CN108515282A - A kind of welding method for preventing workpiece from deforming - Google Patents
A kind of welding method for preventing workpiece from deforming Download PDFInfo
- Publication number
- CN108515282A CN108515282A CN201810204078.3A CN201810204078A CN108515282A CN 108515282 A CN108515282 A CN 108515282A CN 201810204078 A CN201810204078 A CN 201810204078A CN 108515282 A CN108515282 A CN 108515282A
- Authority
- CN
- China
- Prior art keywords
- pipe
- welding
- welded
- web member
- truss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
Abstract
The invention discloses a kind of welding method for preventing workpiece from deforming, this method includes：It is required according to project blue print, checks the in place of truss, chord member pipe and web member pipe；It checks the clean condition of welding position, and uses baffle draught exclusion device, pre- hot baked is carried out to chord member pipe and web member pipe；Welded pipe is symmetrically welded, when welding, should be symmetrically welded from centre toward both ends, be transferred to another pipe again after being soldered a pipe and welded.Method provided by the invention can balance heat, reduce welding deformation, to improve the quality of welding, meanwhile, it ensure that structure integral installation quality.
Description
Technical field
The present invention relates to mechanical field, specially a kind of welding method for preventing workpiece from deforming.
Background technology
There are many big machinery class product now, and volume is increasing, and manufacture difficulty is also increasing, and in process of production
There is a phenomenon where being easy to generate indent or evagination in the welding process, during the welding process, the imbalance of heating amount, meeting
Increase the probability of welding deformation, and the sequential selection welded can also impact the deformation of welding, become welding production
Problem.
Invention content
To solve the above-mentioned problems, the present invention designs a kind of welding method for preventing workpiece from deforming to the present invention, to be used for
Solve drawbacks described above, the technical solution used for：A kind of welding method for preventing workpiece from deforming, which is characterized in that this method
Including：
Required according to project blue print, check truss, welded pipe it is in place, the welded pipe includes chord member pipe and web member pipe；
Check the clean condition of welding position, and using baffle or so draught exclusion device；
Pre- hot baked is carried out to chord member pipe and web member pipe, stoving temperature is 300-380 DEG C, bakes and continues 1h postcoolings to 150 DEG C
Heat preservation；
When welding, it should be symmetrically welded from centre toward both ends, step is,
First, the butt weld between main chord pipe and main chord pipe is first welded；
Secondly, the butt weld of welding web member pipe and the intersecting welding, web member pipe and web member pipe of main chord pipe；
Finally, another pipe is transferred to again after being soldered a pipe to be welded；
Preferably, the truss welding assembles on the ground.
Preferably, further include measurement to truss, ensure that precision is preset in the installation between truss.
Preferably, the material of the welded pipe is E5015 carbon steels.
In the embodiment of the present invention, according to installation requirement, weld job is completed on ground, segmentation correction purlin when ground assembles
Frame controls the welding deformation of truss, the made allowance when ground assembles, and precision is preset in the installation not up between truss, is waited for
It cuts off and corrects after actual measurement splicing mouth coordinate；When welding, it should be symmetrically welded from centre toward both ends, first weld main chord pipe and main chord
The butt weld of the intersecting welding, web member and web member of web member and main chord is welded in butt weld between pipe, when being soldered a pipe
Another pipe is transferred to after son again to be welded, two weld seams of same pipe must not weld simultaneously, when welding should from it is intermediate toward
The symmetrical skip welding in both sides.Method provided by the invention can balance heat, reduce welding deformation, to improve the quality of welding, together
When, it ensure that structure integral installation quality.
Description of the drawings
Fig. 1 is the flow diagram of the method for the invention.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is only
A part of the embodiment of the present invention gives presently preferred embodiments of the present invention instead of all the embodiments in attached drawing.The present invention can
To realize in many different forms, however it is not limited to embodiment described herein, on the contrary, provide the mesh of these embodiments
Be to make the disclosure of the present invention more thorough and comprehensive.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
In this law embodiment, welding material selection directly influences the quality of welding with keeping, and being must in welding engineering
Indispensable；Preferably, the material of the welded pipe is E5015 carbon steels, waits when stored, well-ventilated is wanted in storehouse,
Drying is kept, thermometer, relative humidity are placed in library no more than 60%, welding material is stored on dedicated shelf, shelf
From the ground, wall is in 300mm or more.
In conjunction with Fig. 1, a kind of welding method for preventing workpiece from deforming, including step are provided：
A, according to the layout design of engineering, device before welding is checked；
Specifically, before welding, check whether welding equipment complete, for example, truss, chord member pipe and web member pipe it is in place；
B, welded pipe cleaned, preheated；
Specifically, before welding, it is necessary to conscientiously perform welding bead cleaning work, thoroughly remove greasy dirt, moisture, iron rust, oxide skin etc., examine
Look into the clean condition of welding position；And reduce air quantity can to the quality of welding generate advantageous effect, weldering is placed on using baffle
The left and right ends of connection device carry out draught exclusion device；
Pre- hot baked is carried out to chord member and web member, stoving temperature is 300-380 DEG C, bakes lasting 1h postcoolings and is kept the temperature to 150 DEG C,
On-demand, the welding rod got should be put into heat-preservation cylinder.
C, welded pipe is symmetrically welded
The selection of welding sequence is considered as the factor of welding deformation, and the position big to welding deformation amount should first be welded, in welding process,
Heating amount is balanced, the influence of welding deformation is reduced, welding sequence is first to weld the butt welding between main chord pipe and main chord pipe
Seam；Again by the butt weld of web member pipe and the intersecting welding, web member pipe and web member pipe of main chord pipe；It is soldered after one and is transferred to again separately
One welding, two weld seams of same pipe must not weld simultaneously；It should be prevented from distorting from centre toward the symmetrical skip welding in both sides when welding
Deformation.
D, truss assembling is carried out on the ground, and is measured due to truss, ensures the installation budget precision between truss；
Appropriate to take part correction and indemnifying measure, segmentation correction truss, controls the welding deformation of truss when ground assembles；If
Section is filled after setting part, the made allowance when ground assembles, the not up to installation between truss preset precision, wait for actual measurement splicing mouth coordinate
After can carry out excision amendment.
In the embodiment of the present invention, before welding, check whether welding equipment is complete, such as truss, chord member pipe and web member pipe
It is in place；Welding bead cleaning work is conscientiously performed, greasy dirt, moisture, iron rust, oxide skin etc. are thoroughly removed, checks the clear of welding position
Clean situation；And reduce air quantity can to the quality of welding generate advantageous effect, the left and right two of welder is placed on using baffle
End carries out draught exclusion device；Pre- hot baked is carried out to chord member pipe and web member pipe, stoving temperature is 300-380 DEG C, is baked after continuing 1h
150 DEG C of heat preservations are cooled to, on-demand, the welding rod got should be put into heat-preservation cylinder；The position big to welding deformation amount should first be welded,
In welding process, heating amount is balanced, reduces the influence of welding deformation, welding sequence is first to weld main chord pipe and main chord pipe
Butt weld between pipe；Again by the butt weld of the intersecting welding of web member pipe and main chord, web member pipe and web member pipe, it is soldered one
Another welding is transferred to after item again, two weld seams of same pipe must not weld simultaneously, should be from intermediate symmetrical toward both sides when welding
Skip welding prevents torsional deformation；Segmentation correction truss, controls the welding deformation of truss when ground assembles, and truss is assembled on ground
When made allowance, not up to the installation between truss preset precision, after actual measurement splice mouth coordinate after can carry out excision amendment.The present invention
The method of offer can balance heat, reduce welding deformation, to improve the quality of welding, meanwhile, it ensure that structure is integrally pacified
Packing quality.
The foregoing is merely a prefered embodiment of the invention, the scope of the claims of the present invention is not intended to limit, although with reference to aforementioned reality
Applying example, invention is explained in detail, still can be to aforementioned each tool for those skilled in the art comes
Technical solution recorded in body embodiment is modified, or carries out equivalence replacement to which part technical characteristic.Every profit
The equivalent structure made of description of the invention and accompanying drawing content is directly or indirectly used in other related technical areas,
Similarly within scope of patent protection of the present invention.
Claims (4)
1. a kind of welding method for preventing workpiece from deforming, which is characterized in that this method includes：
Required according to project blue print, check truss, welded pipe it is in place, the welded pipe includes chord member pipe and web member pipe；
It checks the clean condition of welding position, and uses baffle draught exclusion device；
Pre- hot baked is carried out to chord member pipe and web member pipe, stoving temperature is 300-380 DEG C, bakes and continues 1h postcoolings to 150 DEG C
Heat preservation；
When welding, it should be symmetrically welded from centre toward both ends, step is,
First, the butt weld between main chord pipe and main chord pipe is first welded；
Secondly, the butt weld of welding web member pipe and the intersecting welding, web member pipe and web member pipe of main chord pipe；
Finally, another pipe is transferred to again after being soldered a pipe to be welded.
2. a kind of welding method for preventing workpiece from deforming as described in claim 1, which is characterized in that the truss welding is on ground
Face over-assemble.
3. a kind of welding manner for preventing workpiece from deforming as claimed in claim 2, which is characterized in that further include the survey to truss
Amount ensures that precision is preset in the installation between truss.
4. a kind of welding manner for preventing workpiece from deforming as described in claim 1, which is characterized in that the material of the welded pipe
It is E5015 carbon steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204078.3A CN108515282A (en) | 2018-03-13 | 2018-03-13 | A kind of welding method for preventing workpiece from deforming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204078.3A CN108515282A (en) | 2018-03-13 | 2018-03-13 | A kind of welding method for preventing workpiece from deforming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108515282A true CN108515282A (en) | 2018-09-11 |
Family
ID=63432792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204078.3A Pending CN108515282A (en) | 2018-03-13 | 2018-03-13 | A kind of welding method for preventing workpiece from deforming |
Country Status (1)
| Country | Link |
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| CN (1) | CN108515282A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111703516A (en) * | 2020-06-16 | 2020-09-25 | 常州市华谷机械科技有限公司 | Longitudinal beam structure of crawler frame and manufacturing process thereof |
| CN112317979A (en) * | 2020-09-25 | 2021-02-05 | 中国二十二冶集团有限公司 | Pipe truss multi-pipe welding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3288669B2 (en) * | 2000-01-25 | 2002-06-04 | 川崎重工業株式会社 | Joint structure of hollow material with friction stir welding |
| CN102489888A (en) * | 2011-11-29 | 2012-06-13 | 武汉船用机械有限责任公司 | Welding method for high-strength steel truss-type cantilever crane |
| CN106238936A (en) * | 2016-08-29 | 2016-12-21 | 安徽饰界广告有限公司 | A kind of welding method of square tube truss |
| CN106346174A (en) * | 2016-11-30 | 2017-01-25 | 上海二十冶建设有限公司 | Anti-deformation welding method of flaky pipe truss |
-
2018
- 2018-03-13 CN CN201810204078.3A patent/CN108515282A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3288669B2 (en) * | 2000-01-25 | 2002-06-04 | 川崎重工業株式会社 | Joint structure of hollow material with friction stir welding |
| CN102489888A (en) * | 2011-11-29 | 2012-06-13 | 武汉船用机械有限责任公司 | Welding method for high-strength steel truss-type cantilever crane |
| CN106238936A (en) * | 2016-08-29 | 2016-12-21 | 安徽饰界广告有限公司 | A kind of welding method of square tube truss |
| CN106346174A (en) * | 2016-11-30 | 2017-01-25 | 上海二十冶建设有限公司 | Anti-deformation welding method of flaky pipe truss |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111703516A (en) * | 2020-06-16 | 2020-09-25 | 常州市华谷机械科技有限公司 | Longitudinal beam structure of crawler frame and manufacturing process thereof |
| CN111703516B (en) * | 2020-06-16 | 2022-03-29 | 常州市华谷机械科技有限公司 | Longitudinal beam structure of crawler frame and manufacturing process thereof |
| CN112317979A (en) * | 2020-09-25 | 2021-02-05 | 中国二十二冶集团有限公司 | Pipe truss multi-pipe welding method |
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Application publication date: 20180911 |