CN106244819B - A kind of striking agent of electroslag remelting and preparation method thereof - Google Patents
A kind of striking agent of electroslag remelting and preparation method thereof Download PDFInfo
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- CN106244819B CN106244819B CN201610722871.3A CN201610722871A CN106244819B CN 106244819 B CN106244819 B CN 106244819B CN 201610722871 A CN201610722871 A CN 201610722871A CN 106244819 B CN106244819 B CN 106244819B
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- powder
- tio
- caf
- striking agent
- electroslag remelting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
Abstract
The present invention proposes a kind of striking agent of electroslag remelting, its component and weight percent are: CaF2Powder: 60%~70%；Al2O3Powder: 20%~25%；TiO2Powder: 3~5%；Remaining is the metal fillings of steel grade of the same race.The production method that the present invention also proposes this striking agent.The striking agent of electroslag remelting of the invention uses CaF2‑TiO2‑Al2O3For basic system, and it is aided with metal fillings and is made according to specific component proportion, only needs tapping to be separable into bulk after cooling and shaping, and keep being not pulverized easily for a long time；The raw material of striking agent are through overbaking, then through fritting refining treatment, and moisture and oxidizable element are effectively removed in slag, improve the cleanliness of remelting steel；TiO is reduced in component2Ratio, the part steel grade high to leaded wastewater is also applicable, and due to not carbon containing in striking agent component, will not cause carburetting problem for carbon containing low steel grade.
Description
Technical field
The present invention relates to metal smelt technical field, in particular to the striking agent of a kind of electroslag remelting and the striking agent
Production method.
Background technique
Electroslag remelting is that also known as secondary remelting, most distinguishing feature are the pure metal of production, ingredient and even tissue, knot
Structure is fine and close, excellent product performance.Striking agent is also known as Conductive Slag, striking slag, its effect is to establish electroslag ignition Process.Tradition is drawn
Arc agent uses CaF2Powder, TiO2The high melt after certain ratio mixing such as powder forms, and such striking agent is due to containing TiO2,
The steel grade of remelting leaded wastewater is also easy to produce TiN field trash, is unfavorable for product quality；Also the striking agent having is auxiliary using graphite and Fluorspar Powder
When being mixed with bath of glass, but carrying out electroslag remelting for the steel grade of low carbon content, since striking agent phosphorus content is high, Yi Zao
It is exceeded at ESR ingot low power carbon content and scrap.
Need to have following condition as striking agent: 1) there is certain electric conductivity, the easy starting the arc；2) have lower fusing point and
Viscosity, low fusing point are conducive to the quick formation in molten bath, and lower viscosity can make ESR ingot bottom surface smooth；3) have and relatively close
Suitable structure, melting material after cooling are not pulverized easily, and keep block structure, are convenient for striking.Three above condition and striking agent
Component and proportion it is closely bound up, but in the production and production of striking agent, due to usually ignoring each component and proportion, production
Striking agent quality it is irregular, striking is ineffective, generates a large amount of waste products, more have part striking agent due to proportion component do not conform to
It is suitable, component crystal transfer occurs in the cooling shattering process of striking agent, it is serious to lead to occur dusting, it cannot keep for a long time, and
It is not available.
Summary of the invention
The striking agent in existing application there are aiming at the problem that and use demand, the object of the present invention is to provide a kind of spies
Determine the easy starting the arc of component and proportion, low melting point, the striking agent material and its production of low viscosity and the electroslag remelting being not pulverized easily
Method.
To achieve the object of the present invention, the ingredient and weight percent of a kind of striking agent of electroslag remelting of the invention
Are as follows: CaF2Powder: 60%~70%；Al2O3Powder: 20%~25%；TiO2Powder: 3~5%；Remaining is the metal fillings of steel grade of the same race；Wherein,
TiO2TiO in powder2Weight percent content >=95%, granularity be≤100 mesh；CaF2CaF in powder2Weight percent content >=
95%, granularity is≤100 mesh； Al2O3Al in powder2O3Weight percent content >=95%, granularity be≤100 mesh；Metal fillings is
Without greasy dirt, dried over anhydrous electroslag remelting with the turning scrap of steel grade, length and width are all not more than 20mm.
Another object according to the present invention, a kind of production method of the striking agent of electroslag remelting of the invention include as follows
Step:
S1: will be by the TiO of requirements above proportion2Powder, Al2O3Powder, CaF2It is several that powder weighs weight, is put into oven, keeps the temperature
Toast 2h or more；
S2: being added melting in electroslag slugging furnace or electroslag furnace for the slag charge after baking in batches, first plus CaF2Powder, to CaF2
All add TiO again when melting2Powder, Al2O3The homogeneous mixture of powder and metal fillings, is added portionwise, and each additional amount is total weight
10-20% is repeatedly uniformly added into；
S3: melting current control 1000-3000A, voltage 45-55V are refined again after slag charge is in completely molten condition
10-20min；And
S4: static cooling after the completion of to be refined then takes out broken cooling, and tapping is broken for bulk, dry to keep.
