CN104278207B - A kind of heat resisting steel containing rare earth element - Google Patents
A kind of heat resisting steel containing rare earth element Download PDFInfo
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- CN104278207B CN104278207B CN201410349986.3A CN201410349986A CN104278207B CN 104278207 B CN104278207 B CN 104278207B CN 201410349986 A CN201410349986 A CN 201410349986A CN 104278207 B CN104278207 B CN 104278207B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention belongs to metallurgical technology field, be specifically related to a kind of heat resisting steel containing rare earth element.The chemical composition of this heat resisting steel is: C 0.20wt%, Si 2.0wt%, Mn 0.20t%, Mo 0.5wt%, Cr8.0～20.0wt%, Ni8.0～12.0wt%, Ce 0.5wt%, La 0.5wt%, P 0.04wt%, S 0.04wt%, surplus is Fe.In steel, add appropriate rare earth metal Ce or La, the creep rupture strength of steel can be improved significantly, reduce the creep rate of heat resisting cast steel.Rare earth richness glomerocryst circle, and decrease the impurity element on crystal boundary.Trace rare-earth improves heat-resistant high alloy steel heat resistance certain universality, and is that other elements cannot be substituted.Oxidation experiment shows: t=1200 DEG C, non-scale, bending strength σ w=1200～1400MPa.
Description
Technical field
The invention belongs to metallurgical technology field, be specifically related to a kind of heat resisting steel containing rare earth element.
Background technology
Rare earth is the title that left over by history gets off.Rare earth element (Rare Earth Element) is to start to find successively from last years of a century in 18th century, and people were often referred to as soil water-fast soild oxide at that time.Rare earth is usually separated with oxidation state, the most rare, thus obtains entitled rare earth (Rare Earth is called for short RE or R).
Rare earth element is IIIB race yttrium and the general name of lanthanide series in periodic chart.Wherein promethium is artificial element.They are the most active metals, and character is very much like, usual valences+3, and its hydrated ion has color mostly, are easily formed and stable join compound.Rare earth metal, owing to fusing point is relatively low, can separate out on negative electrode in molten condition at electrolytic process, therefore generally individually uses electrolysis to produce.Available chlorine compound and two kinds of salt systems of fluoride, the former adds electrolysis bath with rare earth chloride for raw material, and the latter adds the most in the form of the oxide.
China has abundant rare earth mineral resources, and minerogentic condition is superior, can be rated as richly endowed by nature, and the reserves verified occupy first of the world, provides solid foundation for developing china rare-earth industry.Rare earth element is widely used to the fields such as electronics, petrochemical industry, metallurgy, machinery, the energy, light industry, environmental conservation, agricultural.
Under the high temperature conditions, the steel with non-oxidizability and enough elevated temperature strengths and good heat resistance is referred to as heat resisting steel.It is usually used in manufacturing the parts at high temperature worked in boiler, steam turbine, dynamic power machine, industrial furnace and the industrial department such as aviation, petrochemical industry, proposes heat resisting steel to require as follows: creep rupture strength, creep strength and the rupture ductility that (1) is enough；(2) high non-oxidizability and corrosion resisting property；(3) enough structure stabilities；(4) good welding performance；(5) good cold working and heat processing technique performance.Rare earth improves the heat resistance of heat-resistant high alloy steel certain universality.Develop rare earth application in heat resisting steel for this, to utilizing the rich of China to produce resource rare earth, promote that the development of heat resisting steel is all the most significant.
Summary of the invention
The technical problem to be solved is to provide a kind of heat resisting steel containing rare earth element, the technological deficiency overcoming existing heat resisting steel to exist, and meets the adaptability of heat resisting steel.
In order to solve the problems referred to above, the technical scheme that the present invention provides:
A kind of heat resisting steel containing rare earth element, the chemical composition that it is characterized in that this heat resisting steel is: C 0.20wt%, Si 2.0wt%, Mn 0.20t%, Mo 0.5wt%, Cr8.0～20.0wt%, Ni8.0～12.0wt%, Ce 0.5wt%, La 0.5wt%, P 0.04wt%, S 0.04wt%, surplus is Fe.
A kind of heat resisting steel containing rare earth element, the chemical composition that it is characterized in that this heat resisting steel is: C 0.20wt%, Si 2.0wt%, Mn 0.20t%, Mo 0.5wt%, Cr8.0～20.0wt%, Ni 8.0～12.0wt%, Ce 0.4wt%, La 0.4wt%, P 0.04wt%, S 0.04wt%, surplus is Fe.
Ce 0.3wt% in described heat resisting steel.
La 0.4wt% in described heat resisting steel.
Ce 0.01wt%, La 0.2wt% in described heat resisting steel.
Compared with prior art, its remarkable advantage is the present invention:
(1) in steel, add appropriate rare earth metal Ce or La, the creep rupture strength of steel can be improved significantly, reduce the creep rate of heat resisting cast steel.Rare earth richness glomerocryst circle, and decrease the impurity element on crystal boundary.
(2) trace rare-earth improves heat-resistant high alloy steel heat resistance certain universality, and is that other elements cannot be substituted.Oxidation experiment shows: t=1200 DEG C, non-scale, bending strength σ w=1200～1400MPa
(3) Rare earth heat-resistant steel resists and has good non-oxidizability and obdurability and creep-resistant property, reduces the content of nickel in heat resisting steel simultaneously, saved the resource of scarcity metals nickel while not reducing steel mechanics performance,.
Specific embodiment party
Below in conjunction with detailed description of the invention, technical scheme is further described in detail.
