CN107904388A - A kind of electric welding machine discharge port heat-insulating method - Google Patents
A kind of electric welding machine discharge port heat-insulating method Download PDFInfo
- Publication number
- CN107904388A CN107904388A CN201711065513.0A CN201711065513A CN107904388A CN 107904388 A CN107904388 A CN 107904388A CN 201711065513 A CN201711065513 A CN 201711065513A CN 107904388 A CN107904388 A CN 107904388A
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- China
- Prior art keywords
- steel pipe
- insulating layer
- sleeve
- discharge port
- welding machine
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of electric welding machine discharge port heat-insulating method, second insulating layer is engaged with the first insulating layer, so that occur multiple temperature provinces gradually successively decreased in sleeve on steel pipe, so that steel pipe is overall to keep weld strength in a stable temperature environment, avoid steel pipe seam from causing remitted its fury because of the change of temperature, reduce steel pipe seam desoldering phenomenon and occur.
Description
Technical field
The present invention relates to a kind of argon arc welding machine, in particular to a kind of electric welding machine discharge port heat-insulating method.
Background technology
Stainless steel welded pipe requires fusion penetration through welding, and oxide-free is mingled with, and heat affected area is as small as possible, and tungsten inert gas is protected
The argon arc welding of shield has well adapting to property, and welding quality is high, through welding performance is good, its product is in chemical industry, nuclear industry and food etc.
It is used widely in industry.It is the shortcoming of argon arc welding that speed of welding is not high, to improve speed of welding, foreign study exploitation
A variety of methods.Wherein applied in production using the welding method of the more welding torches of multi-electrode by the development of single electrode list welding torch.Generally
Using the argon arc welding of three electrode welding torches, welded still pipe wall thickness S >=2mm, speed of welding improves 3-4 times than single welding torch, welding quality
Also it is improved.The steel pipe that can weld bigger wall thickness is combined in the weldering of argon arc welding and plasma, in addition, in argon gas 5-10% hydrogen
Gas, then using high frequency pulse current welding power supply, can also improve speed of welding.First by prepare welding connector handle well, using with
The filling metal that the welding wire of 904L materials of the same race is done, weld seam is poured when welding with cold water, welding temperature control 80 DEG C with
Under, more than 45~50 cm per minutes, weld seam breadth depth ratio is maintained between 1.5: 1~2: 1 speed of welding, and weldment thickness≤
12mm.Then acid wash passivation processing is carried out in face of weld.Its advantage is to weld at low temperature, is not occurred inside 904L stainless steels
Conversion between molecule, avoids the phenomenon of brittleness conversion, production when it also avoid welding the defects of intercrystalline corrosion, fire check
It is raw, control the overall deformation of weldment.
During steel-pipe welding, to ensure good welding effect, generally by soldering tip and treat that Coiling Welded Pipe is placed in semiclosed sealing and fills
In putting, while being conveniently passed through protective gas, Mars splashes when also avoiding welding.But finished in steel pipe partial welding
Afterwards, weld seam is directly exposed in air, due to air themperature and the difference of weld seam own temperature, can make it that weld seam is direct by high temperature
To low-temperature transformation, during which steel pipe seam is because the cataclysm of temperature, can reduce the intensity of itself so that the stability in use drop of steel pipe
It is low, steel pipe seam desoldering can be directly contributed when serious.
The content of the invention
It is an object of the invention to provide a kind of electric welding machine discharge port heat-insulating method, steel pipe seam is avoided because of temperature
Change and cause remitted its fury, reduce steel pipe seam desoldering phenomenon and occur.
