CN108381052A - A kind of converter vaporization flue site welding method - Google Patents
A kind of converter vaporization flue site welding method Download PDFInfo
- Publication number
- CN108381052A CN108381052A CN201810059621.5A CN201810059621A CN108381052A CN 108381052 A CN108381052 A CN 108381052A CN 201810059621 A CN201810059621 A CN 201810059621A CN 108381052 A CN108381052 A CN 108381052A
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- Prior art keywords
- welding
- flue
- comb
- evaporated
- evaporated flue
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention provides a kind of converter vaporization flue site welding method, belongs to installing construction method, processing step is as follows：One, preparation of construction, smooth location arrange moulding bed；Two, group pair, handles comb groove, and relative distance between the first evaporated flue and the first evaporated flue is adjusted using chain block；Wind-proof shed is set up on the outside of evaporated flue welding region, operating platform is set up on the inside of evaporated flue；Three, it welds, centering, spot welding, using outer after in elder generation, horizontal direction both sides, both sides interlock welding procedure welding；It is filled at the neutral gear among comb one and comb two using parting bead after welding, filling filling weld seam, it is ensured that No leakage.The present invention solves the problems, such as during welding to ensure during converter vaporization flue section construction Assembling, welding, installation that the control difficulty of the misalignment of the circularity of evaporated flue itself and each seamless steel pipe docking and welding quality is big.
Description
Technical field
The present invention relates to technical field of buildings, and in particular to a kind of converter vaporization flue site welding method is suitable for vapour
Change flue welding.
Background technology
Converter vaporization flue, also referred to as waste heat boiler are one of main corollary equipments of pneumatic steelmaking.The equipment is working
When to collect high-temperature flue gas to the maximum extent, bear highest furnace gas temperature and violent frequent temperature change, while operating mode is most
It is severe, is easiest to bond the slag of splash.Converter vaporization flue has a circle comb, will produce in steelmaking process a large amount of
High-temperature flue gas, main component are carbon monoxide.Coal gas of converter calorific capacity is a kind of first-class fuel up to 7524-9196kJ, can
Fuel as equipment such as heater for rolling steel, lime sleeve kiln, ladle bakings.Also contain a large amount of high Fe contents in flue gas simultaneously
Dust can be used as the superior raw material of sinter after collection.In addition, high-temperature flue gas is steamed by heat exchange and recyclable a large amount of steam
Vapour purposes is very wide, can be not only used for producing, and can be used for living.Therefore, very great to converter gas using energy source meaning.If this
A little high-temperature flue gas do not recycle, and distribute and will produce serious pollution in workshop and air, jeopardize health of human body and agricultural production, simultaneously
Power grid, TV and communication etc. can be interfered.In pneumatic steelmaking, the processing that flue gas is generated to steel-making is the master of steel mill Environmental Protection Level
One of indicate, an important factor for recycling and reuse of coal gas and steam are also its capability of energy dissipation, and the steam of pneumatic steelmaking
With coal-gas recovering realized by off-gas recovery purification system.
Evaporated flue system is made of movable flue, fixed flue, mobile section, oblique section and bending section, is arranged in steel-making
In each layer platform of high building；In general evaporated flue diameter reaches 4.1m, and long 56m, such large volume, overweight equipment can not be straight
Transport and installation are connect, is all section construction Assembling, welding, installation；Evaporated flue by 186 φ 60 × 5 seamless steel
Pipe is assembled into a circle, ensures the circularity and each seamless steel pipe of evaporated flue itself during welding after segmentation is marched into the arena
The misalignment of docking and the control difficulty of welding quality are big.
Invention content
The present invention provides a kind of converter vaporization flue site welding method, it is therefore intended that solves to propose in above-mentioned background technology
Converter vaporization flue section construction Assembling, welding, ensure during welding during installation evaporated flue from
The big problem of the control difficulty of the misalignment and welding quality of the circularity of body and the docking of each seamless steel pipe.
