steel materials for high Si springs

Publications (2)

Publication Number Publication Date
JPS55100931A true JPS55100931A (en) 1980-08-01
JPS5814857B2 JPS5814857B2 (en) 1983-03-22

Family

ID=11642094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP657479A Expired JPS5814857B2 (en) 1979-01-25 1979-01-25 Method for preventing decarburization of steel materials for high Si springs

Country Status (1)

Country Link
JP (1) JPS5814857B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06145793A (en) * 1992-10-29 1994-05-27 Sumitomo Metal Ind Ltd Method for preventing decarburization of seamless steel tube
KR100435481B1 (en) * 1999-12-28 2004-06-10 주식회사 포스코 Method for manufacturing high carbon wire rod containing high silicon to reduce decarburization depth of its surface
KR100448623B1 (en) * 1999-12-28 2004-09-13 주식회사 포스코 Method for manufacturing high Si added medium carbon wire rod to reduce decarburization depth of its surface
KR100478088B1 (en) * 2000-12-21 2005-03-23 주식회사 포스코 A method for manufacturing spring steel without ferrite decaburization
KR100516503B1 (en) * 2001-12-22 2005-09-26 주식회사 포스코 A method for manufacturng spring steel without ferrite decarburization

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06145793A (en) * 1992-10-29 1994-05-27 Sumitomo Metal Ind Ltd Method for preventing decarburization of seamless steel tube
KR100435481B1 (en) * 1999-12-28 2004-06-10 주식회사 포스코 Method for manufacturing high carbon wire rod containing high silicon to reduce decarburization depth of its surface
KR100448623B1 (en) * 1999-12-28 2004-09-13 주식회사 포스코 Method for manufacturing high Si added medium carbon wire rod to reduce decarburization depth of its surface
KR100478088B1 (en) * 2000-12-21 2005-03-23 주식회사 포스코 A method for manufacturing spring steel without ferrite decaburization
KR100516503B1 (en) * 2001-12-22 2005-09-26 주식회사 포스코 A method for manufacturng spring steel without ferrite decarburization

Also Published As

Publication number Publication date
JPS5814857B2 (en) 1983-03-22

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