CN101775500A - Premelted refining protective material for electroslag furnace - Google Patents
Premelted refining protective material for electroslag furnace Download PDFInfo
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- CN101775500A CN101775500A CN201010030220A CN201010030220A CN101775500A CN 101775500 A CN101775500 A CN 101775500A CN 201010030220 A CN201010030220 A CN 201010030220A CN 201010030220 A CN201010030220 A CN 201010030220A CN 101775500 A CN101775500 A CN 101775500A
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- electroslag
- protective material
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- electroslag furnace
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Abstract
The invention discloses a premelted refining protective material for an electroslag furnace, comprising the following ingredients by weight percent: 0.25-1.35 percent of SiO2, 14.01-28.34 percent of Al2O3, 53.98-62.15 percent of CaO, 2.59-5.62 percent of MgO, 37.24-72.31 percent of CaF2, 0.017-0.041 percent of S and 0.33-0.72 percent of ignition loss. Through the understanding of a production process and the communication with technical personnel in a steel plant, a scheme for distributing slag is designed according to a used steel grade. Tests for continuously tracking 11 furnaces indicate that the arcing of electroslag steel-making is stable without flow cutoff phenomenon. In addition, slag materials are granular and convenient to add in the remelting process, and chemical compositions of electroslag ingots are qualified after the remelting is finished, and conform to standard requirements.
Description
Technical field
The invention belongs to the metallurgic auxiliary materials technical field, particularly a kind of Premelted refining protective material for electroslag furnace.
Background technology
16 tons of gas shield electroslag furnaces of Daye Iron And Steel Company are introduced from Austrian Inteco company, and its steel-making requirements is all used the fritting slag charge, and the slag material is prepared by its company oneself can't reach requirement.The electroslag furnace pro-molten refining slag of therefore entrusting my company to produce.This electroslag furnace with pro-molten refining slag test steel grade be one, bearing steel: G20Cr2N14A, GC4r15S1Mn etc.; Two, military project structure iron: 30CrMnSiA; Three, die steel: H13 series, D2,9Cr3Mo etc.The test ingot shape that the output steel is fixed: classifications such as 3.0t, 5.0t, 8.0t, 16.0t.
Summary of the invention
The invention provides and a kind ofly can satisfy bearing steel, military project structure iron, die steel and connect and build the Premelted refining protective material for electroslag furnace of requirement.
A kind of Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
20.25～1.35%; Al
2O
314.01～28.34%; CaO 53.98～62.15%; MgO 2.59～5.62%; CaF
237.24～72.31%; S 0.017～0.041%; Burn and lose 0.33～0.72%.
Described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
20.6%; Al
2O
320.06%; CaO 58.12%; MgO 3.8%; CaF
247.31; S 0.024; Burn and lose 0.42%.
A kind of making method of Premelted refining protective material for electroslag furnace may further comprise the steps:
A. measure qualified starting material by above-mentioned batching requirement;
B. in roaster, fully toasted on request 4 hours, and stir;
C. pour into to be warming up in the electric furnace about 1500 ℃ after stirring and be melt into liquid state, and stir once more;
D. pour into and cool in the mould to room temperature;
E. processing is broken into the granularity of requirement, the packing warehouse-in.
Concerning the electroslag pre-melted slag, stir after melting fully in electric furnace once more the even back of its material mixing, guarantees that composition is even fully.Pour out then in the cooling die, cool naturally, and in time be processed into the granularity of customer requirements, packing prevents the moisture absorption once more.The grade of its material therefor is many than the strictness of common pre-melted slag also, and S content＜0.05% of requirement is free from foreign meter.
Through to the understanding of production technique and exchanges,, design and join the slag scheme according to the use steel grade with the technician of steel mill.Through test Continuous Tracking 11 stoves, the stable nothing cutout of electroslag steel-making starting the arc phenomenon.In addition, slag charge is particulate state, and it is convenient to add in the reflow process, and the intact ESR ingot Chemical Composition of remelting is qualified, the conformance with standard requirement.
According to experimental result, Daye Iron And Steel Company thinks that my the electroslag fritting starting the arc of company's production is stable, and slag charge meets the requirements, and can satisfy the production requirement of 16 tons of gas shield electroslag furnaces of Daye Iron And Steel Company.And according to the trial state in early stage, designed ternary pre-melted slag, quaternary pre-melted slag, five yuan of pre-melted slags, the kind of production remove bearing steel: G20Cr2N14A GC4r15S1Mn etc.; Military project structure iron: 30CrMnSiA; Die steel: H13 series, D2,9Cr3Mo etc., also produced stainless steel.Its trial state is all more satisfactory.Now normally the supply of material is produced.
