CN107234160A - A kind of symmetrical formula threeway forming high pressure in pipe equipment - Google Patents
A kind of symmetrical formula threeway forming high pressure in pipe equipment Download PDFInfo
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- CN107234160A CN107234160A CN201710607669.0A CN201710607669A CN107234160A CN 107234160 A CN107234160 A CN 107234160A CN 201710607669 A CN201710607669 A CN 201710607669A CN 107234160 A CN107234160 A CN 107234160A
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- pressure
- pipe
- hair
- cylinder
- tubing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/039—Means for controlling the clamping or opening of the moulds
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of symmetrical formula threeway forming high pressure in pipe equipment, the internal high pressure forming equipment includes clamping pressure machine, pressure charging system, electric control system, mold, lower mould, oil pump, installs that a left side on the table is cut somebody's hair, the right side is cut somebody's hair, left thrust cylinder, right thrust cylinder, retainer cylinder；The equipment ensure that pressure release failure will not occur in forming process for the high pressure inside tubing, tubing is avoided in formation zone formation fold, the generation that tubing feed supplement when occurring rapid deformation produces the phenomenon of spalling not in time is it also avoid simultaneously, and the final realization for ensureing that tubing part is stable gradually shapes and shaped.
Description
Technical field
The invention belongs to forming high pressure in pipe technical field, in particular to high in a kind of symmetrical formula threeway tubing
Pressing formation equipment.
Background technology
Forming high pressure in pipe principle is：After upper and lower mould matched moulds, cut somebody's hair seal simultaneously toward pipe tubing by left and right
Injection pressure forming medium in material, cut somebody's hair in left and right axial feed with realized under the collective effect of internal pressure tubing inner high voltage into
Shape.The part obtained by the manufacturing process has cost low, lightweight compared with conventional machining process, saves material, processing
Process is few, and forming quality is high, good mechanical property, the series of advantages such as stiffness and strength height.
The problem of existing forming high pressure in pipe equipment is present be：
It is by controlling left and right thrust cylinder or so to cut somebody's hair by force 1. existing forming high pressure in pipe equipment is when making part
Displacement processed carries out axial supplement, and such a enforceable mechanical feed profile of active is very difficult to match blank deformation patch contour forming
Process, easily causes feed supplement deficiency or feed supplement is excessive, it is difficult to rational control feed supplement amount, and control is got up more difficult；
2. by artificially setting feed supplement amount to control thrust cylinder displacement of cutting somebody's hair in left and right to carry out feed supplement to be also easy to produce feed supplement amount not enough,
Part is caused, because feed supplement is not enough, occur the phenomenon of spalling not in time, to cause the swollen type failure of high pressure during swollen type；
3. control of additive raw material sensitivity is not high, part is also easily caused in forming process because pipe internal pressure reaches that material is bent
Clothes point pipe occurs to cause after quick deformation the material at pipe end two is quick to be flowed into mold cavity, be also easy to produce mouth of pipe two ends from
Open left and right to cut somebody's hair, cause the highly pressurised liquid set up inside pipe to leak, it is impossible to ensure most basic internal high pressure
Molding condition；
4. feed supplement amount is excessive, it is easily caused part and the forming defects such as occurs corrugation, fold in formation zone, thickens, cause part
Swollen type failure.
The content of the invention
It is specially a kind of utilize present invention aims at a kind of symmetrical formula threeway forming high pressure in pipe equipment is provided
Left and right feed supplement is cut somebody's hair the forming high pressure in pipe equipment of fluid power Follow-up seal, with overcome present in existing device technology it is above-mentioned not
Foot.
