CN1032438C - Rare-earth contg. poly component super-high temperature sulfur-resistant and anti-wear steel - Google Patents
Rare-earth contg. poly component super-high temperature sulfur-resistant and anti-wear steel Download PDFInfo
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- CN1032438C CN1032438C CN 93103220 CN93103220A CN1032438C CN 1032438 C CN1032438 C CN 1032438C CN 93103220 CN93103220 CN 93103220 CN 93103220 A CN93103220 A CN 93103220A CN 1032438 C CN1032438 C CN 1032438C
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- high temperature
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Abstract
The present invention relates to rare-earth multielement super-high temperature sulfur and wear resistant steel which belongs to high temperature resistance cast steel. The working temperature of the presently used austenite steel, such as 1Cr18Ni9Ti, etc. is below 1150 DEG C, and working components which are used under adverse environments for bearing high temperature, oxidation, creep deformation, thermal shock, etc., can not be normally used for a long time. The present invention relates to a rare-earth multielement super-high temperature, sulfur and wear resistant steel containing little nickel, which mainly contains elements, such as C, Cr, Ni, W, Mo, Ti, Re, Mn and Si, and Fe as the rest. A metallic phase is the sum of iron base, austenite and carbide hard points. The working temperature of the cast steel is from 1000 to 1200 DEG C, and the cast steel can be used for various high temperature castings.
Description
Rare earth multicomponent ultrahigh-temperature sulfur-resistant and anti-wear steel belongs to a kind of high temperature resistant cast steel
The high temperature steel that uses has austenite heat-resistance steel grades such as 1Cr18Ni9Ti, Cr17Mn12N, Cr25Ni20Si2, Cr24Ni12N at present, and its working temperature is below 1150 ℃.The key working part that is used for substantial equipment such as building materials, metallurgy, electric power, chemical industry, thermal treatment, its working conditions is very abominable, require parts energy high temperature oxidation resisting, creep resistance, heat shock resistance, bear sharp wear, existing steel grade can not satisfy the production needs, often causes the stop work and production maintenance or changes spare part.
The objective of the invention is to develop the low rare earth multicomponent ultrahigh-temperature sulfur-resistant and anti-wear steel of a kind of nickel content, its working temperature can reach 1200 ℃.
Composition of the present invention constitutes (weight %): C0.1～0.5, Cr18～24, Si1～2, Mn1～2, Ni3～9, W1～5, Mo0.5～2, Ti0.2～0.4, add RE0.3～0.5, and all the other are Fe.
This high temperature cast steel metallographic is ferrite+austenite+carbide hard particle.
The main method that this high temperature cast steel forms is:
1, on the matrix of the cast material of high chromium content ferrite ultrahigh-temperature, adds the nickel element of regulation content, make metallographic become the two-phase cast material of ferritic plus austenitic, make the α K value of steel bring up to 6Kg from 0.2Kg;
2, add tungsten (W) element, improve its high-temperature wearable intensity;
3, add molybdenum (Mo) element and raising carbon content, make steel indeformable when cold cycling:
4, add titanium (Ti) element, make the carbon in the steel form dystectic titanium carbide hard point, the harmful carbide network in the ferrite that also disappeared simultaneously increases the various performances of material.
5。Adopt the processing method of solidifying simultaneously, just can obtain the metallographic structure of ferrite+austenite+carbide hard particle.
6, in ladle, add the mechanical property that rare earth element further improves material, improve the over-all properties of steel.
The advantage of the high temperature cast steel of the present invention's development is:
1, in the composition of steel, increased W, Mn, Ti, RE, reduced the content of nickel in the steel, compared with homemade Cr25Ni20Si2 steel, joint nickel 70%, price reduces by 40%, and China is few nickel resources, and joint nickel is significant;
2, the member that utilizes high temperature cast steel that the present invention develops to produce prolongs 1～3 times work-ing life, and working temperature can reach 1200 ℃;
3, high temperature cast steel of the present invention is worked under hot conditions, has over-all propertieies such as anti-oxidant, creep resistance, heat shock resistance, heat resistanceheat resistant abrasion.Using high temperature cast steel of the present invention to be used for the cement mill kilneye cap iron can work more than 1 year; The electric furnace station-service can use 2～4 years in the drop-bottom of 1200 ℃ of work, indeformable, not oxidation, intact; Steel Mill makes the track brick and uses seven wheat harvesting periods to have only wearing and tearing, does not have crackle.
Embodiment: the steel of present embodiment is made of following composition, and by weight percentage: C0.3, Cr24, Si1, Mn1, Ni6, W2, Mo1, Ti0.3, adding RE0.3, all the other are Fe.
Claims (1)
1, a kind of rare earth multicomponent ultrahigh-temperature sulfur-resistant and anti-wear steel, it is characterized in that: composition constitutes (weight %) and is, C0.1～0.5, Cr18～24, Ni3～9, W1～5, Mo0.5～2, Ti0.2～0.4, Mn1～2, Si1～2 also add RE0.3～0.5, and all the other are Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103220 CN1032438C (en) | 1993-03-24 | 1993-03-24 | Rare-earth contg. poly component super-high temperature sulfur-resistant and anti-wear steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103220 CN1032438C (en) | 1993-03-24 | 1993-03-24 | Rare-earth contg. poly component super-high temperature sulfur-resistant and anti-wear steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1082621A CN1082621A (en) | 1994-02-23 |
| CN1032438C true CN1032438C (en) | 1996-07-31 |
Family
ID=4984519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93103220 Expired - Lifetime CN1032438C (en) | 1993-03-24 | 1993-03-24 | Rare-earth contg. poly component super-high temperature sulfur-resistant and anti-wear steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032438C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141098A (en) * | 2014-07-28 | 2014-11-12 | 宁国市开源电力耐磨材料有限公司 | Wear-resistant and heat-resistant steel based on Ti and W |
| CN106544601A (en) * | 2016-12-29 | 2017-03-29 | 董世祥 | Many performance high temperature resistant series cast steels |
| CN113444983A (en) * | 2021-06-10 | 2021-09-28 | 江阴市万众精密机械有限公司 | Corrosion-resistant and weather-resistant gear ring for gear box coupling and preparation method thereof |
-
1993
- 1993-03-24 CN CN 93103220 patent/CN1032438C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1082621A (en) | 1994-02-23 |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |