CN109396614A - The nonstorage calorifier and welding method of pressure vessel thick-wall cylinder girth welding - Google Patents
The nonstorage calorifier and welding method of pressure vessel thick-wall cylinder girth welding Download PDFInfo
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- CN109396614A CN109396614A CN201811522757.1A CN201811522757A CN109396614A CN 109396614 A CN109396614 A CN 109396614A CN 201811522757 A CN201811522757 A CN 201811522757A CN 109396614 A CN109396614 A CN 109396614A
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- 238000003466 welding Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 94
- 238000005485 electric heating Methods 0.000 claims abstract description 75
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 38
- 239000010935 stainless steel Substances 0.000 claims abstract description 37
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention discloses the nonstorage calorifiers and welding method of a kind of pressure vessel thick-wall cylinder girth welding, it includes with having gap around the annular-heating circle being arranged on the outside of cylinder, it is detachably connected to the lower section of annular-heating circle and the adjustment base for adjusting gap distance between the inner wall of annular-heating circle and the outer wall of cylinder, annular-heating circle includes the first noumenon detachably connected with adjustment base, second ontology detachably connectable with the first noumenon, the inside of the first noumenon and the inside of the second ontology are provided with several heat-resistance stainless steel electric heating tubes for preheating and being heated in welding, several far infrared dark fund electric heating tubes for disappear after welding hydrogen or local heat treatmet.The present invention, structure is simple, light-weight, small in size, heating rate is fast, and radiation position is heated evenly, stability is good, improves welding quality, improves production efficiency, and energy-saving and emission-reduction reduce processing cost.
Description
Technical field
The present invention relates to the nonstorage calorifiers and welding method of a kind of pressure vessel thick-wall cylinder girth welding, especially relate to
And a kind of nonstorage calorifier and weldering of pressure vessel heavy wall carbon steel circular cylinder body or thick-wall chromium-molybdenum steel circular cylinder body girth welding
Connect method.
Background technique
With domestic petroleum refinery, large-scale ethylene project, the development and utilization of biomass incineration technology, large scale chemical plant
And power generator needs a large amount of high-temperature steam to be used to that the thermal energy of whole device is pushed to supply, the high temperature and pressure drum in device
It widely applies and is used to collect and distribute high temperature and high pressure steam.Due to worst hot case, drum material uses heat resisting steel material；Due to
High pressure operating condition, boiler barrel cylinder is thicker, between general 50~100mm.Since material belongs to thicker heat resisting steel, crackle tendency when welding
Seriously.It is solderable that Circumferential Welds In Cylinders welding position must be preheating to 150 degree of right and lefts, and while welding needs 150 degree of continuous heating
It controls and welding position cannot be allowed to scatter and disappear, circumferential weld needs otherwise to weld immediately in 300 degree or so temperature dehydrogenations after welding
Seam can cause Hydrogen Brittleness Phenomena, substantially reduce the intensity of weld seam, to weld cracking is caused when serious, cause great equipment safety
Accident.
Traditional heating method is heated using 1/3 circle of circumferential weld bottom with flame-thrower nozzle, since flame is heated by wind speed, gas cylinder
The factors such as pressure, flame-thrower nozzle long-time service failure blocking influence, and flame physical characteristic flare can only be at the top of flare
Effective heating area domain, Circumferential Welds In Cylinders top and two side positions belong to flame heating blind area, at a temperature of flame leaves workpiece greater than 1 meter
20 degree or so of drop, flame leave greater than 2 meters temperature of workpiece and decline 50 degree or so.Practical flame heating effect is very poor, is unable to satisfy
Preheating requirement.Another heating method is porcelain block radiant heating, and porcelain block must be in close contact with cylinder, porcelain block heating-wire
Connection, porcelain block outside also need covering and heat insulating cotton, and otherwise heat loss is extremely serious, and Circumferential Welds In Cylinders welding circular cylinder body is sent out when rotating
Thermal wire can wind cylinder, and conducting wire can be torn often leads to electric leakage accident, and practical large scale equipment use is extremely inconvenient, such
Mode is suitable for the case where not rotating when small device or Circumferential Welds In Cylinders welding.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of the quick of pressure vessel thick-wall cylinder girth welding
Heating device and welding method.
In order to reach the goals above, the technical solution adopted by the present invention is that: a kind of pressure vessel thick-wall cylinder girth welding
Nonstorage calorifier, it includes with having gap around annular-heating circle on the outside of cylinder is arranged in, is detachably connected to
The lower section of annular-heating circle and the adjustment base for being used to adjust gap distance between the inner wall of annular-heating circle and the outer wall of cylinder,
Annular-heating circle includes the first noumenon detachably connected with adjustment base, detachably connectable with the first noumenon second
The inside of ontology, the inside of the first noumenon and the second ontology is provided with several for preheating and being heated in welding
Heat-resistance stainless steel electric heating tube, for several far infrared dark fund electric heating tubes of disappear after welding hydrogen or local heat treatmet.
Further, heat-resistance stainless steel electric heating tube compares far infrared dark fund electric heating tube closer in annular-heating circle
Wall.
Further, each heat-resistance stainless steel electric heating tube is arranged along the axis direction of annular-heating circle, and all is resistance to
Hot stainless steel electric heating tube is uniformly distributed around the central axis of annular-heating circle；Each far infrared dark fund electric heating tube is along ring
The axis direction of shape heating coil is arranged, and all far infrared dark fund electric heating tubes uniformly divide around the central axis of annular-heating circle
Cloth.
Further, be equably provided with multiple infrared temperature measurement apparatus on annular-heating circle, infrared temperature measurement apparatus, it is heat-resisting not
Rust steel electric heating tube, far infrared dark fund electric heating tube are connected with power control cabinet.
Further, heat-resistance stainless steel electric heating tube and throwing of the far infrared dark fund electric heating tube on annular-heating circle inner wall
Shadow is arranged for interleaved.
Further, the top of annular-heating circle is arranged in the second ontology.
Further, the heating temperature of heat-resistance stainless steel electric heating tube is 150 DEG C ± 20 DEG C；Far infrared dark fund electric heating tube
Heating temperature when disappearing hydrogen is 300 DEG C ± 50 DEG C, and heating temperature of the far infrared dark fund electric heating tube in local heat treatmet is
670℃±20℃。
The present invention also provides another technical solutions: a kind of based on the fast of above-mentioned pressure vessel thick-wall cylinder girth welding
The welding method of fast heating device, comprising the following steps:
1) gap distance between the inner wall of annular-heating circle and the outer wall of cylinder, is adjusted by mobile adjustment base, make everywhere away from
From consistent, open heat-resistance stainless steel electric heating tube and the circumferential weld region of cylinder is carried out to be preheated to 150 DEG C ± 20 DEG C；
2), heat-resistance stainless steel electric heating tube continues to heat and keep temperature at 150 DEG C ± 20 DEG C, by ring to the circumferential weld region of cylinder
Second ontology of shape heating coil is removed from the first noumenon, so that the circumferential weld of cylinder is had part exposing, to ring while barrel body rotation
Seam is welded；
3) after, welding, the second ontology is installed again with the first noumenon, opens far infrared dark fund electric heating tube to commissure
Heating carries out disappear hydrogen or local heat treatmet, disappear hydrogen when temperature be 300 DEG C ± 50 DEG C, temperature is 670 DEG C ± 20 when local heat treatmet
℃。
Further, it in step 3, keeps opening the electric heating of far infrared dark fund while heat-resistance stainless steel electric heater for heating
Pipe.
Further, the heating temperature of heat-resistance stainless steel electric heating tube, far infrared dark fund electric heating tube is by being mounted on ring
Infrared temperature measurement apparatus on shape heating coil is to detect and by power control cabinet control.
By using above-mentioned technical proposal, the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding of the present invention and weldering
Method is connect, is compared with the prior art had the advantage that
1), structure is simple, light-weight, small in size, heating rate is fast, stability is good；
2), heat-resistance stainless steel electric heating tube and far infrared dark fund electric heating tube are circular layout, so that the entire circumferential weld of cylinder is heated
Face homogeneous heating；
3), with a certain distance from annular-heating circle has from cylinder, enable Circumferential Welds In Cylinders that welding is freely rotated when welding；
4), heat-resistance stainless steel electric heating tube in inside, which is opened, is suitable for the lower preheating temperature of workpiece, and outside far infrared dark fund electricity adds
Heat pipe opens disappear hydrogen or the local heat treatmet for being suitable for workpiece higher temperature, achievees the effect that energy-saving and emission-reduction；
5), ring heater is using single branch heating tube arrangement wiring, the heating tube that can be damaged with quick-replaceable, without as passing
System needs replacing entire heat block, achievees the effect that drop this section money；
6), adjustment base designs for universal architecture, and the annular-heating circle for only needing to change top different size can realize difference
Manufacturing cost is saved in the heating of sized circular cylinder；
7), annular-heating circle installs infrared temperature probe, cooperates power control cabinet, can accomplish more accurate power output control,
It prevents Circumferential Welds In Cylinders heating surface temperature too high or too low, achievees the effect that energy-saving and emission-reduction.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding in the present invention；
Attached drawing 2 is the flow diagram of the welding method of pressure vessel thick-wall cylinder girth welding in the present invention.
