DK176960B1 - Temperature stable cast iron alloy and its use - Google Patents
Temperature stable cast iron alloy and its use Download PDFInfo
- Publication number
- DK176960B1 DK176960B1 DKPA200601155A DKPA200601155A DK176960B1 DK 176960 B1 DK176960 B1 DK 176960B1 DK PA200601155 A DKPA200601155 A DK PA200601155A DK PA200601155 A DKPA200601155 A DK PA200601155A DK 176960 B1 DK176960 B1 DK 176960B1
- Authority
- DK
- Denmark
- Prior art keywords
- iron alloy
- cast iron
- weight
- chromium
- carbon
- Prior art date
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Classifications
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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
- C22C37/06—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
Description
i DK 176960 B1in DK 176960 B1
Den foreliggende opfindelse angår anvendelse af en temperaturstabil støbejernslegering med høj slidbestandighed ved temperaturer på mellem 500 og 900 °C og med følgende sammensætning i vægt- %: krom: 15,0-20,0 %, 5 kulstof: 1,0-2,0 %, mangan: 1,5-2,0 %, silicium: 0,8-1,2 %, nikkel: 8,0-10,0 %, molybdæn: 0,8-1,2 % io rest jern og uundgåelige metalliske og ikke-metaliiske urenheder, hvor de ikke-metalliske urenheder omfatter kvælstof, ilt, fosfor og svovl.The present invention relates to the use of a temperature-stable cast-iron alloy with high abrasion resistance at temperatures between 500 and 900 ° C and having the following composition in wt%: 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% io residual iron and inevitable metallic and non-metallic impurities where the non-metallic impurities include nitrogen, oxygen, phosphorus and sulfur.
Indenfor mange industrier anvendes maskiner, der omfatter maskindele, som udsættes for stor slitage under forholdsvis høje temperaturer på over 500 °C.In many industries, machines are used which comprise machine parts that are subject to high wear and tear under relatively high temperatures of over 500 ° C.
15 Indenfor eksempelvis cementfremstillingsindustrien anvendes således en såkaldt klinkerkøler til afkøling cementklinker, der indføres i klinkerkøleren fra en forudgående ovn med en temperatur på mellem 1300 og 1450 ”0. Cementklinkerne transporteres gennem klinkerkøleren ved hjælp af passende transportmidler, der typisk udgøres af en eller anden form for elementer, der 2 0 bevæges frem og tilbage i cementklinkerne bevægelsesretning og herved udsættes for en stor slitage ved temperaturer på mellem 500 og 900 °C.Thus, for example, in the cement manufacturing industry, a so-called clinker cooler is used to cool cement clinker which is introduced into the clinker cooler from a prior furnace with a temperature of between 1300 and 1450 ”0. The cement clinkers are transported through the clinker cooler by suitable means of transport, which are typically constituted by some type of element which is moved back and forth in the direction of movement of the cement clinker and thereby is subjected to a great wear at temperatures between 500 and 900 ° C.
Fra WO 2004/104253 kendes en slidbestandig støbejernslegering med følgende sammensætning i vægt- %: 25 krom: 12-25%, kulstof: 1,5-6%, mangan: 2-7 %, silicium: op til 1,5 %, molybdæn: op til 2 %, 3 0 nikkel: op til 4 %, mikrolegeringselementer udvalgt fra gruppen bestående af titan, zirkonium, niobium, bor, vanadium, og wolfram: op til 2 % af hvert af en eller flere af elementerne og rest jern.From WO 2004/104253 a wear-resistant cast iron alloy of the following composition is known in weight%: 25 chromium: 12-25%, carbon: 1.5-6%, manganese: 2-7%, silicon: up to 1.5%, molybdenum: up to 2%, nickel: up to 4%, microalloy elements selected from the group consisting of titanium, zirconium, niobium, boron, vanadium, and tungsten: up to 2% of each or more of the elements and residual iron .
