CN106916918B - 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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- CN106916918B CN106916918B CN201710208421.7A CN201710208421A CN106916918B CN 106916918 B CN106916918 B CN 106916918B CN 201710208421 A CN201710208421 A CN 201710208421A CN 106916918 B CN106916918 B CN 106916918B
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- China
- Prior art keywords
- gun body
- sublance
- hot spot
- heating
- tube section
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005452 bending Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 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 8
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 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
- 238000010079 rubber tapping 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
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process 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
- 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
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009628 steelmaking Methods 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 curved revolving furnace sublance gun body.Its technical solution is: rolling sublance, places bending tube section back upward；Using gas welding, to gun body bending tube section hot spot, heating-straightening, the heating region of hot spot are the top and middle part of gun body circumference one by one；It is poured from top to bottom by a people with cooling water after the completion of first hot spot heating and is filled in heating region, should stop pouring immediately after estimating steel pipe and aligning successfully；Heating-straightening successively is carried out to other hot spots.Operation of the present invention is simple, and the aligning of sublance body bending tube section can be 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, improves sublance utilization rate, provides effective technical support for cost efficiency, reduces the production cost of enterprise, improves the benefit of enterprise.
Description
Technical field
The present invention relates to a kind of methods quickly aligned to curved revolving furnace sublance gun body, belong to revolving furnace sublance maintenance
Method and technology field.
Background technique
Sublance is the important equipment 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, which will enter, turns furnace inner sampling thermometric, and sublance enters meeting after converter
Occur to converter tapping lateral bend phenomenon, crooked position is from pipette tips up 2.5 meters to 3 meters or so rifle sections, generally on a 400 furnaces left side
Right sublance body will severe bends, cannot achieve with probe automatic connection, it is necessary to replace 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,
Circulate cooling water in outer tube, middle pipe seam gap, and design of cooling water flow 60 to 80m3/h actually uses 65 m3/h of flow.Meet cold
But require, thus can exclude because gun body is cooling insufficient cause gun body to be bent a possibility that.On the other hand, sublance, which enters, turns
Thermometric samples in furnace, and position is in converter tapping side and is not overlapped with converter center line, and oxygen rifle uninterruptedly blows when thermometric samples, and makes
Molten steel is in circinate in furnace.It is higher close to the liquid steel level at furnace wall and close apart from sublance body, the received hot spoke in this face of gun body
Penetrate mutually more, according to thermal expansion and contraction principle, sublance will be to opposite bending deformation, as shown in the picture, therefore sublance body deforms
Basic reason be as gun body outer tube two sides uneven heating is even and caused by, cause gun body curved to the low one side of caloradiance
It is bent.
Aligning curved sublance is always that technical staff attempts to solve the problems, such as, also takes a variety of trials, including use
Conventional machine straightening and reversed heating-straightening.If aligned using the method for conventional machine straightening, since sublance is
Three layers of tube-in-tube structure, after sublance body occurs bending and deformation, machine straightening meeting is so that the interval between three layers of sleeve of gun body is sent out
Changing is influenced to use or cannot be used at all after leading to aligning.It proposes to connect by the rotation at the top of gun body there are also technical staff
Sublance rotation is further continued for using can make sublance automatic flattening, but because of this side of the reasons such as rotary joint existing defects for 180 ° by head
Method causes sublance to be unable to normal use.Therefore so far, each steel production enterprise does not align curved sublance effectively
Method, becoming influences the problem that uses of sublance, while also increasing the production cost of enterprise, therefore very it is necessary to study one
The method that kind revolving furnace sublance gun body is quickly aligned, to meet current production needs.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of method of quickly aligning revolving furnace sublance gun body, this methods
Quickly revolving furnace sublance gun body can be aligned, will not influence the structure in sublance body, the pair after capable of guaranteeing after aligning
The use function of rifle, therefore extend the service life of sublance, reduce the production cost of enterprise.
The technical solution for solving 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, sublance is horizontally arranged, bottom pad sets steel pipe, convenient for rolling sublance to search bending tube section；
B, sublance is rolled, places bending tube section back upward；
C, gun body bending tube section length is measured, segment length is bent according to sublance and determines hot spot spacing distance, hot spot
Number；
D, using gas welding to gun body bending tube section hot spot heating-straightening one by one, sequentially for from pipette tips distal end toward proximal direction
It heats one by one, heating temperature is 780-820 DEG C, and the heating region of hot spot is the top and middle part of gun body circumference；
E, it is poured from top to bottom by a people with cooling water after the completion of first hot spot heating and is filled in heating region, by another people
Degree is aligned in pipette tips distal end range estimation steel pipe, should stop pouring immediately after estimating steel pipe and aligning successfully, prevent sub-cooled from producing
Raw back-flexing；
F, heating-straightening successively is carried out to other hot spots.
The method of above-mentioned quick aligning revolving furnace sublance gun body, the gun body bending tube section length in the step c be 500mm with
It is interior, a hot spot is taken, hot spot is located at the midpoint of gun body bending tube section；Gun body bending tube section length be 500-1000mm it
Between, three hot spots are taken, one of hot spot is located at the midpoint of gun body bending tube section, other two hot spot separation two
Side, the distance apart from midpoint hot spot are 250mm；Gun body bending tube section length takes five to add between 1000-1500mm
Hot spot, one of hot spot are located at the midpoint of gun body bending tube section, the two sides at four additional hot spot separation midpoint, every side two
A hot spot, the distance between 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 are gun body circle
The top and 220 degree of middle part circular arc portion, 220 degree of circular arcs in week are symmetrically divided at left and right sides of the vertical center line of gun body circumferential section
Cloth；
The method of above-mentioned quick aligning revolving furnace sublance gun body is poured in the step e from top to bottom with cooling water and is filled in heating
When region, uniformly to pour simultaneously from the two sides of heating region.
The beneficial effects of the present invention are:
The present invention is directed to the mechanism that sublance bends in converter because uneven heating is even, takes corresponding counterattacking measure,
Sublance body is bent to opposite direction also with the principle expanded with heat and contract with cold, and restores original straightness.In above process, it passes through
A large amount of practice is crossed, the operation rule such as determining hot spot quantity, heating temperature, heating region, type of cooling is had found, realizes
To the quick aligning of curved sublance body.
Operation of the present invention is simple, and the aligning of sublance body bending tube section can be 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 sublance body bending not solved for a long time and is difficult to rectify
Straight problem substantially prolongs the service life of sublance, improves sublance utilization rate, and the continuous fast pace for realizing steel-making is raw
It produces, provides effective technical support for cost efficiency, reduce the production cost of enterprise, improve the benefit of enterprise.
Detailed description of the invention
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 cross-sectional view of Fig. 2.
It is marked in figure as follows: converter 1, sublance 2, heat radiation 3, hot spot 4, heating region 5.
Specific embodiment
The present invention is directed to the mechanism that sublance bends in converter because uneven heating is even, takes corresponding counterattacking measure,
Sublance body is bent to opposite direction also with the principle expanded with heat and contract with cold, and restores original straightness.In method of the invention
In, by largely practicing, the operation rule such as determining hot spot quantity, heating temperature, heating region, type of cooling is had found,
Realize the quick aligning to curved sublance body.
The method that the present invention quickly aligns revolving furnace sublance gun body, it is carried out using following steps:
A, sublance 2 is horizontally arranged, bottom pad sets steel pipe, convenient for rolling sublance 2 to search bending tube section；
B, sublance 2 is rolled, places bending tube section back upward；
C, gun body bending tube section length is measured, segment length is bent according to sublance 2 and determines 4 spacing distance of hot spot, heating
4 numbers of point；
D, using gas welding to gun body bending tube section hot spot heating-straightening one by one, sequentially for from pipette tips distal end toward proximal direction
It heats one by one, heating temperature is 800 DEG C, and the heating region 5 of hot spot 4 is the top and middle part of gun body circumference；
E, it is poured from top to bottom by a people with cooling water after the completion of first hot spot heating and is filled in heating region 5, by another
People aligns degree in pipette tips distal end range estimation steel pipe, should stop pouring immediately after estimating steel pipe and aligning successfully, prevent sub-cooled
Generate back-flexing；
F, heating-straightening successively is carried out to other hot spots 4.