To achieve the above object, the embodiment of the present invention provides a kind of converter vaporization flue site welding method, including following
Step：
Step 1, preparation of construction
1) the comb material of evaporated flue is No. 20 boiler steels, and welding procedure qualification report and welding are formulated according to this requirement
Technique guiding book；
2) levelling of the land is compacted, and has the condition of gasification cooling flue sectional；
3) on the ground by the placement of moulding bed level；
Step 2, group pair
1) the first evaporated flue of segmentation and the second evaporated flue are lifted respectively to moulding bed, using beveling machine to comb
Groove processing, ensure bevel angle and comb end verticality, to meet welding requirements；
2) wind-proof shed is set up on the outside of welding region, and operating platform is set up on the inside of evaporated flue；
3) chain block is utilized to adjust relative distance between the first evaporated flue and the second evaporated flue；
4) cleaning derusting is carried out in the port of comb, it is ensured that without grease, water, rust staining etc.；
Step 3, welding
1) centering, spot welding, with the fixture of same material by the first evaporated flue and the corresponding comb pair of the second evaporated flue
Mouth is concordant, and spot welding；
2) entire welding procedure is outer after being in elder generation；When the weld seam of welding inside comb, while electrode holder on the inside of welding, and
Lead to tunger tube to outside to protect, to build welding surroundings；
3) ultrasound examination is carried out after the completion of butt weld welding, and next procedure can be carried out after qualified；
4) it is filled at the neutral gear among the first comb and the second comb in parting bead, filling filling weld seam, it is ensured that No leakage；
5) coating paint, welding are completed.
Preferably, qualification of welding procedure ensures the standard before welding and basis in step 1, and by qualification of welding procedure system
Determine welding procedure guiding book.
Preferably, in step 2, the height of wind-proof shed and operating platform reaches the requirement stood for welding personnel；It is windproof
It is length 6m, width 3m, height 6m that canopy, which utilizes scaffold building, outer laying PVC windproof and rain proof cloth, size,.
Preferably, in step 2, after the first evaporated flue and the second evaporated flue are in place, the counterpart of comb has in order to control
Spacing is adjusted using chain block in body, and four sets of 5t chain blocks are respectively set in circumferencial direction in chain block；Formally welding
It is in the 50mm of comb port to the cleanup area in comb port before connecing.
Preferably, in step 3, the welding sequence of rear outer welding procedure is the level two from evaporated flue in the elder generation
It welds up and down side.
In conclusion compared with prior art, the present invention advantage following points：
1) the smooth compacting in place must be carried out before group is to evaporated flue, ensure that the docking of equipment most clock synchronization is smooth, with
It avoids welding stress in welding process caused by uneven lower layer.
2) the processing quality of comb groove directly affects subsequent welding quality, group to it is preceding carry out groove processing, with
Ensure that welding fabrication is good；Groove end verticality is unanimously to ensure that counterpart distance meets code requirement.
3) wind-proof shed (5) is set as preventing influence of the external environment to welding region.
4) it is the welding ensured inside evaporated flue, operating platform (4) is set up inside evaporated flue, ensures operating personnel
Safety.
5) rear outer welding procedure is to ensure the weld seam welding of internal comb (1) in the elder generation.
Description of the drawings
Fig. 1 illustrates the preparation of construction schematic diagram of the present invention；
Fig. 2 illustrates the flue group of the present invention to schematic diagram；
Fig. 3 illustrates the flue welding schematic diagram of the present invention；
It illustrates：1. comb, 2. filling weld seams, 3. moulding beds, operating platform, 5. outer wind-proof sheds, 6. electrode holders, 7. in 4.
Tunger tube, 8. first evaporated flues, 9. second evaporated flues, 10. chain blocks, 11. first combs, 12. second combs, 13.
Groove, 14. butt welds, 15. parting beads.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Below in conjunction with the accompanying drawings and specific embodiment is further described the application principle of the present invention.
