CN106624292A - Welding process for joint cover plates of blocks and modular plants - Google Patents
Welding process for joint cover plates of blocks and modular plants Download PDFInfo
- Publication number
- CN106624292A CN106624292A CN201611049115.5A CN201611049115A CN106624292A CN 106624292 A CN106624292 A CN 106624292A CN 201611049115 A CN201611049115 A CN 201611049115A CN 106624292 A CN106624292 A CN 106624292A
- Authority
- CN
- China
- Prior art keywords
- welding
- cover plates
- node
- joint
- lower cover
- 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
- 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
- B23K9/235—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
A welding process for joint cover plates of blocks and modular plants comprises the following steps: I, rolling single-joint pipes in joints, and performing double-side welding on longitudinal seam X grooves; II, pairing upper joint cover plates and lower joint cover plates at the two ends of the single-joint pipes; III, centering and aligning the head ends and the tail ends of the upper joint cover plates and the lower joint cover plates of the single-joint pipes, and fixing; IV, welding the upper cover plate and the lower cover plate, which are paired in the middle, with supporting pipe sections, and hoisting and placing the upper cover plate and the lower cover plate at the upper edge of a tire, then starting up the tire, and welding the upper cover plate and the lower cover plate with single V grooves of the single-joint pipes; V, repeating the step IV, adjusting the stretching and contracting length of a cross arm of a welder, and welding the rest upper cover plates and lower cover plates with the single V grooves of the single-joint pipes; and VI, cutting off and polishing the supporting pipe sections and temporary fixing rib plates, performing joint separation on the single-joint pipes, and conducting processing inspection submission. According to the welding process, automatic rotation is realized, the joints are butted end to end, and mechanical welding is achieved; and besides, the welding quality, the welding speed and the welding security are greatly improved.
Description
Technical field
It is the present invention relates to welding procedure more particularly to a kind of for chunk and the Welder of module chemical plant node cover plate
Skill.Belong to Offshore Engineering field.
Background technology
The prefabricated order in the maximization and diversity with ocean engineering steel construction project, deep water chunk and module chemical plant
With require also more and more higher.Exist when being welded in welding node cover plate due to existing arc welding and carbon dioxide medicine core gas shield
Problems with：
1) because welding bead shaping is bad, qualification rate is relatively low；
2) because unit interval deposition rate is little, welding efficiency is relatively low；
3) larger due to welding loading, cover plate post welding distortion is larger, and the hot straightening workload of postwelding is than larger.
4) due to, workman long-time hand-held electrode holder very high to craftsmanship's level requirement, the sternnesses such as flue dust, high temperature are faced with
Test, construction environment is more severe, and security is not high.
The content of the invention
Present invention is primarily targeted at overcoming the disadvantages mentioned above that prior art is present, and provide a kind of chunk and modularization
The welding procedure of factory's node cover plate, it can not only be rotated automatically, and node head and the tail docking is got up, and be solved by manually
Qualification rate is relatively low caused by welding institute, the hot straightening workload of postwelding than it is larger the problems such as, realize automatic weld；And, greatly
The security of welding quality, speed of welding and welding is improve greatly, operating environment is improved, and improves security.
The purpose of the present invention is realized by technical scheme below：
A kind of welding procedure of chunk and module chemical plant node cover plate, it is characterised in that：Using following steps：
The first step：Single-unit pipe in node is rolled, and two-sided welding is carried out to longitudinal joint X-type groove；
Second step：Node upper and lower cover plates is grouping at single-unit pipe two ends, then, to node upper and lower cover plates and single-unit pipe
Single double V-groove carries out interruption positioning；
3rd step：The node upper and lower cover plates head and the tail of single-unit pipe are carried out into centering, and it is fixed；
4th step：The upper and lower cover plates center welding at node head and the tail two ends is supported into pipeline section, and upper and lower cover plates is lifted
Positioner top is placed on, then, starts positioner, welding upper and lower cover plates and single-unit pipe list double V-groove；
5th step：Repeat the 4th step, adjust the flexible length of the transverse arm of welding machine, weld remaining upper and lower cover plates and single-unit pipe
Single double V-groove；
6th step：Pipeline section, interim fixed gusset excision, polishing will be supported, single-unit pipe node is separated, and carries out process inspection declaration
Operation.
In the first step, single-unit pipe upper and lower ends hold in advance V45 ° of groove of one side successfully.
The welding is carried out using submerged arc welding machine.
Beneficial effects of the present invention：Due to adopting above-mentioned technical proposal, it can not only be rotated the present invention automatically, by node
Head and the tail docking is got up, and realizes automatic weld；And, the security of welding quality, speed of welding and welding is substantially increased,
Speed of welding is faster than prior art 2-3 times, improves operating environment, improves security.
Description of the drawings
Fig. 1 is the schematic front view of two classes node of the invention.
Fig. 2 is the upper and lower ring groove type schematic diagram of single-unit pipe of the present invention.
Fig. 3 is of the present invention group to, fixation welding cap plate schematic side view.
Fig. 4 is that single-unit pipe node head and the tail cover plate of the present invention fixes concatenation schematic front view.
Fig. 5 is that cover plate two sections of temporary support pipeline sections of center welding at single-unit pipe head and the tail two ends of the present invention install signal
Figure.
Fig. 6 is the present invention using positioner and direct current submerged arc welding machine welding schematic diagram.
Fig. 7 is that postwelding node of the present invention is separated, complete schematic diagram.
Major Symbol explanation in figure：
1. single-unit pipe, 2. node upper and lower cover plates, 3. interim fixed gusset, 4. temporary support pipeline section, 5. adjustment height turn
Tire, 6. direct current submerged arc welding machine.
Specific embodiment
The present invention adopts following steps：
The first step：Such as Fig. 1, shown in Fig. 2, the single-unit pipe 1 in node is rolled, and using submerged arc welding machine to longitudinal joint X
Type groove carries out two-sided welding；
Above-mentioned single-unit pipe upper and lower ends hold in advance V45 ° of groove of one side successfully.
Second step：As shown in figure 3, be grouping to node upper and lower cover plates 2 at single-unit pipe two ends, then, using handling weldering
Rifle, to node upper and lower cover plates 2 and single-unit pipe list double V-groove interruption positioning welding is carried out；
3rd step：As shown in figure 4, the head and the tail of node upper and lower cover plates 2 of single-unit pipe 1 are carried out into centering, and using interim
Gusset is welded and fixed；
4th step：As shown in Figure 5, Figure 6, the upper and lower cover plates 2 at node head and the tail two ends is hit exactly into two sections of support tubes of welding
Section, and cover plate lifting is placed on into positioner top, then, start positioner, using direct current submerged arc welding machine welded cover plate and single-unit pipe
Single double V-groove, then carry out processing the operations such as inspection declaration；
5th step：Repeat the 4th step, adjust the flexible length of the transverse arm of direct current submerged arc welding machine, weld remaining upper and lower cover plates
2 with single-unit pipe list double V-groove；If necessary, can 2 submerged arc welding machine balanced weldings；
6th step：As shown in fig. 7, pipeline section, interim fixed gusset excision, polishing, single-unit pipe node will be supported to separate, carry out
Process the operations such as inspection declaration.
Above-mentioned positioner is existing mature technology equipment, and the technology of not specified (NS) is prior art, therefore is repeated no more.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention, all
It is above example is made any simple modification, equivalent variations and modification according to the technical spirit of the present invention, still falls within
In the range of technical solution of the present invention.
Claims (3)
1. the welding procedure of a kind of chunk and module chemical plant node cover plate, it is characterised in that：Using following steps：
The first step：Single-unit pipe in node is rolled, and two-sided welding is carried out to longitudinal joint X-type groove；
Second step：Node upper and lower cover plates is grouping at single-unit pipe two ends, then, to node upper and lower cover plates and single-unit pipe list V
Type groove carries out interruption positioning；
3rd step：The node upper and lower cover plates head and the tail of single-unit pipe are carried out into centering, and it is fixed；
4th step：The upper and lower cover plates center welding at node head and the tail two ends is supported into pipeline section, and upper and lower cover plates lifting is placed
In positioner top, then, start positioner, welding upper and lower cover plates and single-unit pipe list double V-groove；
5th step：Repeat the 4th step, adjust the flexible length of the transverse arm of welding machine, weld remaining upper and lower cover plates and single-unit pipe list V
Type groove；
6th step：Pipeline section, interim fixed gusset excision, polishing will be supported, single-unit pipe node is separated, and carries out processing inspection declaration work
Sequence.
2. the welding procedure of chunk according to claim 1 and module chemical plant node cover plate, it is characterised in that：Described
In one step, single-unit pipe upper and lower ends hold in advance V45 ° of groove of one side successfully.
3. the welding procedure of chunk according to claim 1 and module chemical plant node cover plate, it is characterised in that：The weldering
Connect is carried out using submerged arc welding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049115.5A CN106624292B (en) | 2016-11-25 | 2016-11-25 | The welding procedure of chunking and module chemical plant node cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049115.5A CN106624292B (en) | 2016-11-25 | 2016-11-25 | The welding procedure of chunking and module chemical plant node cover board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106624292A true CN106624292A (en) | 2017-05-10 |
| CN106624292B CN106624292B (en) | 2018-11-27 |
Family
ID=58811847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611049115.5A Active CN106624292B (en) | 2016-11-25 | 2016-11-25 | The welding procedure of chunking and module chemical plant node cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814490A (en) * | 2019-10-19 | 2020-02-21 | 秦河新材股份有限公司 | Butt welding device for cold-rolled steel bar |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08243754A (en) * | 1995-03-08 | 1996-09-24 | Nippon Steel Corp | Inner face welding method of clad steel tube |
| JP2003136130A (en) * | 2001-11-01 | 2003-05-14 | Nippon Steel Corp | Method for manufacturing inner and outer surface submerged arc welded steel pipe excellent in toughness characteristics of seam welded portion |
| US20040234715A1 (en) * | 2003-05-20 | 2004-11-25 | John Gandy | Method of manufacturing stainless steel pipe for use in piping systems |
| CN101837387A (en) * | 2009-03-16 | 2010-09-22 | 王澄 | Automated manufacturing method and production line design of large-scale steel tube |
| CN102489947A (en) * | 2011-11-30 | 2012-06-13 | 攀钢集团工程技术有限公司 | Bottom chord tube manufacturing process of girder of steel tube concrete truss beam bridge |
| CN104625648A (en) * | 2015-01-19 | 2015-05-20 | 太原重工股份有限公司 | Technological method for machining square and rectangular pipes |
| CN105643048A (en) * | 2016-03-31 | 2016-06-08 | 合肥紫金钢管有限公司 | Manufacturing technology for long large-diameter LSAW (longitudinal submerged arc welding) pile pipe for ocean platform |
| CN205465036U (en) * | 2016-01-08 | 2016-08-17 | 宝钢集团新疆八一钢铁有限公司 | Welded structure that submerged arc welding steel pipe sealed |
-
2016
- 2016-11-25 CN CN201611049115.5A patent/CN106624292B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08243754A (en) * | 1995-03-08 | 1996-09-24 | Nippon Steel Corp | Inner face welding method of clad steel tube |
| JP2003136130A (en) * | 2001-11-01 | 2003-05-14 | Nippon Steel Corp | Method for manufacturing inner and outer surface submerged arc welded steel pipe excellent in toughness characteristics of seam welded portion |
| US20040234715A1 (en) * | 2003-05-20 | 2004-11-25 | John Gandy | Method of manufacturing stainless steel pipe for use in piping systems |
| CN101837387A (en) * | 2009-03-16 | 2010-09-22 | 王澄 | Automated manufacturing method and production line design of large-scale steel tube |
| CN102489947A (en) * | 2011-11-30 | 2012-06-13 | 攀钢集团工程技术有限公司 | Bottom chord tube manufacturing process of girder of steel tube concrete truss beam bridge |
| CN104625648A (en) * | 2015-01-19 | 2015-05-20 | 太原重工股份有限公司 | Technological method for machining square and rectangular pipes |
| CN205465036U (en) * | 2016-01-08 | 2016-08-17 | 宝钢集团新疆八一钢铁有限公司 | Welded structure that submerged arc welding steel pipe sealed |
| CN105643048A (en) * | 2016-03-31 | 2016-06-08 | 合肥紫金钢管有限公司 | Manufacturing technology for long large-diameter LSAW (longitudinal submerged arc welding) pile pipe for ocean platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814490A (en) * | 2019-10-19 | 2020-02-21 | 秦河新材股份有限公司 | Butt welding device for cold-rolled steel bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106624292B (en) | 2018-11-27 |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: Offshore Oil Engineering (Qingdao) Co., Ltd. Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Offshore Oil Engineering Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: Offshore Oil Engineering (Qingdao) Co., Ltd. Patentee before: China National Offshore Oil Corporation Co-patentee before: Offshore Oil Engineering Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |