CN102086498A - High-Cr high-Ni anti-oxidation heat resistant steel - Google Patents
High-Cr high-Ni anti-oxidation heat resistant steel Download PDFInfo
- Publication number
- CN102086498A CN102086498A CN200910220420XA CN200910220420A CN102086498A CN 102086498 A CN102086498 A CN 102086498A CN 200910220420X A CN200910220420X A CN 200910220420XA CN 200910220420 A CN200910220420 A CN 200910220420A CN 102086498 A CN102086498 A CN 102086498A
- Authority
- CN
- China
- Prior art keywords
- high temperature
- percent
- heat resistant
- resistant steel
- temperature 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.)
- Pending
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses high-Cr high-Ni anti-oxidation heat resistant steel, which is characterized by comprising the following alloy components in percentage by mass: 0.01 to 0.5 percent of carbon (C), 20 to 25 percent of chromium (Cr), 0.01 to 3 percent of niobium (Nb), 0.015 to 3 percent of silicon (Si), 1.0 to 5.0 percent of manganese (Mn), 10 to 20 percent of nickel (Ni) and the balance of ferrum (Fe) and inevitable impurities. Chemical compositions of heat resistant steel are adjusted appropriately, so that high temperature intensity is enhanced, and high temperature oxidation resistance is remarkably improved; and a high purity smelting technology is adopted, and trace impurity elements such as S and P are strictly controlled, so that secondary pollution caused by the preparation process of a heat resistant steel casting is effectively prevented, the manufacturing yield of the heat resistant steel casting is increased, the production efficiency is improved, the manufacturing cost is lowered, and the market competitiveness of a product is enhanced on the premise of producing a high-quality heat resistant steel casting.
Description
Technical field
The present invention relates to a kind of high temperature steel, particularly relate to the anti-oxidant high temperature steel of the high Ni of a kind of high Cr, belong to C22C38/00 (2006.01) the I technical field in the International Patent Classification (IPC).
Background technology
High temperature steel is meant to have and is higher than 450 ℃ working temperature, and certain intensity and steel grade anti-oxidant, corrosion resistance are arranged, and is widely used in the member of equipment such as making boiler, steam turbine, oil engine, High Temperature Furnaces Heating Apparatus and petrochemical complex.The research of relevant high temperature steel starting is compared early in the world, and especially developed countries such as the U.S., Japan and Germany began to be extensive use of high temperature steel on petrochemical complex, energy source and power, internal combustion turbine as far back as the fifties in last century, and forms specialized standard separately.In recent years, along with the continuous sharp increase of global energy demand, the potential of demand of high temperature steel is huge aspect energy source and power and internal combustion turbine, especially aspect thermal power generation.
The research of relevant high temperature steel is started late, but the deficiency of the common existence of high temperature steel is that work-ing life is short, when being incubated or slowly cooling off for about 400～850 ℃, separates out Cr mainly due to alloy on crystal boundary
23C
6, make that matrix forms poor Cr district around it, serious intergranular corrosion very easily takes place, and with the increase of C content in the steel, the tendency of grain boundary corrosion is big more.This high temperature steel welding and heat affected zone (550～800 ℃) grain boundary corrosion are particularly serious most serious of all, even cause crystal grain to peel off, steel part brittle failure, thereby the work-ing life of shortening alloy.
The present invention is that background is carried out with above-mentioned situation, and its purpose is: by suppressing to follow near the remarkable reduction of the long-time high temperature creep strength of using 650 ℃, be provided at the New Heat-Resistant Steel that can have excellent hot properties, weather resistance etc. for a long time.
Summary of the invention
The objective of the invention is to solve the above-mentioned technical problem that prior art exists, by the high purity smelting technology, the high Ni of a kind of high Cr is provided anti-oxidant high temperature steel, the present invention is by suitably adjusting the chemical ingredients of high temperature steel, when improving its hot strength, obviously improve high-temperature oxidation resistance; Also adopt the high purity smelting technology, strict control micro impurity element S, P, the effectively secondary pollution of prevention in the preparation process of high temperature steel foundry goods, improve the qualification rate that the high temperature steel foundry goods is made, increase production efficiency, reduce manufacturing cost, under the prerequisite of producing high quality high temperature steel foundry goods, improve the competitiveness of product in market.
