EP1052304A1 - Acier martensitique contenant du chrome résistant à la corrosion - Google Patents

Acier martensitique contenant du chrome résistant à la corrosion Download PDF

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Publication number
EP1052304A1
EP1052304A1 EP00890145A EP00890145A EP1052304A1 EP 1052304 A1 EP1052304 A1 EP 1052304A1 EP 00890145 A EP00890145 A EP 00890145A EP 00890145 A EP00890145 A EP 00890145A EP 1052304 A1 EP1052304 A1 EP 1052304A1
Authority
EP
European Patent Office
Prior art keywords
weight
leg
chromium steel
alloy
nitrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00890145A
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German (de)
English (en)
Other versions
EP1052304B1 (fr
Inventor
Dr. Gerhard Lichtenegger
Johann Sammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine Boehler Edelstahl GmbH
Original Assignee
Boehler Edelstahl GmbH and Co KG
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Publication of EP1052304A1 publication Critical patent/EP1052304A1/fr
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Publication of EP1052304B1 publication Critical patent/EP1052304B1/fr
Anticipated expiration legal-status Critical
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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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • 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
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr

Definitions

  • the invention relates to a corrosion-resistant chromium steel with 12 to 15 Wt% chromium.
  • the property profile of the Material essential, so that manufacturers increasingly Measure the demand for an improvement in the material properties in their Whole is made.
  • the hardness, the tempering behavior, the Temperature resistance, the corrosion resistance, the homogeneity of the Structures, the polishability and the like of known steels are said to be be increased or improved, so that a use of a new expensive alloy type can be omitted.
  • DE 39 01 470 C1 discloses a chromium steel containing 0.2 to molybdenum Add 0.7% by weight of nitrogen to make it corrosion resistant essential to increase. Alloys of this kind are corrosion-chemical improved, but may have lower hardness, poor polishability and have low structural homogeneity because in comparison with the Carbon content is given a high nitrogen concentration.
  • the invention now sets itself the task of an economical chrome steel to indicate the high hardness and temperature resistance with low Corrosion attack, a homogeneous microstructure and improved polishability owns.
  • a martensitic corrosion-resistant chromium steel contained in% by weight 0.2 up to 0.4 carbon 0.15 up to 0.5 silicon 0.15 up to 0.6 manganese 12.0 up to 15.0 chrome max 0.28 nickel 0.05 up to 0.19 nitrogen
  • Ratio carbon / nitrogen is above a value of 2.0, solved.
  • a morphologically favorable structure, in which the matrix hardness is one has high resistance, is due to the lack of strong nitride formers, such as was found, promoted, the elements titanium, aluminum, niobium and vanadium are unfavorably effective.
  • an aluminum content is below 0.17, at the most however, 0.19% by weight should be provided, in order not to tip the finely homogeneous Microstructure towards the formation of heterogeneous areas enable.
  • chrome steel can be achieved when the concentration of carbon is 0.25 to 0.30% by weight.
  • the material quality can be further increased according to the invention if the chromium steel has a maximum concentration of molybdenum plus (tungsten x 0.5) of at most 0.20 and / or the highest contents Titanium 0.01, preferably 0.006% by weight Aluminum 0.05, preferably 0.025% by weight Niobium 0.01 preferably 0.006% by weight be.
  • Tab. 1 lists tested materials with their chemical composition.
  • alloy C Si Mn Cr Mon Ni V W Ti Al Nb N 1 0.21 0.25 0.29 13.01 0.01 0.08 0.02 ⁇ 0.05 nb 0.02 nb 0.05 2nd 0.20 0.25 0.32 12.87 0.03 0.10 0.01 ⁇ 0.05 nb 0.02 nb 0.11 3rd 0.31 0.27 0.31 12.96 0.02 0.09 nb ⁇ 0.05 ⁇ 0.005 0.02 nb 0.12 4th 0.30 0.31 0.32 13.03 ⁇ 0.02 0.10 0.03 0.05 ⁇ 0.005 0.02 0.02 0.16 5 0.32 0.26 0.32 12.92 ⁇ 0.02 0.10 nb ⁇ 0.005 ⁇ 0.005 0.02 nb 0.21 6 0.40 0.44 0.30 12.97 ⁇ 0.02 0.08 nb nb nb nb 0.01 7 0.31 0.35 0.31 13.01 0.08 0.09 nb nb nb nb 0.01 7 0.31 0.35 0.31 13.01 0.08 0.09 nb n
  • alloy 1 corresponds to material number 1.2082
  • alloys 6 and 9 correspond to material number 1.2083
  • alloy 7 corresponds to Material number 1.4028
  • alloy 12 is the material number 1.2316.
  • Table 2 shows the results with regard to mechanical properties, corrosion resistance, polishability and dimensional stability in heat treatment for comparison, whereby a key figure was determined for the overall assessment of the material properties, which indicates the material quality can serve.
  • alloy Mechanical properties [%] Corrosion resistance [%] Polished tobacco [%] Dimension change rate [%] identification number comment 1 60 60 120 90 3.3 DIN 1.2082 2nd 70 70 110 100 3.5 Trial leg. 3rd 160 100 160 140 5.6 Trial leg. 4th - - - - - Trial leg. 5 80 120 120 100 4.2 Trial leg. 6 100 50 60 80 2.9 DIN 1.2083, 7 90 60 100 100 100 3.5 DIN 1.4028, 8th 95 70 100 100 3.7 Trial leg. 9 110 50 70 80 3.1 DIN 1.2083, 10th 120 70 80 90 3.6 Trial leg. 11 110 80 70 70 3.3 Trial leg. 12th 70 100 40 50 2.6 DIN 1.2316, 13 70 160 50 60 3.4 Trial leg.
  • the procedure for creating the key figures was as follows: The material that had the best overall material values (alloy 3) excluded. The highest of the remaining test alloys Property value of a species assessed at 100% and the other individual values of Materials in relation to this 100%. Then took place on this created basis also the determination of the percentage property values of the best or an alloy according to the invention 3. To represent the Material quality in its entirety characterizing one was carried out in each case Sum of the individual percentage values and a division of this sum 100.
  • Test alloy 4 yielded, obviously due to the high Nitrogen content, a porous or leaky block structure and must in the comparative considerations are left out.
  • Fig. 2 shows the dependence of hardness on the annealing time and conveys a very good long-term behavior of a leg according to the invention.
  • 3 at 550 ° C that is, one This material is particularly suitable for higher loads Working temperatures over long periods, as is the case with glass molds, for example given is. this favorable material property can be economically advantageous Reduction of the cycle side can be used, that is, with the same service life of the This tool is used at a higher temperature.
  • Fig. 3 the corrosion resistance of the leg is compared with standard alloys. 3 shown. Alloy 3 according to the invention achieves this Corrosion resistance of a 17% chromium steel (material number 1.2316).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Laminated Bodies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
EP00890145A 1999-05-10 2000-05-09 Acier martensitique contenant du chrome résistant à la corrosion Expired - Lifetime EP1052304B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT84399 1999-05-10
AT0084399A AT407647B (de) 1999-05-10 1999-05-10 Martensitischer korrosionsbeständiger chromstahl

