CN109433956A - A kind of alignment of Stainless Steel Coil bends the technique that joint prepares snakelike tube bank - Google Patents
A kind of alignment of Stainless Steel Coil bends the technique that joint prepares snakelike tube bank Download PDFInfo
- Publication number
- CN109433956A CN109433956A CN201811178586.5A CN201811178586A CN109433956A CN 109433956 A CN109433956 A CN 109433956A CN 201811178586 A CN201811178586 A CN 201811178586A CN 109433956 A CN109433956 A CN 109433956A
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- China
- Prior art keywords
- tube bank
- snakelike tube
- technique
- stainless steel
- alignment
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- 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
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
-
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- 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
- B21D21/00—Combined processes according to methods covered by groups B21D1/00 - B21D19/00
-
- 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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- 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
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention relates to a kind of Stainless Steel Coils to be straightened, bends joint prepares snakelike tube bank technique, snakelike tube bank preparation field.Described method includes following steps: (1) being first straightened coil pipe at straight tube using straightener, it is ensured that curvature≤2.0mm/m is spare；(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 1-6 revs/min of spindle speed of bending, send 0.1-60 ms/min of pipe speed, two-sided bend to get snakelike tube bank is carried out under conditions of technique torque 10000NM.Coil pipe is first straightened by the present invention, then it is bent using bending machine, the method for preparing coiled pipe instead of traditional welding, not only considerably reduce the labor intensity of worker, and preparation efficiency is high, it prepares quality to stablize, welding in traditional handicraft can be overcome to prepare the snakelike tube bank problem well.
Description
Technical field
The present invention relates to snakelike tube bank preparation field more particularly to a kind of alignment of Stainless Steel Coil, bend joint preparation snake
The technique of shape tube bank.
Background technique
Coil heat exchanger is to bend to required shape as needed by metal or non-metal tube, such as round, spiral shape
With long coiled pipe.It is a kind of heat exchange equipment occurred earliest, has many advantages, such as that structure is simply and easy to operate.Coiled pipe mostly with
Metal pipe turns around, or is connected and formed with straight tube by elbow, pipe fitting, may be made as the snake for being suitble to distinct device shape need
Pipe.Be immersed in when use fill be heated or the container of cooled medium in, two kinds of fluids exchange heat pipe is inside and outside respectively.
Its feature: structure is simple, cheap, and operation sensibility is smaller, and pipe can bear biggish fluid medium pressure.
Currently, evaporating cold production, usually there are two types of modes with tube bank production: first way is to adopt in equipment manufacture industry
Scale pipe is purchased, using bending machine bend pipe, and is welded.The second way: buying scale pipe and elbow, and welded.But
Both modes there are the problem of are as follows: by taking the tube bank of 86 meters of Ф 25 × 2mm specifications as an example, if made of first way,
Every group of tube bank has a weld bond, if made of the second way, 30 weld bonds of every group of tube bank, both modes are not only worked by force
Degree is big, and crackle and other issues is easy to appear at welding junction, needs to carry out radiographic inspection to each weld bond.Therefore, have
Necessity studies a kind of new technique for preparing snakelike tube bank.
Summary of the invention
For above-mentioned problems of the prior art, the present invention intends to provide a kind of Stainless Steel Coil alignment, bend
Combine the technique for preparing snakelike tube bank.Coil pipe is first straightened by the present invention, is then bent using bending machine, instead of traditional
The method that welding prepares coiled pipe not only considerably reduces the labor intensity of worker, but also preparation efficiency is high, and preparation quality is steady
It is fixed, welding in traditional handicraft can be overcome to prepare the snakelike tube bank problem well.
An object of the present invention, which is to provide a kind of alignment of Stainless Steel Coil, bends joint prepares snakelike tube bank technique.
The snakelike application for restraining technique is prepared the second object of the present invention is to provide Stainless Steel Coil alignment, bend joint.
For achieving the above object, the invention discloses following technical proposals:
Firstly, the invention discloses a kind of Stainless Steel Coils to be straightened, bends joint prepares snakelike tube bank technique, including as follows
Step:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 1-6 revs/min of spindle speed of bending, send pipe
0.1-60 ms/min of speed, technique torque carries out two-sided bend to get snakelike tube bank under conditions of being not more than 10000NM.
Preferably, in step (1), the material of the coil pipe is S30408.
Preferably, in step (1), the crossing ellipsization degree of the coil pipe is 0.1-0.5mm, preferably 0.3-0.5mm.
Preferably, in step (2), the angle of bend for bending back elbow is 180 °.
Preferably, in step (2), the radius of the crooked position of the snakelike tube bank is 40-60mm, preferably 50mm.
Preferably, in step (2), the specification of the snakelike tube bank is 86 meters × Ф 25mm × (2-4) mm, preferably 86 meters
×Ф25mm×2mm。
The coil pipe for the S30408 material that the present invention uses is easily created in the welding process due to the particularity of ingredient
Brittle martensitic structure is especially easy crystallization at welding bath edge and forms solid-state, and there are a component gradient is very big
Transition zone and diffusion layer are easy to generate bead crack after welding or in use process, not only harsh to welding process requirement,
And usually need to be heat-treated after welding, the preparation process for not only resulting in coiled pipe beam is complicated, and preparation efficiency it is low,
It is unstable quality, at high cost.And when using alignment, bending integrated processes preparation, although above-mentioned welding bring can be overcome to ask
Topic, but bent due to bending process cold conditions, due to needing 180 ° of tube bending, crooked position can generate very big stress and become
Shape easily ruptures, and using the pipe of S30408 material when being bent using bending machine, then it is not in bending section
The problem of position rupture, because the yield tensile ratio of S30408 material is very low (0.4 or so), it means that this material is under external force
The ability for resisting rupture is prominent, is suitable for the production of crooked position just, and actual tests through the invention are in use
When the coil pipe of S30408 material is bent, even if in 180 ° of bending of crooked position, it will not be cracked, simultaneously as
The characteristics of S30408 material low yield strength ratio, can be equably plastically deformed, so that curved during crooked position production
The wall thickness of the tube bank of pars convoluta position is more uniform, is not in the mutation of wall thickness, has well solved using direct cold bending technique
Instead of problem when welding procedure.
Secondly, the invention discloses Stainless Steel Coil alignment, bend joint prepare snakelike tube bank technique prepare exchange heat set
Application in standby.
Compared with prior art, the present invention achieves following the utility model has the advantages that coil pipe is first straightened by the present invention, then using curved
Pipe machine is bent, and instead of the method that traditional welding prepares snakelike tube bank, considerably reduces the labor intensity of worker, and
And preparation efficiency is high, preparation quality is stablized.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the schematic diagram of the snakelike tube bank of 86 meters of Ф × 25mm × 2mm specification of the invention.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As described in background, the preparation method not only large labor intensity, but also welding junction of existing snakelike tube bank
Place is easy to appear crackle and other issues, needs to carry out radiographic inspection to each weld bond.Therefore, the invention proposes a kind of stainless
The alignment of steel disk pipe bends the technique that joint prepares snakelike tube bank, further to the present invention now in conjunction with the drawings and the specific embodiments
It is illustrated.
Embodiment 1
A kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, includes the following steps:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 3 revs/min of spindle speed of bending, send Guan Su
30 ms/min are spent, carries out two-sided bend to get snakelike tube bank under conditions of technique torque 8000NM.
In step (1), the material of the coil pipe is S30408.
In step (1), the crossing ellipsization degree of the coil pipe is 0.5mm.
In step (2), the radius of the crooked position of the snakelike tube bank is 50mm.
In step (2), the angle of bend for bending back elbow is 180 °.
In step (2), the total length of the snakelike tube bank is 86 meters, and diameter is Ф 25mm, thickness of pipe 2mm.
