CN104226749A - U-shaped molding process for manufacturing HFW (High Frequency Welding) welding pipe - Google Patents
U-shaped molding process for manufacturing HFW (High Frequency Welding) welding pipe Download PDFInfo
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- CN104226749A CN104226749A CN201410404742.0A CN201410404742A CN104226749A CN 104226749 A CN104226749 A CN 104226749A CN 201410404742 A CN201410404742 A CN 201410404742A CN 104226749 A CN104226749 A CN 104226749A
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Abstract
The invention discloses a U-shaped molding process for manufacturing an HFW (High Frequency Welding) welding pipe. According to a production process of the HFW welding pipe, a U-shaped molding manner is used for sequentially molding a steel belt by 17 paths of molding devices; roller mould hole pattern adjustment is carried out by using an adjusting device of each molding device according to the requirements on the thickness of the steel belt and the molding deformation amount respectively so that the steel belt is sufficiently deformed and a weldable ideal state is achieved. The process disclosed by the invention is simple and adopts a downhill molding method so that the section of the steel belt has no deformation dead zone and slivering defects of other molding methods are eliminated; the molding accuracy and the molding stability are improved; an empty bending method is adopted to ensure the uniform deformation and the change of a geometric dimensioning of the steel belt is guaranteed; the stress generated by the fact that parts of edges are bent are eliminated and the slivering defects are prevented from being generated in a molding process; a precision molding device designs a double-radius hole pattern and the edge of the steel belt is thickened by 0.2mm so that the mechanical property of a part of a welding line, close to the HFW welding pipe is enhanced, the quality and the service life of the welding pipe are guaranteed, and the welding pipe is suitable for a bad use environment.
Description
Technical field
The present invention relates to the production technology of HFW welded tube, specifically a kind of " U " moulding process for the manufacture of HFW welded tube.
Background technology
Because HFW petroleum casing pipe, petroleum gas delivering pipe, UHV transmission line steel tube tower are comparatively severe by ERW environment for use, higher quality requirement is proposed to HFW welded tube.In application can there is weld seam break accident in HFW welded tube, main cause is commissure bad mechanical property, and cause the basic reason of commissure bad mechanical property to be that Forming Quality is bad, desirable welded condition cannot be provided for welding sequence, therefore moulding process reasonable in design, improves the deformation extent of steel band in shaping machine set and a difficult problem for Forming Quality Shi Ge manufacturer research of technique.
Summary of the invention
For solving the technical barrier of above-mentioned existence, the invention provides a kind of " U " moulding process for the manufacture of HFW welded tube.Adopt this technique, steel band is by " U " molding mode of design, steel band edge is out of shape full and uniform, and adopt " going down the hill " method of forming, increase steel band deformation of bottom, eliminate steel band edge " bulge " defect, improve Forming Quality, overcome the difficult forming caused because the strength of materials is high, bounce-back large, make strip deformation more fully rationally.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of " U " moulding process for the manufacture of HFW welded tube, adopt " U " molding mode that steel band is shaping through 17 passage shaped devices successively, according to the requirement of thickness of strips and shaping and deformation amount, the adjusting device of each shaped device is utilized to carry out roller mold pass adjustment respectively, steel band is fully out of shape, reach the perfect condition that can weld, detailed process is as follows:
1) draw materials device through 1 passage, bending radius is 1184mm, and steel band is introduced lower a time smoothly;
2) bending apparatus in 1 passage, bends in the middle part of steel band, according to different tubulation specifications and wall thickness, and angle of bend 9 ~ 11 °, bending radius 280 ~ 290mm;
3) through 3 passage beaders, steel band edge is bent, edge is tilted, and adopt unique " empty curved " mode, bend in the middle part of steel band simultaneously, angle of bend increases to 21 ~ 23 ° by 9 ~ 11 °, and bending radius increases to 300 ~ 310mm by 280 ~ 290mm, and steel band starts toward " U " font Direction distortion;
4) bending apparatus in 1 passage, make to bend further in the middle part of steel band, angle of bend increases to 39 ~ 40.5 ° by 21-23 °, and bending radius is reduced to 280 ~ 290mm by 300 ~ 310mm;
5) through 3 passage beaders, bend further steel band edge, steel band middle bent angle increases to 56 ~ 58 ° by 39 ~ 40.5 °, and bending radius increases to 400 ~ 410mm by 280 ~ 290mm, and steel band edge is expanded, and now steel band becomes " U " type;
6) become the edger roll shaped device of 130 ° with 3 passages through 2 passage edgetrols, now steel band edge is bending starts toward " C " font Direction distortion;
7) through the precisive shaped device of 3 passages, by two radius passes of design, steel band thickens 0.1mm by the 1st passage precisive shaped back edge, again 0.05mm is thickened by steel band edge after the 2nd passage precisive shaped, by again thickening 0.05mm after the 3rd passage precisive shaped, three passage precisive shaped back edge thicken and reach 0.2mm, make steel band move closer to " O " font, reach the perfect condition of welding.
As preferably, the device of precisive shaped described in step 7) comprises base, lower roll adjustment motor, roll stand, prerotation vane, side roller adjustment motor, top roll adjustment motor, top roll, side roller, lower roll, described roll stand is fixed on base, described roll stand is respectively arranged with top roll, prerotation vane, two side rollers and lower roll, form the open-topped pair of shaping pass of radius, described top roll adjustment motor is connected with top roll, two side roller adjustment motors are connected with two side rollers respectively, described lower roll adjustment motor is connected with lower roll, according to the width of prerotation vane, the shaping pass of the precisive shaped device of three passages is decreasing radius.
Present invention process is simple, equipment adopts 17 composing type devices, suitable die draft is adjusted according to forming requirements, steel band is shaping through 17 passage shaped devices successively, adopt " going down the hill " method of forming, make steel band section without distortion dead band, eliminate the slivering defect of other forming methods, improve shaping Stability and veracity, materials device is drawn comprising 1 passage, the shaped device of 2 passage steel band middle bent, 6 passage steel band edge bend molding apparatus, in 6 passage steel band edge brake forming processes, whole employing sky is curved, the distortion elongation of each passage is less, ensure that homogeneous deformation, ensure that the change of steel band physical dimension, eliminate the stress produced when part edge bends, avoid producing slivering in forming process, for welding sequence provides reliable and stable steel band edge state, then through 3 passage edger roll shaped devices and 2 passage edgetrols, steel band is made to enter 3 passage precisive shaped devices smoothly, by two radius passes of design, steel band is thickened by 3 passage precisive shaped back edge and reaches 0.2mm, thus add the mechanical performance of the shaping nearly commissure of HFW welded tube, improve the safety and stability that it uses, as forming process the most vital before welding operation, ensure that quality and the service life of welded tube, make it more adapt to its severe environment for use.
Accompanying drawing explanation
Fig. 1 is present invention process schematic diagram;
Fig. 2 be the present invention the 1st passage draw materials device structural representation;
Fig. 3 is the middle bending apparatus structural representation of the present invention the 2nd passage;
Fig. 4 be the present invention the 3rd, 4, the beader structural representation of 5 passages;
Fig. 5 is the middle bending apparatus structural representation of the present invention the 6th passage;
Fig. 6 be the present invention the 7th, 8, the beader structural representation of 9 passages;
Fig. 7 is the present invention the 10th, 11 passage edgetrol structural representation;
Fig. 8 be the present invention the 12nd, 13, the edger roll shaped device structural representation of 14 passages.
Fig. 9 be the present invention the 15th, 16, the precisive shaped apparatus structure schematic diagram of 17 passages.
Detailed description of the invention
Describe the present invention below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, should for the manufacture of " U " moulding process of HFW welded tube, adopt " U " molding mode that steel band is shaping through 17 passage shaped devices successively, according to the requirement of thickness of strips and shaping and deformation amount, utilize the adjusting device of each shaped device to carry out roller mold pass adjustment respectively, steel band is fully out of shape, reach the perfect condition that can weld, adopt " going down the hill " method of forming, make steel band section without distortion dead band, improve shaping Stability and veracity.
Be illustrated in figure 2 and draw materials device structural representation, draw materials device frame 2 and be fixed on base 1, according to thickness of strips adjustment cylinder 5, make top roll 4 and lower roll 3 form appropriate clearance, traction steel band moves ahead.
Be illustrated in figure 3 middle bending apparatus structural representation, requirement according to thickness of strips and shaping and deformation amount adjusts drafts by regulating oil cylinder 6 pressure of upper rack, make top roll 7 and lower roll 8 form the pass designed by adjustment motor 9 and make steel band middle bent, described device is fixed on base 10.Fig. 5 and Fig. 3 structure is identical, does not do repeat specification here.
As shown in Figure 4, described beader comprises base 11, chute 13, can be regulated on chute 13 described in frame both sides memorial archway 15 and be provided with adjusting screw, can adjust according to about width of steel band by motor 12.By regulating motor 14 that roll 16 can be made to move up and down, being formed form a groove with roll 17, this device makes the empty bending deformation of steel band in forming process, there is not real contact, effectively alleviates work hardening.Fig. 6 and Fig. 4 structure is identical, does not do repeat specification here.
