EP1274872B1 - Verfahren zur herstellung eines stickstofflegierten, sprühkompaktierten stahls, verfahren zu seiner herstellung - Google Patents

Verfahren zur herstellung eines stickstofflegierten, sprühkompaktierten stahls, verfahren zu seiner herstellung Download PDF

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Publication number
EP1274872B1
EP1274872B1 EP01933846A EP01933846A EP1274872B1 EP 1274872 B1 EP1274872 B1 EP 1274872B1 EP 01933846 A EP01933846 A EP 01933846A EP 01933846 A EP01933846 A EP 01933846A EP 1274872 B1 EP1274872 B1 EP 1274872B1
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EP
European Patent Office
Prior art keywords
mass
steel
content
nitrogen
accordance
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.)
Expired - Lifetime
Application number
EP01933846A
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German (de)
English (en)
French (fr)
Other versions
EP1274872A1 (de
Inventor
Claudia Ernst
Volker SCHÜLER
Bernd Gehricke
Ingolf Schruff
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.)
Edelstahl Witten-Krefeld GmbH
Original Assignee
Edelstahl Witten-Krefeld GmbH
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Filing date
Publication date
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Application filed by Edelstahl Witten-Krefeld GmbH filed Critical Edelstahl Witten-Krefeld GmbH
Priority to SI200130261T priority Critical patent/SI1274872T1/xx
Publication of EP1274872A1 publication Critical patent/EP1274872A1/de
Application granted granted Critical
Publication of EP1274872B1 publication Critical patent/EP1274872B1/de
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Classifications