9 2 DK 176960 B19 2 DK 176960 B1
Ifølge skriftet varmebehandles legeringen, så den får en martensitisk matrix. Denne type matrix er meget hård og sprød, og maskinelementer fremstillet af et sådant materiale har let ved at revne, hvis de udsættes for stød eller slag. Endvidere er denne type matrix ikke termisk stabil, idet den bliver blødere ved 5 temperaturer over 400° C.According to the script, the alloy is heat-treated to obtain a martensitic matrix. This type of matrix is very hard and brittle, and machine elements made of such material easily crack if exposed to shock or impact. Furthermore, this type of matrix is not thermally stable in that it becomes softer at 5 temperatures above 400 ° C.
Ansøgeren til nærværende patentansøgning har desuden erfaring med anvendelse af en støbejernslegering ifølge europæisk norm 10295 (2002), materiale: G-X40 CrNiSi25-12, materiale nr.:1.4837, der har følgende ίο sammensætning i vægt- %: krom: 24,0-27,0 %, kulstof: 0,3-0,5 %, mangan: op til 2,0 %, silicium: 1,0-2,5 %, 15 molybdæn: op til 0,5 %, nikkel: 11,0-14,0 %, fosfor: op til 0,040 % og svovl: op til 0,030 % 2 o samt af en modificeret udgave heraf med følgende sammensætning i vægt- %: krom: 24,0-26,0 %, kulstof: 0,7-0,9 %, mangan: 0,6-1,0 %, silicium: 1,5-2,0 % og 25 nikkel: 2,5-3,5 %The applicant for the present patent application also has experience in using a cast iron alloy according to European Standard 10295 (2002), material: G-X40 CrNiSi25-12, material no: 1.48837 having the following composition in weight%: chromium: 24.0 -27.0%, carbon: 0.3-0.5%, manganese: up to 2.0%, silicon: 1.0-2.5%, molybdenum: up to 0.5%, nickel: 11 , 0-14.0%, phosphorus: up to 0.040% and sulfur: up to 0.030% 2 o, and of a modified version thereof having the following composition by weight%: chromium: 24.0-26.0%, carbon: 0.7-0.9%, manganese: 0.6-1.0%, silicon 1.5-2.0% and nickel: 2.5-3.5%
Erfaringerne med disse to materialer har vist, at de begge efter længere tids opvarmning til temperaturer mellem 500 og 900 °C har tendens til at danne sigmafase, der er en sprød intermetallisk fase bestående af lige dele jern og 30 krom og dermed blive sprøde, og at de ikke er specielt slidbestandige.Experience with these two materials has shown that after prolonged heating to temperatures between 500 and 900 ° C, they both tend to form sigma phase which is a brittle intermetallic phase consisting of equal parts iron and chromium and thus become brittle, and that they are not particularly abrasion resistant.
Fra JP7102916 A kendes en legering, der består af følgende komponenter: C: 0,1-3 %, Cr: 10-40 %, Mn: 0,1-20 %, Mo: 0,1-20 %, Ni: 3-35 %, Si: 0,1-6 %, Fe: 3 DK 176960 B1 rest. Ifølge skriftet er mangan og nikkel tilsat for at opnå austenitisk stabilisering, og det må derfor antages, at legeringen antager en austenitisk matrix.From JP7102916 A is known an alloy consisting of the following components: C: 0.1-3%, Cr: 10-40%, Mn: 0.1-20%, Mo: 0.1-20%, Ni: 3 -35%, Si: 0.1-6%, Fe: 3 DK 176960 B1 residue. According to the script, manganese and nickel are added to achieve austenitic stabilization, and it is therefore assumed that the alloy adopts an austenitic matrix.
