EP3194632B1 - Alliage de fonte, pièce et procédé de fabrication correspondants - Google Patents

Alliage de fonte, pièce et procédé de fabrication correspondants Download PDF

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Publication number
EP3194632B1
EP3194632B1 EP15763023.7A EP15763023A EP3194632B1 EP 3194632 B1 EP3194632 B1 EP 3194632B1 EP 15763023 A EP15763023 A EP 15763023A EP 3194632 B1 EP3194632 B1 EP 3194632B1
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EP
European Patent Office
Prior art keywords
alloy
content
alloy according
cast
nickel
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.)
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Application number
EP15763023.7A
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German (de)
English (en)
French (fr)
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EP3194632A1 (fr
Inventor
Jean-Baptiste PRUNIER
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.)
Ferry-Capitain Sarl
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Ferry-Capitain Sarl
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Publication of EP3194632A1 publication Critical patent/EP3194632A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • C22C37/08—Cast-iron alloys containing chromium with nickel
    • 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
    • C22C38/02—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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
    • 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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Definitions

  • the present invention relates to a cast iron alloy.
  • the tools must have a low coefficient of thermal expansion, or a coefficient of thermal expansion close to that of the material or the material to be molded in the temperature range used for forming.
  • thermoplastic materials polyimides for example
  • composites containing these same thermoplastics require higher temperatures.
  • Increasing the forming temperature also allows in some cases to decrease the duration of a production cycle.
  • a Ceramvar cast iron alloy with spheroidal graphite or lamellar graphite comprising, in% by weight, the following elements: Carbon (C) between 0.05%, Silicon (Si) 0.30%, Nickel (Ni) between 28.5% and 29.5% , Cobalt (Co) between 19.5% and 20.5%, Manganese (Mn) 0.50%, and / or Phosphorus (P) 0.020, and / or Sulfur (S) 0.020.
  • Steel tools used to manufacture parts made of composite material or of thermoplastic material are also known. These tools, however, have a relatively large wall thickness, since the steel is likely to have structural defects (sinkholes) when the tools are manufactured with a small thickness.
  • the object of the invention is to enable the manufacture by molding of a cast iron part whose thermal expansion is low for high temperatures and in particular up to 400 ° C., and whose expansion coefficient remains stable up to these temperatures. high temperatures.
  • the invention aims to design an alloy that allows the manufacture of a tool having a low coefficient of expansion and stable, including at high temperatures. Also, the invention aims to design an alloy that allows the manufacturing such a tool having a small wall thickness while certainly having few structural defects.
  • the subject of the invention is a spheroidal graphite or graphite graphite cast iron alloy consisting of, in% by weight, the following elements: Carbon (C) between 1.2% and 3.5%, silicon ( If) between 1.0% or 1.2% and 3%, Nickel (Ni) between 26% and 31%, Cobalt (Co) between 15% and 20%.
  • the alloy comprises: Magnesium (Mg) between 0.02% and 0.10%, Manganese (Mn) ⁇ 1.5%, Chromium (Cr) ⁇ 0.5%, and / or Phosphorus (P) ⁇ 0 , 12 or ⁇ 0.04%, and / or Sulfur (S) ⁇ 0.11 or ⁇ 0.03%, and / or Molybdenum (Mo) ⁇ 0.5%, and / or Copper (Cu) ⁇ 0, 5%, the rest being Iron and unavoidable impurities.
  • Mg Magnesium
  • Mn Manganese
  • Cr Chromium
  • S S
  • Cu Copper
  • the invention also relates to a part made of a cast iron alloy, as defined above, and in particular the part being a tool.
  • the subject of the invention is a cast iron alloy. It allows to obtain parts whose coefficient of thermal expansion is weak and stable up to a temperature of 400 ° C.
  • the part is for example a tool, in particular a tool for manufacturing parts made of composite material or thermoplastic material.
  • composition data are given in% by weight of the total weight of the alloy.
  • a first aspect of the invention is the chemical composition of the alloy.
  • the alloy is a cast iron alloy.
  • the alloy may be a cast iron alloy with spheroidal graphite or lamellar graphite.
  • the alloy comprises, in addition to Fe, carbon (C) between 1.2% and 3.5%, silicon (Si) between 1% and 3%, nickel (Ni) between 26% and 31%, and Cobalt (Co) between 15% and 20%.
  • the alloy may comprise magnesium (Mg) between 0.02% and 0.10%.
  • the alloy may comprise manganese (Mn) up to 1.5%, or up to 0.8%.
  • the alloy may comprise chromium (Cr) at a content between traces and 0.5%.
  • the alloy may comprise phosphorus (P) at a content between traces and 0.04% or between traces and 0.12%.
  • the alloy may comprise sulfur (S) at a content between traces and 0.03% or between traces and 0.11%.
