EP0760019B1 - Fonte coquillee a haute resistance a la corrosion et a l'usure - Google Patents
Fonte coquillee a haute resistance a la corrosion et a l'usure Download PDFInfo
- Publication number
- EP0760019B1 EP0760019B1 EP95921744A EP95921744A EP0760019B1 EP 0760019 B1 EP0760019 B1 EP 0760019B1 EP 95921744 A EP95921744 A EP 95921744A EP 95921744 A EP95921744 A EP 95921744A EP 0760019 B1 EP0760019 B1 EP 0760019B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- chilled casting
- corrosion
- pct
- wear
- 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
Links
- 238000005260 corrosion Methods 0.000 title abstract description 16
- 230000007797 corrosion Effects 0.000 title abstract description 16
- 229910000968 Chilled casting Inorganic materials 0.000 title abstract description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 9
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 8
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract 2
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 2
- 238000013459 approach Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 20
- 239000011651 chromium Substances 0.000 description 14
- 229910052804 chromium Inorganic materials 0.000 description 8
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001149 41xx steel Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- -1 Chromium carbides Chemical class 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910019932 CrNiMo Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000002156 mixing Methods 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
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
- Y10T428/12799—Next to Fe-base component [e.g., galvanized]
Definitions
- C-containing Fe-based Cr hard cast iron in applications with hydroabrasive wear.
- a material of this grade has a C content of over 2.0% by weight. Examples of this are the materials No. 0.9630, No. 0.9635, No. 0.9645 and No. 0.9655. Since a large proportion of the Cr is consumed for carbide formation in these materials, they only have a corrosion resistance which roughly corresponds to that of unalloyed cast iron.
- the material GX 170 CrMo 25 2 is an example of this.
- the entire group, to which the material mentioned belongs, has the major disadvantage that in chemically aggressive media, such as acidic, chloride-containing water from flue gas desulfurization systems, corrosion resistance only occurs at very high Cr Is achieved.
- Corrosion-resistant stainless steels are therefore used for aggressive media of the type mentioned, the wear resistance of which is slightly improved by a low carbon content ( ⁇ 0.5%) and the resulting low volume fraction of carbides.
- the material 1.4464 is an example of this.
- the invention has for its object to provide a metallic cast material, the wear resistance corresponds approximately to that of the commercially available hard cast types, but which is also characterized by a high corrosion resistance in aggressive media.
- the material according to the invention also has good castability. It can therefore be manufactured in conventional stainless steel foundries. This chilled cast iron is also easy to machine.
- the austenite former nickel Due to the targeted addition of the austenite former nickel in the concentration range of 5 to 12 MA%, it is possible to set the ratio of the phase fractions ferrite and austenite in the matrix in a defined manner.
- the positive properties of a duplex structure in stainless steel are used here.
- the usually extremely high brittleness of chilled cast iron grades with high C contents and a carbide network in a ferritic matrix is avoided by the predominant storage of chromium carbides in the austenitic phase. Since the austenitic phase, unlike the ferrite phase, does not become embrittled through the precipitation of intermetallic phases or through segregation processes, the risk of cracking between carbides and the matrix is not as great as with a purely ferritic matrix.
- the upper limit is determined by the requirement to maintain a structure consisting of precipitation-free ferrite, austenite and carbides even after air cooling of large components, since the formation of austenite causes a chromium enrichment of the ferrite phase and thereby promotes the elimination of the ⁇ phase.
- a too high Si content would have the same undesirable effect, which would therefore lead to a max. 1% by weight is limited.
- the molybdenum content within the limits specified in claims 1 to 3 is essential for the corrosion resistance, especially in acid media containing chloride.
- the Cu content is limited to 3% by mass.
- a low copper content results in better corrosion resistance in oxidizing media; therefore it is a component of commercially available high-alloy duplex steels. It is also an advantage of the Cu content permitted in the material according to the invention that recycling material of commercially available, high-alloy cast steel can be used when melting.
