CN104526111A - Wide-gap vertical butt-joint single face CO2 welding technology and copper gasket special for welding technology - Google Patents
Wide-gap vertical butt-joint single face CO2 welding technology and copper gasket special for welding technology Download PDFInfo
- Publication number
- CN104526111A CN104526111A CN201410798456.7A CN201410798456A CN104526111A CN 104526111 A CN104526111 A CN 104526111A CN 201410798456 A CN201410798456 A CN 201410798456A CN 104526111 A CN104526111 A CN 104526111A
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- welding
- shaped body
- groove
- broad gap
- welding procedure
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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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
- B23K9/0356—Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being a tape or strip
-
- 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
- B23K37/003—Cooling means
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a wide-gap vertical butt-joint single face CO2 welding technology. The welding technology comprises the following steps that S1, a copper gasket is arranged on the back face of a wide-gap groove in a cushioned mode; S2, backing weld is carried out on the front face of the groove, and the copper gasket is cooled when the groove is welded; S3, multi-way filling welding is carried out. The invention further discloses the copper gasket special for the welding technology. The copper gasket comprises a strip-shaped body, the strip-shaped body at least comprises an attaching face, a groove is formed in the attaching face in the length direction of the strip-shaped body and filled with a ceramic material, a channel is formed in the strip-shaped body in the length direction, a blind hole is formed in the side wall face of the strip-shaped body, and the end of the blind hole is communicated with the channel. The toughness of a weld joint zone can be effectively improved, the toughness of a heat affected zone can be effectively prevented from lowering, and generation of inclusion is eradicated.
Description
Technical field
The present invention relates to welding technology field, particularly relate to a kind of broad gap vertical docking one side CO
2welding procedure and special purpose copper liner.
Background technology
Broad gap vertical docking one side CO
2vertical position of welding welding when weldering (calling broad gap weldering in the following text) main purpose is joint ultra-wide gap 8 ~ 23 ㎜ large for hull.Current hull closes up greatly welding many employings ceramic substrate CO
2weldering and electro-gas (enclosed) welding, for the former its clearance requirement at 5 ~ 8 ㎜, the groove gap scene of ultra-wide adopts " putting on flesh " (i.e. groove built-up welding) technique, and heap postwelding finishing groove is to standard clearance (10 below ㎜), and its production efficiency is had a greatly reduced quality.For the weld seam in ultra-wide gap, if directly carry out welding, affecting backing run and can produce serious segregation and field trash due to ceramic substrate, even produces the crackle of macroscopic view.When gap is 12 ㎜, sealing run surface forming is very poor, and too much skull causes foundary weight water, and cause generation incompletely filling, in addition, overheated weld seam has melted darker ceramic substrate, and the shaping difference of sealing run is dark-coloured in ash.And 8 ㎜ are not more than for the latter's electro-gas (enclosed) welding clearance requirement, when gap reaches 12 ㎜, can produce hot straining embrittlement and heat affected area impact flexibility does not reach requirement due to the large weld heat-affected zone of weld heat input, therefore a lot of shipyard is limited to use.
Summary of the invention
Technical problem to be solved by this invention is: the broad gap vertical docking one side CO providing a kind of and effectively can improving welded seam area impact flexibility, not producing field trash and deviation when welding
2welding procedure, also provides one to carry out broad gap vertical docking one side CO in addition
2special purpose copper liner during welding.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of broad gap vertical docking one side CO
2welding procedure, comprises the steps:
S1: copper lining on the groove back side pad of broad gap;
S2: carry out backing welding in front, carries out cooling processing when welding to copper lining;
S3: carry out multiple tracks and fill weldering.
The present invention also provides one to realize broad gap vertical docking one side CO
2the special purpose copper liner of welding procedure, comprise bar-shaped body, described bar-shaped body at least comprises a binding face, groove is offered on described binding face, along bar-shaped body length direction, passage is offered along its length in described bar-shaped body inside, the side wall surface of described bar-shaped body offers blind hole, and the end of described blind hole is connected with described passage.
