CN103639609A - Method and device for thickening end of thin-walled seamless pipe - Google Patents
Method and device for thickening end of thin-walled seamless pipe Download PDFInfo
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- CN103639609A CN103639609A CN201310645230.9A CN201310645230A CN103639609A CN 103639609 A CN103639609 A CN 103639609A CN 201310645230 A CN201310645230 A CN 201310645230A CN 103639609 A CN103639609 A CN 103639609A
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- wall
- pipe
- thin
- joint
- seamless pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/021—Isostatic pressure welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
- Forging (AREA)
Abstract
The invention discloses a method and device for thickening the end of a thin-walled seamless pipe. The device comprises a pipe end heating device, a loading device, a thin-walled pipe clamping and fixing device and a control system. According to the method and device for thickening the end of the thin-walled seamless pipe, pressure welding and brazing are combined, thickening of the end of the thin-walled seamless steel pipe is achieved through welding, the technical defect of unstability occurring when thickening is achieved with the hot upset-extruding technology is overcome, and then a flat and smooth combining surface is realized; deformation of the position where the thin-walled seamless pipe and a connector are connected is small, combining strength is high, and the device is reasonable in structural design, simple in operation, and high in reliability and practicability.
Description
Technical field
The present invention relates to seamless steel pipe and connect technology field, particularly a kind of method and apparatus that is used to thin-wall seamless pipe end pipe wall thickening.
Background technology
Seamless steel pipe has hollow section, and a large amount of pipelines as carrying fluid, as the pipeline of transfer oil, natural gas, coal gas, water and some solid material etc.Steel pipe is compared with solid steel such as round steel, and when bending resistance torsional strength is identical, weight is lighter, is a kind of Economic Section steel, is widely used in manufacturing structure part and machine components.Seamless steel pipe is carrying out when end connects adopting flange to connect, or first steel pipe is carried out to end upsetting squeeze, makes end pipe wall thickening, also can increase wall thickness by the form in steel tube end part built-up welding, then connects.Because flange connects the problem that easily produces air-tightness aspect, the tube wall that the mode of employing built-up welding thickens, its strength ratio is lower, so adopt the mode of pipe end upsetting squeeze that tube wall is thickened to the seamless steel pipe for delivery of liquid material more, by pier roughcast tool, carry out cold pier or hot pier, seamless pipe is in axial direction shortened, and wall thickness thickens.
Thin-wall seamless steel pipe is since coming out, lightweight with it, cost is low, heat exchange efficiency Gao Ershen is subject to the user's of all circles favor, and especially in petrochemical industry, application is more extensive.Because the tube wall of thin-wall seamless pipe is very thin, when it is subject to larger axis to load, the easy unstability of tube wall, produces the destructions such as gauffer or distortion, so should not adopt the mode of upsetting squeeze to increase the wall thickness of thin-wall seamless pipe.Since cannot adopt the mode of upsetting squeeze to increase wall thickness to thin-wall seamless pipe, we can increase pipe end wall thickness by setting up junction block in light-wall pipe outside.
Currently cannot retrieve any effective method or technique can solve this class problem.In order to solve this class problem, need to design a kind of thin-wall seamless pipe that can make and bear larger load, and the tube wall method and apparatus that can not produce distortion or distortion increases the wall thickness of thin-wall seamless pipe end tube wall.
Summary of the invention
The invention provides a kind of method and apparatus that is used to thin-wall seamless pipe end pipe wall thickening, it merges the correlation techniques such as Pressure Welding and soldering, can realize and make thin-wall seamless pipe bear larger load, and tube wall can not produce distortion or distortion, effectively increase the object requirement of wall thickness, and can reach higher working strength, well solve the problem that traditional hot pier mode easily causes light-wall pipe tube wall fold and torsional deformation.
For reaching above object, the technical solution used in the present invention is: a kind of method that is used to thin-wall seamless pipe end pipe wall thickening, by fitting sleeve on thin-wall seamless pipe, solder layer and the thin-wall seamless pipe outer wall interference fit of joint inner side, with load coil, the position of required seam is heated, make temperature rise to the fusing point of scolder, then by forcing press butt joint, axially load, make joint tube wall thickening, axial load is converted into load radially, under Radial Loads, the scolder molecule of melting can diffuse into thin-wall seamless pipe outer wall well, finally realize combining closely of joint and thin-wall seamless pipe, a kind of device that is used to thin-wall seamless pipe end pipe wall thickening, described device comprises: end heating device, charger, light-wall pipe clamping and fixing device and control system, wherein, described end heating device comprises internal induction heater coil, outer load coil, described charger comprises forcing press, annular push pedal, plug, described light-wall pipe clamping and fixing device comprises fixed dam, locking nut, described control system comprises data handling system, pressure sensor, pressure data acquisition module, temperature sensor, temperature data acquisition module, thin-wall seamless pipe is by the through hole at fixed dam middle part, light-wall pipe end is exposed at fixed dam outside, the required fitting sleeve installing additional is at thin-wall seamless tube end, in, outer load coil is located at light-wall pipe pipe end outer surface and joint solder layer inner surface joint, outer load coil is detachable, internal induction heater coil is embedded in plug, when loading, plug plays a supportive role to light-wall pipe tube wall, fixed dam and locking nut are used in conjunction with, be used for fixing seamless thin wall pipe, described pressure sensor is located at annular push pedal and is engaged place with joint left side, pressure sensor connects pressure data acquisition module outward, described temperature sensor is located at joint right side and is engaged place with fixed dam, temperature sensor connects temperature data acquisition module outward, pressure, temperature data acquisition module transfers data to data handling system.
Further, described end heating device comprises internal induction heater coil, outer load coil, and internal induction heater coil can take out with plug from light-wall pipe, and after unloading, outer load coil detachably gets off.
Further, described fixed dam left side is square baffle plate, the transverse load applying for bearing pressure machine, and slotted tapered thread is established on right side, is used in conjunction with, for fixing thin-wall seamless pipe, to prevent that it from moving horizontally with described locking nut.
Further, described pressure sensor is located at annular push pedal and is engaged place with joint left side, forcing press is that joint axis is to loading by annular push pedal, pressure sensor records load, by pressure data acquisition module, data are sent to data handling system, data handling system and then controlled pressure machine, thus reach the effect of pressurize.
Further, described temperature sensor is located at joint right side and is engaged place with fixed dam, temperature for downhole joint solder layer, temperature sensor records the temperature of solder layer, by temperature data acquisition module, data are sent to data handling system, data handling system and then control inside and outside load coil, thus reach the effect of heating and thermal insulation.
Further, the tube wall of described joint is divided into inside and outside two-layer, and internal layer is solder layer, and the fusing point of internal layer scolder is lower than cladding material, the internal diameter of joint and thin-wall seamless pipe external diameter interference fit.
Further, the size of described plug matches with light-wall pipe inwall size, and mandrel material is high temperature resistant, and has certain resistance to pressure, at the tube wall to light-wall pipe, plays a supportive role.
The present invention has following beneficial effect: the method and apparatus that is used to thin-wall seamless pipe end pipe wall thickening of the present invention, its advantage is, the method and apparatus of the present invention's design has merged the technology such as Pressure Welding and soldering, efficiently solve thin-wall seamless tube wall thinner, cannot bear the problem of large load, the problems such as tube wall fold and torsional deformation have been avoided producing in tube wall Thickening Process, and can make it reach higher working strength, the unvanquishable defect of technology before having solved well.
Accompanying drawing explanation
Fig. 1 is the locations of structures schematic diagram of each parts of the present invention.
Fig. 2 is fixed dam structural representation.
Fig. 3 is mandrel structure schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, 2, 3, device of the present invention specifically comprises: end heating device, charger, light-wall pipe clamping and fixing device and control system.
End heating device comprises internal induction heater coil 11 and outer load coil 10, internal induction heater coil 11 embeds plug 12 inside, outer load coil 10 is enclosed within joint 4 outsides and is close to fixed dam 9, inside and outside load coil (11,10) is joint 4 and thin-wall seamless pipe 8 joint heating simultaneously, makes the solder layer of joint 4 reach molten condition.
Charger comprises forcing press 1, annular push pedal 13 and plug 12, annular push pedal 13 is fixed in the push pedal of forcing press 1, can under the dynamic action of forcing press 1, for joint 4, axially load, plug 12 is located at light-wall pipe inside, the size of plug 12 matches with the lumen size of thin-wall seamless pipe 8, when forcing press 1 butt joint 4 loads, the tube wall of 12 pairs of thin-wall seamless pipes 8 of plug plays a supportive role, align in plug 12 right sides of middle part boss and the left side of light-wall pipe, after unloading, first plug 12 is extracted out from light-wall pipe, dismantle again soldered thin-wall seamless pipe 8 and joint 4.
Light-wall pipe clamping and fixing device comprises fixed dam 9 and locking nut 7, fixed dam 9 left sides are square baffle plate, the right side of joint 4 is adjacent to the left side of fixed dam 9, the transverse load being applied by fixed dam 9 bearing pressure machines 1, slotted tapered thread is established on fixed dam 9 right sides, be used in conjunction with described locking nut 7, for fixing thin-wall seamless pipe 8, to prevent that it from moving horizontally.
Control system comprises data handling system 14, pressure sensor 3, pressure data acquisition module 2, temperature sensor 6 and temperature data acquisition module 5, pressure sensor 3 is located at annular push pedal 13 and is engaged place with joint 8 left sides, in loading procedure, pressure sensor 3 records load in real time, by pressure data acquisition module 2, data are sent to data handling system 14, data handling system 14 and then controlled pressure machine 1, thereby reach the effect of loading and pressurize, temperature sensor 6 is located at joint 4 right sides and is engaged place with fixed dam 9, temperature sensor 6 records the temperature of solder layer, by temperature data acquisition module 5, data are sent to data handling system 14, in data handling system 14 and then control, outer load coil (11, 10), thereby reach the effect of heating and thermal insulation.
Of the present invention be used to the method for thin-wall seamless pipe end pipe wall thickening and the implementation of device as follows: thin-wall seamless pipe 8 right-hand members are inserted in the through hole of fixed dams 9, make thin-wall seamless pipe 8 left ends need welding position to expose fixed dam 9, plug 12 is inserted to thin-wall seamless pipe 8, alignd in plug 12 right sides of middle part boss and the left side of light-wall pipe, rotational lock nut 7, it is moved to the left, tighten up at fixed dam 9 fluting places, right side, thin-wall seamless pipe 8 is fixed, outer load coil 10 is enclosed within joint 4 outer wall one sides, joint 4 and thin-wall seamless pipe 8 interference fit, first by joint 4 preheatings, then joint 4 is enclosed within to thin-wall seamless pipe 8 left ends, the right-hand member of joint 4 and outer load coil 10 is all near the left side of fixed dam 9, in, outer load coil (11, 10) start heating, when temperature reaches the fusing point of joint 4 solder layers, forcing press 1 starts butt joint 4 and axially loads, reach and set after load, pressure-maintaining and heat-preservation a period of time, the pipe wall material of scolder and thin-wall seamless pipe 8 is fully spread, stop after heating, continue pressurize a period of time, until thin-wall seamless pipe 8 is completely cooling with joint 4, both are by seam, then unload pickup.
Certainly, above is only concrete exemplary applications of the present invention, and protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all within the present invention's scope required for protection.
Claims (8)
1. a method that is used to thin-wall seamless pipe end pipe wall thickening, it is characterized in that, joint (4) is enclosed within on thin-wall seamless pipe (8), solder layer and thin-wall seamless pipe (8) the outer wall interference fit of joint (4) inner side, with load coil, the position of required seam is heated, make temperature rise to the fusing point of scolder, then by forcing press (1) butt joint (4), axially load, make joint (4) tube wall thickening, axial load is converted into load radially, under Radial Loads, the scolder molecule of melting can diffuse into thin-wall seamless pipe (8) outer wall well, finally realize combining closely of joint (4) and thin-wall seamless pipe (8), a kind of device that is used to thin-wall seamless pipe end pipe wall thickening, it is characterized in that, described device comprises: end heating device, charger, light-wall pipe clamping and fixing device and control system, wherein, described end heating device comprises internal induction heater coil (11), outer load coil (10), described charger comprises forcing press (1), annular push pedal (13), plug (12), described light-wall pipe clamping and fixing device comprises fixed dam (9), locking nut (7), described control system comprises data handling system (14), pressure sensor (3), pressure data acquisition module (2), temperature sensor (6), temperature data acquisition module (5), thin-wall seamless pipe (8) is by the through hole at fixed dam (9) middle part, light-wall pipe end is exposed at fixed dam (9) outside, the required joint installing additional (4) is enclosed within thin-wall seamless pipe (8) end, in, outer load coil (11, 10) be located at light-wall pipe pipe end outer surface and joint (4) solder layer inner surface joint, outer load coil (10) is detachable, internal induction heater coil (11) is embedded in plug (12), when loading, plug (12) plays a supportive role to light-wall pipe tube wall, fixed dam (9) is used in conjunction with locking nut (7), be used for fixing seamless thin wall pipe (8), described pressure sensor (3) is located at annular push pedal (13) and is engaged place with joint (4) left side, the outer pressure data acquisition module (2) that connects of pressure sensor (3), described temperature sensor (6) is located at joint (4) right side and is engaged place with fixed dam (9), the outer temperature data acquisition module (5) that connects of temperature sensor (6), pressure, temperature data acquisition module (2, 5) transfer data to data handling system (14).
2. install as claimed in claim 1, it is characterized in that, described end heating device comprises internal induction heater coil, outer load coil (11,10), internal induction heater coil (11) can take out with plug (12) from light-wall pipe, after unloading, outer load coil (10) detachably gets off.
3. install as claimed in claim 1, it is characterized in that, described fixed dam (9) left side is square baffle plate, the transverse load applying for bearing pressure machine (1), slotted tapered thread is established on right side, be used in conjunction with described locking nut (7), for fixing thin-wall seamless pipe (8), to prevent that it from moving horizontally.
4. as described in aforementioned any one claim, install, it is characterized in that, described pressure sensor (3) is located at annular push pedal (13) and is engaged place with joint (4) left side, forcing press (1) is that joint (4) axially loads by annular push pedal (13), pressure sensor (3) records load, by pressure data acquisition module (2), data are sent to data handling system (14), data handling system (14) and then controlled pressure machine (1), load and the effect of pressurize thereby reach.
5. as described in aforementioned any one claim, install, it is characterized in that, described temperature sensor (6) is located at joint (4) right side and is engaged place with fixed dam (9), temperature for downhole joint (4) solder layer, temperature sensor (6) records the temperature of solder layer, by temperature data acquisition module (5), data are sent to data handling system (14), data handling system (14) and then control inside and outside load coil (11,10), thus reach the effect of heating and thermal insulation.
6. as described in aforementioned any one claim, install, it is characterized in that, the tube wall of described joint (4) is divided into inside and outside two-layer, and internal layer is solder layer, the fusing point of internal layer scolder is lower than cladding material, the internal diameter of joint (4) and thin-wall seamless pipe (8) external diameter interference fit.
7. as described in aforementioned any one claim, install, it is characterized in that, the size of described plug (12) matches with light-wall pipe inwall size, and plug (12) material is high temperature resistant, and there is resistance to pressure, when fixedly light-wall pipe is with loading, the tube wall of light-wall pipe is played a supportive role.
8. a method and apparatus that is used to thin-wall seamless pipe end pipe wall thickening, is characterized in that, adopts method or device described in above-mentioned any one claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645230.9A CN103639609B (en) | 2013-12-05 | 2013-12-05 | A kind of method and apparatus for thin-wall seamless pipe end upsetting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310645230.9A CN103639609B (en) | 2013-12-05 | 2013-12-05 | A kind of method and apparatus for thin-wall seamless pipe end upsetting |
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| Publication Number | Publication Date |
|---|---|
| CN103639609A true CN103639609A (en) | 2014-03-19 |
| CN103639609B CN103639609B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310645230.9A Active CN103639609B (en) | 2013-12-05 | 2013-12-05 | A kind of method and apparatus for thin-wall seamless pipe end upsetting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220152716A1 (en) * | 2020-11-19 | 2022-05-19 | Ting-Jui Wang | Soldering component and method of assembling soldering component to object |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001360B (en) * | 2016-06-16 | 2018-01-02 | 上海交通大学 | The progressive upsetting shaping dies of thin-wall part and manufacturing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416995A (en) * | 2002-11-06 | 2003-05-14 | 天津大学 | Pipe butt welding method and butt welded pipe |
| CN102151974A (en) * | 2011-04-28 | 2011-08-17 | 华南理工大学 | Dissimilar metal connection method for copper-aluminum pipe |
| CN102581414A (en) * | 2012-03-16 | 2012-07-18 | 李明雨 | Method for brazing copper aluminum tubes without aid of brazing flux |
-
2013
- 2013-12-05 CN CN201310645230.9A patent/CN103639609B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416995A (en) * | 2002-11-06 | 2003-05-14 | 天津大学 | Pipe butt welding method and butt welded pipe |
| CN102151974A (en) * | 2011-04-28 | 2011-08-17 | 华南理工大学 | Dissimilar metal connection method for copper-aluminum pipe |
| CN102581414A (en) * | 2012-03-16 | 2012-07-18 | 李明雨 | Method for brazing copper aluminum tubes without aid of brazing flux |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220152716A1 (en) * | 2020-11-19 | 2022-05-19 | Ting-Jui Wang | Soldering component and method of assembling soldering component to object |
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| CN103639609B (en) | 2016-04-27 |
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