CN103071698B - Processing technology for enhanced spiral rib enhanced steel plastic composite pipe - Google Patents
Processing technology for enhanced spiral rib enhanced steel plastic composite pipe Download PDFInfo
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- CN103071698B CN103071698B CN201210572549.9A CN201210572549A CN103071698B CN 103071698 B CN103071698 B CN 103071698B CN 201210572549 A CN201210572549 A CN 201210572549A CN 103071698 B CN103071698 B CN 103071698B
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Abstract
The invention discloses a composite processing technology for an enhanced spiral rib and a thin-wall steel pipe. The processing technology comprises the steps of shaping a reinforcing rib, guiding the shaped reinforcing rib in place and performing welding and composite positioning on the thin-wall steel pipe. The processing technology particularly comprises the following steps: a, uncoiling the selected reinforcing rib according to the design requirement; b, performing tempering pretreatment on the reinforcing rib; c, performing preforming treatment on the radian of the reinforcing rib; and d, performing composite welding on the reinforcing rib and the thin-wall steel pipe. According to the technical scheme, a new production process for a spiral rib enhanced pipe is provided, so the defect that the thin-wall steel pipe hardly bears the tensile force and the bending moment for winding the reinforcing rib on the outer surface of the thin-wall steel pipe is overcome, and the reinforcing ribs with various shapes can be wound on the outer wall of the thin-wall steel pipe.
Description
Technical field
The present invention relates to a kind of processing technology of the transport pipeline for the inferior combustible and explosive area of coal mine, the spiral bar of specifically a kind of enhancing strengthens the processing technology of steel-plastics composite pipe.
Background technology
A lot of fields such as colliery, oil and natural gas exploitation and conveying all need different caliber pipe carrier gas, liquid or fluidized solid, these fields not only require that pipeline has conventional mechanical property (as bending resistance, tension, shock resistance), also need to possess lightweight, be convenient to install, low cost and other advantages; Spiral bar reinforced pipe will reduce the thickness of pipeline because it greatly improves the critical external compressive resistance of pipeline and ring stiffness, thus alleviate the weight of pipeline and be convenient to install and cost is low, and therefore, range of application is increasingly extensive, and demand is also more and more many.
At present, the structure of spiral bar mainly contains two kinds: one directly forms spiral bar on body, the Chinese patent being CN 101813216B as notification number discloses a kind of wall tube material with composite structure and preparation method thereof, it adopts two parallel extruders, extruder coextrusion tube wall flat rubber belting on mold barrel, reinforcement extruded by another extruder, the online heat of spiral is successively wound into and rotates and on the mold barrel of axial translation, molding bonded heavy caliber structure-wall pipe material, the method is not suitable for the situation that reinforcement is steel band; One is also had to be form spiral reinforcing rod by profiled strip through spiral welded, as the notification number Chinese patent that is CN 1928414B discloses the manufacture method of steel reinforced type steel-plastic composite winding pipe, its manufacture method is, first bar shaped steel band is processed into " П " steel band of model structure that two sides is coated with plastic clad, then " П " steel band of model spiral wrap is formed the steel reinforced type steel plastic composite with " П " steel band of model structure.A kind of rear method is applicable to machined steel banding pattern spiral and strengthens muscle, but is only applicable to the steel pipe of spiral weld, for inapplicable without seam welded tube, electrically welded tube; Preparation pipeline axial and radial tension and compression strength low; And for thin-wall metal steel pipe, its ring stiffness and mechanical strength lower, be difficult to bear and be wound around tension force needed for reinforcement and moment of flexure at its outer surface.
