CN109266970B - 高氮高铬塑料模具钢及其冶炼和热处理方法 - Google Patents
高氮高铬塑料模具钢及其冶炼和热处理方法 Download PDFInfo
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- CN109266970B CN109266970B CN201811433208.7A CN201811433208A CN109266970B CN 109266970 B CN109266970 B CN 109266970B CN 201811433208 A CN201811433208 A CN 201811433208A CN 109266970 B CN109266970 B CN 109266970B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 114
- 239000010959 steel Substances 0.000 title claims abstract description 114
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 74
- 229920003023 plastic Polymers 0.000 title claims abstract description 59
- 239000004033 plastic Substances 0.000 title claims abstract description 59
- 239000011651 chromium Substances 0.000 title claims abstract description 57
- 238000010438 heat treatment Methods 0.000 title claims abstract description 55
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003723 Smelting Methods 0.000 title claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 36
- 150000003839 salts Chemical class 0.000 claims description 23
- 238000007664 blowing Methods 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 238000005496 tempering Methods 0.000 claims description 20
- 238000000137 annealing Methods 0.000 claims description 15
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 239000007769 metal material Substances 0.000 abstract description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 6
- 235000011941 Tilia x europaea Nutrition 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 6
- 239000004571 lime Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000009749 continuous casting Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001214 P-type tool steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Images
Classifications
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- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- 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
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/607—Molten salts
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
Abstract
Description
C | Si | Mn | Cr | Ni | Mo | N | Al | P | S | O | H |
0.33 | 0.6 | 0.65 | 17.2 | 0.25 | 0.2 | 0.09 | 0.02 | 0.021 | 0.004 | 0.0028 | 0.0002 |
C | Si | Mn | Cr | Ni | Mo | N | Al | P | S | O | H |
0.31 | 0.45 | 0.62 | 16.9 | 0.22 | 0.24 | 0.08 | 0.02 | 0.022 | 0.004 | 0.0029 | 0.0002 |
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201811433208.7A CN109266970B (zh) | 2018-11-28 | 2018-11-28 | 高氮高铬塑料模具钢及其冶炼和热处理方法 |
EP19889385.1A EP3889285B1 (en) | 2018-11-28 | 2019-10-12 | Smelting method of high-nitrogen and high- chromium plastic mold steel and and heat treatment thereof |
PCT/CN2019/110868 WO2020108123A1 (zh) | 2018-11-28 | 2019-10-12 | 高氮高铬塑料模具钢及其冶炼和热处理方法 |
KR1020217014235A KR102597090B1 (ko) | 2018-11-28 | 2019-10-12 | 고질소 고크롬 플라스틱 금형강의 열처리 방법 |
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CN201811433208.7A CN109266970B (zh) | 2018-11-28 | 2018-11-28 | 高氮高铬塑料模具钢及其冶炼和热处理方法 |
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CN109266970A CN109266970A (zh) | 2019-01-25 |
CN109266970B true CN109266970B (zh) | 2020-11-10 |
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EP (1) | EP3889285B1 (zh) |
KR (1) | KR102597090B1 (zh) |
CN (1) | CN109266970B (zh) |
WO (1) | WO2020108123A1 (zh) |
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CN108707730B (zh) * | 2018-06-13 | 2020-01-14 | 东南大学 | 一种工模具钢高效连续退火方法 |
CN109266970B (zh) * | 2018-11-28 | 2020-11-10 | 攀钢集团攀枝花钢铁研究院有限公司 | 高氮高铬塑料模具钢及其冶炼和热处理方法 |
CN110423859A (zh) * | 2019-08-21 | 2019-11-08 | 河南中原特钢装备制造有限公司 | 一种马氏体不锈钢主轴的低磷冶炼工艺 |
CN110408848B (zh) * | 2019-09-10 | 2021-11-16 | 成都先进金属材料产业技术研究院股份有限公司 | 耐蚀模具用扁钢锭及其工艺方法 |
CN111809115B (zh) * | 2020-07-07 | 2021-09-14 | 鞍钢股份有限公司 | 耐冲击腐蚀磨损性能优异的特厚塑料模具钢及其制备方法 |
CN114717392B (zh) * | 2022-03-22 | 2023-10-10 | 江苏大学 | 一种Dievar钢及其热处理方法 |
CN115181901B (zh) * | 2022-04-07 | 2023-09-26 | 燕山大学 | 一种高强韧硬低温贝氏体热作模具钢及其制备方法 |
CN116904865B (zh) * | 2023-09-14 | 2023-12-01 | 成都先进金属材料产业技术研究院股份有限公司 | 一种大规格3Cr17塑料模具钢及其生产方法 |
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CN1039036C (zh) * | 1993-12-28 | 1998-07-08 | 新日本制铁株式会社 | 耐热影响区软化性能优良的马氏体耐热钢及其制造方法 |
JP3965779B2 (ja) * | 1998-05-22 | 2007-08-29 | 大同特殊鋼株式会社 | プラスチック成形金型用鋼 |
CN101967608A (zh) * | 2010-11-12 | 2011-02-09 | 上海大学 | 一种含氮耐蚀塑料模具钢及其制备工艺 |
CN104878298B (zh) * | 2015-05-15 | 2017-05-03 | 安泰科技股份有限公司 | 粉末冶金耐磨损耐腐蚀合金 |
JP2017150045A (ja) * | 2016-02-26 | 2017-08-31 | 山陽特殊製鋼株式会社 | マルテンサイト系ステンレス鋼 |
CN106636895A (zh) * | 2016-11-30 | 2017-05-10 | 重庆材料研究院有限公司 | 特种轴承钢及其制造方法 |
CN108220766B (zh) * | 2016-12-13 | 2020-05-29 | 鞍钢股份有限公司 | 一种Cr-V系热作模具钢及其制备方法 |
CN108315656B (zh) * | 2017-01-16 | 2020-08-25 | 宝山钢铁股份有限公司 | 一种免热处理的8.8级紧固件用冷镦钢及其制造方法 |
CN106917045B (zh) * | 2017-03-07 | 2019-03-05 | 广西大学行健文理学院 | 铸造冷镦模具的制造方法 |
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CN107747066B (zh) * | 2017-11-13 | 2019-12-27 | 吉林大学 | 一种内生纳米TiC陶瓷颗粒原位增强铸造高铬热作模具钢及其制备方法 |
CN108893682B (zh) * | 2018-08-01 | 2020-10-09 | 攀钢集团攀枝花钢铁研究院有限公司 | 模具钢钢坯及其制备方法 |
CN109266970B (zh) * | 2018-11-28 | 2020-11-10 | 攀钢集团攀枝花钢铁研究院有限公司 | 高氮高铬塑料模具钢及其冶炼和热处理方法 |
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2018
- 2018-11-28 CN CN201811433208.7A patent/CN109266970B/zh active Active
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2019
- 2019-10-12 KR KR1020217014235A patent/KR102597090B1/ko active IP Right Grant
- 2019-10-12 EP EP19889385.1A patent/EP3889285B1/en active Active
- 2019-10-12 WO PCT/CN2019/110868 patent/WO2020108123A1/zh unknown
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Publication number | Publication date |
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CN109266970A (zh) | 2019-01-25 |
KR20210091156A (ko) | 2021-07-21 |
EP3889285A1 (en) | 2021-10-06 |
EP3889285B1 (en) | 2024-02-21 |
EP3889285A4 (en) | 2022-07-06 |
WO2020108123A1 (zh) | 2020-06-04 |
KR102597090B1 (ko) | 2023-11-01 |
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