CN102041395A - Electroslag remelting arc initiator and arcing method thereof - Google Patents
Electroslag remelting arc initiator and arcing method thereof Download PDFInfo
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- CN102041395A CN102041395A CN 201010599689 CN201010599689A CN102041395A CN 102041395 A CN102041395 A CN 102041395A CN 201010599689 CN201010599689 CN 201010599689 CN 201010599689 A CN201010599689 A CN 201010599689A CN 102041395 A CN102041395 A CN 102041395A
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- electroslag remelting
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- remelting furnace
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Abstract
The invention relates to an electroslag remelting arc initiator and an arcing method thereof. The arc initiator is prepared from a waste graphite electrode which is crushed into particles weighed 80-140g; and during the arcing, an initial voltage in an electroslag remelting furnace is manually regulated to 25V and then gradually increased to 35V, a current is gradually increased from 0A to 5000A and automatic control is carried out after the current is stable. As the arc initiator is prepared from the waste graphite electrode and high-temperature melting is not required, and thus, the labor intensity and the raw material cost are greatly reduced and secondary pollution and energy waste are not caused.
Description
Technical field
The present invention relates to a kind of method of utilizing the esr striking agent of discarded electrode making and utilizing this striking agent starting the arc.
Background technology
Esr be water mold or in the resistance heat that produces when utilizing electric current to pass through slag with metal or alloy refuse and refining, and consecutive solidification becomes a kind of metallurgical method of ingot metal or foundry goods.TiO2 powder, CaF2 powder, CaO powder are adopted in tradition esr striking agent, and high melt forms after mixing.On the making method of this kind striking agent, because of it needs high melt, operations such as cooling fragmentation so its labour intensity is big, and can cause secondary pollution, and energy dissipation, cost of manufacture is higher simultaneously, according to statistics, makes this kind striking agent, raw materials cost and manufacturing cost are included, and per hundred kilograms of striking agent costs are more than 700 yuan; And from its raw material ingredient, because of traditional striking agent adopts the TiO2 powder as major ingredient, cause the content of Ti in the striking agent higher relatively, so the inapplicable smelting of this kind striking agent requires lower steel grade to Ti, another problem is, above-mentioned striking agent is because of material reason own, prolonged preservation inefficacy apt to deteriorate, and then cause the waste of resource.
In the prior art, a kind of improved striking agent is to be made of carbon dust and bifluoride calcium compounds, though this kind striking agent does not contain titanium elements, can be used for smelting low titanium steel kind, but, make this kind striking agent not reach desired effects because carbon dust and difluoro calcium mixing back bond properties are bad.In order to address the above problem, adopt glass oil as tackiness agent usually, with the adhesive property of increase carbon dust and bifluoride calcium compounds, but the cost of this kind striking agent is higher, and also is difficult for prolonged preservation.
In addition, when prior art was smelted steel at electroslag remelting furnace, its striking voltage was usually more than 55 volts, and this high striking voltage is difficult for making the manual starting the arc to transfer to automatic control steel-smelting, very easily produces the arc extinguishing phenomenon.
Summary of the invention
Task of the present invention provides a kind of depleted Graphite Electrodes that utilizes as esr striking agent, to solve the cost of manufacture height and can not smelt problems such as hanging down the titanium steel kind.
Another task of the present invention provides a kind of above-mentioned esr striking agent starting the arc method of utilizing.
Esr striking agent proposed by the invention is by the depleted Graphite Electrodes and it is broken into quality is that the particle of 80-140 gram constitutes.If the granular mass of Graphite Electrodes exerts an influence to striking less than 80 grams, if granular mass can make molten steel carburetting greater than 140 grams.
Utilize above-mentioned esr striking agent starting the arc method, may further comprise the steps: at first electroslag remelting furnace is put in the striking agent, with manual mode the starting voltage in the electroslag remelting furnace is adjusted to 25 volts then, and bring the voltage up to 35 volts gradually, electric current is elevated to 5 kiloamperes gradually from 0 ampere, treats to change automatic control over to after the current stabilization.
In the process of manual setting current/voltage operation, also comprise when manually seeing when in the electroslag remelting furnace arc light being arranged the step of adding slag in the electroslag remelting furnace.
What esr striking agent proposed by the invention was adopted is discarded Graphite Electrodes, and in the Graphite Electrodes mass content of carbon more than 95%, belong to refuse reclamation, this kind striking agent need not high melt, only need simple crushing, its labour intensity and raw materials cost reduce greatly, can not cause secondary pollution and energy dissipation, and inefficacy also undergoes no deterioration during prolonged preservation; And the composition of striking agent own is mainly carbon, can not cause molten steel component to pollute, and is applicable to and smelts the low steel grade of titaniferous amount.
