CN1026421C - High-temp anti-oxidation austenitic steel - Google Patents
High-temp anti-oxidation austenitic steel Download PDFInfo
- Publication number
- CN1026421C CN1026421C CN 92111849 CN92111849A CN1026421C CN 1026421 C CN1026421 C CN 1026421C CN 92111849 CN92111849 CN 92111849 CN 92111849 A CN92111849 A CN 92111849A CN 1026421 C CN1026421 C CN 1026421C
- Authority
- CN
- China
- Prior art keywords
- steel
- temperature
- present
- oxidation
- austenitic steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to high-temperature anti-oxidation austenitic steel, which comprises the chemical composition: 0.005 to 0.10 wt% of C, 0.5 to 1.0 wt% of Si, 0.5 to 1.0 wt% of Mn, 21 to 23 wt% of Cr, 28 to 32 wt% of Ni, 0.0005 to 0.003 wt% of Mg, 0.01 to 0.1 wt% of Ce, 1.5 to 2.5 wt% of Al, and Fe as the rest. The present invention not only has good high-temperature anti-oxidation and anti-corrosion performance and definite high-temperature strength, but also has good hot working performance and low cost. The present invention is suitable for manufacturing high-temperature parts such as radiant tubes of high-temperature heating furnaces, which can work at the high temperature for a long time.
Description
The invention belongs to field of alloy steel.Mainly be applicable to the thermal structure spare such as the heat furnace radiating pipe.
Resemble the high-temperature component of heat furnace radiating pipe and so on, its working conditions is more abominable, is in for a long time in flame and the high-temperature flue gas, is subjected to the effect of intensive high temperature oxidation and corrosion.Under this working conditions, with the radiator tube that general CrNi or CrNiN type heat-resisting steels are made, its work-ing life is lower, does not reach desired work-ing life; The radiator tube that adopts Refractoloy to make, though long service life can meet the demands, the cost height costs an arm and a leg.
The described austenite heat-resistant steel of Japanese kokai publication sho 56-163244, Si content is higher, and the upper limit reaches 3.5%, and Ni content is lower, is limited to 8% down, and though make this steel that the good oxidization resistance energy be arranged, hot workability is not so good, simultaneously, tissue is unstable behind the life-time service.
The object of the present invention is to provide a kind of hot workability and high-temperature oxidation resistant corrosive nature excellence, organize behind the life-time service stable, and economic again high-temp anti-oxidation austenitic steel.
At above-mentioned purpose, in the chemical ingredients of steel grade of the present invention, except that main alloy element nickel, chromium, aluminium and micro-rare earth, calcium, magnesium have also been added.Its concrete chemical ingredients (weight %) is:
C 0.005～0.1%, and Si 0.5～1.0%, and Mn 0.5～1.0%, and Cr 21～23%, and Ni 28～32%, and Ca 0.0005～0.003%, and Mg 0.001～0.005%, and Ce 0.01～0.1%, and Al 1.5～2.5%, and surplus is Fe.
In above-mentioned chemical ingredients, nickel is to form the austenite element, and hot strength, high-temperature oxidation resistant, impervious carbon and the impervious nitrogen performance of steel all had important advantageous effect.
Chromium is the principal element that improves the high-temperature oxidation resistance of steel.
Aluminium is the corrosive element of high-temperature oxidation resistant that improves steel.But, can only add in right amount because it is to form the strong element of ferrite energy force rate chromium.
Calcium, magnesium, rare earth are to the high temperature oxidation resistance of steel and the favourable element of hot strength performance.In calcium, magnesium, the compound adding steel of rare earth trace, can play the sulphur, the oxygen residual content that reduce in the steel, have the effect that purifies crystal boundary, not only can improve high-temperature oxidation resistance, and can improve hot workability.
Steel of the present invention can adopt vacuum induction furnace or medium-frequency induction furnace to smelt, be cast into steel ingot after, can forge, roll hot-work.This steel hot workability is good, the lumber recovery height.
Owing to added aluminium and calcium, magnesium, rare earth microelement in the steel of the present invention, make residual oxygen, sulphur content in the steel reduce greatly, high temperature oxidation resistance obviously improves, and reached the close level of Refractoloy Inconel 601, but cost reduces by 50% than Inconel 601.Low price; Steel of the present invention is heat when long, still keeps favorable tissue stability, compares with FeCrNiN type high temperature steel, under dynamic combustion product gases, has higher high temperature oxidation corrosion resistance performance.Table 1 and table 2 are respectively the performance comparison of steel of the present invention and Incoel 601 and FeCrNiN type high temperature steel.
The present invention is applicable to and makes the component that use temperature is worked under high temperature such as hyperthermia radiation pipe below 1100 ℃ and high-temperature heater conduit.
The performance comparison of table 1 the present invention and Inconel 601
Contrast project grade of steel Inconel 601 the present invention
6 circulations 30
Inferior hourly average 1.953 1.750
1200 ℃ of oxidation weight gains
Anti-speed g/m circulates
2H
Oxidisability
Energy specimen surface shape surface smoothing has surface smoothing
Condition small amounts skin takes off a small amount of oxygen
Falling iron sheet takes off
Fall
Table 2 the present invention and FeCrNiN type high temperature steel performance comparison
The present invention of contrast project grade of steel FeCrNiN type high temperature steel
Specimen surface has rotten specimen surface not have under the high-temp combustion atmosphere
Antioxidant anticorrosive lacing film erosion phenomenon evidence of corrosion
Test (referring to the accompanying drawing photo) (referring to accompanying drawing photo)
1000 ℃, 7 months
Compared with prior art, the present invention not only has excellent high-temperature oxidation resistant corrosive nature, and cheap, and practical value is big.
Description of drawings
Accompanying drawing is steel of the present invention and the specimen surface corrosion condition photo of FeCrNiN type high temperature steel behind antioxidant anticorrosive hanging test under the high-temp combustion atmosphere.1 is steel of the present invention among the figure, and 2 is FeCrNiN type high temperature steel.
Embodiment
According to the chemical ingredients proportioning, on vacuum induction furnace or intermediate frequency sense stove, smelt three stoves steel of the present invention.In order to contrast, under similarity condition, also smelted each stove of Iconel 601 and FeCrNiN type high temperature steel simultaneously respectively.Be cast into steel ingot after the melting, be swaged into strip plate subsequently, strip plate rolls into bar and sheet material through hot rolling.And mechanical property test is carried out in sampling from bar, and the high-temperature oxidation resistance test is carried out in sampling from sheet material.
The final chemical ingredients of smelting of embodiment and contrast grade of steel is as shown in table 3, and the mechanical property test result of gained and high-temperature oxidation resistance test-results are listed table 5 and table 4 respectively in.
Table 3 embodiment of the invention and the chemical ingredients (weight %) that contrasts grade of steel
Heat (batch) number smelting process C Si Mn Cr Ni Al Ca Mg Ce
The present invention's 1 vacuum induction furnace 0.068 0.94 0.76 22.30 30 1.65 0.002 0.005 0.084
2 vacuum induction furnaces 0.055 0.77 0.94 21.5 30.92 2.14 0.0009 0.001 0.025
3 medium-frequency induction furnaces 0.04 0.64 0.76 22.31 31.25 2.62 0.001 0.025
Cu Ti B
Inconel 601 vacuum induction furnaces 0.036 0.32 0.4 22.46 59.84 1.55 0.18 0.13 0.006
FeCrNiN type N
High temperature steel medium-frequency induction furnace 0.37 1.7 2.0 24.2 7.8 0.26 0.25
Table 4 embodiment of the invention and contrast grade of steel high temperature oxidation resistance
1200 ℃ of circulations in following 30 hours of heat (batch) number
Oxidation weight gain speed surface oxidation situation
g/m
2.h
The present invention 1 1.563 surfaces are uniform and smooth to be had less
Amount oxide skin comes off
2 1.7070 surfaces are uniform and smooth to be had less
Amount oxide skin comes off
3 1.9088 surfaces are uniform and smooth to be had less
Amount oxide skin comes off
Ionconel 601 1.9510 surfaces are uniform and smooth to be had less
