CN106903466B - Apparatus for shaping and technique in a kind of welded still pipe weld seam - Google Patents
Apparatus for shaping and technique in a kind of welded still pipe weld seam Download PDFInfo
- Publication number
- CN106903466B CN106903466B CN201710253488.2A CN201710253488A CN106903466B CN 106903466 B CN106903466 B CN 106903466B CN 201710253488 A CN201710253488 A CN 201710253488A CN 106903466 B CN106903466 B CN 106903466B
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- Prior art keywords
- thermally conductive
- board mount
- conductive board
- heat
- conducting plate
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- 238000007493 shaping process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses apparatus for shaping and techniques in a kind of welded still pipe weld seam, have the characteristics that simple technological operation, convenient maintenance and replacement and does not need every kind of caliber outfit different device, its technical solution are as follows: including heat-conducting plate and thermally conductive board mount, the thermally conductive board mount includes thermally conductive board mount fixed cell and thermally conductive board mount movable units, the thermally conductive board mount movable units are equipped with flexible adjustment system, are connected between the thermally conductive board mount fixed cell and thermally conductive board mount movable units by flexible adjustment system；The heat-conducting plate is set on thermally conductive board mount fixed cell, and the upper surface of the heat-conducting plate is equipped with heat-conducting plate groove.
Description
Technical field
The present invention relates to welding fields, more particularly to apparatus for shaping and technique in a kind of welded still pipe weld seam.
Background technique
Direct current TIG high-speed welding is one of the key technology during current steel pipe's production, but is welded itself deposition rate by TIG
Low, the disadvantages of fusion penetration is shallow limitation, speed of welding has become the bottleneck of thin-wall steel tube output increased at present.And appearance of weld is
The key factor of welding quality and speed is influenced, the inside weld often occurred during direct current TIG high-speed welding is curvilinear,
The defects of reinforcement is uneven, width is uneven, these defects seriously affect tube quality.Especially for pressure-bearing pipe
For, internal weld seams unevenly easily cause the stress during pressure-bearing to concentrate and cause to burst in this region.Therefore, welded still pipe
Shaping technique generates therewith in weld seam.
Shaping process is to contact that it is made to force molding to obtain uniformly with inside weld by heat-conducting plate in welded still pipe weld seam
Weld seam, and protective gas protection internal weld seams are passed to anti-oxidation, the cooling heat-conducting plate of cooling solution is passed to reduce scaling loss.It uses
The technique can increase substantially speed of welding.But there are still works for shaping process in welded still pipe weld seam in the prior art
The defects of skill is complicated for operation, apparatus for shaping inconvenient maintenance.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides apparatus for shaping and technique in a kind of welded still pipe weld seam,
It simple, convenient maintenance and replacement and does not need every kind of caliber and is equipped with different device with technological operation, and single group device is suitable for more
The characteristics of kind different tube diameters.
It is described the present invention provides apparatus for shaping in a kind of welded still pipe weld seam, including heat-conducting plate and thermally conductive board mount
Thermally conductive board mount includes thermally conductive board mount fixed cell and thermally conductive board mount movable units；The thermally conductive board mount is removable
Unit is equipped with flexible adjustment system, passes through between the thermally conductive board mount fixed cell and thermally conductive board mount movable units
The connection of flexible adjustment system；The heat-conducting plate is set on thermally conductive board mount fixed cell, and the upper surface of the heat-conducting plate is set
There is heat-conducting plate groove, so that steel duct weld seam is forced molding by heat-conducting plate groove.
Further, the thermally conductive board mount can be selected the metals such as carbon steel, stainless steel and be made.
Further, the thermally conductive board mount fixed cell includes bottom plate, baffle I, baffle II and pulling plate, the bottom
One end of plate is equipped with baffle I, and the other end of the bottom plate is equipped with baffle II, and the side of the baffle II is equipped with pulling plate.It leads
The effect of hot plate bracket fixed cell is fixed heat-conducting plate, by the blocking in multiple faces to guarantee that heat-conducting plate forces moulding section always
It is contacted with inside weld.
Further, the bottom plate is door type structure, and it is empty that the baffle I, baffle II and bottom plate form semi-cylindrical
Between.
Further, the section of the heat-conducting plate is arc-shaped, and the heat-conducting plate is set in semi-cylindrical space；It leads
Hot plate can be used the high-thermal conductive metals such as copper, silver and be made.
Further, the side of the heat-conducting plate is equipped with coolant liquid circulation nozzle and protection gas gas circuit nozzle.
Further, the thermally conductive board mount movable units are half cylindrical structure, and the thermally conductive board mount can
The upper surface of mobile unit is door type structure, and the inside of the thermally conductive board mount movable units is semi-cylindrical cavity.It leads
Hot plate bracket movable units adapt to different calibers by included flexible adjustment system.
Further, the two sides of the thermally conductive board mount movable units are equipped with groove.
Further, the flexible adjustment system passes through the upper surface of thermally conductive board mount movable units and is fixed on recessed
In slot.The flexible adjustment system includes the spring that several groups are arranged in pairs, and the spring one end is fixed under bottom plate
The other end in portion, the spring is fixed in groove.Flexible by spring realizes thermally conductive board mount movable units
Lower movement is to adapt to the steel pipes of different tube diameters.
The present invention also provides shaping process in a kind of welded still pipe weld seam, comprising the following steps:
Step 1 selection and apparatus for shaping in the matched welded still pipe weld seam of steel pipe sizes；
Coolant liquid is recycled nozzle to step 2 and protection gas gas circuit nozzle is connect with coolant duct, protector pipeline respectively；
Apparatus for shaping in welded still pipe weld seam is put into steel pipe inner wall by step 3, is pushed into steel duct after compression, is made heat-conducting plate
The starting point of groove is located at molten bath end；
Apparatus for shaping makes center line and the internal weld seams center line position of heat-conducting plate groove in step 4 rotating welding steel pipe seam
In same plane；
Step 5 starts to weld after installing.
Further, in the step 1 with the matched requirement of steel pipe sizes are as follows: heat-conducting plate highest point in a free state
The distance between thermally conductive board mount movable units minimum point is greater than pipe diameter, under compressive state heat-conducting plate highest point with lead
The distance between hot plate bracket movable units minimum point is less than pipe diameter.
Compared with prior art, the beneficial effects of the present invention are:
1, the high thermal conductivities such as copper, silver gold can can be selected in all parts material in the present invention there are many selection, heat-conducting plate
Belong to, thermally conductive board mount can be selected the metals such as carbon steel, stainless steel, the control to material cost may be implemented；
2, operation of the present invention is simple, and the specification that need to only choose needs gently presses push-in steel duct with hand, drops significantly
Low cost of labor and labor intensity of workers；
3, by heat-conducting plate groove force molding after internal weld seams uniform bright, except because cause specific (special technical requirement,
Welding defect, heat-conducting plate scaling loss etc.) it does not need to carry out extra process outside, it improves product quality and reduces production cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is structural schematic diagram main view of the invention；
Fig. 3 is structural schematic diagram top view of the invention；
Fig. 4 is thermally conductive board mount fixed cell main view of the invention；
Wherein, 1- heat-conducting plate, 2- heat-conducting plate groove, 3- coolant liquid recycle nozzle, and 4- protects gas gas circuit nozzle, 5- heat-conducting plate
Bracket fixed cell, 6- flexible adjustment system, the thermally conductive board mount movable units of 7-, 8- baffle I, 9- pulling plate, 10- bottom plate, 11-
Baffle II.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, complex operation, apparatus for shaping inconvenient maintenance etc. exists in the prior art no
Foot, in order to solve technical problem as above, the invention proposes apparatus for shaping and techniques in a kind of welded still pipe weld seam.
In a kind of typical embodiment of the invention, as Figure 1-Figure 4, provide whole in a kind of welded still pipe weld seam
Shape dress is set, including heat-conducting plate 1 and thermally conductive board mount, and the thermally conductive board mount includes thermally conductive board mount fixed cell 5 and thermally conductive
Board mount movable units 7；The thermally conductive board mount movable units 7 are equipped with flexible adjustment system 6, the heat-conducting plate
It is connected between bracket fixed cell 5 and thermally conductive board mount movable units 7 by flexible adjustment system 6；The heat-conducting plate 1 is set
In on thermally conductive board mount fixed cell 5, the both sides of the edge of the heat-conducting plate 1 and the bottom surface of thermally conductive board mount fixed cell 5 have
Spacing can effectively radiate in the welding process.
