CN1093758A - Cast 1300-1350 ℃ of iron-based high temperature steel and founding - Google Patents
Cast 1300-1350 ℃ of iron-based high temperature steel and founding Download PDFInfo
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- CN1093758A CN1093758A CN 93110389 CN93110389A CN1093758A CN 1093758 A CN1093758 A CN 1093758A CN 93110389 CN93110389 CN 93110389 CN 93110389 A CN93110389 A CN 93110389A CN 1093758 A CN1093758 A CN 1093758A
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Abstract
1300-1350 ℃ of iron-based high temperature steel of casting of the present invention and founding, relate to a kind of not nickeliferous casting iron-base high-temperature refractory steel, by Cr, Al, the C equal size of adjusting this steel, carry out alloying, and reinforcement refining, make the mechanical property under its acquisition advantages of good casting and the as cast condition, and have weldability.The chemical ingredients of this steel (wt%): Cr20.00-28.00, C0.01-0.15, Al3.00-8.00, Ti0.20-1.50, Mo0.30-1.50, V0.20-1.20, Y0.00-0.50, Si0.20-1.50, Mn0.20-0.80, P≤0.03, S≤0.03, Yu Weitie and impurity.This steel grade can descend anti-oxidant, impervious carbon, resistant to sulfide tarnishing at 1300-1350 ℃, and has higher high temperature strength.
Description
The invention relates to a kind of casting iron-base chromium aluminium high-temperature refractory steel, particularly about a kind of not nickeliferous casting iron-base chromium aluminium high-temperature refractory steel.
Controllability atmosphere heat treatment stove stove radiator tube, working temperature generally in 1000-1300 ℃ of scope, is being born high temperature oxidation, sulphur atmosphere corrosion etc. usually.Use Cr20Ni80, Cr18Ni75Si at present both at home and abroad always
2, austenitic steels such as Cr15Ni35, Cr25Ni20Si2, Cr23Ni18, Cr18Ni12MoTi make pairs and penetrate pipe.These steel high-temperature anti-carburizations, property resistant to sulfide tarnishing are poor, and its maximum operation (service) temperature all is no more than 1200 ℃, and distortion is often arranged in the use, has influenced the use properties and the life-span of radiator tube, has limited the use range of stove.Alloy is because of the ni content height, and cost is high too.
At present, the electricity generation boiler of High Temperature High Pressure operation, high temperature section when operation the nozzles temperature often up to 1300 ℃, nozzles work-ing life of the now external normal materials such as Cr20Ni14Si2, Cr25Ni20 that adopt is only in 2 months, promptly adopt the also difficult adaptation of latest domestic achievement " 1200 ℃ of high temperature steel of rare-earth and high chromium nickel nitrogen ", one meets blowing-out often causes distortion.Present existing ferrite siderochrome aluminium electric heating steel, though can be anti-oxidant under 1400 ℃, alloy purity requirement height needs to adopt vacuum melting or electroslag melting, and still can not be used for casting, just is used for nichrome wire at present.
The objective of the invention is to develop a kind of not nickeliferous siderochrome aluminium high-temperature refractory steel novel, that can be used for Foundry Production.Cr, Al, C equal size by adjusting this steel, carry out alloying, strengthen refining, make the machining property under its acquisition advantages of good casting and the as cast condition, and have weldability, can descend anti-oxidant, impervious carbon, resistant to sulfide tarnishing at 1300-1350 ℃, and have higher high temperature strength.Casting iron-base high temperature steel of the present invention is:
Chemical ingredients (wt-%)
Cr 20.00-28.00、C 0.01-0.15、Al 3.00-8.00、
Ti 0.20-1.50、Mo 0.30-1.50、V 0.20-1.20、
Si 0.20-1.50、Mn 0.20-0.80、Y 0.00-0.50、
P≤0.03, S≤0.03, Yu Weitie and impurity.
Steel grade of the present invention can utilize conventional industrial production furnace charge with common intermediate frequency, line frequency furnace melting, adopts general castmethod to produce.Take rational order of addition(of ingredients) and appropriate refining deterioration agent to carry out refining in the fusion process, obtain as cast condition most important element anti-oxidant and resistant to sulfide tarnishing more than 1250 ℃ with rotten.The control of C amount is to cooperate under the prerequisite that guarantees high-temperature oxidation resistance with proper C r, Al content, improves the anti-carburizing of steel, improves castability.The adding of Mo, Ti, V, Y etc. is for refined cast structure, improves hot strength, slows down the high temperature grain growth, improves the tack of oxide film and matrix, suitably improves the castability of alloy.Refining deterioration agent and refining operation technology thereof are refined cast structures, improve casting manufacturability, improve the key of alloy high-temp intensity.
