WO2002040722A1 - Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid - Google Patents
Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid Download PDFInfo
- Publication number
- WO2002040722A1 WO2002040722A1 PCT/FR2001/003595 FR0103595W WO0240722A1 WO 2002040722 A1 WO2002040722 A1 WO 2002040722A1 FR 0103595 W FR0103595 W FR 0103595W WO 0240722 A1 WO0240722 A1 WO 0240722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- strip
- heat treatment
- steel
- hardening
- maraging steel
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910001240 Maraging steel Inorganic materials 0.000 title claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000001953 recrystallisation Methods 0.000 claims abstract description 7
- 238000005482 strain hardening Methods 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 238000005121 nitriding Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 238000005097 cold rolling Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 29
- 229910052750 molybdenum Inorganic materials 0.000 description 13
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 12
- 239000011733 molybdenum Substances 0.000 description 12
- 239000010936 titanium Substances 0.000 description 10
- 229910017052 cobalt Inorganic materials 0.000 description 7
- 239000010941 cobalt Substances 0.000 description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000010313 vacuum arc remelting Methods 0.000 description 1
Classifications
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C21D6/02—Hardening by precipitation
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C21D2201/00—Treatment for obtaining particular effects
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
Definitions
- the present invention relates to a maraging steel particularly suitable for the manufacture of parts requiring very good resistance to fatigue.
- Many parts are made from maraging steel strips containing, in% by weight, about 18% of nickel, 9% of cobalt, 5% of molybdenum, 0.5% of titanium and 0.1% of aluminum, treated to have an elastic limit greater than 1800 MPa. These strips are obtained by hot rolling and cold rolling. The strips or the pieces cut from the strips are then hardened by a heat treatment to harden around 500 ° C.
- the parts are optionally nitrided on the surface to improve their resistance to fatigue. However, the fatigue strength of these parts is insufficient.
- maraging steels having different chemical compositions and mechanical characteristics, such as maraging steels containing 18% of nickel, 12% of cobalt, 4% of molybdenum, 1.6% titanium and 0.2% aluminum, or maraging steels containing 18% nickel, 3% molybdenum, 1.4% titanium and 0.1% aluminum, or maraging steels containing 13% chromium, 8% nickel, 2% molybdenum and 1% aluminum.
- maraging steels having different chemical compositions and mechanical characteristics, such as maraging steels containing 18% of nickel, 12% of cobalt, 4% of molybdenum, 1.6% titanium and 0.2% aluminum, or maraging steels containing 18% nickel, 3% molybdenum, 1.4% titanium and 0.1% aluminum, or maraging steels containing 13% chromium, 8% nickel, 2% molybdenum and 1% aluminum.
- the object of the present invention is to remedy this drawback and to propose a band or a piece of maraging steel having improved resistance to fatigue.
- the subject of the invention is a method for manufacturing a strip or a part cut from a cold rolled maraging steel strip. According to this method, before carrying out the hardening heat treatment, the strip or the part is subjected to cold plastic deformation with a rate of work hardening greater than 30% and the strip or the part is subjected to annealing. recrystallization so as to obtain a fine grain of ASTM index greater than 8.
- the chemical composition of the steel comprises, by weight:
- the strip or the part is subjected to cold rolling with a reduction rate of between 1% and 10%.
- the maraging steel is remelted under vacuum by the VAR process or remelted a first time under vacuum by the VAR process or under electroconductive slag by the process ESR and remelted a second time under vacuum by the VAR process.
- the invention also relates to a strip or part, of thickness less than 1 mm, made of maraging steel having a fine grain of ASTM index greater than 8 and a yield strength after hardening greater than 1850 MPa.
- the strip or the part thus obtained can be used for the manufacture of parts such as belts. These parts are hardened by a hardening treatment between 450 and 550 ° C for 1 to 10 hours which can be followed by nitriding on the surface.
- a cold rolled strip of maraging steel is produced by targeting a carbon of less than 0.005% and then by deoxidizing with aluminum.