The upper surface of the heat-conducting plate 1 is equipped with heat-conducting plate groove 2, keeps steel duct weld seam strong by heat-conducting plate groove 2
Type is made.
Above-mentioned heat-conducting plate groove 2 can be processed into not according to technical requirements such as different thickness of steel pipe, caliber, carrying pressure
Same size.
Above-mentioned thermally conductive board mount can be selected the metals such as carbon steel, stainless steel and be made.
Above-mentioned thermally conductive board mount fixed cell 5 includes bottom plate 10, baffle I8, baffle II11 and pulling plate 9, the bottom plate
10 one end is equipped with baffle I8, and the other end of the bottom plate 10 is equipped with baffle II11, and the side of the baffle II11 is equipped with
Pulling plate 9.The effect of thermally conductive board mount fixed cell 5 is fixed heat-conducting plate 1, by the blocking in multiple faces to guarantee heat-conducting plate the last 1
Moulding section processed is contacted with inside weld always；Pulling plate 9 is used for the position of regulating device and weld seam, is drawn after welding by pulling
Device is pulled out steel pipe by plate 9.The pulling plate 9 can also use the replacement of the structures such as pull rod, handle, pull ring.
Above-mentioned bottom plate 10 is door type structure, and the baffle I8, baffle II11 and bottom plate 10 form semi-cylindrical space.
The section of above-mentioned heat-conducting plate 1 is that arc-shaped, described heat-conducting plate 1 is set in semi-cylindrical space；Heat-conducting plate 1 can
It is made of high-thermal conductive metals such as copper, silver.
The side of above-mentioned heat-conducting plate 1 is equipped with coolant liquid circulation nozzle 3 and protection gas gas circuit nozzle 4, can be according to practical need
It chooses whether using coolant liquid cooling or gas shield.
Above-mentioned thermally conductive board mount movable units 7 are half cylindrical structure, the thermally conductive board mount movable units 7
Upper surface be door type structure, the inside of the thermally conductive board mount movable units 7 is semi-cylindrical cavity.Thermally conductive board mount
Movable units 7 adapt to different calibers by included flexible adjustment system 6.
The two sides of above-mentioned thermally conductive board mount movable units 7 are equipped with groove, can effectively radiate in the welding process.
Above-mentioned flexible adjustment system 6 passes through the upper surface of thermally conductive board mount movable units 7 and is fixed in groove.Institute
The flexible adjustment system 6 stated is set about the central symmetry of thermally conductive board mount fixed cell 5 and thermally conductive board mount movable units 7
It sets.The flexible adjustment system can be the structure of spring or other realization Telescopics, be determined according to actual requirement thermally conductive
The number of spring between board mount fixed cell 5 and thermally conductive board mount movable units 7, is not limited to shown in Fig. 16.It is logical
Crossing the flexible of spring moves up and down thermally conductive board mount movable units realization to adapt to the steel pipe of different tube diameters.
In another embodiment of the invention, above-mentioned thermally conductive board mount fixed cell 5 includes bottom plate 10, baffle I8, gear
Plate II11, pulling plate 9 and cover board, one end of the bottom plate 10 are equipped with baffle I8, and the other end of the bottom plate 10 is equipped with baffle
The side of II11, the baffle II11 are equipped with pulling plate 9, and the cover board is set between baffle I8 and baffle II11, described
The section of cover board be it is arc-shaped, be used to support heat-conducting plate 1；The heat-conducting plate 1 is set to the top of cover board.
In another embodiment of the invention, shaping process in a kind of welded still pipe weld seam is provided, with 50 × 1.5mm of Φ
The example that is produced as of 304 Austenitic stainless steel pipes illustrates:
(1) apparatus for shaping in the welded still pipe weld seam of appropriate size is chosen, it is desirable that heat-conducting plate 1 is most in a free state for device
High point and thermally conductive 7 perigee distance of board mount movable units are greater than 47mm (pipe diameter), are compressed to minimum point and are less than steel
Bore；
(2) connection coolant liquid or gas shield are chosen whether, pipeline is connected；
(3) apparatus for shaping in welded still pipe weld seam is put into steel pipe inner wall, steel duct, 9 direction of pulling plate is pushed into after compression
The outside of steel pipe, it is desirable that the starting point of heat-conducting plate groove 2 is located at molten bath end above apparatus for shaping in welded still pipe weld seam；
(4) apparatus for shaping makes the center line of heat-conducting plate groove 7 and internal weld seams center line position in rotating welding steel pipe seam
In same plane；
(5) thermally conductive board mount fixed cell 5 (different fixed forms can be used according to on-site actual situations) is fixed；
(6) start to weld after installing.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. apparatus for shaping in a kind of welded still pipe weld seam, which is characterized in that including heat-conducting plate and thermally conductive board mount, described is thermally conductive
Board mount includes thermally conductive board mount fixed cell and thermally conductive board mount movable units, the thermally conductive board mount movable units
It is equipped with flexible adjustment system, passes through elasticity between the thermally conductive board mount fixed cell and thermally conductive board mount movable units
Regulating system connection；The heat-conducting plate be set to thermally conductive board mount fixed cell on, the both sides of the edge of the heat-conducting plate with lead
There is spacing in the bottom surface of hot plate bracket fixed cell, and the upper surface of the heat-conducting plate is equipped with heat-conducting plate groove；
The thermally conductive board mount fixed cell includes bottom plate, baffle I, baffle II and pulling plate, and one end of the bottom plate is equipped with
Baffle I, the other end of the bottom plate are equipped with baffle II, and the side of the baffle II is equipped with pulling plate；
The bottom plate is door type structure, and the baffle I, baffle II and bottom plate form semi-cylindrical space；
The section of the heat-conducting plate is that arc-shaped, described heat-conducting plate is set in semi-cylindrical space.
2. apparatus for shaping in a kind of welded still pipe weld seam according to claim 1, which is characterized in that the heat-conducting plate
Side is equipped with coolant liquid circulation nozzle and protection gas gas circuit nozzle.
3. apparatus for shaping in a kind of welded still pipe weld seam according to claim 1, which is characterized in that the heat-conducting plate branch
Frame movable units are half cylindrical structure, and the upper surface of the thermally conductive board mount movable units is door type structure, described
Thermally conductive board mount movable units inside be semi-cylindrical cavity.
4. apparatus for shaping in a kind of welded still pipe weld seam according to claim 3, which is characterized in that the heat-conducting plate branch
The two sides of frame movable units are equipped with groove.
5. apparatus for shaping in a kind of welded still pipe weld seam according to claim 4, which is characterized in that the flexible adjustment
System includes the spring that several groups are arranged in pairs, and the spring one end is fixed on the lower part of bottom plate, the spring it is another
End is fixed in groove.
6. according to claim 1 in a kind of -5 any welded still pipe weld seams apparatus for shaping shaping process, feature exists
In, comprising the following steps:
Step 1 selection and apparatus for shaping in the matched welded still pipe weld seam of steel pipe sizes；
Coolant liquid is recycled nozzle and protection gas gas circuit nozzle and connect respectively with coolant duct, protection feed channel by step 2；
Apparatus for shaping in welded still pipe weld seam is put into steel pipe inner wall by step 3, is pushed into steel duct after compression, makes heat-conducting plate groove
Starting point be located at molten bath end；
Apparatus for shaping is located at the center line of heat-conducting plate groove and internal weld seams center line same in step 4 rotating welding steel pipe seam
One plane；
Step 5 starts to weld after installing.
