CN109396227A - A kind of induction heating syphon manufacturing method - Google Patents
A kind of induction heating syphon manufacturing method Download PDFInfo
- Publication number
- CN109396227A CN109396227A CN201811547394.7A CN201811547394A CN109396227A CN 109396227 A CN109396227 A CN 109396227A CN 201811547394 A CN201811547394 A CN 201811547394A CN 109396227 A CN109396227 A CN 109396227A
- Authority
- CN
- China
- Prior art keywords
- induction heating
- pipe
- manufacturing
- hydraulic device
- bend pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
- B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
- B21D7/162—Heating equipment
Abstract
A kind of induction heating syphon manufacturing method disclosed by the invention, includes the following steps: step 1: the flawless pipe chosen is placed on bending machine；Step 2: lasting heating is carried out using to be curved curved end of the induction heating apparatus to base pipe, heating temperature is 930-1030 DEG C；Step 3: in initial phase, base pipe is promoted with the speed of 70-100mm/min by hydraulic device and is walked, this process continues 0.5-1min；Step 4: the speed of hydraulic device is adjusted to 35-60mm/min and continues base pipe promoting walking.The present invention is during production, the initial phase of hydraulic device uses faster push system speed, initial phase biggish internal force for overcoming bend pipe to produce, the internal force is eliminated for the influence inside equipment and bend pipe, guarantee the service life of equipment and the Forming Quality of bend pipe, in the normal stage, hydraulic device uses normal push system speed, the stable molding for guaranteeing bend pipe, avoids the occurrence of defect.
Description
Technical field
The present invention relates to bend pipe manufacturing technology field more particularly to a kind of induction heating syphon manufacturing methods.
Background technique
Bend pipe is one of important composition component of pipe-line, and long-distance transmission pipeline needs a large amount of bend pipe, curved
Pipe is also that more harsh one of structural member is carried in pipeline, and in the pipeline for being completed operation, pipeline related with bend pipe is lost
Effect accident occupies quite high ratio in entire pipeline accident, and the comprehensive quality of bend pipe is to restrict pipeline safety even running
One of bottleneck.
Induction heating syphon manufacturing process is one kind the most cost-effective, working principle in existing various bent tube techniques
Are as follows: shown in referring to Fig.1, pipe 1 to be processed is placed in the slideway being made of roller 2, induction is provided on the right side of slideway
Heating device 3 is provided with the hydraulic device 4 for pushing pipe 1 to the right on the left of slideway, at work, by pipe 1
Right side is sleeved in swing arm 5, and then induction heating apparatus 3 heats the right end of pipe 1, and hydraulic device 4 pushes away to the right therewith
Dynamic pipe 1, the right side of pipe 1 carries out circular arc bending under the action of swing arm 5, the manufacturing process of bend pipe is completed, in this process
In, sufficiently borrowing induction heating has the characteristics that heating is rapid, heating tape is narrow, fast cooling, and induction heating syphon method is more other
Method has many advantages, such as ovality is small, wall thickness reduction is minimum and bending radius is easy to adjust, using mid-frequency induction heating, avoids
Bend pipe chimb tube wall tension is thinned when the forming of traditional bent tube technique, concave edge wall compression thickens and caused by bend pipe wall unevenness
Even phenomenon.
But its there is also certain disadvantages: in the molding initial phase of pipe 1, since pipe 1 is in the work of hydraulic device 4
With it is lower it is unexpected carry out deformation, it is all instantaneous with one at this time not only to pipe 1 itself, or for equipment itself
Biggish power is easy to impact equipment to influence the quality of bend pipe so that equipment causes to damage.
Summary of the invention
In place of avoiding the deficiencies in the prior art, a kind of induction heating syphon manufacturing method is provided,
To effectively solve the shortcomings of the prior art.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of induction heating syphon manufacturing method, including such as
Lower step:
Step 1: the flawless pipe chosen is placed on bending machine, and pipe uses X65 steel；
Step 2: lasting heating, heating temperature 930- are carried out using to be curved curved end of the induction heating apparatus to base pipe
1030℃；
Step 3: in initial phase, being promoted base pipe with the speed of 70-100mm/min by hydraulic device and walked, this mistake
Cheng Chixu 0.5-1min；
Step 4: the speed of hydraulic device is adjusted to 35-60mm/min and continues to promote base pipe into walking, this process continues
To elbow curvature is finished, brake forming is 90 ° of bend pipes；
Step 5: curved good bend pipe being removed, is heat-treated, specifically, bend pipe is put into natural gas heat-treatment furnace,
Temperature in furnace is improved to 400 DEG C, the temperature in furnace is then risen to by (500-600) DEG C with the speed of 150-200 DEG C/h again
± 15 DEG C, at this temperature, constant temperature keeps 40min, is then cooled to 400 DEG C with 200 DEG C/h speed below, comes out of the stove, and completes
Heat treatment process.
Further, in the step 3 and step 4, water-spraying control, cooling water pressure are carried out to the pipe after heating
For (0.05-0.12) ± 10%MPa.
Further, the induction heating apparatus is intermediate frequency induction heating device.
Further, the width of heating tape provided by the induction heating apparatus is 30-40mm.
Further, the temperature of the cooling water is 20 ± 15 DEG C.
Above-mentioned technical proposal of the invention have the advantages that the present invention during production, hydraulic device
Initial phase uses faster push system speed, and the initial phase biggish internal force for overcoming bend pipe to produce eliminates the internal force pair
Influence inside equipment and bend pipe guarantees the service life of equipment and the Forming Quality of bend pipe, in the normal stage, liquid
Pressure device uses normal push system speed, guarantees the stable molding of bend pipe, avoids the occurrence of defect.
