CN1818119A - High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen - Google Patents
High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen Download PDFInfo
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- CN1818119A CN1818119A CN 200510132461 CN200510132461A CN1818119A CN 1818119 A CN1818119 A CN 1818119A CN 200510132461 CN200510132461 CN 200510132461 CN 200510132461 A CN200510132461 A CN 200510132461A CN 1818119 A CN1818119 A CN 1818119A
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- resistant
- wear
- cast steel
- steel
- nickel
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 13
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 12
- 229910001208 Crucible steel Inorganic materials 0.000 title claims description 36
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 25
- 239000011651 chromium Substances 0.000 title claims description 18
- 239000010949 copper Substances 0.000 title claims description 17
- 239000010955 niobium Substances 0.000 title claims description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 15
- 229910052804 chromium Inorganic materials 0.000 title claims description 15
- 229910052758 niobium Inorganic materials 0.000 title claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims description 9
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 239000004615 ingredient Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 24
- 239000010959 steel Substances 0.000 abstract description 24
- 238000005266 casting Methods 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000011572 manganese Substances 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000004584 weight gain Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 238000006388 chemical passivation reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention opened a chrome-nickel-copper-niobium-nitrogen heat-proof and wearing resistance casting steel. The weight percent of the chemical constituent is C 0.3-2.0%, Si<=2.5%, Mn<=2.5%, Cr20.0-46.0%, Ni 8.0-50.0%, Cu 0.05-1.50%, Nb0.04-2.5%, N0.05-0.50%, RE 0.05-0.50%, P<=0.06%, S<=0.04%, the residue is Fe. The vortex motion burner jet made by the steel has the good anti-heat checking character, so it has the long life.
Description
The present invention relates to high temperature resistant and wear-resistant cast steel, particularly high-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen.
In factories such as metallurgy, generating, chemical industry, Che materials many high temperature wear operating modes are arranged, heat power plant boiler is many at present moves under High Temperature High Pressure, and its burner nozzle will be worked under 1000～1300 ℃ high temperature, will bear serious coal dust erosive wear simultaneously.Therefore, the exigent heat-resistant antifriction performance of this spout.The at present domestic steel grades such as 1Cr18Ni9Ti, Cr25Ni20, Cr33Ni9N that adopt are made more.The high temperature wear resistant poor-performing of these steel, particularly spout strain cracking, work-ing life is shorter, can not satisfy the supercritical generating production requirement; Steel Mill's guide plate, former employing Cr35Ni19 cast steel, surface quality is poor, and anti-wrinkling property is poor, influence surface quality of steel, is badly in need of a kind of steel grade replacement of new Nb-Cu complex intensifying.
The purpose of this invention is to provide a kind of high temperature resistant and wear-resistant cast steel, it can be anti-oxidant under 1000～1300 ℃ of C high temperature, cracking resistance, resistance to wear.Be used for making fuel-burning power plant burner nozzle, Steel Mill's guide plate and other member in this temperature range work.
The chemical ingredients of high-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen of the present invention (weight %) is:
C0.3～2.0％ Si≤2.5％ Mn≤2.5％ Cr20.0～46.0％ Ni8.0～50％
Cu0.05～1.5％ Nb0.04～2.5％ N0.05～0.50％ Re0.05～0.50％
P≤0.06％ S≤0.04％
High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen of the present invention selects above-mentioned chemical ingredients to be based on the following consideration:
Carbon (C): improve intensity, the hardness of high temperature resistant and wear-resistant cast steel, and be the principal element of stable austenite.The carbon content height, the intensity of steel and hardness height, austenite structure is stable, but the poor toughness of steel, so carbon content be designed in 0.3～2.0% the scope, different according to manufacturing process with medium, at this range changing.
Chromium (Cr): be the principal element that influences high temperature resistant and wear-resistant cast steel high temperature oxidation resistance and wear resisting property, chromium content is low, influences Cr
2O
3The antioxidant property of the formation of passive film, reduction steel is unfavorable for solution strengthening and second reinforcement mutually again, and then reduces hot strength, hardness and the wear resisting property of steel, the chromium too high levels, increase cost, cracking easily is so chromium content is selected in 20.0～46.0% the scope.According to the medium difference, at this range changing.
Nickel (Ni): be stable austenite matrix and the principal element that improves hot strength.Suitable nickel content can prevent casting deformation and cracking.Nickel content is low excessively, be unfavorable for obtaining stable austenitic matrix, and the intensity of cast steel and hardness also reduces.The nickel too high levels increases cost.So nickel content is selected in 8.0～50.0% the scope, according to the applicating medium difference, changes in this standard.
Copper (Cu): to studies confirm that the material of anti-the metal dusting carries out, in some medium, the oxide skin that forms steady and continuous is to prevent that the required minimum chromium content of Seepage charcoal and metal dusting from being 28%.High chromium content influence is to the stability of phase, so added copper again, Nb-Cu complex intensifying cast steel surface quality is good, and anti-wrinkling property is good, and solidity to corrosion is good, wear resistance, and the coherence of Cu is strengthened and has been improved creep strength.The high temperature resistant and wear-resistant cast steel heat crack resistance that adds Cu is good.This is a national power plant urgent problem.
Niobium (Nb): be to form the carbide element strongly.Mainly strengthen crystal boundary, can significantly improve hot strength, hardness and the wear resisting property of cast steel, but and crystal grain thinning.The content of niobium of cast steel of the present invention is selected in 0.04～2.5% the scope.
Nitrogen (N): be the most effective nickel equivalent, intensive stable austenite matrix forms the charcoal nitride strengthening mutually together with charcoal.Nb (C, N) crystal grain thinning improves the high-temperature resistant water corrosion, and the composite application of Cr, N, Nb forms the CrNbN that a large amount of tiny highly disperseds distribute in this steel, play the precipitation strength effect, and niobium nitride is a Wimet, makes this steel wear-resisting especially.
Rare earth (RE): but add the trace rare-earth element purify hot metal, make oxide film more stable, significantly improve the antioxidant property of cast steel.But, adding too much rare earth element and can produce non-Jin Shu Clip foreign material, the mechanical property of infringement cast steel is so content of rare earth is selected to 0.05～0.5% scope.
Silicon (Si): form fine and close oxide film with the chromium element, help the antioxidant property of cast steel.But silicon easily forms the compound that significantly reduces cast steel intensity, thus silicone content is controlled at≤2.5% scope in.
Manganese (Mn): be the element of stable austenite matrix, and have the solution strengthening effect that suitable manganese content makes oxide film stable.But, the antioxidant property of its infringement cast steel, thus manganese content is controlled at≤2.5% scope in.
Phosphorus (P) and sulphur (S): p and s should reduce its content as much as possible for the harmful element of cast steel of the present invention, and its span of control is respectively P≤0.06%S≤0.04%.
Cast steel of the present invention and the high temperature resistant and wear-resistant steel that uses are at present compared with ZG100Cr35Ni19 cast steel with the metallurgical works guide plate especially for making heat power plant boiler burner nozzle ZG80Cr33Ni9N steel, have the following advantages:
1, added the Nb element in the cast steel of the present invention, refinement crystal grain, when improving intensity, improved toughness again, make its ageing resistance crackle, this plays support function to spout with steel.
2, in the cast steel of the present invention, enough charcoals, nitrogen content are arranged, Nb, N Application of composite have not only improved intensity but also improved the anti intercrystalline corrosion performance.Niobium nitride, charing niobium all are Wimet, so at high temperature wear-resisting, anti-coal dust performance of flushing is good.
3, added copper in this steel, the Application of composite of Nb, Cu has improved the creep-resistant property of steel, thereby heat crack resistance is good.Add copper and also improved wear resisting property.Particularly the Application of composite of Cr, Cu makes this steel improve chrome content becomes possibility, even reaches the level of superelevation chromium (46%), thereby more wear-resisting.
4, Cr content height in the cast steel of the present invention, Mn content low (comparing with steel with the ZG80Cr26Ni4Mn3N spout) has also added silicon unit rope simultaneously, makes Si, Nb Application of composite, has improved the oxide film structure, so cast steel of the present invention has very high antioxidant property.
5, cast steel good combination property of the present invention not only has high hot strength, hardness and antioxidant property, and has high wear resistance at elevated temperature.The hot strength of cast steel of the present invention and antioxidant property all are significantly higher than the Haynes556 alloy.
6, cast steel of the present invention not only can be used for making heat power plant boiler burner nozzle, fluidized bed hood, waved plate blade, but also is used to make high temperature heat-resistant antifriction members such as Steel Mill's guide plate, metallurgy sintered Definition bar, can improve 2～8 times work-ing life.
Further specify high temperature resistant and wear-resistant cast steel of the present invention with embodiment below.
Embodiment:
Chemical ingredients scope according to cast steel of the present invention is prepared burden, and smelts in 150 kilograms of induction furnaces, has refined 5 stove steel altogether, and the chemical ingredients of each stove steel sees Table 1.Comprehensive deoxidation, the thermophilic cast.For 1
#Alloy is measured its every performance, the results are shown in table 2.
Table 1: the chemical ingredients of resistant and wear-resistant cast steel of the present invention (weight %)
| 2 | 0.89 | 1.62 | 0.87 | 0.013 | 0.009 | 30.8 | 15.8 | 0.34 | 0.72 | 0.68 | 0.30 | Surplus |
| 3 | 0.78 | 1.47 | 0.92 | 0.031 | 0.006 | 32.6 | 15.12 | 0.28 | 0.18 | 0.43 | 0.23 | Surplus |
| 4 | 0.91 | 1.36 | 0.83 | 0.016 | 0.007 | 34.2 | 13.7 | 0.25 | 0.29 | 0.48 | 0.28 | Surplus |
| 5 | 0.6 | 1.66 | 0.98 | 0.021 | 0.006 | 31.53 | 8.1 | 0.21 | 0.27 | 0.37 | 0.26 | Surplus |
Table 2: the mechanical behavior under high temperature of resistant and wear-resistant cast steel of the present invention
| Temperature ℃ | σ0.2MPa | σb MPa | δ％ | Ψ％ |
| 1000 | 33.86 | 48.40 | 46.90 | 53.00 |
| 1100 | 63.80 | 79.60 | 56.70 | 59.32 |
| 1200 | 39.30 | 50.00 | 13.33 | 25.26 |
The Haynes556 alloy that contains cobalt 20% is 50Mpa at 1100 ° σ b, and platform gold be the 79.6Mpa:Haynes556 alloy its at 1200 ℃, 400 hours oxidation weight gain is 3.8945 grams.And 400 hours oxidation weight gain of an alloy is 1.7632 grams.The hot strength and the antioxidant property that this shows resistant and wear-resistant cast steel of the present invention all are higher than the Haynes556 alloy, with 1
#Alloy casting heat power plant boiler burner nozzle is in Weihai, actual use proof life-span of Huijiang power plant prolongs greatly, and do not ftracture.Guide plate with this steel is done uses through steel mill, and surface quality is good, and anti-wrinkling property is good, has improved the surface quality of steel, and the life-span has improved more than two times.
Claims (1)
1, a kind of high-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen is characterized in that its chemical ingredients (weight %) is:
C0.3～2.0% Si≤2.5% Mn≤2.5% Cr20.0～46.0% Ni8.0～50.0%Cu0.05～1.50% Nb0.04～2.5% N0.05～0.50% RE0.05～0.5% P≤0.06% S≤0.04% Fe surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101324615A CN100513620C (en) | 2005-12-26 | 2005-12-26 | High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101324615A CN100513620C (en) | 2005-12-26 | 2005-12-26 | High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1818119A true CN1818119A (en) | 2006-08-16 |
| CN100513620C CN100513620C (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101324615A Expired - Fee Related CN100513620C (en) | 2005-12-26 | 2005-12-26 | High-temperature heat-resistant and wear-resistant cast steel with chromium, nickel, copper, niobium and nitrogen |
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| CN (1) | CN100513620C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159744A (en) * | 2009-06-24 | 2011-08-17 | 日立金属株式会社 | Heat-resistant steel for engine valve having excellent high-temperature strength |
| CN106609334A (en) * | 2017-03-16 | 2017-05-03 | 石家庄铁道大学 | Ultra-high chromium cast iron and preparation method |
| CN107099753A (en) * | 2017-04-13 | 2017-08-29 | 山东远大锅炉配件制造有限公司 | Blast cap of circulating fluidized bed boiler rare-earth and high chromium nickel tungsten multicomponent alloy heat resisting steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938106B (en) * | 2013-01-21 | 2016-03-30 | 学修机械科技(上海)有限公司 | Chromium ambrose alloy vanadium niobium nitrogen high temperature resistant and wear-resistant cast steel |
-
2005
- 2005-12-26 CN CNB2005101324615A patent/CN100513620C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159744A (en) * | 2009-06-24 | 2011-08-17 | 日立金属株式会社 | Heat-resistant steel for engine valve having excellent high-temperature strength |
| CN102159744B (en) * | 2009-06-24 | 2013-05-29 | 日立金属株式会社 | Heat-resistant steel for engine valve having excellent high-temperature strength |
| CN106609334A (en) * | 2017-03-16 | 2017-05-03 | 石家庄铁道大学 | Ultra-high chromium cast iron and preparation method |
| CN106609334B (en) * | 2017-03-16 | 2018-05-08 | 石家庄铁道大学 | A kind of superelevation chrome cast iron and preparation method thereof |
| CN107099753A (en) * | 2017-04-13 | 2017-08-29 | 山东远大锅炉配件制造有限公司 | Blast cap of circulating fluidized bed boiler rare-earth and high chromium nickel tungsten multicomponent alloy heat resisting steel |
| CN107099753B (en) * | 2017-04-13 | 2020-02-04 | 山东远大锅炉配件制造有限公司 | Rare earth high-chromium nickel tungsten multi-element alloy heat-resistant steel for circulating fluidized bed boiler hood |
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| Publication number | Publication date |
|---|---|
| CN100513620C (en) | 2009-07-15 |
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Owner name: XUEXIU MACHINERY TECHNOLOGY (SHANGHAI) CO., LTD. Free format text: FORMER OWNER: LI DONGGE Effective date: 20140929 |
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Effective date of registration: 20140929 Address after: 200127 Shanghai maoxing Road No. 86 22F Patentee after: Shanghai Xuexiu Machine Technology Co.,Ltd. Address before: 200127 Shanghai maoxing Pu Dong Qu Road No. 88, block 22F Patentee before: Li Dongge |
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Effective date of registration: 20201217 Address after: No.58-4 nanhu road, Chaoyang District, Changchun City, Jilin Province 130000 Patentee after: Li Dongge Address before: 22F, 86 maoxing Road, Shanghai 200127 Patentee before: Shanghai Xuexiu Machine Technology Co.,Ltd. |
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