The purpose of the present invention is achieved through the following technical solutions：
A kind of electric welding machine discharge port heat-insulating method, comprises the following steps, and welds the steel pipe finished first by semitight
The outlet of structure is sent out, and is entered directly into sleeve, the commissure of the first insulating layer face steel pipe, and the first insulating layer is in circle
Arc, can with to agreeing with, but because just weld the steel pipe own temperature height finished, and weld occurs that part is convex outside steel pipe
Rise, therefore the first insulating layer is spaced a distance with commissure, the temperature of steel pipe seam can either be allowed to decline naturally, also all
Protrusion can be avoided to cause certain damage to the first insulating layer；Set on sleeve lining on remaining 9/10ths inner periphery
Have the second insulating layer, and the thickness of the second insulating layer is gradually reduced along another extreme direction of sleeve, may be such that steel pipe except commissure with
Outer part keeps certain temperature within a period of time, and the second insulating layer is engaged with the first insulating layer so that sleeve
Occur multiple temperature provinces gradually successively decreased on interior steel pipe so that steel pipe is overall to keep welding in a stable temperature environment
Intensity；One end of wherein described sleeve is fixedly connected with exterior Semi-seal structure, in 1/10th inner peripherys of the sleeve
On the first insulating layer is installed, the section of first insulating layer is arc-shaped, the weldering with steel pipe at work of the first insulating layer
Stitch close but do not contact, the second insulating layer, second insulation are provided with remaining 9/10ths inner periphery of the sleeve
The thickness of layer is gradually reduced along another extreme direction of sleeve.The second insulating layer of the present invention is engaged with the first insulating layer so that set
There are multiple temperature provinces gradually successively decreased on steel pipe in cylinder so that steel pipe is overall to keep weldering in a stable temperature environment
Intensity is connect, avoids steel pipe seam from causing remitted its fury because of the change of temperature, reduces steel pipe seam desoldering phenomenon and occurs.
First insulating layer includes including nylon cloth set, mineral wool and mineral wool successively from outside to inside, nylon cloth set and set
Cylinder inner wall adhesion.It is the highest part of temperature after steel-pipe welding at steel pipe seam, and is keeping weld strength most important
Part, in nylon cloth set distribution set mineral wool and mineral wool, mineral wool that there is stronger high-temperature stability, it is ensured that keep the temperature
The stability of layer continuous firing, mineral wool and mineral wool with the use of can steel pipe seam keep its strong under stable temperature environment
Degree, ensures the performance of steel pipe.
Second insulating layer includes hard bubble cotton, and the hard bubble cotton outside steel pipe at work with being bonded.At steel pipe seam
Heat except being discharged in the gap between the first insulating layer, additionally it is possible to radiated in itself by steel pipe, the second insulating layer is straight
Connecing can be such that the temperature of steel pipe tube body gradually reduces with steel pipe body abutment, hard bubble cotton, avoid steel pipe tube body local temperature rapid drawdown.
Rubber ring is further included, the rubber ring is arranged on sleeve and is connected with exterior Semi-seal structure on the inner wall of one end.Rubber
Cushion rubber can clean up the kick of remaining solder and generation on steel pipe between steel pipe enters sleeve, avoid solder into
Enter into sleeve and wear the hard bubble cotton in the second insulating layer, extend the service life of attemperator.
The sleeve is bolted with exterior Semi-seal structure.
Compared with prior art, the present invention have the following advantages and advantages：
1st, a kind of electric welding machine discharge port heat-insulating method of the present invention, the thickness of the second insulating layer is along another extreme direction of sleeve
It is gradually reduced, may be such that part of the steel pipe in addition to commissure keeps certain temperature, and the second insulation within a period of time
Layer is engaged with the first insulating layer so that occurs multiple temperature provinces gradually successively decreased in sleeve on steel pipe so that steel pipe is overall
Weld strength is kept in a stable temperature environment, avoids steel pipe seam from causing remitted its fury because of the change of temperature, subtracts
Small steel pipe seam desoldering phenomenon occurs；
2nd, a kind of electric welding machine discharge port heat-insulating method of the present invention, rubber ring can be between steel pipe enter sleeve by steel
The kick of remaining solder and generation cleans up on pipe, avoids solder from entering the hard bubble in the second insulating layer in sleeve
Cotton is worn, and extends the service life of attemperator.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the side view of the present invention；
Fig. 3 is the structure diagram of embodiment 1；
Mark and corresponding parts title in attached drawing：
1- sleeves, the second insulating layers of 2-, 3- nylon cloth set, 4- mineral wools, 5- mineral wools, 6- rubber rings, 7- Semi-seal structures,
8- steel pipes, 9- weld seams.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind of electric welding machine discharge port heat-insulating method of the present invention, comprises the following steps, first
First weld the steel pipe 8 finished to be sent out by the outlet of Semi-seal structure 7, enter directly into sleeve 1, the first insulating layer face
At the weld seam 9 of steel pipe 8, the first insulating layer is arc-shaped, can be with to agreeing with, but because just welding the steel pipe 8 finished outside steel pipe 8
Own temperature is high, and part protrusion occurs in weld, therefore by the first insulating layer with being spaced a distance at weld seam 9, both
The temperature of 8 weld seam 9 of steel pipe can be allowed to decline naturally, can also avoid protrusion from causing certain damage to the first insulating layer；
It is provided with the second insulating layer 2 on 1 inner wall of sleeve on remaining 9/10ths inner periphery, and the thickness of the second insulating layer 2 is along sleeve 1
Another extreme direction is gradually reduced, and may be such that part of the steel pipe 8 in addition to weld seam 9 is sentenced keeps certain temperature within a period of time,
And the second insulating layer 2 is engaged with the first insulating layer so that occurs multiple humidity provinces gradually successively decreased in sleeve 1 on steel pipe 8
Domain so that steel pipe 8 is overall to keep weld strength in a stable temperature environment；One end of wherein described sleeve 1 and outside
Semi-seal structure 7 be fixedly connected, the first insulating layer is installed on 1/10th inner peripherys of the sleeve 1, described first
The section of insulating layer is arc-shaped, and the first insulating layer is close with the weld seam 9 of steel pipe 8 at work but does not contact, in the sleeve 1
It is provided with the second insulating layer 2 on remaining 9/10ths inner periphery, the thickness of second insulating layer 2 is along 1 other end side of sleeve
To being gradually reduced；First insulating layer includes nylon cloth set 3, nylon cloth set 3 and 1 inner wall adhesion of sleeve, in the nylon cloth
Mineral wool 5 and mineral wool 4 are disposed with set 3 up and down；Second insulating layer 2 includes hard bubble cotton, and the hard bubble cotton is working
When be bonded with the outside of steel pipe 8；Rubber ring 6 is further included, the rubber ring 6 is arranged on sleeve 1 and is connected one with exterior Semi-seal structure 7
On the inner wall at end.
The second insulating layer 2 of the present invention is engaged with the first insulating layer so that is occurred in sleeve 1 on steel pipe 8 multiple gradual
The temperature province successively decreased so that steel pipe 8 is overall to keep weld strength in a stable temperature environment, avoids 8 weld seam 9 of steel pipe
Cause remitted its fury because of the change of temperature, reduce 8 weld seam of steel pipe, 9 desoldering phenomenon and occur.
It is the highest part of temperature after steel pipe 8 welds at 8 weld seam 9 of steel pipe, and is keeping weld strength most important
Part, in the nylon cloth set 3 distribution set mineral wool 5 and mineral wool 4, mineral wool 4 that there is stronger high-temperature stability, it is ensured that
The stability of insulating layer continuous firing, mineral wool 5 and mineral wool 4 with the use of can 8 weld seam 9 of steel pipe under stable temperature environment
Its intensity is kept, ensures the performance of steel pipe 8；Heat at 8 weld seam 9 of steel pipe is except the gap between the first insulating layer
Middle discharge, additionally it is possible to radiated by steel pipe 8 itself, the second insulating layer 2 directly can make steel pipe 8 with 8 body abutment of steel pipe, hard bubble cotton
The temperature of tube body gradually reduces, and avoids 8 tube body local temperature rapid drawdown of steel pipe.
