CN203594892U - Seam edge-overlapping type steel welded pipe - Google Patents
Seam edge-overlapping type steel welded pipe Download PDFInfo
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- CN203594892U CN203594892U CN201320732841.2U CN201320732841U CN203594892U CN 203594892 U CN203594892 U CN 203594892U CN 201320732841 U CN201320732841 U CN 201320732841U CN 203594892 U CN203594892 U CN 203594892U
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Abstract
Provided is a seam edge-overlapping type steel welded pipe. An overlapping face (5) is arranged at a seam position of a pipe wall (1), the length of an intersection line on the cross section, perpendicular to the axis of the steel pipe, of the overlapping face (5) is two times larger than the thickness of the pipe wall (1), namely, the intersection line of the overlapping face (5) and an outer wall (2) and the intersection line of the overlapping face (5) and an inner wall (3) are not located on an identical plane with that of the axis of the steel pipe, and the intersection angel of the outer wall of an upper wing (4) and the overlapping face (5) and the intersection angle of the outer wall of a lower wing (6) and the overlapping face (5) are both smaller than or equal to 90 degrees. Through the fact that an initial seam structure of the overlapping of butt-joint edges is formed, the requirement for precision of front end strip steel blanking is lowered properly, and meanwhile production efficiency and structural strength of finished products are improved. Hidden trouble influencing production schedules is reduced, working efficiency is improved, the quality of a welding seam of the welded pipe is improved, the strength of the welding seam is improved, loss of raw materials needed by the welded pipe is small, the requirements for energy conservation and environment protection are met, energy conservation and safety in equipment operation are achieved, production stability and safety are ensured, the defect rate is reduced, and the yield is improved greatly.
Description
Technical field
The utility model relates to welded steel pipe product or the folded limit of manufacturing equipment device, especially seam formula steel welded tube.
Background technique
Welded steel pipe also claims welded tube, is after cans, to weld the steel pipe made from steel plate or with steel.Welded steel pipe production technology is simple, and manufacturing efficiency is high, and description is many, and equipment investment is few, but common intensity is lower than seamless steel pipe.Since the thirties in 20th century, along with developing rapidly and the progress of welding and inspection technology of quality strip steel rolling production, weldquality constantly promotes, and the description of welded steel pipe is increasing, and has replaced seamless steel pipe in increasing field.Welded steel pipe is divided into ERW and spiral welded pipe by the form of weld seam.Classify by production method: technique classification-electric arc welded tube, resistance weld pipe, high frequency, low frequency gas welded pipe, and the continuous furnace welding of tube.The intensity of spiral welded pipe is generally high than ERW, can produce the larger welded tube of caliber with narrower blank, can also produce the different welded tube of caliber with the blank of same width, still compared with the straight-seam pipes of equal length, fusion length increases 30-100%, and speed of production is lower.
ERW production technology is simple, and manufacturing efficiency is high, and cost is low, and development is very fast.Wherein, the welded tube that diameter is large or thicker, generally directly makes with steel billet material, and little welded tube thin-walled welding pipe only need to directly weld just passable by steel band.Then through simple polishing, wire drawing.Therefore, more small-bore welded tube mostly adopts straight weld, and heavy caliber welded tube adopts spiral welding mostly.
Common welded tube is by required raw material, comprise that steel plate, steel band, roll bending are first cut into suitable width, pass through again cold roll forming, squeezing roll extruding, high frequency welding, finishing, finally be processed into welded tube, the direction of its squeezing roll extruding is that the left and right sides of the edge joint position from raw material bending is pushed toward middle.But because the required raw material width deviation of welded tube is large or edge defectiveness, must cut across separately if raw material width is excessive, producing the steel band edge waste material after cutting across, productivity is lower; If raw material width is too small or edge defectiveness, in the time of extruding welding, affect the quality of welded tube welding seam, the intensity of weld seam is affected.Therefore, must improve current common welded tube because raw material are improper or processing mode when defectiveness, make welded tube can meet or exceed the performance of common welded tube.
Based on conventional steel is rolled to the energy-conservation requirement of products innovation, in common welded tube course of working, need the squeezing roll of a pair of left and right extruding to push raw material, under the off size suitable or defective prerequisite in edge of the required raw material of welded tube, the processing mode such as extruding, welding of welded tube is also constantly improving, is upgrading, in the hope of improving the productivity of welded tube, reduce production and processing cost.
