CN105087872A - Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe - Google Patents
Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe Download PDFInfo
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- CN105087872A CN105087872A CN201410217712.9A CN201410217712A CN105087872A CN 105087872 A CN105087872 A CN 105087872A CN 201410217712 A CN201410217712 A CN 201410217712A CN 105087872 A CN105087872 A CN 105087872A
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Abstract
The invention discloses a repairing method of an RH refining furnace vacuum chamber tank bottom and a circulation pipe. An original circulation pipe is sleeved with a cylindrical steel structure. An even number of symmetric pressing holes are dug in the side wall of the cylindrical steel structure. An outer connecting pipeline is reserved, an extrusion machine is connected, and therefore pressing materials can be extruded to the parts of corroded work layers of the tank bottom and the circulation pipe. The repairing method is simple, convenient to implement and feasible. After repairing is finished, the cylindrical structure does not need to be taken out and can be automatically molten during steel smelting, and therefore when the cylindrical steel structure is taken out, refractory on work faces of the refining furnace vacuum chamber tank bottom and the circulation pipe part can be prevented from being damaged. Meanwhile, the workload is greatly reduced, the repairing time is short, and the time is only 1/2 of the time of an original digging and repairing manner. The usage amount of the refractory is reduced, during construction, the service life of the refractory of the tank bottom and the circulation pipe is guaranteed, and the profitability of enterprises is greatly improved.
Description
Technical field
The present invention relates to steel-making vacuum refining furnace
(RH stove)vacuum chamber bottom land and circulating pipe, be specifically related to the method for repairing and mending at a kind of RH refining furnace vacuum chamber bottom land and circulating pipe position.
Background technology
Along with iron and steel production capacity constantly expands, the continuous aggravation of competition, RH vacuum refining furnace, as the state-of-the-art vacuum refining device of current main-stream, the smelting of high-level steel grade plays vital effect.Improving constantly of RH SECONDARY REFINING IN A VACUUM CHAMBER is necessary means of improving the quality of products.The bottom land of RH vacuum refining furnace and circulating pipe position are high attack sites, and its life-span is one of most important factor seriously restricting the operation of RH refining furnace.
At present, the life-span of domestic lower channel can reach 3 ~ 5 times of bottom land and circulating pipe life-span, so need to mend repairing by replacing a damaged part to it when bottom land and circulating pipe reach work-ing life, repairs rear lower groove entirety to roll off the production line renewal by mend by replacing a damaged part for 2 ~ 4 times.Need to be down to room temperature to by cell body internal temperature in the process of mending repairing by replacing a damaged part, workmen can work; Mend the repair cycle by replacing a damaged part generally more than 4 days; Mend the refractory materials quantity of repairing use by replacing a damaged part comparatively large, construction requirement is strict at every turn.Meanwhile, the position of at every turn mending repairing by replacing a damaged part is all that weak link is easily formed and wears steel or the floating security incident of bottom land.
summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides the method for repairing and mending at a kind of vacuum refining furnace vacuum chamber bottom land and circulating pipe position.
Method for repairing and mending of the present invention is: bottom land and circulating pipe to reach work-ing life repairing require time, vacuum chamber rolls off the production line cooling, be cooled to vacuum chamber outside to room temperature time, operate according to the following steps:
1, prepare the round shape steel construction that outside diameter is former circulating pipe internal diameter in advance, the height of cylinder is the height of circulating pipe.
2, borehole on round shape steel construction sidewall.Reserved passage press-in material being pressed into space between steel construction cylinder and circulating pipe.Preset and press-in hole connecting pipeline.
3, with weight handling equipment, point body position of round shape steel construction by circulating pipe and soaking tub is held in the palm into circulating pipe position, and determine that its home position is concentric with circulating pipe.Concordant with bottom circulating pipe bottom steel construction.
4, squeegee pump and reserved interface is connected, opening device press-in press-in material.Press-in material enters into the passage between steel construction and circulating pipe by the hole of steel construction.After press-in is full, stop press-in.
5, the connection of press-fit equipment and steel construction interface is separated.Maintenance 12 hours-24 hours, steel construction does not take off, and terminates patch work.
On round shape steel construction sidewall during borehole, press-in hole quantity is set to even number, and position is positioned at round shape steel construction lower semisection, and symmetrically.
After end patch work, round shape steel construction need not take out.Round shape steel construction is arranged in molten steel passage, can automatically fusing in the smelting of steel, to the damage of refining furnace vacuum chamber bottom land and circulating pipe position working lining material therefor when can avoid like this getting round shape steel construction, and greatly reduces workload.
The beneficial effect that the present invention produces: the time of repairing is short, and the used time is only former and mends 1/2 of mode by replacing a damaged part; Vacuum chamber cooling is relatively less; Refractory materials usage quantity is only 1/2 of former mode; Repairing quality is good, and influence factor is less; Easy construction is easy.Ensure the work-ing life of bottom land and the resistance to material of circulating pipe simultaneously, greatly improve the profitability of enterprise.
Accompanying drawing explanation
Fig. 1 is vacuum chamber cell bottom structure front view; 1 is bottom land brick, and 2 is circulating pipe bricks, and 3 is press-in materials, and 4 is cylinder steel construction, and 5 is press-in material press-in hole on cylinder steel construction, and 6 is press-in hole connecting pipelines.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, RH refining furnace vacuum chamber bottom land 1 and circulating pipe 2 position.Work-ing life reach repairing require time, bottom land and circulating pipe suffer erosion and form certain damage.Need to repair it, carry out according to the following steps:
1, prepare the round shape steel construction 4 that outside diameter is former circulating pipe internal diameter, the height of cylinder is the height of circulating pipe.
2, on round shape steel construction sidewall, dig two holes 5, borehole position is positioned at its lower part.Position is symmetrical.Hole is connected press-fit equipment by its cylinder interior, and design leaves Link Port 6.
3, with weight handling equipment, cylinder steel construction is entered circulating pipe position by the holder of circulating pipe lower end position, and determine that its home position is concentric with circulating pipe, concordant with bottom circulating pipe bottom cylinder steel construction.
4, press-fit equipment and reserved interface is connected, opening device press-in press-in material.Press-in material is entered between steel construction and circulating pipe working face by the hole of steel construction.At the bottom of press-in material filling slot and circulating pipe damaged location, after press-in is full, unnecessary press-in material from cylinder inner wall landing, can stop press-in.
5, the connection of press-fit equipment and cylinder steel construction interface is separated.Press-in material maintenance 12 hours, cylinder does not take off, and terminates patch work.
Claims (2)
1. a method for repairing and mending for RH refining furnace vacuum chamber bottom land and circulating pipe, is characterized in that: method for repairing and mending comprises the following steps:
Step one: prepare the round shape steel construction that outside diameter is former circulating pipe internal diameter in advance, the height of cylinder is the height of circulating pipe; Step 2: borehole on round shape steel construction sidewall, reserved passage press-in material being pressed into space between steel construction cylinder and circulating pipe, presets and press-in hole connecting pipeline; Step 3: with weight handling equipment, point body position of round shape steel construction by circulating pipe and soaking tub is held in the palm into circulating pipe position, and determine that its home position is concentric with circulating pipe, concordant with bottom circulating pipe bottom steel construction; Step 4: connect squeegee pump and reserved interface, opening device press-in press-in material, press-in material enters into the passage between steel construction and circulating pipe by the hole of steel construction, after press-in is full, stops press-in; Step 5: the separately connection of press-fit equipment and steel construction interface, maintenance 12 hours-24 hours, steel construction does not take off, and terminates patch work.