- the steel thus produced is cast in the form of reflow electrodes.
- These electrodes are either remelted under vacuum (VAR process, “Vacuum Arc Remelting” known in itself) to form ingots or slabs, or remelted a first time under vacuum (VAR) or under electroconductive slag (ESR process, “Electro Slag Remelting ", known in itself) to form second electrodes which are themselves remelted under vacuum (VAR) to form ingots or slabs.
- VAR process remelted under vacuum
- ESR process electroconductive slag Remelting
- the ingots or slabs are then hot rolled after reheating to around 1200 ° C, and for example between 1150 ° C and 1250 ° C to obtain hot rolled strips a few millimeters thick, and for example about 4 , 5 mm thick.
- the hot-rolled strips are pickled and then cold-rolled with one or more recrystallization anneals to obtain cold-rolled strips of thickness less than 1 mm, for example 0.4 mm or 0.2 mm thick .
- the last intermediate recrystallization annealing treatment is carried out at a thickness such that the cold-rolled strip has a work hardening rate greater than 30% and better still greater than 40%.
- the strip thus hardened is annealed, for example in a passage oven, to obtain a fine grain of ASTM index greater than 8 (corresponding to an average grain diameter less than 20 microns), and better still greater than 10 (corresponding to a diameter grain size less than 10 microns); the grain size being determined according to ASTM E112.
- the annealing treatment intended to obtain a fine grain is carried out under a protective atmosphere by suitably adjusting the temperature and duration parameters. These parameters depend on the particular conditions for carrying out the heat treatment and those skilled in the art know how to determine these parameters in each particular case.
- the duration that is to say the residence time of any point of the strip in the oven
- the setpoint temperature oven is between 900 ° C and 1100 ° C
- the atmosphere of the oven can be argon with a dew temperature preferably below -50 ° C.
- the strip In order to improve the flatness of the strip and, if necessary, to perfect the martensitic transformation, the strip can, moreover, be subjected to a light cold rolling with a reduction rate of between 1% and 10%, which leads to a work hardening rate of the same value.
- the hardening treatment can also be carried out in a passage oven at a temperature between 600 ° C and 700 ° C for a time between 30 seconds and 3 minutes.
- the part can be hardened on the surface by a nitriding treatment carried out by keeping it for a few hours at around 500 ° C. in a reactive gas mixture rich in nitrogen.
- blanks of parts can be cut from cold-rolled strips of thickness greater than the final thickness desired for the parts. These blanks are shaped, possibly welded, then cold-rolled to the final thickness so as to have a work hardening rate greater than 30% or better still greater than 40%.
- the parts are then annealed under the same conditions as what has just been described, so as to obtain a fine grain of ASTM index greater than 8, or better still greater than 10, then subjected to a hardening treatment as indicated above. above.
- the yield strength obtained is high and the resistance to fatigue is excellent.
- Parts can also be produced by cutting, for example by chemical cutting, from hardened strips. The entire process, including the hardening heat treatment, is then applied to the strip.
- These parts are, for example, integrated circuit support grids.
- the maraging steel which it is preferable to use to obtain very good fatigue properties and an elastic limit greater than 1850 MPa, contains mainly, in% by weight:
- the nickel and molybdenum contents must be such that 20% ⁇ Ni + Mo ⁇ 27%, and preferably such that 22% ⁇ Ni + Mo ⁇ 25%.
- the cobalt and molybdenum contents In order to obtain an elastic limit, after thermal hardening treatment, greater than 1850 MPa, the cobalt and molybdenum contents must be such that Co x Mo> 50, and preferably such that Co x Mo> 70. Indeed , the higher this product, the higher the elastic limit. However, in order to obtain sufficient ductility, the cobalt and molybdenum contents must be such that Co x Mo ⁇ 200, and preferably such that Co x Mo ⁇ 120. These values correspond respectively to elastic limits less than around 3000 MPa and 2500 MPa. Molybdenum has a favorable effect on hardening by surface nitriding. To obtain good curing, the molybdenum content should preferably be greater than 4%, and better still greater than 6%. However, it is preferable for it to remain below 8% to limit the problems of segregation and to facilitate the hot transformation operations as well as to improve the ductility of the final product. Two preferred ranges of molybdenum contents can
- the following preferential composition domains can be defined for the main elements: 1) in order to obtain a yield strength greater than 1850 MPa and an average suitability for hardening by nitriding:
- the minimum content can be 0% or traces.