The present invention is adopted the technical scheme that：
A kind of symmetrical formula threeway forming high pressure in pipe equipment, the internal high pressure forming equipment includes clamping pressure
Machine, pressure charging system, electric control system, mold, lower mould, install that a left side on the table is cut somebody's hair, the right side is cut somebody's hair, left thrust
Cylinder, right thrust cylinder, retainer cylinder；Wherein, mold is arranged on clamping pressure machine moved cross beam and passes through moved cross beam and guiding
Post is connected with forcing press master cylinder, and left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and crosshead displacement sensing is connected with lead
Hydraulic pressure sensor is connected with device, left and right thrust cylinder, pressure charging system includes booster, water pump, oil pump, booster connection
There is pressure sensor；The crosshead displacement sensor, hydraulic pressure sensor, oil pump, pressure sensor, retainer cylinder and electric-controlled
System line connection processed；The oil pump is connected with left and right thrust cylinder oil circuit；
The internal high pressure forming equipment is after clamping pressure machine matched moulds, by high-pressure medium under electric control system control
Pressurizeed by pressure charging system by the loading curve of setting, meanwhile, left and right cut somebody's hair is transported in the presence of thrust cylinder into mould
It is dynamic to form sealing until holding out against tubing two ends；In forming process, pressure charging system continues the loading curve by setting to tubing die cavity
High-pressure medium is squeezed into inside, and internally the lower pipe of the pressure effect of high-pressure medium deforms, and pipe two ends are on left and right cut somebody's hair
Reaction force reduce, the data feedback collected is returned electric control system by the hydraulic pressure sensor on left and right thrust cylinder,
Electric control system control left and right thrust cylinder enter give to ensure to be arranged on thrust cylinder left and right cut somebody's hair with pipe end in real time with
Dynamic sealing, and control the feeding of retainer cylinder to prevent tubing from shattering, it is ensured that the high pressure inside tubing will not be in forming process
Generation pressure release is failed, it is to avoid tubing is in formation zone formation fold, while it also avoid tubing feed supplement when occurring rapid deformation
The generation of the phenomenon of spalling is produced not in time, and the final realization for ensureing that tubing part is stable gradually shapes and shaped.
Present invention also offers a kind of symmetrical formula threeway tubing inside high-pressure forming method, it is characterised in that utilizes above-mentioned
Internal high pressure forming equipment, its specific steps includes：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right
Thrust cylinder, left and right is cut somebody's hair and retainer cylinder is in original state, ready pipe is put into lower mold cavity, clamping pressure
The descending matched moulds of owner's cylinder；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends signal,
Electric control system sends instruction, and the pipe inner chamber injection high-pressure medium of the water pump of pressure charging system into mould is to discharge in pipe
The air in portion, meanwhile, it is close until holding out against mouth of pipe two ends formation low pressure to the feeding of mouth of pipe two ends that left and right thrust cylinder promotes left and right to cut somebody's hair
Envelope, now, mouth of pipe two ends act on left and right cut somebody's hair on reaction force reach pre-set value；
(3) feed phase is shaped：This stage is under the conditions of mouth of pipe two ends formation low pressure seal is held out against, to pass through electrical control
System control pressure charging system control booster is pressurizeed by the loading curve of setting, internally under the pressure effect of high-pressure medium
Pipe is deformed, and increasingly presses close to dies cavity wall, and now the material at pipe two ends can be produced while pipe deforms
The raw trend flowed to pipe deformed area, reaction force of the pipe two ends on left and right cut somebody's hair reduces therewith, now, left and right to push away
Hydraulic pressure sensor on power cylinder changes the analog signal collected to electric control system, electrical control system by A/D
System sends the feeding of instruction control left and right thrust cylinder and is servo-actuated in real time with pipe end so as to ensure that the left and right being arranged on thrust cylinder is cut somebody's hair
Sealing, and causes left and right cut somebody's hair to push ahead by real-time Follow-up seal, realize the feed supplement of tube billet axial feed with it is final
Part pastes contour forming, is moved up and down and blank feeding while electric control system sends instruction control retainer cylinder, tubing is formed
Protection, prevents from shattering；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, pipe
Material cavity pressure is reduced rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system, electrically
Control system sends instruction, and left and right thrust cylinder, retainer cylinder retract original state, and the up moved cross beam of forcing press master cylinder is transported upwards
It is dynamic, take out formed product.
Compared with existing forming high pressure in pipe equipment, the present invention has the advantages that：
1. due to the internal high pressure forming equipment for fluid power Follow-up seal of being cut somebody's hair in forming process using left and right feed supplement, utilize a left side
Right thrust cylinder hydraulic pressure sensor gathers reaction in the reaction force data message of left and right thrust cylinder, and left and right thrust cylinder is applied
The row passive feed supplement of control intelligence in real time, realize that left and right is cut somebody's hair Follow-up seal, and the high-pressure medium inside real-time ensuring pipe can be pressed
Hyperbaric environment is set up according to default loading curve.Primary high-pressure forming condition is ensured.
2. or so the cut somebody's hair internal high pressure forming equipment of fluid power Follow-up seal of feed supplement be that a kind of passive feeding follows sealing, left and right
Cut somebody's hair according to feed supplement amount required when being deformed upon in the presence of pipe internally high-pressure medium, carry out rational feed supplement in real time.
Avoid existing left and right and cut somebody's hair that feed supplement that forced displacement feed supplement easily causes is not enough or feed supplement is excessive and causes part spalling, part
The shaping failure that corrugation, part are thickened.
3. retainer cylinder is lifted to tubing, it can prevent tubing from shattering.
Brief description of the drawings
Fig. 1 is symmetrical formula threeway forming high pressure in pipe device structure schematic diagram；
In figure：1st, clamping pressure machine；101st, forcing press master cylinder；102nd, moved cross beam；103rd, lead；104th, crosshead displacement
Sensor；2nd, pressure charging system；201st, booster；202nd, water pump；203rd, pressure sensor；204th, oil pump；3rd, electric control system；
4th, left thrust cylinder；5th, right thrust cylinder；6th, mould；601st, mold；602nd, lower mould；7th, a left side is cut somebody's hair；8th, the right side is cut somebody's hair；9th, hydraulic pressure pressure
Force snesor；10th, retainer cylinder；11st, oil pump.
Embodiment
It is special to a kind of symmetrical formula forming high pressure in pipe equipment and technology of the present invention with reference to the accompanying drawings and examples
Levy and be further described.
A kind of symmetrical formula threeway forming high pressure in pipe equipment, the internal high pressure forming equipment includes clamping pressure machine
(1), pressure charging system (2), electric control system (3), mold (601), lower mould (602), the left side of installation on the table are pushed away
Head (7), the right side are cut somebody's hair (8), left thrust cylinder (4), right thrust cylinder (5), retainer cylinder (10)；Wherein, mold (601) is arranged on matched moulds
It is connected on forcing press moved cross beam (102) and by moved cross beam (102) and lead (103) with forcing press master cylinder (101),
Left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and crosshead displacement sensor (104) is connected with lead (103), left and right to push away
Be connected with hydraulic pressure sensor (9) on power cylinder, pressure charging system (2) comprising booster (201), water pump (202), oil pump (204),
Booster is connected with pressure sensor (203)；The crosshead displacement sensor (103), hydraulic pressure sensor (9), oil pump
(204), pressure sensor (203), retainer cylinder (10) and electric control system (3) connection；The oil pump (204) with it is left,
Right thrust cylinder oil circuit connection；
The internal high pressure forming equipment is after clamping pressure machine matched moulds, by high-pressure medium under electric control system control
Pressurizeed by pressure charging system by the loading curve of setting, meanwhile, left and right cut somebody's hair is transported in the presence of thrust cylinder into mould
It is dynamic to form sealing until holding out against tubing two ends；In forming process, pressure charging system continues the loading curve by setting to tubing die cavity
High-pressure medium is squeezed into inside, and internally the lower pipe of the pressure effect of high-pressure medium deforms, and pipe two ends are on left and right cut somebody's hair
Reaction force reduce, the data feedback collected is returned electric control system by the hydraulic pressure sensor on left and right thrust cylinder,
Electric control system control left and right thrust cylinder enter give to ensure to be arranged on thrust cylinder left and right cut somebody's hair with pipe end in real time with
Dynamic sealing, and control the feeding of retainer cylinder to prevent tubing from shattering, it is ensured that the high pressure inside tubing will not be in forming process
Generation pressure release is failed, it is to avoid tubing is in formation zone formation fold, while it also avoid tubing feed supplement when occurring rapid deformation
The generation of the phenomenon of spalling is produced not in time, and the final realization for ensureing that tubing part is stable gradually shapes and shaped.
The present embodiment additionally provides a kind of symmetrical formula threeway tubing inside high-pressure forming method, it is characterised in that in utilization
The internal high pressure forming equipment stated, its specific steps include：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right
Thrust cylinder, left and right is cut somebody's hair and retainer cylinder is in original state, ready pipe is put into lower mold cavity, clamping pressure
The descending matched moulds of owner's cylinder；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends signal,
Electric control system sends instruction, and the pipe inner chamber injection high-pressure medium of the water pump of pressure charging system into mould is to discharge in pipe
The air in portion, meanwhile, it is close until holding out against mouth of pipe two ends formation low pressure to the feeding of mouth of pipe two ends that left and right thrust cylinder promotes left and right to cut somebody's hair
Envelope, now, mouth of pipe two ends act on left and right cut somebody's hair on reaction force reach pre-set value；
(3) feed phase is shaped：This stage is under the conditions of mouth of pipe two ends formation low pressure seal is held out against, to pass through electrical control
System control pressure charging system control booster is pressurizeed by the loading curve of setting, internally under the pressure effect of high-pressure medium
Pipe is deformed, and increasingly presses close to dies cavity wall, and now the material at pipe two ends can be produced while pipe deforms
The raw trend flowed to pipe deformed area, reaction force of the pipe two ends on left and right cut somebody's hair reduces therewith, now, left and right to push away
Hydraulic pressure sensor on power cylinder changes the analog signal collected to electric control system, electrical control system by A/D
System sends the feeding of instruction control left and right thrust cylinder and is servo-actuated in real time with pipe end so as to ensure that the left and right being arranged on thrust cylinder is cut somebody's hair
Sealing, and causes left and right cut somebody's hair to push ahead by real-time Follow-up seal, realize the feed supplement of tube billet axial feed with it is final
Part pastes contour forming, is moved up and down and blank feeding while electric control system sends instruction control retainer cylinder, tubing is formed
Protection, prevents from shattering；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, pipe
Material cavity pressure is reduced rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system, electrically
Control system sends instruction, and left and right thrust cylinder, retainer cylinder retract original state, and the up moved cross beam of forcing press master cylinder is transported upwards
It is dynamic, take out formed product.
Claims (2)
1. a kind of symmetrical formula threeway forming high pressure in pipe equipment, it is characterised in that the internal high pressure forming equipment includes closing
Molding pressure machine (1), pressure charging system (2), electric control system (3), mold (601), lower mould (602), retainer cylinder (10), peace
The left side of dress on the table is cut somebody's hair (7), the right side is cut somebody's hair (8), left thrust cylinder (4), right thrust cylinder (5)；Wherein, mold (601) is pacified
On clamping pressure machine moved cross beam (102) and pass through moved cross beam (102) and lead (103) and forcing press master cylinder
(101) connect, left and right cut somebody's hair is connected with left and right thrust cylinder respectively, and lead is connected with crosshead displacement sensor on (103)
(104) hydraulic pressure sensor (9), is connected with left and right thrust cylinder, pressure charging system (2) includes booster (201), water pump
(202), oil pump (204), booster are connected with pressure sensor (203)；The crosshead displacement sensor (103), hydraulic pressure
Sensor (9), oil pump (204), pressure sensor (203), retainer cylinder (10) and electric control system (3) connection；It is described
Oil pump (204) is connected with left and right thrust cylinder oil circuit；
The internal high pressure forming equipment is after clamping pressure machine matched moulds, to pass through high-pressure medium under electric control system control
Pressure charging system is pressurizeed by the loading curve of setting, meanwhile, left and right cut somebody's hair is moved directly in the presence of thrust cylinder into mould
Sealing is formed to tubing two ends are held out against；In forming process, pressure charging system continues the loading curve by setting to inside tubing die cavity
High-pressure medium is squeezed into, internally the lower pipe of the pressure effect of high-pressure medium deforms, and pipe two ends are anti-on left and right cut somebody's hair
Active force reduces, and the data feedback collected is returned electric control system by the hydraulic pressure sensor on left and right thrust cylinder, electrically
Control system control left and right thrust cylinder enter give to ensure to be arranged on thrust cylinder left and right cut somebody's hair be servo-actuated in real time with pipe end it is close
Envelope, and control the feeding of retainer cylinder to prevent tubing from shattering, it is ensured that the high pressure inside tubing will not occur in forming process
Pressure release is failed, it is to avoid tubing is in formation zone formation fold, while it is too late to it also avoid tubing feed supplement when occurring rapid deformation
When produce spalling phenomenon generation, the final realization for ensureing that tubing part is stable gradually shapes and shapes.
2. a kind of symmetrical formula threeway tubing inside high-pressure forming method, it is characterised in that utilize the interior height described in claim 1
Pressing formation equipment, its specific steps include：
(1) matched moulds stage：Mold is locked on clamping pressure machine moved cross beam, lower mode locking on the table, left and right thrust
Cylinder, left and right is cut somebody's hair and retainer cylinder is in original state, ready pipe is put into lower mold cavity, clamping pressure owner
The descending matched moulds of cylinder；
(2) the fluid infusion sealing stage：While clamping pressure owner's cylinder descending matched moulds, crosshead displacement sensor sends signal, electrically
Control system sends instruction, and the pipe inner chamber injection high-pressure medium of the water pump of pressure charging system into mould is to discharge inside pipe
Air, meanwhile, left and right thrust cylinder promotes left and right to cut somebody's hair to the feeding of mouth of pipe two ends until holding out against mouth of pipe two ends formation low pressure seal,
Now, mouth of pipe two ends act on left and right cut somebody's hair on reaction force reach pre-set value；
(3) feed phase is shaped：This stage is under the conditions of mouth of pipe two ends formation low pressure seal is held out against, to pass through electric control system
Control pressure charging system control booster is pressurizeed by the loading curve of setting, internally the lower pipe of the pressure effect of high-pressure medium
Deform, increasingly press close to dies cavity wall, now the material at pipe two ends can be produced while pipe deforms to
The trend of pipe deformed area flowing, reaction force of the pipe two ends on left and right cut somebody's hair reduces therewith, now, left and right thrust cylinder
On hydraulic pressure sensor the analog signal collected is changed to electric control system by A/D, electric control system hair
Go out the feeding of instruction control left and right thrust cylinder so as to ensure that the left and right being arranged on thrust cylinder is cut somebody's hair and the real-time Follow-up seal of pipe end,
And by real-time Follow-up seal left and right cut somebody's hair is pushed ahead, realize the feed supplement of tube billet axial feed and final part
Contour forming is pasted, is moved up and down and blank feeding while electric control system sends instruction control retainer cylinder, tubing formation is protected,
Prevent from shattering；
(4) stage is molded：After tubing part patch contour forming, electric control system control sends instruction, and booster is retracted, tubing type
Cavity pressure is reduced rapidly, and the hydraulic pressure sensor on left and right thrust cylinder is signaled to electric control system, electrical control
System sends instruction, and left and right thrust cylinder, retainer cylinder retract original state, and the up moved cross beam of forcing press master cylinder is moved, taken upwards
Go out formed product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607669.0A CN107234160A (en) | 2017-07-24 | 2017-07-24 | A kind of symmetrical formula threeway forming high pressure in pipe equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607669.0A CN107234160A (en) | 2017-07-24 | 2017-07-24 | A kind of symmetrical formula threeway forming high pressure in pipe equipment |
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| CN107234160A true CN107234160A (en) | 2017-10-10 |
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ID=59988023
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| CN201710607669.0A Pending CN107234160A (en) | 2017-07-24 | 2017-07-24 | A kind of symmetrical formula threeway forming high pressure in pipe equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584000A (en) * | 2017-10-17 | 2018-01-16 | 柳州北斗星液压科技有限公司 | Multi-pass pipe forming system and method |
| CN108097777A (en) * | 2017-12-22 | 2018-06-01 | 南昌航空大学 | A kind of method and device that internal high pressure forming three-way pipe both ends is controlled radially to thicken |
| CN108555108A (en) * | 2018-04-13 | 2018-09-21 | 南昌航空大学 | A kind of three-way pipe expansion forming device and three-way pipe branch pipe expansion forming method |
| CN109482704A (en) * | 2018-12-30 | 2019-03-19 | 江西腾勒动力有限公司 | A kind of tubing high pressure forming device and tubing high-pressure molding method |
| CN110170564A (en) * | 2019-07-05 | 2019-08-27 | 常州德研自动化科技有限公司 | Tube expansion work station and expansion tube method and electric tube expander |
| CN110193554A (en) * | 2019-07-09 | 2019-09-03 | 沧州市群升不锈钢制品有限公司 | A kind of high-efficient production line of triple valve |
| CN112372919A (en) * | 2020-11-13 | 2021-02-19 | 王仁权 | High-pressure forming equipment and method for perforated pipe |
| CN115647169A (en) * | 2022-12-08 | 2023-01-31 | 江苏新恒基特种装备股份有限公司 | Pressure adjusting device and method for hydraulic forming branch pipe of large-caliber ultra-long pipeline |
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| CN104084469A (en) * | 2014-06-25 | 2014-10-08 | 温州蓝天管件阀门有限公司 | Tee pipe hydraulic molding device |
| CN104384289A (en) * | 2014-12-08 | 2015-03-04 | 哈尔滨工业大学 | Large-tonnage short-stroke inner high pressure forming machine |
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| CN201147800Y (en) * | 2008-01-05 | 2008-11-12 | 湖州机床厂有限公司 | High-pressure variable load sealing structure |
| CN201394606Y (en) * | 2009-01-07 | 2010-02-03 | 江苏华阳金属管件有限公司 | Device controlling the reduction of wall thickness of skew T |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584000A (en) * | 2017-10-17 | 2018-01-16 | 柳州北斗星液压科技有限公司 | Multi-pass pipe forming system and method |
| CN108097777A (en) * | 2017-12-22 | 2018-06-01 | 南昌航空大学 | A kind of method and device that internal high pressure forming three-way pipe both ends is controlled radially to thicken |
| CN108097777B (en) * | 2017-12-22 | 2019-06-28 | 南昌航空大学 | A kind of method and device that control internal high pressure forming tee tube both ends radially thicken |
| CN108555108A (en) * | 2018-04-13 | 2018-09-21 | 南昌航空大学 | A kind of three-way pipe expansion forming device and three-way pipe branch pipe expansion forming method |
| CN109482704A (en) * | 2018-12-30 | 2019-03-19 | 江西腾勒动力有限公司 | A kind of tubing high pressure forming device and tubing high-pressure molding method |
| CN110170564A (en) * | 2019-07-05 | 2019-08-27 | 常州德研自动化科技有限公司 | Tube expansion work station and expansion tube method and electric tube expander |
| CN110193554A (en) * | 2019-07-09 | 2019-09-03 | 沧州市群升不锈钢制品有限公司 | A kind of high-efficient production line of triple valve |
| CN112372919A (en) * | 2020-11-13 | 2021-02-19 | 王仁权 | High-pressure forming equipment and method for perforated pipe |
| CN115647169A (en) * | 2022-12-08 | 2023-01-31 | 江苏新恒基特种装备股份有限公司 | Pressure adjusting device and method for hydraulic forming branch pipe of large-caliber ultra-long pipeline |
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Application publication date: 20171010 |