7. the shaping process of apparatus for shaping in a kind of welded still pipe weld seam according to claim 6, which is characterized in that described
Step 1 in the matched requirement of steel pipe sizes are as follows: heat-conducting plate highest point and thermally conductive board mount are removable single in a free state
The distance between first minimum point is greater than pipe diameter, and heat-conducting plate highest point and thermally conductive board mount movable units are most under compressive state
The distance between low spot is less than pipe diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253488.2A CN106903466B (en) | 2017-04-18 | 2017-04-18 | Apparatus for shaping and technique in a kind of welded still pipe weld seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253488.2A CN106903466B (en) | 2017-04-18 | 2017-04-18 | Apparatus for shaping and technique in a kind of welded still pipe weld seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106903466A CN106903466A (en) | 2017-06-30 |
| CN106903466B true CN106903466B (en) | 2019-03-08 |
Family
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| CN201710253488.2A Active CN106903466B (en) | 2017-04-18 | 2017-04-18 | Apparatus for shaping and technique in a kind of welded still pipe weld seam |
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| CN (1) | CN106903466B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515534B (en) * | 2020-04-08 | 2021-12-21 | 哈尔滨汽轮机厂有限责任公司 | Manufacturing method and supporting tool for hula seal of gas turbine nozzle |
| CN114851003B (en) * | 2022-05-06 | 2024-06-11 | 马鞍山市华科实业有限公司 | Welding line removing and shaping equipment for steel pipe machining |
| CN116329799B (en) * | 2023-06-01 | 2023-08-08 | 武汉海德龙仪表科技有限公司 | Welding device and method for manufacturing and processing liquid level meter |
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|---|---|---|---|---|
| US4682724A (en) * | 1986-03-12 | 1987-07-28 | Helmut Hahn | Welding apparatus |
| CN203109412U (en) * | 2013-01-29 | 2013-08-07 | 广东禅涛钢结构有限公司 | Steel tube longitudinal weld seam welding device |
| CN104128694A (en) * | 2014-07-24 | 2014-11-05 | 江门市新会区同达化工机械制造有限公司 | Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same |
| CN104339120A (en) * | 2014-10-31 | 2015-02-11 | 茂名重力石化机械制造有限公司 | Self-tightened type aligner for aligning shock-cooling heat exchanger tube |
| CN105364262A (en) * | 2015-11-25 | 2016-03-02 | 中国石油天然气集团公司 | Welding device and copper liner |
| CN206614167U (en) * | 2017-04-18 | 2017-11-07 | 山东朝日不锈钢有限公司 | Apparatus for shaping in a kind of welded still pipe weld seam |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5469544A (en) * | 1977-11-15 | 1979-06-04 | Mitsubishi Heavy Ind Ltd | Backing apparatus |
| JPS59209480A (en) * | 1984-04-05 | 1984-11-28 | Kawasaki Heavy Ind Ltd | Welding device for cylindrical body |
-
2017
- 2017-04-18 CN CN201710253488.2A patent/CN106903466B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4682724A (en) * | 1986-03-12 | 1987-07-28 | Helmut Hahn | Welding apparatus |
| EP0236941B1 (en) * | 1986-03-12 | 1991-10-02 | Helmut Hahn | Welding device for butting tube ends |
| CN203109412U (en) * | 2013-01-29 | 2013-08-07 | 广东禅涛钢结构有限公司 | Steel tube longitudinal weld seam welding device |
| CN104128694A (en) * | 2014-07-24 | 2014-11-05 | 江门市新会区同达化工机械制造有限公司 | Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same |
| CN104339120A (en) * | 2014-10-31 | 2015-02-11 | 茂名重力石化机械制造有限公司 | Self-tightened type aligner for aligning shock-cooling heat exchanger tube |
| CN105364262A (en) * | 2015-11-25 | 2016-03-02 | 中国石油天然气集团公司 | Welding device and copper liner |
| CN206614167U (en) * | 2017-04-18 | 2017-11-07 | 山东朝日不锈钢有限公司 | Apparatus for shaping in a kind of welded still pipe weld seam |
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| Publication number | Publication date |
|---|---|
| CN106903466A (en) | 2017-06-30 |
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Denomination of invention: A kind of welding pipe weld internal shaping device and process Effective date of registration: 20210204 Granted publication date: 20190308 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG ASAHI STAINLESS STEEL Co.,Ltd. Registration number: Y2021980000955 |
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Date of cancellation: 20221009 Granted publication date: 20190308 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG ASAHI STAINLESS STEEL Co.,Ltd. Registration number: Y2021980000955 |
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Denomination of invention: An internal shaping device and process for welded steel pipe weld Effective date of registration: 20221019 Granted publication date: 20190308 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG ASAHI STAINLESS STEEL Co.,Ltd. Registration number: Y2022980018862 |
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Date of cancellation: 20231117 Granted publication date: 20190308 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG ASAHI STAINLESS STEEL Co.,Ltd. Registration number: Y2022980018862 |