  • the alloy may comprise molybdenum (Mo) at a content between traces and 0.5%.
  • the alloy may comprise copper (Cu) at a content between traces and 0.5%.
  • the nickel (Ni) content of the alloy may be preferably between at least 27% or 28% and at most 30%.
  • the cobalt (Co) content of the alloy may be preferably from at least 16% to at most 18% or 19%.
  • the carbon content (C) of the alloy may be preferably between at least 1.4% or 1.5% and at most 3.1% or 3.3%.
  • the silicon (Si) content of the alloy may be preferably from at least 1.4% or 1.5% to at most 2.6% or 2.8%.
  • the Manganese content (Mn) of the alloy may be preferably between at least 0.01% and / or at most 1.0%.
  • the copper (Cu) content of the alloy may be preferably less than 0.2%, 0.3%, or 0.4%.
  • the Molybdenum (Mo) content of the alloy may be preferably less than 0.2%, 0.3%, or 0.4%.
  • Fe-Ni36 (trade name INVAR®). It is a steel developed in the late 19th century. It contains 36% nickel and iron. The curve representing the expansion coefficient of iron / nickel alloys has an anomaly around 36% nickel: the coefficient of expansion is then much lower than for the other compositions. This is valid for low temperatures up to 130 ° C.
  • the iron / nickel / cobalt alloy with 32% nickel and 5.5% cobalt has a lower coefficient of expansion than INVAR®, and above all, it keeps this property at higher temperatures.
  • Ni-Resist D5 ASTM A439
  • nickel (iron rest) has in particular a low coefficient of expansion: 5 * 10 -6 K -1 .
  • Ferrynox N33 ® (33% nickel, 4% cobalt) gives a low coefficient of expansion and stability (4 * 10 -6 K -1 ) up to 180 ° C.
  • Ferrynox N36 ® (36% nickel, 4% cobalt) has a higher coefficient of expansion (4.5 * 10 -6 K -1 ), but remains stable up to 250 ° C.
  • the behavior of the coefficient of thermal expansion as a function of the temperature of the two FerrynoxN36 and FerrynoxN33 alloys is illustrated in the single figure.
  • the alloy comprises, in addition to iron (Fe) and unavoidable impurities, only the following elements, within the limits indicated: VS Yes mn P S Cr Or MB Cu mg Co mini 1.2 1.2 footsteps footsteps footsteps footsteps 26 footsteps footsteps 0.02 15 Maxi 3.5 3 1.5 0.04 0.03 0.5 31 0.5 0.5 0.1 20
  • Example1 1.9 1.64 0.12 0.014 footsteps 0.03 29.44 footsteps 0,017 0.06 16.96
  • Example 2 1.9 1.63 0.12 0.014 0.006 0.03 29.06 0,002 0.02 0.04 17.49
  • This alloy is a spheroidal graphite cast iron.
  • Example 1 The coefficient of thermal expansion of Example 1, indicated under the name Ferrynox N29K in the Figure, compared with thermal expansion coefficients of the two alloys of the state of the art (Ferrynox N33 and Ferrynox N36) is shown in the single FIG. .
  • Example 1 The coefficient of thermal expansion of Example 1 is less than 6.4 * 10 -6 K -1 for a temperature below 400 ° C. Also, the coefficient of thermal expansion is relatively stable over a wide temperature range. It is between 6 * 10 -6 K -1 and 7 * 10 -6 K -1 over the entire range from 150 ° C to 400 ° C.
  • the mechanical characteristics of the sample are as follows: Resistance limit Re (MPa) Rm (MPa) rupture limit Elongation after rupture A% at 20 ° C 298 483 28.4 at 200 ° C 214 380 29.8 at 300 ° C 146 350 30 at 400 ° C 166 341 30.5 at 450 ° C 156 336 30.9
  • Another aspect of the alloy according to the invention is that it is weldable.
  • the alloy comprises, in addition to the iron (Fe) and the unavoidable impurities, only the following elements within the limits indicated: VS Yes mn P S Cr Or MB Cu Co mini 1.2 1 footsteps footsteps footsteps footsteps 26 footsteps footsteps 15 Maxi 3.5 3 1.5 0.12 0.11 0.5 31 0.5 0.5 20 Example 1.9 1.7 0.45 0.04 0.07 0.03 28.96 0,002 0.02 17.54
  • the alloy is a lamellar graphite cast iron.
  • a second aspect of the invention is a part made of an alloy as defined above.
  • the piece is notably a tool.
  • the tool may comprise only portions of the alloy according to the invention or be entirely made of this alloy. Generally at least the form surface of the tool consists of the alloy according to the invention.
  • the tooling has a minimum wall thickness that is less than 50 mm.
  • a third aspect of the invention is the method of manufacturing a part made of an alloy according to the invention.
  • First of all the part for example a tool, is cast in a mold.
  • slow means less than 50 ° C / h, especially over the entire cooling period between casting of the part and solidification.
  • the workpiece can be heat treated, for example by annealing.
  • the alloy is used in particular for the manufacture of tools used subsequently for the manufacture of composite parts, for example thermoplastic material and carbon fibers.
  • the technical field can be aeronautics.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP15763023.7A 2014-09-15 2015-09-15 Alliage de fonte, pièce et procédé de fabrication correspondants Active EP3194632B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1458657A FR3025807B1 (fr) 2014-09-15 2014-09-15 Alliage de fonte, piece et procede de fabrication correspondants
PCT/EP2015/071109 WO2016041971A1 (fr) 2014-09-15 2015-09-15 Alliage de fonte, pièce et procédé de fabrication correspondants