- the nitrogen and titanium contents must be such that: Ti x N ⁇ 2 x 10 "4 , or better, ⁇ 1 x 10 " 4 .
- maraging steel strips of composition have been produced:
- a first strip A given by way of example, was annealed in a hydrogen oven at 1020 ° C for 1 minute to obtain a fine grain of ASTM 11 index and then hardened by maintaining at 490 ° C for 3 hours.
- a second strip B given for comparison, was annealed in a passage oven at 1150 ° C for 1 minute to obtain a coarse grain of index ASTM 7 and then hardened by maintaining at 490 ° C for 3 hours. Comparative fatigue resistance tests were carried out with bands A and B by wavy traction, at 25 hertz, with a maximum stress of 750 MPa and a minimum stress of 75 MPa.
- the fatigue limit was greater than 8 ⁇ 10 8 cycles, while for band B, the fatigue limit was equal to 5 ⁇ 10 8 cycles.
- a strip of maraging steel was also produced containing 18% nickel, 9% cobalt, 5% molybdenum, 0.5% titanium and 0.1% aluminum. This strip was manufactured by the method according to the invention, the grain had an ASTM index of 10 and the elastic limit was 1910 MPa. The fatigue limit measured under the same test conditions as in the previous case was 2 x 10 8 cycles.
- These bands can advantageously be used to manufacture belts or any other product, such as grids supporting integrated circuits.
- transmission belts for internal combustion engines are made up of jumpers held by rings made up of narrow bands according to the invention and the two ends of which are welded. These belts have a lifespan more than ten times longer than the lifespan of identical belts but manufactured with strips of maraging steel in accordance with the prior art.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Articles (AREA)
- Soft Magnetic Materials (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002218382A AU2002218382A1 (en) | 2000-11-17 | 2001-11-16 | Method for making a strip or a workpiece cut out from a cold rolled maraging steel strip |
EP01996631A EP1339880B1 (fr) | 2000-11-17 | 2001-11-16 | Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid |
KR1020037006549A KR100884639B1 (ko) | 2000-11-17 | 2001-11-16 | 냉간압연된 마레이징 강 띠강판에서 절삭된 띠강판 또는 부품을 제조하는 방법 |
DE60129350T DE60129350T2 (de) | 2000-11-17 | 2001-11-16 | Verfahren zur herstellung eines bands oder eines aus einem kaltgewalzten band aus martensitaushärtendem stahl ausgeschnittenen werkstücks |
DK01996631T DK1339880T3 (da) | 2000-11-17 | 2001-11-16 | Fremgangsmåde til fremstilling af et bånd eller et emne udskåret i et bånd af koldvalset martensithærdende stål |
JP2002543031A JP4278378B2 (ja) | 2000-11-17 | 2001-11-16 | 冷間圧延されたマルエージング鋼の帯鋼または帯状に切断される鋼片を製造するための方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0014807A FR2816959B1 (fr) | 2000-11-17 | 2000-11-17 | Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid |
FR00/14807 | 2000-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002040722A1 true WO2002040722A1 (fr) | 2002-05-23 |
Family
ID=8856554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/003595 WO2002040722A1 (fr) | 2000-11-17 | 2001-11-16 | Procede pour fabriquer une bande ou une piece decoupee dans une bande en acier maraging laminee a froid |
Country Status (16)
Country | Link |
---|---|
US (1) | US6663730B2 (fr) |
EP (1) | EP1339880B1 (fr) |
JP (2) | JP4278378B2 (fr) |
KR (2) | KR100884639B1 (fr) |
CN (1) | CN1298869C (fr) |
AR (1) | AR034276A1 (fr) |
AT (1) | ATE366826T1 (fr) |
AU (1) | AU2002218382A1 (fr) |
CY (1) | CY1106925T1 (fr) |
DE (1) | DE60129350T2 (fr) |
DK (1) | DK1339880T3 (fr) |
ES (1) | ES2287187T3 (fr) |
FR (1) | FR2816959B1 (fr) |
PT (1) | PT1339880E (fr) |
TW (1) | TW539746B (fr) |
WO (1) | WO2002040722A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1422301A1 (fr) * | 2002-11-19 | 2004-05-26 | Hitachi Metals, Ltd. | Acier maraging et son procédé d'élaboration |
WO2016170397A1 (fr) * | 2015-04-23 | 2016-10-27 | Aperam | Acier, produit réalisé en cet acier, et son procédé de fabrication |
US10731231B2 (en) | 2015-10-15 | 2020-08-04 | Aperam | Steel, product created from said steel, and manufacturing method thereof |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2406891B (en) * | 2003-10-07 | 2006-09-27 | Renold Plc | A transmission chain |
CN101688271B (zh) * | 2007-07-11 | 2013-03-27 | 日立金属株式会社 | 马氏体时效钢和金属带用马氏体时效钢 |
US8747574B2 (en) | 2009-03-26 | 2014-06-10 | Hitachi Metals, Ltd. | Maraging steel strip |
EP3004408B1 (fr) | 2013-06-07 | 2017-08-09 | VDM Metals International GmbH | Procédé de production d'une feuille de métal |
JP6388926B2 (ja) * | 2013-06-07 | 2018-09-12 | ファオデーエム メタルズ ゲゼルシャフト ミット ベシュレンクテル ハフツングVDM Metals GmbH | 金属箔の製造方法 |
CN104197105A (zh) * | 2014-08-28 | 2014-12-10 | 安徽中臣机电装备科技有限公司 | 一种不锈钢钢管 |
NL1041468B1 (en) * | 2015-09-08 | 2017-03-22 | Bosch Gmbh Robert | Metal ring component of a drive belt for a continuously variable transmisson. |
CN107419196B (zh) * | 2017-09-18 | 2019-12-20 | 东北大学 | 屈强比可控的超低碳易焊接中锰汽车用钢及其制备方法 |
JP2019189927A (ja) * | 2018-04-27 | 2019-10-31 | トヨタ自動車株式会社 | 無端金属リング、及びその製造方法 |
RU2686706C1 (ru) * | 2018-06-01 | 2019-04-30 | Общество с ограниченной отвественностью "Лаборатория специальной металлургии" (ООО "Ласмет") | Мартенситностареющая высокопрочная сталь 01Н18К9М5Т |
CN113774289A (zh) * | 2021-08-25 | 2021-12-10 | 哈尔滨工程大学 | 一种2700MPa级高塑韧性高耐蚀马氏体时效不锈钢及其制备方法 |
CN115786813B (zh) * | 2022-11-09 | 2024-06-11 | 成都先进金属材料产业技术研究院股份有限公司 | 一种马氏体时效钢板材及其制备方法 |
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GB936557A (en) * | 1961-01-03 | 1963-09-11 | Mond Nickel Co Ltd | Alloy steel |
JPH01142021A (ja) * | 1987-11-27 | 1989-06-02 | Sumitomo Metal Ind Ltd | 継目無金属ベルトの製造方法 |
JPH01142052A (ja) * | 1987-11-27 | 1989-06-02 | Sumitomo Metal Ind Ltd | 継目無金属ベルト及びその製造方法 |
JPH01162726A (ja) * | 1987-12-18 | 1989-06-27 | Kobe Steel Ltd | 18%Niマルエージング鋼の冷間圧延薄鋼板の製造方法 |
