EP0760019A1 - Hartguss mit hoher korrosions- und verschleissbeständigkeit - Google Patents
Hartguss mit hoher korrosions- und verschleissbeständigkeitInfo
- Publication number
- EP0760019A1 EP0760019A1 EP95921744A EP95921744A EP0760019A1 EP 0760019 A1 EP0760019 A1 EP 0760019A1 EP 95921744 A EP95921744 A EP 95921744A EP 95921744 A EP95921744 A EP 95921744A EP 0760019 A1 EP0760019 A1 EP 0760019A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- cast iron
- corrosion
- chilled casting
- wear resistant
- 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
Links
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 used for carbide formation in these materials, they only have a corrosion resistance which corresponds approximately to that of unalloyed cast iron.
- the material GX 170 Cr o 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 waters of flue gas desulfurization systems, corrosion resistance only occurs at very high Cr -Hold 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 casting material, the wear resistance corresponds approximately to that of the commercially available types of hard cast iron, 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 normally 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 incorporation of the chrome Carbides in the austenitic phase. Since the austenitic phase, unlike the ferrite phase, does not become brittle due to the precipitation of intermetallic phases or 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 obtain a structure that consists of precipitation-free ferrite, austenite and carbides, even after air cooling of large components, since the formation of austenite brings about a chromium enrichment of the ferrite phase and thereby the excretion of ⁇ phase promotes. Too high a Si content, which therefore affects ax. l% by weight is limited. With the composition proposed in claim 2, an optimal combination of corrosion and wear resistance is achieved.
- 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 leads to a better one
- 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.
- Fig. L is a diagram of the removal rates of the materials in hydroabrasive wear.
- Fig. 2 is a diagram of the corrosion rates in strongly acidic, chloride-containing medium (pH 0.5; 10 g / 1 Cl -; 60 ° C).
- 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 1 / 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.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polymerisation Methods In General (AREA)
- Mold Materials And Core Materials (AREA)
- Powder Metallurgy (AREA)
- Heat Treatment Of Articles (AREA)
Description
Claims
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 (de) | 1994-05-17 | 1995-05-11 | Hartguss mit hoher korrosions- und verschleissbeständigkeit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760019A1 true EP0760019A1 (de) | 1997-03-05 |
EP0760019B1 EP0760019B1 (de) | 1997-11-19 |
Family
ID=25936644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95921744A Expired - Lifetime EP0760019B1 (de) | 1994-05-17 | 1995-05-11 | Hartguss mit hoher korrosions- und verschleissbeständigkeit |
Country Status (8)
Country | Link |
---|---|
US (1) | US6165288A (de) |
EP (1) | EP0760019B1 (de) |
JP (1) | JP3897812B2 (de) |
CN (1) | CN1068068C (de) |
AT (1) | ATE160386T1 (de) |
BR (1) | BR9507840A (de) |
ES (1) | ES2111405T3 (de) |
WO (1) | WO1995031581A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017223602A1 (de) | 2017-12-21 | 2019-08-01 | KSB SE & Co. KGaA | Kreiselpumpe mit Gussbauteil |
EP4112222A1 (de) * | 2021-06-30 | 2023-01-04 | National Tsing Hua University | Korrosionsbeständige ferrochrom-massenlegierung und diese enthaltender gegenstand |
Families Citing this family (7)
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 |
CA3084610A1 (en) * | 2017-12-04 | 2019-06-13 | Weir Minerals Australia Limited | Tough and corrosion resistant white cast irons |
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 |
Family Cites Families (58)
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US1211511A (en) * | 1912-10-19 | 1917-01-09 | Hall Printing Press Company | Delivery-tray and support. |
US1245552A (en) * | 1916-04-10 | 1917-11-06 | Electro Metallurg Co | Alloy. |
US1375081A (en) * | 1918-07-27 | 1921-04-19 | Cleveland Brass Mfg Company | Acid-resisting alloy |
GB143829A (en) * | 1919-05-24 | 1921-01-27 | Percy Albert Ernest Armstrong | Improvements in stable surface alloy steel |
US1333151A (en) * | 1919-09-26 | 1920-03-09 | Electro Metallurg Co | Alloy |
US1389133A (en) * | 1920-01-14 | 1921-08-30 | Cleveland Brass Mfg Company | Heat-resisting alloy |
US1489429A (en) * | 1921-08-06 | 1924-04-08 | Carpenter Steel Co | Chromium-steel alloy |
US1454464A (en) * | 1922-03-03 | 1923-05-08 | Electro Metallurg Co | Chrome-iron sheet or article and process of making same |
GB220006A (en) * | 1923-02-09 | 1924-08-11 | Robert Abbott Hadfield | Improvements in or relating to alloys |
GB222158A (en) * | 1923-03-24 | 1924-09-24 | Electro Metallurg Co | The production of non-oxidizing non-brittle sheets, or articles wholly or partially made of sheets, of chrome iron alloys |
GB254762A (en) * | 1925-02-06 | 1926-07-06 | William Johnson | Improvements in or relating to the reduction of metal and making of alloys |
US1590277A (en) * | 1925-10-15 | 1926-06-29 | Electro Metallurg Co | Seamless hollow article and process of making same |
GB267687A (en) * | 1926-02-19 | 1927-03-24 | Paul Richard Kuehnrich | Improvements in the heat treatment of alloy steels |
GB272474A (en) * | 1926-06-14 | 1928-11-23 | Diamond Power Speciality | Improvement in boiler cleaners |
GB290924A (en) * | 1927-12-13 | 1928-05-24 | Whittemore Hulbert Whittemore | Improvements in boiler cleaners |
US1790177A (en) * | 1928-11-14 | 1931-01-27 | Stoody Co | Tough stable-surface alloy steel |
GB344399A (en) * | 1929-08-27 | 1931-02-27 | Bernhard Vervoort | Improved manufacture of stainless cast-iron articles |
GB342295A (en) * | 1929-10-25 | 1931-01-26 | Paul Richard Kuehnrich | Improvements in or relating to the manufacture of iron-chromium alloys |
GB362375A (en) * | 1930-05-19 | 1931-11-25 | Bernhard Vervoort | Improvements in and relating to the manufacture of cast iron articles |
DE701807C (de) * | 1930-10-15 | 1941-01-24 | Bernhard Vervoort | Herstellung von Formgussstuecken, die sowohl hohenren widerstehen muessen |
FR731183A (fr) * | 1931-02-13 | 1932-08-30 | Krupp Ag | Alliage de fonte et chrome |
CH159987A (de) * | 1931-02-13 | 1933-02-15 | Krupp Ag | Chromgusseisen-Legierung. |
US1990589A (en) * | 1931-07-29 | 1935-02-12 | Electro Metallurg Co | Alloy steel |
GB401644A (en) * | 1932-02-11 | 1933-11-16 | Krupp Ag | Improvements in chromium cast iron alloys |
US1984636A (en) * | 1933-06-26 | 1934-12-18 | Frank A Fahrenwald | Machinable stainless casting |
DE666627C (de) * | 1935-11-05 | 1938-11-18 | Bergische Stahlindustrie | Eisen-Chrom-Legierung fuer gut bearbeitbare und hochverschleissfeste Gegenstaende |
DE683956C (de) * | 1938-08-28 | 1939-11-18 | Bergische Stahlindustrie | Eisen-Chrom-Legierung fuer gut bearbeitbare und hochverschleissfeste Gegenstaende |
US2311878A (en) * | 1941-04-28 | 1943-02-23 | Hughes Tool Co | Method of attaching high chromium ferrous alloys to other metals |
US2268426A (en) * | 1941-11-10 | 1941-12-30 | Hughes Tool Co | Wear resisting alloy |
US2353688A (en) * | 1942-10-05 | 1944-07-18 | Electro Metallurg Co | Method of improving abrasion resistance of alloys |
US2946676A (en) * | 1957-04-29 | 1960-07-26 | Union Carbide Corp | Ferrochromium-aluminum alloy |
US3086858A (en) * | 1960-07-22 | 1963-04-23 | West Coast Alloys Co | Hard cast alloy |
US3690956A (en) * | 1966-02-24 | 1972-09-12 | Lamb Co F Jos | Valve |
US4043844A (en) * | 1970-09-01 | 1977-08-23 | Feltz Michel J | Heat-treated cast grinding members |
LU63431A1 (de) * | 1971-06-29 | 1973-01-22 | ||
SU382737A1 (ru) * | 1971-10-21 | 1973-05-25 | Центральный научно исследовательский институт технологии машиностроени | Чугун |
US4043842A (en) * | 1972-07-12 | 1977-08-23 | Joiret Victor L J | Grinding members |
US3970445A (en) * | 1974-05-02 | 1976-07-20 | Caterpillar Tractor Co. | Wear-resistant alloy, and method of making same |
US4080198A (en) * | 1977-02-24 | 1978-03-21 | Abex Corporation | Erosion and corrosion resistant alloys containing chromium, nickel and molybdenum |
DE2738091A1 (de) * | 1977-08-24 | 1979-03-01 | Wahl Verschleiss Tech | Verbundgusskoerper und verfahren zu seiner herstellung |
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-
1995
- 1995-05-11 JP JP52934695A patent/JP3897812B2/ja not_active Expired - Lifetime
- 1995-05-11 EP EP95921744A patent/EP0760019B1/de 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 US US08/737,491 patent/US6165288A/en not_active Expired - Lifetime
- 1995-05-11 BR BR9507840A patent/BR9507840A/pt not_active IP Right Cessation
- 1995-05-11 CN CN95193067A patent/CN1068068C/zh not_active Expired - Lifetime
- 1995-05-11 WO PCT/EP1995/001784 patent/WO1995031581A1/de active IP Right Grant
Non-Patent Citations (2)
Title |
---|
'Investigation of the Effect of Abrasive Wear on Carbide Structure in Cast Iron' * |
WEAR, Bd. 48, Nr. 1, Mai 1978 SWITZERLAND, Seiten 35-53, KATAVIC, I * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017223602A1 (de) | 2017-12-21 | 2019-08-01 | KSB SE & Co. KGaA | Kreiselpumpe mit Gussbauteil |
EP4112222A1 (de) * | 2021-06-30 | 2023-01-04 | National Tsing Hua University | Korrosionsbeständige ferrochrom-massenlegierung und diese enthaltender gegenstand |
Also Published As
Publication number | Publication date |
---|---|
BR9507840A (pt) | 1997-09-23 |
US6165288A (en) | 2000-12-26 |
AU679381B2 (en) | 1997-06-26 |
ATE160386T1 (de) | 1997-12-15 |
CN1148415A (zh) | 1997-04-23 |
JP3897812B2 (ja) | 2007-03-28 |
EP0760019B1 (de) | 1997-11-19 |
WO1995031581A1 (de) | 1995-11-23 |
ES2111405T3 (es) | 1998-03-01 |
AU2670395A (en) | 1995-12-05 |
JPH10500176A (ja) | 1998-01-06 |
CN1068068C (zh) | 2001-07-04 |
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