CN104439972B - A kind of mammoth conveter is deducted marks two lobe preparation methods - Google Patents
A kind of mammoth conveter is deducted marks two lobe preparation methods Download PDFInfo
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- CN104439972B CN104439972B CN201410686838.0A CN201410686838A CN104439972B CN 104439972 B CN104439972 B CN 104439972B CN 201410686838 A CN201410686838 A CN 201410686838A CN 104439972 B CN104439972 B CN 104439972B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
Abstract
The invention provides a kind of mammoth conveter to deduct marks two lobe preparation methods, comprise the following steps that: 1) according to mammoth conveter design size segmentation, point lobe blanking, make mold, compressing by getting the raw materials ready under segmentation, point lobe institute；2) compressing getting the raw materials ready is carried out single-piece shaping, orthopedic by section welding, postwelding；3) cooling water channel being arranged on furnace shell epimere is carried out entirety and suppress experiment；4) dispatch from the factory and carry out overall pre-assembled before transport and carry out X, Y-axis centre line marks；5) it is that six big lobes are transported to building site and install by the dismounting of whole furnace shell.The present invention is processed by segmentation rational to furnace shell, point lobe, solves the difficulty of large-scale body of heater whole Transporting, saves fund simultaneously, reduce cost of manufacture.Dimensional requirement after being effectively controlled welding deformation and ensure that assembly precision and assembly welding.Ensure that building site assembly welding quality.Solve segmentation, Divisional carries out the difficulty of the water pressure test, decreases the workload of bulge test.
Description
Technical field
The present invention relates to mammoth conveter deduct marks two lobes make, transport, the technical field assemble behind building site, welded.
Background technology
Steelmaking converter type is a lot, and steel-making tonnage is not of uniform size.With 150 tons of furnace shells, a diameter of 7500mm, high 10070mm
As a example by.Furnace shell overall structure is cylindric, from top to bottom structure be respectively upper cone, upper transition segmental arc, middle cylinder section,
Lower cone, lower transition segmental arc, spherical furnace bottom, its whole body of heater volume is big, processing and fabricating, assembly welding required precision height,
Transport difficult.Wherein changeover portion land portions difficult forming, assembly welding deformation is big, the cooling dress in the most upper and lower two cones
Put and suppress difficulty when split, it is therefore desirable to reasonably segmentation, point lobe make.By rationally point lobe blanking, make mold,
Steel plate material is carried out hot-forming, and by using rational assembling sequence, Countermeasures, point lobe transport after assembling,
Finally for successfully completing the making task of 150 tons of converter shells.
Summary of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide a kind of mammoth conveter and deduct marks two lobe preparation methods, pass through
Segmentation rational to furnace shell, point lobe processing, solve the difficulty of large-scale body of heater whole Transporting, save fund simultaneously, reduce
Cost of manufacture.When body of heater is carried out welding in groups, use rational assembling sequence, Countermeasures, effectively control
Welding deformation the dimensional requirement after ensure that assembly precision and assembly welding.Before dispatching from the factory, furnace shell is carried out postwelding pre-assembled, it is ensured that
Building site assembly welding quality.Adopt an effective measure, in factory, cooling device is carried out overall bulge test, solve segmentation, divide
Position carries out the difficulty of the water pressure test, decreases the workload of bulge test.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of mammoth conveter is deducted marks two lobe preparation methods, comprises the following steps that:
1) according to mammoth conveter design size segmentation, point lobe blanking, mold is made, by compacting of getting the raw materials ready under segmentation, point lobe institute
Shaping；
2) compressing getting the raw materials ready is carried out single-piece shaping, orthopedic by section welding, postwelding；
3) cooling water channel being arranged on furnace shell epimere is carried out entirety and suppress experiment；
4) dispatch from the factory and carry out overall pre-assembled before transport and carry out X, Y-axis centre line marks；
5) it is that six big lobes are transported to building site and install by the dismounting of whole furnace shell.
