WO2008029305A1 - Temperature-stable cast-iron alloy and its use - Google Patents
Temperature-stable cast-iron alloy and its use Download PDFInfo
- Publication number
- WO2008029305A1 WO2008029305A1 PCT/IB2007/052214 IB2007052214W WO2008029305A1 WO 2008029305 A1 WO2008029305 A1 WO 2008029305A1 IB 2007052214 W IB2007052214 W IB 2007052214W WO 2008029305 A1 WO2008029305 A1 WO 2008029305A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iron alloy
- cast
- temperature
- alloy according
- iron
- Prior art date
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
-
- 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
Definitions
- the present invention relates to a temperature-stable cast-iron alloy having a high wear resistance at temperatures ranging between 500 and 900°C.
- clinker cooler is used for cooling cement clinker which is introduced to the clinker cooler from a preceding kiln at a temperature ranging between 1300 and 1450° C.
- the cement clinker is directed through the clinker cooler by means of appropriate means of conveyance which are typically made up of some form of elements which are reciprocated in the direction of movement of the cement clinker, and thus exposed to significant wear at temperatures ranging between 500 and 900 °C.
- a wear-resistant cast-iron alloy having the following composition expressed in weight percentages: chromium: 12-25 %, carbon: 1.5-6 %, manganese: 2-7 %, silicon: up to 1.5%, molybdenum: up to 2 %, nickel: up to 4 %, micro alloying elements selected from the group consisting of titanium, zirconium, niobium, boron, vanadium, and tungsten: up to 2 % of each of one or more of the elements, and balance iron.
- the alloy is subjected to heat treatment in order to give it a martensitic matrix.
- This type of matrix is very hard and brittle, and machine elements manufactured from such material are prone to cracking if subjected to impacts or blows. Furthermore, this type of matrix lacks thermal stability due to its softening at temperatures in excess of 400° C.
- the applicant of the present patent application also has experience with regard to a cast-iron alloy according to European standard 10295 (2002), material: G-X40 CrNiSi25-12, Material No.
- both materials tend to form a sigma phase which is a brittle inter-metallic phase consisting of equal parts of iron and chromium, and hence be brittle, and that they are not particular wear resistant.
- a cast-iron alloy according to the invention having the following composition expressed in weight percentages: chromium: 15.0-20.0 %, carbon: 1.0-2.0 %, manganese: 1.5-2.0 %, silicon: 0.8-1.2 %, nickel: 8.0-10.0 %, molybdenum: 0.8-1.2 % balance iron and unavoidable metallic and non-metallic contaminants, where the non-metallic contaminants comprise nitrogen, oxygen, phosphorous and sulphur.
- the alloy according to the invention has significantly improved wear characteristics compared to the alloy according to the European standard 10295 and the modified version hereof, both defined above.
- the test results show that the alloy according to the invention has a wear resistance which is approximately four times higher than that of the alloy according to European standard 10295 and twice as high as that of the modified version hereof.
- the improved wear resistance is mainly ascribable to the optimization of the carbon-chromium ratio, resulting in optimum formation of chromium carbides which constitute the wear-resistant component of the alloy.
- the cast-iron alloy according to the invention preferably comprises 16.5-19.5 weight percentage, most preferably 17.0-19.0 weight percentage chromium.
- the cast-iron alloy according to the invention preferably comprises 1.25-1.85 weight percentage carbon, most preferably 1.5- 1.7 weight percentage carbon.
- the cast-iron alloy according to the invention preferentially has an austenitic matrix.
- the cast-iron alloy can be manufactured and cast into blanks using generally known techniques.