As shown in Figure 7, described edgetrol comprises base 18, chute 19 adjusts both sides memorial archway 21 by motor 20 and can adjust according to about width of steel band, adjustment motor 22 can make roll 23 move up and down, adjustment motor 24 makes roll 25 move up and down, adjusting device described above makes roll formation form a groove, and reaches treating selvedge object.
As shown in Figure 8, described edger roll shaped device comprises base 26, chute 27, roll 29 can be made to move up and down in frame 30, and roller box 31 can move up and down certain angle, meet the product demand of producing different size by adjustment motor 28.
As shown in Figure 9, described precisive shaped device comprises base 32, lower roll adjustment motor 33, roll stand 34, prerotation vane 35, side roller adjustment motor 36, top roll adjustment motor 37, top roll 38, side roller 39, lower roll 40, described roll stand 34 is fixed on base 32, described roll stand 34 is respectively arranged with top roll 38, prerotation vane 35, two side rollers 39 and lower roll 40, form the open-topped pair of shaping pass of radius, described top roll adjustment motor 37 is connected with top roll 38, two side roller adjustment motors 36 are connected with two side rollers 39 respectively, described lower roll adjustment motor 33 is connected with lower roll 40, according to the width of prerotation vane 35, the shaping pass of the precisive shaped device of three passages is decreasing radius.
Be illustrated in figure 1 process chart of the present invention, before carrying out moulding process, first in order each composing type device is corresponding in turn to pass and arranges, the requirement according to thickness of strips and shaping and deformation amount regulates suitable die draft by adjusting device.
1) through drawing materials device shown in 1 passage Fig. 2, bending radius is 1184mm, and steel band is introduced lower a time smoothly;
2) bending apparatus in shown in 1 passage Fig. 3, bends in the middle part of steel band, according to different tubulation specifications and wall thickness, and angle of bend 9 ~ 11 °, bending radius 280 ~ 290mm;
3) through the beader shown in 3 passage Fig. 4, steel band edge is bent, edge is tilted, and adopt unique " empty curved " mode, bend in the middle part of steel band simultaneously, angle of bend increases to 21 ~ 23 ° by 9 ~ 11 °, and bending radius increases to 300 ~ 310mm by 280 ~ 290mm, and steel band starts toward " U " font Direction distortion;
4) bending apparatus in shown in 1 passage Fig. 5, make to bend further in the middle part of steel band, angle of bend increases to 39 ~ 40.5 ° by 21-23 °, and bending radius is reduced to 280 ~ 290mm by 300 ~ 310mm;
5) through the beader shown in 3 passage Fig. 6, bend further steel band edge, steel band middle bent angle increases to 56 ~ 58 ° by 39 ~ 40.5 °, and bending radius increases to 400 ~ 410mm by 280 ~ 290mm, steel band edge is expanded, and now steel band becomes " U " type;
6) through the edgetrol shown in 2 passage Fig. 7 and the edger roll shaped device becoming 130 ° shown in 3 passage Fig. 8, now steel band edge is bending starts toward " C " font Direction distortion;
7) through 3 passages Fig. 9 shown in precisive shaped device, by two radius passes of design, steel band thickens 0.1mm by the 1st passage precisive shaped back edge, again 0.05mm is thickened by steel band edge after the 2nd passage precisive shaped, by again thickening 0.05mm after the 3rd passage precisive shaped, three passage precisive shaped back edge thicken and reach 0.2mm, make steel band move closer to " O " font, reach the perfect condition of welding.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (2)
1. " U " moulding process for the manufacture of HFW welded tube, it is characterized in that, adopt " U " molding mode that steel band is shaping through 17 passage shaped devices successively, according to the requirement of thickness of strips and shaping and deformation amount, the adjusting device of each shaped device is utilized to carry out roller mold pass adjustment respectively, steel band is fully out of shape, and reach the perfect condition that can weld, detailed process is as follows:
1) draw materials device through 1 passage, bending radius is 1184mm, and steel band is introduced lower a time smoothly;
2) bending apparatus in 1 passage, bends in the middle part of steel band, according to different tubulation specifications and wall thickness, and angle of bend 9 ~ 11 °, bending radius 280 ~ 290mm;
3) through 3 road beaders, steel band edge is bent, edge is tilted, and adopt unique " empty curved " mode, bend in the middle part of steel band simultaneously, angle of bend increases to 21 ~ 23 ° by 9 ~ 11 °, and bending radius increases to 300 ~ 310mm by 280 ~ 290mm, and steel band starts toward " U " font Direction distortion;
4) bending apparatus in 1 passage, make to bend further in the middle part of steel band, angle of bend increases to 39 ~ 40.5 ° by 21-23 °, and bending radius is reduced to 280 ~ 290mm by 300 ~ 310mm;
5) through 3 passage beaders, bend further steel band edge, steel band middle bent angle increases to 56 ~ 58 ° by 39 ~ 40.5 °, and bending radius increases to 400 ~ 410mm by 280 ~ 290mm, and steel band edge is expanded, and now steel band becomes " U " type;
6) become the edger roll shaped device of 130 ° with 3 passages through 2 passage edgetrols, now steel band edge is bending starts toward " C " font Direction distortion;
7) through the precisive shaped device of 3 passages, by two radius passes of design, steel band thickens 0.1mm by the 1st passage precisive shaped back edge, again 0.05mm is thickened by steel band edge after the 2nd passage precisive shaped, by again thickening 0.05mm after the 3rd passage precisive shaped, three passage precisive shaped back edge thicken and reach 0.2mm, make steel band move closer to " O " font, reach the perfect condition of welding.