In order to guarantee that alloy has enough anti-oxidant, resistance to deformations, cold-and-heat resistent fatigue property, requirements such as dimensional stability, produce high quality high temperature steel foundry goods satisfy hold warm Capability Requirement in, also to have good compact type, low weight, low cost of manufacture, life-time service reliable characteristics.For this reason on the chemical composition design, adjust Cr, Ni, Nb and ree content significantly according to a large amount of practical experiences, greatly improve the high-temperature behavior and the antioxidant property of existing high temperature steel alloy, fundamentally solve short, the yielding deficiency of domestic existing high temperature steel alloy life of the same type.
In high temperature steel design of alloy process, primary study Cr, Ni and Nb influence to alloy microstructure, suitably increase strong carbide forming element content such as Cr, Nb in the alloy, can significantly increase the high-temperature stability of high temperature-Cr, and then improve the antioxidant property and the heat resistance of alloy.
The composition characteristic of this high temperature steel alloy that the present invention provides adds Si, Cr, Ni, Nb and forms on the austenitic stainless steel basis, use temperature is above 1000 ℃, microstructure is an austenite, contains a spot of ferritic structure, has good antioxidant property simultaneously.
Owing to during the long term operation of high temperature steel alloy, the phenomenon of redistributing of alloying element can take place, promptly carbide forming element Cr, Mo be to carbide internal diffusion, enrichment, and cause the dilution of solid solution alloy element, causes heat resistance to descend.Thereby this high temperature steel that the present invention provides adopts the unit again that adds prevention alloying element diffusion aggregation such as strong carbon thing forming element Nb to improve the heat resistance of steel.So this steel grade use temperature can reach 1050 ℃, and has centroid cubic lattice structure, atomic arrangement is tightr.The velocity of diffusion of solid solution atom is slow.Hot strength is higher, has advantages such as good plasticity, toughness, weldability and cold-forming.This high temperature steel that the present invention provides adopts complex alloysization, adds a large amount of Ni, alloying elements such as Cr, and by solution strengthening, aging precipitation is strengthened and grain-boundary strengthening, makes it obtain enough hot strengths and other over-all properties.
The technical scheme that the present invention provides is: the anti-oxidant high temperature steel of the high Ni of this high Cr is characterized in that alloying constituent is expressed as with quality %:
Carbon (C): 0.01～0.5%, chromium (Cr): 20～35%, niobium (Nb): 0.01～3%,
Silicon (Si): 0.015～3%, manganese (Mn): 1.0～5.0%, nickel (Ni): 10～20%,
Surplus is made up of iron (Fe) and unavoidable impurities.
For better finishing purpose of the present invention, the optimal alloy composition of the anti-oxidant high temperature steel of the described high Ni of this high Cr is expressed as with quality %:
Carbon (C): chromium (Cr) 0.3%: niobium (Nb) 20%: 3%,
Silicon (Si): manganese (Mn) 1.0%: nickel (Ni) 1.0%: 10%,
Surplus is made up of iron (Fe) and unavoidable impurities.
Compared with prior art, the invention has the beneficial effects as follows: cross the chemical ingredients of suitably adjusting high temperature steel, when improving its hot strength, obviously improve high-temperature oxidation resistance; Also adopt the high purity smelting technology, strict control micro impurity element S, P, the effectively secondary pollution of prevention in the preparation process of high temperature steel foundry goods, improve the qualification rate that the high temperature steel foundry goods is made, increase production efficiency, reduce manufacturing cost, under the prerequisite of producing high quality high temperature steel foundry goods, improve the competitiveness of product in market.
Embodiment
Embodiment
The preferred plan that the present invention obtains: % represents with quality, contain carbon (C): chromium (Cr) 0.3%: niobium (Nb) 20%: silicon (Si) 3%: manganese (Mn) 1.0%: nickel (Ni) 1.0%: 10%, surplus is made up of iron (Fe) and unavoidable impurities.