2. the method for repairing and mending of a kind of RH refining furnace vacuum chamber bottom land according to claim 1 and circulating pipe, it is characterized in that: described on round shape steel construction sidewall borehole, the quantity in hole is set to even number, and position is positioned at round shape steel construction lower semisection, and symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217712.9A CN105087872A (en) | 2014-05-22 | 2014-05-22 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217712.9A CN105087872A (en) | 2014-05-22 | 2014-05-22 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105087872A true CN105087872A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410217712.9A Pending CN105087872A (en) | 2014-05-22 | 2014-05-22 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
Country Status (1)
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| CN (1) | CN105087872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107177719A (en) * | 2017-05-19 | 2017-09-19 | 中钢集团耐火材料有限公司 | A kind of quick change method of vacuum refining furnace circulating pipe refractory material |
| CN107779556A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of RH refining furnace vacuum chambers base channel restorative procedure |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0488116A (en) * | 1990-08-01 | 1992-03-23 | Shinagawa Refract Co Ltd | Method for repairing circulating flow tubes in rh degassing apparatus |
| CN1962892A (en) * | 2005-11-10 | 2007-05-16 | 上海宝钢冶金建设公司 | PH vacuum tank circulation pipe repairing method |
| CN101368659A (en) * | 2007-08-16 | 2009-02-18 | 中冶宝钢技术服务有限公司 | Method for mending circulating pipe |
| CN101457279A (en) * | 2007-12-12 | 2009-06-17 | 鞍钢股份有限公司 | Method for improving RH vacuum furnace bottom groove life |
| CN201334497Y (en) * | 2008-12-15 | 2009-10-28 | 鞍钢股份有限公司 | Gunning machine of vacuum chamber communicating pipe |
| CN201534864U (en) * | 2009-08-25 | 2010-07-28 | 鞍钢股份有限公司 | Gunning machine for maintaining bottom grooves of circulation type vacuum degassing furnaces |
| CN201897037U (en) * | 2010-12-06 | 2011-07-13 | 中冶宝钢技术服务有限公司 | Inner barrel device for on-line repairing integral type vacuum tank dipping pipe |
-
2014
- 2014-05-22 CN CN201410217712.9A patent/CN105087872A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0488116A (en) * | 1990-08-01 | 1992-03-23 | Shinagawa Refract Co Ltd | Method for repairing circulating flow tubes in rh degassing apparatus |
| CN1962892A (en) * | 2005-11-10 | 2007-05-16 | 上海宝钢冶金建设公司 | PH vacuum tank circulation pipe repairing method |
| CN101368659A (en) * | 2007-08-16 | 2009-02-18 | 中冶宝钢技术服务有限公司 | Method for mending circulating pipe |
| CN101457279A (en) * | 2007-12-12 | 2009-06-17 | 鞍钢股份有限公司 | Method for improving RH vacuum furnace bottom groove life |
| CN201334497Y (en) * | 2008-12-15 | 2009-10-28 | 鞍钢股份有限公司 | Gunning machine of vacuum chamber communicating pipe |
| CN201534864U (en) * | 2009-08-25 | 2010-07-28 | 鞍钢股份有限公司 | Gunning machine for maintaining bottom grooves of circulation type vacuum degassing furnaces |
| CN201897037U (en) * | 2010-12-06 | 2011-07-13 | 中冶宝钢技术服务有限公司 | Inner barrel device for on-line repairing integral type vacuum tank dipping pipe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107779556A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of RH refining furnace vacuum chambers base channel restorative procedure |
| CN107177719A (en) * | 2017-05-19 | 2017-09-19 | 中钢集团耐火材料有限公司 | A kind of quick change method of vacuum refining furnace circulating pipe refractory material |
| CN107177719B (en) * | 2017-05-19 | 2018-11-16 | 中钢集团耐火材料有限公司 | A kind of quick change method of vacuum refining furnace circulating pipe refractory material |
| 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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Application publication date: 20151125 |
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