Publications (2)

Publication Number Publication Date
EP1052304A1 true EP1052304A1 (fr) 2000-11-15
EP1052304B1 EP1052304B1 (fr) 2005-12-28

Family

ID=3501056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890145A Expired - Lifetime EP1052304B1 (fr) 1999-05-10 2000-05-09 Acier martensitique contenant du chrome résistant à la corrosion

Country Status (8)

Country Link
EP (1) EP1052304B1 (fr)
AT (2) AT407647B (fr)
DE (1) DE50011941D1 (fr)
DK (1) DK1052304T3 (fr)
ES (1) ES2254128T3 (fr)
HK (1) HK1034542A1 (fr)
PT (1) PT1052304E (fr)
SI (1) SI1052304T1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717332A1 (fr) * 2005-04-26 2006-11-02 BÖHLER Edelstahl GmbH Moule à matière plastique
WO2008033084A1 (fr) * 2006-09-13 2008-03-20 Uddeholm Tooling Aktiebolag Alliage d'acier, support ou élément de support pour un outil de moulage des matières plastiques, ébauche rendue tenace par trempage pour un support ou élément de support, procédé de fabrication d'un alliage d'acier
CN104651745A (zh) * 2013-11-21 2015-05-27 百乐特殊钢有限两合公司 由马氏体铬钢制造塑料模具的方法以及塑料模具
WO2015124169A1 (fr) 2014-02-18 2015-08-27 Schmiedewerke Gröditz Gmbh Acier au chrome pour pièces de machines fortement sollicitées à l'usure, en particulier pour matrices à pelleter
CN109207856A (zh) * 2018-10-17 2019-01-15 攀钢集团攀枝花钢铁研究院有限公司 含氮塑料模具扁钢及其生产方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07278758A (ja) * 1994-04-13 1995-10-24 Nippon Steel Corp エンジンガスケット用ステンレス鋼とその製造方法
JPH0860238A (ja) * 1994-08-23 1996-03-05 Nippon Steel Corp 熱間加工性および耐硫化物応力割れ性に優れたマルテンサイト系ステンレス鋼の製造法
JPH08260037A (ja) * 1995-03-23 1996-10-08 Nippon Steel Corp 耐硫化物応力割れ性、靭性および熱間加工性に優れたマルテンサイト系ステンレス鋼の製造法
JPH11106869A (ja) * 1997-09-30 1999-04-20 Sanyo Special Steel Co Ltd 高強度かつ耐食性の優れたマルテンサイト系ステンレス鋼
EP0994199A1 (fr) * 1998-10-05 2000-04-19 Sumitomo Metal Industries, Ltd. Acier inoxydable pour un joint et méthode pour sa fabrication