Described make mold according to mammoth conveter design size segmentation, point lobe blanking, by pressure of getting the raw materials ready under segmentation, point lobe institute
The processing step making type includes:
1) whole converter is divided into three big sections in the vertical, and each big section of dimidiation processing, after assembly welding, whole body of heater is divided into
Six big lobe transports；Epimere includes upper cone, upper transition segmental arc, epimere cylinder, and stage casing includes two sections of cylinders, under hypomere includes
Cone, lower transition segmental arc, furnace bottom；
2) cone in two sections is divided in the horizontal 6 lobe blankings, during shaping first by every for pintongs therein two to right
Connect welded together, then with rolling song shaping on roller bed, then weld bond is cut open, already bent into folder in the middle of two block of shape
Weld one block of cone material not rolling song, then shape with roller bed rolling song；
3) two sections of cylinders are divided laterally into two lobe blankings, first pass through pressure head tire pre-bending pressure head, then rolling song becomes on roller bed
Semicircle；
4) transition segmental arc is divided into 8 lobe blankings in the horizontal up and down, makes mold according to the dimensional requirement of drawing, uses coal gas
Steel plate is heated to 1000-1050 DEG C by heating furnace, and the hydraulic press with 1200 tons and above tonnage is hot-forming；
5) furnace bottom is a part for spheroid, is divided into two sections in the vertical, and furnace bottom epimere is transversely divided into six lobe blankings, stove
Beneath section is hearth center one lobe, and blanking is round pie；Make a segment shape mold, with 1200 tons of hydraulic presses by under standby
Material cold-press moulding.
Described compressing getting the raw materials ready carried out single-piece shaping, include by the processing step that section welding, postwelding are orthopedic:
1) on floor, the full pattern of upper and lower opening, and welding baffle plate are released according to actual size with spirit level, by type cylinder
Body, cone, transition segmental arc single-lobe be positioned over ground sample, carry out single-piece orthopedic, to do not meet ground sample part flame heating,
Wire heating applies external force correction of the flank shape simultaneously；
2) the transition segmental arc single-lobe after orthopedic and furnace bottom epimere being carried out segmentation assembly welding, during assembly welding, every section is divided into two parts
Welding, after welding, is positioned over cooling meat on ground sample, uses the flat of flame heating finishing ovality and upper and lower opening after cooling
Row degree, cuts away surplus, and is supported by upper and lower opening with half " rice " word support after reaching technological requirement；
3) being divided into three big sections in the longitudinal direction of body of heater, every section of dimidiation carries out assembly welding and does postwelding correction of the flank shape, due to six big lobes it
Between weld seam be building site allowance weld, as ready welds after being passed to building site again, when preassembly in factory, to building site allowance weld
Do discontinuous welding, pre-install orthopedic after, then by discontinuous welding weld seam disconnect, other weld seams must full weld.
Described the cooling water channel being arranged on furnace shell epimere carried out entirety suppress the method for experiment be: with pipe by two lobe cones
Upper cooling water channel connects as one, and carries out the water pressure test, is cut away by technique pipe after the water pressure test is qualified.
Carry out overall pre-assembled before described transport of dispatching from the factory and carry out X, the method for Y-axis centre line marks is: in transition segmental arc
It is connected six roots of sensation H profile steel with between floor, to put down at the bottom of stationary furnace and by the survey suitable for reading of furnace bottom, assembles whole furnace shell with upright method of hull section construction；
It is welded with junction steel plate in allowance weld position, building site, and by two block plate drillings, connects fixing with bolt, nut, inspection
Look into after the weld seam of junction steel plate welds, be that six big lobes transport by the dismounting of whole furnace shell.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of mammoth conveter is deducted marks two lobe preparation methods, is processed by segmentation rational to furnace shell, point lobe, solves Large Furnace
The difficulty of body whole Transporting, saves fund simultaneously, reduces cost of manufacture.When body of heater is carried out welding in groups, use and close
The assembling sequence of reason, Countermeasures, the size after being effectively controlled welding deformation and ensure that assembly precision and assembly welding
Requirement.Before dispatching from the factory, furnace shell is carried out postwelding pre-assembled, it is ensured that building site assembly welding quality.Adopt an effective measure, to cold in factory
Radiator cooler carries out overall bulge test, solves segmentation, Divisional carries out the difficulty of the water pressure test, decreases bulge test
Workload.
Accompanying drawing explanation
Fig. 1 is overall structure and the stepwise schematic views of furnace shell in the present invention.
Fig. 2 is the front view of transition segmental arc machining mould.
Fig. 3 is the left view of transition segmental arc machining mould.
