CN104889530B - Liner structure for abutting steel pipe and welding method - Google Patents
Liner structure for abutting steel pipe and welding method Download PDFInfo
- Publication number
- CN104889530B CN104889530B CN201510351438.9A CN201510351438A CN104889530B CN 104889530 B CN104889530 B CN 104889530B CN 201510351438 A CN201510351438 A CN 201510351438A CN 104889530 B CN104889530 B CN 104889530B
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- Prior art keywords
- steel pipe
- terrace
- edge
- screw
- welding
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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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
- B23K9/0358—Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being a ring or sleeve
-
- 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
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Abstract
The invention provides a liner structure for an abutting steel pipe and a welding method. The liner structure comprises a steel spring ring, a ceramic liner and a screw, wherein a plurality of connecting holes are uniformly formed at intervals in the circumferential wall of the steel spring ring; the ceramic liner comprises a plurality of prismatic tables; screw holes are formed in the top surfaces of the prismatic tables; the prismatic tables are that the screw passes through the connecting holes and is screwed into the screw hole to achieve the fixed connection with the steel spring ring; a gap groove is formed between two adjacent prismatic tables; the bottom ends of the two adjacent prismatic tables are propped to each other, and the top ends of the two adjacent prismatic tables are arranged at intervals. The liner structure is simple in structure and recyclable; in addition, the welding method of the abutting steel pipe is simple and convenient to operate; the requirement of full penetration welding quality of double-surface welding and double-surface forming in abutting of the steel pipe can be met.
Description
Technical field
The present invention relates to welding type is the technical field of pipe butt weld in power industry steel tower or steel construction industry, tool
Body is related to a kind of gasket construction for docking steel pipe, further relates to a kind of welding method of docking steel pipe, it is adaptable to which steel pipe is docked
Single face welding and double face shaping welding procedure with liner welding.
Background technology
Require for component butt weld is relevant, by GB50017-2003《Code for design of steel structures》Middle regulation " need not
In calculating the component of fatigue, all to require that the butt weld strong with mother metal etc. be penetrated, its credit rating should not be low when tension
In two grades, two grades are preferably when pressurized " clause regulation.Therefore, according to GB50661-2011《Welding for steel structure specification》In carry
For various complete penetraction and fusion in welding groove types and size and method, wherein taking the welding procedure of the single face welding and double face shaping of reverse side liner
There is provided many, but general reverse side liner is using steel sleeve or the type of ceramic substrate.If steel pipe butting member is in welding life
During product, when using steel sleeve, it is necessary to be furnished with quality of parent material identical ring steel ring as back side liner, and ring steel
Circle making increased the round as a ball operation of lath, and rolled steel dosage is increased again, and steel sleeve is after the completion of welding, it is impossible to which dismounting will forever
Being attached to long on component affects outward appearance；When using ceramic substrate as back side liner, because the aluminium foil glue of ceramic substrate is due to welding
Viscosity is lost after being heated to be caused to reuse, so as to increased manufacturing cost.Groped by practice, invented one kind can be again
The gasket construction for using again and welding method.
The content of the invention
In view of the above, it is an object of the invention to provide a kind of reusable liner for docking steel pipe is tied
Structure, additionally provides a kind of welding method of docking steel pipe, and gasket construction is simple, and welding method is easy to operate, can meet steel pipe pair
The complete penetraction and fusion in welding welding quality of the single face welding and double face shaping for connecing is required.
The purpose of the present invention can be realized by following technical proposal：A kind of gasket construction for docking steel pipe, including bullet
Spring steel ring, ceramic substrate and screw, evenly spaced offer some connecting holes, the pottery on the perisporium of steel rim of spring
Ceramic liner pad includes some terrace with edges, and the top surface of terrace with edge offers screw, and terrace with edge is by the way that the screw is through connecting hole and is spirally connected
It is affixed with the steel rim of spring to screw, there is clearance groove between adjacent two terrace with edges, and the bottom of adjacent two terrace with edge mutually sticks to, and pushes up
End is separately.
Further, the steel rim of spring bends to circle and forms for the spring lath of vertical bar type, and the spring lath is first-class
The connecting hole is offered to spacing, some terrace with edge arrangements are fixed on the spring lath.
Further, interior concaved circular cambered surface is formed with the terrace with edge bottom surface, to cause interior concave arc when steel pipe is docked
The centrage in face overlaps with steel pipe butt-joint clearance centrage.
Further, the top surface of the terrace with edge is formed with locating slot, to snap-springs lath.
Further, the terrace with edge top surface is equipped with compound adhesive, for strengthening the fixation screw.
It is a kind of using described gasket construction to dock the welding method of steel pipe, comprise the following steps,
Spring lath is provided, equidistant ground auger is formed with connecting hole in the plate face of spring lath；
Terrace with edge is provided, the bottom surface of terrace with edge is machined with interior concaved circular cambered surface, and the top surface of terrace with edge is machined with screw；
Screw is provided, screw is through connecting hole and is screw-coupled in screw, so as to some terrace with edges are solidly connected to into spring
On lath；
Then latch plate bar is involved in the pipe of two steel pipes at docking port, the bottom surface of terrace with edge is set off with steel pipe inner wall and fitted,
And adjust the centrage of the interior concaved circular cambered surface of terrace with edge to overlap with steel pipe butt-joint clearance centrage.
Further, first in terrace with edge end face center injection compound adhesive before connecting screw nail, then spring lath is assembled.
Further, the banjo fixing butt jointing for docking steel pipe is processed groove using machining or method for hot cutting, and groove adds
It is 30 ° that work physical dimension is respectively bevel angle, 1.0～1.5mm of root face, and guarantee steel pipe end surface inclination tolerance P≤
1.5mm。
Further, Butt Assembling group pair and tack welding are carried out to two steel pipes by grouping machine, between steel pipe Butt Assembling
Gap ensures 2.0～2.5mm, unfitness of butt joint tolerance S≤1.5mm during assembling, and after assembling is qualified tack welding, the weldering of tack welding are carried out
Silk welding in groove, solder joint length is 20～30mm, tack welding 3～4mm of height, its spacing no more than 400mm, and much
At 3 points.
The invention has the beneficial effects as follows, the present invention adopts described gasket construction, and its simple structure is reusable, and
And the welding method of docking steel pipe is easy to operate, the complete penetraction and fusion in welding welding quality of the single face welding and double face shaping of steel pipe docking can be met.
Description of the drawings
Fig. 1 is the stereoscopic-state schematic diagram when steel pipe of present pre-ferred embodiments two is docked；
Fig. 2 is the sectional view of commissure when two steel pipes shown in Fig. 1 are docked；
Fig. 3 is the commissure close-up schematic view shown in Fig. 2；
Fig. 4 is the structural representation for docking the steel rim of spring of the gasket construction of steel pipe shown in Fig. 1；
Fig. 5 is a visual angle schematic diagram of the terrace with edge of gasket construction；
Fig. 6 is another visual angle schematic diagram of the terrace with edge of gasket construction.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole, not
In the case of conflict, the feature in embodiment and embodiment in the application can be mutually combined, and below with reference to the accompanying drawings and tie
Close embodiment to describe the present invention in detail.
Fig. 1 is referred to, is shown after the para-position of two steel pipe 10 for the view of welding, the commissure of two steel pipe 10 is arranged
There is a gasket construction 20, in order to the connection end para-position to two steel pipes 10, and then welded.
Fig. 2, Fig. 3 and Fig. 4 are referred to, gasket construction 20 includes steel rim of spring 21, ceramic substrate 22 and screw 23.
Steel rim of spring 21 bends to circle and forms for vertical bar type spring lath, and junction lath two ends fit along radial direction to
Center is extended with certain length.Some connecting holes 211 are evenly spaced offered on the perisporium of steel rim of spring 21, for matching somebody with somebody
Close screw 23 ceramic substrate 22 is solidly connected on steel rim of spring 21.It is in circular ring structure that ceramic substrate 22 is overall, is some independences
Terrace with edge 221 be arranged in ring-type and formed, and there is clearance groove 222 separately between adjacent terrace with edge 221 so that adjacent two terrace with edge
221 bottoms mutually stick to, and top is separately.In the present embodiment terrace with edge 221 be tetragon terrace with edge, the groove triangular in shape of clearance groove 222.Often
The bed-plate dimension of one terrace with edge 221 is larger, as the outer peripheral face of ceramic substrate 22, to the inner peripheral surface for coordinating butt-welded tube 10.Please join
Fig. 5 is read, terrace with edge 221 is formed with interior concaved circular cambered surface 2111 on bottom surface, to para-position and fill solder in welding.Terrace with edge 221 is pushed up
Face size is less, as the inner peripheral surface of ceramic substrate 22, to the steel rim of spring 21 that is connected.The end face center of terrace with edge 221 is opened up
There is screw, to coordinate screw 23 that terrace with edge 221 is solidly connected on steel rim of spring 21.Fig. 6 is referred to, the top surface of terrace with edge 221 is formed
There is locating slot 2212, the width of locating slot is suitable with the width of spring lath, so that terrace with edge 221 is being connected to spring lath
When, spring lath is held in the locating slot of terrace with edge 221, so as to preferably position to spring lath.Additionally, ceramic substrate 22 is also
Can be considered that the overall ring body in annulus is separated into some independences by evenly spaced opening up some clearance grooves 222 on inwall
Terrace with edge 221 make.
In the present embodiment, gasket construction 20 is produced as follows, and steel rim of spring 21 is in latch plate bar state before not bending,
Spring lath makes length according to the diameter of butt-welded tube, and drills in its plate face with so that ceramic substrate 22 connects
Required connecting hole 211；Terrace with edge 221 is provided, the periphery facial contour length and width size of terrace with edge 221 is respectively 30 × 30mm, inner peripheral surface
Length and width size is respectively 30 × 22mm, gross thickness 25mm, the arc of the interior concaved circular cambered surface 2111 of outer peripheral face is wide, depth be 14 ×
1.5mm, the screw at the center of terrace with edge 221 drills the aperture of 2.5 × 16mm of ∮, so that screw 23 is connected；Spring lath and rib
Platform 221 is connected by the screw 23 of M3 × 15mm specifications, and between guaranteeing between the adjacent terrace with edge 221 on spring lath
Away from 0.2mm for 0.15-0.25mm, is preferably selected, the effect that senior general does not have sealing run shaping is crossed in gap, too small to cause
The mutual interference of terrace with edge 221 is hit and is touched.To guarantee to be connected firmly, can first in the end face center of terrace with edge 221 before connecting screw nail 23
Injection compound adhesive, then spring lath is assembled, screw is then screwed into, compound adhesive is firmly durable after solidifying with screw, stable
It is reliable.Before steel pipe docking welding, first terrace with edge 221 is solidly connected on spring lath by screw 23, then by latch plate silver lap
In inlet pipe at docking port, using the flexible tension force of latch plate so that terrace with edge 221 sets off with steel pipe inner wall fits, and adjusts rib
The centrage of the interior concaved circular cambered surface 2111 of platform 221 overlaps with steel pipe butt-joint clearance centrage, full to reach sealing run molding,
The neat appearance forming of soldering.
During welding, the welding procedure of the main single face welding and double face shaping using gas shielded arc welding soldering low alloy structural steel,
It is mainly included the following steps that：
Step one, groove, groove are processed by the banjo fixing butt jointing of docking steel pipe using methods such as machining or thermal cuttings
It is 30 ° that processing physical dimension is respectively bevel angle, 1.0～1.5mm of root face, and guarantee steel pipe end surface inclination tolerance P≤
1.5mm；
Step 2, with polishing machine oxide skin, corrosion, the oil in the range of steel pipe groove face and end surfaces externally and internally 20mm is removed
Fat and other dirts, to exposing metallic luster；
Two steel pipes are carried out Butt Assembling group pair and tack welding, steel pipe Butt Assembling gap by step 3 by grouping machine
Ensure 2.0～2.5mm, misalignment, unfitness of butt joint tolerance S≤1.5mm should be avoided during assembling.Tack welding is carried out after assembling is qualified,
The welding in groove of the welding wire of tack welding, solder joint length be 20～30mm, tack welding height 3～4mm, its spacing no more than
400mm, and no less than 3 points, tack welding should ensure that through welding and zero defect, check whether tack welding quality is qualified after the completion of welding,
Tack welding two ends are polishing to into sloped transition after qualified.
Step 4, in latch plate silver lap inlet pipe at docking port, and adjusts interior concaved circular cambered surface center and the steel pipe pair of terrace with edge
Gap center coincidence is connect, as inner lining of steel pipe pad.Welding condition such as following table,
Welding condition table
Note：Welding wire model is specifically matched with mother metal, and type is solid core welding wire used for gas shield welding.
Welding operational approach is as follows,
1), steel pipe is placed on turning rolls, welding machine is adjusted by backing welding welding condition and turning rolls is turned
Dynamic speed, the speed that steel pipe is rotated is exactly speed of welding, and steel pipe tack weld is gone to into 1 o'clock position carries out the backing welding starting the arc
Point, using uphill welding welding mode, is continuously finished whole circle prime coat welding.
2), slag, splashing of backing run etc. are removed with polishing machine affects the defect of normal weld, and on reconditioning welding bead
The weld metal of local crowning.
3), packed layer, adjusts its technological parameter, and by bottoming soldering method filler pass is welded.Note welding gun teeter
Amplitude should be slightly larger, and suitably stops in groove both sides, it is ensured that the fusion of welding bead both sides is good, and welding bead surfacing is slightly recessed.Filling
Thickness degree should control last layer of filler pass height, make less than 2～3mm of mother metal, and must not melt groove seamed edge.
4), capping layer, adjusts its technological parameter, and welding gun teeter amplitude should be bigger than during packed layer, and in both sides slightly
Stop, make molten bath exceed groove 0.5～1.5mm of seamed edge, it is ensured that both sides fusion is good；The speed for rotating steel pipe is slow, keeps water
Prosposition puts welding, makes welding bead good looking appearance.
By the way that using above-mentioned gasket construction, its simple structure is reusable, and dock the welding method operation of steel pipe
Simplicity, can meet the complete penetraction and fusion in welding welding quality of the single face welding and double face shaping of steel pipe docking.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (9)
1. a kind of gasket construction for docking steel pipe, it is characterised in that：Including steel rim of spring (21), ceramic substrate (22) and
Screw (23), evenly spaced offers some connecting holes (211), the ceramic substrate on the perisporium of steel rim of spring (21)
(22) including some terrace with edges (221), the top surface of terrace with edge (221) offers screw, and terrace with edge (221) is worn by the screw (23)
Cross connecting hole (211) and be screw-coupled to affixed with the steel rim of spring (21) in screw, there is gap between adjacent two terrace with edge (221)
Groove (222), and the bottom of adjacent two terrace with edge (221) mutually sticks to, top is separately.
2. the gasket construction for docking steel pipe according to claim 1, it is characterised in that：The steel rim of spring (21) is
The spring lath of vertical bar type bends to circle and forms, and offers the connecting hole (211) to the first-class spacing of the spring lath, some
Terrace with edge (221) arrangement is fixed on the spring lath.
3. the gasket construction for docking steel pipe according to claim 1, it is characterised in that：Terrace with edge (221) bottom surface
On be formed with interior concaved circular cambered surface (2111), to cause the centrage of interior concaved circular cambered surface (2111) and steel pipe pair when steel pipe is docked
Connect the coincidence of gap center line.
4. the gasket construction for docking steel pipe according to claim 2, it is characterised in that：The top of the terrace with edge (221)
Face is formed with locating slot (2212), to snap-springs lath.
5. the gasket construction for docking steel pipe according to claim 2, it is characterised in that：Terrace with edge (221) top surface
Compound adhesive is equipped with, for strengthening the fixation screw (23).
6. to dock the welding method of steel pipe, its feature exists the gasket construction described in a kind of any one of application claim 1 to 5
In：Comprise the following steps,
Spring lath is provided, equidistant ground auger is formed with connecting hole (211) in the plate face of spring lath；
Terrace with edge (221) is provided, the bottom surface of terrace with edge (221) is machined with interior concaved circular cambered surface (2111), and the top surface of terrace with edge (221) is machined with
Screw；
Screw (23) is provided, screw (23) is through connecting hole (211) and is screw-coupled in screw, so as to by some terrace with edges
(221) it is solidly connected on spring lath；
Then latch plate bar is involved in the pipe of two steel pipes at docking port, the bottom surface of terrace with edge (221) is set off with steel pipe inner wall and fitted,
And adjust the centrage of the interior concaved circular cambered surface (2111) of terrace with edge (221) to overlap with steel pipe butt-joint clearance centrage.
