CN208644343U - A kind of gas-protection-free metal tube docking welding structure - Google Patents
A kind of gas-protection-free metal tube docking welding structure Download PDFInfo
- Publication number
- CN208644343U CN208644343U CN201721912690.3U CN201721912690U CN208644343U CN 208644343 U CN208644343 U CN 208644343U CN 201721912690 U CN201721912690 U CN 201721912690U CN 208644343 U CN208644343 U CN 208644343U
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- Prior art keywords
- metal tube
- welding
- gas
- protection
- liner
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- 238000003466 welding Methods 0.000 title claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 36
- 238000003032 molecular docking Methods 0.000 title description 4
- 239000000463 material Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 12
- 229910052786 argon Inorganic materials 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005498 polishing Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- NGONBPOYDYSZDR-UHFFFAOYSA-N [Ar].[W] Chemical compound [Ar].[W] NGONBPOYDYSZDR-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A kind of gas-protection-free metal tube provided by the utility model docks welding structure; including two metal tubes; the liner being fixedly connected by spot welding with described two metal tubes is equipped at metal tube welding junction relative to each other; the liner is tightly attached to welding junction described in lateral edge in the welding junction and circumferentially extends; it is double V-groove on the outside of the welding junction, the nozzle in the metal tube towards outside is open.The nozzle of steel pipe outwardly is open in the utility model, without being filled with argon gas.Therefore gas consumption is smaller, energy-efficient, reduces production cost, improves production efficiency.After welding, welding junction inner surface is smooth, without polishing, has saved time and cost.
Description
Technical field
The utility model relates to shipbuilding field, especially a kind of gas-protection-free metal tube docks welding structure.
Background technique
At present in shipbuilding field, metal tube butt welding mostly uses hand tungsten argon arc welding mode.It is general as shown in Figure 4 to use
Solid core welding wire, the root of weld aoxidizes in order to prevent in welding process, to weld in pipeline internal argon-filling gas shielded.I.e. in welding
Two external nozzles are closed with end socket, enough argon gas are poured into pipe and are protected.According to the actual situation, the prior art
It has the disadvantage that:
1, inflation welding gas consumption is big, causes to waste, improves cost, especially crosses the biggish pipe of pipe range to Large Diameter Pipeline
Material.
2, inflation welding needs the auxiliary tools such as a large amount of end socket, tooling, and the caliber of every kind of model will carry out phase
The preparation answered, increases cost.
3, inflation welding needs the limitation by place, it is necessary in the place for having sufficient gas source.Some place place items
Part does not allow, such as: outdoor, cabin, high-altitude etc. limits processing site.
4, the butt welding welding of long pipe runs, more weld seams using inflation welding there is gas to be not easy the problem of filling, and weld
After be not easy grinding process.
5, when weld ell or threeway position, gas-filled protective measure is complicated, using the non-cutting time of gas-filled protective method
It is long, waste gas.
6, when welding using which, several workers is needed to cooperate cooperation, it is time-consuming.
Utility model content
The utility model provides a kind of gas-protection-free metal tube docking welding structure, to exempt charger, end socket not
Necessary apparatus, it is big to solve existing welding structure cost, inconvenient, time-consuming, the limited disadvantage of operationlocation.
To achieve the goals above, the technical solution that the utility model is taken are as follows:
The gas-protection-free metal tube docks welding structure, including two metal tubes, and the metal tube is relative to each other
The liner being fixedly connected by spot welding with described two metal tubes is equipped at welding junction, the liner is located at the welding junction
Inside, the welding junction outside is double V-groove.
The liner two sides are respectively protruding into 5mm inside respective side metal tube nozzle.
The angle of the double V-groove is 60 ° -70 °.
Weld gap at the welding junction is 3-4mm.
The liner thickness is not more than 1mm.
The liner material is identical as the metal tube same material, and both side surface is smooth up and down.
The liner is circumferentially extended along the welding junction.
The nozzle in the metal tube towards outside is open.
By adopting the above technical scheme, since liner can prevent welding junction from being made due to not by argon gas protecting effect by oxidation
With, thus in this structure the nozzle of steel pipe outwardly be it is open, without being filled with argon gas.It is energy-efficient, production cost is reduced, is improved
Production efficiency.And this programme does not need the auxiliary such as special tooling with can be suitably used for a variety of processing sites, various model pipelines
Tool, it is easy to operate, it can also be applied at the special pipe interface of the shapes such as elbow or threeway position.This structure is being welded simultaneously
Afterwards, welding junction inner surface is smooth, has saved time and cost without polishing.
Detailed description of the invention
Fig. 1 is the local structural graph in the utility model at welding junction；
Fig. 2 is the local structural graph at welding junction during processing cost utility model；
Fig. 3 is the sectional view of the utility model in the welding process；
Fig. 4 is welded structural schematic diagram in the prior art.
Label in figure are as follows:
1. metal tube, 2. liners, 3.V type groove, 4. welding guns, 5. welding wires.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present invention further detailed
Explanation, with help those skilled in the art to the present utility model design, technical solution have it is more complete, accurate and deeply
Understanding.
As shown in Figure 1-3, the utility model provides a kind of gas-protection-free metal tube docking welding structure, including two gold
Belong to pipe 1, is equipped with the liner 2 being fixedly connected by spot welding with two metal tubes 1 at the welding junction relative to each other of metal tube 1.Lining
Pad 2 is tightly attached to its circumferentially extending of lateral edge in welding junction.Metal tube 1 is by taking stainless steel tube as an example below: use and stainless-steel pipe
The thin plate of material same material pads 2 thickness requirements in 1mm hereinafter, weld gap is 3-4mm, 2 width of liner as liner 2
About 5mm is respectively put by weld gap or so to be preferred.2 length are padded according to tubing latus rectum perimeter blanking.60 ° -70 ° must be opened before tubing weldering
Double V-groove 3, remove flash removed, fairing of polishing.
The good liner 2 of blanking first first fills in side in the tubing welding junction of one end, and deeply about 5mm, spot welding are fixed.Again will
Other end tubing, which covers, is padding 2 exposed portion, has stayed weld gap, guarantee weld gap is 3-4mm, then spot welding is fixed.Pay attention to
Bushing will be adjacent to tube wall.
Liner 2 fix can welding, weldment oxide on surface at preweld cleaning groove inward flange 10-20mm, moisture or
The impurity such as greasy dirt, are cleaned after cleaning with acetone.All-position welding is carried out after the fixed pipe fitting of level, by the bottom of pipe fitting welding interface
Weldering is played, is soldered to the top of pipe fitting upwards from two sides respectively.
When welding it is noted that between welding gun 4, welding wire 5 and weldment angle selection.The angle mistake of welding gun 4 and weldment surface
It is small to reduce argon gas protecting effect, when angle is excessive, operates and heat and is relatively difficult.Ideal welding gun 4 and weldment horizontal centre
The angle of line is 75 ° -85 °, and welding wire 5 and weldment surface angle are 15 °~20 °, and welding gun 4 is as far as possible perpendicular to weld seam.
The nozzle of steel pipe outwardly is open in this welding structure, without being filled with argon gas.Energy-efficient, reduction is produced into
This, improves production efficiency.After welding, welding junction inner surface is smooth, without polishing, has saved time and cost.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as using changing for the various unsubstantialities that the utility model method concept and technical solution carry out
Into, or it is not improved the utility model conception and technical scheme are directly applied into other occasions, the utility model protect
Within the scope of shield.
Claims (8)
1. a kind of gas-protection-free metal tube docks welding structure, it is characterised in that: including two metal tubes, the metal tube is each other
The liner being fixedly connected by spot welding with described two metal tubes is equipped at opposite welding junction, the liner is located at the weldering
It is double V-groove on the outside of the welding junction on the inside of connection interface.
2. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the liner two
Side is respectively protruding into 5mm inside respective side metal tube nozzle.
3. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the V-type slope
The angle of mouth is 60 ° -70 °.
4. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: described to connect
Weld gap at mouthful is 3-4mm.
5. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the liner is thick
Degree is not more than 1mm.
6. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the liner material
Matter is identical as the metal tube same material, and both side surface is smooth up and down.
7. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the liner edge
The welding junction circumferentially extending.
8. a kind of gas-protection-free metal tube according to claim 1 docks welding structure, it is characterised in that: the metal tube
Nozzle towards outside is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721912690.3U CN208644343U (en) | 2017-12-30 | 2017-12-30 | A kind of gas-protection-free metal tube docking welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721912690.3U CN208644343U (en) | 2017-12-30 | 2017-12-30 | A kind of gas-protection-free metal tube docking welding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208644343U true CN208644343U (en) | 2019-03-26 |
Family
ID=65771655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721912690.3U Active CN208644343U (en) | 2017-12-30 | 2017-12-30 | A kind of gas-protection-free metal tube docking welding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208644343U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695499A (en) * | 2019-09-24 | 2020-01-17 | 江苏航运职业技术学院 | MAG welding process for austenitic stainless steel pipeline |
| CN113210797A (en) * | 2021-05-10 | 2021-08-06 | 芜湖造船厂有限公司 | Ship plate and member welding process method |
| CN114043046A (en) * | 2021-11-26 | 2022-02-15 | 中石化第四建设有限公司 | Argon-filling-free welding method for preventing back surface from being oxidized by priming argon arc welding at pipeline mounting port |
-
2017
- 2017-12-30 CN CN201721912690.3U patent/CN208644343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695499A (en) * | 2019-09-24 | 2020-01-17 | 江苏航运职业技术学院 | MAG welding process for austenitic stainless steel pipeline |
| CN113210797A (en) * | 2021-05-10 | 2021-08-06 | 芜湖造船厂有限公司 | Ship plate and member welding process method |
| CN114043046A (en) * | 2021-11-26 | 2022-02-15 | 中石化第四建设有限公司 | Argon-filling-free welding method for preventing back surface from being oxidized by priming argon arc welding at pipeline mounting port |
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