The striking agent of electroslag remelting of the invention uses CaF2-TiO2-Al2O3For basic system, and be aided with metal fillings by
It is made according to specific component proportion, only needs tapping to be separable into bulk after cooling and shaping, and keep being not pulverized easily for a long time；
The raw material of striking agent are through overbaking, then through fritting refining treatment, and moisture and oxidizable element are effectively removed in slag, improve
The cleanliness of remelting steel；TiO is reduced in component2Ratio, the part steel grade high to leaded wastewater is also applicable, and due to striking
It is not carbon containing in agent component, carburetting problem will not be caused for carbon containing low steel grade.
Detailed description of the invention
Through the following detailed description taken in conjunction with the accompanying drawings, present invention objects, features and advantages above-mentioned and other will become
Obviously.Wherein:
Fig. 1 show the process sequence diagram of the production method of the striking agent of electroslag remelting of the invention.
Specific embodiment
The process sequence diagram of the production method of the striking agent of electroslag remelting of the invention shown in referring to Fig.1, and combine
The features of the present invention is described in detail in specific embodiment and advantage is as follows.
Embodiment one: the 100Kg striking agent material of electroslag remelting is manufactured
1, slag charge is weighed: according to TiO2: Al2O3: CaF2: metal fillings=5:25:65:5 mass percent carries out weighing and burden,
TiO2Powder 5Kg, Al2O3Powder 25Kg, CaF25Kg is considered in powder 65Kg, the metal turning with steel grade to be worth doing；
2, by weighted TiO2Powder, Al2O3Powder, CaF2Powder is put into 400 DEG C of ovens, afterheat baking 3h；
3, melting in electroslag slugging furnace or electroslag furnace, initial current 1000A, voltage is added in the powder after baking in batches
45V, first plus CaF2Powder, to CaF2All add TiO again when melting2Powder, Al2O3The mixture of powder and metal fillings, is added portionwise, every time
Additional amount is the 15% of total weight, is repeatedly uniformly added into；
4, electric current is gradually increased to 3000A, and voltage increases to 52V, and Current Voltage value is kept to continue again after melting completely
Refine 20min；
5, after standing cooling 30min, start to demould, the striking agent after tapping demoulding taps into kept dry after bulk, draws
Completion is manufactured in arc agent.
Embodiment two: the 50Kg striking agent material of electroslag remelting is manufactured
1, slag charge is weighed: according to TiO2: Al2O3: CaF2: metal fillings=5:20:70:5 mass percent carries out weighing and burden,
TiO2Powder 2.5Kg, Al2O3Powder 10Kg, CaF22.5Kg is considered in powder 35Kg, the metal turning with steel grade to be worth doing；
2, by the above weighted TiO2Powder, Al2O3Powder, CaF2Powder is put into 400 DEG C of ovens, afterheat baking 4h；
3, melting in electroslag slugging furnace or electroslag furnace, initial current 1000A, voltage is added in the slag charge after baking in batches
50V, first plus CaF2Powder, to CaF2All add TiO again when melting2Powder, Al2O3The mixture of powder and metal fillings, is added portionwise, every time
Additional amount is the 20% of total weight, is uniformly added into several times；
4, electric current is gradually increased to 3000A, and voltage increases to 55V, and Current Voltage value is kept to continue again after melting completely
Refine 10min；
5, after standing cooling, start to demould, the striking agent after tapping demoulding is tapped into kept dry after bulk, striking agent
Manufacture completion.
The striking agent of electroslag remelting of the invention uses CaF2-TiO2-Al2O3For basic system, and be aided with metal fillings by
It is made according to specific component proportion, is had the advantage that 1) due to being aided with metal fillings, after cooling and shaping only compared with traditional striking agent
It needs to touch, that is, is separable into bulk, keep also being not pulverized easily for a long time；2) in the fabrication process, raw material pass through for this striking agent
Baking processing, then through fritting refining treatment, moisture and oxidizable element are effectively removed in slag, improve the cleaning of remelting steel
Degree；3) TiO is reduced in component2Ratio, the part steel grade high to leaded wastewater is also applicable, and due to being free of in striking agent component
Carbon will not cause carburetting problem for carbon containing low steel grade.
The present invention is not limited to the described embodiments, and those skilled in the art is not departing from spirit of the invention i.e. public affairs
Open in range, still may make some modifications or changes, thus the range that is limited with claims of the scope of the present invention as
It is quasi-.
Claims (2)
1. a kind of striking agent of electroslag remelting, which is characterized in that the component and weight percent of the striking agent are as follows: CaF2Powder:
60%~70%；Al2O3Powder: 20%~25%；TiO2Powder: 3~5%；Remaining is the metal fillings of steel grade of the same race；Wherein, TiO2TiO in powder2
Weight percent content >=95%, granularity be≤100 mesh；CaF2CaF in powder2Weight percent content >=95%, granularity be≤
100 mesh； Al2O3Al in powder2O3Weight percent content >=95%, granularity be≤100 mesh；Metal fillings is no greasy dirt, anhydrous
For dry electroslag remelting with the turning scrap of steel grade, length and width are all not more than 20mm.
2. a kind of production method of the striking agent of electroslag remelting, which is characterized in that the production method includes the following steps:
S1: by the TiO of the proportion according to claim 12Powder, Al2O3Powder, CaF2It is several that powder weighs weight, is put into oven, and heat preservation is dried
Roasting 2h or more；
S2: being added melting in electroslag slugging furnace or electroslag furnace for the slag charge after baking in batches, first plus CaF2Powder, to CaF2All
Add TiO when melting again2Powder, Al2O3The homogeneous mixture of powder and metal fillings, is added portionwise, and each additional amount is the 10- of total weight
20%, repeatedly it is uniformly added into；
S3: melting current control 1000-3000A, voltage 45-55V refine 10- after slag charge is in completely molten condition again
20min；And
S4: static cooling after the completion of to be refined then takes out broken cooling, and tapping is broken for bulk, dry to keep.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610722871.3A CN106244819B (en) | 2016-08-25 | 2016-08-25 | A kind of striking agent of electroslag remelting and preparation method thereof |
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| CN201610722871.3A CN106244819B (en) | 2016-08-25 | 2016-08-25 | A kind of striking agent of electroslag remelting and preparation method thereof |
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| CN106244819B true CN106244819B (en) | 2018-12-28 |
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| CN109487091B (en) * | 2019-01-11 | 2020-09-22 | 辽宁科技大学 | Electroslag remelting arc striking agent and preparation method thereof |
| CN114410976A (en) * | 2021-12-15 | 2022-04-29 | 洛阳中重铸锻有限责任公司 | Low-frequency electroslag remelting arc striking agent and preparation method thereof |
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| JPH09241767A (en) * | 1996-03-08 | 1997-09-16 | Hitachi Metals Ltd | Consumable electrode type remelting method for superalloy |
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| JP2013049908A (en) * | 2011-08-31 | 2013-03-14 | Jfe Steel Corp | Method for producing high-purity steel by electroslag remelting method |
| CN104152710A (en) * | 2014-08-28 | 2014-11-19 | 攀钢集团成都钢钒有限公司 | Refining slag for electroslag remelting, and smelting method and application of refining slag |
| CN104726721A (en) * | 2015-02-13 | 2015-06-24 | 中钢集团邢台机械轧辊有限公司 | Electroslag ignition agent and preparation method thereof |
| CN105274350A (en) * | 2015-10-29 | 2016-01-27 | 中国兵器科学研究院宁波分院 | Electroslag remelting arc initiating agent, device for preparing electroslag remelting arc initiating agent and using method of device for preparing electroslag remelting arc initiating agent |
| CN105463200A (en) * | 2016-01-13 | 2016-04-06 | 内蒙古北方重工业集团有限公司 | Arc striking agent for electroslag remelting and arc striking method |
| CN105734302A (en) * | 2016-04-29 | 2016-07-06 | 重庆钢铁(集团)有限责任公司 | GH4169 alloy steel electroslag remelting refining slag and method for performing electroslag re-melting on GH4169 alloy steel |
-
2016
- 2016-08-25 CN CN201610722871.3A patent/CN106244819B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09241767A (en) * | 1996-03-08 | 1997-09-16 | Hitachi Metals Ltd | Consumable electrode type remelting method for superalloy |
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| JP2013049908A (en) * | 2011-08-31 | 2013-03-14 | Jfe Steel Corp | Method for producing high-purity steel by electroslag remelting method |
| CN104152710A (en) * | 2014-08-28 | 2014-11-19 | 攀钢集团成都钢钒有限公司 | Refining slag for electroslag remelting, and smelting method and application of refining slag |
| CN104726721A (en) * | 2015-02-13 | 2015-06-24 | 中钢集团邢台机械轧辊有限公司 | Electroslag ignition agent and preparation method thereof |
| CN105274350A (en) * | 2015-10-29 | 2016-01-27 | 中国兵器科学研究院宁波分院 | Electroslag remelting arc initiating agent, device for preparing electroslag remelting arc initiating agent and using method of device for preparing electroslag remelting arc initiating agent |
| CN105463200A (en) * | 2016-01-13 | 2016-04-06 | 内蒙古北方重工业集团有限公司 | Arc striking agent for electroslag remelting and arc striking method |
| CN105734302A (en) * | 2016-04-29 | 2016-07-06 | 重庆钢铁(集团)有限责任公司 | GH4169 alloy steel electroslag remelting refining slag and method for performing electroslag re-melting on GH4169 alloy steel |
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Address after: 225722 1 Dongxing South Road, Zhang Guo Town, Xinghua City, Taizhou, Jiangsu Patentee after: Jiangsu Shen Yuan Group Co., Ltd. Address before: 225722 Zhang Guozhen, Xinghua City, Taizhou, Jiangsu Patentee before: Jiangsu Shenyuan Special Steel Co., Ltd. |
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