CN101457279A - Method for improving RH vacuum furnace bottom groove life - Google Patents
Method for improving RH vacuum furnace bottom groove life Download PDFInfo
- Publication number
- CN101457279A CN101457279A CNA2007101589780A CN200710158978A CN101457279A CN 101457279 A CN101457279 A CN 101457279A CN A2007101589780 A CNA2007101589780 A CN A2007101589780A CN 200710158978 A CN200710158978 A CN 200710158978A CN 101457279 A CN101457279 A CN 101457279A
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- blowing system
- argon blowing
- service life
- vacuum furnace
- bottom tank
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Abstract
The invention provides a method for prolonging the service life of a bottom tank of an RH vacuum furnace. The method is characterized in that: the opposite side of an argon blowing system of a vacuum chamber is added with an argon blowing system, the position of a riser and the position of a downcomer are exchanged when a new varnished tube is mounted, and an argon tube of the riser is connected to the newly added argon blowing system. The method helps realize the alternate use of a circulation tube at the ascending side and a circulation tube at the descending side of the bottom tank by exchanging the position of the riser and the position of the downcomer, thus avoiding that the circulation tube at one side always bears the intense scouring of the raising steel flow, effectively prolonging the service life of the circulation tubes, and further prolonging the service life of the bottom tank. The method has obvious effect and can help improve the average service life of the bottom tank by more than one fold.
Description
Technical field
The invention belongs to the steelmaking equipment technical field, relate in particular to a kind of RH vacuum refinement equipment.
Background technology
RH vacuum furnace bottom groove circulating pipe is the comparatively abominable position of smelting condition, and the erosion of existing slag has the circulation of high-temperature molten steel to wash away and the washing away of Oxygen Flow thigh again, makes its maintenance frequent, and the life-span is shorter, and is very big to effective influence on system operation of RH vacuum oven.And, can not change circulating pipe separately in the design of RH base channel, often only change whole base channel because of the circulation pipe fracture, cause the waste of a large amount of refractory materialss.So, the problem that has become to need badly solution work-ing life of raising base channel.
Summary of the invention
For RH vacuum furnace bottom groove in the solution prior art is low work-ing life, keep in repair frequent problem, the invention provides a kind of method that can effectively improve the RH vacuum furnace bottom groove life.
The method that the present invention improves the RH vacuum furnace bottom groove life is achieved in that the offside in the vacuum chamber argon blowing system, also be that soaking tub downtake one side is set up a cover argon blowing system, when after soaking tub reaches work-ing life, more renewing pipe, exchange the position of upcast and downtake, and the argon gas pipeline of upcast is inserted the argon blowing system of newly establishing.
The present invention according to the erosion condition of base channel circulating pipe, also to the processing of tiing a knot of base channel circulating pipe, helps further to improve the work-ing life of base channel circulating pipe in case of necessity like this before more renewing soaking tub.
By research, find most because the erosion of base channel upthrow side circulating pipe refractory brick seriously causes to the maintenance base channel that rolls off the production line.Major cause is that RH vacuum oven vacuum chamber adopts one-sided argon blowing system, because washing away that the molten steel motion produces is very strong, the souring of waste gas increases along with the employing of additional gas simultaneously, cause base channel upthrow side circulating pipe always to be subjected to more violent washing away relatively, refractory brick corrodes serious, thereby has influenced the work-ing life of whole base channel.
The present invention is by the position of exchange upcast and downtake, realized that the circulating pipe of base channel upthrow side and the circulating pipe of decline side are used alternatingly, always avoided bearing acutely washing away of rising steel stream and gas by the circulating pipe of a side, effectively improved the work-ing life of circulating pipe, and then the work-ing life of also just having improved base channel, guaranteed the production direct motion.Adopt the inventive method effect obvious, base channel is enhanced about more than once mean life.
Description of drawings
Fig. 1 is the improvement synoptic diagram of RH vacuum oven argon blowing system of the present invention.