7. it is according to claim 6 docking steel pipe welding method, it is characterised in that：First exist before connecting screw nail (23)
Terrace with edge (221) end face center injects compound adhesive, then assembles spring lath.
8. it is according to claim 6 docking steel pipe welding method, it is characterised in that：The banjo fixing butt jointing of docking steel pipe is adopted
Machining or method for hot cutting are processed groove, and it is 30 ° that retaining wall on slope physical dimension is respectively bevel angle, and root face 1.0～
1.5mm, and ensure that steel pipe end surface inclines tolerance P≤1.5mm.
9. it is according to claim 6 docking steel pipe welding method, it is characterised in that：Two steel pipes are entered by grouping machine
Row Butt Assembling group pair and tack welding, steel pipe Butt Assembling gap ensures 2.0～2.5mm, unfitness of butt joint tolerance S during assembling≤
1.5mm, assemble it is qualified after carry out tack welding, welding wire welding in groove of tack welding, solder joint length is 20～30mm, tack welding
Highly 3～4mm, its spacing no more than 400mm, and no less than 3 points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351438.9A CN104889530B (en) | 2015-06-23 | 2015-06-23 | Liner structure for abutting steel pipe and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351438.9A CN104889530B (en) | 2015-06-23 | 2015-06-23 | Liner structure for abutting steel pipe and welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104889530A CN104889530A (en) | 2015-09-09 |
| CN104889530B true CN104889530B (en) | 2017-05-03 |
Family
ID=54022718
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510351438.9A Active CN104889530B (en) | 2015-06-23 | 2015-06-23 | Liner structure for abutting steel pipe and welding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216351A (en) * | 2019-06-25 | 2019-09-10 | 鹤壁天宏钢结构有限公司 | A kind of CO2Ceramic substrate welder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335966A (en) * | 2017-09-06 | 2017-11-10 | 中国五冶集团有限公司 | A kind of method that steel sleeve is set in steel pipe |
| CN110732747A (en) * | 2019-09-16 | 2020-01-31 | 广州文冲船厂有限责任公司 | Welding method |
| CN112518077B (en) * | 2020-10-29 | 2022-03-01 | 烟台大学 | Online compensation type material combining device |
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| US3437251A (en) * | 1967-02-21 | 1969-04-08 | Arcos Corp | Segmented weld backing bar |
| US3940048A (en) * | 1975-01-21 | 1976-02-24 | Minnesota Mining And Manufacturing Company | Device for backing butt-welds between tubes |
| US4285458A (en) * | 1979-09-27 | 1981-08-25 | Midcon Pipeline Equipment Co. | Welding backup shoe apparatus |
| FR2542234A1 (en) * | 1983-03-10 | 1984-09-14 | Ballan De Ballensee Pierre | Method for mounting and fixing a weld-pool support during the electrothermal welding of metals |
| FR2572974B1 (en) * | 1984-11-15 | 1987-01-23 | Ballan De Ballensee Pierre | DEVICE FOR SUPPORTING WELDING DURING THE END-TO-END ASSEMBLY OF METAL TUBES BY SINGLE-SIDE ELECTRIC ARC WELDING. |
| FR2660586B1 (en) * | 1990-04-05 | 1993-05-28 | Ballan De Ballensee Pierre | AUTOMATIC DEVICES FOR SUPPORTING WELDINGS DURING THE END-TO-END ASSEMBLY OF METAL PLANE PANELS BY MONOFACIAL ELECTRIC ARC WELDING. |
| CN201257579Y (en) * | 2008-08-22 | 2009-06-17 | 北京石油化工学院 | Telescopic pipeline internal lining ring cooling block |
| CN203245532U (en) * | 2013-05-22 | 2013-10-23 | 中国化学工程第三建设有限公司 | Metal liner device for pipeline welding |
| CN204747719U (en) * | 2015-06-23 | 2015-11-11 | 广州增立钢管结构股份有限公司 | A liner structure for docking steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110216351A (en) * | 2019-06-25 | 2019-09-10 | 鹤壁天宏钢结构有限公司 | A kind of CO2Ceramic substrate welder |
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| CN104889530A (en) | 2015-09-09 |
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