Fra DD205232 A1 kendes anvendelsen af en legering til maskindele i 5 klinkerkølere, der anvendes til afkøling af cementklinker. Denne kendte legering, der har en austenitisk struktur, kan anvendes ved temperaturer over 800 °C og består af følgende komponenter: 0,64 % C, 3,1 % Si, 10,3 % Mn, 20,3 % Cr, 0,034 % P, 0,029 % S, 0,42 % Ti, 0,035 % Al, rest Fe.From DD205232 A1, the use of an alloy for machine parts in 5 tile coolers known for cooling cement tiles is known. This known alloy having an austenitic structure can be used at temperatures above 800 ° C and consists of the following components: 0.64% C, 3.1% Si, 10.3% Mn, 20.3% Cr, 0.034% P, 0.029% S, 0.42% Ti, 0.035% Al, residual Fe.
io Formålet med den foreliggende opfindelse er at angive en støbejernslegering, der har en højere slidbestandighed og en mindre tendens til dannelse af sigmafase ved temperaturer på mellem 500 og 900 °C end de i øjeblikket anvendte støbejernslegeringer.The object of the present invention is to provide a cast iron alloy having a higher abrasion resistance and a lower tendency to form sigma phase at temperatures between 500 and 900 ° C than the currently used cast iron alloys.
15 Dette opnås ifølge opfindelsen ved at anvende en støbejernslegering med den i indledningen angivne sammensætning til maskindele i klinkerkølere for afkøling af cementklinker.This is achieved according to the invention by using a cast iron alloy of the composition specified in the preamble for machine parts in clinker coolers for cooling cement clinker.
Herved opnås, at klinkerkøleres maskindele, der er fremstillet af denne 2 0 støbejernslegering, har en højere slidbestandighed og en væsentlig mindre tendens til dannelse af den uønskede sigmafase ved opvarmning til temperaturer mellem 500 og 900 °C end maskindele, der er fremstillet af de ovenfor beskrevne og hidtil anvendte legeringer.Hereby, the machine parts of tile coolers made of this cast iron alloy are obtained having a higher abrasion resistance and a significantly less tendency to form the undesirable sigma phase at heating to temperatures between 500 and 900 ° C than machine parts made from the above described and previously used alloys.
25 Laboratorieforsøg udført af ansøgeren til nærværende patentansøgning har indikeret, at legeringen ifølge opfindelsen har klart bedre slidegenskaber end legeringen ifølge europæisk norm 10295 og den modificerede udgave heraf, begge defineret ovenfor. Forsøgsresultaterne viste, at legeringen ifølge opfindelsen har en slidbestandighed, der er omtrent fire gange så høj som den 30 for legeringen ifølge europæisk norm 10295 og dobbelt så høj som den for den modificerede udgave heraf. Den forbedrede slidbestandighed skyldes primært at DK 176960 B1 ϊ 4 kulstof-krom forholdet er optimeret, således at der dannes flest mulig kromkarbider, som er den slidbestandige komponent i legeringen.Laboratory tests performed by the applicant for the present patent application have indicated that the alloy of the invention clearly has better abrasion properties than the alloy of European Standard 10295 and the modified version thereof, both defined above. The test results showed that the alloy of the invention has a wear resistance approximately four times as high as that of the alloy of European Standard 10295 and twice as high as that of the modified version thereof. The improved wear resistance is primarily due to the optimization of the DK 176960 B1 ϊ 4 carbon-chromium ratio, so that as many chromium carbides as possible are formed, which is the wear-resistant component of the alloy.
Endvidere har laboratorieforsøg, hvor legeringen ifølge opfindelsen over en 5 periode på 8 uger blev udsat for en varmebehandling ved en temperatur på 500 °C og efterfølgende mikroskoperet, vist, at den er særdeles varmestabil, idet der ingen tegn var på dannelse af sigmafase.Furthermore, laboratory experiments in which the alloy of the invention was subjected to a heat treatment at a temperature of 500 ° C for a period of 8 weeks and subsequently microscoped have shown that it is extremely heat stable, with no evidence of sigma phase formation.
For at undgå væsentlige forringelser af jernlegeringens mekaniske egenskaber io bør de ikke-metalliske urenheder omfattende kvælstof, ilt, fosfor og svovl ikke overskride følgende maksimale indhold: maksimalt 0,020 N, maksimalt 10 ppm O, maksimalt 0,040 P, og maksimalt 0,030 S.To avoid significant deterioration of the iron alloy's mechanical properties, the non-metallic impurities comprising nitrogen, oxygen, phosphorus and sulfur should not exceed the following maximum contents: maximum 0.020 N, maximum 10 ppm O, maximum 0.040 P, and maximum 0.030 S.