- the corrosion and wear resistance of the material according to the invention can be adjusted according to a specified requirement profile.
- the material according to the invention has a clear superiority over the previously known chilled cast iron grades used when subjected to hydroabrasive wear.
- a model wear apparatus was used, in which quartz sand-water was used as an attacking agent in a mixing ratio of 1: 1 with a grain size of 0.9 to 1.2 mm.
- the test duration was two hours each.
- a speed of 3000 l / min was run.
- Each material sample had a diameter of 55 mm and a thickness of 5 mm.
- the ordinates of the diagrams shown in FIGS. 1 and 2 each show the removal in mm / a.
- On the abscissa are known letters A to D, in a subsequent first Materials specified in the table are occupied, while the identification E relates to the material according to the invention, the composition of which is shown in a second table.
- Table 1 Known materials used for the tests Labelling Nickname A GX 250 CrMo 15 3 B GX 170 CrMo 25 2 C. GX 3 CrNiMoCu 24 6 D GX 40 CrNiMo 27 5 Alloy composition of the material according to the invention used for the tests Labelling C. Si Mn Cr Ni Mon Cu Fe E 1.5 0.7 0.6 42.1 8.2 2.5 1.6 rest
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heat Treatment Of Steel (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Mold Materials And Core Materials (AREA)
- Powder Metallurgy (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polymerisation Methods In General (AREA)
- Heat Treatment Of Articles (AREA)
Claims (5)
- Fonte blanche résistante à la corrosion et à l'usure, caractérisée para) la composition en % en poids suivante:Cr = 36 à 46Ni = 5 à 12Mo = 2 à 6Cu ≤ 3N ≤ 0,2Si ≤ 1,5Mn ≤ 1,5C = 1,4 à 1,9au choix de 0,5 à 2,5 % en poids de V,
le restant étant du Fe et des impuretés conditionnées par la fusion du minerai;b) la composition en % en volume suivante:les carbures présentant une structure sous forme de réseau.Austénite = 20 à 40Ferrite = 20 à 40Carbure = 20 à 40 - Fonte blanche résistante à la corrosion et à l'usure selon la revendication 1, caractérisée par la composition en % en poids suivante:Cr = 38,5 à 41,5Ni = 5 à 7Mo = 2 à 3Cu ≤ 3N = 0,1 à 0,2Si ≤ 1Mn ≤ 1,5C = 1,4 à 1,6
- Fonte blanche résistante à la corrosion et à l'usure selon la revendication 1, caractérisée par la composition en % en poids suivante:Cr = 42 à 44Ni = 8 à 10Mo = 2 à 4Cu ≤ 3N ≤ 0,1Si = 1 à 2Mn ≤ 1,5C = 1,4 à 1,6la portion ferritique étant caractérisée par la précipitation de phases intermétalliques.
- Utilisation d'une fonte blanche selon l'une quelconque des revendications 1 à 3 pour des pièces de construction, qui entrent en contact avec des milieux corrosifs contenant des matières solides à l'état fluide.
