CN103572003A - Circulating tube for lower groove of vacuum refining furnace - Google Patents
Circulating tube for lower groove of vacuum refining furnace Download PDFInfo
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- CN103572003A CN103572003A CN201310417555.1A CN201310417555A CN103572003A CN 103572003 A CN103572003 A CN 103572003A CN 201310417555 A CN201310417555 A CN 201310417555A CN 103572003 A CN103572003 A CN 103572003A
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- circulating tube
- circulating pipe
- refining furnace
- circulating
- vacuum refining
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Abstract
The invention discloses a circulating tube for a lower groove of a vacuum refining furnace. The circulating tube comprises a rising circulating tube and a falling circulating tube, wherein the rising circulating tube and the falling circulating tube are constructed by circulating bricks. The circulating tube further comprises two grooves arranged on one side of the falling circulating tube, wehrein an included angle between the center lines of the two grooves is 60 degrees. The circulating tube has the following beneficial effects: a traditional circulating tube is optimized, two circulating bricks for constructing the falling circulating tube are shortened by 20mm, and the residual molten steel flows out through a gap of the groove, in this way, the residual molten steel accumulation problem is solved. The circulating tube has the advantages of simple structure, convenience in machining and preferable using effect.
Description
Technical field
The present invention relates to a kind of vacuum refining furnace, especially relate to a kind of vacuum refining furnace lower channel circulating pipe.
Background technology
RH vacuum refining furnace is the state-of-the-art refining unit of present steel industry, also be the essential equipment of smelting ultralow-carbon high value added product, it has become the main flow refining configuration of Ge great steel mill, according to statistics, ended for the end of the year 2012, domestic RH refining furnace surpasses 120, and former widely used VD refining furnace, VOD refining furnace, AOD stove etc. are eliminated by RH refining furnace gradually.But the fast development along with RH refining furnace technology, some defects of RH refining furnace self also come out gradually, and be accompanied by the different working conditions of each steel mill, the problem that RH stove exposes is also different, modal be also the most general be mainly the life-span problem on the low side of resistance to material, especially RH stove lower channel and soaking tub need to constantly be faced washing away of high-temperature molten steel, the resistance to material life-span is influenced larger, how to improve resistance to material amount, optimization is built by laying bricks or stones, production technique, improve the resistance to material life-span, reduce the cost of resistance to material, become the major subjects of each steel mill's tackling key problem of having greatly RH refining furnace.
The Jinan 120t of steel plate factory converter district 1#150t RH refining furnace is gone into operation in September, 2007, the resistance to material life-span at operation initial stage is always not high, updating since going into operation, existing significantly improvement at present, but the soaking tub life-span is on average less than 1700min, the lower channel life-span is on average less than 3500min, compares that all still there is a big difference with advanced international level.Reason that the soaking tub life-span is on the low side is unstable due to supply of material producer quality on the one hand, on the other hand due to the special product structure of this steel plate factory and production model, the soaking tub life-span has also been produced to certain influence.Major cause that the lower channel life-span is on the low side is original design unreasonable, lower channel near rising circulating pipe and decline circulating pipe both sides body of wall because steel stream impulse force is larger, respective erosion is more serious, and molten steel enters in circulating pipe and body of wall brickwork joint from here, very easily causes the steel accident of wearing.For reducing the cost of resistance to material, improve the lower channel life-span, avoid occurring wearing steel accident, after each soaking tub rolled off the production line to the life-span, need to mend by replacing a damaged part the serious part of lower channel circulating pipe body of wall erosion around, while mending by replacing a damaged part, waste a large amount of body of wall refractory brick, and consume a large amount of human costs.
Summary of the invention
The object of the invention is to overcome the shortcoming existing in prior art, the Novel circulating pipe of a kind of RH of being arranged on vacuum oven bottom is provided, the technical scheme adopting is: a kind of vacuum refining furnace lower channel circulating pipe, comprise rising circulating pipe and decline circulating pipe, described rising circulating pipe and decline circulating pipe are formed by circulation brick masonry, it is characterized in that: described circulating pipe also comprises two grooves that are located at described decline circulating pipe one side, between described two groove medullary rays, angle is 60 degree.
Technical characterictic of the present invention also has: described groove is formed by the breach of processing on described circulation brick.
Technical characterictic of the present invention also has: described breach radial direction is of a size of 20mm.
Beneficial effect of the present invention is: this circulating pipe is optimized design to traditional circulating pipe, and two circulation bricks of building decline circulating pipe by laying bricks or stones are shortened to 20mm, and residual molten steel is flowed out by this groove breach, thereby solved residual molten steel, overstocks problem.The advantage that the present invention has is simple in structure, processing convenient, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is structural front view of the present invention, and wherein 1 is decline circulating pipe, the 2nd, and circulation brick, the 3rd, groove, the 4th, rising circulating pipe, the 5th, base channel.
embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.This vacuum refining furnace lower channel comprises rising circulating pipe 4, decline circulating pipe 1 and groove 3 with circulating pipe, rising circulating pipe 4, decline circulating pipe 1 are built by laying bricks or stones and are formed by circulation brick 2, the groove 3 forming is 2, is positioned at a side of decline circulating pipe 1, and between 2 grooves 3, angle is 60 degree.
In order to reduce costs, this groove 3 is shortened and is formed by circulation brick, and through overtesting, the radial dimension of shortening is 20mm.Each molten steel retaining while finishing of producing flows out from groove 3, thereby has avoided the deposition of residual molten steel.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited only to above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also belong to protection scope of the present invention.
Claims (3)
1. a vacuum refining furnace lower channel circulating pipe, comprise rising circulating pipe and decline circulating pipe, described rising circulating pipe and decline circulating pipe are formed by circulation brick masonry, it is characterized in that: described circulating pipe also comprises two grooves that are located at described decline circulating pipe one side, between described two groove medullary rays, angle is 60 degree.
2. according to vacuum refining furnace lower channel circulating pipe claimed in claim 1, it is characterized in that: described groove is formed by the breach of processing on described circulation brick.
3. according to vacuum refining furnace lower channel circulating pipe claimed in claim 2, it is characterized in that: described breach radial direction is of a size of 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417555.1A CN103572003B (en) | 2013-09-14 | 2013-09-14 | A kind of vacuum refining furnace lower channel circulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417555.1A CN103572003B (en) | 2013-09-14 | 2013-09-14 | A kind of vacuum refining furnace lower channel circulating pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103572003A true CN103572003A (en) | 2014-02-12 |
| CN103572003B CN103572003B (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310417555.1A Expired - Fee Related CN103572003B (en) | 2013-09-14 | 2013-09-14 | A kind of vacuum refining furnace lower channel circulating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103572003B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202119259U (en) * | 2011-06-28 | 2012-01-18 | 宜兴市诺明高温耐火材料有限公司 | Circulation pipe lining for refining steel furnace |
| CN102601352A (en) * | 2011-12-22 | 2012-07-25 | 中信重工机械股份有限公司 | Bottom slide brick of sliding mechanism for casting of steel casting mould |
| CN203546073U (en) * | 2013-09-14 | 2014-04-16 | 济钢集团有限公司 | Circulating tube for lower groove of vacuum finery furnace |
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2013
- 2013-09-14 CN CN201310417555.1A patent/CN103572003B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202119259U (en) * | 2011-06-28 | 2012-01-18 | 宜兴市诺明高温耐火材料有限公司 | Circulation pipe lining for refining steel furnace |
| CN102601352A (en) * | 2011-12-22 | 2012-07-25 | 中信重工机械股份有限公司 | Bottom slide brick of sliding mechanism for casting of steel casting mould |
| CN203546073U (en) * | 2013-09-14 | 2014-04-16 | 济钢集团有限公司 | Circulating tube for lower groove of vacuum finery furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103572003B (en) | 2016-03-16 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160316 Termination date: 20180914 |