Wherein, rubber ring 6 can dash forward remaining solder on steel pipe 8 and the small of generation between steel pipe 8 enters sleeve 1
Rise and clean up, avoid solder from entering in sleeve 1 and wear the hard bubble cotton in the second insulating layer 2, extend the use of attemperator
Service life.
Above-described embodiment, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it should be understood that the foregoing is merely the embodiment of the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should all include
Within protection scope of the present invention.
Claims (5)
- A kind of 1. electric welding machine discharge port heat-insulating method, it is characterised in that：Comprise the following steps, weld the steel pipe finished first (8) sent out, entered directly into sleeve (1) by the outlet of Semi-seal structure (7), the first insulating layer face steel pipe (8) Weld seam (9) place, the first insulating layer are arc-shaped, can be exterior to agreeing with steel pipe (8), but because just weld the steel pipe (8) finished Own temperature is high, and part protrusion occurs in weld, therefore the first insulating layer and weld seam (9) place are spaced a distance, The temperature of steel pipe seam (9) can either be allowed to decline naturally, can also avoid protrusion from causing certain damage to the first insulating layer； The second insulating layer (2), and the thickness of the second insulating layer (2) are provided with remaining 9/10ths inner periphery on sleeve (1) inner wall Degree is gradually reduced along sleeve (1) another extreme direction, may be such that part of the steel pipe (8) in addition to weld seam (9) is sentenced within a period of time Certain temperature is kept, and the second insulating layer (2) is engaged with the first insulating layer so that occur on sleeve (1) interior steel pipe (8) Multiple temperature provinces gradually successively decreased so that steel pipe (8) is overall to keep weld strength in a stable temperature environment；Wherein One end of the sleeve (1) is fixedly connected with exterior Semi-seal structure (7), in 1/10th inner peripherys of the sleeve (1) On the first insulating layer is installed, the section of first insulating layer is arc-shaped, the first insulating layer at work with steel pipe (8) Weld seam (9) is close but does not contact, and the second insulating layer (2), institute are provided with remaining 9/10ths inner periphery of the sleeve (1) The thickness for stating the second insulating layer (2) is gradually reduced along sleeve (1) another extreme direction.
- A kind of 2. electric welding machine discharge port heat-insulating method according to claim 1, it is characterised in that：First insulation Layer includes including nylon cloth set (3), mineral wool (4) and mineral wool (5) successively from outside to inside, nylon cloth set (3) and sleeve (1) inner wall Adhesion.
- A kind of 3. electric welding machine discharge port heat-insulating method according to claim 1, it is characterised in that：Second insulation Layer (2) includes hard bubble cotton, and the hard bubble cotton outside steel pipe (8) at work with being bonded.
- A kind of 4. electric welding machine discharge port heat-insulating method according to claim 1, it is characterised in that：Further include rubber ring (6), the rubber ring (6) is arranged on sleeve (1) and is connected with exterior Semi-seal structure (7) on the inner wall of one end.
- A kind of 5. electric welding machine discharge port heat-insulating method according to Claims 1 to 4 any one, it is characterised in that： The sleeve (1) is bolted with exterior Semi-seal structure (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065513.0A CN107904388A (en) | 2017-11-02 | 2017-11-02 | A kind of electric welding machine discharge port heat-insulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065513.0A CN107904388A (en) | 2017-11-02 | 2017-11-02 | A kind of electric welding machine discharge port heat-insulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107904388A true CN107904388A (en) | 2018-04-13 |
Family
ID=61842489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711065513.0A Withdrawn CN107904388A (en) | 2017-11-02 | 2017-11-02 | A kind of electric welding machine discharge port heat-insulating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107904388A (en) |
-
2017
- 2017-11-02 CN CN201711065513.0A patent/CN107904388A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180413 |
|
| WW01 | Invention patent application withdrawn after publication |