Embodiment 1
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.20wt%, Si2.0wt%, Mn0.20t%, Mo0.5wt%, Cr8.0wt%, Ni8.0wt%, Ce0.5wt%, La0.5wt%, P0.04wt%, S0.04wt%, surplus is Fe.
Embodiment 2
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.020wt%, Si1.8wt%, Mn0.020t%, Mo0.05wt%, Cr9.0wt%, Ni9.0wt%, Ce0.05wt%, La0.05wt%, P0.03wt%, S0.03wt%, surplus is Fe.
Embodiment 3
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.18wt%, Si1.5wt%, Mn0.010t%, Mo0.04wt%, Cr10.0wt%, Ni10.0wt%, Ce0.03wt%, La0.03wt%, P0.02wt%, S0.02wt%, surplus is Fe.
Embodiment 4
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.16wt%, Si1.2wt%, Mn0.011t%, Mo0.02wt%, Cr11.0wt%, Ni10.0wt%, Ce0.03wt%, La0.03wt%, P0.02wt%, S0.02wt%, surplus is Fe.
Embodiment 5
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.16wt%, Si1.2wt%, Mn0.011t%, Mo0.02wt%, Cr11.0wt%, Ni10.0wt%, Ce0.4wt%, La0.4wt%, P0.02wt%, S0.02wt%, surplus is Fe.
Embodiment 6
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.16wt%, Si1.2wt%, Mn0.011t%, Mo0.02wt%, Cr11.0wt%, Ni10.0wt%, Ce0.01wt%, La0.03wt%, P0.02wt%, S0.02wt%, surplus is Fe.
Embodiment 7
A kind of heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel is: C0.16wt%, Si1.2wt%, Mn0.011t%, Mo0.02wt%, Cr11.0wt%, Ni10.0wt%, Ce0.01wt%, La0.2wt%, P0.02wt%, S0.02wt%, surplus is Fe.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (5)
1. the heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel
For: C 0.20wt%, 1.2 Si 2.0wt%, Mn 0.20t%, Mo
0.5wt%, Cr8.0～11.0wt%, Ni8.0～12.0wt%, Ce 0.5wt%,
La 0.5wt%, P 0.04wt%, S 0.04wt%, surplus is Fe.
2. the heat resisting steel containing rare earth element, it is characterised in that the chemical composition of this heat resisting steel
For: C 0.20wt%, 1.2 Si 2.0wt%, Mn 0.20t%, Mo
0.5wt%, Cr8.0～11.0wt%, Ni8.0～12.0wt%, Ce 0.4wt%,
La 0.4wt%, P 0.04wt%, S 0.04wt%, surplus is Fe.
A kind of heat resisting steel containing rare earth element the most according to claim 2, its feature exists
In: the Ce 0.3wt% in described heat resisting steel.
A kind of heat resisting steel containing rare earth element the most according to claim 2, its feature exists
In: the La 0.4wt% in described heat resisting steel.
A kind of heat resisting steel containing rare earth element the most according to claim 2, its feature exists
In: Ce 0.01wt%, the La 0.2wt% in described heat resisting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410349986.3A CN104278207B (en) | 2014-07-22 | 2014-07-22 | A kind of heat resisting steel containing rare earth element |
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| CN201410349986.3A CN104278207B (en) | 2014-07-22 | 2014-07-22 | A kind of heat resisting steel containing rare earth element |
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| CN104278207A CN104278207A (en) | 2015-01-14 |
| CN104278207B true CN104278207B (en) | 2016-08-24 |
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| CN109576580B (en) * | 2018-11-29 | 2020-09-29 | 武汉华培动力科技有限公司 | Heat-resistant steel for nozzle assembly of variable-section supercharger of diesel engine and smelting method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1677086A1 (en) * | 1989-10-30 | 1991-09-15 | Производственное Объединение "Гомсельмаш" | Heat resistant steel |
| DE69403975T2 (en) * | 1993-02-03 | 1997-12-18 | Hitachi Metals Ltd | Heat-resistant austenitic cast steel and components of an exhaust system made from it |
| SE508149C2 (en) * | 1996-02-26 | 1998-09-07 | Sandvik Ab | Austenitic stainless steel and use of the steel |
| KR100931448B1 (en) * | 2005-04-04 | 2009-12-11 | 수미도모 메탈 인더스트리즈, 리미티드 | Austenitic Stainless Steels |
| CN102534420B (en) * | 2012-03-30 | 2013-09-18 | 大连裕龙高速钢有限公司 | Low-nickel high performance heat-resistant steel |
| JP5880306B2 (en) * | 2012-06-20 | 2016-03-09 | 新日鐵住金株式会社 | Austenitic heat-resistant steel pipe |
| CN102994897A (en) * | 2012-08-13 | 2013-03-27 | 陈德祥 | High-resisting material frame made of low-chromium cast iron |
| CN103397266B (en) * | 2013-08-15 | 2015-08-19 | 上海卓然工程技术有限公司 | A kind of high temperature steel and preparation method thereof |
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Inventor after: Yang Ming Inventor after: Li Hecheng Inventor before: Yang Ming |
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Effective date of registration: 20160608 Address after: 242300 Anhui economic and Technological Development Zone, Ningguo, Wang Wang Park S104 Road on the eastern side of the road on the south side of Industrial Road, No. two Applicant after: ANHUI SANFANG NEW MATERIAL TECHNOLOGY CO., LTD. Address before: 242300, Anhui province Xuancheng city Ningguo River Lek office pay Bay Applicant before: Anhui Sanfang Cast Grinding Materials Co., Ltd. |
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