Summary of the invention
The technical problem to be solved in the present invention is to provide the processing technology that a kind of spiral bar strengthens steel-plastics composite pipe, it is wound around and welds spiral bar, enhances the ring stiffness of body and tensile strength on the outer wall of thin-wall steel tube, and on the inboard wall of tube body being provided with spiral bar and outer wall spray coated flame retardant antistatic coating, be applicable to inflammable and explosive, corrosion-prone environment; Technique is simple, production efficiency is high, be convenient to suitability for industrialized production.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is:
The spiral bar of enhancing and a complex machining process for thin-wall steel tube, comprise the shaping of reinforcement, reinforcement after shaping guide and put in place and thin-wall steel tube welding compound location, it is characterized in that processing technology comprises the steps:
Step a, the reinforcement uncoiling will chosen according to designing requirement: comprise the muscle material throughput direction and the thin-wall steel tube that determine by reinforcement helical angle and revolve the azimuth moving direction, after adjustment reinforcement carries form and feed line speed to meet designing requirement, introduce modified pretreatment process;
The modified pretreatment of step b, reinforcement: reinforcement is imported in the tempering system be made up of forward and backward damping roll device and the upper and lower guide roller after damping roll device arranged in a crossed manner, after damping setting, prestressed tension adjustment, propulsive force compensate each treatment step, guiding muscle material enters radian preforming operation;
Step c, reinforcement radian preformed process: with reference to spiral bar design radian, adjustment press roll relative distance, reinforcement end synchronous with device parameter dynamic conditioning is by rolling camber;
The composite welding of steps d, reinforcement and thin-wall steel tube: start thin-wall steel tube and revolve the position adjusting mechanism moved in drive unit, thin-wall steel tube is contacted with arc reinforcement, completes fixedly welding of muscle material termination and thin-wall steel tube, on the periphery of the then comprehensively Synchronization Control of corollary equipment, setting thin-wall steel tube, the rotation direction linear velocity of arbitrfary point is as the axis of thrust speed of reinforcement in tempering system, implement continuous synchronization welding procedure, form spiral bar reinforced pipe.
Preferably, before reinforcement introduces modified pretreatment process, chamfer machining operation is increased in step a.
In step a, the adjustment operation of reinforcement conveying form is by means of 2 ~ 15 pair rollers to the angle gradient be arranged in order along reinforcement feeding direction, the parallel axes of pair roller by horizontal direction gradual change to vertical direction, the form that the rolling face of described reinforcement becomes vertically to send to by the experiment material that pair roller is sent to by level.
In technique scheme, according to ring stiffness, the mechanical strength calculating of necessity, tentatively determine the helical angle that reinforcement is wound around or pitch and prestressing force, then with the helical angle of setting and prestressing force by shaping for reinforcement pre-bending, be wrapped in rotation and the thin-wall steel tube of axial translation can form spiral bar reinforced pipe; The environment intending using according to multiple tube, to spray respectively or after applying coating at spiral bar reinforced pipe inner and outer wall, can be used in inflammable, explosive, resistance to compression, uprising environment.
The beneficial effect adopting technique scheme to produce is: (1) the invention provides a kind of production technology of brand-new spiral bar reinforced pipe, not only overcome thin-wall steel tube and be difficult to bear the defect being wound around tension force needed for reinforcement and moment of flexure at its outer surface, and the reinforcement of various cross sectional shape can be wound around on the outer wall of thin-wall steel tube, as rectangle, square, special-shaped coil of strip or the steel band such as triangle, circle or arc, the height of the spiral bar formed can be 10 ~ 65mm, thickness is 2 ~ 10mm, enhances the ring stiffness of multiple tube; (2) process design of the present invention is reasonable, and reliable product quality, is suitable for industrial mass manufacture; (3) technique of the present invention is adopted can to prepare a kind of new structure multiple tube being skeleton with spiral enhancing thin-wall steel tube, have bending resistance, resistance to compression, strong shock resistance, lightweight, easy for installation and excellent flame-retardant and anti-static performance concurrently, it can be widely used in the numerous areas such as exploitation and conveying of colliery, petroleum gas.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of system based on processing technology of the present invention;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the right TV structure schematic diagram of damping roll device in Fig. 1;
Wherein, 1, uncoiling mechanism, 2, reinforcement, 3, damping roll device, 3-1, motor, 3-2, drive roll, 3-3, driven roll, 3-4, down pressing oil cylinder, 4, lower steering roll, 5, upper guide roller, 6-1, the first pressure roller, 6-2, the second pressure roller, 6-3, pushing tow roller, 7, thin-wall steel tube, 8, carrying roller, 9, test the speed roller, 10, steering cylinder, 11, driven roller, 12, arcuate guide rail, 13, swing arm.