The present invention needs to be designed the hot spot 4 of gun body in step c, by largely practicing, the hot spot 4 of gun body
Determination is as follows:
When gun body bending tube section length is to take a hot spot 4, hot spot 4 is located at gun body bending tube section within 500mm
Midpoint；
When gun body bending tube section length is between 500-1000mm, three hot spots 4, one of hot spot 4 are taken
In the midpoint of gun body bending tube section, other two hot spot 4 separation two sides, the distance apart from midpoint hot spot 4 is 250mm；(see
Attached drawing 2)
When gun body bending tube section length is between 1000-1500mm, five hot spots 4, one of hot spot 4 are taken
In the midpoint of gun body bending tube section, four additional hot spot 4 is lived apart the two sides at midpoint, there are two on each side hot spot 4, adjacent hot spot
The distance between 4 be 250mm.(see Table 1)
Table 1
| It is bent 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 the top and middle part 220 of gun body circumference
Circular arc portion is spent, 220 degree of circular arcs are symmetrical at left and right sides of the vertical center line of gun body circumferential section；
The present invention is poured in step e with cooling water from top to bottom when being filled in heating region 5, be from the two sides of heating region 5
It uniformly pours simultaneously.It can be in such a way that two mineral water bottles from top to bottom pour simultaneously to both sides.
Claims (2)
1. a kind of method of quickly aligning revolving furnace sublance gun body, it is characterised in that: it is carried out using following steps:
A, sublance (2) are horizontal positioned, bottom pad sets steel pipe, convenient for rolling sublance (2) to search bending tube section；
B, sublance (2) are rolled, places bending tube section back upward；
C, gun body bending tube section length is measured, segment length is bent according to sublance (2) and determines hot spot (4) spacing distance, heating
Point (4) number；Gun body bending tube section length is to take a hot spot (4) within 500mm, and hot spot (4) is located at gun body bending
The midpoint of pipeline section；Gun body bending tube section length takes three hot spots (4) between 500-1000mm, one of heating
Point (4) is located at the midpoint of gun body bending tube section, other two hot spot (4) separation two sides, the distance apart from midpoint hot spot (4)
For 250mm；Gun body bending tube section length takes five hot spots (4), one of hot spot between 1000-1500mm
(4) it is located at the midpoint of gun body bending tube section, four additional hot spot (4) is lived apart the two sides at midpoint, there are two on each side hot spot (4),
The distance between adjacent hot spot (4) is 250mm；
D, using gas welding to gun body bending tube section hot spot (4) heating-straightening one by one, sequentially for from pipette tips distal end toward proximal direction
It heats one by one, heating temperature is 780-820 DEG C, and the heating region (5) of hot spot (4) is the top and middle part of gun body circumference；
E, it is poured from top to bottom by a people with cooling water after the completion of first hot spot (4) heating and is filled in heating region (5), from heating
The two sides in region (5) uniformly pour simultaneously；By another people pipette tips distal end range estimation steel pipe align degree, when range estimation steel pipe aligning at
It should stop pouring immediately after function, prevent sub-cooled from generating back-flexing；
F, heating-straightening successively is carried out to other hot spots.
2. the method for quick aligning revolving furnace sublance gun body according to claim 1, which is characterized in that in the step d
The heating region (5) of hot spot (4) is top and 220 degree of the middle part circular arc portion of gun body circumference, and 220 degree of circular arcs are in gun body circumference
It is symmetrical at left and right sides of the vertical center line in section.
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 CN106916918A (en) | 2017-07-04 |
| CN106916918B true 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》.1995,第43-52页. * |
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| CN106916918A (en) | 2017-07-04 |
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