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56151149A (en) * 1980-04-23 1981-11-24 Kubota Ltd Assembling type roll for continuous casting of slab
AT377785B (de) * 1983-06-28 1985-04-25 Ver Edelstahlwerke Ag Chromhaeltige legierung
KR910003538B1 (ko) * 1986-03-04 1991-06-04 가와사끼 세이데쓰 가부시끼가이샤 내산화성, 가공성 및 내식성이 우수한 마르텐사이트계 스테인레스강 및 그 제조방법
JPH04325658A (ja) * 1991-04-24 1992-11-16 Daido Steel Co Ltd 耐熱鋳鋼
US5458703A (en) * 1991-06-22 1995-10-17 Nippon Koshuha Steel Co., Ltd. Tool steel production method
DE4133480A1 (de) * 1991-10-09 1993-04-15 Boehler Ag Nichtrostender chromlegierter stahl fuer kunststofformen
AT405193B (de) * 1995-01-16 1999-06-25 Boehler Edelstahl Verwendung einer chromhältigen, martensitischen eisenbasislegierung für kunststofformen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07278758A (ja) * 1994-04-13 1995-10-24 Nippon Steel Corp エンジンガスケット用ステンレス鋼とその製造方法
JPH0860238A (ja) * 1994-08-23 1996-03-05 Nippon Steel Corp 熱間加工性および耐硫化物応力割れ性に優れたマルテンサイト系ステンレス鋼の製造法
JPH08260037A (ja) * 1995-03-23 1996-10-08 Nippon Steel Corp 耐硫化物応力割れ性、靭性および熱間加工性に優れたマルテンサイト系ステンレス鋼の製造法
JPH11106869A (ja) * 1997-09-30 1999-04-20 Sanyo Special Steel Co Ltd 高強度かつ耐食性の優れたマルテンサイト系ステンレス鋼
EP0994199A1 (fr) * 1998-10-05 2000-04-19 Sumitomo Metal Industries, Ltd. Acier inoxydable pour un joint et méthode pour sa fabrication

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717332A1 (fr) * 2005-04-26 2006-11-02 BÖHLER Edelstahl GmbH Moule à matière plastique
WO2008033084A1 (fr) * 2006-09-13 2008-03-20 Uddeholm Tooling Aktiebolag Alliage d'acier, support ou élément de support pour un outil de moulage des matières plastiques, ébauche rendue tenace par trempage pour un support ou élément de support, procédé de fabrication d'un alliage d'acier
CN104651745A (zh) * 2013-11-21 2015-05-27 百乐特殊钢有限两合公司 由马氏体铬钢制造塑料模具的方法以及塑料模具
EP2875926A1 (fr) 2013-11-21 2015-05-27 Böhler Edelstahl GmbH & Co KG Procédé de fabrication de moules en plastique à partir d'acier chromé martensitique et moule de plastique
WO2015124169A1 (fr) 2014-02-18 2015-08-27 Schmiedewerke Gröditz Gmbh Acier au chrome pour pièces de machines fortement sollicitées à l'usure, en particulier pour matrices à pelleter
CN109207856A (zh) * 2018-10-17 2019-01-15 攀钢集团攀枝花钢铁研究院有限公司 含氮塑料模具扁钢及其生产方法
CN109207856B (zh) * 2018-10-17 2020-04-14 攀钢集团攀枝花钢铁研究院有限公司 含氮塑料模具扁钢及其生产方法

Also Published As

Publication number Publication date
DK1052304T3 (da) 2006-05-15
ATE314501T1 (de) 2006-01-15
AT407647B (de) 2001-05-25
ATA84399A (de) 2000-09-15
DE50011941D1 (de) 2006-02-02
EP1052304B1 (fr) 2005-12-28
SI1052304T1 (sl) 2006-04-30
PT1052304E (pt) 2006-05-31
ES2254128T3 (es) 2006-06-16
HK1034542A1 (en) 2001-10-26

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