Figure label are as follows:
1, cylinder；2, annular-heating circle；21, the first noumenon；22, the second ontology；3, heat-resistance stainless steel electric heating tube；4, far infrared
Dark fund electric heating tube；5, adjustment base；6, infrared temperature measurement apparatus.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art.
Referring to attached drawing 1, the nonstorage calorifier of the pressure vessel thick-wall cylinder girth welding in the present embodiment, it includes tool
There is free unoccupied place to be used in combination around the annular-heating circle 2 that 1 outside of cylinder is arranged in, the lower section for being detachably connected to annular-heating circle 2
In adjust annular-heating circle 2 inner wall and cylinder 1 outer wall between gap distance adjustment base 5, annular-heating circle 2 include with
The detachably connected the first noumenon 21 of adjustment base 5 and the second detachably connectable ontology 22 of the first noumenon 21, first
The inside of ontology 21 and the inside of the second ontology 22 be provided with for preheat and heated in welding several are heat-resisting
Stainless steel electric heating tube 3, for several far infrared dark fund electric heating tubes 4 of disappear after welding hydrogen or local heat treatmet.
In a kind of highly preferred embodiment, heat-resistance stainless steel electric heating tube 3 compares far infrared dark fund electric heating tube 4
Closer to the inner wall of annular-heating circle 2.
Each heat-resistance stainless steel electric heating tube 3 is arranged along the axis direction of annular-heating circle 2, all heat-resistance stainless steels
Electric heating tube 3 is uniformly distributed around the central axis of annular-heating circle 2；Similarly, each far infrared dark fund electric heating tube 4 along
The axis direction of annular-heating circle 2 is arranged, central axis of all far infrared dark fund electric heating tubes 4 around annular-heating circle 2
It is uniformly distributed.In the present embodiment, heat-resistance stainless steel electric heating tube 3 and far infrared dark fund electric heating tube 4 are in 2 inner wall of annular-heating circle
On be arranged with being projected as interleaved.
The heating temperature of heat-resistance stainless steel electric heating tube 3 is 150 DEG C ± 20 DEG C；Far infrared dark fund electric heating tube 4 is in the hydrogen that disappears
When heating temperature be 300 DEG C ± 50 DEG C, heating temperature of the far infrared dark fund electric heating tube 4 in local heat treatmet be 670 DEG C
±20℃。
Multiple infrared temperature measurement apparatus 6 are equably provided on annular-heating circle 2, for measuring heating temperature.Infrared measurement of temperature
Device 6, heat-resistance stainless steel electric heating tube 3, far infrared dark fund electric heating tube 4 are connected with power control cabinet, and infrared temperature measurement apparatus 6 will
Temperature feedback is measured to power control cabinet, power control cabinet adjusts control heat-resistance stainless steel electric heating tube 3, far infrared dark fund according to feedback information
Electric heating tube 4 heats.Specifically, far infrared dark fund electric heating tube 4 and heat-resistance stainless steel electric heating tube 3 form six groups of independent circuits
Circuit and power control cabinet connect the common electrical heating power that adjusts and export, to realize that 1 girth welding spot temperature of cylinder controls.
The internal diameter of annular-heating circle 2 suitably increases production according to the outer diameter of cylinder 1, makes the inner wall and cylinder of annular-heating circle 2
There is gap between the outer wall of body 1, guarantee that circular cylinder body 1 (can be not drawn into) in turning rolls in attached drawing when 1 girth welding of cylinder
On be freely rotated, and heat radiation reaches optimum efficiency.