Embodiment
The invention will be further described by embodiment with reference to the accompanying drawings.
, also be that a side of soaking tub downtake 1 is set up a cover argon blowing system 6 at first at the offside of RH vacuum oven vacuum chamber 4 one-sided argon blowing system 5.When soaking tub reaches work-ing life, vacuum chamber 4 need roll off the production line when reorganizing and outfit, and soaking tub upcast 2 and downtake 1 are unloaded, to circulating pipe 3 tie a knot handle after, downtake 1 is installed in position at former upcast 2, installs riser 2 in the position of former downtake 1, and both positions are exchanged.Argon gas with upcast 2 inserts the argon blowing system of newly establishing 6 then, finishes to change, and just can continue to use.In the work-ing life of adopting this kind method can effectively improve base channel, mean lifetime is brought up to nearly 300 times by original more than 100 time.
Claims (2)
1. method that improves the RH vacuum furnace bottom groove life, it is characterized in that offside in the vacuum chamber argon blowing system, also be that soaking tub downtake one side is set up a cover argon blowing system, when the soaking tub that more renews, exchange the position of upcast and downtake, and the argon gas pipeline of upcast is inserted the argon blowing system of newly establishing.
2. the method for raising according to claim 1 RH vacuum furnace bottom groove life is characterized in that before more renewing soaking tub, to the processing of tiing a knot of base channel circulating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101589780A CN101457279A (en) | 2007-12-12 | 2007-12-12 | Method for improving RH vacuum furnace bottom groove life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101589780A CN101457279A (en) | 2007-12-12 | 2007-12-12 | Method for improving RH vacuum furnace bottom groove life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101457279A true CN101457279A (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101589780A Pending CN101457279A (en) | 2007-12-12 | 2007-12-12 | Method for improving RH vacuum furnace bottom groove life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101457279A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297594A (en) * | 2011-07-19 | 2011-12-28 | 河北钢铁股份有限公司唐山分公司 | Masonry method of RH refining furnace capable of reducing consumption of refractory materials |
| CN102954693A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Method for constructing bottom groove circulating pipe of vacuum-circulating degassing furnace |
| CN103421931A (en) * | 2013-09-14 | 2013-12-04 | 济钢集团有限公司 | Vacuum refining furnace lower groove with long service life |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| CN106435094A (en) * | 2016-12-08 | 2017-02-22 | 中冶京诚工程技术有限公司 | RH method vacuum tank with lifting gas pipeline and arrangement method of lifting gas pipeline thereof |
| CN109837362A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of effectively slowing down the deformation of RH vacuum tank groove body |
| CN110106315A (en) * | 2019-04-01 | 2019-08-09 | 山东钢铁集团日照有限公司 | A kind of method of the control of RH vacuum tank long-life |
-
2007
- 2007-12-12 CN CNA2007101589780A patent/CN101457279A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297594A (en) * | 2011-07-19 | 2011-12-28 | 河北钢铁股份有限公司唐山分公司 | Masonry method of RH refining furnace capable of reducing consumption of refractory materials |
| CN102954693A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Method for constructing bottom groove circulating pipe of vacuum-circulating degassing furnace |
| CN102954693B (en) * | 2011-08-20 | 2014-04-02 | 鞍钢股份有限公司 | Method for constructing bottom groove circulating pipe of vacuum-circulating degassing furnace |
| CN103421931A (en) * | 2013-09-14 | 2013-12-04 | 济钢集团有限公司 | Vacuum refining furnace lower groove with long service life |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
| CN106435094A (en) * | 2016-12-08 | 2017-02-22 | 中冶京诚工程技术有限公司 | RH method vacuum tank with lifting gas pipeline and arrangement method of lifting gas pipeline thereof |
| CN109837362A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of effectively slowing down the deformation of RH vacuum tank groove body |
| CN110106315A (en) * | 2019-04-01 | 2019-08-09 | 山东钢铁集团日照有限公司 | A kind of method of the control of RH vacuum tank long-life |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090617 |