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- 2001-11-16 PT PT01996631T patent/PT1339880E/pt unknown
- 2001-11-16 AR ARP010105379A patent/AR034276A1/es unknown
- 2001-11-16 EP EP01996631A patent/EP1339880B1/fr not_active Expired - Lifetime
- 2001-11-16 AT AT01996631T patent/ATE366826T1/de active
- 2001-11-16 KR KR1020037006549A patent/KR100884639B1/ko active IP Right Grant
- 2001-11-16 ES ES01996631T patent/ES2287187T3/es not_active Expired - Lifetime
- 2001-11-16 CN CNB018188265A patent/CN1298869C/zh not_active Expired - Lifetime
- 2001-11-16 DE DE60129350T patent/DE60129350T2/de not_active Expired - Lifetime
- 2001-11-16 AU AU2002218382A patent/AU2002218382A1/en not_active Abandoned
- 2001-11-16 JP JP2002543031A patent/JP4278378B2/ja not_active Expired - Lifetime
- 2001-11-16 DK DK01996631T patent/DK1339880T3/da active
- 2001-11-16 WO PCT/FR2001/003595 patent/WO2002040722A1/fr active IP Right Grant
- 2001-11-16 KR KR1020087009332A patent/KR20080048544A/ko not_active Application Discontinuation
- 2001-11-16 TW TW090128454A patent/TW539746B/zh active
- 2001-11-19 US US09/988,134 patent/US6663730B2/en not_active Expired - Lifetime
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1422301A1 (fr) * | 2002-11-19 | 2004-05-26 | Hitachi Metals, Ltd. | Acier maraging et son procédé d'élaboration |
EP1826282A1 (fr) | 2002-11-19 | 2007-08-29 | Hitachi Metals, Ltd. | Procédé de production d'acier maraging |
US7445678B2 (en) | 2002-11-19 | 2008-11-04 | Hitachi Metals, Ltd. | Maraging steel and method of producing the same |
WO2016170397A1 (fr) * | 2015-04-23 | 2016-10-27 | Aperam | Acier, produit réalisé en cet acier, et son procédé de fabrication |
WO2016170519A1 (fr) * | 2015-04-23 | 2016-10-27 | Aperam | Acier, produit réalisé en cet acier, et son procédé de fabrication |
US11186886B2 (en) | 2015-04-23 | 2021-11-30 | Aperam | Steel, product made of said steel, and manufacturing method thereof |
US10731231B2 (en) | 2015-10-15 | 2020-08-04 | Aperam | Steel, product created from said steel, and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
US6663730B2 (en) | 2003-12-16 |
FR2816959B1 (fr) | 2003-08-01 |
JP2008274436A (ja) | 2008-11-13 |
ATE366826T1 (de) | 2007-08-15 |
DK1339880T3 (da) | 2007-09-10 |
EP1339880B1 (fr) | 2007-07-11 |
JP4965502B2 (ja) | 2012-07-04 |
DE60129350D1 (de) | 2007-08-23 |
CN1630732A (zh) | 2005-06-22 |
EP1339880A1 (fr) | 2003-09-03 |
KR100884639B1 (ko) | 2009-02-23 |
KR20030055303A (ko) | 2003-07-02 |
TW539746B (en) | 2003-07-01 |
DE60129350T2 (de) | 2008-03-13 |
KR20080048544A (ko) | 2008-06-02 |
JP2004514056A (ja) | 2004-05-13 |
FR2816959A1 (fr) | 2002-05-24 |
ES2287187T3 (es) | 2007-12-16 |
AU2002218382A1 (en) | 2002-05-27 |
CY1106925T1 (el) | 2012-09-26 |
AR034276A1 (es) | 2004-02-18 |
CN1298869C (zh) | 2007-02-07 |
JP4278378B2 (ja) | 2009-06-10 |
PT1339880E (pt) | 2007-08-13 |
US20020059967A1 (en) | 2002-05-23 |
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