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1. WO2017043609 - NITRIDED STEEL COMPONENT AND MANUFACTURING METHOD THEREOF

Publication Number WO/2017/043609
Publication Date 16.03.2017
International Application No. PCT/JP2016/076529
International Filing Date 08.09.2016
IPC
C23C 8/26 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
8Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
06using gases
08only one element being applied
24Nitriding
26of ferrous surfaces
C21D 9/00 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
C21D 9/30 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
30for crankshafts; for camshafts
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
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 1/76
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
74Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
76Adjusting the composition of the atmosphere
C21D 3/08
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
3Diffusion processes for extraction of non-metals; Furnaces therefor
02Extraction of non-metals
08Extraction of nitrogen
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 38/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
02containing silicon
C22C 38/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
04containing manganese
Applicants
  • 新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP]/[JP]
Inventors
  • 梅原 崇秀 UMEHARA, Takahide
  • 祐谷 将人 YUYA, Masato
  • 大藤 善弘 DAITO, Yoshihiro
Agents
  • 青木 篤 AOKI, Atsushi
  • 石田 敬 ISHIDA, Takashi
  • 古賀 哲次 KOGA, Tetsuji
  • 亀松 宏 KAMEMATSU, Hiroshi
  • 福地 律生 FUKUCHI, Norio
  • 齋藤 学 SAITO, Manabu
  • 中村 朝幸 NAKAMURA, Tomoyuki
Priority Data
2015-17649808.09.2015JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) NITRIDED STEEL COMPONENT AND MANUFACTURING METHOD THEREOF
(FR) COMPOSANT EN ACIER NITRURÉ ET SON PROCÉDÉ DE FABRICATION
(JA) 窒化処理鋼部品及びその製造方法
Abstract
(EN) This nitrided steel component has excellent bending straightenability and bending fatigue characteristics and is capable of answering the need for components that are smaller and lighter or that have a higher load capacity, and is characterized in that the steel material comprises, in mass%, C: 0.2-0.6%, Si: 0.05-1.5%, Mn: 0.2-2.5%, P: 0.025% or less, S: 0.003-0.05%, Cr: 0.05-0.5%, Al: 0.01-0.05% and N: 0.003-0.025%, the remainder being Fe and impurities, and is characterized by comprising a compound layer no more than 3μm thick formed on the steel surface and comprising iron, nitrogen and carbon, and a cured layer formed below the compound layer, wherein the effective cured layer thickness is 160-410μm.
(FR) Cette invention concerne un composant en acier nitruré présentant d'excellentes caractéristiques de redressage et de résistance à la fatigue en flexion et en mesure de répondre au besoin de composants de plus petit encombrement et plus légers ou présentant une capacité de charge supérieure. Ledit composant est caractérisé en ce que le matériau d'acier comprend, en % en masse, C : 0,2 à 0,6 %, Si : 0,05 à 1,5 %, Mn : 0,2 à 2,5 %, P : 0,025 % ou moins, S : 0,003 à 0,05 %, Cr : 0,05 à 0,5 %, Al : 0,01 à 0,05 % et N : 0,003 à 0,025 %, le reste étant du Fe et des impuretés, et il est en outre caractérisé en ce qu'il comprend une couche composite d'une épaisseur inférieure ou égale à 3 µm formée sur la surface de l'acier et comprenant du fer, de l'azote et du carbone, et une couche durcie formée en dessous de la couche composite, l'épaisseur réelle de la couche durcie allant de 160 à 410 µm.
(JA) 部品の小型軽量化あるいは高い負荷容量の要求に応えることのできる、曲げ矯正性及び曲げ疲労特性に優れた窒化処理鋼部品であって、質量%で、C:0.2~0.6%、Si:0.05~1.5%、Mn:0.2~2.5%、P:0.025%以下、S:0.003~0.05%、Cr:0.05~0.5%、Al:0.01~0.05%、及びN:0.003~0.025%を含有し、残部がFe及び不純物である鋼材を素材とし、鋼表面に形成された、鉄、窒素及び炭素からなる厚さ3μm以下の化合物層と、化合物層の下に形成された硬化層とを有し、有効硬化層深さが160~410μmであることを特徴とする。
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