CN103071698A - 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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- CN103071698A CN103071698A CN2012105725499A CN201210572549A CN103071698A CN 103071698 A CN103071698 A CN 103071698A CN 2012105725499 A CN2012105725499 A CN 2012105725499A CN 201210572549 A CN201210572549 A CN 201210572549A CN 103071698 A CN103071698 A CN 103071698A
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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 inflammable and explosive place 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 bore pipeline transportation gases, liquid or fluidized solid, these fields not only require pipeline to have conventional mechanical property (such as bending resistance, tension, shock resistance), also need to possess lightweight, be convenient to install low cost and other advantages; The spiral bar reinforced pipe will reduce the thickness of pipeline because it has greatly improved the critical external compressive resistance of pipeline and ring stiffness, thus alleviated the weight of pipeline and be convenient to install and cost low, therefore, range of application is increasingly extensive, demand is also more and more many.
At present, the structure of spiral bar mainly contains two kinds: a kind of is directly to form spiral bar on body, be that the Chinese patent of CN 101813216B discloses a kind of wall tube material with composite structure and preparation method thereof such as notification number, it adopts two parallel extruders, extruder coextrusion tube wall flat rubber belting on mold barrel, another extruder is extruded reinforcement, online successively spiral heat is wound on the mold barrel of rotation and axial translation, molding bonded heavy caliber structure-wall pipe material, the method are not suitable for the situation that reinforcement is steel band; Also having a kind of is to form spiral reinforcing rod by profiled strip through spiral welded, be the manufacture method that the Chinese patent of CN 1928414B discloses steel reinforced type steel-plastic composite winding pipe such as notification number, its manufacture method is, at first the bar shaped steel band is processed into " П " steel band of model structure that the two sides is coated with plastic clad, then the spiral winding of " П " steel band of model is formed the steel reinforced type steel plastic composite with " П " steel band of model structure.Rear a kind of 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; The pipeline axial of preparation and radially tension and compression strength are low; And for the thin-wall metal steel pipe, its ring stiffness and mechanical strength are lower, are difficult to bear at its outer surface twine required tension force and the moment of flexure of reinforcement.
Summary of the invention
The technical problem to be solved in the present invention provides the processing technology that a kind of spiral bar strengthens steel-plastics composite pipe, its outer wall at thin-wall steel tube twines and welding spiral bar, the ring stiffness that has strengthened body and tensile strength, and on the inboard wall of tube body that is provided with spiral bar and outer wall the 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:
A kind of spiral bar of enhancing and the complex machining process of thin-wall steel tube comprise that the guiding of the shaping of reinforcement, the reinforcement after shaping puts in place and thin-wall steel tube welds compound location, it is characterized in that processing technology comprises the steps:
Step a, will be according to designing requirement with the reinforcement uncoiling that chooses: comprise that the muscle material throughput direction and the thin-wall steel tube that determine by the reinforcement helical angle revolve the azimuth of moving direction, after adjusting reinforcement conveying form and feed line speed and meeting designing requirement, introduce modified pretreatment process;
The modified preliminary treatment of step b, reinforcement: reinforcement is imported by forward and backward damping roll device and arranged in a crossed manner in the tempering system that the upper and lower guide roller of damping roll device back forms, after damping setting, prestressed tension adjusting, propulsive force compensated each treatment step, guiding muscle material entered radian preformed operation;
Step c, the preformed of reinforcement radian process: with reference to spiral bar design radian, adjust press roll relative distance, dynamically adjust synchronously with device parameter, the reinforcement end is by the 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 that moves in the drive unit, make thin-wall steel tube and arc reinforcement contact, finish the fixedly welding of muscle material termination and thin-wall steel tube, then comprehensively the Synchronization Control of corollary equipment, set the rotation direction linear velocity of arbitrfary point on the periphery of thin-wall steel tube as the axis of thrust speed of reinforcement in tempering system, implement the continuous synchronization welding procedure, form the spiral bar reinforced pipe.
Preferably, before introducing modified pretreatment process, reinforcement increases the chamfer machining operation among the step a.
The adjustment operation that reinforcement is carried form among the step a is by means of the pair roller of 2 ~ 15 pairs of angle gradients that are arranged in order along the reinforcement feeding direction, to vertical direction, the form that the rolling face of described reinforcement is sent to by level by pair roller is adjusted to the form of vertically sending to the parallel axes of pair roller by the horizontal direction gradual change.
