CN105420621A - Austenitic stainless steel used for anti-high-temperature furnace pipe and manufacturing process for plate blank thereof - Google Patents
Austenitic stainless steel used for anti-high-temperature furnace pipe and manufacturing process for plate blank thereof Download PDFInfo
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Abstract
The invention relates to austenitic stainless steel used for an anti-high-temperature furnace pipe and a manufacturing process for a plate blank thereof. The anti-high-temperature creep performance and the anti-oxygenic performance can be improved, and moreover, by means of the manufacturing process, the cost and the energy consumption are reduced. The austenitic stainless steel comprises, by weight, 24-26% of Cr, 19-21% of Ni, 0.3-0.8% of Si, 0.02-0.06% of C, 1.0-1.5% of Mn, 1.5-2.5% of W, 0-0.2% of N, 0-0.4% of P, 0-0.03% of S, and the balance Fe. The tapping content of a mother solution smelted by a Consteel electric furnace comprises more than 1.0% of C, less than 1.0% of Si, less than or equal to 2% of Cr, 25-35% of Ni, less than 0.01% of P and 3-5% of W; the tapping temperature is controlled between 1580-1630 DEG C; molten steel of the Consteel electric furnace and molten steel of an intermediate frequency furnace are smelted through argon oxygen decarburization after being blended; after smelting, the tapping temperature is controlled between 1550-1630 DEG C; then, the molten steel is blended into a low frequency furnace (LF) for refining, and microalloy elements are added, and the temperature of an LF furnace bull ladle is controlled between 1500-1520 DEG C; molten stainless steel is continuously cast into the plate blank with thickness being 160-220 mm through a continuous casting machine.
Description
Technical field
The present invention relates to the manufacture craft of a kind of high temperature resistant flue austenitic stainless steel and slab thereof.
Background technology
Consteel electric steelmaking process is a kind of new Electric Furnace Steelmaking carried out the nineties in 20th century, this electric furnace has continuous charging, continuously pre-heating, continuous melting, the feature of melting continuously, it is short that it has smelting cycle, smelting energy consumption is low, noise is little, the advantages such as cost of investment is low, a kind of electrosmelting modern technique with stronger vitality and competitive power in field of steel-making, but adopt Consteel electrosmelting high temperature resistant flue austenitic stainless steel this nickelic, high chromium and tungstenic mother liquor of stainless steel are also beyond example, the present invention can not only adopt Consteel electrosmelting high temperature resistant flue austenitic stainless steel mother liquor by adjusting process parameter, and can power consumption be reduced, shorten smelting cycle, [P] content can drop to less than 0.01% simultaneously, greatly improve economic benefit.
Austenite series stainless steel is that Fe-Cr-Ni series or Fe-Cr-Mn are serial.All there is stable excellent mechanical property from low temperature to high temperature.Carry out solutionizing thermal treatment ametaboly point 920 ~ 1150 DEG C of temperature, rely on cooling fast to become the nonmagnetic austenite structure with excellent corrosion resistance nature.Austenite series stainless steel compared with martensite, ferrite series stainless steel, because of be rich in extensibility and yield ratio (yield strength/tensile strength) little etc., so its processibility is very superior.But its work hardening is large.Recently, utilize processing temperature dexterously, by the ultra-deep drawing that can not carry out in the past in the drop-down plutonic merit of the situation of certain temperature.
Austenite heat-resistance stainless steel is applied widely in boiler and flue, as steam boiler, the steam turbine industrial furnace and jet engine etc. of thermal power generation.They all at high temperature work, and bear various load, and they also contact with high-temperature steam, High Temperature Gas in addition, and surface easily high temperature oxidation occurs.310/310S is chromium nickle type austenitic stainless steel, owing to the addition of the chromium nickel of the more high-content than 304, at high temperature can the generation of effective control oxide, and make it have better high-temperature oxidation resistance and creep strength at higher temperature.The maximum operating temperature of 310S can reach 1200 DEG C, can at 1100 DEG C continuous firing, usually use in the hot environment below 1100 DEG C, but duration of service is short in hot environment, neoteric a kind of high temperature resistant flue austenitic stainless steel has higher high temperature endurance performance and pyro-oxidation resistance.
