CN106944724A - Unclear welding method of submerged-arc welding full penetration - Google Patents
Unclear welding method of submerged-arc welding full penetration Download PDFInfo
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- CN106944724A CN106944724A CN201710322182.8A CN201710322182A CN106944724A CN 106944724 A CN106944724 A CN 106944724A CN 201710322182 A CN201710322182 A CN 201710322182A CN 106944724 A CN106944724 A CN 106944724A
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- welding
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- weld
- full penetration
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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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of unclear welding method of submerged-arc welding full penetration, including：Adjust weld gap；Pasted in the back of weld and not back chipping pad is set；Bottoming welding is carried out to the weld seam using submerged-arc welding；After the completion of bottoming welding, the not back chipping pad pasted and set is removed, the weld seam after being connect using submerged-arc welding to backing welding is welded, until completing the full penetration of the weld seam.This method is due to first adjusting weld gap, it is ensured that group to special gap, it is convenient set not back chipping pad, and using being pasted in back of weld, not back chipping pad is set, not only fast and effeciently weld root pad material can be held up, it is easy to use, and environmental protection is nonflammable；The welding method makes the weld is accepted rate under the big production of batch production once up to more than 95% in the case where not needing back chipping processing.Avoid the relevant issues caused with carbon arc air gouging back chipping.
Description
Technical field
The present invention relates to field of steel structure construction, more particularly to a kind of unclear welding method of submerged-arc welding full penetration.
Background technology
At present, country facilities large-scale production full penetration technology, usually using manual welding or submerged-arc welding bottoming, so
The method that branch face uses carbon arc air gouging back chipping afterwards, the method can bring arclight, flue dust, noise etc. when using carbon arc air gouging back chipping
Environmental pollution, is caused and big injury to workman's body, workman in the back chipping work position most long working time no more than 1 year,
Not so deafness can be caused；Flue dust is excessive during additionally, due to back chipping, and workman easily suffers from pneumoconiosis；During using carbon arc air gouging back chipping,
A large amount of manpowers, equipment machine-team, carbon-point, grinding wheel etc. are consumed, and adds part wlding loading and energy consumption；Using carbon arc
Because a large amount of heat inputs easily cause the change of the big deformation of welded unit and metallographic structure during gouge back chipping.
The welding of current most of full penetration welds, specific practice is to use CO2Or submerged-arc welding bottoming, first in front use
Gas shield welding bottoming, stands up back side carbon arc gas and protects back chipping；Also have in addition：As " backing copper backing ", " backing formation ceramic blanket method " and
" backing solder flux method " etc..Wherein, " backing copper backing " the general back-welding shape welding for being suitable only for the small energy electric arc of thin plate；" the back of the body
The general welding occasion for being suitable only for the back-welding shape that weld seam spatial form and bevel shape are fixed of lining shaped ceramic pad method ", but
It is more strict to clearance requirement to group, and is difficult the influence for overcoming tack weld, therefore Practical Project is often difficult to use " backing
Solder flux method ", because clearance requirement is too high, lining solder flux process is excessively bothered, and is not used and is promoted in factory always.
The shortcoming of back chipping is needed to be in the welding of existing full penetration weld after bottoming welding：(1) noise is big, smog and high light
Radiation；(2) labor intensity is high, efficiency is low, energy resource consumption is big；(3) due to a large amount of heat inputs during back chipping, cause component angular deformation and
Torsional deformation.
The content of the invention
Based on the problems of prior art, connect it is an object of the invention to provide a kind of unclear root bead of submerged-arc welding full penetration
Method, without carrying out back chipping processing after weld seam bottoming welding, can carry out submerged-arc welding full penetration, it is to avoid at because of back chipping
The problem of caused by reason.
The embodiment of the present invention provides a kind of unclear welding method of submerged-arc welding full penetration, including：
Adjust weld gap；
Pasted in the back of weld and not back chipping pad is set；
Bottoming welding is carried out to the weld seam using submerged-arc welding, the welding current of bottoming welding can use 750~800A；Electricity
Press 28~32v；Speed of welding is 35cm/min, after the completion of bottoming welding, the not back chipping pad pasted and set is removed, using submerged arc
The weld seam after weldering connects to backing welding is welded, until completing the full penetration of the weld seam.
As seen from the above technical solution provided by the invention, submerged-arc welding full penetration provided in an embodiment of the present invention is unclear
Root welding method, due to first adjusting weld gap, it is ensured that group to special gap, it is convenient set not back chipping pad, and adopt
Pasted used in back of weld and not back chipping pad be set, not only fast and effeciently weld root pad material can be held up,
It is easy to use, and environmental protection is nonflammable；The welding method common laborer in factorial praluction can operate, and not need
In the case of back chipping processing, make the weld is accepted rate under the big production of batch production once up to more than 95%.The welding method of the present invention,
After bottoming is soldered, carbon arc air gouging back chipping is completely dispensed with；The through welding of cut deal can be realized；Efficiency and the larger raising of welding quality；
Reduce the environmental pollutions such as arclight, flue dust, noise that back chipping is brought；Save the energy and goods and materials.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 pastes for the back of weld of welding method provided in an embodiment of the present invention sets not back chipping pad schematic diagram；
Fig. 2 founds gap adjustment schematic diagram for the H profile steel group of welding method provided in an embodiment of the present invention；
Fig. 3 founds gap adjustment schematic diagram for the group of welding method provided in an embodiment of the present invention；
Fig. 4 stands gap for the group of welding method provided in an embodiment of the present invention and adjusts qualified schematic diagram；
Fig. 5 is the diagrammatic cross-section at Fig. 4 F-F.
Embodiment
With reference to the particular content of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to protection scope of the present invention.
As shown in figure 1, the embodiment of the present invention provides a kind of unclear welding method of submerged-arc welding full penetration, including：
Adjust weld gap A；
Pasted in the back of weld and not back chipping pad 1 is set；
Bottoming welding is carried out to the weld seam using submerged-arc welding；
After the completion of bottoming welding, the not back chipping pad pasted and set is removed, described in after being connect using submerged-arc welding to backing welding
Weld seam is welded, until completing the full penetration of the weld seam.
In above-mentioned unclear welding method, back chipping pad 1 is not by heat-insulation light material obturator 12 and pastes soon anti-burning
Material layer 11 is constituted；Wherein, the heat-insulation light material obturator top is filled to the weld seam from the back of weld；
It is described to paste the bottom surface that anti-burning material layer is pasted onto the heat-insulation light material obturator soon, can will be described heat-insulated
Light material obturator, which is pasted, is arranged on the back of weld.
In above-mentioned unclear welding method, heat-insulation light material obturator is：Section with lower arcuate surface is tubaeform
Horn body bottom, and be located on the cuboid top of horn body bottom upper end, the horn body bottom and cuboid
Portion is integrated；
The cuboid top, which is stretched into, to be arranged in the weld seam.
In above-mentioned unclear welding method, the most narrow place of the width on cuboid top and the weld seam matches.
In above-mentioned unclear welding method, the width on cuboid top is 5~6mm.
In above-mentioned unclear welding method, the heat-insulation light material obturator is made of sintered flux is particles filled；
Other heat-insulation light material granules can be used for preparing the obturator.
The sticking metal material scraps of paper of anti-burning material layer use tool, iron plate or the aluminium flake pasted soon is made.Such as
Can be can sticky aluminium platinum paper etc., this material economy and recyclable.
In above-mentioned unclear welding method, the weld seam is carried out in bottoming welding using submerged-arc welding, using a diameter of
4.8mm welding wire carries out bottoming welding.
In above-mentioned unclear welding method, adjustment weld gap includes：
By 6mm steel plates and raise the price plate frock guarantee group to gap be 5~6mm.Specific frock group Liru Fig. 2~5
It is shown.In Fig. 2, it is pressure head C, roller bearing E, B to organize cube the steel to, 5~6mm thickness that H profile steel group, which founds the gap frock that uses of adjustment,
Pad.I-steel group is stood gap adjustment and is adjusted using the thick detachable correcting wedges of 5~6mm in Fig. 3.
In the inventive method, the heat transfer property using the metallics such as metal material scraps of paper is poor, easy to use, flexible,
Convenient characteristic is pasted, all shortcomings of carbon arc air gouging back chipping back chipping are effectively overcome, the efficiency of backing welding is improved nearly 3
Times, the invented technology is practical, easy to use, easy to learn, and weld is accepted rate is high, successfully solves full penetration in welding history
The problem of necessary back chipping, is welding technique that is pioneering and being used in factory's spread at home, is a kind of efficient, high-quality
The new welding technology of low cost, is with a wide range of applications and promotional value in construction steel structure factory, is every year factory
Save the up to ten million members of cost.
The embodiment of the present invention is specifically described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Part used, simple in construction in the inventive method, makes efficient and convenient, flexibly practical；
Frock used by gap is stood by regulation group, each modular construction is simple, can flexibly make at the construction field (site), compact
It is convenient, and quick laying as needed, it is practical.
Reconcile high precision, controllability strong；
Due to being screw rod screw thread and nut rotation transmission pressure, often rotate a circle a removable pitch, and transmission accuracy is very
It is high；In addition operating process relies on torque wrench manual operation, can flexibly control as needed, regulating effect is good.
It is flexibly light, lay scope extensively, break through limited space and limited.
This frock is flexible, can on a large scale be laid according to cushion cap steel plate width and deviation requirement, adjustable range is wide.Cushion cap
The typically no space taken root for large complicated frock in the middle part of steel plate, the unique screw design of this frock can be by bearing sheet bottom
Basic embedded bar is taken root fixation, solves deformation adjustment problem in the middle part of bearing sheet.
In the inventive method, padded by being used as not back chipping with the anti-burning material of Pasting, facilitate backing material high
Effect is used and environmental protection；Set of welding condition is summed up by nearly half a year lot of experiments；Use diameter first at home
4.8mm welding wire carries out bottoming welding.The invention of this frock is flexibly light, and solder yield, up to more than 95%, is every year general steel
Structure fabrication factory saves at least up to ten million members of cost.
The foregoing is intended to be a preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (8)
1. a kind of unclear welding method of submerged-arc welding full penetration, it is characterised in that including：
Adjust weld gap；
Pasted in the back of weld and not back chipping pad is set；
Bottoming welding is carried out to the weld seam using submerged-arc welding；
After the completion of bottoming welding, the not back chipping pad pasted and set, the weld seam after being connect using submerged-arc welding to backing welding are removed
Welded, until completing the full penetration of the weld seam.
2. unclear welding method of submerged-arc welding full penetration according to claim 1, it is characterised in that the not back chipping pad
Paste by heat-insulation light material obturator and soon anti-burning material layer and constitute；Wherein, the heat-insulation light material obturator top
Filled from the back of weld to the weld seam；
It is described to paste the bottom surface that anti-burning material layer is pasted onto the heat-insulation light material obturator soon, can be by the heat-insulation light
Material obturator, which is pasted, is arranged on the back of weld.
3. unclear welding method of submerged-arc welding full penetration according to claim 2, it is characterised in that the heat-insulation light material
Expect that obturator is：Section with lower arcuate surface is tubaeform horn body bottom, and is located at horn body bottom upper end
Cuboid top, the horn body bottom and cuboid top are integrated；
The cuboid top, which is stretched into, to be arranged in the weld seam.
4. unclear welding method of submerged-arc welding full penetration according to claim 3, it is characterised in that the cuboid top
The most narrow place of width and the weld seam match.
5. unclear welding method of submerged-arc welding full penetration according to claim 3 or 4, it is characterised in that the cuboid
The width on top is 5~6mm.
6. unclear welding method of submerged-arc welding full penetration according to any one of claim 2 to 4, it is characterised in that described
Heat-insulation light material obturator is made of sintered flux is particles filled；
The sticking metal material scraps of paper of anti-burning material layer use tool, iron plate or the aluminium flake pasted soon is made.
7. unclear welding method of submerged-arc welding full penetration according to any one of Claims 1-4, it is characterised in that described
The weld seam is carried out in bottoming welding using submerged-arc welding, bottoming welding is carried out using a diameter of 4.8mm welding wire；
The welding current of bottoming welding uses 750~800A, and 28~32v of voltage, speed of welding is 35cm/min.
8. unclear welding method of submerged-arc welding full penetration according to any one of Claims 1-4, it is characterised in that described
Adjustment weld gap includes：
By 6mm steel plates and raise the price plate frock adjustment group to gap be 5~6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322182.8A CN106944724A (en) | 2017-05-09 | 2017-05-09 | Unclear welding method of submerged-arc welding full penetration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322182.8A CN106944724A (en) | 2017-05-09 | 2017-05-09 | Unclear welding method of submerged-arc welding full penetration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106944724A true CN106944724A (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710322182.8A Pending CN106944724A (en) | 2017-05-09 | 2017-05-09 | Unclear welding method of submerged-arc welding full penetration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182651A (en) * | 2021-04-25 | 2021-07-30 | 中建钢构天津有限公司 | H-shaped steel welding method without back chipping |
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|---|---|---|---|---|
| CN2912893Y (en) * | 2006-04-20 | 2007-06-20 | 武汉天高熔接材料有限公司 | One-side welding ceramic welding backing |
| CN201271794Y (en) * | 2008-09-03 | 2009-07-15 | 肖苏洋 | Both side welding ceramic liner without back chipping |
| CN103785932A (en) * | 2012-11-01 | 2014-05-14 | 上海振华重工(集团)股份有限公司 | Large-gap back-chipping-free welding process for I-shaped groove of middle thick plate |
| CN103934543A (en) * | 2014-03-14 | 2014-07-23 | 中建钢构有限公司 | Welding backing plate mounting method |
-
2017
- 2017-05-09 CN CN201710322182.8A patent/CN106944724A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2912893Y (en) * | 2006-04-20 | 2007-06-20 | 武汉天高熔接材料有限公司 | One-side welding ceramic welding backing |
| CN201271794Y (en) * | 2008-09-03 | 2009-07-15 | 肖苏洋 | Both side welding ceramic liner without back chipping |
| CN103785932A (en) * | 2012-11-01 | 2014-05-14 | 上海振华重工(集团)股份有限公司 | Large-gap back-chipping-free welding process for I-shaped groove of middle thick plate |
| CN103934543A (en) * | 2014-03-14 | 2014-07-23 | 中建钢构有限公司 | Welding backing plate mounting method |
Non-Patent Citations (2)
| Title |
|---|
| 张蕾: "《钢结构制作与安装》", 31 July 2013, 哈尔滨工业大学出版社 * |
| 陈倩清: "《船舶焊接工艺学》", 30 September 2005, 哈尔滨工程大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182651A (en) * | 2021-04-25 | 2021-07-30 | 中建钢构天津有限公司 | H-shaped steel welding method without back chipping |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170714 |
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| RJ01 | Rejection of invention patent application after publication |