CN106916918A - A kind of method of quick aligning revolving furnace sublance gun body - Google Patents
A kind of method of quick aligning revolving furnace sublance gun body Download PDFInfo
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- CN106916918A CN106916918A CN201710208421.7A CN201710208421A CN106916918A CN 106916918 A CN106916918 A CN 106916918A CN 201710208421 A CN201710208421 A CN 201710208421A CN 106916918 A CN106916918 A CN 106916918A
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- gun body
- sublance
- hot spot
- tube section
- bending tube
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A kind of method of quick aligning revolving furnace sublance gun body, belongs to revolving furnace sublance method for maintaining technical field, for quickly being aligned to the revolving furnace sublance gun body for bending.Its technical scheme is：Sublance is rolled, bending tube section back is placed upward；Using gas welding to gun body bending tube section hot spot heating-straightening one by one, the heating region of hot spot is the top and middle part of gun body circumference；Poured from top to bottom with cooling water by a people after the completion of first hot spot heating and be filled in heating region, pouring should be immediately stopped when estimating after steel pipe is aligned successfully；Heating-straightening is carried out to other hot spots successively.The present invention is simple to operate, and the aligning of sublance body bending tube section can be just completed using only gas welding device, has saved maintenance of equipment and manpower, substantially increases the efficiency of sublance maintenance work.The present invention substantially prolongs the service life of sublance, improve sublance utilization rate, for cost efficiency provides effective technical support, reduce the production cost of enterprise, improve the benefit of enterprise.
Description
Technical field
The present invention relates to a kind of method for carrying out quick aligning to the revolving furnace sublance gun body for bending, belong to revolving furnace sublance maintenance
Method and technology field.
Background technology
Sublance is the visual plant of converter producing, and sublance utilization rate directly decides smelting cycle, and sublance body situation
It is related to the utilization rate of sublance again.In process of production, sublance will be entered into and turn furnace inner sampling thermometric, and sublance enters meeting after converter
Occur to converter tapping lateral bend phenomenon, crooked position be from pipette tips up 2.5 meters to 3 meters or so rifles section, it is typically left in 400 stoves
Right sublance body will severe bends, it is impossible to realize the automatic connection with probe, it is necessary to change sublance.Think by analysis, it is secondary
Rifle lance body structure is socketed to form by three layers of seamless steel pipe, wherein inner tube Ф 33mm, middle pipe Ф 79mm, outer tube Ф 115mm,
Circulation cooling water in outer tube, middle pipe seam gap, design of cooling water flow 60 to 80m3/h, the m3/h of actually used flow 65.Meet cold
But require, thus can exclude because gun body cooling it is insufficient and caused by gun body bending possibility.On the other hand, sublance enters and turns
Thermometric sampling in stove, position overlaps in converter tapping side and not with converter center line, and oxygen rifle uninterruptedly blows when thermometric is sampled, and makes
Molten steel is in swirling in stove.The liquid steel level pressed close at furnace wall is higher and near apart from sublance body, the hot spoke that this face of gun body receives
Penetrate mutually more, according to principle of expanding with heat and contracting with cold, sublance will be to opposite flexural deformation, and as shown in drawings, therefore sublance body deforms
Basic reason caused because gun body outer tube two sides is heated uneven, cause gun body curved to the low one side of caloradiance
It is bent.
The sublance for aligning bending is always the problem that technical staff attempts to solve, and also takes various trials, including use
Conventional machine straightening and reverse heating-straightening.If aligned using the method for conventional machine straightening, because sublance is
Three layers of tube-in-tube structure, after sublance body occurs bending and deformation, machine straightening can cause that the interval between three layers of sleeve of gun body is sent out
Changing, influence is used or can not used at all after causing aligning.Also technical staff proposes to be connect by the rotation at the top of gun body
Sublance rotation is further continued for use and can make sublance automatic flattening for 180 ° by head, but because of this side of the reasons such as swivel joint existing defects
Method causes the sublance can not normally to use.Therefore so far, each steel production enterprise does not align the sublance of bending effectively
Method, as the influence problem that uses of sublance, while also increasing the production cost of enterprise, therefore be extremely necessary research one
The method that revolving furnace sublance gun body is quickly aligned is planted, to meet current production needs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method of quick aligning revolving furnace sublance gun body, this method
Quickly revolving furnace sublance gun body can be aligned, not interfere with the structure in sublance body, the pair after ensure that after aligning
The use function of rifle, therefore extend the service life of sublance, reduce the production cost of enterprise.
Solving the technical scheme of above-mentioned technical problem is：
A kind of method of quick aligning revolving furnace sublance gun body, it is carried out using following steps：
A, by sublance horizontal positioned, bottom pad puts steel pipe, be easy to roll sublance to search bending tube section；
B, rolling sublance, make bending tube section back place upward；
C, measurement gun body bending tube section length, bend segment length and determine hot spot spacing distance, heating and count out according to sublance；
D, using gas welding to gun body bending tube section hot spot heating-straightening one by one, be sequentially from pipette tips distal end toward proximal direction one by one
Heating, heating-up temperature is 780-820 DEG C, and the heating region of hot spot is the top and middle part of gun body circumference；
Poured from top to bottom with cooling water by a people after the completion of e, first hot spot heating and be filled in heating region, by another people in rifle
Head distal end range estimation steel pipe aligning degree, pouring should be immediately stopped when estimating after steel pipe is aligned successfully, prevent sub-cooled from producing anti-
To bending；
F, heating-straightening is carried out to other hot spots successively.
The method of above-mentioned quick aligning revolving furnace sublance gun body, gun body bending tube section length in the step c for 500mm with
It is interior, take a hot spot, hot spot to be located at the midpoint of gun body bending tube section；Gun body bending tube section length be 500-1000mm it
Between, take three hot spots, one of hot spot to be located at the midpoint of gun body bending tube section, two other hot spot separation two
Side, is 250mm apart from the distance of midpoint hot spot；Gun body bending tube section length adds between 1000-1500mm, to take five
Focus, one of hot spot is located at the midpoint of gun body bending tube section, the both sides at four additional hot spot separation midpoint, per side two
The distance between individual hot spot, adjacent hot spot are 250mm.
The method of above-mentioned quick aligning revolving furnace sublance gun body, the heating region of the hot spot in the step d is gun body circle
The top in week and 220 degree of middle part circular arc portion, 220 degree of circular arcs symmetrically divide in the vertical center line left and right sides of gun body circumferential section
Cloth；
The method of above-mentioned quick aligning revolving furnace sublance gun body, is poured and is filled in heating region from top to bottom in the step e with cooling water
When, be from the both sides of heating region while uniform pouring.
The beneficial effects of the invention are as follows：
The present invention is heated the uneven mechanism for bending for sublance in converter internal cause, takes corresponding counterattacking measure, equally
Sublance body is bent to opposite direction using the principle expanded with heat and contract with cold, recover original glacing flatness.In above process, through excessive
The practice of amount, have found the operation rule such as determination hot spot quantity, heating-up temperature, heating region, type of cooling, realize to curved
The quick aligning of bent sublance body.
The present invention is simple to operate, and the aligning of sublance body bending tube section can be just completed using only gas welding device, saves
Maintenance of equipment and manpower, substantially increase the efficiency of sublance maintenance work, the cost effectiveness with highly significant.
The present invention is the innovation of revolving furnace sublance method for maintaining, solves the long-term sublance body bending not solved and is difficult to rectify
Straight problem, substantially prolongs the service life of sublance, improve sublance utilization rate, realize the continuous fast pace life of steel-making
Produce, for cost efficiency provides effective technical support, reduce the production cost of enterprise, improve the benefit of enterprise.
Brief description of the drawings
Fig. 1 is the schematic diagram of sublance heated bending in converter；
Fig. 2 is three hot spot schematic diagrames of sublance bending tube section；
Fig. 3 is the A-A sectional views of Fig. 2.
Marked in figure as follows：Converter 1, sublance 2, heat radiation 3, hot spot 4, heating region 5.
Specific embodiment
The present invention is heated the uneven mechanism for bending for sublance in converter internal cause, takes corresponding counterattacking measure,
Sublance body is bent to opposite direction also with the principle expanded with heat and contract with cold, recover original glacing flatness.In the method for the present invention
In, by substantial amounts of practice, the operation rule such as determination hot spot quantity, heating-up temperature, heating region, type of cooling is have found,
Realize the quick aligning to the sublance body for bending.
The method of quick aligning revolving furnace sublance gun body of the invention, it is carried out using following steps：
A, by the horizontal positioned of sublance 2, bottom pad puts steel pipe, be easy to roll sublance 2 to search bending tube section；
B, rolling sublance 2, make bending tube section back place upward；
C, measurement gun body bending tube section length, bend segment length and determine the spacing distance of hot spot 4, hot spot 4 and count according to sublance 2
Mesh；
D, using gas welding to gun body bending tube section hot spot heating-straightening one by one, be sequentially from pipette tips distal end toward proximal direction one by one
Heating, heating-up temperature is 800 DEG C, and the heating region 5 of hot spot 4 is the top and middle part of gun body circumference；
Poured from top to bottom with cooling water by a people after the completion of e, first hot spot heating and be filled in heating region 5, existed by another people
Pipette tips distal end range estimation steel pipe aligning degree, pouring should be immediately stopped when estimating after steel pipe is aligned successfully, prevent sub-cooled from producing
Back-flexing；
F, heating-straightening is carried out to other hot spots 4 successively.
The present invention needs to be designed the hot spot 4 of gun body in step c, by a large amount of practices, the hot spot 4 of gun body
It is defined below：
Within gun body bending tube section length is 500mm, a hot spot 4, hot spot 4 is taken to be located in gun body bending tube section
Point；
Between gun body bending tube section length is 500-1000mm, three hot spots 4, one of hot spot 4 are taken to be located at rifle
The midpoint of body bending tube section, two other hot spot 4 separation both sides, are 250mm apart from the distance of midpoint hot spot 4；（See accompanying drawing
2）
Between gun body bending tube section length is 1000-1500mm, five hot spots 4, one of hot spot 4 are taken to be located at rifle
The midpoint of body bending tube section, four additional hot spot 4 is lived apart the both sides at midpoint, per side two hot spot 4, adjacent hot spot 4 it
Between distance be 250mm.（It is shown in Table 1）
Table 1
| Bending segment length | Heating points | Hot spot spacing distance |
| 500mm | 1 | 250mm |
| 1000mm | 3 | 250mm |
| 1500mm | 5 | 250mm |
Fig. 3 shows that the heating region 5 of hot spot 4 of the present invention in step d is top and 220 degree of the middle part circle of gun body circumference
Arc portion point, 220 degree of circular arcs are symmetrical in the vertical center line left and right sides of gun body circumferential section；
The present invention is poured when being filled in heating region 5 from top to bottom in step e with cooling water, be from the both sides of heating region 5 simultaneously
Uniform pouring.Can be using two mineral water bottles from top to bottom to both sides while by the way of pouring.
Claims (4)
1. a kind of method of quick aligning revolving furnace sublance gun body, it is characterised in that：It is carried out using following steps：
A, by sublance（2）Horizontal positioned, bottom pad puts steel pipe, is easy to roll sublance（2）To search bending tube section；
B, rolling sublance（2）, bending tube section back is placed upward；
C, measurement gun body bending tube section length, according to sublance（2）Bend segment length and determine hot spot（4）Spacing distance, heating
Point（4）Number；
D, using gas welding to gun body bending tube section hot spot（4）Heating-straightening one by one, is sequentially from pipette tips distal end toward proximal direction
Heat one by one, heating-up temperature is 780-820 DEG C, hot spot（4）Heating region（5）It is the top and middle part of gun body circumference；
E, first hot spot（4）Poured from top to bottom with cooling water by a people after the completion of heating and be filled in heating region（5）, by another
People should immediately stop pouring in pipette tips distal end range estimation steel pipe aligning degree when estimating after steel pipe is aligned successfully, prevent sub-cooled
Produce back-flexing；
F, heating-straightening is carried out to other hot spots successively.
2. the method for quick aligning revolving furnace sublance gun body according to claim 1, it is characterised in that：In the step c
Gun body bending tube section length be 500mm within, take a hot spot（4）, hot spot（4）In gun body bending tube section
Point；Gun body bending tube section length be 500-1000mm between, take three hot spots（4）, one of hot spot（4）It is located at
The midpoint of gun body bending tube section, two other hot spot（4）Separation both sides, apart from midpoint hot spot（4）Distance be 250mm；
Gun body bending tube section length be 1000-1500mm between, take five hot spots（4）, one of hot spot（4）Positioned at rifle
The midpoint of body bending tube section, four additional hot spot（4）The both sides at separation midpoint, per the hot spot of side two（4）, adjacent hot spot
（4）The distance between be 250mm.
3. the method for quick aligning revolving furnace sublance gun body according to claim 2, it is characterised in that：In the step d
Hot spot（4）Heating region（5）Top and 220 degree of middle part circular arc portion for gun body circumference, 220 degree of circular arcs are in gun body circumference
The vertical center line left and right sides in section is symmetrical.
4. the method for quick aligning revolving furnace sublance gun body according to claim 3, it is characterised in that：Used in the step e
Cooling water pours be filled in heating region from top to bottom（5）When, be from heating region（5）Both sides uniform pouring simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208421.7A CN106916918B (en) | 2017-03-31 | 2017-03-31 | A kind of method of quick aligning revolving furnace sublance gun body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208421.7A CN106916918B (en) | 2017-03-31 | 2017-03-31 | A kind of method of quick aligning revolving furnace sublance gun body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106916918A true CN106916918A (en) | 2017-07-04 |
| CN106916918B CN106916918B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710208421.7A Expired - Fee Related CN106916918B (en) | 2017-03-31 | 2017-03-31 | A kind of method of quick aligning revolving furnace sublance gun body |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203678928U (en) * | 2013-10-23 | 2014-07-02 | 宝山钢铁股份有限公司 | Online straightening device for sublance for measuring temperature of molten steel in converter |
| CN105089150A (en) * | 2015-06-24 | 2015-11-25 | 浙江东南网架股份有限公司 | Single-layer latticed shell structure with drum type nodes, and assembly method |
| CN205576198U (en) * | 2016-05-16 | 2016-09-14 | 河北钢铁股份有限公司承德分公司 | Online straightener of converter sublance |
-
2017
- 2017-03-31 CN CN201710208421.7A patent/CN106916918B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203678928U (en) * | 2013-10-23 | 2014-07-02 | 宝山钢铁股份有限公司 | Online straightening device for sublance for measuring temperature of molten steel in converter |
| CN105089150A (en) * | 2015-06-24 | 2015-11-25 | 浙江东南网架股份有限公司 | Single-layer latticed shell structure with drum type nodes, and assembly method |
| CN205576198U (en) * | 2016-05-16 | 2016-09-14 | 河北钢铁股份有限公司承德分公司 | Online straightener of converter sublance |
Non-Patent Citations (1)
| Title |
|---|
| 奥•布洛德盖特: "焊接变形的控制与矫正（下）", 《钢结构》 * |
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| Publication number | Publication date |
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| CN106916918B (en) | 2019-10-18 |
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