    • 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
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/003—Moulding by spraying metal on a surface
    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1042—Alloys containing non-metals starting from a melt by atomising
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C23—COATING 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
    • C23C—COATING 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • Such steels are for example in the steel-iron list among the Material numbers 1.2080 (X210Cr12), 1.2201 (X165CrV12), 1.2376 (X96CrMoV12), 1.2378 (X220CrVMo12-2), 1.2379 (X155CrVMo12-1), 1.2380 (X220CrVMo13-4), 1.2436 (X210CrW12), 1.2601 (X165CrMoV12), 1.2880 (X165CrCoMo12) as well as 1.2884 (X210CrCoW12).
  • the object of the invention was a method for the manufacture of a steel material that specify a further improved wear resistance and Has dimensional stability.
  • An alloy steel produced according to the invention by spray compacting is distinguished, in contrast to steels produced by melt metallurgy, by a high carbon and an increased nitrogen content with a high content of special carbide-forming and nitride-forming elements, as a result of which a high wear resistance is achieved.
  • steel produced according to the invention can be hot worked well due to the homogeneity of its structure, despite the high alloy and hard phase contents.
  • These properties make steel produced according to the invention particularly suitable for the production of tools or components which are subject to high wear stresses, such as are generally given, for example, when cutting materials or in the plastics processing industry because of the filler contents of modern plastics.
  • the advantages of a steel produced according to the invention are, as mentioned, by its alloy components in combination with a special production method, the spray compacting known per se.
  • a gas atomizer a molten steel in an inert gas flow in spherical drops atomized.
  • the Metal drops quickly cooled to a temperature that between liquidus and solidus, often even below Solidus.
  • About the quick Solidification from the liquid phase can build up directly affects the structure of the sprayed block become.
  • spray compacting has proven to be proven effective method to get the one you want Nitrogen content in the mentioned ledeburitic steels contribute.
  • expensive Processes such as the pressure electroslag remelting process under nitrogen partial pressures of up to 42 bar or that powder metallurgical embroidery of metal powder Ammonia
  • spray compacting excels both through its effectiveness as well as through its Economy.
  • the method according to the invention was achieved by spraying with a nitrogen gas in the solidified block adjust up to 0.85 mass% nitrogen.
  • Steels produced according to the invention with particularly excellent Properties show next to the rest Alloy components have a C content of 1.0 - 1.9 % By mass, an N content of 0.05-0.5% by mass, an Si content 0.15 - 1.5 mass%, a Cr content of 5.0 - 10.0% by mass, an Mo content of 0.5-5.5% by mass, a V content ⁇ 3.5% by mass, an Nb content ⁇ 3.5 Mass% and a W content ⁇ 3.0%. so composite steels are particularly high Wear resistance.
  • a carbon content of more than 1 mass% and a Nitrogen content is more than 0.05 mass% advantageous to have a hardness of more than 60 HRC achieve.
  • the presence of the Carbon and nitrogen also the amount of contained hard phases and thus the wear behavior favorably influenced.
  • Tungsten for achieving hardness in one Steel produced according to the invention is not absolutely necessary is because the minimum contained special carbide formers sufficient for the formation of the required hard phases. To avoid increased manufacturing costs, therefore an addition of tungsten to the invention used steel can be dispensed with.
  • the chromium content is limited to values ⁇ 11.5 mass% and is preferably in the lower specified Salary range to also increase the toughness of the to influence steel produced according to the invention positively.
  • Steel produced according to the invention further precipitation hardening Elements such as up to 0.75 mass% Nitrogen, up to 0.05 mass% boron, up to 0.5 mass% Titanium, up to 0.5% by mass of zirconium and / or up to 0.25 % By mass aluminum.
  • additional Alloy components can be hardness and thus Wear resistance of a steel produced according to the invention can be further increased.
  • a steel produced according to the invention has an optimized wear resistance if the wear factor S V corresponding to the sum of its weighted contents of the carbide-forming elements Cr, Mo, V, Nb and W is between 0.55 and 3.42.
  • an optimized silicon-nitrogen ratio V SiN must be set in order to influence the effect of the austenite-stabilizing element nitrogen by the ferrite-stabilizing effect of the element silicon and to further optimize the wear resistance in the steels according to the invention. It has been shown that if the range of 0.21 to 3.31 provided for the nitrogen-silicon ratio according to the invention is observed, the residual austenite components which are harmful to the wear resistance can be reduced to values ⁇ 25% after a single tempering process.
  • the Invention contains nitrogen alloys produced according to the invention Steel additional hard materials, such as titanium carbide (TiC), Silicon carbide (SiC), niobium carbide (NbC), chromium carbide (CrC), titanium nitride (TiN) tungsten carbide (WC), in its Matrix, which in the course of spray compacting as a solid Particles have been injected into the spray.
  • This Measure causes a further increase in Resistance to wear, being the good Toughness properties of the nitrogen alloy matrix remain.
  • the tempering is preferably carried out at temperatures between 150 ° C and 300 ° C or between 500 ° C and 625 ° C.
  • a freeze for Austenite transformation is not required.
  • adhered to the process parameter according to the invention can be a hardness up to 68 HRC can be achieved even when on the move additional processing steps for further processing required are.
  • the hot forming can be done by Forging or rolling take place.
  • Table 1 shows the chemical compositions of seven steels A - G in mass%.
  • the wear factor S V the silicon-nitrogen ratio V SiN and the abrasion determined in a wear test in grams are recorded for each of the steels.
  • Steels A - D are those produced according to the invention Steels, while steels E - G are given for comparison are.
  • nitrogen-alloyed Steels are made of scrap and / or pure metals, respectively with the addition of the necessary alloy components a melt has been created. Then the Melt in a protective gas stream containing nitrogen spherical droplets have been atomized.
  • Figures 2 and 3 each show the micrograph of a by spray compacting in the manner according to the invention produced, nitrogen alloy steel in the annealed State, with the respective microstructure in FIG an enlargement of 100: 1 and in Fig. 3 with a Magnification of 500: 1 is shown.
  • Figures 4 and 5 show a comparison corresponding representation of the microstructure of the same Steel without added nitrogen if it is in is conventionally produced by melt metallurgy.
  • Steels according to the invention have a balanced ratio between the carbide- or carbonitride-forming elements, which is characterized by the wear factor S V , which lies between 0.55 and 3.42 and is determined in the manner explained above.
  • This balanced ratio of carbide / carbonitride formers leads to a superior wear resistance of steels produced according to the invention, which was confirmed in wear tests (FIG. 6).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Articles (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Heat Treatment Of Steel (AREA)
EP01933846A 2000-04-18 2001-04-18 Verfahren zur herstellung eines stickstofflegierten, sprühkompaktierten stahls, verfahren zu seiner herstellung Expired - Lifetime EP1274872B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130261T SI1274872T1 (en) 2000-04-18 2001-04-18 Method for the production of nitrogen alloyed steel, spray compacted steel