In the technique scheme, ring stiffness, mechanical strength according to necessity are calculated, preliminary helical angle or pitch and the prestressing force of determining that reinforcement twines, then with the helical angle set and prestressing force with reinforcement pre-bending moulding, be wrapped on the thin-wall steel tube of rotation and axial translation and can form the spiral bar reinforced pipe; The environment that intend to use according to multiple tube, spiral bar reinforced pipe inner and outer wall spray respectively or applying coating after, can be used in inflammable, explosive, resistance to compression, the uprising environment.
The beneficial effect that adopts technique scheme to produce is: (1) the invention provides a kind of production technology of brand-new spiral bar reinforced pipe, not only having overcome thin-wall steel tube is difficult to bear at its outer surface and twines the required tension force of reinforcement and the defective of moment of flexure, and can twine at the outer wall of thin-wall steel tube the reinforcement of various cross sectional shapes, such as special-shaped coil of strip or steel bands such as rectangle, square, triangle, circle or arcs, the height of the spiral bar that forms can be 2 ~ 10mm for 10 ~ 65mm, thickness, has strengthened 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) adopt technique of the present invention can prepare a kind of new structure multiple tube take spiral enhancing thin-wall steel tube as skeleton, have bending resistance, resistance to compression, strong shock resistance, lightweight, easy for installation and good flame-retardant and anti-static performance concurrently, it can be widely used in the numerous areas such as the exploitation of colliery, petroleum gas and conveying.
Description of drawings
Fig. 1 is based on system master's TV structure schematic diagram of 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 among 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, the roller that tests the speed, 10, steering cylinder, 11, driven roller, 12, the arcuate guide rail, 13, swing arm.
The specific embodiment
The invention provides the processing technology that a kind of spiral bar strengthens the Steel Thin-Wall plastic composite, comprise the shaping of reinforcement, the guiding of the reinforcement after shaping puts in place and thin-wall steel tube welds compound location, referring to Fig. 1 and Fig. 2, specifically comprise the steps:
Step a, will be according to designing requirement with the reinforcement uncoiling that chooses: comprise that the muscle material throughput direction and the thin-wall steel tube that determine by the reinforcement helical angle revolve the azimuth of moving direction, after adjusting reinforcement conveying form and feed line speed and meeting designing requirement, introduce modified pretreatment process; Uncoiling mechanism 1 is used in the uncoiling of reinforcement, comprise in the structure of uncoiling mechanism with the motor of decelerator be connected driving-belt and be connected, be used for fixing the main shaft of reinforcement muscular cramp with motor;
The modified preliminary treatment of step b, reinforcement: with reinforcement 2 import by forward and backward damping roll device and the lower steering roll 4 in damping roll device 3 back arranged in a crossed manner, in the tempering system that forms of guide roller 5, after damping setting, prestressed tension adjusting, propulsive force compensated each treatment step, guiding muscle material entered radian preformed operation; The effect of described tempering system is that the steel band after the uncoiling is straight and applies certain prestressing force;
Step c, the preformed of reinforcement radian process: with reference to spiral bar design radian, adjust press roll relative distance, dynamically adjust synchronously with device parameter, the reinforcement end is by the rolling camber; Adopt three roller pre-shaping mechanisms the 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 that moves in the drive unit, make thin-wall steel tube and arc reinforcement contact, finish the fixedly welding of muscle material termination and thin-wall steel tube, then comprehensively the Synchronization Control of corollary equipment, set the rotation direction linear velocity of arbitrfary point on the periphery of thin-wall steel tube as the axis of thrust speed of reinforcement in tempering system, implement the continuous synchronization welding procedure, form the spiral bar reinforced pipe.
Before introducing modified pretreatment process, reinforcement 2 increases the chamfer machining operation among the present embodiment step a.The chamfer machining operation by be arranged on reinforcement (2) feeding direction, be positioned at reinforcement (2) both sides the bottom surface, with a pair ofly realizing with upper cutter or emery wheel that level is 45 ° of angles.The effect that increases chamfering is in order to form groove in the bottom surface of reinforcement 2, reinforcement 2 and thin-wall steel tube 7 to be welded securely.
Among the step a after the reinforcement uncoiling, its rolling face is level, up, and when with thin-wall steel tube 7 welding, this rolling face is vertical, therefore the conveying form of reinforcement need to be adjusted, especially when the thickness of reinforcement is larger.To adjust operation be pair roller by means of 2 ~ 15 pairs of angle gradients that are arranged in order along reinforcement 2 feeding directions to form in the present embodiment, to vertical direction, the form that the rolling face of described reinforcement is sent to by level by pair roller is adjusted to the form of vertically sending to the parallel axes of pair roller by the horizontal direction gradual change.
In tempering system, be provided with the roller 9 that tests the speed that also is provided with photoelectric encoder among the step b.The test the speed respective input of output welding system controlling organization of roller 9 compares the transfer rate of the reinforcement 2 that records and the reinforcement transfer rate that other operation places record, and is synchronous with the transfer rate that keeps each operation place reinforcement 2.