The top of annular-heating circle 2 is arranged in second ontology 22, and the size of the second ontology 22 should not be too large, and is easy to cause temperature
Degree scatters and disappears, as long as size is suitable for welding operation, can be not specifically limited here determines according to actual conditions.The
Connection structure between two ontologies 22 and the first noumenon 21 should make the two quickly can remove and install, and can be used in the prior art
Suitable structure.
Referring to attached drawing 2, the present embodiment additionally provides a kind of based on the quick of above-mentioned pressure vessel thick-wall cylinder girth welding
The welding method of heating device, comprising the following steps:
1) movement of annular-heating circle 2, is driven by mobile adjustment base 5, to adjust the inner wall and cylinder 1 of annular-heating circle 2
Outer wall between gap distance, make everywhere distance it is consistent, open heat-resistance stainless steel electric heating tube 3 and the circumferential weld region of cylinder carried out
It is preheated to 150 DEG C ± 20 DEG C.
2), heat-resistance stainless steel electric heating tube 3 continues to heat and keep temperature at 150 DEG C ± 20 to the circumferential weld region of cylinder
DEG C, the second ontology 22 of annular-heating circle 2 is removed from the first noumenon 21, the circumferential weld of cylinder is made to have part exposing, at 1 turn of cylinder
Circumferential weld is welded while dynamic.In the present embodiment, cylinder 1 is driven to rotate using turning rolls, welding manner uses submerged arc certainly
Dynamic weldering.
3) after, welding, the second ontology 22 is installed again with the first noumenon 21, opens far infrared dark fund electric heating tube
The heating of 4 pairs of commissures carries out disappear hydrogen or local heat treatmet, disappear hydrogen when temperature be 300 DEG C ± 50 DEG C, temperature is when local heat treatmet
670℃±20℃.Preferably, far infrared dark fund electric heating tube 4 is opened while keeping heat-resistance stainless steel electric heating tube 3 to heat.
In above-mentioned all steps, heat-resistance stainless steel electric heating tube 3, the heating temperature of far infrared dark fund electric heating tube 4 are logical
The infrared temperature measurement apparatus 6 being mounted on annular-heating circle 2 is crossed to detect and by power control cabinet control.
The nonstorage calorifier and welding method of this pressure vessel thick-wall cylinder girth welding, structure is simple, light-weight, body
Product is small, heating rate is fast, and radiation position is heated evenly, stability is good, can be realized efficient batch production circular cylinder body circular seam welding
The preheating of socket part position, the control of the hydrogen that disappears, local heat treatmet temperature, improve the special material welding quality of the thick-wall cylinders such as drum, mention
High efficiency, energy-saving and emission-reduction reduce processing cost.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of nonstorage calorifier of pressure vessel thick-wall cylinder girth welding, it is characterised in that: it includes with gap
Around the annular-heating circle (2) being arranged on the outside of the cylinder (1), it is detachably connected under the annular-heating circle (2)
Side and the adjustment base for being used to adjust gap distance between the inner wall of the annular-heating circle (2) and the outer wall of the cylinder (1)
(5), the annular-heating circle (2) include the first noumenon (21) detachably connected with the adjustment base (5), with it is described
Detachably connectable the second ontology (22) of the first noumenon (21), the inside of the first noumenon (21) and the second ontology (22)
Inside be provided with for preheat and welding when heated several heat-resistance stainless steel electric heating tubes (3), for welding
Disappear several far infrared dark fund electric heating tubes (4) of hydrogen or local heat treatmet after connecing.
2. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: institute
The heat-resistance stainless steel electric heating tube (3) stated compares far infrared dark fund electric heating tube (4) closer to the interior of the annular-heating circle (2)
Wall.
3. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: every
A heat-resistance stainless steel electric heating tube (3) is arranged along the axis direction of the annular-heating circle (2), and all is described resistance to
Hot stainless steel electric heating tube (3) is uniformly distributed around the central axis of the annular-heating circle (2)；Each far infrared is black
Golden electric heating tube (4) is arranged along the axis direction of the annular-heating circle (2), all far infrared dark fund electric heating tubes
(4) central axis around the annular-heating circle (2) is uniformly distributed.
4. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: institute
It is equably provided with multiple infrared temperature measurement apparatus (6) on the annular-heating circle (2) stated, it is the infrared temperature measurement apparatus (6), heat-resisting
Stainless steel electric heating tube (3), far infrared dark fund electric heating tube (4) are connected with power control cabinet.
5. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: institute
The heat-resistance stainless steel electric heating tube (3) stated is projected as on annular-heating circle (2) inner wall with far infrared dark fund electric heating tube (4)
Interleaved it is arranged.
6. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: institute
Top of the second ontology (22) setting stated in annular-heating circle (2).
7. the nonstorage calorifier of pressure vessel thick-wall cylinder girth welding according to claim 1, it is characterised in that: institute
The heating temperature for stating heat-resistance stainless steel electric heating tube (3) is 150 DEG C ± 20 DEG C；The far infrared dark fund electric heating tube (4) exists
Disappear hydrogen when heating temperature be 300 DEG C ± 50 DEG C, heating of the far infrared dark fund electric heating tube (4) in local heat treatmet
Temperature is 670 DEG C ± 20 DEG C.
8. a kind of welding side of the nonstorage calorifier based on pressure vessel thick-wall cylinder girth welding described in claim 1
Method, it is characterised in that: the following steps are included:
1) it, is adjusted by mobile adjustment base (5) between the inner wall of the annular-heating circle (2) and the outer wall of the cylinder (1)
Gap distance makes everywhere apart from the circumferential weld region progress for unanimously, opening the heat-resistance stainless steel electric heating tube (3) to the cylinder
It is preheated to 150 DEG C ± 20 DEG C；
2), the heat-resistance stainless steel electric heating tube (3) continues to heat and keep temperature at 150 DEG C to the circumferential weld region of the cylinder
± 20 DEG C, the second ontology (22) of the annular-heating circle (2) is removed from the first noumenon (21), the circumferential weld of cylinder is made to have part
Expose, circumferential weld is welded while the cylinder (1) rotates；
3) after, welding, second ontology (22) is installed again with the first noumenon (21), opens the far infrared dark fund
Electric heating tube (4) to commissure heating carry out disappear hydrogen or local heat treatmet, disappear hydrogen when temperature be 300 DEG C ± 50 DEG C, at localized heat
Temperature is 670 DEG C ± 20 DEG C when reason.
9. welding method according to claim 8, it is characterised in that: in the step 3, keep the heat-resistance stainless steel electricity
Heating tube (3) opens the far infrared dark fund electric heating tube (4) while heating.
10. welding method according to claim 8, it is characterised in that: the heat-resistance stainless steel electric heating tube (3), described
The heating temperature of far infrared dark fund electric heating tube (4) passes through the infrared temperature measurement apparatus (6) that is mounted on the annular-heating circle (2)
To detect and be controlled by power control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522757.1A CN109396614A (en) | 2018-12-13 | 2018-12-13 | The nonstorage calorifier and welding method of pressure vessel thick-wall cylinder girth welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522757.1A CN109396614A (en) | 2018-12-13 | 2018-12-13 | The nonstorage calorifier and welding method of pressure vessel thick-wall cylinder girth welding |
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| Publication Number | Publication Date |
|---|---|
| CN109396614A true CN109396614A (en) | 2019-03-01 |
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ID=65458967
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|---|---|---|---|
| CN201811522757.1A Pending CN109396614A (en) | 2018-12-13 | 2018-12-13 | The nonstorage calorifier and welding method of pressure vessel thick-wall cylinder girth welding |
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-
2018
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|---|---|---|---|---|
| JPS5779113A (en) * | 1980-11-04 | 1982-05-18 | Kusakabe Kikai Kk | Gaseous frame type heating method |
| CN101906522A (en) * | 2010-05-26 | 2010-12-08 | 东方电气(广州)重型机器有限公司 | Circular seam local heat-treatment heater for nuclear steam generator |
| CN203429214U (en) * | 2013-09-03 | 2014-02-12 | 卓然(靖江)设备制造有限公司 | Heating device for local thermal treatment of pipeline |
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| CN206425715U (en) * | 2016-12-15 | 2017-08-22 | 中国水利水电第十二工程局有限公司 | Heater |
| CN206393091U (en) * | 2017-01-20 | 2017-08-11 | 中国葛洲坝集团机电建设有限公司 | Adjustable cylinder heater |
| CN209157360U (en) * | 2018-12-13 | 2019-07-26 | 张家港市江南锅炉压力容器有限公司 | The nonstorage calorifier of pressure vessel thick-wall cylinder girth welding |
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