Hot properties: more than 500 DEG C, the intensity of other steel grades can sharply decline, and austenite series stainless steel still has higher intensity.Particularly because it has good scale resistance, so be applicable to various worst hot case.Because austenite series stainless steel is face-centered cubic lattice, significantly more superior than the hot strength of ferrite series stainless steel more than 600 DEG C of body centered structure.
Cold property: ordinary steel (ferritic steel) is a kind of high-strength material, but in low temperature, because its intensity and toughness all weaken, and be restricted in use.Martensite is serial, ferrite is serial and austenite series stainless steel, characteristic superior is separately possessed respectively in normal temperature and hot environment, but in low temperature environment, martensite series stainless steel and ferrite series stainless steel, the same with ordinary steel, low-temperature performance is not good, and austenite series stainless steel, be widely used because possessing excellent cold property.
300 series austenitic stainless steels (as 304,316,317 etc.) are widely used in the fields such as oil, chemical industry, aerospace and the energy owing to all having good plasticity and toughness, cold and hot working performance and resistance to local corrosion performance under high temperature and extremely low temperature.Along with existingizationization development, many working condition requirements at high temperature have the special steel of higher-strength and good chemical, and typical high temperature resistant stainless steel is as 06Cr25Ni20(310S) be improve stainless high temperature oxidation resistance by improving Cr, Ni content simultaneously and grow up.
At present, stainless steel enterprises at home headed by Taiyuan Iron and Steel Co. and Baosteel is production development 310S heat-resistance stainless steel all, to use in annealing furnace equipment, but the defect that 310S mainly exists is that work-ing life is short, for this situation, by design and the experimental study of reasonable science, the special austenitic stainless steel strand be used exclusively in high temperature flue can be outputed.The present invention, by improving the content of chromium, nickel, reasonably adds tungstenalloy metallic element, and strictly controls other alloying element contents, can make its material can life-time service in high temperature flue, save Master Cost for downstream client and increase economic efficiency.By novelty assessment report, have not been reported for the paper of the special austenitic stainless steel technical elements of high temperature resistant flue and patent, and manufacture craft and this patent require also there is basic difference.
As the preparation method of a patent CN102373379A resistance to chemical attack Martensite Stainless Steel, it counts by weight percentage, and ingredient is as follows: C:0.002-0.01%; Si:0.15-0.45%; Mn:0.3-1.5%; P :≤0.02%; S :≤0.005%; Cr:16-17.8%; Ni:2.5-5.0%; V:0.03%-0.15%; Mo:1.5-0.30%; O≤0.005%.This stainless steel has high temperature resistant and wear-resisting advantage, but does not reach the service requirements of high temperature flue.
Patent CN102260826A high temperature resistant Martensite Stainless Steel and manufacture method thereof, it counts by weight percentage, and ingredient is as follows: C:0.11-0.15%; Si :≤0.1%; Mn:0.5-0.8%; P :≤0.01%; S :≤0.005%; Cr:9.8-11.5%; Ni:0.6-0.8%; V:0.13%-0.23%; Al≤0.01%; Nb:0.09-0.15%; W:0.25-0.4%; N:0.05-0.08%; Mo:1.00-1.30%; O≤0.005%.This stainless steel has high temperature resistant and low temperature intensity advantages of higher, but does not reach high temperature resistant creep and the resistance to oxidation service requirements of high temperature flue.
