CN105256100A - Electroslag system for reducing occluded foreign substances - Google Patents
Electroslag system for reducing occluded foreign substances Download PDFInfo
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- CN105256100A CN105256100A CN201510767365.1A CN201510767365A CN105256100A CN 105256100 A CN105256100 A CN 105256100A CN 201510767365 A CN201510767365 A CN 201510767365A CN 105256100 A CN105256100 A CN 105256100A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses an electroslag system for reducing occluded foreign substances. The electroslag system comprises, by weight, 45-50 parts of CaF2, 20-25 parts of Al2O3, 15-20 parts of CaO, 5-10 parts of MgO, not larger than 0.5 part of SiO2, not larger than 0.5 part of H2O, not larger than 0.3 part of FeO and not larger than 0.06 part of C. According to the electroslag system, the ratio of CaF2 to Al2O3 to CaO to MgO to SiO2 to H2O to FeO to C is 45%-50%: 20%-25%: 15%-20%:5%-10%: not larger than 0.1%: not larger than 0.5%: not larger than 0.3%: not larger than 0.06%; the content of the occluded foreign substances of a smelted electroslag ingot can be stably controlled within a scope; coarse systems A and B are smaller than or equal to 0 stage, a coarse system C is smaller than or equal to 0 stage, a coarse system D is smaller than or equal to 0.5 stage, and the sum of A, B, C and D is smaller than or equal to 1 stage; thin systems A and B are smaller than or equal to 0 stage, a thin system C is smaller than or equal to 0 stage, a thin system D is smaller than or equal to 0.5 stage, and the sum of A, B, C and D is smaller than or equal to 1 stage; and the DS occluded foreign substances are not larger than 1.0 stage.
Description
Technical field
The present invention relates to esr field, be specifically related to esr slag system.
Background technology
Along with the development of steel industry, Electro Slag Remelting Steel Market competition, user is more and more higher to Electro Slag Remelting Steel product purity requirements.At present, the ESR ingot that some project domestic is used has strict demand to non-metallic inclusion.Occurring requiring inclusion content, is slightly A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; Be carefully A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; DS inclusion is not more than the Electro Slag Remelting Steel of 1.0 grades.
At present, the domestic slag system for electroslag production is more, and the ESR ingot adopting these traditional slag systems at present to produce, cannot reach the requirement of user to Electro Slag Remelting Steel inclusion content.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, a kind of electroslag slag system realizing reducing inclusion is provided.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
Realize the electroslag slag system reducing inclusion, calculate by weight and comprise: CaF
2: 45 ~ 50 parts, Al
2o
3: 20 ~ 25 parts, CaO:15 ~ 20 part, MgO:5 ~ 10 part, SiO
2: be not more than 0.5 part, H
2o: be not more than 0.5 part, FeO: be not more than 0.3 part, C: be not more than 0.06 part.
Further technical scheme calculates CaF by weight
2it is 45 parts or 46 parts or 47 parts or 48 parts or 49 parts or 50 parts.
Further technical scheme calculates Al by weight
2o
3it is 20 parts or 21 parts or 22 parts or 23 parts or 24 parts or 25 parts.
Further technical scheme is that to calculate CaO be by weight 15 parts or 16 parts or 17 parts or 18 parts or 19 parts or 20 parts.
Further technical scheme is that to calculate MgO be by weight 5 parts or 6 parts or 7 parts or 8 parts or 9 parts or 10 parts.
Further technical scheme calculates SiO by weight
2it is 0.5 part or 0.4 part or 0.3 part or 0.2 part or 0.1 part.
Further technical scheme calculates H by weight
2o is 0.5 part or 0.4 part or 0.3 part or 0.2 part or 0.1 part.
Further technical scheme is that to calculate FeO be by weight 0.3 part or 0.2 part or 0.1 part.
Further technical scheme is that to calculate C be by weight 0.06 part or 0.05 part or 0.04 part or 0.03 part or 0.02 part or 0.01 part.
The CaF of in electroslag slag system of the present invention 45 ~ 50%
2, in slag system of the present invention, Main Function to reduce the fusing point of slag, viscosity and surface tension.The Al of 20 ~ 25%
2o
3in slag system of the present invention, Main Function is the specific conductivity that obviously can reduce slag, reduces power consumption.CaO Main Function in slag system of the present invention of 15 ~ 20% is the basicity that can increase slag, reduces the electric conductivity of slag.MgO Main Function in slag system of the present invention of 5 ~ 10% can form one deck on smelting process slag bath surface partly to solidify film, slag bath oxygen uptake can be prevented and the oxide compound that prevents from appraising at the current rate in slag transmits oxygen supply to metal pool, thus ESR ingot oxygen, hydrogen, nitrogen content are reduced, simultaneously this layer solidifies film and can reduce the thermosteresis of slag surface to atmospheric radiation, favourable to the reduction of smelting process inclusion content.To SiO in slag system
2, H
2the content of O, FeO, C has requirement, and in slag system of the present invention, Main Function is because these unstable oxides, unfavorable to the reduction of smelting process inclusion content.
Compared with prior art, the invention has the beneficial effects as follows: slag system CaF of the present invention
2: Al
2o
3: CaO:MgO:SiO
2: H
2o:FeO:C=45 ~ 50%:20 ~ 25%:15 ~ 20%:5 ~ 10% :≤0.1% :≤0.5% :≤0.3% :≤0.06% can, by the inclusion content of the ESR ingot after smelting, be slightly A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; Be carefully A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; DS inclusion is not more than 1.0 grades, in stable span of control.
Embodiment
All features disclosed in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification sheets (comprising any accessory claim, summary), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Below in conjunction with embodiment, the specific embodiment of the present invention is described in detail.
Case 1
The present embodiment realizes the electroslag slag system reducing inclusion, calculates by weight and comprises: CaF
2: 45 parts, Al
2o
3: 25 parts, CaO:20 part, MgO:9.5 part, SiO
2: be not more than 0.1 part, H
2o: be not more than 0.2 part, FeO: be not more than 0.1 part, C: be not more than 0.06 part.Quantity of slag 72Kg, produces with 3 tons of electroslag furnaces, and adopt the P91 continuously cast bloom of ∮ 310 specification, voltage presses 76-80V, and electric current presses 12500-13000A, produces ∮ 450,3 tons, P91 ESR ingot 5, analyzes inclusion content and sees the following form 1.
Table 1
The present embodiment can, by the inclusion content of the ESR ingot after smelting, be slightly A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; Be carefully A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; DS inclusion is not more than 1.0 grades, in stable span of control.
Case 2
The present embodiment realizes the electroslag slag system reducing inclusion, calculates by weight and comprises: CaF
2: 46 parts, Al
2o
3: 25 parts, CaO:19 part, MgO:9.5 part, SiO
2: be not more than 0.1 part, H
2o: be not more than 0.2 part, FeO: be not more than 0.1 part, C: be not more than 0.06 part.Quantity of slag 40Kg, produces with 3 tons of electroslag furnaces, and adopt the P92 continuously cast bloom of ∮ 220 specification, voltage presses 67-74V, and electric current presses 9200-10000, produces ∮ 350,1 ton, P92 ESR ingot 5, analyzes inclusion content and sees the following form 2.
Table 2
The present embodiment can, by the inclusion content of the ESR ingot after smelting, be slightly A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; Be carefully A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; DS inclusion is not more than 1.0 grades, in stable span of control.
Case 3
The present embodiment realizes the electroslag slag system reducing inclusion, calculates by weight and comprises: CaF
2: 47 parts, Al
2o
3: 23 parts, CaO:20 part, MgO:9.5 part, SiO
2: be not more than 0.1 part, H
2o: be not more than 0.2 part, FeO: be not more than 0.1 part, C: be not more than 0.06 part.Quantity of slag 48Kg, produces with 3 tons of electroslag furnaces, and adopt the P11 continuously cast bloom of ∮ 280 specification, voltage presses 73-78V, and electric current presses 11000-11500, produces ∮ 390,1.6 tons, P11 ESR ingot 5, analyzes inclusion content and sees the following form 3.