Embodiment one
A kind of converter vaporization flue site welding method as shown in Figure 1 to Figure 3, includes the following steps：
Step 1, preparation of construction
1) 1 material of comb of evaporated flue is No. 20 boiler steels, and welding procedure qualification report and weldering are formulated according to this requirement
Connect technique guiding book；
2) levelling of the land is compacted, and has the condition of gasification cooling flue sectional；
3) on the ground by the horizontal placement of moulding bed 3；
Step 2, group pair
1) the first evaporated flue 8 of segmentation and the second evaporated flue 9 are lifted respectively to moulding bed 3, utilizes beveling machine pair
The groove 13 of comb 1 is handled, and ensures the verticality of bevel angle and 1 end of comb, to meet welding requirements；
2) wind-proof shed 5 is set up on the outside of welding region, and operating platform 4 is set up on the inside of evaporated flue；
3) chain block 10 is utilized to adjust relative distance between the first evaporated flue 8 and the second evaporated flue 9；
4) cleaning derusting is carried out in the port of comb 1, it is ensured that without grease, water, rust staining etc.；
Step 3, welding
1) centering, spot welding, with the fixture of same material by 9 corresponding comb of the first evaporated flue 8 and the second evaporated flue
1 counterpart is concordant, and spot welding；
2) entire welding procedure is outer after being in elder generation；When the weld seam of welding inside comb 1, while electrode holder 6 on the inside of welding, and
And tunger tube 7 is led to outside and is protected, to build welding surroundings；
3) ultrasound examination is carried out after the completion of the welding of butt weld 14, and next procedure can be carried out after qualified；
4) it is filled at the neutral gear among the first comb 11 and the second comb 12 in parting bead 15, filling filling weld seam 2, it is ensured that nothing
Leakage；
5) coating paint, welding are completed.
Wherein, qualification of welding procedure ensures the standard before welding and basis in step 1, and is formulated by qualification of welding procedure
Welding procedure guiding book；In step 2, the height of wind-proof shed 5 and operating platform 4 reaches the requirement stood for welding personnel；It is anti-
It is length 6m, width 3m, height 6m that wind canopy 5, which utilizes scaffold building, outer laying PVC windproof and rain proof cloth, size,；In step 2,
After the first evaporated flue 8 and the second evaporated flue 9 are in place, the counterpart of comb 1 is specific in order to control, and chain block 10 is utilized to carry out
Spacing is adjusted, four sets of 5t chain blocks are respectively set in circumferencial direction in chain block 10；Before formal welding, to 1 end of comb
Cleanup area in mouthful is in 1 port 50mm of comb；In step 3, the welding sequence of rear outer welding procedure in the elder generation
It is to be welded up and down from the horizontal both sides of evaporated flue.
A kind of converter vaporization flue site welding method proposed by the invention, uses special welding procedure and welding is arranged
It applies, ensures that counterpart is accurate using moulding bed and chain block cooperation；Ensure to weld using external windproof and rain proof canopy and welding ventilation protection
Connect environment；Utilize rear outer in elder generation, the welding procedure that horizontal direction both sides, both sides are staggeredly welded, control welding deformation, guarantee welding matter
Amount；Construction speed totally is improved, and reduces cost, shortens the duration.
Site welding of the present invention ensures welding environment by the way that corresponding measure is arranged；Using special welding technique, weldering is reduced
Deformation is connect, improves weldquality in whole installation process, safe and efficient, reliable in quality.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment including a series of elements includes not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
The above is only the specific implementation mode of the present invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (5)
1. a kind of converter vaporization flue site welding method, which is characterized in that include the following steps：
Step 1, preparation of construction
1) comb (1) material of evaporated flue is No. 20 boiler steels, and welding procedure qualification report and welding are formulated according to this requirement
Technique guiding book；
2) levelling of the land is compacted, and has the condition of gasification cooling flue sectional；
3) on the ground by the placement of moulding bed (3) level；
Step 2, group pair
1) the first evaporated flue (8) of segmentation and the second evaporated flue (9) are lifted respectively to moulding bed (3), utilizes beveling machine
Groove (13) processing to comb (1), ensures the verticality of bevel angle and comb (1) end, to meet welding requirements；
2) wind-proof shed (5) is set up on the outside of welding region, and operating platform (4) is set up on the inside of evaporated flue；
3) chain block (10) is utilized to adjust relative distance between the first evaporated flue (8) and the second evaporated flue (9)；
4) cleaning derusting is carried out in the port of comb (1), it is ensured that without grease, water, rust staining etc.；
Step 3, welding
1) centering, spot welding, with the fixture of same material by the first evaporated flue (8) and the corresponding comb of the second evaporated flue (9)
(1) counterpart is concordant, and spot welding；
2) entire welding procedure is outer after being in elder generation；When the weld seam of welding inside comb (1), while electrode holder (6) on the inside of welding, and
And tunger tube (7) is led to outside and is protected, to build welding surroundings；
3) ultrasound examination is carried out after the completion of butt weld (14) welding, and next procedure can be carried out after qualified；
4) it is filled at the neutral gear among the first comb (11) and the second comb (12) in parting bead (15), filling filling weld seam (2), really
Protect No leakage；
5) coating paint, welding are completed.
2. a kind of converter vaporization flue site welding method according to claim 1, which is characterized in that welded in step 1
Procedure qualification ensures the standard before welding and basis, and formulates welding procedure guiding book by qualification of welding procedure.
3. a kind of converter vaporization flue site welding method according to claim 1, which is characterized in that in step 2, prevent
The height of wind canopy (5) and operating platform (4) reaches the requirement stood for welding personnel；Wind-proof shed (5) utilizes scaffold building,
Outer laying PVC windproof and rain proof cloth, size are length 6m, width 3m, height 6m.
4. a kind of converter vaporization flue site welding method according to claim 1, which is characterized in that in step 2,
After first evaporated flue (8) and the second evaporated flue (9) are in place, the counterpart of comb (1) is specific in order to control, utilizes chain block
(10) spacing is adjusted, four sets of 5t chain blocks are respectively set in circumferencial direction in chain block (10)；Before formal welding,
It is in comb (1) port 50mm to the cleanup area in comb (1) port.
5. a kind of converter vaporization flue site welding method according to claim 1, which is characterized in that in step 3, institute
The welding sequence of outer welding procedure is welded up and down from the horizontal both sides of evaporated flue after stating in elder generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059621.5A CN108381052A (en) | 2018-01-22 | 2018-01-22 | A kind of converter vaporization flue site welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810059621.5A CN108381052A (en) | 2018-01-22 | 2018-01-22 | A kind of converter vaporization flue site welding method |
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| Publication Number | Publication Date |
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| CN108381052A true CN108381052A (en) | 2018-08-10 |
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ID=63076130
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810059621.5A Pending CN108381052A (en) | 2018-01-22 | 2018-01-22 | A kind of converter vaporization flue site welding method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814559A (en) * | 2019-09-30 | 2020-02-21 | 日照钢铁控股集团有限公司 | Method for processing forced circulation cooling flue of converter |
| CN112453744A (en) * | 2020-11-27 | 2021-03-09 | 中国十七冶集团有限公司 | Method for prefabricating and installing pipeline of converter oxygen lance valve station |
| CN114085944A (en) * | 2021-11-25 | 2022-02-25 | 中国二十冶集团有限公司 | Combined jig frame for flue system and assembling method for flue system |
| CN114799410A (en) * | 2022-05-06 | 2022-07-29 | 南通中远海运船务工程有限公司 | Forming process of ultra-large marine flange |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814559A (en) * | 2019-09-30 | 2020-02-21 | 日照钢铁控股集团有限公司 | Method for processing forced circulation cooling flue of converter |
| CN112453744A (en) * | 2020-11-27 | 2021-03-09 | 中国十七冶集团有限公司 | Method for prefabricating and installing pipeline of converter oxygen lance valve station |
| CN114085944A (en) * | 2021-11-25 | 2022-02-25 | 中国二十冶集团有限公司 | Combined jig frame for flue system and assembling method for flue system |
| CN114799410A (en) * | 2022-05-06 | 2022-07-29 | 南通中远海运船务工程有限公司 | Forming process of ultra-large marine flange |
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