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1. WO2014104113 - STEEL FOR CARBURIZING

Publication Number WO/2014/104113
Publication Date 03.07.2014
International Application No. PCT/JP2013/084708
International Filing Date 25.12.2013
IPC
C22C 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C21D 1/06 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
06Surface hardening
C22C 38/60 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
CPC
C21D 1/06
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
06Surface hardening
C21D 2211/004
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
2211Microstructure comprising significant phases
004Dispersions; Precipitations
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/001
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
001containing N
C22C 38/002
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
002containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
C22C 38/005
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
005containing rare earths, i.e. Sc, Y, Lanthanides
Applicants
  • 新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP]/[JP]
Inventors
  • 小山 達也 KOYAMA Tatsuya
  • 久保田 学 KUBOTA Manabu
  • 吉田 卓 YOSHIDA Suguru
Agents
  • 志賀 正武 SHIGA Masatake
Priority Data
2012-28813128.12.2012JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) STEEL FOR CARBURIZING
(FR) ACIER POUR CÉMENTATION
(JA) 浸炭用鋼
Abstract
(EN) This steel has a chemical composition which contains, in mass%, 0.16-0.30% of C, 0.01-2.0% of Si, 0.35-1.45% of Mn, 0.05-3.0% of Cr, 0.001-0.2% of Al, 0.04-5.0% of Ni, 0.015%-1.0% of Sn, 0.004-0.05% of S, 0.003-0.03% of N, 0.005% or less of O, 0.025% or less of P, 0-1.0% of Mo, 0-1.0% of Cu, 0-0.005% of B, 0-0.3% of Nb, 0-0.3% of Ti, 0-1.0% of V, 0-0.01% of Ca, 0-0.01% of Mg, 0-0.05% of Zr, 0-0.1% of Te and 0-0.005% of a rare earth element, with the balance made up of Fe and impurities. If [Si%], [Ni%], [Al%] and [Sn%] are the contents of Si, Ni, Al and Sn in terms of mass%, the relation 42 ≥ 21 × [Si%] + 5 × [Ni%] + 40 × [Sn%] + 32 × [Al%] ≥ 8.5 is satisfied.
(FR) L'invention concerne un acier qui présente une composition chimique qui contient, en % en masse, 0,16 à 0,30 % de C, 0,01 à 2,0 % de Si, 0,35 à 1,45 % de Mn, 0,05 à 3,0 % de Cr, 0,001 à 0,2 % d'Al, 0,04 à 5,0 % de Ni, 0,015 % à 1,0 % de Sn, 0,004 à 0,05 % de S, 0,003 à 0,03 % de N, 0,005 % ou moins d'O, 0,025 % ou moins de P, 0 à 1,0 % de Mo, 0 à 1,0 % de Cu, 0 à 0,005 % de B, 0 à 0,3 % de Nb, 0 à 0,3 % de Ti, 0 à 1,0 % de V, 0 à 0,01 % de Ca, 0 à 0,01 % de Mg, 0 à 0,05 % de Zr, 0 à 0,1 % de Te et 0 à 0,005 % d'un élément de terres rares, le reste étant constitué de Fe et d'impuretés. Si [Si%], [Ni%], [Al%] et [Sn%] sont les teneurs en Si, Ni, Al et Sn en termes de % en masse, la relation 42 ≥ 21 × [Si%] + 5 × [Ni%] + 40 × [Sn%] + 32 × [Al%] ≥ 8,5 est satisfaite.
(JA)  本発明に係る鋼は、化学組成が、質量%で、C:0.16~0.30%、Si:0.01~2.0%、Mn:0.35~1.45%、Cr:0.05~3.0%、Al:0.001~0.2%、Ni:0.04~5.0%、Sn:0.015%~1.0%、S:0.004~0.05%、N:0.003~0.03%、O:0.005%以下、P:0.025%以下、Mo:0~1.0%、Cu:0~1.0%、B:0~0.005%、Nb:0~0.3%、Ti:0~0.3%、V:0~1.0%、Ca:0~0.01%、Mg:0~0.01%、Zr:0~0.05%、Te:0~0.1%、希土類元素:0~0.005%、および残部:Fe及び不純物であり、Si、Ni、Al及びSnの含有量を質量%で[Si%]、[Ni%]、[Al%]、[Sn%]と表したときに、「42≧21×[Si%]+5×[Ni%]+40×[Sn%]+32×[Al%]≧8.5」との関係を満足する。
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