Fig. 4 is mounted in the attachment structure schematic diagram that the cooling water channel entirety of furnace shell epimere is suppressed.
In figure: 1. on furnace shell epimere .2. furnace shell stage casing .3. furnace shell hypomere .4-1. upper cone .4-2. lower cone .5-1.
Cross horizontal position welding seam in cross joint .8-2. building site, cylinder .8-1. building site, transition segmental arc .6. epimere cylinder .7. stage casing under segmental arc .5-2..
9-1. furnace bottom epimere .9-2. hearth center .10. pipe .11. cooling water channel.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, it should be noted that the enforcement of the present invention be not limited to
Under embodiment.
A kind of mammoth conveter is deducted marks two lobe preparation methods, comprises the following steps that:
1) according to mammoth conveter design size segmentation, point lobe blanking, mold is made, by compacting of getting the raw materials ready under segmentation, point lobe institute
Shaping；
2) compressing getting the raw materials ready is carried out single-piece shaping, orthopedic by section welding, postwelding；
3) cooling water channel being arranged on furnace shell epimere is carried out entirety and suppress experiment；
4) dispatch from the factory and carry out overall pre-assembled before transport and carry out X, Y-axis centre line marks；
5) it is that six big lobes are transported to building site and install by the dismounting of whole furnace shell.
According to mammoth conveter design size segmentation, point lobe blanking, make mold, compressing by getting the raw materials ready under segmentation, point lobe institute
Processing step include:
1) whole converter is divided into three big sections in the vertical, and each big section of dimidiation processing, after assembly welding, whole body of heater is divided into
Six big lobe transports；Epimere 1 includes upper cone 4-1, upper transition segmental arc 5-1, epimere cylinder 6, and stage casing includes two sections of cylinders 7,
Hypomere includes lower cone 4-2, lower transition segmental arc 5-2, furnace bottom；
2) cone in two sections is divided in the horizontal 6 lobe blankings, during shaping first by every for pintongs therein two to right
Connect welded together, then with rolling song shaping on roller bed, then weld bond is cut open, already bent into folder in the middle of two block of shape
Weld one block of cone material not rolling song, then shape with roller bed rolling song；
This group die mould method can be saved pressure head material, improve the utilization rate of steel, cost-effective.
3) two sections of cylinders are divided laterally into two lobe blankings, first pass through pressure head tire pre-bending pressure head, then rolling song becomes on roller bed
Semicircle；
4) transition segmental arc is divided into 8 lobe blankings in the horizontal up and down, makes mold according to the dimensional requirement of drawing, uses coal gas
Steel plate is heated to 1000-1050 DEG C by heating furnace, and the hydraulic press with 1200 tons and above tonnage is hot-forming；
5) furnace bottom is a part for spheroid, is divided into two sections in the vertical, and furnace bottom epimere 9-1 is transversely divided into six lobe blankings,
Furnace bottom hypomere is hearth center 9-2 mono-lobe, and blanking is round pie；Make a segment shape mold, will with 1200 tons of hydraulic presses
Get the raw materials ready under Suo cold-press moulding.
Compressing getting the raw materials ready is carried out single-piece shaping, includes by the processing step that section welding, postwelding are orthopedic:
1) on floor, the full pattern of upper and lower opening, and welding baffle plate are released according to actual size with spirit level, by type cylinder
Body, cone, transition segmental arc single-lobe be positioned over ground sample, carry out single-piece orthopedic, to do not meet ground sample part flame heating,
Wire is heated to 700-800 DEG C and applies external force correction of the flank shape simultaneously；
The internal flame of the flame neutral flame to be used of heating, must could heat next after every wire heating after it cools down
Line.
2) the transition segmental arc single-lobe after correction of the flank shape and furnace bottom epimere 9-1 being carried out segmentation assembly welding, during assembly welding, every section is divided into two
Part welding, after welding, is positioned over cooling meat on ground sample, uses flame heating finishing ovality and upper and lower opening after cooling
The depth of parallelism, cut away surplus after reaching technological requirement, and support with half " rice " word upper and lower opening is supported；
Support and select the square steel of 200mm × 200mm or the H profile steel of 300mm × 300mm × 16mm to be advisable.