Beneficial effect of the present invention is: first, the present invention is owing to adopting copper lining, therefore just do not deposit ceramic substrate to be in the prior art melted and to stir and produce the problem of field trash, thus effectively stop to produce field trash and deviation, secondly, while carrying out single track backing welding, copper lining is cooled, forcing functions reduces weld heat input, multi-pass welding is adopted at filling capping thereafter, weld heat input controls at below 2kJ/ ㎜, heat affected area would not produce overheated structure, there is not hot straining embrittlement problem simultaneously, effectively can improve the impact flexibility of welded seam area and effectively prevent the decline of heat affected area toughness, finally adopt copper lining, after welding, appearance of weld is attractive in appearance, stingless, beautiful, and on macrospecimen, backing run crystal grain is tiny and even.
Accompanying drawing explanation
Fig. 1 is preferred embodiment of the present invention broad gap vertical docking one side CO
2the FB(flow block) of welding procedure;
Fig. 2 is the structural representation of preferred embodiment of the present invention copper lining;
Fig. 3 is the structural representation after the copper lining laminating mother metal of the preferred embodiment of the present invention;
Fig. 4 is the structural representation that the preferred embodiment of the present invention adopts welding tractor;
Fig. 5 is the structural representation of preferred embodiment of the present invention multi-pass welding.
Label declaration:
1, bar-shaped body; 2, passage; 3, blind hole; 4, groove; 5, mother metal; 6, welding tractor; 101, backing welding; 102, second weldering; 103, the 3rd road weldering.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
The design of most critical of the present invention is: provide a kind of broad gap vertical docking one side CO
2welding procedure, adopts copper lining in processing step, and carries out cooling processing to copper lining.The present invention effectively improves welded seam area toughness, stops field trash and generates, effectively prevent the decline of heat affected area toughness simultaneously.
Refer to Fig. 1, present embodiment broad gap vertical docking one side CO
2welding procedure, comprises the steps:
S1: copper lining on the pad of the broad gap groove back side;
S2: carry out backing welding in front, and when welding, cooling processing is carried out to copper lining;
S3: carry out multiple tracks and fill welding.
From foregoing description, beneficial effect of the present invention is: first, the present invention is owing to adopting copper lining, therefore just do not deposit ceramic substrate to be in the prior art melted and to stir and produce the problem of field trash, thus effectively stop to produce field trash and deviation, secondly, cool immediately when carrying out single track backing welding, forcing functions reduces heat input, multi-pass welding welding is adopted at filling capping thereafter, heat input controls at below 2kJ/ ㎜, Seam and heat effected zone would not produce overheated structure, there is not hot straining embrittlement problem simultaneously, effectively can improve the impact flexibility of welded seam area and effectively prevent the decline of heat affected area toughness, finally, adopt the copper lining of composite construction, after welding, appearance of weld is attractive in appearance stingless, beautiful, on macrospecimen, backing run crystal grain is tiny and even, the indices of mechanical performance reaches related specifications requirement.
Further, in step S2, backing welding adopts flux-cored wire, and gage of wire is 1.2 ㎜.
Further, fill weldering in described step S3 and adopt flux-cored wire, gage of wire is 1.2 ㎜.
Further, in described step S3, welding current is 95 ~ 160A.
From foregoing description, according to the large weld needs of reality, the welding wire welding current 95 ~ 160A of fit diameter 1.2 ㎜ is suitable scope, adopting the electric current within the scope of this to carry out welding can continuous welding operation, thus improve operating efficiency, reduce welding line joint, solve the quality problems of welding point powder injection molding difficulty in existing construction.
Further, the type of cooling of described step S2 is water cooling.
From foregoing description, in the present embodiment, water cooling is the preferred type of cooling, adopts water cooling effectively can reduce the cost of cooling medium, and water cooling operation is simultaneously ripe, stability is higher, in some other embodiment, certainly also can adopt other the type of cooling, such as air cooling.
In addition, invention also provides one to realize broad gap vertical docking one side CO
2the special purpose copper liner of welding procedure, consult Fig. 2 and Fig. 3, this copper lining comprises bar-shaped body 1, described bar-shaped body 1 at least comprises a binding face, groove 4 is offered with civilian dress ceramic material on described binding face, along bar-shaped body 1 length direction, described bar-shaped body 1 inside offers passage 2 along its length, and the side wall surface of described bar-shaped body 1 offers blind hole 3, and the end of described blind hole 3 is connected with described passage 2.
From foregoing description, beneficial effect of the present invention is: first, the present invention is owing to adopting copper lining rapid heat dissipation, therefore the problem producing field trash in the prior art because overheated ceramic substrate is melted stirring is not just deposited, thus effectively stop field trash, secondly, adopt copper copper lining, appearance of weld rule after welding, neat, on macrospecimen, backing run crystal grain is tiny and even.
Together consult Fig. 4 and Fig. 5, welding tractor 6 is adopted to carry out single-sided welding, binding face for the back side of mother metal 5 groove side of fitting using the liner as carrying molten welding slag, opening part to blind hole 3 adds cooling water, cooling water flows through whole copper lining by passage 2, thus the heat that copper lining during welding absorbs is taken away, realize the forcing functions to backing run.In the present embodiment, carry out second weldering 102 and the 3rd road weldering 103 after carrying out backing welding 101 respectively, before carrying out second weldering 102 and the 3rd road weldering 103, backing welding 101 adopts the above-mentioned cooling processing means adding cooling water in copper lining.
Further, described passage 2 is opened in the center of described bar-shaped body 1.
From foregoing description, the center that passage 2 is opened in bar-shaped body 1 make cooling water can evenly the heat of absorption all directions, avoid causing amount of localized heat overheated, certainly, in some other embodiment, be also arranged to binary channels or multichannel.
Further, described groove 4 fills ceramic material.
From foregoing description, when welding, groove 4 is aimed at weld seam and is welded, and can form comparison rule, neat bead contour after welding like this at the back side of groove because ceramic material part is melted.
Further, described bar-shaped body 1 is cuboid, described groove 4 is opened on two adjacent side wall surfaces of cuboid with described blind hole 3, the length of this bar-shaped body 1 is generally 500 ~ 700 ㎜, blind hole 3 openend and groove 4 lay respectively at two adjacent sides, such convenience is add water in copper lining carrying out cooling, in addition, makes brass pay somebody's debt and expect repayment later sliceable use at the weld seam facing length.
Please refer to Fig. 2 and Fig. 3, embodiments of the invention one are: the above-mentioned broad gap that realizes founds docking one side CO
2the special purpose copper liner of welding procedure, this copper lining comprises bar-shaped body 1, described bar-shaped body 1 at least comprises a binding face, on described binding face, groove 4 is offered along bar-shaped body 1 length direction, described bar-shaped body 1 inside offers passage 2 along its length, the side wall surface of described bar-shaped body 1 offers blind hole 3, the end of described blind hole 3 is connected with described passage 2, described passage 2 is opened in the center of described bar-shaped body 1, the cross section of described groove 4 is square, described bar-shaped body 1 is cuboid, described groove 4 is opened on two adjacent side wall surfaces of cuboid with described blind hole 3, the length of this bar-shaped body 1 is generally 500 ~ 700 ㎜, blind hole 3 openend and groove 4 lay respectively at two adjacent sides.
In sum, broad gap provided by the invention vertical docking one side CO
2welding procedure, this technique can effectively be stopped to produce field trash and deviation, would not produce overheated structure with heat affected zone, and the impact flexibility that effectively can improve welded seam area and the toughness preventing heat affected area decline, adopt this technique to make to weld, its appearance of weld is attractive in appearance, stingless, beautiful.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a broad gap vertical docking one side CO
2welding procedure, is characterized in that, comprises the steps:
S1: copper lining on the back side pad of broad gap groove;
S2: carry out backing welding in groove front, carries out cooling processing to copper lining during welding;
S3: carry out multiple tracks and fill welding.
2. broad gap according to claim 1 vertical docking one side CO
2welding procedure, is characterized in that: in described step S2, backing welding adopts flux-cored wire, and gage of wire is 1.2 ㎜.
3. broad gap according to claim 1 vertical docking one side CO
2welding procedure, is characterized in that: fill weldering in described step S3 and adopt flux-cored wire, gage of wire is 1.2 ㎜.
4. broad gap according to claim 1 vertical docking one side CO
2welding procedure, is characterized in that: in described step S3, welding current is 95 ~ 160A.
5. broad gap according to claim 1 vertical docking one side CO
2welding procedure, is characterized in that: the type of cooling of described step S2 is water cooling.
6. one kind realizes broad gap vertical docking one side CO
2the special purpose copper liner of welding procedure, it is characterized in that, comprise bar-shaped body, described bar-shaped body at least comprises a binding face, groove is offered on described binding face, along bar-shaped body length direction, passage is offered along its length in described bar-shaped body inside, and the side wall surface of described bar-shaped body offers blind hole, and the end of described blind hole is connected with described passage.
7. the broad gap that realizes according to claim 7 founds docking one side CO
2the special purpose copper liner of welding procedure, is characterized in that: described passage is opened in the center of described bar-shaped body.
8. the broad gap that realizes according to claim 7 founds docking one side CO
2the special purpose copper liner of welding procedure, is characterized in that: fill ceramic material in described groove.
9. the broad gap that realizes according to any one of claim 6 ~ 8 founds docking one side CO
2the special purpose copper liner of welding procedure, is characterized in that: described bar-shaped body is cuboid, and described groove and described blind hole are opened on two adjacent side wall surfaces of cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798456.7A CN104526111A (en) | 2014-12-19 | 2014-12-19 | Wide-gap vertical butt-joint single face CO2 welding technology and copper gasket special for welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798456.7A CN104526111A (en) | 2014-12-19 | 2014-12-19 | Wide-gap vertical butt-joint single face CO2 welding technology and copper gasket special for welding technology |
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| Publication Number | Publication Date |
|---|---|
| CN104526111A true CN104526111A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410798456.7A Pending CN104526111A (en) | 2014-12-19 | 2014-12-19 | Wide-gap vertical butt-joint single face CO2 welding technology and copper gasket special for welding technology |
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| CN (1) | CN104526111A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014187A (en) * | 2015-07-07 | 2015-11-04 | 中国化学工程第四建设有限公司 | Single-side welding and double-side forming method for ceramic gasket of rubber lined tank |
| CN111590164A (en) * | 2020-05-29 | 2020-08-28 | 广船国际有限公司 | Sheet vertical butt joint combined joint and welding method thereof |
| CN112222716A (en) * | 2020-09-11 | 2021-01-15 | 中联重科股份有限公司 | Welding pad device and welding pad system |
| CN116786951A (en) * | 2023-07-12 | 2023-09-22 | 中国五冶集团有限公司 | Butt welding method for steel structure with wide gap |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014187A (en) * | 2015-07-07 | 2015-11-04 | 中国化学工程第四建设有限公司 | Single-side welding and double-side forming method for ceramic gasket of rubber lined tank |
| CN111590164A (en) * | 2020-05-29 | 2020-08-28 | 广船国际有限公司 | Sheet vertical butt joint combined joint and welding method thereof |
| CN112222716A (en) * | 2020-09-11 | 2021-01-15 | 中联重科股份有限公司 | Welding pad device and welding pad system |
| CN116786951A (en) * | 2023-07-12 | 2023-09-22 | 中国五冶集团有限公司 | Butt welding method for steel structure with wide gap |
| CN116786951B (en) * | 2023-07-12 | 2024-03-19 | 中国五冶集团有限公司 | Butt welding method for steel structure with wide gap |
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Application publication date: 20150422 |
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