Stainless steel of a patent CN101845600A corrosion-and high-temp-resistant and preparation method thereof, it counts by weight percentage, and ingredient is as follows: C:0.01-0.04%; Si:2.0-9.0%; Mn:0.5-1.0%; P:0.001-0.03%; S:0.001-0.03%; Cr:18-35%; Ni:25-45%; W:0.25-0.4%; Mo:2.0-5.0%; Cu:1.0-4.0%; Trace element 0.2-0.5%.This stainless steel has the advantages such as high temperature resistant and resistance to oxidation, but formula still haves much room for improvement.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and the manufacture craft of a kind of high temperature resistant flue austenitic stainless steel and slab thereof is provided, high temperature resistant creep property more better than 310S heat-resistance stainless steel and antioxidant property can be improved, simultaneously manufacture craft cost-saving, reduce energy consumption, while increasing economic efficiency, environmental protection.
The present invention's adopted technical scheme that solves the problem is: a kind of high temperature resistant flue austenitic stainless steel, it is characterized in that: the component containing following weight percent: Cr:24-26%, Ni:19-21%, Si:0.3-0.8%, C:0.02-0.06%, Mn:1.0-1.5%, W:1.5-2.5%, N≤0.2%, P≤0.04%, S≤0.03%, surplus is Fe; Chromium nickel equivalent ratio controls between 0.9-1.1.
Cr content of the present invention is: 24%≤Cr≤25%.
Ni content of the present invention is: 20%≤Ni≤21%.
C content of the present invention is: 0.02≤C≤0.03%.
Si content of the present invention is: 0.3%≤Si≤0.60%.
Mn content of the present invention is: 1.0%≤Mn≤1.3%.
W content of the present invention is: 1.5%≤W≤2.0%.
N content of the present invention is: N≤0.1%.
P≤0.02% of the present invention, S≤0.001%.
A manufacture craft for high temperature resistant flue austenite stainless steel plate base, is characterized in that: step is as follows:
(1), adopt Consteel electrosmelting high temperature flue austenitic stainless steel mother liquor, mother liquor goes out composition of steel and is: C > 1.0%; Si < 1.0%; Cr≤2%; Ni:25 ~ 35%; W:3-5%; P < 0.01%, tapping temperature controls at 1580 ~ 1630 DEG C;
(2), Consteel electric furnace and intermediate frequency furnace molten steel are blended into AOD smelting after blending, after AOD smelts, tapping temperature controls between 1550 ~ 1630 DEG C, then molten steel is blended into LF stove carry out refining and add microalloy element, the qualified rear bull ladle of composition, temperature is to continuous casting platform, LF bull ladle temperature controls between 1500 ~ 1520 DEG C, then by continuous caster, this high temperature resistant flue austenite stainless molten steel continuous casting is become the slab of thickness 160 ~ 220mm; After shaping, the material of slab is the high temperature resistant flue austenitic stainless steel described in the arbitrary claim of claim 1-9.
Cr ferrite former, improve the erosion resistance of material, carry heavy alloyed intensity and pyro-oxidation resistance, the content of suitable control Cr element is conducive to controlling chromium nickel equivalent ratio, and then be conducive to the hot-workability controlling this duplex stainless steel, in the present invention, the content of chromium controls, at 24%≤Cr≤26%, preferentially to select 24%≤Cr≤25%.
Ni is austenite former, austenite can be reduced range extension to cold zone by nickel, nickel can improve toughness and ductility, make it to be convenient to processing, to manufacture and welding, strengthen antiacid corrosion, keep the ability of passive film and the resistance to corrosion in corrosive medium, as preferentially selecting 20%≤nickel≤21%.
C is austenite former, replaces nickel to a certain extent, promotes austenite and stable austenite, when carbon content is too high, with chromium Chromium Carbide Formation, stainless erosion resistance and toughness deteriorate, in order to ensure stainless erosion resistance, general control, below 0.06%, preferably selects≤0.03%.
Si is ferrite former and plays to stablize ferritic effect, also plays deoxidation additive, improves welding mobility, has the trend of increase mesophase spherule precipitation and reduces N concentration, preferentially select 0.3%≤Si≤0.60% when silicone content is too high.