Table 3
The present embodiment can, by the inclusion content of the ESR ingot after smelting, be slightly A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; Be carefully A, B≤0 grade, C≤0 grade, D≤0.5 grade, and A+B+C+D≤1 grade; DS inclusion is not more than 1.0 grades, in stable span of control.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment " etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any one embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to the multiple explanatory embodiment of inventing, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of the open claim of the application, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (9)
1. realize the electroslag slag system reducing inclusion, it is characterized in that: calculate by weight and comprise: CaF
2: 45 ~ 50 parts, Al
2o
3: 20 ~ 25 parts, CaO:15 ~ 20 part, MgO:5 ~ 10 part, SiO
2: be not more than 0.5 part, H
2o: be not more than 0.5 part, FeO: be not more than 0.3 part, C: be not more than 0.06 part.
2. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating CaF by weight
2it is 45 parts or 46 parts or 47 parts or 48 parts or 49 parts or 50 parts.
3. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating Al by weight
2o
3it is 20 parts or 21 parts or 22 parts or 23 parts or 24 parts or 25 parts.
4. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating CaO is by weight 15 parts or 16 parts or 17 parts or 18 parts or 19 parts or 20 parts.
5. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating MgO is by weight 5 parts or 6 parts or 7 parts or 8 parts or 9 parts or 10 parts.
6. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating SiO by weight
2it is 0.5 part or 0.4 part or 0.3 part or 0.2 part or 0.1 part.
7. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating H by weight
2o is 0.5 part or 0.4 part or 0.3 part or 0.2 part or 0.1 part.
8. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating FeO is by weight 0.3 part or 0.2 part or 0.1 part.
9. the electroslag slag system realizing reduction inclusion according to claim 1, is characterized in that calculating C is by weight 0.06 part or 0.05 part or 0.04 part or 0.03 part or 0.02 part or 0.01 part.
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|---|---|---|---|
| CN201510767365.1A CN105256100A (en) | 2015-11-11 | 2015-11-11 | Electroslag system for reducing occluded foreign substances |
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|---|---|---|---|
| CN201510767365.1A CN105256100A (en) | 2015-11-11 | 2015-11-11 | Electroslag system for reducing occluded foreign substances |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435209A (en) * | 2016-09-30 | 2017-02-22 | 东北大学 | Method for preparing H13 steel by electroslag remelting of electric conducting crystallizer |
| CN111139393A (en) * | 2019-12-14 | 2020-05-12 | 张家港广大特材股份有限公司 | Smelting method of austenitic stainless steel for 316H nuclear power |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705362A (en) * | 2009-11-26 | 2010-05-12 | 攀钢集团江油长城特殊钢有限公司 | Electroslag remelting quaternary slag system for preparing high-purity stainless steel |
| CN102925712A (en) * | 2012-11-23 | 2013-02-13 | 重庆材料研究院 | Electroslag remelting method for difficult-processing high alloy stainless steel and electroslag remelting slag system adopting electroslag remelting method |
-
2015
- 2015-11-11 CN CN201510767365.1A patent/CN105256100A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705362A (en) * | 2009-11-26 | 2010-05-12 | 攀钢集团江油长城特殊钢有限公司 | Electroslag remelting quaternary slag system for preparing high-purity stainless steel |
| CN102925712A (en) * | 2012-11-23 | 2013-02-13 | 重庆材料研究院 | Electroslag remelting method for difficult-processing high alloy stainless steel and electroslag remelting slag system adopting electroslag remelting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435209A (en) * | 2016-09-30 | 2017-02-22 | 东北大学 | Method for preparing H13 steel by electroslag remelting of electric conducting crystallizer |
| CN111139393A (en) * | 2019-12-14 | 2020-05-12 | 张家港广大特材股份有限公司 | Smelting method of austenitic stainless steel for 316H nuclear power |
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Application publication date: 20160120 |