IN2014DN02151A - - Google Patents

Info

Publication number
IN2014DN02151A
IN2014DN02151A IN2151DEN2014A IN2014DN02151A IN 2014DN02151 A IN2014DN02151 A IN 2014DN02151A IN 2151DEN2014 A IN2151DEN2014 A IN 2151DEN2014A IN 2014DN02151 A IN2014DN02151 A IN 2014DN02151A
Authority
IN
India
Prior art keywords
hot forging
wire
steel bar
rolled steel
ferrite
Prior art date
Application number
Inventor
Akira Shiga
Masayuki Horimoto
Yoshihiro Daitoh
Hideki Imataka
Yusuke Usui
Tetsuya Ohashi
Original Assignee
Nippon Steel & Sumitomo Metal 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 & Sumitomo Metal Corp filed Critical Nippon Steel & Sumitomo Metal Corp
Publication of IN2014DN02151A publication Critical patent/IN2014DN02151A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite

Landscapes

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

Abstract

Provided is a rolled steel bar or wire for hot forging having excellent bending fatigue strength surface fatigue strength abrasion resistance and machinability even after hot forging. This rolled steel bar or wire for hot forging has a chemical composition containing C Si Mn S Cr Mo (optional) Al and N with the remainder comprising Fe and impurities. The chemical composition furthermore has 1.60 to 2.10 of fn1 as defined by the formula (1). The structure of the rolled steel bar or wire for hot forging comprises a ferrite pearlite structure a ferrite pearlite bainite structure or a ferrite bainite structure. Upon examination of 15 fields of view randomly selected in a cross section so that each field of view has an area of 62 500 µm the maximum/minimum average ferrite particle diameter is 2.0 or less. fn1 = Cr + 2 × Mo (1). The corresponding element content (mass%) is substituted for each element symbol in the formula (1).
IN2151DEN2014 2011-08-31 2012-08-22 IN2014DN02151A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011189668 2011-08-31
PCT/JP2012/071118 WO2013031587A1 (en) 2011-08-31 2012-08-22 Rolled steel bar or wire for hot forging

Publications (1)

Publication Number Publication Date
IN2014DN02151A true IN2014DN02151A (en) 2015-05-15

Family

ID=47756079

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2151DEN2014 IN2014DN02151A (en) 2011-08-31 2012-08-22

Country Status (6)

Country Link
US (1) US20140363329A1 (en)
JP (1) JP5561436B2 (en)
KR (1) KR101552449B1 (en)
CN (1) CN103797144B (en)
IN (1) IN2014DN02151A (en)
WO (1) WO2013031587A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5790517B2 (en) * 2012-01-25 2015-10-07 新日鐵住金株式会社 Rolled steel bar or wire rod for hot forging
JP6558016B2 (en) * 2015-03-26 2019-08-14 日本製鉄株式会社 Carburized machine structural parts
CN107429359B (en) * 2015-03-31 2020-05-19 日本制铁株式会社 Hot-rolled rod and wire material, component, and method for producing hot-rolled rod and wire material
JP6794012B2 (en) * 2015-12-10 2020-12-02 山陽特殊製鋼株式会社 Mechanical structural steel with excellent grain coarsening resistance, bending fatigue resistance, and impact resistance
JP2021127497A (en) * 2020-02-13 2021-09-02 山陽特殊製鋼株式会社 Steel for machine structure with excellent grain coarsening resistance that can omit normalizing after hot forging
JP7417171B2 (en) * 2020-09-30 2024-01-18 日本製鉄株式会社 steel material
WO2022071420A1 (en) * 2020-09-30 2022-04-07 日本製鉄株式会社 Steel material
CN114574751B (en) * 2022-03-15 2022-08-30 建龙北满特殊钢有限责任公司 Production method of HRB400E earthquake-resistant steel bar for building

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3725666B2 (en) * 1997-08-05 2005-12-14 新日本製鐵株式会社 Manufacturing method of carburized shaft parts
JP3954772B2 (en) 2000-04-26 2007-08-08 新日本製鐵株式会社 Shaped material for high-temperature carburized parts with excellent grain coarsening prevention characteristics and manufacturing method thereof
JP4899902B2 (en) * 2007-02-05 2012-03-21 住友金属工業株式会社 High temperature carburizing steel
JP4888277B2 (en) * 2007-08-24 2012-02-29 住友金属工業株式会社 Hot rolled steel bar or wire rod
JP4445561B2 (en) * 2008-07-15 2010-04-07 新日本製鐵株式会社 Continuous casting slab of steel and method for producing the same
CN102597290A (en) * 2009-11-05 2012-07-18 住友金属工业株式会社 Hot-rolled steel bar or wire rod
JP5521970B2 (en) * 2010-10-20 2014-06-18 新日鐵住金株式会社 Cold forging and nitriding steel, cold forging and nitriding steel and cold forging and nitriding parts
JP5597563B2 (en) * 2011-02-01 2014-10-01 新日鐵住金株式会社 Nitriding steel and nitride parts
JP5656908B2 (en) * 2012-04-18 2015-01-21 Ｄｏｗａサーモテック株式会社 Nitride steel member and manufacturing method thereof

Also Published As

Publication number Publication date
KR101552449B1 (en) 2015-09-10
JPWO2013031587A1 (en) 2015-03-23
CN103797144A (en) 2014-05-14
WO2013031587A1 (en) 2013-03-07
CN103797144B (en) 2016-07-06
KR20140056378A (en) 2014-05-09
US20140363329A1 (en) 2014-12-11
JP5561436B2 (en) 2014-07-30

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