Detailed description of the invention
The invention provides the processing technology that a kind of spiral bar strengthens Steel Thin-Wall plastic composite, comprise the shaping of reinforcement, reinforcement after shaping guides and put in place and thin-wall steel tube welding compound location, see Fig. 1 and Fig. 2, specifically comprise the steps:
Step a, the reinforcement uncoiling will will chosen according to designing requirement: comprise the muscle material throughput direction and the thin-wall steel tube that determine by reinforcement helical angle and revolve the azimuth moving direction, after adjustment reinforcement carries form and feed line speed to meet designing requirement, introduce modified pretreatment process; The uncoiling of reinforcement uses uncoiling mechanism 1, the structure of uncoiling mechanism comprise with decelerator motor be connected with motor by driving-belt, for the main shaft of fixing reinforcement muscular cramp;
The modified pretreatment of step b, reinforcement: reinforcement 2 is imported by forward and backward damping roll device and lower steering roll 4 after damping roll device 3 arranged in a crossed manner, in the tempering system that forms of guide roller 5, after damping setting, prestressed tension adjustment, propulsive force compensate each treatment step, guiding muscle material enters radian preforming operation; The effect of described tempering system be by uncoiling after steel band straight and apply certain prestressing force;
Step c, reinforcement radian preformed process: with reference to spiral bar design radian, adjustment press roll relative distance, reinforcement end synchronous with device parameter dynamic conditioning is by rolling camber; Three roller pre-shaping mechanisms are adopted reinforcement end rollers to be pressed into the radian of setting in the present embodiment;
The composite welding of steps d, reinforcement and thin-wall steel tube: start thin-wall steel tube and revolve the position adjusting mechanism moved in drive unit, thin-wall steel tube is contacted with arc reinforcement, completes fixedly welding of muscle material termination and thin-wall steel tube, on the periphery of the then comprehensively Synchronization Control of corollary equipment, setting thin-wall steel tube, the rotation direction linear velocity of arbitrfary point is as the axis of thrust speed of reinforcement in tempering system, implement continuous synchronization welding procedure, form spiral bar reinforced pipe.
Before reinforcement 2 introduces modified pretreatment process, chamfer machining operation is increased in the present embodiment step a.Chamfer machining operation by being arranged on reinforcement (2) feeding direction, be positioned at the bottom surface of reinforcement (2) both sides, be realizing with upper cutter or emery wheel for a pair of 45 ° of angles with level.The effect increasing chamfering is to form groove by the bottom surface of reinforcement 2, making reinforcement 2 weld securely with thin-wall steel tube 7.
In step a after reinforcement uncoiling, its rolling face is level, upward, when welding with thin-wall steel tube 7, this rolling face is vertical, therefore needs the conveying form of reinforcement to be adjusted, especially when the thickness of reinforcement is larger.In the present embodiment, experiment material operation is by means of 2 ~ 15 pair rollers to the angle gradient be arranged in order along reinforcement 2 feeding direction, the parallel axes of pair roller by horizontal direction gradual change to vertical direction, the form that the rolling face of described reinforcement becomes vertically to send to by the experiment material that pair roller is sent to by level.
In tempering system, the roller 9 that tests the speed also be provided with photoelectric encoder is provided with in step b.Test the speed the respective input of output welding system controlling organization of roller 9, the reinforcement transfer rate that the transfer rate of the reinforcement 2 recorded and other operation places record compared, to keep the transfer rate of each operation place reinforcement 2 synchronous.