3) being divided into three big sections in the longitudinal direction of body of heater, every section of dimidiation carries out assembly welding and does postwelding correction of the flank shape, due to six big lobes it
Between weld seam be building site allowance weld, see that the 8-1 in Fig. 1,8-2 are building site allowance weld, as ready enters after being passed to building site again
Row welding, when preassembly in factory, does discontinuous welding, after prepackage correction of the flank shape, then is disconnected by discontinuous welding weld seam building site allowance weld,
Other weld seams must full weld.
Assembly welding uses upside-down method of hull-section construction, uses symmetrical, segmented multi-level multi-pass welding.Notice that " rice " word props up when carrying out weld seam welding
The weld bond of position, support part does not ftractures, and notes deformation, adjusts welding sequence at any time, it is ensured that dimensional requirement.
The cooling water channel being arranged on furnace shell epimere carried out entirety suppress the method for experiment be: with pipe 10 by two lobe upper cones
Cooling water channel on 4-1 connects as one, and carries out the water pressure test, after the water pressure test is qualified, technique pipe 10 is cut away and is beaten
Mill otch.
Dispatch from the factory carry out overall pre-assembled before transport and carry out X, the method for Y-axis centre line marks is: on transition segmental arc and floor
Between connect six roots of sensation H profile steel, to put down at the bottom of stationary furnace and by the survey suitable for reading of furnace bottom, assemble whole furnace shell with upright method of hull section construction；In work
Allowance weld position, ground is welded with junction steel plate, and by two block plate drillings, connects fixing with bolt, nut, the company of inspection
Connect after the weld seam of steel plate welds, be that six big lobes transport by the dismounting of whole furnace shell.
Body of heater is transported to after building site Combination Welding installs, to be reserved in junction steel plate and " rice " of the assembling of commissure, building site
Word supports and cuts away, and whole converter installing engineering terminates.
Furnace shell blanking selects Q345B sheet material to use after UT flaw detection is qualified.
Cone section part is carried out unfolding calculation before upper lower cone blanking, draw real figure with CAD, find out bus true length and draw exhibition
Open figure, and mark accurate data.Owing to cone is to divide equally six lobes, therefore the actual graphical of a wherein lobe is printed, carry out
Numerical control programming, after cutting, every lobe opens two-sided asymmetric groove by technique, and will go out metallic luster with grinder buffing at groove.
Furnace shell cylinder and cone segments, by pressure head tire pressure type, save substantial amounts of pressure head material and improve the utilization rate of steel, fall
Low cost.
Transition segmental arc is spherical arc up and down, point 8 lobe blankings, and the spherical method of development of the method for deploying of every lobe uses CAD system
The real figure of a lobe in work out eight lobes, and leave certain secondary cut surplus.
Changeover portion part is two bending directions, so cannot complete with single equipment, it is necessary to make and figure paper size
Require the mold (see Fig. 2, Fig. 3) being consistent, hot-forming rear cooling, carry out secondary cut after cooling and become clean material, process
Check that size is the most qualified with card model.
Owing to furnace bottom is a part for spheroid, therefore the making of mold to be fabricated to segment shape, depth ratio design chi according to technique
Very little outline is deep, in order to avoid producing resilience, does not reaches the size of drawing requirement, inside from the peripheral circular shape of cake during swaging
Side stretches swaging, and the compacting that partly overlaps when every time suppressing with swaging last time, in order to avoid occurring rough and uneven in surface, during each swaging
Want uniformity to pressure, and the moment checks with card model, meets figure paper size until being pressed into.
Furnace shell is transported to building site when carrying out integral assembly welding, and each section of cross joint 8-1 must stagger assembly welding, can make welding junction during assembling
For step shiplap, as shown in Figure 1.After so can first overlapping when assemble in site, then adjust the levelness of bottom surface,
Improve operating efficiency, integral installation efficiency can save time three and half time.
Claims (3)
1. a mammoth conveter is deducted marks two lobe preparation methods, it is characterised in that comprise the following steps that:
1) according to mammoth conveter design size segmentation, point lobe blanking, mold is made, by compacting of getting the raw materials ready under segmentation, point lobe institute
Shaping；Processing step includes:
A) whole converter is divided into three big sections, each big section of dimidiation make in the vertical, and after assembly welding, whole body of heater is divided into
Six big lobe transports；Epimere includes upper cone, upper transition segmental arc, epimere cylinder, stage casing cylinder, hypomere include lower cone, under
Transition segmental arc, furnace bottom；
B) cone in two sections is divided in the horizontal 6 lobe blankings, during shaping first by every for pintongs therein two to right
Connect welded together, then with rolling song shaping on roller bed, then weld bond is cut open, already bent into folder in the middle of two block of shape
Weld one block of cone material not rolling song, then shape with roller bed rolling song；
C) two sections of cylinders are divided laterally into two lobe blankings, first pass through pressure head tire pre-bending pressure head, then rolling song becomes on roller bed
Semicircle；
D) transition segmental arc is divided into 8 lobe blankings in the horizontal up and down, makes mold according to the dimensional requirement of drawing, uses coal gas
Steel plate is heated to 1000-1500 DEG C by heating furnace, and the hydraulic press with 1200 tons and above tonnage is hot-forming；
E) furnace bottom is a part for spheroid, is divided into two sections in the vertical, and furnace bottom epimere is transversely divided into six lobe blankings, stove
Beneath section is hearth center one lobe, and blanking is round pie；Make a segment shape mold, with 1200 tons of hydraulic presses by under standby
Material cold-press moulding；
2) compressing getting the raw materials ready is carried out single-piece shaping, orthopedic by section welding, postwelding；Processing step includes:
A) on floor, the full pattern of upper and lower opening, and welding baffle plate are released according to actual size with spirit level, by type cylinder
Body, cone, transition segmental arc single-lobe be positioned over ground sample, carry out single-piece orthopedic, to do not meet ground sample part flame heating,
Wire heating applies external force correction of the flank shape simultaneously；
B) the transition segmental arc single-lobe after orthopedic and furnace bottom epimere being carried out segmentation assembly welding, during assembly welding, every section is divided into two parts
Welding, after welding, is positioned over cooling meat on ground sample, uses the flat of flame heating finishing ovality and upper and lower opening after cooling
Row degree, cuts away surplus, and is supported by upper and lower opening with half " rice " word support after reaching technological requirement；
C) being divided into three big sections in the longitudinal direction of body of heater, every section of dimidiation carries out assembly welding and does postwelding correction of the flank shape, due to six big lobes
Between weld seam be building site allowance weld, as ready welds after being passed to building site again, when preassembly in factory, weldering reserved to building site
Seam do discontinuous welding, pre-install orthopedic after, then by discontinuous welding weld seam disconnect, other weld seams must full weld；
3) cooling water channel being arranged on furnace shell epimere is carried out entirety and suppress experiment；
4) dispatch from the factory and carry out overall pre-assembled before transport and carry out X, Y-axis centre line marks；
5) it is that six big lobes are transported to building site and install by the dismounting of whole furnace shell.
A kind of mammoth conveter the most according to claim 1 is deducted marks two lobe preparation methods, it is characterised in that described is right
It is arranged on the cooling water channel of furnace shell epimere and carries out entirety and suppress the method for experiment and be: with pipe by cooling water channel in two lobe cones even
Connect and be integrated, carry out the water pressure test, after the water pressure test is qualified, technique pipe is cut away.
A kind of mammoth conveter the most according to claim 1 is deducted marks two lobe preparation methods, it is characterised in that described goes out
Carry out overall pre-assembled before factory's transport and carry out X, the method for Y-axis centre line marks is: connect between transition segmental arc and floor
Connect six roots of sensation H profile steel, to put down at the bottom of stationary furnace and by the survey suitable for reading of furnace bottom, assemble whole furnace shell with upright method of hull section construction；Reserved in building site
It is welded with junction steel plate at position while welding, and by two block plate drillings, connects fixing with bolt, nut, check junction steel plate
Weld seam weld after, by whole furnace shell dismounting be six big lobes transport.
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| CN106271404B (en) * | 2016-08-15 | 2018-08-24 | 鞍钢重型机械有限责任公司 | A kind of production method of large size Water distribution circular pipe |
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| CN112372241B (en) * | 2020-10-22 | 2022-08-26 | 山西汾西重工有限责任公司 | Method for processing large thin-wall bowl-shaped shell and oil bag protective cover |
| CN112372249B (en) * | 2020-11-13 | 2022-05-10 | 鞍钢建设集团有限公司 | Process method for one-time clean material cutting and hot press molding of double-curved-surface-section furnace shell of hot blast stove |
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