Amount oxide skin comes off
Table 5 embodiment of the invention and the mechanical property that contrasts grade of steel
Test mechanical property Inconel 601 of the present invention
Temperature 123
Room temperature σ
bMPa 625 605 645 645
δ % 49.4 49.8 42.0 49.0
ψ % 75.6 77.3 66 77.95
1050℃ σ
bMPa 44
δ % 120
ψ % 98
1100℃ σ
bMPa 40 39 44
δ % 50.9 113 43.9
ψ % 56.4 71 46.15
1150℃ σ
bMPa 32 30 34.5
δ % 70.2 139 53.6
ψ % 63.7 77 52.45
1200℃ σ
bMPa 27
δ % 121
ψ % 99
Claims (1)
1, a kind of high-temp anti-oxidation austenitic steel, it is characterized in that chemical ingredients (weight %) is: C0.005～0.10%, Si0.5～1.0%, Mn0.5～1.0%, Cr21～23%, Ni28～32%, Ca0.0005～0.003%, Mg0.001～0.005%, Ce0.01～0.1%, Al1.5～2.5%, surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111849 CN1026421C (en) | 1992-12-31 | 1992-12-31 | High-temp anti-oxidation austenitic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111849 CN1026421C (en) | 1992-12-31 | 1992-12-31 | High-temp anti-oxidation austenitic steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076969A CN1076969A (en) | 1993-10-06 |
| CN1026421C true CN1026421C (en) | 1994-11-02 |
Family
ID=4945553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111849 Expired - Fee Related CN1026421C (en) | 1992-12-31 | 1992-12-31 | High-temp anti-oxidation austenitic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026421C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014175377A1 (en) | 2013-04-24 | 2014-10-30 | 新日鐵住金株式会社 | Low-oxygen-purified steel and low-oxygen-purified steel product |
| 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 |
-
1992
- 1992-12-31 CN CN 92111849 patent/CN1026421C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1076969A (en) | 1993-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1100890C (en) | High-temperature high-strength antioxidant anticorrosive austenite alloy | |
| CN112695255B (en) | Preparation method of ferrite martensite steel clad tube | |
| CN1942596A (en) | Austenitic stainless steel, method for producing same and structure using same | |
| CN1366555A (en) | Method for manufacturing high strength bolt excellent in resistance to delayed fracture and relaxation | |
| CN1902333A (en) | Ferritic cr-containing steel | |
| CN108220783A (en) | A kind of austenite heat-resistance stainless steel and its manufacturing method | |
| CN1171454A (en) | Strengthenable ethylene pyrolysis alloy | |
| CN105568177A (en) | Cu composite reinforced high-strength and toughness secondary hardening heat resistant steel and preparation method | |
| CN108642373A (en) | A kind of high-temperature oxidation resistant austenitic heat-resistance steel and its preparation process | |
| CN102031459A (en) | W-containing high-strength and high-toughness secondary hardening stainless steel | |
| CN105506470B (en) | A kind of high-strength high-toughness hot immersion plating aluminium steel plate and its manufacture method | |
| CN106148826A (en) | A kind of Al, Cu strengthen high-strength stainless refractory steel and preparation method | |
| CN103160753B (en) | A kind of containing Zr corrosionproof steel against sulfuric acid at dew point plate and manufacture method thereof | |
| JP2011510175A (en) | High alloy cold die steel | |
| CN1026421C (en) | High-temp anti-oxidation austenitic steel | |
| CN111485166A (en) | Cold-rolled low-temperature-resistant acid dew point corrosion steel and manufacturing method thereof | |
| CN1664152A (en) | High-strength anti-corrosion steel plate for rail vehicle and its making method | |
| CN1174817C (en) | Spring steel wire for direct drawing and its making process | |
| CN1266462A (en) | Method of manufacturing cold rolled steel sheet excellent in resistance to natural aging and panel properties | |
| CN113755766A (en) | Large-size long-life high-carbon bearing steel bar and preparation method thereof | |
| CN106636962A (en) | Preparation method of novel alloy material | |
| JP2004315936A (en) | Extremely low carbon-based acid-proof dew point corrosion steel having excellent intergranular fracture resistance | |
| CN1542156A (en) | High-silicon high-aluminium ferrite stainless steel and its application in preparation of heat-resisting steel pipe | |
| CN105506509B (en) | A kind of high intensity aludip and its manufacture method | |
| CN1109916A (en) | Creep resistant iron-chromium-aluminum alloy substantially free of molybdenum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |