CN1057978A - Pick spiral steel pipe and bend forming method and equipment - Google Patents
Pick spiral steel pipe and bend forming method and equipment Download PDFInfo
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- CN1057978A CN1057978A CN 91106491 CN91106491A CN1057978A CN 1057978 A CN1057978 A CN 1057978A CN 91106491 CN91106491 CN 91106491 CN 91106491 A CN91106491 A CN 91106491A CN 1057978 A CN1057978 A CN 1057978A
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Abstract
The invention discloses a kind of forming method and equipment that picks spiral steel pipe and elbow.Its technological process mainly comprises auxiliary unit, feeding unit, heating unit, forming unit, and process parameter monitoring system.Its capital equipment has electronic machine, heating in medium frequency power supply, the horizontal molding fetal of spiral steel pipe and carrying roller and the major radius bend forming mold etc. sent to continuously of chain transmission type.Its major advantage is: send steel pipe continuously to, and not intermittently continuously and smoothly's moulding of spiral steel pipe, the production efficiency height, good product quality is saved electric energy, and safe and reliable, a production line both can be produced spiral steel pipe, can produce the major radius elbow again.
Description
The present invention relates to the brake forming of metal tube, particularly the steel pipe heat pushing bending is become the method and apparatus of helix tube and major radius elbow.Its technological process mainly comprises auxiliary unit, feeding unit, heating unit, forming unit, and process parameter monitoring system.
The steel helix tube picks molding technology thereof to begin to use in China from the eighties, adopt hydraulic jack to do mostly and send power to, because of being subjected to the restriction of hydraulic cylinder piston stroke, multi-circle spiral flow tube product of every production, needs tens times or up to a hundred intermittent feeds heated with intermittence, not only production efficiency is low and poor product quality, and power consumption is also a lot.Also, not only to be subjected to the adverse effect of gravity pressure in mold, but also tall and big factory building and complicated hanging device must be arranged because spiral steel pipe is vertical state forming.And a lines can only be produced a series products, and utilization rate of equipment and installations is not too high.Also,, be difficult to guarantee normal safety in production so automaticity is not high owing to do not adopt advanced monitoring technique in the production process.Occurred some bending tube special equipments in the patent documentation in recent years, for example Japan is to 87107459.1 and 88103278A patent of China's application.The preceding paragraph patent is called " coil pipe bending machine ", and the used thin-wall metal coil pipe of cooling device of electronic refrigerator or air-conditioning and so on is made in special use, and caliber has only 10 millimeters or littler, and is the rectangle coil pipe, and it can not bend the cylindrical helix tube of large diameter steel pipe.Consequent patent is called " equipment of making bend pipe ", mainly be to make the bend pipe product by means of stamen, but can not bend cylindrical spiral steel pipe, and its structure is too complicated, and cost is very high.
The objective of the invention is shortcoming and defect part, a kind of new process and the equipment that pick spiral steel pipe and major radius elbow are provided at prior art.Steel pipe is sent to continuously, not intermittently heating, spiral steel pipe is in the horizontal state moulding.And one production line can the pushing spiral steel pipe, major radius elbow product that again can the pushing all size.Adopt advanced effectively process parameter monitoring system, guarantee normal safety in production.
Above-mentioned purpose of the present invention is achieved through the following technical solutions.When the pushing spiral steel pipe, by auxiliary unit will be one by one steel pipe weld and carry out defect detecting test, steel pipe enters roller-way and the device location that is positioned, and makes steel pipe concentric with the maintenance of production line axis.Steel pipe is blocked by the steel pipe jig after entering feeding unit, and the chain that jig is sent to machine with steel pipe by chain-type is driving the continuously and smoothly and advancing.Previous jig arrives when limiting the position, and a back jig blocks steel pipe and do not continue off and on and sends to forward, previous jig is unloaded and returns to transport original position back stand-by.Two cover jig alternations so repeatedly, steel pipe just can be sent to continuously.After steel pipe enters heating and forming unit, forced crooked by mold while being heated with the horizontal state moulding.In type horizontal spiral steel pipe is held by two flat idlers after leaving mold, and continues rotation and advance, and when spiral steel pipe certain number of turns much of that and size, can stop to send to and heating, and spiral steel pipe is cut off, and hangs away with hanging the equipment of unloading.Each spiral steel pipe only stops and stops heating once.When pushing major radius elbow, just forming unit is used long half bend forming device instead, and other is constant.Chain is sent the steel pipe that the machine continuously and smoothly sends here to and is blocked by the slips of major radius bend forming device, radius of curvature on request and radian, the limit advances, limit heating, the bent moulding of spring, equally not intermittently yet, one of bend forming, stop and stop heating once, cut off and transport one, continue the next elbow of pushing again.In the process that picks spiral steel pipe and major radius elbow, by central control board major parameters such as the feed rate of sending machine to and moment of torsion are monitored and control by process parameter monitoring system, and the motor that steel pipe jig propulsive mechanism and jig return fortune mechanism is carried out control operation.
The capital equipment of each unit and part are in the technological process of the present invention: auxiliary unit mainly comprises pipe mechanism, counterpart jig, flaw detection instrument, roller-way, steel pipe locator and hangs the equipment of unloading etc.Feeding unit comprises that mainly buncher, gear reduction unit, chain send machine, steel pipe jig propulsive mechanism, steel pipe jig, photoelectric controller and central control board etc. to.Heating unit mainly comprises water-cooled heating collar, intermediate frequency power supply, intermediate-frequency transformer and cooling water pump etc.Forming unit mainly comprises horizontal shaped device of spiral steel pipe and major radius bend forming device.Process parameter monitoring system mainly comprises tester, PC controller, electric machine speed regulation table, sensor, display, alarm, buncher etc.
Chain in the above-mentioned capital equipment is sent machine to, mainly partly is made up of support, drive sprocket, driven sprocket, guide roller, tightener sprocket, chain and chain chute etc.Drive sprocket is installed on the output shaft of gear reduction unit, and the axle of all the other each trains is installed in to be sent on the machine support.This is sent machine to and does power with buncher, and slows down through gear reduction unit, drives the chain operation by drive sprocket, all the other each take turns effects such as tensioning and guiding, make chain can be continuously, at the uniform velocity, move reposefully.Send the supporting steel pipe jig of machine to chain and have two covers, every suit jig is by two semicircle slips are synthetic up and down.The plate part of jig both sides bottom stretch out downwards several can with the tooth of chain engages, under the promotion of jig propulsive mechanism, jig from the guide roller top of original position gradually with chain engages, on all teeth all mesh, steel pipe is blocked.Water-cooled heating collar in the heating unit adopts hollow copper tubing to simmer, and there are some apertures its inboard, is installed in the molding fetal and is enclosed within on the steel pipe.In the time of the heating collar energising, lead to cold water in it is hollow, self cools off on the one hand, comes the spiral steel pipe of brake forming is cooled off from aperture ejection water on the one hand, makes its cooling and shaping as early as possible.Cooling water pump also cools off to the water power cable water supply of intermediate-frequency transformer and intermediate frequency power supply simultaneously.Spiral steel pipe shaped device in the forming unit mainly comprises special mold and flat idler that bearing, riser, registration roller, starting the arc roller, helical pitch roller etc. are formed.Riser is installed on the bearing, and all the other each several parts are installed on the riser, and starting the arc roller and helical pitch roller are along spiral steel pipe pitch circle circle distribution, and its position can suitably be adjusted.Supporting and what abut against is two flat idlers with this mold, length is equivalent to spiral steel pipe, horizontal helix tube can be held, and with its rotation.
The present invention is compared with the prior art, and its major advantage is: owing to adopted the electric chain formula to send machine to, and use two cover steel pipe jig alternations, realized that steel pipe sends to continuously.Owing to adopted the horizontal shaped device of special spiral steel pipe, realized the one-shot forming of spiral steel pipe horizontal state.These all are the most basic technical characterictics, it also is most important advantage, therefore production efficiency can improve more than 40%, also owing to intermittently do not heat, so electric energy can be saved more than 20%, product quality obviously improves, qualification rate can reach 100%, acceptance rate can reach more than 90%, and does not need tall and big factory building, and the factory building investment can reduce more than 15%.Also, build the line investment more than 35% so can reduce because a production line can be produced the major radius elbow of spiral steel pipe and all size.Because adopted advanced and practical process parameter monitoring system, automaticity is higher, normal safety in production has had assurance.
Accompanying drawing 1 is a technological process block-diagram of the present invention.Fig. 2 is the continuous feed mechanism schematic diagram that the chain among Fig. 1 is sent machine and steel pipe jig composition to.Fig. 3 is the cross-sectional left view of Fig. 2.Fig. 4 is the horizontal shaped device schematic diagram of spiral steel pipe.Fig. 5 is that schematic diagram is looked on the right side of Fig. 4.Fig. 6 is the major radius bend forming device schematic diagram among Fig. 1.Fig. 7 is the cross-sectional left view of Fig. 6.Fig. 8 is the process parameter monitoring system block diagram.
Be described in further detail optimum implementation of the present invention below in conjunction with each accompanying drawing.
In technological process block-diagram shown in Figure 1, the 1st, steel pipe counterpart jig, the 2nd, defectoscope, the 3rd, the steel pipe locator, the 16th, spiral steel pipe hangs the equipment of unloading, and above each several part has been formed auxiliary unit of the present invention.Feeding unit is mainly by jig propulsive mechanism 4, and steel pipe jig 5, chain are sent machine 6 to, and photoelectric controller 7 and central control board 8 are formed.Heating unit comprises heating collar 9, intermediate-frequency transformer 10, intermediate frequency power supply 11 and cooling water pump 12 etc.Forming unit mainly comprises the horizontal shaped device of being made up of spiral steel pipe molding fetal 13 and flat idler 14 of spiral steel pipe, and major radius bend forming device 15.Steel pipe at first welds on platform 1, passes through defectoscope 2 flaw detections again, sends into feeding unit by roller-way.First steel pipe locator 3 prevents to radially wobble earlier steel pipe clamping location.Push rod promotion jig 5 by jig propulsive mechanism 4 meshes together its each tooth and the chain of sending machine 6 to gradually, blocks steel pipe with jig then, jig is driven by chain with steel pipe send to forward.Previous jig arrives when limiting the position, photoelectric controller 7 sends signal and gives central control board 8, central control board is controlled the jig propulsive mechanism immediately and is promoted a back in place and chain engages of jig again, and devote oneself to work, unload previous jig then, to transport jig back original position stand-by by returning fortune mechanism.Steel pipe has been crossed the heating collar 9 that second locator 3 just enters heating unit, is connected with bolt between heating collar and the intermediate-frequency transformer 10, and the water cable is connected between intermediate-frequency transformer and the intermediate frequency power supply 11.Cool off to heating collar, intermediate-frequency transformer and intermediate frequency power supply water supply simultaneously by cooling water pump 12.Heating collar is installed in the mold of forming unit.When the pushing spiral steel pipe, steel pipe enters spiral steel pipe molding fetal 13, and the spiral steel pipe of horizontal moulding is held by flat idler 14 after leaving mold immediately, and the drive carrying roller together rotates.When pushing major radius elbow, steel pipe enters major radius bend forming device 15.The spiral steel pipe of pushing moulding or major radius elbow hang away with hanging the equipment of unloading 16.
Fig. 2 and electric chain formula shown in Figure 3 are sent in the machine, and the 17th, send the support of machine to, the 18th, buncher, the 19th, gear reduction unit, the 20th, drive sprocket, the 21st, driven sprocket, the 22nd, guide roller, the 23rd, tightener sprocket, the 24th, chain, the 25th, chain chute, the 5th, steel pipe jig.This is sent machine to and does power with buncher 18, and drive sprocket 20 is installed on the output shaft of gear reduction unit 19, and the axle of all the other each trains all is installed on the support 17 of the machine of sending to.Steel pipe jig 5 wherein by two semicircle slips are synthetic up and down, can block steel pipe, tooth and chain engages is arranged, so chain can drive jig and steel pipe is sent to forward together again.
In Fig. 4 and the horizontal shaped device of spiral steel pipe shown in Figure 5, the 26th, its bearing, the 27th, riser, the 28th, registration roller, the 29th, starting the arc roller, the 30th, helical pitch roller, the 31st, roller rack, the 14th, flat idler, the 9th, heating collar, the 32nd, the spiral steel pipe product of pushing moulding.Riser 27 with sufficient intensity and rigidity is installed on the bearing 26, and the riser lower left corner is mounted to right V-type registration roller 28, and its height and position can suitably be adjusted.The riser lower right corner is installed with first starting the arc roller 29 and first helical pitch roller 30, and total several starting the arc rollers and helical pitch roller are installed on the riser 27 with highly distributing by certain angle along spiral steel pipe pitch circle circumference, and can suitably adjust.The circular arc of starting the arc roller and steel pipe outer rim match, and the helical pitch roller is a cylindrical roller.Heating collar 9 is installed under the riser, is in registration roller 28 and first starting the arc roller 29 centre positions.Two flat idlers 14 are parallel to each other, and highly consistent, length is equivalent to horizontal spiral steel pipe length, is installed in respectively on the support 31.
In Fig. 6 and the major radius bend forming device shown in Figure 7, the 33rd, its elbow slips, the 34th, the slips backup plate, the 35th, regulate leading screw, the 36th, sizing arm, the 37th, pressing plate, the 38th, connector, the 39th, vertical shaft, the 40th, T-slot, the 41st, locking member, the 42nd, double T shape slide.Slips about 33 minutes two, the inner edge semicircular in shape is about being installed in respectively on two backup plates 34.Can adjust two distances between the slips by leading screw 35, and can on sizing arm 36, slide.Some saw shape teeth are all arranged on sizing arm 36 and the pressing plate 37, and the sizing arm passes the square hole of connector 38, is fixed together by pressing plate 37 and connector 38.Connector 38 is installed on the vertical shaft 39, and vertical shaft is connected on the T-slot 40 with bolt, and T-slot is linked together by locking member 41 and double T shape slide 42.T-slot can slide on double T shape slide.When the elbow of pushing different size, can change slips and regulate radius of curvature.
In the process parameter monitoring system of the present invention shown in Figure 8, the 43rd, tester, the 44th, PC controller, the 18th, buncher, the 45th, sensor, the 46th, display, the 47th, alarm, the 48th, the power supply of motor, the 49th, electric machine speed regulation table, the 19th, gear reduction unit.Above each several part has constituted a semi-automatic closed-loop control system, and concentrates supervision by central control board, carries out automatically and manual adjustments control.At first be converted to the rotating speed and the moment of torsion of motor output shaft, be converted to the standard input electrical signal er of tester again according to desired feed rate of the elbow of certain spiral steel pipe or certain specification and major parameters such as sending thrust to.Sensor 45 is directly installed on the output shaft of buncher 18, sensor can record rotating speed of motor and moment of torsion at any time, and convert signal of telecommunication ec negative-feedback to the input of tester, er compares with standard signal, and by tester convert to the numeral on display 46, show, simultaneously comparative result is become signal e and gives PC controller 44.When ec equaled er, e was zero, and explanation work is very normal; As ec during less than er, e is greater than zero, and it is on the low side to demonstrate motor speed on the display 46, and moment of torsion is less than normal, will go to regulate electric machine speed regulation table 49, makes motor improve rotating speed and moment of torsion; When ec was slightly larger than er, e was slightly less than zero, will go to regulate electric machine speed regulation table 49, made motor reduce rotating speed and moment of torsion; When ec is for a long time bigger than er, e is more less than zero, and the devices illustrated operation is broken down, and PC controller 44 cuts off motor power 48 immediately, makes the motor stall, makes alarm 47 send alarm signal simultaneously, and cuts off the heating in medium frequency power supply immediately.Thereby guarantee ordinary production and avoid having an accident.In addition, PC controller 44 can also receive the signal that photoelectric controller 7 is sent here, goes to monitor when steel pipe jig 5 arrives the qualification position, and in time controls the jig propulsive mechanism and return the machine operation of transporting mechanism.
It is 89 to 159 millimeters steel pipe pushing helix tube that the foregoing description can utilize diameter at present, and the spiral steel pipe diameter is 0.8 to 2.1 meter, and its length is not limit.Can the pushing diameter be the major radius steel elbow of 89 to 325 millimeters various wall thickness again.
Claims (7)
1, a kind of the steel pipe pushing of heating is become the forming method and the equipment of spiral steel pipe or major radius elbow, its technological process mainly comprises auxiliary unit, feeding unit, heating unit, forming unit, and process parameter monitoring system, it is characterized in that:
A, when the pushing spiral steel pipe, by auxiliary unit will be one by one steel pipe weld and carry out defect detecting test, steel pipe enters roller-way and is positioned the device location, make steel pipe and production line axis keep concentric, steel pipe is blocked by the steel pipe jig after entering feeding unit, the chain that jig is sent to machine with steel pipe by chain-type is driving the continuously and smoothly and is sending to, previous jig arrives when limiting the position, the jig in back blocks steel pipe and does not continue off and on and sends to forward, previous jig unloaded and returns to transport original position back stand-by, after steel pipe enters heating and forming unit, forced crooked with the horizontal state moulding by mold while being heated, in type horizontal spiral steel pipe is held by two flat idlers after leaving mold, and continue rotation and advance, when a spiral steel pipe fixing turn much of that and size, can stop to send to and heating, spiral steel pipe is cut off hung away.
B, when pushing major radius elbow, just forming unit is used the major radius bend forming device instead, other is constant, and chain is sent the steel pipe that the machine continuously and smoothly sends here to and blocked radius of curvature on request and radian by the slips of major radius bend forming device, the limit advances, limit heating, the bent moulding of spring, equally not intermittently yet, one of bend forming cuts the next one, again the pushing next one.
C, in the process that picks spiral steel pipe and major radius elbow, by central control board major parameters such as the feed rate of sending machine to and moment of torsion are monitored and control by process parameter monitoring system, and the motor that steel pipe jig propulsive mechanism and jig return fortune mechanism is carried out control operation.
D, auxiliary unit mainly comprise pipe mechanism, counterpart jig, flaw detection instrument, roller-way, steel pipe locator and hang the equipment of unloading etc.; Feeding unit comprises that mainly buncher, gear reduction unit, chain send machine, steel pipe jig propulsive mechanism, steel pipe jig, photoelectric controller and central control board etc. to; Heating unit mainly comprises water-cooled heating collar, intermediate frequency power supply, intermediate-frequency transformer and cooling water pump etc.; Forming unit mainly comprises horizontal shaped device of spiral steel pipe and major radius bend forming device.
2, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that chain in the feeding unit sends machine to and mainly partly be made up of support, drive sprocket, driven sprocket, guide roller, tightener sprocket, chain and chain chute etc., drive sprocket is installed on the output shaft of gear reduction unit, the axle of all the other each trains is installed on the support of the machine of sending to, this is sent machine to and does power with buncher, and through the gear reduction unit deceleration, drive the chain operation by drive sprocket, all the other have respectively taken turns tensioning and guide effect.
3, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that sending the supporting steel pipe jig of machine to chain has two covers, every suit jig is by two semicircle slips are synthetic up and down, the plate part of jig both sides bottom stretch out downwards several can with the tooth of chain engages, under the promotion of jig propulsive mechanism, jig from the guide roller top of original position gradually with chain engages, on all teeth all mesh, steel pipe is blocked.
4, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that the water-cooled heating collar in the heating unit, adopt hollow copper tubing to simmer, there are some apertures its inboard, is installed in the molding fetal and is enclosed within on the steel pipe, in the time of the heating collar energising, logical cooling water in it is hollow, self cools off on the one hand, comes the spiral steel pipe of brake forming is cooled off from aperture ejection water on the one hand, makes its cooling and shaping as early as possible.
5, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that the spiral steel pipe shaped device in the forming unit, mainly comprise bearing, riser, registration roller, starting the arc roller, special mold and flat idler that helical pitch roller etc. are formed, riser is installed on the bearing, all the other each several parts are installed on the riser, starting the arc roller and helical pitch roller are along spiral steel pipe pitch circle circle distribution, its position can suitably be adjusted, supporting and what abut against is two flat idlers with this mold, length is equivalent to spiral steel pipe, the horizontal spiral steel pipe can be held, and with its rotation.
6, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that the major radius bend forming device in the forming unit, mainly by the elbow slips, the slips backup plate, regulate leading screw, the sizing arm, pressing plate, connector, vertical shaft, T-slot, locking member, compositions such as double-T shaped slide, about the elbow slips divides two, the inner edge semicircular in shape, about being installed in respectively on two backup plates, spacing is adjustable, and can on the sizing arm, slide, the sizing arm is installed on the vertical shaft by pressing plate and connector, and vertical shaft is installed on the double-T shaped slide by T type groove and locking member.
