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1. WO2020108123 - HIGH-NITROGEN AND HIGH-CHROMIUM PLASTIC DIE STEEL, AND SMELTING METHOD AND THERMAL PROCESSING METHOD THEREFOR

Publication Number WO/2020/108123
Publication Date 04.06.2020
International Application No. PCT/CN2019/110868
International Filing Date 12.10.2019
IPC
C22C 38/02 2006.01
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 38/44 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
44with molybdenum or tungsten
C21D 1/20 2006.01
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
18Hardening; Quenching with or without subsequent tempering
19by interrupted quenching
20Isothermal quenching, e.g. bainitic hardening
C22C 33/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
04by melting
C21D 6/00 2006.01
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
6Heat treatment of ferrous alloys
C21D 1/32 2006.01
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
26Methods of annealing
32Soft annealing, e.g. spheroidising
CPC
C21D 1/20
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
18Hardening
19by interrupted quenching
20Isothermal quenching, e.g. bainitic hardening
C21D 1/32
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
26Methods of annealing
32Soft annealing, e.g. spheroidising
C21D 6/004
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 BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
6Heat treatment of ferrous alloys
004containing Cr and Ni
C21D 6/005
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
6Heat treatment of ferrous alloys
005containing Mn
C21D 6/008
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
6Heat treatment of ferrous alloys
008containing Si
C22C 33/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
04by melting
Applicants
  • 攀钢集团攀枝花钢铁研究院有限公司 PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD. [CN]/[CN]
Inventors
  • 肖强 XIAO, Qiang
  • 李俊洪 LI, Junhong
  • 罗许 LUO, Xu
  • 刘序江 LIU, Xujiang
Agents
  • 成都虹桥专利事务所(普通合伙) CHENGDU HONGQIAO PATENT LAW OFFICE
Priority Data
201811433208.728.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) HIGH-NITROGEN AND HIGH-CHROMIUM PLASTIC DIE STEEL, AND SMELTING METHOD AND THERMAL PROCESSING METHOD THEREFOR
(FR) ACIER À MATRICE PLASTIQUE À TENEUR EN AZOTE ÉLEVÉE ET À TENEUR EN CHROME ÉLEVÉE, ET PROCÉDÉ DE FUSION ET PROCÉDÉ DE TRAITEMENT THERMIQUE POUR CELUI-CI
(ZH) 高氮高铬塑料模具钢及其冶炼和热处理方法
Abstract
(EN)
High-nitrogen and high-chromium plastic die steel, and a smelting method and a thermal processing method therefor. The high-nitrogen and high-chromium plastic die steel comprises the chemical components in percentage by weight: 0.25-0.35% of C, 0.45-0.8% of Si, 0.4-0.7% of Mn, 16.5-17.5% of Cr, 0.1-0.3% of Ni, 0.1-0.5% of Mo, 0.06-0.10% of N, and the balance being Fe and inevitable impurity elements. The thermal processing comprises spheroidizing annealing and isothermal quenching-tempering. The plastic die steel has good corrosion resistance.
(FR)
L'invention concerne un acier à matrice plastique à teneur en azote élevée et à teneur en chrome élevée, et un procédé de fusion et un procédé de traitement thermique pour celui-ci. L'acier à matrice plastique à teneur en azote élevée et à teneur en chrome élevée comprend les composants chimiques, en pourcentage en poids : de 0,25 à 0,35% de C, de 0,45 à 0,8% de Si, de 0,4 à 0,7% de Mn, de 16,5 à 17,5% de Cr, 0,1 à 0,3 % de Ni, de 0,1 à 0,5% de Mo, de 0,06 à 0,10% de N, le reste étant du Fe et des éléments d'impuretés inévitables. Le traitement thermique comprend un recuit de sphéroïdisation et un revenu-trempe isotherme. L'acier à matrice plastique a une bonne résistance à la corrosion.
(ZH)
一种高氮高铬塑料模具钢及其冶炼和热处理方法,按重量百分比计,其化学成分为:C 0.25~0.35%、Si 0.45~0.8%、Mn 0.4~0.7%、Cr 16.5~17.5%、Ni 0.1~0.3%、Mo 0.1~0.5%、N 0.06~0.10%,其余为Fe及不可避免的杂质元素;热处理采用了球化退火和等温淬火-回火;该塑料模具钢具有良好的耐蚀性能。
Also published as
Latest bibliographic data on file with the International Bureau