Mn is the effect of austenite former and stable austenite, nickel can be replaced to a certain extent, obtain austenite structure, improve nitrogen solid solubility simultaneously, and then improve the content of nitrogen, the corrosion-resistant shape of too high manganese to material is unfavorable, and promotes the formation of metallographic phase, affects impelling strength and corrosion resistance nature.Fe content preferentially selects 1.0%≤Mn≤1.3%.
W is ferrite former, and can improve hot strength and high temperature resistant creep property, but too much adds the precipitation that membership causes brittlement phase, as preferred 1.5%≤W≤2.0%
N is stable austenite element, improves the erosion resistance of steel, improves the intensity of steel.Improve the welding property of material, but cross the hot-workability that high nitrogen-containing reduces material, too low nitrogen content can reduce again the content of chromium, unfavorable to the corrosion resistance nature of material, preferentially controls at nitrogen≤0.1%.
P is harmful element, is segregated in crystal boundary or phase boundary, to the erosion resistance of material and hot workability unfavorable, preferably control below 0.02%.
S is harmful element, and easy and manganese forms the hot workability that manganese sulfide reduces material, and calcium forms calcium sulfide, and be harmful to corrosion resistance, priority acccess control is below 0.001%.
The present invention compared with prior art, has the following advantages and effect: steel grade of the present invention can improve high temperature resistant creep property more better than 310S heat-resistance stainless steel and antioxidant property, can more than 1000 DEG C duration of service longer; Simultaneously adopt present invention process produce this steel grade slab can cost-saving, reduce energy consumption, while increasing economic efficiency, environmental protection.
Embodiment
Below by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
One, a high temperature resistant flue austenitic stainless steel, it contains the component of following weight percent: Cr:24-26%, Ni:19-21%, Si:0.3-0.8%, C:0.02-0.06%, Mn:1.0-1.5%, W:1.5-2.5%, N≤0.2%, P≤0.04%, S≤0.03%, surplus is Fe; Chromium nickel equivalent ratio controls between 0.9-1.1.
Table 1: 10 embodiments of each weight percentages of components of flue austenitic stainless steel that the present invention is high temperature resistant.
Two, a manufacture craft for high temperature resistant flue austenite stainless steel plate base, step is as follows:
(1), adopt Consteel electrosmelting high temperature flue austenitic stainless steel mother liquor, mother liquor goes out composition of steel and is: C > 1.0%; Si < 1.0%; Cr≤2%; Ni:25 ~ 35%; W:3-5%; P < 0.01%, tapping temperature controls at 1580 ~ 1630 DEG C;
(2), Consteel electric furnace and intermediate frequency furnace molten steel are blended into AOD smelting after blending, after AOD smelts, tapping temperature controls between 1550 ~ 1630 DEG C, then molten steel is blended into LF stove carry out refining and add microalloy element, the qualified rear bull ladle of composition, temperature is to continuous casting platform, LF bull ladle temperature controls between 1500 ~ 1520 DEG C, then by continuous caster, this high temperature resistant flue austenite stainless molten steel continuous casting is become the slab of thickness 160 ~ 220mm; After shaping, the material of slab is above-mentioned high temperature resistant flue austenitic stainless steel, and it contains the component of following weight percent: Cr:24-26%, Ni:19-21%, Si:0.3-0.8%, C:0.02-0.06%, Mn:1.0-1.5%, W:1.5-2.5%, N≤0.2%, P≤0.04%, S≤0.03%, surplus is Fe; Chromium nickel equivalent ratio controls between 0.9-1.1.
In step (1), it is C:1.9%, Si:0.3%, P:0.005%, Cr:1.25%, W:4.1, Ni:30% that mother liquor goes out composition of steel.
Tapping temperature is the one in 1600 DEG C, 1595 DEG C, 1610 DEG C, 1620 DEG C.
