CN107283031A - A kind of inconel weld complete penetration welding method - Google Patents
A kind of inconel weld complete penetration welding method Download PDFInfo
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- CN107283031A CN107283031A CN201710617749.4A CN201710617749A CN107283031A CN 107283031 A CN107283031 A CN 107283031A CN 201710617749 A CN201710617749 A CN 201710617749A CN 107283031 A CN107283031 A CN 107283031A
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- welding
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
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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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- 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
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a kind of inconel weld complete penetration welding method, it comprises the following steps：1) bevel：2) bottoming is welded：With 230A~245A current strength and 26V~27V arc voltage, and bottoming welding is carried out in inconel weld with negative polarity electric current；80%Ar+20%C0 is used during welding2Mixed gas is protected to electric arc, speed of welding:50cm/Min‑90cm/Min；3) filling welding and cover welding：With 270A~300A current strength and 29V~33V arc voltage, and welding and cover welding are filled on the basis of bottoming welding in inconel weld with positive polarity electric current；Speed of welding 45cm/Min~55cm/Min, uses 80%Ar+20%C0 during welding2Electric arc is protected.Not only welding efficiency is high for above-mentioned inconel weld complete penetration welding method；And welding quality is good, solder yield can be effectively improved, doing over again for unqualified weld seam is reduced.
Description
Technical field
The invention belongs to welding technique, more particularly to a kind of inconel weld complete penetration welding method.
Background technology
It is current known, when designing welding box beam part, to some key positions, such as:Stress is larger or safe class
Higher position, the quality requirement of Welded Joints is high.The unfavorable of stress concentration is produced in order to reduce not full penetration weld root
Influence, design often uses the design structure of full penetration.For two-sided reachable welding point, the side of back root cleaning can be used
Method realizes weld seam full penetration, and welding operation is fairly simple.But, the weld seam reachable to only one side, it is impossible to realize back root cleaning, only
It can be welded from one side, single gas metal-arc welding generally be used at present, it is desirable to full penetration is realized, to operating personnel
Skill set requirements are higher, and defect detecting test percent of pass is low, reprocess waste of manpower, material resources.Now conventional welding method is existed
Workpiece turning, carbon arc air gouging back chipping；Back of weld pasted with ceramic veneer is padded；Speed of welding is relatively low, welding efficiency is very low, welder's work
The drawback such as intensity is larger, welding cost is higher.
The content of the invention
It is an object of the invention to provide a kind of inconel weld complete penetration welding method, it has welding efficiency high and welding
The characteristics of quality is good, to solve above mentioned problem present in inconel weld full penetration process in the prior art.
For up to this purpose, the present invention uses following technical scheme：
A kind of inconel weld complete penetration welding method, it comprises the following steps：
1) bevel：V-type welding groove is opened on weldment, welding groove and its upper and lower both side surface are polished,
And iron rust, greasy dirt, oxide above are cleaned out, it is exposed metallic luster；
2) bottoming is welded：Using gas metal-arc welding welding procedure, with 230A~245A current strength and 26V~
27V arc voltage, and bottoming welding is carried out in inconel weld with negative polarity electric current；Used during welding gas flow for 10L~
14L/Min 80%Ar+20%C02Mixed gas is protected to electric arc, speed of welding:50cm/Min-90cm/Min；
3) filling welding and cover welding：Gas metal-arc welding welding procedure is used again, with 270A~300A's
The arc voltage of current strength and 29V~33V, and filled out with positive polarity electric current in inconel weld on the basis of bottoming welding
Fill welding and cover welding；Speed of welding 45cm/Min~55cm/Min, uses gas flow for 15L~18L/Min during welding
80%Ar+20%C02Electric arc is protected.
Especially, the step 1) in weldment include perpendicular component and cross member, the V-type welding groove is opened in described
On perpendicular component, bevel angle is 30 °~50 °, and groove gap ensures in 3mm~4mm.
Especially, the step 1) in V-type welding groove be wedge angle, no root face is so conducive to consumable electrode gas-arc
When welding backing welding, it is easier to full penetration；Simultaneously to being polished in the range of welding groove and its 30mm of upper and lower both side surface.
Especially, the step 2) in welding gun away from groove gap 8mm~12mm, 25 °~30 ° of angle is conducive to electric arc deep
Enter to the root of weld, strengthen the protection to welding pool and the welding back side.
Especially, the step 2) in welding process, during blow-out, welding rod passes through to current interruption is lifted rapidly above molten bath
When welding mask crosses filter and only sees molten bath center a luminous point is presented, the striking again at blow-out rapidly is then rapid disconnected
Arc, to have heat transfer and protective effect to back of weld, reduces the cooling velocity in molten bath, it is to avoid burner is produced at blow-out and is split
Line and back of weld shrinkage cavity.
Especially, the step 2) in medicine core gage of wire:1.2mm；Electrode extension:20mm.
Especially, the step 3) in electrode extension be 25mm~40mm.
Especially, the step 3) middle filling is welded and the top surface of cover welding is curved, and cover welding top surface arc
The radian of shape is more than the radian of filling welding top surface arc.
Especially, diameter 1mm~3mm of the luminous point.
Beneficial effects of the present invention are that the inconel weld complete penetration welding method not only welds effect compared with prior art
Rate is high；And welding quality is good, solder yield can be effectively improved, doing over again for unqualified weld seam is reduced.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is only to aid in understanding the present invention, is not construed as the concrete restriction to the present invention.
A kind of inconel weld complete penetration welding method, so that material is Q345B 16mm steel plate as an example, technical scheme includes
Following steps:
The first step, bevel.The bevel shape of perpendicular component is into V-type, 40 ° of bevel angle, and special requirement are wedge angles, without blunt
Side.When being so conducive to gas metal-arc welding backing welding, it is easier to full penetration.To welding groove and its upper and lower both sides table
Polished in the range of the 30mm of face, and clean out iron rust, greasy dirt, oxide above, it is exposed metallic luster.Groove gap
Ensure in 3mm~4mm.When perpendicular component and the positioning of cross member mutual alignment, it is not recommended that using tack welding, spot welding on weld seam, because
Weld seam can have a negative impact when easily to welding.
Second step, with gas metal-arc welding welding procedure, using the wlding of Φ 1.2mm specifications, with 230~245A's
The arc voltage of current strength and 26~27V, and bottoming welding is carried out in inconel weld with negative polarity electric current；Gas is used during welding
Body flow is 10~14L/Min 80%Ar+20%C02Mixed gas is protected to electric arc；Flux-cored wire diameter:1.2mm；
Electrode extension:20mm；Speed of welding:50cm/Min~90cm/Min.Backing welding is the basis for ensureing single welding full penetration,
The factors such as height and position, angle, residence time, the speed of welding of welding gun are crucial.25 ° away from groove gap 10mm, angle of welding gun
~30 ° are conducive to electric arc to be deep into the root of weld, strengthen the protection to welding pool and the welding back side.Protecting effect is better, weldering
The easier full penetration of seam, the probability that the defect such as occurs shrinkage cavity, do not merged in back of weld is fewer.Back of weld is easiest at blow-out
Shrinkage cavity is produced, when solution is blow-out, welding rod lifts current interruption rapidly to molten bath top, when cherry red is presented in molten bath color,
When namely crossing filter by welding mask and only seeing molten bath center 2mm luminous point is presented, rapidly at blow-out again
Striking, then rapid current interruption.Such method has heat transfer and protective effect to back of weld, reduces the cooling speed in molten bath
Degree, it is to avoid crater crack and back of weld shrinkage cavity are produced at blow-out.Gesture, speed of welding are controlled during welding, if
Welding gun is long in the molten bath bottom residence time, weld seam can be caused too high, if excessive velocities can cause appearance of weld bad, speed
It is uniform, it can just obtain weld seam attractive in appearance.
3rd step, again with gas metal-arc welding welding procedure, using the welding wire of 1.2mm specifications, with 270~300A's
The arc voltage of current strength and 29~33V, and filled out with positive polarity electric current in inconel weld on the basis of bottoming welding
Fill welding and cover welding；Electrode extension 25mm~40mm, speed of welding 45cm/Min~55cm/Min, is used during welding
Gas flow is 15~18L/Min 80%Ar+20%C02Electric arc is protected；Welding terminates.Pay special attention to filling welding
Top surface with cover welding is curved, and the radian of cover welding top surface arc is more than the radian that top surface arc is welded in filling.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within the present invention's
Within the scope of protection domain and disclosure.
Claims (9)
1. a kind of inconel weld complete penetration welding method, it is characterised in that it comprises the following steps：
1) bevel：V-type welding groove is opened on weldment, welding groove and its upper and lower both side surface are polished, and clearly
Reason falls iron rust, greasy dirt, oxide above, it is exposed metallic luster；
2) bottoming is welded：Using gas metal-arc welding welding procedure, with 230A~245A current strength and 26V~27V
Arc voltage, and with negative polarity electric current inconel weld carry out bottoming welding；Gas flow is used during welding for 10L~14L/
Min 80%Ar+20%C02 mixed gas is protected to electric arc, speed of welding:50cm/Min-90cm/Min；
3) filling welding and cover welding：Gas metal-arc welding welding procedure is used again, with 270A~300A electric current
The arc voltage of intensity and 29V~33V, and weldering is filled on the basis of bottoming welding in inconel weld with positive polarity electric current
Connect and cover welding；Speed of welding 45cm/Min~55cm/Min, uses gas flow for 15L~18L/Min's during welding
80%Ar+20%C02Electric arc is protected.
2. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 1) in weldment bag
Perpendicular component and cross member are included, the V-type welding groove is opened on the perpendicular component, bevel angle is 30 °~50 °, between groove
Gap ensures in 3mm~4mm.
3. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 1) in V-type weld
Groove is wedge angle, no root face, when being so conducive to gas metal-arc welding backing welding, it is easier to full penetration；Simultaneously to welding
Polished in the range of groove and its 30mm of upper and lower both side surface.
4. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 2) in welding gun away from slope
Mouth gap 8mm~12mm, 25 °~30 ° of angle is conducive to electric arc to be deep into the root of weld, strengthens carrying on the back welding pool and welding
The protection in face.
5. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 2) in welding process
In, during blow-out, welding rod lifts current interruption rapidly to molten bath top, and crossing filter by welding mask only sees molten bath center presentation one
During luminous point, the striking again at blow-out rapidly, then rapid current interruption, so that there is heat transfer and protective effect to back of weld,
Reduce the cooling velocity in molten bath, it is to avoid crater crack and back of weld shrinkage cavity are produced at blow-out.
6. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 2) in flux-cored wire
Diameter:1.2mm；Electrode extension:20mm.
7. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 3) in welding wire stretch
Go out length for 25mm~40mm.
8. inconel weld complete penetration welding method as claimed in claim 1, it is characterised in that the step 3) middle filling welding
Top surface with cover welding is curved, and the radian of cover welding top surface arc is more than the radian that top surface arc is welded in filling.
9. inconel weld complete penetration welding method as claimed in claim 5, it is characterised in that the diameter of the luminous point
1mm~3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710617749.4A CN107283031A (en) | 2017-07-26 | 2017-07-26 | A kind of inconel weld complete penetration welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710617749.4A CN107283031A (en) | 2017-07-26 | 2017-07-26 | A kind of inconel weld complete penetration welding method |
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| CN107283031A true CN107283031A (en) | 2017-10-24 |
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| CN201710617749.4A Pending CN107283031A (en) | 2017-07-26 | 2017-07-26 | A kind of inconel weld complete penetration welding method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526651A (en) * | 2018-02-26 | 2018-09-14 | 中国华冶科工集团有限公司 | A kind of plate downhand welding method |
| CN111014896A (en) * | 2019-12-10 | 2020-04-17 | 北京北方车辆集团有限公司 | Straight line broken arc pendulum vertical welding method |
| CN112025045A (en) * | 2020-08-31 | 2020-12-04 | 中车大同电力机车有限公司 | Butt weld seam single-side welding double-side forming manufacturing process |
| CN116833525A (en) * | 2023-07-26 | 2023-10-03 | 广船国际有限公司 | Welding method for marine box-type column structure and ship |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526651A (en) * | 2018-02-26 | 2018-09-14 | 中国华冶科工集团有限公司 | A kind of plate downhand welding method |
| CN111014896A (en) * | 2019-12-10 | 2020-04-17 | 北京北方车辆集团有限公司 | Straight line broken arc pendulum vertical welding method |
| CN111014896B (en) * | 2019-12-10 | 2022-04-22 | 北京北方车辆集团有限公司 | Straight line broken arc pendulum vertical welding method |
| CN112025045A (en) * | 2020-08-31 | 2020-12-04 | 中车大同电力机车有限公司 | Butt weld seam single-side welding double-side forming manufacturing process |
| CN116833525A (en) * | 2023-07-26 | 2023-10-03 | 广船国际有限公司 | Welding method for marine box-type column structure and ship |
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Application publication date: 20171024 |