The electroslag furnace pre-melted slag of producing according to the present invention is through test, filled up domestic blank, can only be before having avoided from external this kind of import product, haulage time length and problem of ultra-high price, product per ton has reduced about 3000 yuan of costs, and economic benefit is considerable.And provide good auxiliary material product for China Iron And Steel Company produces ultra-clean steel, market outlook are boundless.
Embodiment
Embodiment one:
Described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
20.6%; Al
2O
320.06%; CaO 58.12%; MgO 3.8%; CaF
247.31%; S 0.024%; Burn and lose 0.42%.
Embodiment two:
Described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
21.15%; Al
2O
319.66%; CaO 58.95%; MgO 5.62%; CaF
247.64%; S 0.041%; Burn and lose 0.64%.
Embodiment three:
Described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
20.25%; Al
2O
314.01%; CaO 62.15%; MgO 2.59%; CaF
272.31%; S 0.017%; Burn and lose 0.33%.
Embodiment four:
Described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
21.35%; Al
2O
328.34%; CaO 53.98%; MgO 3.26%; CaF
237.24%; S 0.04%; Burn and lose 0.72%.
The making method of Premelted refining protective material for electroslag furnace described in above-mentioned four kinds of embodiment may further comprise the steps:
F. measure qualified starting material by above-mentioned batching requirement;
G. in roaster, fully toasted on request 4 hours, and stir;
H. pour into to be warming up in the electric furnace about 1500 ℃ after stirring and be melt into liquid state, and stir once more;
I. pour into and cool in the mould to room temperature;
J. processing is broken into the granularity of requirement, the packing warehouse-in.
Claims (2)
1. Premelted refining protective material for electroslag furnace, it is characterized in that: the composition and the weight percent of its batching are as follows, SiO
20.25～1.35%; Al
2O
314.01～28.34%; CaO 53.98～62.15%; MgO2.59～5.62%; CaF
237.24～72.31%; S 0.017～0.041%; Burn and lose 0.33～0.72%.
2. refining protecting materials as claimed in claim 1 is characterized in that: described Premelted refining protective material for electroslag furnace, the composition and the weight percent of its batching are as follows, SiO
20.6%; Al
2O
320.06%; CaO58.12%; MgO 3.8%; CaF
247.31; S 0.024; Burn and lose 0.42%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010030220A CN101775500A (en) | 2010-01-21 | 2010-01-21 | Premelted refining protective material for electroslag furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010030220A CN101775500A (en) | 2010-01-21 | 2010-01-21 | Premelted refining protective material for electroslag furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101775500A true CN101775500A (en) | 2010-07-14 |
Family
ID=42512085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010030220A Pending CN101775500A (en) | 2010-01-21 | 2010-01-21 | Premelted refining protective material for electroslag furnace |
Country Status (1)
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| CN (1) | CN101775500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965519A (en) * | 2012-11-22 | 2013-03-13 | 河南省西保冶材集团有限公司 | Carburizing bearing steel electroslag remelting casting powder |
| CN105714187A (en) * | 2016-04-11 | 2016-06-29 | 宝钢集团新疆八一钢铁有限公司 | Production method for 30CrMnSiA hot rolled steel strip |
| CN114149267A (en) * | 2021-11-18 | 2022-03-08 | 偏关县晋电化工有限责任公司 | Slag hole protection material for submerged arc furnace |
-
2010
- 2010-01-21 CN CN201010030220A patent/CN101775500A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965519A (en) * | 2012-11-22 | 2013-03-13 | 河南省西保冶材集团有限公司 | Carburizing bearing steel electroslag remelting casting powder |
| CN105714187A (en) * | 2016-04-11 | 2016-06-29 | 宝钢集团新疆八一钢铁有限公司 | Production method for 30CrMnSiA hot rolled steel strip |
| CN105714187B (en) * | 2016-04-11 | 2020-05-22 | 新疆八一钢铁股份有限公司 | Production method of 30CrMnSiA hot rolled steel strip |
| CN114149267A (en) * | 2021-11-18 | 2022-03-08 | 偏关县晋电化工有限责任公司 | Slag hole protection material for submerged arc furnace |
| CN114149267B (en) * | 2021-11-18 | 2023-05-05 | 偏关县晋电化工有限责任公司 | Slag hole protecting material for submerged arc furnace |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20100714 |