Embodiment 2
A kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, includes the following steps:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 6 revs/min of spindle speed of bending, send Guan Su
60 ms/min are spent, carries out two-sided bend to get snakelike tube bank under conditions of technique torque 6000NM.
In step (1), the material of the coil pipe is S30408.
In step (1), the crossing ellipsization degree of the coil pipe is 0.3mm.
In step (2), the radius of the crooked position of the snakelike tube bank is 60mm.
In step (2), the angle of bend for bending back elbow is 180 °.
In step (2), the total length of the snakelike tube bank is 86 meters, and diameter is Ф 25mm, thickness of pipe 4mm.
Embodiment 3
A kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, includes the following steps:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 1 rev/min of spindle speed of bending, send Guan Su
0.1 m/min is spent, carries out two-sided bend to get snakelike tube bank under conditions of maximum technique torque 10000NM.
In step (1), the material of the coil pipe is S30408.
In step (1), the crossing ellipsization degree of the coil pipe is 0.5mm.
In step (2), the radius of the crooked position of the snakelike tube bank is 40mm.
In step (2), the angle of bend for bending back elbow is 180 °.
In step (2), the total length of the snakelike tube bank is 86 meters, and diameter is Ф 25mm, thickness of pipe 2mm.
Embodiment 4
A kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, includes the following steps:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 5 revs/min of spindle speed of bending, send Guan Su
1 m/min is spent, carries out two-sided bend to get snakelike tube bank under conditions of maximum technique torque 7000NM.
In step (1), the material of the coil pipe is S30408.
In step (1), the crossing ellipsization degree of the coil pipe is 0.4mm.
In step (2), the radius of the crooked position of the snakelike tube bank is 50mm.
In step (2), the angle of bend for bending back elbow is 180 °.
In step (2), the total length of the snakelike tube bank is 86 meters, and diameter is Ф 25mm, thickness of pipe 2mm.
Embodiment 5
A kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, includes the following steps:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 2 revs/min of spindle speed of bending, send Guan Su
10 ms/min are spent, carries out two-sided bend to get snakelike tube bank under conditions of maximum technique torque 9000NM.
In step (1), the material of the coil pipe is S30408.
In step (1), the crossing ellipsization degree of the coil pipe is 0.1mm.
In step (2), the radius of the crooked position of the snakelike tube bank is 40mm.
In step (2), the angle of bend for bending back elbow is 180 °.
In step (2), the total length of the snakelike tube bank is 86 meters, and diameter is Ф 25mm, thickness of pipe 3mm.
By test, the crooked position for the snakelike tube bank that embodiment 1-5 is prepared does not have macroscopic obvious crackle, into
One step, also without finding that there is crackle in the inside of crooked position, illustrates alignment of the invention, bends joint after defectoscope detects
The preparation quality for preparing the technique of snakelike tube bank is stablized, and can overcome weldering when welding prepares snakelike tube bank in traditional handicraft well
Crackle and other issues is easy to appear at connection interface.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of alignment of Stainless Steel Coil bends joint and prepares snakelike tube bank technique, it is characterised in that: the method includes as follows
Step:
(1) coil pipe is straightened using straightener into straight tube first, it is ensured that curvature≤2.0mm/m is spare；
(2) then the coil pipe being straightened in step (1) is placed in bending machine, in 1-6 revs/min of spindle speed of bending, send pipe speed
0.1-60 ms/min, two-sided bend to get snakelike tube bank is carried out under conditions of technique torque 10000NM.
2. Stainless Steel Coil as described in claim 1 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (1), the material of the coil pipe is S30408.
3. Stainless Steel Coil as described in claim 1 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (1), the crossing ellipsization degree of the coil pipe is 0.1-0.5mm.
4. Stainless Steel Coil as claimed in claim 3 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (1), the crossing ellipsization degree of the coil pipe is 0.3-0.5mm.
5. Stainless Steel Coil as described in claim 1 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (2), the angle of bend for bending back elbow is 180 °.
6. Stainless Steel Coil as described in claim 1 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (2), the radius of the crooked position of the snakelike tube bank is 40-60mm.
7. Stainless Steel Coil as claimed in claim 6 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (2), the radius of the crooked position of the snakelike tube bank is 50mm.
8. such as claim 1-7 described in any item Stainless Steel Coils alignment bends joint and prepares snakelike tube bank technique, feature
Be: in step (2), the specification of the snakelike tube bank is 86 meters of Ф × 25mm × (2-4) mm.
9. Stainless Steel Coil as claimed in claim 8 alignment bends joint and prepare snakelike tube bank technique, it is characterised in that: walk
Suddenly in (2), the specification of the snakelike tube bank is 86 meters of Ф × 25mm × 2mm.
10. such as claim 1-9 described in any item Stainless Steel Coils alignment bends joint and prepares snakelike tube bank technique and preparing
Application in heat exchange equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178586.5A CN109433956A (en) | 2018-10-10 | 2018-10-10 | A kind of alignment of Stainless Steel Coil bends the technique that joint prepares snakelike tube bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178586.5A CN109433956A (en) | 2018-10-10 | 2018-10-10 | A kind of alignment of Stainless Steel Coil bends the technique that joint prepares snakelike tube bank |
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| Publication Number | Publication Date |
|---|---|
| CN109433956A true CN109433956A (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811178586.5A Pending CN109433956A (en) | 2018-10-10 | 2018-10-10 | A kind of alignment of Stainless Steel Coil bends the technique that joint prepares snakelike tube bank |
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Citations (7)
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|---|---|---|---|---|
| CN101676064A (en) * | 2008-09-16 | 2010-03-24 | 阿尔斯通技术有限公司 | Method for producing and assembling superheater coil tubes of steam generators |
| CN202377433U (en) * | 2011-12-23 | 2012-08-15 | 青岛营上电器有限公司 | Special-pipe evaporator forming device |
| CN105414278A (en) * | 2015-12-16 | 2016-03-23 | 珠海格力电器股份有限公司 | Automatic coiler |
| CN106270062A (en) * | 2016-09-26 | 2017-01-04 | 扬州三丰新能源科技有限公司 | A kind of coil bend molding apparatus and technique |
| CN106403683A (en) * | 2016-12-02 | 2017-02-15 | 江苏万宝科技发展有限公司 | Coil for closed cooling tower heat radiator and manufacturing method of coil |
| CN207254989U (en) * | 2017-09-11 | 2018-04-20 | 温州凯唐电子科技有限公司 | A kind of refrigerator refrigeration system coil pipe processing unit (plant) |
| CN108526344A (en) * | 2018-04-10 | 2018-09-14 | 安徽新富新能源科技有限公司 | A kind of electric vehicle cooling coil bending equipment and bending technique |
-
2018
- 2018-10-10 CN CN201811178586.5A patent/CN109433956A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676064A (en) * | 2008-09-16 | 2010-03-24 | 阿尔斯通技术有限公司 | Method for producing and assembling superheater coil tubes of steam generators |
| CN202377433U (en) * | 2011-12-23 | 2012-08-15 | 青岛营上电器有限公司 | Special-pipe evaporator forming device |
| CN105414278A (en) * | 2015-12-16 | 2016-03-23 | 珠海格力电器股份有限公司 | Automatic coiler |
| CN106270062A (en) * | 2016-09-26 | 2017-01-04 | 扬州三丰新能源科技有限公司 | A kind of coil bend molding apparatus and technique |
| CN106403683A (en) * | 2016-12-02 | 2017-02-15 | 江苏万宝科技发展有限公司 | Coil for closed cooling tower heat radiator and manufacturing method of coil |
| CN207254989U (en) * | 2017-09-11 | 2018-04-20 | 温州凯唐电子科技有限公司 | A kind of refrigerator refrigeration system coil pipe processing unit (plant) |
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Application publication date: 20190308 |