- Utilisation d'une fonte blanche selon l'une quelconque des revendications 1 à 3 pour des pompes et des ferrures, qui entrent en contact avec des milieux corrosifs contenant des matières solides.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4417261 | 1994-05-17 | ||
DE4417261 | 1994-05-17 | ||
DE19512044 | 1995-03-31 | ||
DE19512044A DE19512044A1 (de) | 1994-05-17 | 1995-03-31 | Hartguß mit hoher Korrosions- und Verschleißbeständigkeit |
PCT/EP1995/001784 WO1995031581A1 (fr) | 1994-05-17 | 1995-05-11 | Fonte coquillee a haute resistance a la corrosion et a l'usure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760019A1 EP0760019A1 (fr) | 1997-03-05 |
EP0760019B1 true EP0760019B1 (fr) | 1997-11-19 |
Family
ID=25936644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95921744A Expired - Lifetime EP0760019B1 (fr) | 1994-05-17 | 1995-05-11 | Fonte coquillee a haute resistance a la corrosion et a l'usure |
Country Status (8)
Country | Link |
---|---|
US (1) | US6165288A (fr) |
EP (1) | EP0760019B1 (fr) |
JP (1) | JP3897812B2 (fr) |
CN (1) | CN1068068C (fr) |
AT (1) | ATE160386T1 (fr) |
BR (1) | BR9507840A (fr) |
ES (1) | ES2111405T3 (fr) |
WO (1) | WO1995031581A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019120975A1 (fr) | 2017-12-21 | 2019-06-27 | KSB SE & Co. KGaA | Pompe centrifuge à pièce coulée |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040258554A1 (en) * | 2002-01-09 | 2004-12-23 | Roman Radon | High-chromium nitrogen containing castable alloy |
US6761777B1 (en) | 2002-01-09 | 2004-07-13 | Roman Radon | High chromium nitrogen bearing castable alloy |
US8479700B2 (en) * | 2010-01-05 | 2013-07-09 | L. E. Jones Company | Iron-chromium alloy with improved compressive yield strength and method of making and use thereof |
CN106222580B (zh) * | 2016-08-22 | 2018-07-24 | 合肥东方节能科技股份有限公司 | 一种高精轧机切分轮合金材料及其制备方法 |
CN107574352A (zh) * | 2017-09-12 | 2018-01-12 | 江苏金利化工机械有限公司 | 一种可硬化的奥氏体合金 |
WO2019109138A1 (fr) * | 2017-12-04 | 2019-06-13 | Weir Minerals Australia Limited | Fontes blanches résilientes et résistantes à la corrosion |
TW202302873A (zh) * | 2021-06-30 | 2023-01-16 | 國立清華大學 | 高強度耐腐蝕鐵鉻合金塊材及其用途 |
CN115537683B (zh) * | 2021-06-30 | 2024-03-12 | 叶均蔚 | 高强度耐腐蚀铁铬合金块材及其用途 |
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FR731183A (fr) * | 1931-02-13 | 1932-08-30 | Krupp Ag | Alliage de fonte et chrome |
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-
1995
- 1995-05-11 US US08/737,491 patent/US6165288A/en not_active Expired - Lifetime
- 1995-05-11 EP EP95921744A patent/EP0760019B1/fr not_active Expired - Lifetime
- 1995-05-11 AT AT95921744T patent/ATE160386T1/de active
- 1995-05-11 ES ES95921744T patent/ES2111405T3/es not_active Expired - Lifetime
- 1995-05-11 BR BR9507840A patent/BR9507840A/pt not_active IP Right Cessation
- 1995-05-11 WO PCT/EP1995/001784 patent/WO1995031581A1/fr active IP Right Grant
- 1995-05-11 CN CN95193067A patent/CN1068068C/zh not_active Expired - Lifetime
- 1995-05-11 JP JP52934695A patent/JP3897812B2/ja not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019120975A1 (fr) | 2017-12-21 | 2019-06-27 | KSB SE & Co. KGaA | Pompe centrifuge à pièce coulée |
Also Published As
Publication number | Publication date |
---|---|
CN1068068C (zh) | 2001-07-04 |
ATE160386T1 (de) | 1997-12-15 |
JPH10500176A (ja) | 1998-01-06 |
BR9507840A (pt) | 1997-09-23 |
AU2670395A (en) | 1995-12-05 |
JP3897812B2 (ja) | 2007-03-28 |
US6165288A (en) | 2000-12-26 |
ES2111405T3 (es) | 1998-03-01 |
CN1148415A (zh) | 1997-04-23 |
EP0760019A1 (fr) | 1997-03-05 |
WO1995031581A1 (fr) | 1995-11-23 |
AU679381B2 (en) | 1997-06-26 |
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