Publications (2)

Publication Number Publication Date
EP3194632A1 EP3194632A1 (fr) 2017-07-26
EP3194632B1 true EP3194632B1 (fr) 2018-08-01

Family

ID=51842606

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Application Number Title Priority Date Filing Date
EP15763023.7A Active EP3194632B1 (fr) 2014-09-15 2015-09-15 Alliage de fonte, pièce et procédé de fabrication correspondants

Country Status (6)

Country Link
US (1) US10683567B2 (es)
EP (1) EP3194632B1 (es)
ES (1) ES2693509T3 (es)
FR (1) FR3025807B1 (es)
TR (1) TR201816113T4 (es)
WO (1) WO2016041971A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3063669B1 (fr) 2017-03-10 2021-11-19 Ferry Capitain Chassis moule monobloc pour peau de drapage de composites
US11618937B2 (en) 2019-10-18 2023-04-04 GM Global Technology Operations LLC High-modulus, high-strength nodular iron and crankshaft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69014085T2 (de) * 1989-12-15 1995-06-22 Inco Alloys Int Oxidationsbeständige Legierungen mit niedrigem Ausdehnungskoeffizient.
JP3654899B2 (ja) * 1992-12-15 2005-06-02 株式会社東芝 高強度低膨脹鋳鉄の製造方法
US7335428B2 (en) 2001-11-30 2008-02-26 Imphy Alloys Cooking vessel comprising a base made of a multilayer material and a side wall, and article of multilayer material
EP1975269A1 (fr) 2007-03-30 2008-10-01 Imphy Alloys Alliage austenitique fer-nickel-chrome-cuivre

Also Published As

Publication number Publication date
US20170260608A1 (en) 2017-09-14
TR201816113T4 (tr) 2018-11-21
FR3025807A1 (fr) 2016-03-18
FR3025807B1 (fr) 2016-10-14
WO2016041971A1 (fr) 2016-03-24
EP3194632A1 (fr) 2017-07-26
ES2693509T3 (es) 2018-12-12
US10683567B2 (en) 2020-06-16

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