In step (2), after AOD smelts, tapping temperature controls the one in 1560 DEG C, 1570 DEG C, 1580 DEG C, 1590 DEG C, 1595 DEG C, 1600 DEG C, 1610 DEG C, 1620 DEG C.
LF bull ladle temperature controls the one in 1505 DEG C, 1510 DEG C, 1515 DEG C.
Slab thickness is 198mm.
The high temperature resistant flue austenitic stainless steel as mat material being contains the component of following weight percent: C:0.025%, Cr:24.5%, Si:0.45%, Ni:20.1%, Mn:1.55%, W:2.01, N:0.08%, P:0.018%, S:0.0005%.
According to Consteel electric furnace, there is continuous charging, continuously pre-heating, continuous melting, the feature of melting continuously, it is short that it has smelting cycle, smelting energy consumption is low, noise is little, the advantages such as cost of investment is low, and be a kind of electrosmelting modern technique with stronger vitality and competitive power in field of steel-making, but adopt Consteel electrosmelting high temperature resistant flue austenitic stainless steel this nickelic, high chromium and tungstenic mother liquor of stainless steel are also beyond example, and smelt this nickelic, when high chromium and tungstenic mother liquor of stainless steel, phosphorus content to be controlled below 0.01 still suitable difficulty.
According to the metallurgical characteristics of Consteel, the present invention can not only adopt Consteel electrosmelting high temperature resistant flue austenitic stainless steel mother liquor by adjusting process parameter, and can power consumption be reduced, shorten smelting cycle, phosphorus content controls below 0.01%, so operational path of the present invention is: adopt Consteel smelting mother liquor of stainless steel from electric furnace, then blend to AOD furnace with the mother liquor of stainless steel of intermediate frequency, decarburization is carried out by control AOD, desulfurization, composition adjustment, to add and temperature controls carrying out microalloy composition adjustment and microalloy to LF stove, after qualified, hang ladle carry out slab production to continuous casting.Namely manufacture craft is: (Consteel+ intermediate frequency furnace) → AOD → LF → continuous casting.
In addition, it should be noted that, the specific embodiment described in this specification sheets, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this specification sheets is only to structure example of the present invention explanation.
Claims (10)
1. a high temperature resistant flue austenitic stainless steel, is characterized in that: the component containing following weight percent: Cr:24-26%, Ni:19-21%, Si:0.3-0.8%, C:0.02-0.06%, Mn:1.0-1.5%, W:1.5-2.5%, N≤0.2%, P≤0.04%, S≤0.03%, surplus is Fe; Chromium nickel equivalent ratio controls between 0.9-1.1.
2. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described Cr content is: 24%≤Cr≤25%.
3. high temperature resistant flue austenitic stainless steel according to claim 1 and 2, is characterized in that: described Ni content is: 20%≤Ni≤21%.
4. the high temperature resistant flue austenitic stainless steel according to claim 1 or 3, is characterized in that: described C content is: 0.02≤C≤0.03%.
5. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described Si content is: 0.3%≤Si≤0.60%.
6. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described Mn content is: 1.0%≤Mn≤1.3%.
7. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described W content is: 1.5%≤W≤2.0%.
8. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described N content is: N≤0.1%.
9. high temperature resistant flue austenitic stainless steel according to claim 1, is characterized in that: described P≤0.02%, S≤0.001%.