Crucial melting technology:
Diffusive deoxidation and refinement and denaturation carry out simultaneously, [its chemical constitution is (wt-%): CaO 55.00-65.00 with the slag making refining deterioration agent powder of drying mixing after metal chargeization is clear, NaCl 30.00-45.00, KCl 5.00-25.00] even topped 5-8 mm thick on metal bath surface, evenly be sprinkled into the rare earth silicon-calcium alloy diffusion reductor (granularity is the 3-6 millimeter) of the heavy 0.50%-0.80% of molten metal more thereon, and then the slag making refining deterioration agent of even thereon topped 5-8 mm thick, diffusive deoxidation finishes to skim and afterwards adds ferrotianium, the rare earth yttrium adds packet header 1# rare earth ferrosilicon alloy (0.30-0.80Wt-%) when coming out of the stove.
Best proportioning of the present invention is: (Wt-%)
Cr 20.00-26.00、C 0.05-0.08、Al 4.00-6.00、
Ti 0.20-0.90、Mo 0.30-0.70、V 0.30-0.90、
Y 0.03-0.10、Si 0.40-1.00、Mn 0.40-0.70、
P≤0.03, S≤0.03, Yu Weitie and impurity.
The present invention is applicable to the heat-resistant component that is operated in 1300-1350 ℃ and is lower than this temperature, and characteristics anti-oxidant under the high temperature, resistant to sulfide tarnishing, impervious carbon are arranged, can be used for controllability atmosphere furnace radiator tube, high-temperature heater drop-bottom, heat power plant boiler high temperature nozzles etc.
Embodiment:
1. implement the composition performance and see attached list 1, wherein press the luxuriant good fortune stove of sequence number 3 making high temperature drop-bottom in the table 1, used 3500 hours continuously down at 1300 ℃, surface film oxide is complete not to be peeled off, wherein Ceng Sanci operation under 1370 ℃ in each 50 hours.
2. on probation with the 2 trial-production φ of composition in the table 1,150 * 800 electrothermal radiation tube shove charges, moved 6 months, the Cr25Ni20Si2 steel plate helical coil welded tube of installing with stove has changed 2 times, and trials is still excellent.
Claims (3)
1, casts siderochrome aluminium high temperature steel and founding thereof, it is characterized in that its chemical constitution and refinement and denaturation technology and refining deterioration agent.
Its chemical constitution is (wt-%):
Cr20.00-28.00、C0.01-0.15、Al3.00-8.00、Ti0.20-1.50、
Be iron and impurity surplus Mo0.30-1.50, V0.20-1.20, Y0.00-0.50, Si0.20-1.50, Mn0.20-0.80, P≤0.03, S≤0.03.
Its refinery practice is: carry out simultaneously with rotten in the refining of diffusive deoxidation phase.To dry even the carrying out of saturating powdery refining deterioration agent after metal chargeization is clear and be placed on liquid level 5-8 mm thick, evenly being sprinkled into granularity more thereon is the rare earth silicon-calcium alloy reductor 0.5-0.8 (wt-%) of 3-6 millimeter, the refining deterioration agent of even more topped 5-8 mm thick.Add ferrotianium, rare earth yttrium after refining is over and skims, add packet header 1# rare earth ferrosilicon alloy 0.30-0.80 (wt-%) when coming out of the stove.
Refining deterioration agent is: oven dry is dried by the fire saturating lime powder, is removed the mixed uniformly powders such as industrial NaCl, KCl of crystal water.
2,, it is characterized in that its optimum chemical consists of (wt-%) according to the said casting siderochrome of claim 1 aluminium high-temperature refractory steel:
Cr20.00-26.00, C0.05-0.08, Al4.00-6.00, Ti0.20-0.90, Mo0.30-0.70, V0.30-0.95, Y0.01-0.15, Si0.40-1.00, Mn0.40-0.70, P≤0.03, S≤0.03, Yu Weitie and impurity.