The structure of forward and backward damping roll device described in the step b is identical, comprise the drive roll 3-2 that drives with decelerator motor 3-1 and the driven roll 3-3 that regulates volume under pressure by down pressing oil cylinder 3-4 in the structure of this damping roll device, described drive roll 3-2 and driven roll 3-3 are provided with the groove that is complementary with the reinforcement shape.The effect of front damping roll device is to realize that pinching of reinforcement, rear damping roll device cooperate with front damping roll device reinforcement 2 is carried out tensioning with the prestressing force of setting.Referring to Fig. 3.
The end of reinforcement described in the step c is by three roller pre-shaping device rolling cambers, comprise 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 in the structure of described three roller pre-shaping devices, 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 form, and pushing tow roller 6-3 is to be processed into arc with the make progress end of pushing tow reinforcement, reinforcement of the synchronous parameter of tempering system axis of thrust speed.Described the second pressure roller 6-2 and pushing tow roller 6-3 also are separately positioned on horizontal mobile mechanism, in order to form the spiral bar of different radians.
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 be positioned at respectively on the support, 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 are compound, the first pressure roller 6-1, the second pressure roller 6-2 and pushing tow roller 6-3 are positioned on the same level line, enter the roller-way of the second pressure roller 6-2 when reinforcement 2 after, pushing tow roller 6-3 begins reinforcement 2 is made progress pushing tow until form the radian of design by oil cylinder.After reinforcement 2 is welded on the thin-wall steel tube 7, can form continuous production.
In another embodiment, the end of reinforcement 2 is being processed in the arc technique, the horizontal range of the second pressure roller 6-2 and pushing tow roller 6-3 can be carried out translation simultaneously.
The 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.
Oxidized in order to prevent welding bead, the welding procedure in the steps d adopts carbon dioxide gas arc welding.Welding sequence can adopt and twine synchronous automatic welding equipment, can also be artificial welding.
Thin-wall steel tube revolves and moves the driven roller 11 that drive unit comprises the carrying roller 8 that is arranged on thin metallic tubd 7 lower surfaces and is arranged on the inclination of thin metallic tubd upper surface in the steps d, have rotary freedom and the axial translation free degree by the driven roller 11, the thin metallic tubd 7 that tilt, be provided with photoelectric encoder at driven roller 11.
As required with the ring stiffness of necessity, mechanical strength and axially and the distribution ratio of radial strength etc., the preliminary helical angle of determining that reinforcement twines, the scope of described helical angle is 35 ° ~ 89 °, stepless adjustable, and different helical angles is different to the distribution ratio of axial tensile strength and Radial drawing strength.The cross section of described reinforcement is rectangle, triangle or arc.Existing technique is to be difficult to directly twine and be welded on the special-shaped reinforcements such as triangle or arc on the thin-wall steel tube outer wall, because thin-wall steel tube is difficult to bear the required tension force of deformed steel reinforcement and moment of flexure, the present invention is by applying prestressing force and pre-bending moulding, having reduced tension force and the moment of flexure of reinforcement in winding process.
Thin metallic tubd adopts seamless steel pipe or electric welded steel pipe.The steel pipe specification: thickness is 0.8-6 mm, and external diameter is φ 48-1527 mm; Steel pipe material: mild steel or low-alloy steel.
Uncoiling mechanism 1, tempering system and three roller pre-shaping mechanisms all are arranged on strip, the adjustable swing support in the present embodiment, comprise in the structure of described swing support strip swing arm 13, be arranged on the arcuate guide rail 12 of swing arm 13 belows and be arranged on steering cylinder 10 in the swing arm 12, have the free degree adjusted along arcuate guide rail 12, form reinforcement helical angle governor motion by steering cylinder 10, described swing arm 12.