Described in step b, the structure of forward and backward damping roll device is identical, the structure of this damping roll device comprises the drive roll 3-2 that band decelerator motor 3-1 drives and the driven roll 3-3 regulating volume under pressure by down pressing oil cylinder 3-4, and described drive roll 3-2 and driven roll 3-3 is provided with the groove with reinforcement mating shapes.The effect of front damping roll device realizes pinching of reinforcement, and rear damping roll device coordinates with front damping roll device and carries out tensioning to reinforcement 2 with the prestressing force set.See Fig. 3.
The end of reinforcement described in step c is by three roller pre-shaping device rolling cambers, the structure of described three roller pre-shaping devices comprises the first pressure roller 6-1 and the second pressure roller 6-2 and the pushing tow roller 6-3 between the first pressure roller 6-1 and the second pressure roller 6-2, and described pushing tow roller 6-3 is provided with vertical height regulating mechanism; The muscle material of drawing from modified pretreatment process is introduced into the horizontal roller that the first pressure roller 6-1, the second pressure roller 6-2 and pushing tow roller 6-3 are formed, and pushing tow roller 6-3 is processed into arc with the end of the parameter with tempering system axis of thrust speed sync upwards pushing tow reinforcement, reinforcement.Described second pressure roller 6-2 and pushing tow roller 6-3 also arranges horizontal mobile mechanism respectively, to form the spiral bar of different radian.
Described pushing tow roller 6-3 regulates its vertical height by oil cylinder; Described horizontal mobile mechanism is stepper motor.Pushing tow roller 6-3 and the second pressure roller 6-2 is positioned on support respectively, by the driving of stepper motor, pushing tow roller 6-3 and the second pressure roller 6-2 can carry out the adjustment of horizontal range.Before the end of reinforcement 2 and thin-wall steel tube 7 compound, first pressure roller 6-1, the second pressure roller 6-2 and pushing tow roller 6-3 are positioned on same level line, after reinforcement 2 enters the roller-way of the second pressure roller 6-2, pushing tow roller 6-3 by oil cylinder start by reinforcement 2 upwards pushing tow until formed design radian.When reinforcement 2 is welded to after on thin-wall steel tube 7, continuous seepage can be formed.
In another embodiment, be processed in arc technique by the end of reinforcement 2, the horizontal range of the second pressure roller 6-2 and pushing tow roller 6-3 can carry out translation simultaneously.
Second pressure roller 6-2 main shaft is provided with photoelectric encoder, the respective input of the output welding system controlling organization of photoelectric encoder.
In order to prevent welding bead oxidized, the welding procedure in steps d adopts carbon dioxide gas arc welding.Welding sequence can adopt and be wound around synchronous automatic welding equipment, can also be human weld.
In steps d, thin-wall steel tube revolves the driven roller 11 moving drive unit and comprise the carrying roller 8 being arranged on thin-wall steel tube 7 lower surface and the inclination being arranged on thin-wall steel tube upper surface, by the driven roller 11 tilted, thin-wall steel tube 7, there is rotary freedom and the axial translation free degree, driven roller 11 is provided with photoelectric encoder.
As required with the distribution ratio etc. of the ring stiffness of necessity, mechanical strength and axis and radial strength, tentatively determine the helical angle that reinforcement is wound around, the scope of described helical angle is 35 ° ~ 89 °, stepless adjustable, different helical angles is different with the distribution ratio of Radial drawing strength to axial tensile strength.The cross section of described reinforcement is rectangle, triangle or arc.Existing technique is difficult to directly be wound around by special-shaped to triangle or arc etc. reinforcement and be welded on thin-wall steel tube outer wall, because thin-wall steel tube is difficult to bear the tension force needed for deformed steel reinforcement and moment of flexure, the present invention by Shi Hanzhang and pre-bending shaping, reduce the tension force of reinforcement in winding process and moment of flexure.
Thin-wall steel tube adopts seamless steel pipe or electric welded steel pipe.Steel pipe specification: thickness is 0.8-6 mm, external diameter is φ 48-1527 mm; Steel pipe material: mild steel or low-alloy steel.
In the present embodiment, uncoiling mechanism 1, tempering system and three roller pre-shaping mechanisms are all arranged on strip, adjustable swing support, the swing arm 13 that the structure of described swing support comprises strip, the steering cylinder 10 being arranged on the arcuate guide rail 12 below swing arm 13 and being arranged in swing arm 13, have the free degree that arcuately guided way 12 carries out adjusting by steering cylinder 10, described swing arm 13, form reinforcement helical angle governor motion.
In sum, technique of the present invention, based on Automated condtrol, is provided with Systematical control mechanism, the respective input of the output termination controlling organization of the photoelectric encoder tested the speed in each operation, the corresponding output end of controlling organization connects the control end of each operation, forms the Synchronization Control of systematic parameter.
Claims (10)
1. a complex machining process for the spiral bar and the thin-wall steel tube that strengthen, comprises the shaping of reinforcement, reinforcement after shaping guides and to put in place and thin-wall steel tube welding compound is located, it is characterized in that processing technology comprises the steps:
Step a, the reinforcement uncoiling will chosen according to designing requirement: comprise the muscle material throughput direction and the thin-wall steel tube that determine by reinforcement helical angle and revolve the azimuth moving direction, after adjustment reinforcement carries form and feed line speed to meet designing requirement, introduce modified pretreatment process;
The modified pretreatment of step b, reinforcement: reinforcement is imported in the tempering system be made up of forward and backward damping roll device and the upper and lower guide roller after damping roll device arranged in a crossed manner, after damping setting, prestressed tension adjustment, propulsive force compensate each treatment step, guiding muscle material enters radian preforming operation;
Step c, reinforcement radian preformed process: with reference to spiral bar design radian, adjustment press roll relative distance, reinforcement end synchronous with device parameter dynamic conditioning is by rolling camber; Described reinforcement end is by three roller pre-shaping device rolling cambers;
The composite welding of steps d, reinforcement and thin-wall steel tube: start thin-wall steel tube and revolve the position adjusting mechanism moved in drive unit, thin-wall steel tube is contacted with arc reinforcement, completes fixedly welding of muscle material termination and thin-wall steel tube, on the periphery of the then comprehensively Synchronization Control of corollary equipment, setting thin-wall steel tube, the rotation direction linear velocity of arbitrfary point is as the axis of thrust speed of reinforcement in tempering system, implement continuous synchronization welding procedure, form spiral bar reinforced pipe;
Tempering system and three roller pre-shaping mechanisms are all arranged on strip, adjustable swing support, and the structure of described swing support comprises the swing arm (13) of strip, the arcuate guide rail (12) that is arranged on swing arm (13) below and the steering cylinder (10) be arranged in swing arm (13).
2. the spiral bar of enhancing according to claim 1 and the complex machining process of thin-wall steel tube, is characterized in that before reinforcement (2) introduces modified pretreatment process, increasing chamfer machining operation in step a.
3. the spiral bar of enhancing according to claim 1 and 2 and the complex machining process of thin-wall steel tube, it is characterized in that the adjustment operation of the conveying of reinforcement in step a form is by means of 2 ~ 15 pair rollers to the angle gradient be arranged in order along reinforcement feeding direction, the parallel axes of pair roller by horizontal direction gradual change to vertical direction, the form that the rolling face of described reinforcement becomes vertically to send to by the experiment material that pair roller is sent to by level.
4. the spiral bar of enhancing according to claim 1 and the complex machining process of thin-wall steel tube, is characterized in that being provided with in tempering system in step b the roller that tests the speed (9) be also provided with photoelectric encoder.
5. the spiral bar of enhancing according to claim 4 and the complex machining process of thin-wall steel tube, it is characterized in that the structure of forward and backward damping roll device described in step b is identical, the drive roll (3-2) that the motor (3-1) that its structure comprises band decelerator drives and the driven roll (3-3) regulating volume under pressure by down pressing oil cylinder (3-4), described drive roll (3-2) and driven roll (3-3) are provided with the groove with reinforcement mating shapes.