7, spiral steel pipe and bend forming method and the equipment of picking according to claim 1, it is characterized in that process parameter monitoring system, mainly comprise tester, PC controller, buncher, sensor, display, alarm, motor power, electric machine speed regulation table etc., above each several part has constituted a semi-automatic closed-loop control system, and, carry out automatically and manual adjustments control by the concentrated supervision of central control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106491 CN1038484C (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for shaping spiral steel tube and bend by hot push foreward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106491 CN1038484C (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for shaping spiral steel tube and bend by hot push foreward |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057978A true CN1057978A (en) | 1992-01-22 |
| CN1038484C CN1038484C (en) | 1998-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106491 Expired - Fee Related CN1038484C (en) | 1991-07-19 | 1991-07-19 | Method and apparatus for shaping spiral steel tube and bend by hot push foreward |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038484C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623724B (en) * | 2009-08-14 | 2011-12-07 | 河南华电金源管道有限公司 | Processing method for cold bending pipes by medium frequency heating |
| CN102500719A (en) * | 2011-11-09 | 2012-06-20 | 吉林昊宇电气股份有限公司 | Device for molding equant spiral heating pipe set |
| CN102699100A (en) * | 2012-05-23 | 2012-10-03 | 广东长征机械有限公司 | Method for bending spiral pipe |
| CN105710180A (en) * | 2016-04-22 | 2016-06-29 | 燕山大学 | Torsion forming method for long and thin cylindrical part with inner spiral curved surface |
| CN107520297A (en) * | 2017-08-31 | 2017-12-29 | 温州圣蓝工贸有限公司 | The manufacturing process and equipment of beam parts in a kind of Ti-Ni shape memory alloy glasses frame |
| CN107571484A (en) * | 2017-09-23 | 2018-01-12 | 昊天节能装备有限责任公司 | The prefabricated direct-buried elbow of high density polyethylene (HDPE) seamless outer protection tube shaped device and its moulding process |
| CN109794531A (en) * | 2018-12-28 | 2019-05-24 | 浙江铜加工研究院有限公司 | A kind of jaw chain device of coil pipe production equipment |
| CN110695271A (en) * | 2019-11-07 | 2020-01-17 | 天津源泰德润钢管制造集团有限公司 | Special-shaped ring and machining equipment and machining method thereof |
| CN115446174A (en) * | 2022-11-09 | 2022-12-09 | 江苏新恒基特种装备股份有限公司 | System and method for monitoring abnormity of bent pipe forming process and storage medium |
| CN116493433A (en) * | 2023-06-15 | 2023-07-28 | 张家港沙龙精密管业有限公司 | Intelligent management method and system for customizing steel pipe manufacturing process |
-
1991
- 1991-07-19 CN CN 91106491 patent/CN1038484C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101623724B (en) * | 2009-08-14 | 2011-12-07 | 河南华电金源管道有限公司 | Processing method for cold bending pipes by medium frequency heating |
| CN102500719A (en) * | 2011-11-09 | 2012-06-20 | 吉林昊宇电气股份有限公司 | Device for molding equant spiral heating pipe set |
| CN102699100A (en) * | 2012-05-23 | 2012-10-03 | 广东长征机械有限公司 | Method for bending spiral pipe |
| CN105710180A (en) * | 2016-04-22 | 2016-06-29 | 燕山大学 | Torsion forming method for long and thin cylindrical part with inner spiral curved surface |
| CN107520297A (en) * | 2017-08-31 | 2017-12-29 | 温州圣蓝工贸有限公司 | The manufacturing process and equipment of beam parts in a kind of Ti-Ni shape memory alloy glasses frame |
| CN107571484A (en) * | 2017-09-23 | 2018-01-12 | 昊天节能装备有限责任公司 | The prefabricated direct-buried elbow of high density polyethylene (HDPE) seamless outer protection tube shaped device and its moulding process |
| CN109794531A (en) * | 2018-12-28 | 2019-05-24 | 浙江铜加工研究院有限公司 | A kind of jaw chain device of coil pipe production equipment |
| CN109794531B (en) * | 2018-12-28 | 2024-04-19 | 浙江铜加工研究院有限公司 | Jaw chain device of coil pipe production equipment |
| CN110695271A (en) * | 2019-11-07 | 2020-01-17 | 天津源泰德润钢管制造集团有限公司 | Special-shaped ring and machining equipment and machining method thereof |
| CN115446174A (en) * | 2022-11-09 | 2022-12-09 | 江苏新恒基特种装备股份有限公司 | System and method for monitoring abnormity of bent pipe forming process and storage medium |
| CN115446174B (en) * | 2022-11-09 | 2023-01-17 | 江苏新恒基特种装备股份有限公司 | System and method for monitoring abnormity of bent pipe forming process and storage medium |
| CN116493433A (en) * | 2023-06-15 | 2023-07-28 | 张家港沙龙精密管业有限公司 | Intelligent management method and system for customizing steel pipe manufacturing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038484C (en) | 1998-05-27 |
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