10. a manufacture craft for high temperature resistant flue austenite stainless steel plate base, is characterized in that: step is as follows:
(1), adopt Consteel electrosmelting high temperature flue austenitic stainless steel mother liquor, mother liquor goes out composition of steel and is: C > 1.0%; Si < 1.0%; Cr≤2%; Ni:25 ~ 35%; W:3-5%; P < 0.01%, tapping temperature controls at 1580 ~ 1630 DEG C;
(2), Consteel electric furnace and intermediate frequency furnace molten steel are blended into AOD smelting after blending, after AOD smelts, tapping temperature controls between 1550 ~ 1630 DEG C, then molten steel is blended into LF stove carry out refining and add microalloy element, the qualified rear bull ladle of composition, temperature is to continuous casting platform, and LF bull ladle temperature controls between 1500 ~ 1520 DEG C; Then by continuous caster, this high temperature resistant flue austenite stainless molten steel continuous casting is become the slab of thickness 160 ~ 220mm; After shaping, the material of slab is the high temperature resistant flue austenitic stainless steel described in the arbitrary claim of claim 1-9.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510986362.7A CN105420621A (en) | 2015-12-25 | 2015-12-25 | Austenitic stainless steel used for anti-high-temperature furnace pipe and manufacturing process for plate blank thereof |
| CN201610354857.2A CN105803318A (en) | 2015-12-25 | 2016-05-26 | High-temperature-resistant austenitic stainless steel for furnace pipe |
| CN201610354858.7A CN106011680A (en) | 2015-12-25 | 2016-05-26 | Production process of austenitic stainless steel slab used for high temperature resistant furnace hearth |
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| CN201510986362.7A CN105420621A (en) | 2015-12-25 | 2015-12-25 | Austenitic stainless steel used for anti-high-temperature furnace pipe and manufacturing process for plate blank thereof |
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| CN201610354858.7A Pending CN106011680A (en) | 2015-12-25 | 2016-05-26 | Production process of austenitic stainless steel slab used for high temperature resistant furnace hearth |
| CN201610354857.2A Pending CN105803318A (en) | 2015-12-25 | 2016-05-26 | High-temperature-resistant austenitic stainless steel for furnace pipe |
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| CN201610354857.2A Pending CN105803318A (en) | 2015-12-25 | 2016-05-26 | High-temperature-resistant austenitic stainless steel for furnace pipe |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5877555A (en) * | 1981-11-04 | 1983-05-10 | Nippon Yakin Kogyo Co Ltd | Austenitic stainless steel with superior pitting corrosion resistance and weather resistance |
| KR100605678B1 (en) * | 1999-11-08 | 2006-07-31 | 주식회사 포스코 | A heat resistant stainless steel having good heat resistant strength |
| CN101914715B (en) * | 2010-08-31 | 2012-06-06 | 振石集团东方特钢股份有限公司 | Method for smelting stainless steel mother liquor |
| CN102226246B (en) * | 2011-06-16 | 2012-10-17 | 振石集团东方特钢股份有限公司 | Smelting method of stainless steel mother liquor |
| WO2013001956A1 (en) * | 2011-06-28 | 2013-01-03 | 新日鐵住金株式会社 | Austenitic stainless steel pipe |
| CN104789883B (en) * | 2015-03-11 | 2017-10-31 | 重庆川深金属新材料股份有限公司 | One kind is used for pyrometric heat proof material and preparation method thereof |
-
2015
- 2015-12-25 CN CN201510986362.7A patent/CN105420621A/en active Pending
-
2016
- 2016-05-26 CN CN201610354858.7A patent/CN106011680A/en active Pending
- 2016-05-26 CN CN201610354857.2A patent/CN105803318A/en active Pending
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| CN105803356A (en) * | 2016-05-30 | 2016-07-27 | 苏州双金实业有限公司 | Steel with high toughness |
| CN107058905A (en) * | 2016-12-27 | 2017-08-18 | 振石集团东方特钢有限公司 | A kind of super austenitic stainless steel and preparation method thereof |
| CN107058905B (en) * | 2016-12-27 | 2019-09-20 | 振石集团东方特钢有限公司 | A kind of super austenitic stainless steel and preparation method thereof |
| CN111334699A (en) * | 2019-12-18 | 2020-06-26 | 国家电投集团黄河上游水电开发有限责任公司 | Carbon roasting combustor alloy material for aluminum |
Also Published As
| Publication number | Publication date |
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| CN105803318A (en) | 2016-07-27 |
| CN106011680A (en) | 2016-10-12 |
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