Detailed description of the invention
Fig. 1 is the bend pipe schematic diagram of bending machine in the prior art.
Specific embodiment
Embodiments of the present invention are described in further detail below with reference to embodiment.Following embodiment is for illustrating this
Invention, but cannot be used to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
A kind of induction heating syphon manufacturing method, includes the following steps:
Step 1: the flawless pipe chosen is placed on bending machine, and pipe uses X65 steel；
Step 2: lasting heating, heating temperature 930- are carried out using to be curved curved end of the induction heating apparatus to base pipe
1030℃；
Step 3: in initial phase, being promoted base pipe with the speed of 70-100mm/min by hydraulic device and walked, this mistake
Cheng Chixu 0.5-1min；
Step 4: the speed of hydraulic device is adjusted to 35-60mm/min and continues to promote base pipe into walking, this process continues
To elbow curvature is finished, brake forming is 90 ° of bend pipes；
Step 5: curved good bend pipe being removed, is heat-treated, specifically, bend pipe is put into natural gas heat-treatment furnace,
Temperature in furnace is improved to 400 DEG C, the temperature in furnace is then risen to by (500-600) DEG C with the speed of 150-200 DEG C/h again
± 15 DEG C, at this temperature, constant temperature keeps 40min, is then cooled to 400 DEG C with 200 DEG C/h speed below, comes out of the stove, and completes
Heat treatment process.
In step 3 and step 4, water-spraying control is carried out to the pipe after heating, cooling water pressure is (0.05-
0.12) ± 10%MPa.
Induction heating apparatus is intermediate frequency induction heating device.
The width of heating tape provided by induction heating apparatus is 30-40mm.
The temperature of cooling water is 20 ± 15 DEG C.
During above-mentioned, the initial phase of hydraulic device uses faster push system speed, for overcoming bend pipe to produce
Initial phase biggish internal force, eliminate the internal force for the influence inside equipment and bend pipe, guarantee the service life of equipment
And the Forming Quality of bend pipe, in the normal stage, hydraulic device uses normal push system speed, guarantee the stabilization of bend pipe at
Type avoids the occurrence of defect.
The embodiment of the present invention is given for the purpose of illustration and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
Selecting and describe embodiment is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application
It will be appreciated that the present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (5)
1. a kind of induction heating syphon manufacturing method, which comprises the steps of:
Step 1: the flawless pipe chosen is placed on bending machine, and pipe uses X65 steel；
Step 2: lasting heating, heating temperature 930-1030 are carried out using to be curved curved end of the induction heating apparatus to base pipe
℃；
Step 3: in initial phase, base pipe is promoted with the speed of 70-100mm/min by hydraulic device and is walked, this process is held
Continuous 0.5-1min；
Step 4: the speed of hydraulic device is adjusted to 35-60mm/min and continues to promote base pipe into walking, this process continues to general
Elbow curvature finishes, and brake forming is 90 ° of bend pipes.
2. a kind of induction heating syphon manufacturing method according to claim 1, it is characterised in that: in the step 3 and
In step 4, water-spraying control is carried out to the pipe after heating, cooling water pressure is (0.05-0.12) ± 10%MPa.
3. a kind of induction heating syphon manufacturing method according to claim 1, it is characterised in that: the induction heating apparatus
For intermediate frequency induction heating device.
4. a kind of induction heating syphon manufacturing method according to claim 1, it is characterised in that: the induction heating apparatus
The width of provided heating tape is 30-40mm.
5. a kind of induction heating syphon manufacturing method according to claim 2, it is characterised in that: the temperature of the cooling water
It is 20 ± 15 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547394.7A CN109396227B (en) | 2018-12-18 | 2018-12-18 | Manufacturing method of induction heating bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547394.7A CN109396227B (en) | 2018-12-18 | 2018-12-18 | Manufacturing method of induction heating bent pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109396227A true CN109396227A (en) | 2019-03-01 |
| CN109396227B CN109396227B (en) | 2020-11-03 |
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ID=65460996
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811547394.7A Active CN109396227B (en) | 2018-12-18 | 2018-12-18 | Manufacturing method of induction heating bent pipe |
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| CN (1) | CN109396227B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976663A (en) * | 2021-10-22 | 2022-01-28 | 中国原子能科学研究院 | Method for producing pressure pipe |
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| JP2001293521A (en) * | 2000-04-13 | 2001-10-23 | Babcock Hitachi Kk | Bending apparatus of tube |
| CN101195136A (en) * | 2007-12-26 | 2008-06-11 | 连式雄 | Technique and device for push-making angle fitting by intermediate frequency induction heating |
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| CN103088270A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气集团公司 | Manufacturing method of X70 large-deformation steel fire-bent pipe |
| JP2014182048A (en) * | 2013-03-21 | 2014-09-29 | Dai Ichi High Frequency Co Ltd | Method and device for measuring pipe thickness of metal pipe during bending processing |
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| CN107052079A (en) * | 2017-05-09 | 2017-08-18 | 四川三洲川化机核能设备制造有限公司 | A kind of forming method of the short radius high temperature alloy elbow of heavy caliber thick wall |
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2018
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| CN201664717U (en) * | 2010-01-21 | 2010-12-08 | 江阴市南方管件制造有限公司 | Bending angle control device of induction heated bent pipes |
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| CN103088270A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气集团公司 | Manufacturing method of X70 large-deformation steel fire-bent pipe |
| JP2014182048A (en) * | 2013-03-21 | 2014-09-29 | Dai Ichi High Frequency Co Ltd | Method and device for measuring pipe thickness of metal pipe during bending processing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976663A (en) * | 2021-10-22 | 2022-01-28 | 中国原子能科学研究院 | Method for producing pressure pipe |
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| CN109396227B (en) | 2020-11-03 |
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