15 Støbejernlegeringen ifølge opfindelsen omfatter fortrinsvis 16,5-19,5 vægt- %, mest fortrinsvis 17,0-19,0 vægt- % krom.The cast iron alloy of the invention preferably comprises 16.5-19.5% by weight, most preferably 17.0-19.0% by weight chromium.
Endvidere omfatter støbejernlegeringen ifølge opfindelsen fortrinsvis 1,25- 1,85 vægt- % kulstof, mest fortrinsvis 1,5-1,7 vægt- % kulstof.Furthermore, the cast iron alloy of the invention preferably comprises 1.25-1.8% by weight of carbon, most preferably 1.5-1.7% by weight of carbon.
2020
Støbejernlegeringen ifølge opfindelsen har fortrinsvis en austenitisk matrix.The cast iron alloy of the invention preferably has an austenitic matrix.
Støbejernlegeringen kan fremstilles og udstøbes til råemner ved almindelig kendte teknikker.The cast-iron alloy can be manufactured and cast into blanks by commonly known techniques.
2525
Claims (6)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200601155A DK176960B1 (en) | 2006-09-08 | 2006-09-08 | Temperature stable cast iron alloy and its use |
| RU2009106999A RU2430182C2 (en) | 2006-09-08 | 2007-06-12 | Heat-resistant cast iron alloy and its use |
| PCT/IB2007/052214 WO2008029305A1 (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 |
| UAA200901098A UA93557C2 (en) | 2006-09-08 | 2007-06-12 | temperature-stable iron-carbon alloy AND APPLICATION thereof |
| EP20070766720 EP2059622A1 (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 |
| MX2009002119A MX2009002119A (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 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200601155A DK176960B1 (en) | 2006-09-08 | 2006-09-08 | Temperature stable cast iron alloy and its use |
| DK200601155 | 2006-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK200601155A DK200601155A (en) | 2008-03-09 |
| DK176960B1 true DK176960B1 (en) | 2010-07-26 |
Family
ID=39156875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA200601155A DK176960B1 (en) | 2006-09-08 | 2006-09-08 | 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 |
Family Cites Families (8)
| 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 |
| DE2818734A1 (en) * | 1978-04-28 | 1979-10-31 | Wahl Verschleiss Tech | Low cost armour plating - comprises chilled cast iron layers opt. contg. hard inserts |
| 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 |
| AU2003902535A0 (en) * | 2003-05-22 | 2003-06-05 | Weir Warman Ltd | Wear resistant cast iron |
-
2006
- 2006-09-08 DK DKPA200601155A patent/DK176960B1/en not_active IP Right Cessation
-
2007
- 2007-06-12 EP EP20070766720 patent/EP2059622A1/en not_active Withdrawn
- 2007-06-12 RU RU2009106999A patent/RU2430182C2/en not_active IP Right Cessation
- 2007-06-12 UA UAA200901098A patent/UA93557C2/en unknown
- 2007-06-12 BR BRPI0716636-2B1A patent/BRPI0716636B1/en not_active IP Right Cessation
- 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 US US12/377,043 patent/US20110042051A1/en not_active Abandoned
- 2007-06-12 WO PCT/IB2007/052214 patent/WO2008029305A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| MX2009002119A (en) | 2009-03-09 |
| US20110042051A1 (en) | 2011-02-24 |
| RU2430182C2 (en) | 2011-09-27 |
| UA93557C2 (en) | 2011-02-25 |
| CN101512031A (en) | 2009-08-19 |
| RU2009106999A (en) | 2010-10-20 |
| WO2008029305A1 (en) | 2008-03-13 |
| BRPI0716636B1 (en) | 2014-10-29 |
| DK200601155A (en) | 2008-03-09 |
| EP2059622A1 (en) | 2009-05-20 |
| CN101512031B (en) | 2010-12-08 |
| BRPI0716636A2 (en) | 2012-12-25 |
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| PBP | Patent lapsed |
Effective date: 20150930 |