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10019042A DE10019042A1 (de) 2000-04-18 2000-04-18 Stickstofflegierter, sprühkompaktierter Stahl, Verfahren zu seiner Herstellung und Verbundwerkstoff hergestellt aus dem Stahl
DE10019042 2000-04-18
PCT/EP2001/004377 WO2001079575A1 (de) 2000-04-18 2001-04-18 Stickstofflegierter, sprühkompaktierter stahl, verfahren zu seiner herstellung und verbundwerkstoff hergestellt aus dem stahl

Publications (2)

Publication Number Publication Date
EP1274872A1 EP1274872A1 (de) 2003-01-15
EP1274872B1 true EP1274872B1 (de) 2004-10-06

Family

ID=7639075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01933846A Expired - Lifetime EP1274872B1 (de) 2000-04-18 2001-04-18 Verfahren zur herstellung eines stickstofflegierten, sprühkompaktierten stahls, verfahren zu seiner herstellung

Country Status (8)

Country Link
US (1) US20030156965A1 (ja)
EP (1) EP1274872B1 (ja)
JP (1) JP2004501276A (ja)
AT (1) ATE278816T1 (ja)
DE (2) DE10019042A1 (ja)
DK (1) DK1274872T3 (ja)
ES (1) ES2230308T3 (ja)
WO (1) WO2001079575A1 (ja)

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FI20021835A0 (fi) * 2002-10-16 2002-10-16 Valtion Teknillinen Kuumamuokkausteräkset muotin inserttien ruiskumuovaukseen
US7288157B2 (en) * 2005-05-09 2007-10-30 Crucible Materials Corp. Corrosion and wear resistant alloy
US7615123B2 (en) * 2006-09-29 2009-11-10 Crucible Materials Corporation Cold-work tool steel article
DE102006051936B4 (de) * 2006-11-01 2014-03-20 Zollern Bhw Gleitlager Gmbh & Co. Kg Verfahren zur Herstellung zweier miteinander verbundener Schichten und nach dem Verfahren herstellbares Funktionsbauteil
KR20100076068A (ko) * 2008-01-21 2010-07-05 히타치 긴조쿠 가부시키가이샤 표면 피복 처리용 합금 및 슬라이드 부재
TWI415956B (zh) * 2010-10-01 2013-11-21 Taiwan Powder Technologies Co Ltd 具有一大燒結窗的含鈦合金鋼金屬粉末及其燒結體
US20120107170A1 (en) * 2010-11-03 2012-05-03 Kuen-Shyang Hwang Alloy steel powder and their sintered body
DE102013008396B4 (de) 2013-05-17 2015-04-02 G. Rau Gmbh & Co. Kg Verfahren und Vorrichtung zum Umschmelzen und/oder Umschmelzlegieren metallischer Werkstoffe, insbesondere von Nitinol
WO2015193933A1 (ja) * 2014-06-19 2015-12-23 日鉄住金ハード株式会社 熱延工場巻取り設備のロール
CN105112787A (zh) * 2015-08-10 2015-12-02 霍邱县忠振耐磨材料有限公司 一种球磨机用稀土铬钼钒合金钢球及其制备方法
CN105112788A (zh) * 2015-08-10 2015-12-02 霍邱县忠振耐磨材料有限公司 一种球磨机用中碳中铬合金钢球及其制备方法
EP3305934B1 (en) * 2016-03-18 2020-02-19 Hitachi Metals, Ltd. Cold working tool material and cold working tool manufacturing method
CN109468533A (zh) * 2018-11-22 2019-03-15 杨佳意 一种生产钻头的合金钢材料及其制备工艺
EP4000762A1 (de) * 2020-11-19 2022-05-25 Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG Stahlpulver, verwendung eines stahls zur erzeugung eines stahlpulvers und verfahren zur herstellung eines bauteils aus einem stahlpulver

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Also Published As

Publication number Publication date
DK1274872T3 (da) 2005-02-07
ES2230308T3 (es) 2005-05-01
JP2004501276A (ja) 2004-01-15
DE50103992D1 (de) 2004-11-11
US20030156965A1 (en) 2003-08-21
WO2001079575A1 (de) 2001-10-25
DE10019042A1 (de) 2001-11-08
ATE278816T1 (de) 2004-10-15
EP1274872A1 (de) 2003-01-15

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