- the described cast-iron alloy is particularly suitable for use in connection with machine parts in clinker coolers for cooling cement clinker.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Heat Treatment Of Articles (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20070766720 EP2059622A1 (en) | 2006-09-08 | 2007-06-12 | Temperature-stable cast-iron alloy and its use |
US12/377,043 US20110042051A1 (en) | 2006-09-08 | 2007-06-12 | Temperature stable cast-iron alloy and its use |
MX2009002119A MX2009002119A (en) | 2006-09-08 | 2007-06-12 | Temperature-stable cast-iron alloy and its use. |
CN2007800329727A CN101512031B (en) | 2006-09-08 | 2007-06-12 | Temperature-stable cast-iron alloy and its use |
BRPI0716636-2B1A BRPI0716636B1 (en) | 2006-09-08 | 2007-06-12 | TEMPERATURE STABLE CAST IRON ALLOY |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA200601155 | 2006-09-08 | ||
DKPA200601155A DK176960B1 (en) | 2006-09-08 | 2006-09-08 | Temperature stable cast iron alloy and its use |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008029305A1 true WO2008029305A1 (en) | 2008-03-13 |
Family
ID=39156875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2007/052214 WO2008029305A1 (en) | 2006-09-08 | 2007-06-12 | Temperature-stable cast-iron alloy and its use |
Country Status (9)
Country | Link |
---|---|
US (1) | US20110042051A1 (en) |
EP (1) | EP2059622A1 (en) |
CN (1) | CN101512031B (en) |
BR (1) | BRPI0716636B1 (en) |
DK (1) | DK176960B1 (en) |
MX (1) | MX2009002119A (en) |
RU (1) | RU2430182C2 (en) |
UA (1) | UA93557C2 (en) |
WO (1) | WO2008029305A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102230123B (en) * | 2011-06-17 | 2013-10-02 | 湖南长高新材料股份有限公司 | Chromium-based modified wear-resistant cast iron and preparation method thereof |
CN103741011A (en) * | 2013-12-27 | 2014-04-23 | 黄忠波 | Cast iron alloy with high wear resistance and temperature stability |
CN103741015A (en) * | 2013-12-27 | 2014-04-23 | 黄忠波 | Cast iron alloy with high wear resistance and high-temperature stability |
IT201900012738A1 (en) * | 2019-07-24 | 2021-01-24 | Freni Brembo Spa | CAST IRON, ESPECIALLY FOR DISC BRAKE COMPONENTS |
EA037998B1 (en) * | 2020-01-10 | 2021-06-22 | Физули Расул оглы Расулов | Alloyed material for obtaining wear-resistant and corrosion-resistant parts |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2818734A1 (en) * | 1978-04-28 | 1979-10-31 | Wahl Verschleiss Tech | Low cost armour plating - comprises chilled cast iron layers opt. contg. hard inserts |
WO2004104253A1 (en) * | 2003-05-22 | 2004-12-02 | Weir Warman Limited | Wear resistant cast iron |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3543413A (en) * | 1968-12-18 | 1970-12-01 | Hanford Foundry Co | Removable clinker cooler grate plates and support frame therefor |
US4477283A (en) * | 1981-07-21 | 1984-10-16 | Eddie K. Wilson, Sr. | Process and apparatus for producing hydraulic cements |
CN1027548C (en) * | 1989-05-06 | 1995-02-01 | 机械电子工业部沈阳铸造研究所 | Anti-abrasive and anti-corrosive austenic cast iron and its producing technology |
US5202087A (en) * | 1992-07-31 | 1993-04-13 | The Carondelet Corporation | Cement cooler grate alloy |
CN1028376C (en) * | 1993-06-11 | 1995-05-10 | 山东省冶金研究所 | Low-carbon nigh Cr cast iron wear-resisting material |
US5674449A (en) * | 1995-05-25 | 1997-10-07 | Winsert, Inc. | Iron base alloys for internal combustion engine valve seat inserts, and the like |
-
2006
- 2006-09-08 DK DKPA200601155A patent/DK176960B1/en not_active IP Right Cessation
-
2007
- 2007-06-12 US US12/377,043 patent/US20110042051A1/en not_active Abandoned
- 2007-06-12 MX MX2009002119A patent/MX2009002119A/en active IP Right Grant
- 2007-06-12 CN CN2007800329727A patent/CN101512031B/en not_active Expired - Fee Related
- 2007-06-12 RU RU2009106999A patent/RU2430182C2/en not_active IP Right Cessation
- 2007-06-12 WO PCT/IB2007/052214 patent/WO2008029305A1/en active Application Filing
- 2007-06-12 BR BRPI0716636-2B1A patent/BRPI0716636B1/en not_active IP Right Cessation
- 2007-06-12 EP EP20070766720 patent/EP2059622A1/en not_active Withdrawn
- 2007-06-12 UA UAA200901098A patent/UA93557C2/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2818734A1 (en) * | 1978-04-28 | 1979-10-31 | Wahl Verschleiss Tech | Low cost armour plating - comprises chilled cast iron layers opt. contg. hard inserts |
WO2004104253A1 (en) * | 2003-05-22 | 2004-12-02 | Weir Warman Limited | Wear resistant cast iron |
Also Published As
Publication number | Publication date |
---|---|
CN101512031B (en) | 2010-12-08 |
US20110042051A1 (en) | 2011-02-24 |
BRPI0716636B1 (en) | 2014-10-29 |
CN101512031A (en) | 2009-08-19 |
RU2009106999A (en) | 2010-10-20 |
EP2059622A1 (en) | 2009-05-20 |
DK176960B1 (en) | 2010-07-26 |
MX2009002119A (en) | 2009-03-09 |
BRPI0716636A2 (en) | 2012-12-25 |
DK200601155A (en) | 2008-03-09 |
UA93557C2 (en) | 2011-02-25 |
RU2430182C2 (en) | 2011-09-27 |
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