CN106987726B - The method of electroslag remelting cold start-up - Google Patents
The method of electroslag remelting cold start-up Download PDFInfo
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- CN106987726B CN106987726B CN201710132954.1A CN201710132954A CN106987726B CN 106987726 B CN106987726 B CN 106987726B CN 201710132954 A CN201710132954 A CN 201710132954A CN 106987726 B CN106987726 B CN 106987726B
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- starting
- cold start
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- striking agent
- striking
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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 invention discloses a kind of methods of electroslag remelting cold start-up, belong to metallurgical technology field, including production column striking agent, and striking agent height is 100~130mm, and diameter is 80~120mm；It is cold-started, after cold start-up, starting starting current is 12000~16000A, and starting starting voltage is 70~80 volts, realizes that steady cold start-up, striking agent include the Fluorspar Powder and graphite electrode powder that weight ratio is 0.8:1~1.2:1, the two preferred weight ratio is 1:1.ESR ingot stable product quality of the present invention, cheap, furnace price is only 40 yuan, and furnace reduces by 3600 yuan of smelting cost, is calculated according to 13 tons of furnace, and ton reduces by 277 yuan of cost, and productivity effect is significantly improved.
Description
Technical field
The present invention relates to a kind of methods of electroslag remelting cold start-up, belong to metallurgical technology field.
Background technique
Originally cold start-up is needed using steel cuttings, and steel cuttings usage amount is larger, up to 100 kilograms, since steel cuttings price is higher
(40000 yuan/ton), in order to reduce cold start-up cost, it is necessary to develop a kind of new cold start-up method, with meet it is energy-saving, mention
The target of high productivity effect.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of methods of electroslag remelting cold start-up, to meet energy conservation drop
Consumption, the target for improving productivity effect.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of method of electroslag remelting cold start-up, is started, starting step using striking agent are as follows:
Step A, column striking agent is made, striking agent height is 100~130mm, and diameter is 80~120mm；
Step B, it is cold-started, after cold start-up, starting starting current is 12000~16000A, and starting starting voltage is
70~80 volts, realize steady cold start-up.
Technical solution of the present invention further improvement lies in that: striking agent includes Fluorspar Powder and graphite electrode powder, Fluorspar Powder and
The weight ratio of graphite electrode powder is 0.8:1~1.2:1, and striking agent is column.
Technical solution of the present invention further improvement lies in that: striking agent height be 110mm, diameter 100mm, Fluorspar Powder and
The weight ratio of graphite electrode powder is 1:1, granularity≤200 mesh of graphite electrode powder.
Technical solution of the present invention further improvement lies in that: starting starting current be 14000A, starting starting voltage be 75
Volt.
Technical solution of the present invention further improvement lies in that: the process being cold-started in step B are as follows: if starting box on place
Slag charge, the contacting ignition arc agent of consutrode bottom are placed in dry striking agent, striking agent centre, and voltage passes through consutrode contacting ignition arc
The slag charge between striking agent is melted in agent, striking agent arcing, reaches the cold start-up of slag charge fusing.
Technical solution of the present invention further improvement lies in that: striking agent usage amount be 3~8 pieces.
Technical solution of the present invention further improvement lies in that: striking agent be arranged circumferentially in starting box on.
By adopting the above-described technical solution, the technological progress achieved by the present invention is: at present using homemade striking agent into
Row cold start-up, cheap, furnace price is only 40 yuan, furnace reduce by 3600 yuan of smelting cost, ton reduce by 277 yuan of cost (according to
13 tons of furnace calculating), while the ESR ingot stable product quality produced, productivity effect are significantly improved.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
A kind of method of electroslag remelting cold start-up, is started, starting step using striking agent are as follows:
Step A, column striking agent is made, striking agent height is 100~130mm, and diameter is 80~120mm；
Step B, it is cold-started, after cold start-up, starting starting current is 12000~16000A, and starting starting voltage is
70~80 volts, realize steady cold start-up.
Striking agent includes Fluorspar Powder and graphite electrode powder, and the weight ratio of Fluorspar Powder and graphite electrode powder is 0.8:1~1.2:
1, if the weight ratio of Fluorspar Powder and graphite electrode powder can be 0.9:1 or 1.1:1, striking agent is column.
Striking agent height is 110mm, diameter 100mm, and the weight ratio of Fluorspar Powder and graphite electrode powder is 1:1, graphite electricity
The granularity of pole powder≤200 mesh, granularity are the smaller the better.
Originating starting current is preferably 14000A, and starting starting voltage is preferably 75 volts, and starting effect is preferable.
The process being cold-started in step B is by taking 15 tons of electroslag furnaces as an example:
Column is placed on the bottom water case of electroslag furnace and starts box, and the high 100mm of starting box, basal diameter 800mm are starting
Circumferential at the diameter 500mm of box to place the good striking agent of 3~4 pieces of processing and fabricatings, striking agent is put in starting box circumferencial direction respectively
It sets, slag charge is placed among striking agent.The contacting ignition arc agent of consutrode bottom, voltage pass through the agent of consutrode contacting ignition arc, striking
The slag charge between striking agent is melted in agent arcing, achievees the purpose that slag charge melts.
Striking agent usage amount is 3~8 pieces, such as 5 pieces, 6 pieces, 7 pieces, 8 pieces can be used, and is adjusted as the case may be.
Claims (3)
1. a kind of method of electroslag remelting cold start-up, it is characterised in that: started using striking agent, starting step are as follows:
Step A, column striking agent is made, striking agent height is 100~130mm, and diameter is 80~120mm；
Step B, be cold-started, after cold start-up, starting starting current be 12000~16000A, starting starting voltage be 70~
80 volts, realize steady cold start-up；
Striking agent includes Fluorspar Powder and graphite electrode powder, and the weight ratio of Fluorspar Powder and graphite electrode powder is 0.8:1~1.2:1, is drawn
Arc agent is column；The process being cold-started in step B are as follows: several striking agent are placed on starting box, place slag charge among striking agent,
The contacting ignition arc agent of consutrode bottom, voltage are melted between striking agent by the agent of consutrode contacting ignition arc, striking agent arcing
Slag charge reaches the cold start-up of slag charge fusing；Striking agent usage amount is 3~8 pieces；Striking agent is arranged circumferentially on starting box.
2. the method for electroslag remelting cold start-up according to claim 1, it is characterised in that: striking agent height is 110mm, directly
Diameter is 100mm, and the weight ratio of Fluorspar Powder and graphite electrode powder is 1:1, granularity≤200 mesh of graphite electrode powder.
3. the method for electroslag remelting cold start-up according to claim 2, it is characterised in that: originating starting current is
14000A, starting starting voltage is 75 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132954.1A CN106987726B (en) | 2017-03-08 | 2017-03-08 | The method of electroslag remelting cold start-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132954.1A CN106987726B (en) | 2017-03-08 | 2017-03-08 | The method of electroslag remelting cold start-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106987726A CN106987726A (en) | 2017-07-28 |
| CN106987726B true CN106987726B (en) | 2019-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710132954.1A Active CN106987726B (en) | 2017-03-08 | 2017-03-08 | The method of electroslag remelting cold start-up |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745831B (en) * | 2013-12-30 | 2017-12-01 | 大冶特殊钢股份有限公司 | A kind of carbonaceous Conductive Slag of electroslag steel smelting |
| CN104451178B (en) * | 2014-12-22 | 2016-08-17 | 重庆材料研究院有限公司 | Large scale, super clean, the electro-slag re-melting method of high-performance nickel-base alloy 690 |
| 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 |
| 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 |
| CN106011371B (en) * | 2016-06-24 | 2018-06-22 | 东北大学 | A kind of method of pressurize sensing and pressurization electroslag remelting duplex smelting high-nitrogen steel |
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2017
- 2017-03-08 CN CN201710132954.1A patent/CN106987726B/en active Active
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| CN106987726A (en) | 2017-07-28 |
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