Model utility content
The purpose of this utility model is to provide the folded limit of a kind of seam formula steel welded tube, when appropriateness reduces front end band steel cutting stock precision and requires, enhances productivity and the structural strength of finished product.
The purpose of this utility model will realize by following technical measures: comprise tube wall, outer wall, inwall, upper limb, superposed surfaces and bottom wing; Tube wall has superposed surfaces at seaming position, this superposed surfaces intersection line length on the cross section perpendicular to steel pipe axis is greater than 2 times of pipe thicknesses, be superposed surfaces respectively with outer wall and inwall intersection line and steel pipe axis not at same plane, the outer wall of the outer wall of upper limb angle crossing with superposed surfaces and bottom wing and superposed surfaces intersect angle and are all not more than 90 °.
Especially, this superposed surfaces intersection line on the cross section perpendicular to steel pipe axis is straight line or sigmoid curve.
Especially, the overlap-add region being formed by the upper limb misplacing up and down and bottom wing, the width of overlap-add region is 2---6 millimeters.
Especially, smoothly join respectively at corresponding outer wall and the inwall of superposed surfaces both sides.
Especially, on the cross section perpendicular to steel pipe axis, it is identical with outer wall that upper limb outer rim is circular arc diameter, and it is identical with inwall that bottom wing inner edge is circular arc diameter.
Advantage of the present utility model and effect: the initial seam structure laminating by abutting edge is set, when appropriateness reduces front end band steel cutting stock precision and requires, enhance productivity and the structural strength of finished product.Reduced to affect the hidden danger of manufacturing schedule, working efficiency improves, and welded tube welding seam quality improves, the strength increase of weld seam, the required raw material loss of welded tube is few, meets the requirement of energy-saving and environment friendly, equipment energy saving in running safety, guarantee production stability and safety, defect rate reduces, and productivity improves greatly.Especially adapt to existing equipment component to carry out technical innovation.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation.
Fig. 2 is that while manufacture in the utility model embodiment 1, seam is folded limit initial structure schematic diagram.
Reference character comprises: tube wall 1, outer wall 2, inwall 3, upper limb 4, superposed surfaces 5, bottom wing 6.
Embodiment
The utility model principle is, by coiling abutting edge, square butt joint is improved to stagger to laminate, and forms folded limit structure, when appropriateness reduces front end band steel cutting stock precision and requires, enhances productivity and the structural strength of finished product.
The utility model comprises: tube wall 1, outer wall 2, inwall 3, upper limb 4, superposed surfaces 5 and bottom wing 6.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, tube wall 1 has superposed surfaces 5 at seaming position, this superposed surfaces 5 intersection line length on the cross section perpendicular to steel pipe axis is greater than 2 times of tube wall 1 thickness, be superposed surfaces 5 respectively with outer wall 2 and inwall 3 intersection linees and steel pipe axis not at same plane, the outer wall of the outer wall of upper limb 4 angle crossing with superposed surfaces 5 and bottom wing 6 and superposed surfaces 5 intersect angle and are all not more than 90 °.
In aforementioned, this superposed surfaces 5 intersection line on the cross section perpendicular to steel pipe axis is straight line or sigmoid curve.
In aforementioned, the overlap-add region being formed by the upper limb 4 misplacing up and down and bottom wing 6, the width of overlap-add region is 2---6 millimeters.
In aforementioned, smoothly join respectively at corresponding outer wall 2 and the inwall 3 of superposed surfaces 5 both sides.
In aforementioned, on the cross section perpendicular to steel pipe axis, it is identical with outer wall 2 that upper limb 4 outer rims are circular arc diameter, and it is identical with inwall 3 that bottom wing 6 inner edges are circular arc diameter.
In the utility model, as shown in Figure 2, in the time producing and apply, when after cold roll forming, extruding is welded, when raw material both sides are extruded, the width of overlap-add region is 2---6 millimeters, because the wide meeting of the width of overlap-add region causes after welding, upper and lower squeezing roll cannot flatten laminating region, if but narrow, can there is the inadequate problem of join strength at folded limit place, simultaneously, use a pair of squeezing roll of installing in outside to push in opposite directions outside tube wall 1 substantially horizontal outside, also use two pairs of overlap-add region that the squeezing rolls of extruding successively form the upper limb 4 by misplacing up and down and bottom wing 6 up and down to push, simultaneously at the impurity that is unfavorable for stack welding between two pairs of squeezing rolls that push up and down by the oxide layer between high pressure water injection device removing overlap-add region etc., improve the weldability in the lap seam region being formed by the superposed surfaces 5 of upper limb 4 and bottom wing 6 adjacent positions, simultaneously, guarantee the pure of the smooth and overlap-add region mother metal crystal grain of the surfacing of final products made thereby overlap-add region, improve lap seam welding region intensity.
Claims (5)
1. the folded limit of seam formula steel welded tube, comprises tube wall (1), outer wall (2), inwall (3), upper limb (4), superposed surfaces (5) and bottom wing (6); It is characterized in that, tube wall (1) has superposed surfaces (5) at seaming position, this superposed surfaces (5) intersection line length on the cross section perpendicular to steel pipe axis is greater than 2 times of tube wall (1) thickness, be superposed surfaces (5) respectively with outer wall (2) and inwall (3) intersection line and steel pipe axis not at same plane, the outer wall of the outer wall of upper limb (4) and the crossing angle of superposed surfaces (5) and bottom wing (6) and superposed surfaces (5) intersect angle and are all not more than 90 °.
2. the folded limit of seam as claimed in claim 1 formula steel welded tube, is characterized in that, this superposed surfaces (5) intersection line on the cross section perpendicular to steel pipe axis is straight line or sigmoid curve.
3. the folded limit of seam as claimed in claim 1 formula steel welded tube, is characterized in that, the overlap-add region being formed by the upper limb misplacing up and down (4) and bottom wing (6), and the width of overlap-add region is 2---6 millimeters.
4. the folded limit of seam as claimed in claim 1 formula steel welded tube, is characterized in that, smoothly joins respectively at corresponding outer wall (2) and the inwall (3) of superposed surfaces (5) both sides.
5. the folded limit of seam as claimed in claim 1 formula steel welded tube, it is characterized in that, on the cross section perpendicular to steel pipe axis, it is identical with outer wall (2) that upper limb (4) outer rim is circular arc diameter, and it is identical with inwall (3) that bottom wing (6) inner edge is circular arc diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732841.2U CN203594892U (en) | 2013-11-19 | 2013-11-19 | Seam edge-overlapping type steel welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732841.2U CN203594892U (en) | 2013-11-19 | 2013-11-19 | Seam edge-overlapping type steel welded pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594892U true CN203594892U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320732841.2U Expired - Fee Related CN203594892U (en) | 2013-11-19 | 2013-11-19 | Seam edge-overlapping type steel welded pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN203594892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287010A (en) * | 2016-09-23 | 2017-01-04 | 苏州三体智能科技有限公司 | A kind of riveting type seam steel pipe |
| CN106626537A (en) * | 2017-02-23 | 2017-05-10 | 江苏冰溶管业有限公司 | Double-layer staggered sealing welded pipe |
| CN108644484A (en) * | 2018-05-31 | 2018-10-12 | 上海忱润新材料科技有限公司 | A kind of polytetrafluoroethyltubing tubing of piece welding fabrication |
| CN115464333A (en) * | 2021-12-30 | 2022-12-13 | 武汉市博钛新材料科技有限公司 | TA18 titanium bicycle frame seamless pipe and production process thereof |
-
2013
- 2013-11-19 CN CN201320732841.2U patent/CN203594892U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287010A (en) * | 2016-09-23 | 2017-01-04 | 苏州三体智能科技有限公司 | A kind of riveting type seam steel pipe |
| CN106626537A (en) * | 2017-02-23 | 2017-05-10 | 江苏冰溶管业有限公司 | Double-layer staggered sealing welded pipe |
| CN108644484A (en) * | 2018-05-31 | 2018-10-12 | 上海忱润新材料科技有限公司 | A kind of polytetrafluoroethyltubing tubing of piece welding fabrication |
| CN115464333A (en) * | 2021-12-30 | 2022-12-13 | 武汉市博钛新材料科技有限公司 | TA18 titanium bicycle frame seamless pipe and production process thereof |
| CN115464333B (en) * | 2021-12-30 | 2024-03-22 | 武汉市博钛新材料科技有限公司 | TA18 titanium bicycle frame seamless welded pipe and production process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20191119 |