The alloy high purity smelting technology of the anti-oxidant high temperature steel of the high Ni of this high Cr that the present invention provides is:
After reinforced, send electricity in the time of about 10 minutes, electric power reaches 80KW, power reaches more than the 120KW when continuing to be warmed up to 20 minutes, and furnace charge begins to dissolve, be warmed up to 30 minutes after, molten steelization was clear when power reached 150KW, begin to skim, sample examination, add alloy material according to result of laboratory test, be warmed up to 48 minutes after, the beginning thermometric, temperature begins cast in the time of 1650 ℃.Wherein each gold element burn out rate sees the following form in the smelting process:
Each alloying element burn out rate in the alloy smelting process
| Element | C | Si | Mn | Cr | Ti | Al | |
| Burn out rate (%) (basic furnace) | 5 ～10 | 30 ～40 | 20 ～30 | 5 ～10 | 40 ～60 | 30 ～50 | 0 |
The foundry goods of the anti-oxidant high temperature steel cast of the high Ni of this high Cr that the present invention provides has enough high temperature strengths, high temperature oxidation resistance, corrosion resistance nature, anti-hot and cold anti-fatigue performance.Product can bear below 1050 ℃, and prolonged and repeated heating is used and indeformable.Its technical indicator is: temperature index/℃～1150, work-ing life/h 24480, and deflection/mm/m 0.4.
Claims (2)
1. anti-oxidant high temperature steel of the high Ni of high Cr is characterized in that the alloying constituent of high temperature steel is expressed as with quality %:
Carbon (C): 0.01～0.5%, chromium (Cr): 20～35%, niobium (Nb): 0.01～3%,
Silicon (Si): 0.015～3%, manganese (Mn): 1.0～5.0%, nickel (Ni): 10～20%,
Surplus is made up of iron (Fe) and unavoidable impurities.
2. the anti-oxidant high temperature steel of the high Ni of high Cr according to claim 1 is characterized in that the optimal alloy composition of described high temperature steel is expressed as with quality %:
Carbon (C): 0.3%, chromium (Cr) .:20%, niobium (Nb): 3%,
Silicon (Si): manganese (Mn) 1.0%: nickel (Ni) 1.0%: 10%,
Surplus is made up of iron (Fe) and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910220420XA CN102086498A (en) | 2009-12-04 | 2009-12-04 | High-Cr high-Ni anti-oxidation heat resistant steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910220420XA CN102086498A (en) | 2009-12-04 | 2009-12-04 | High-Cr high-Ni anti-oxidation heat resistant steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102086498A true CN102086498A (en) | 2011-06-08 |
Family
ID=44098502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910220420XA Pending CN102086498A (en) | 2009-12-04 | 2009-12-04 | High-Cr high-Ni anti-oxidation heat resistant steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102086498A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268611A (en) * | 2011-07-07 | 2011-12-07 | 徐振伟 | Fe-based heat-resisting alloy and preparation method thereof |
| CN102605275A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Corrosion resistant nickel-chromium iron alloy |
| CN103834876A (en) * | 2014-02-28 | 2014-06-04 | 西峡县内燃机进排气管有限责任公司 | Austenite heat-resisting cast steel exhaust manifold and casting process thereof |
| CN104718304A (en) * | 2012-10-10 | 2015-06-17 | 日立金属株式会社 | Ferritic heat-resistant cast steel with excellent machinability and exhaust component consisting of same |
| CN105483492A (en) * | 2015-12-08 | 2016-04-13 | 江苏华冶科技有限公司 | High-temperature-resisting alloy material for radiant tube and casting process of high-temperature-resisting alloy material |
| CN108699661A (en) * | 2016-11-25 | 2018-10-23 | 浦项工科大学校产学协力团 | The austenitic steel of having excellent high-temperature strength |
| CN112746227A (en) * | 2019-10-30 | 2021-05-04 | 盖瑞特交通一公司 | Stainless steel alloy, turbocharger component formed from stainless steel alloy, and method of manufacturing the same |
| CN113549820A (en) * | 2021-06-29 | 2021-10-26 | 鞍钢股份有限公司 | High-carbon low-ferrite-content austenitic stainless steel plate and production method thereof |
-
2009
- 2009-12-04 CN CN200910220420XA patent/CN102086498A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268611A (en) * | 2011-07-07 | 2011-12-07 | 徐振伟 | Fe-based heat-resisting alloy and preparation method thereof |
| CN102268611B (en) * | 2011-07-07 | 2012-12-19 | 徐振伟 | Fe-based heat-resisting alloy and preparation method thereof |
| CN102605275A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Corrosion resistant nickel-chromium iron alloy |
| CN104718304A (en) * | 2012-10-10 | 2015-06-17 | 日立金属株式会社 | Ferritic heat-resistant cast steel with excellent machinability and exhaust component consisting of same |
| US9758851B2 (en) | 2012-10-10 | 2017-09-12 | Hitachi Metals, Ltd. | Heat-resistant, cast ferritic steel having excellent machinability and exhaust member made thereof |
| CN103834876A (en) * | 2014-02-28 | 2014-06-04 | 西峡县内燃机进排气管有限责任公司 | Austenite heat-resisting cast steel exhaust manifold and casting process thereof |
| CN105483492A (en) * | 2015-12-08 | 2016-04-13 | 江苏华冶科技有限公司 | High-temperature-resisting alloy material for radiant tube and casting process of high-temperature-resisting alloy material |
| CN108699661A (en) * | 2016-11-25 | 2018-10-23 | 浦项工科大学校产学协力团 | The austenitic steel of having excellent high-temperature strength |
| CN112746227A (en) * | 2019-10-30 | 2021-05-04 | 盖瑞特交通一公司 | Stainless steel alloy, turbocharger component formed from stainless steel alloy, and method of manufacturing the same |
| CN113549820A (en) * | 2021-06-29 | 2021-10-26 | 鞍钢股份有限公司 | High-carbon low-ferrite-content austenitic stainless steel plate and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102086498A (en) | High-Cr high-Ni anti-oxidation heat resistant steel | |
| CN106636848B (en) | A kind of preparation method of wear-resisting erosion resistance nickel-base alloy silk material | |
| CN106756253B (en) | Brush seal high-performance high-temperature nickel-base alloy brush filament material | |
| CN101545076B (en) | Martensite refractory stainless steel and manufacturing method thereof | |
| JP7340627B2 (en) | Manufacturing method of 7Ni steel plate for LNG storage tank | |
| CN102330035B (en) | Heat resistant steel, and heat resistant steel pipe and manufacturing method thereof | |
| CN102392195A (en) | High-strength high-toughness nuclear power pressure vessel forging steel and its manufacturing method | |
| CN105014258A (en) | Nickel-base superalloy welding wire for 700 DEG C-above ultra-supercritical coal power generation equipment | |
| CN101302599A (en) | Niobium microalloyed high strength hot work die steel and preparation thereof | |
| CN101921967A (en) | Novel austenitic heat-resistance stainless steel | |
| CN106756257A (en) | A kind of resistance to high temperature oxidation Wear-resistant Co-base alloy silk material and preparation method thereof | |
| CN103667967B (en) | A kind of Heat-resistant steel for ultra-supercritical steam turbine rotor | |
| CN109136653A (en) | For the nickel-base alloy of nuclear power generating equipment and its manufacturing method of hot rolled plate | |
| CN109048119B (en) | Solid welding wire for 650 ℃ ultra-supercritical thermal power turbine steel casting | |
| CN104630597A (en) | Iron-nickel-chromium-based superalloy and manufacturing method thereof | |
| CN107620011B (en) | A kind of heat-resistance stainless steel seamless pipe and preparation method thereof | |
| CN102517517A (en) | Refractory steel for vane of steam turbine of ultra supercritical fossil power plant and manufacturing method | |
| CN106381452B (en) | The heat-resisting austenitic stainless steel of high structure stability at a kind of 700 DEG C | |
| CN103938106A (en) | High-temperature heat-resisting wear-resisting cast steel containing chromium, nickel, copper, vanadium, niobium and nitrogen | |
| CN102268603B (en) | High-Al ferritic heat-resistant steel | |
| CN103215519A (en) | Main steam pipeline for supercritical thermal power generating unit | |
| CN112877603A (en) | Alloy material for incinerator grate and preparation method thereof | |
| CN102517507A (en) | Steel for blades of turbine of ultra-supercritical fossil power plants and manufacturing method | |
| CN106929710A (en) | Ultra-supercritical steam turbine rotor high-strength and high ductility heat-resisting alloy and preparation method thereof | |
| CN103131951A (en) | Ferrite heat-resistant steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110608 |