Embodiment:
When producing the striking agent, at first the depleted Graphite Electrodes is broken into the particle that quality is the 80-140 gram with saw or other broken instrument with it, for having wedge angle or property at parts of edges and corners to polish processing in the Graphite Electrodes particle, promptly obtain esr striking agent.When utilizing this striking agent starting the arc, at first electroslag remelting furnace is put in the striking agent, with manual mode the starting voltage in the electroslag remelting furnace is adjusted to 25 volts then, and bring the voltage up to 35 volts gradually, electric current is elevated to 5 kiloamperes gradually from 0 ampere, and in the process of manual setting current/voltage operation, when in the operator sees electroslag remelting furnace, arc light being arranged, in electroslag remelting furnace, add slag at once, so that arc light is covered, and the voltage of working as manual shift is elevated to 35 volts, when electric current is elevated to 5 kiloamperes, changes automatic control over to.The automatic control system of existing electroslag remelting furnace generally is that employing is micro-processor controlled.Because the automatic control system of electroslag remelting furnace belongs to prior art, so, the concrete structure and the control scheme of automatic control system do not provided in the present embodiment.
Claims (3)
1. esr striking agent is characterized in that: this striking agent is by the depleted Graphite Electrodes and it is broken into quality is that the particle of 80-140 gram constitutes.
2. utilize the described esr striking of claim 1 agent starting the arc method, it is characterized in that may further comprise the steps: at first electroslag remelting furnace is put in the striking agent, with manual mode the starting voltage in the electroslag remelting furnace is adjusted to 25 volts then, and bring the voltage up to 35 volts gradually, electric current is elevated to 5 kiloamperes gradually from 0 ampere, treats to change automatic control over to after the current stabilization.
3. starting the arc method according to claim 2 is characterized in that: in the process of manual setting current/voltage operation, also comprise when manually seeing when in the electroslag remelting furnace arc light being arranged the step of adding slag in the electroslag remelting furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010599689 CN102041395A (en) | 2010-12-22 | 2010-12-22 | Electroslag remelting arc initiator and arcing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010599689 CN102041395A (en) | 2010-12-22 | 2010-12-22 | Electroslag remelting arc initiator and arcing method thereof |
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| CN102041395A true CN102041395A (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010599689 Pending CN102041395A (en) | 2010-12-22 | 2010-12-22 | Electroslag remelting arc initiator and arcing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851517A (en) * | 2012-08-28 | 2013-01-02 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| 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 |
| CN105695762A (en) * | 2016-04-08 | 2016-06-22 | 大冶特殊钢股份有限公司 | Solid slag ignition method applicable to electro-slag remelting |
| CN107338362A (en) * | 2017-06-27 | 2017-11-10 | 中原特钢股份有限公司 | A kind of electroslag novel conductive slag and preparation method thereof |
| CN113430392A (en) * | 2021-06-18 | 2021-09-24 | 山西太钢不锈钢股份有限公司 | Efficient arc striking method for large-end-face electrode blank for electroslag smelting |
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| US3666908A (en) * | 1971-03-31 | 1972-05-30 | Union Carbide Corp | Method for vertical welding of aluminum |
| CN2892353Y (en) * | 2006-04-19 | 2007-04-25 | 中国第一重型机械集团公司 | Smelting mouth type electroslag welding arc striking mouth |
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| CN201220325Y (en) * | 2008-06-02 | 2009-04-15 | 华升建设集团有限公司 | Reinforced bar electroslag pressure welding apparatus directly starting arc |
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2010
- 2010-12-22 CN CN 201010599689 patent/CN102041395A/en active Pending
Patent Citations (4)
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| US3666908A (en) * | 1971-03-31 | 1972-05-30 | Union Carbide Corp | Method for vertical welding of aluminum |
| CN2892353Y (en) * | 2006-04-19 | 2007-04-25 | 中国第一重型机械集团公司 | Smelting mouth type electroslag welding arc striking mouth |
| CN101260478A (en) * | 2008-04-17 | 2008-09-10 | 东北大学 | Method for smelting high-nitrogen steel by compression electroslag furnace |
| CN201220325Y (en) * | 2008-06-02 | 2009-04-15 | 华升建设集团有限公司 | Reinforced bar electroslag pressure welding apparatus directly starting arc |
Non-Patent Citations (1)
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| 《钢铁》 19661231 冶金工业部102厂二车间 滚珠轴承钢电渣重熔 第15页-第19页,第28页 1-3 , 第1期 2 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851517A (en) * | 2012-08-28 | 2013-01-02 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| CN102851517B (en) * | 2012-08-28 | 2014-03-12 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| 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 |
| CN105695762A (en) * | 2016-04-08 | 2016-06-22 | 大冶特殊钢股份有限公司 | Solid slag ignition method applicable to electro-slag remelting |
| CN105695762B (en) * | 2016-04-08 | 2018-05-04 | 大冶特殊钢股份有限公司 | A kind of solid slag suitable for electroslag remelting is ignited method |
| CN107338362A (en) * | 2017-06-27 | 2017-11-10 | 中原特钢股份有限公司 | A kind of electroslag novel conductive slag and preparation method thereof |
| CN113430392A (en) * | 2021-06-18 | 2021-09-24 | 山西太钢不锈钢股份有限公司 | Efficient arc striking method for large-end-face electrode blank for electroslag smelting |
| CN113430392B (en) * | 2021-06-18 | 2022-07-01 | 山西太钢不锈钢股份有限公司 | Efficient arc striking method for large-end-face electrode blank for electroslag smelting |
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Application publication date: 20110504 |