2. a kind of " U " moulding process for the manufacture of HFW welded tube according to claim 1, it is characterized in that, the device of precisive shaped described in step 7) comprises base (32), lower roll adjustment motor (33), roll stand (34), prerotation vane (35), side roller adjustment motor (36), top roll adjustment motor (37), top roll (38), side roller (39), lower roll (40), described roll stand (34) is fixed on base (32), described roll stand (34) is respectively arranged with top roll (38), prerotation vane (35), two side rollers (39) and lower roll (40), form the open-topped pair of shaping pass of radius, described top roll adjustment motor (37) is connected with top roll (38), two sides roller adjustment motor (36) are connected with two side rollers (39) respectively, described lower roll adjustment motor (33) is connected with lower roll (40), according to the width of prerotation vane (35), the shaping pass of the precisive shaped device of three passages is decreasing radius.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104607492A (en) * | 2015-01-19 | 2015-05-13 | 山东泰丰钢业有限公司 | Stable and parallel butt-joint technology for steel strip edges of automobile transmission shaft tubes |
| CN109332890A (en) * | 2018-10-31 | 2019-02-15 | 上海冀晟自动化成套设备有限公司 | Ladle body laser-beam welding machine and its application method |
| CN110038930A (en) * | 2019-05-09 | 2019-07-23 | 潘克云 | The thick moulding process of the steel band of ERW welded tube |
| CN110116145A (en) * | 2019-04-22 | 2019-08-13 | 太原科技大学 | A kind of forming method of straight seam welded pipe |
| CN110508647A (en) * | 2019-10-11 | 2019-11-29 | 山东泰丰钢业有限公司 | A kind of tubing shares thick molding roller pass device |
| CN111069362A (en) * | 2019-12-27 | 2020-04-28 | 舆软科技(上海)有限责任公司 | Forming method of tubular part |
| CN113927210A (en) * | 2021-10-15 | 2022-01-14 | 河北中慧利威节能科技有限公司 | Steel strip forming process |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607492A (en) * | 2015-01-19 | 2015-05-13 | 山东泰丰钢业有限公司 | Stable and parallel butt-joint technology for steel strip edges of automobile transmission shaft tubes |
| CN104607492B (en) * | 2015-01-19 | 2016-01-06 | 山东泰丰钢业有限公司 | A kind of vehicle transmission central siphon steel band edge stablizes parallel docking technique |
| CN109332890A (en) * | 2018-10-31 | 2019-02-15 | 上海冀晟自动化成套设备有限公司 | Ladle body laser-beam welding machine and its application method |
| CN110116145A (en) * | 2019-04-22 | 2019-08-13 | 太原科技大学 | A kind of forming method of straight seam welded pipe |
| CN110116145B (en) * | 2019-04-22 | 2020-07-10 | 太原科技大学 | Forming method of straight welded pipe |
| CN110038930A (en) * | 2019-05-09 | 2019-07-23 | 潘克云 | The thick moulding process of the steel band of ERW welded tube |
| CN110038930B (en) * | 2019-05-09 | 2020-07-28 | 潘克云 | Steel belt rough forming process of ERW welded pipe |
| CN110508647A (en) * | 2019-10-11 | 2019-11-29 | 山东泰丰钢业有限公司 | A kind of tubing shares thick molding roller pass device |
| CN111069362A (en) * | 2019-12-27 | 2020-04-28 | 舆软科技(上海)有限责任公司 | Forming method of tubular part |
| CN113927210A (en) * | 2021-10-15 | 2022-01-14 | 河北中慧利威节能科技有限公司 | Steel strip forming process |
| CN114535939A (en) * | 2022-03-22 | 2022-05-27 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN114535939B (en) * | 2022-03-22 | 2023-02-28 | 湖南胜利湘钢钢管有限公司 | Method for manufacturing longitudinal submerged arc welded pipe |
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