3,, it is characterized in that the chemical constitution of its refining deterioration agent is (wt-%) according to the said casting siderochrome of claim 1 aluminium high-temperature refractory steel
CaO 55.00-65.00 NaCl 30.00-45.00 KCl 5.00-25.00
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110389 CN1093758A (en) | 1993-04-16 | 1993-04-16 | Cast 1300-1350 ℃ of iron-based high temperature steel and founding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110389 CN1093758A (en) | 1993-04-16 | 1993-04-16 | Cast 1300-1350 ℃ of iron-based high temperature steel and founding |
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| Publication Number | Publication Date |
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| CN1093758A true CN1093758A (en) | 1994-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93110389 Pending CN1093758A (en) | 1993-04-16 | 1993-04-16 | Cast 1300-1350 ℃ of iron-based high temperature steel and founding |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091167C (en) * | 2000-08-29 | 2002-09-18 | 宝山钢铁股份有限公司 | High-Cr cast steel grate and its manufacture method |
| CN1333098C (en) * | 2005-06-24 | 2007-08-22 | 寇生瑞 | Iron base rare earth high chromium steel impellor blade |
| CN104561799A (en) * | 2013-10-28 | 2015-04-29 | 丹阳智盛合金有限公司 | Iron-chromium-aluminum alloy machining process |
| CN104831174A (en) * | 2015-05-08 | 2015-08-12 | 上海蓝铸特种合金材料有限公司 | High-temperature oxidation resistant metal material and preparation method thereof |
| US9117969B2 (en) | 2008-08-13 | 2015-08-25 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Thermoelectric device, thermoelectric apparatus having a multiplicity of thermoelectric devices and motor vehicle having a thermoelectric apparatus |
| CN109022735A (en) * | 2018-09-29 | 2018-12-18 | 武汉钢铁有限公司 | A kind of high temperature resistance and high strength drop-bottom stainless steel plate and production method |
| CN109072369A (en) * | 2016-04-22 | 2018-12-21 | 山特维克知识产权股份有限公司 | The method of pipe and manufacture pipe |
| CN109402342A (en) * | 2018-12-25 | 2019-03-01 | 江苏兄弟合金有限公司 | A kind of electrothermal alloy and preparation method thereof |
| CN109536834A (en) * | 2018-12-07 | 2019-03-29 | 安徽金月节能科技有限公司 | A kind of heating watt high heat-intensity lectrothermal alloy wire and preparation method thereof |
| CN110938781A (en) * | 2019-10-30 | 2020-03-31 | 武汉科技大学 | Low-cost high-aluminum heat-resistant steel and preparation method thereof |
| CN113621897A (en) * | 2020-05-08 | 2021-11-09 | 宝山钢铁股份有限公司 | Rare earth-containing heat-resistant alloy steel and slab continuous casting process thereof |
-
1993
- 1993-04-16 CN CN 93110389 patent/CN1093758A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091167C (en) * | 2000-08-29 | 2002-09-18 | 宝山钢铁股份有限公司 | High-Cr cast steel grate and its manufacture method |
| CN1333098C (en) * | 2005-06-24 | 2007-08-22 | 寇生瑞 | Iron base rare earth high chromium steel impellor blade |
| US9117969B2 (en) | 2008-08-13 | 2015-08-25 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Thermoelectric device, thermoelectric apparatus having a multiplicity of thermoelectric devices and motor vehicle having a thermoelectric apparatus |
| CN104561799A (en) * | 2013-10-28 | 2015-04-29 | 丹阳智盛合金有限公司 | Iron-chromium-aluminum alloy machining process |
| CN104831174A (en) * | 2015-05-08 | 2015-08-12 | 上海蓝铸特种合金材料有限公司 | High-temperature oxidation resistant metal material and preparation method thereof |
| CN109072369A (en) * | 2016-04-22 | 2018-12-21 | 山特维克知识产权股份有限公司 | The method of pipe and manufacture pipe |
| US11446722B2 (en) | 2016-04-22 | 2022-09-20 | Sandvik Intellectual Property Ab | Tube and a method of manufacturing a tube |
| US11602780B2 (en) | 2016-04-22 | 2023-03-14 | Sandvik Intellectual Property Ab | Tube and a method of manufacturing a tube |
| CN109022735A (en) * | 2018-09-29 | 2018-12-18 | 武汉钢铁有限公司 | A kind of high temperature resistance and high strength drop-bottom stainless steel plate and production method |
| CN109536834A (en) * | 2018-12-07 | 2019-03-29 | 安徽金月节能科技有限公司 | A kind of heating watt high heat-intensity lectrothermal alloy wire and preparation method thereof |
| CN109402342A (en) * | 2018-12-25 | 2019-03-01 | 江苏兄弟合金有限公司 | A kind of electrothermal alloy and preparation method thereof |
| CN110938781A (en) * | 2019-10-30 | 2020-03-31 | 武汉科技大学 | Low-cost high-aluminum heat-resistant steel and preparation method thereof |
| CN110938781B (en) * | 2019-10-30 | 2021-02-19 | 武汉科技大学 | Low-cost high-aluminum heat-resistant steel and preparation method thereof |
| CN113621897A (en) * | 2020-05-08 | 2021-11-09 | 宝山钢铁股份有限公司 | Rare earth-containing heat-resistant alloy steel and slab continuous casting process thereof |
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