In sum, technique of the present invention is controlled based on automation, is provided with the system control machine structure, the respective input of the output termination controlling organization of the photoelectric encoder of the usefulness that tests 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. the complex machining process of the spiral bar of an enhancing and thin-wall steel tube comprises the shaping of reinforcement, the guiding of the reinforcement after shaping puts in place and thin-wall steel tube welds compound location, it is characterized in that processing technology comprises the steps:
Step a, will be according to designing requirement with the reinforcement uncoiling that chooses: comprise that the muscle material throughput direction and the thin-wall steel tube that determine by the reinforcement helical angle revolve the azimuth of moving direction, after adjusting reinforcement conveying form and feed line speed and meeting designing requirement, introduce modified pretreatment process;
The modified preliminary treatment of step b, reinforcement: reinforcement is imported by forward and backward damping roll device and arranged in a crossed manner in the tempering system that the upper and lower guide roller of damping roll device back forms, after damping setting, prestressed tension adjusting, propulsive force compensated each treatment step, guiding muscle material entered radian preformed operation;
Step c, the preformed of reinforcement radian process: with reference to spiral bar design radian, adjust press roll relative distance, dynamically adjust synchronously with device parameter, the reinforcement end is by the 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 that moves in the drive unit, make thin-wall steel tube and arc reinforcement contact, finish the fixedly welding of muscle material termination and thin-wall steel tube, then comprehensively the Synchronization Control of corollary equipment, set the rotation direction linear velocity of arbitrfary point on the periphery of thin-wall steel tube as the axis of thrust speed of reinforcement in tempering system, implement the continuous synchronization welding procedure, form the spiral bar reinforced pipe.
2. the complex machining process of the spiral bar of enhancing according to claim 1 and thin-wall steel tube is characterized in that increasing among the step a chamfer machining operation before reinforcement (2) is introduced modified pretreatment process.
3. the complex machining process of the spiral bar of enhancing according to claim 1 and 2 and thin-wall steel tube, it is characterized in that adjustment operation that reinforcement among the step a carries form is by means of the pair roller of 2 ~ 15 pairs of angle gradients that are arranged in order along the reinforcement feeding direction, to vertical direction, the form that the rolling face of described reinforcement is sent to by level by pair roller is adjusted to the form of vertically sending to the parallel axes of pair roller by the horizontal direction gradual change.
4. the complex machining process of the spiral bar of enhancing according to claim 1 and thin-wall steel tube is characterized in that being provided with among the step b roller that tests the speed (9) that also is provided with photoelectric encoder in tempering system.
5. the complex machining process of the spiral bar of enhancing according to claim 4 and thin-wall steel tube, the structure that it is characterized in that forward and backward damping roll device described in the step b is identical, comprise the drive roll (3-2) that the motor (3-1) with decelerator drives and the driven roll (3-3) of regulating volume under pressure by down pressing oil cylinder (3-4) in its structure, described drive roll (3-2) and driven roll (3-3) are provided with the groove that is complementary with the reinforcement shape.
6. the complex machining process of the spiral bar of enhancing according to claim 1 and thin-wall steel tube, it is characterized in that reinforcement end described in the step c by three roller pre-shaping device rolling cambers, comprise the first pressure roller (6-1) and the second pressure roller (6-2) in the structure of described three roller pre-shaping devices and be positioned at the first pressure roller (6-1) and the second pressure roller (6-2) between pushing tow roller (6-3); 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) form, and pushing tow roller (6-3) is to be processed into arc with the make progress end of pushing tow reinforcement, reinforcement of the synchronous parameter of tempering system axis of thrust speed.
7. the complex machining process of the spiral bar of enhancing according to claim 6 and thin-wall steel tube, it is characterized in that the vertical height that described pushing tow roller (6-3) is regulated by oil cylinder, described the second pressure roller (6-2) and pushing tow roller (6-3) also are respectively equipped with at horizontal mobile mechanism.
8. the complex machining process of the spiral bar of enhancing according to claim 6 and thin-wall steel tube is characterized in that the second pressure roller (6-2) main shaft is provided with photoelectric encoder.
9. the complex machining process of the spiral bar of enhancing according to claim 1 and thin-wall steel tube is characterized in that the welding procedure in the steps d adopts carbon dioxide gas arc welding.
10. the complex machining process of the spiral bar of enhancing according to claim 1 and thin-wall steel tube, it is characterized in that in the steps d that thin-wall steel tube revolves moves drive unit and comprises the carrying roller (8) that is arranged on thin metallic tubd (7) lower surface and the driven roller (11) that is arranged on the inclination of thin metallic tubd upper surface, have rotary freedom and the axial translation free degree by the driven roller (11), the thin metallic tubd (7) that tilt, be provided with photoelectric encoder at driven roller (11).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071699A (en) * | 2012-12-27 | 2013-05-01 | 伦慧东 | Processing system for spiral hooping reinforced thin-wall mental tube |
| CN103557381A (en) * | 2013-11-13 | 2014-02-05 | 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 |
| CN115430840A (en) * | 2022-08-29 | 2022-12-06 | 中南大学 | Multifunctional surface modification method for weak-rigidity part based on laser additive manufacturing |
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| CN103557381A (en) * | 2013-11-13 | 2014-02-05 | 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 |
| CN115430840A (en) * | 2022-08-29 | 2022-12-06 | 中南大学 | Multifunctional surface modification method for weak-rigidity part based on laser additive manufacturing |
| 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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