6. the spiral bar of enhancing according to claim 1 and the complex machining process of thin-wall steel tube, is characterized in that the pushing tow roller (6-3) that the structure of three roller pre-shaping devices described in step c comprises the first pressure roller (6-1) and the second pressure roller (6-2) and is positioned between the first pressure roller (6-1) and the second pressure roller (6-2); Described pushing tow roller (6-3) is provided with vertical height regulating mechanism; The muscle material of drawing from modified pretreatment process is introduced into the horizontal roller that the first pressure roller (6-1), the second pressure roller (6-2) and pushing tow roller (6-3) are formed, and pushing tow roller (6-3) is processed into arc with the end of the parameter with tempering system axis of thrust speed sync upwards pushing tow reinforcement, reinforcement.
7. the spiral bar of enhancing according to claim 6 and the complex machining process of thin-wall steel tube, it is characterized in that the vertical height that described pushing tow roller (6-3) regulates by oil cylinder, described second pressure roller (6-2) and pushing tow roller (6-3) are also respectively equipped with horizontal mobile mechanism.
8. the spiral bar of enhancing according to claim 6 and the complex machining process of thin-wall steel tube, is characterized in that the second pressure roller (6-2) main shaft is provided with photoelectric encoder.
9. the spiral bar of enhancing according to claim 1 and the complex machining process of thin-wall steel tube, is characterized in that the welding procedure in steps d adopts carbon dioxide gas arc welding.
10. the spiral bar of enhancing according to claim 1 and the complex machining process of thin-wall steel tube, it is characterized in that in steps d, thin-wall steel tube revolves the driven roller (11) moving drive unit and comprise the carrying roller (8) being arranged on thin-wall steel tube (7) lower surface and the inclination being arranged on thin-wall steel tube upper surface, by the driven roller (11) tilted, thin-wall steel tube (7), there is rotary freedom and the axial translation free degree, driven roller (11) is provided with photoelectric encoder.
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| CN201210572549.9A CN103071698B (en) | 2012-12-26 | 2012-12-26 | Processing technology for enhanced spiral rib enhanced steel plastic composite pipe |
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| CN103071699B (en) * | 2012-12-27 | 2015-06-17 | 伦慧东 | Processing system for spiral hooping reinforced thin-wall mental tube |
| CN103557381B (en) * | 2013-11-13 | 2015-07-08 | 河北金菱管业股份有限公司 | Strengthened steel pipe with rib spirally wound as well as special equipment and method for manufacturing preparing strengthened steel pipe |
| CN115430840B (en) * | 2022-08-29 | 2023-07-25 | 中南大学 | Multifunctional surface modification method for low-rigidity part based on laser additive manufacturing |
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| DE3417574A1 (en) * | 1984-05-11 | 1985-11-14 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Process for producing heat exchangers |
| CN102269298A (en) * | 2011-07-21 | 2011-12-07 | 哈尔滨斯达维机械制造有限公司 | Water pipe, strip, method as well as device for manufacturing water pipe |
| CN102672017A (en) * | 2012-05-31 | 2012-09-19 | 江阴大地装备股份有限公司 | Bending machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293540A (en) * | 1992-04-07 | 1993-11-09 | Babcock Hitachi Kk | Spiral finned tube manufacturing device |
| JP3637168B2 (en) * | 1996-12-04 | 2005-04-13 | 松下冷機株式会社 | Spiral fin fixing device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3417574A1 (en) * | 1984-05-11 | 1985-11-14 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Process for producing heat exchangers |
| CN102269298A (en) * | 2011-07-21 | 2011-12-07 | 哈尔滨斯达维机械制造有限公司 | Water pipe, strip, method as well as device for manufacturing water pipe |
| CN102672017A (en) * | 2012-05-31 | 2012-09-19 | 江阴大地装备股份有限公司 | Bending machine |
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