CN101983109A - Production-optimized method for producing a multilayered tube - Google Patents
Production-optimized method for producing a multilayered tube Download PDFInfo
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- CN101983109A CN101983109A CN2009801055969A CN200980105596A CN101983109A CN 101983109 A CN101983109 A CN 101983109A CN 2009801055969 A CN2009801055969 A CN 2009801055969A CN 200980105596 A CN200980105596 A CN 200980105596A CN 101983109 A CN101983109 A CN 101983109A
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- layer
- layer material
- piping
- pipeline
- edge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/154—Making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
- B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
- B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Metal Extraction Processes (AREA)
Abstract
Method for producing a multilayered tube (5) with the aid of a sheet-metal forming machine, in which individual layers of material (1, 2) that are to be combined to form the multilayered tube (5) are laid one on top of the other, wherein at least one of the layers of material (1) consists of more than one laid element (1a, 1b), after that a first connection (3a, 3b) respectively between the peripheral elements of the lying layer of material (1a, 1b) and the neighbouring layer of material (2) is created, the multilayered material produced in this way is formed into the tube (5) and, as it is being formed, the still freely mutually displaceable edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) move freely towards each other as the forming operation progresses, on account of the different circumferential lengths of the inner tube (1a, 1b) and the outer tube (2), then, after the forming process has progressed to a certain point, these edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) that are moving towards each other come together, and then the multilayered tube (5) is brought into its final form by means of the sheet-metal forming machine, wherein, during this final forming, the edges (4a, 4b) of the elements (1a, 1b) of the lying layer of material (1a, 1b) can then no longer move freely towards each other, as a result of which the respective layer of material (1a, 1b) acting as the inner tube is pressed with force-fitting engagement into the respective layer of material (2) acting as the outer tube.
Description
Technical field
The present invention relates to the optimization method that a kind of multi-layer piping is made.Multi-layer piping is preferably under the high condition of corrosivity and abrasiveness and uses.
Background technology
Corrosivity fixing pressurized tank or pressure pipeline can reduce production costs by using multi-layer piping, produce firm structure by corresponding layer material.This will partly realize by the pressure-bearing on the stable outer tube (for example, fine sand construction(al)steel) of the fixing interior pipe (for example, acidproof antirust iron) of a thin corrosivity and fixed pressure.Can reduce the consumption of iron and most of the necessary iron that consumes thus greatly also can transfer on the lower-cost material.
The fixing pipeline of abrasiveness can reach fixing credit rating by using multi-layer piping (having mechanical type connects) because can not be separately or the material (for example, the iron of high hardening high-stability) that is difficult to form pipeline can be used as the internal layer use.
Other combination of materials may be diversified, and the property capable of being combined of material is limited by the problem of following improvement technology only in principle.
In the manufacture process of pipe box, have following difference,
-comprehensively metallurgical connection the (this just requires to use gold-plated thin plate as the outlet semi-finished product), and
-mechanical type connects (i.e. friction connects) internal layer and outer and they are at the weld at thin plate edge preferably between interior pipe and outer tube.
The gold-plated connecting plate that two kinds of different (iron) materials of use form in the multi-layer piping that is connected by metallurgy between by the metallic plate multi-layer piping layer that preferably iron plate is made is as the outlet semi-finished product.
According to background technology, shortcoming of the present invention is to export semi-finished product and the high flow rate of the final products made thus on the one hand, be on the other hand to export semi-finished product owing in the world very limited throughput lack enough availabilities.In addition, the share of improved material is restricted by this way.Therefore, when the fixing iron of wearing and tearing can not or be difficult to weld owing to its high carbon component, just do not re-use the fixing iron of certain wearing and tearing as internal layer.
In the multi-layer piping that mechanical type connects, a plurality of preferably two pipelines of finishing are used as the outlet semi-finished product according to old technology status.Next this method is illustrated (understanding specific embodiment under the situation of multilayer accordingly) according to the example of two pipelines:
-two ready-made pipelines have to be cooperated by combined material accurately to be finished and each other can frictional impact, and wherein this external pipe is certainly than the stretching, extension boundary height of this internal pipeline.
-by expansion (mechanical type-promptly by means of an expansion towards tool-or by fluid pressure, the pipeline that overlaps each other at last by around punch die squeeze in the outer tube), internal pipeline is pressed in the outer tube under the resilient expansion of outer tube.After expansion force is measured and is disappeared, outer tube since high resilience under the effect of power, be looped around in around the pipe.
-last two kinds of materials weld at front edge.
Be that according to background technology shortcoming of the present invention outer tube stretches the boundary height than interior pipe, conclusive strength can stretch and outer tube has necessary screen resilience because interior pipe lacks.So unfavorable especially, because high fixed material-particularly high fixed iron-, they are best for the abrasiveness fixed-piping of pipeline internal layer, have height even higher stretching, extension boundary and therefore no longer suitable for this method.
Wherein, ensuing method is open in patent document WO2006/066814A1, and this method no longer has the manufacturing of above-mentioned shortcoming and multi-layer piping and finishes by means of a curved Kun machine with the mechanical connection between the layer material.Wherein,
The layer material of-combination is overlapping to be placed to independent multi-layer piping, and
-the multilayer material that causes like this forms a multi-layer piping by means of this roller machine, the final stage of pipeline moulding in the roller machine wherein, and the layer material of pipe is being extruded under the effect of power among another layer material as outer tube in conduct.
By means of this method, multi-layer piping just can manufacturedly go out not have roll and/or the gold-plated semi-finished product of explosion, also no longer be subjected on the other hand layer that the manufacturing according to above-mentioned background technology multi-layer piping causes with layer between the restriction that is connected of friction mechanism.
The gold-plated half-finished use of roll and/or explosion can be avoided by the following method, at first one of first connection between the layer material-promptly weld-finish and between the pipeline shaping period in the roller machine, be extruded under the effect of the layer material of pipe by the connection between the layer material of a continuation-after a fixing forming step is implemented-in conduct among another layer material as outer tube in power, and in outer tube, keep friction connection and this multi-layer piping to expand by this way, just can not occur the shortcoming that this extended method is enumerated again.
Same this method has the shortcoming of production technology aspect, between the pipeline shaping period in the roller machine, the connection of finishing after a fixing forming step between the layer material of a continuation is necessarily, generally is a welding.Necessaryly for this connection is, for above-mentioned two layer materials are connected to each other in follow-up place and the pipeline moulding is interrupted.This connection be removed and be finished to also uncompleted pipeline must from the roller machine, normally uses this welding sealing.The part that can select to seal during this period in the roller machine is welded.The pipeline that has seam enters in the roller machine once more, carries out complete process there.The timeliness of such action is very urgent and have an i.e. production loss of huge shortcoming.
A kind of method is also disclosed in patent document WO2006/066814A1, wherein
The layer material of-combination is overlapping to be placed to independent multi-layer piping, one of them layer material as outer tube has formed a basic thin plate, this thin plate almost is along two long limit or abreast on one side, preferably Han Jie collision edge reveals, and the layer material of this horizontal is placed between described collision edge freely
-the multilayer material that causes like this forms a multi-layer piping by means of this roller machine, wherein should be stuck between the described collision edge and the final stage of pipeline moulding in the roller machine as layer material of interior pipe, the layer material of pipe be extruded under the effect of power among the into described layer material as outer tube in the described conduct.
According to the specific embodiment among the patent document WO2006/066814A1, such layer material-particularly high fixed iron-be used as internal layer, this material can not or just be difficult to welding.Equally the layer material that uses as interior pipe between the pipeline shaping period in the roller machine since the effect of power be extruded into described as the layer material of outer tube in and keep friction to connect in the outer tube and do not need one as weld connection.Therefore in the roller machine, do not need in the pipeline forming process it is pressed for time and consume high interruption.However, also there is shortcoming in this Method Of Accomplishment, described pipeline internal layer is not exclusively inwardly closed, because this pipeline internal layer its perimeter is to form by the collision edge on the promptly outside layer material of placing of basic thin plate, this just causes the advantageous effect of this pipeline internal layer such as lasting corrosion resistance and abrasiveness may not can to produce.This shortcoming can not be simply solves by a welding in this scope, because between the material at this collision edge and the inner layer material is welded to connect an incomplete qualified welding of going to avoid between skin and the internal layer in this method.
Summary of the invention
Purpose of the present invention is exactly the manufacture method that an a kind of multi-layer piping is provided according to the background technology among the patent document WO2006/066814A1, and this method neither need interrupt removing to connect layer material in the pipeline forming process do not need the thin-layered material of extra addition portion yet.
This purpose can reach by a kind of manufacture method of a multi-layer piping by means of a thin plate shaping apparatus according to the present invention, wherein
The layer material of-combination is overlapping to be placed to independent multi-layer piping, and wherein, at least one layer material is made up of the horizontal element more than,
-first connecting and produces between the described edge member of described horizontal layer material and described adjacent layer material then,
-described by the manufacturing of multi-layered sheet material the pipeline moulding and at the movable edge that also is in free state of the element of the layer material of horizontal described in the above-mentioned forming process because the interior pipe girth different with outer tube made moving freely of conforming to forming step,
The edge that moves mutually of the element of-described horizontal layer material runs foul of each other together behind a fixing forming step,
-this multi-layer piping is by means of this thin plate shaping apparatus final molding then, wherein, no longer can move freely between the last shaping period in edge of the element of described horizontal light sheet material, therefore the layer material of pipe is being extruded under the effect of power among another layer material as outer tube in conduct.
According to this method of the present invention, in thin plate shaping apparatus-be that the interruption of roller machine-this pipeline forming process can be avoided by the following method, before the pipeline forming process, the element edge that forms described internal layer after at least two back with it forms described outer field layer material and links together, normally by welding.In the pipeline forming process, for example in the roller machine, the free terminal of described element because internal layer and outer different bending radius (perhaps girth, the same meaning) move mutually and collide at any time each other.At this moment the domes of thin plate have formed pipeline, Peng Zhuan edge no longer flicks each other, but keeps bumping state together, wherein, the smooth edges of a supposition produced one on layer material along with method step constantly carry out the power of grow gradually, this power is pushed towards skin.It should be noted that enforcement, can guarantee to change movable edge freely moment of internal layer thin plate and pile up that the pipeline in the described moulding becomes arch in the place of internal layer and outer ply placement according to method of the present invention.That is to say, the pipeline in this moulding described internal layer and outside the place of ply have a final radius (a limited radius).Major part about this body realized by a sufficient bending before the movable edge of described inner layer element collides each other that preferably this can produce by the suitable measurement and/or the location of this inner layer element.Preferably in edge extent, near the scope the long crack of the pipeline that promptly will seal after a while also can realize by means of the bending that has produced before the layer material of a formation pipeline these (may also will replenish).
Utilize this method, no longer need to interrupt a comprehensive layer material that constitutes by the material of the pipeline internal layer that exists before of the welding of the layer material of this forming process-promptly continue-go to form.
Manufacture method according to a multi-layer piping of the present invention, it is characterized in that, described first connection between this layer material is finished by following method, along long limit of described horizontal layer material or horizontal edge or along a line parallel, or along or be parallel to after the pipeline slit will be connected to each other together.The element of this horizontal can be placed in the mode that its long limit is parallel to the long limit of layer material of underlying, and this not necessarily.Also can place in its vertical mode in long limit.With connecting of following layer material be with the crack that forms or be parallel to the crack that will form and produce along described always.
In this relation, need to prove, when the viewpoint in this piece article is that a connection is along a limit or along a line (in preferably just imagining), therefore same to plan be during along this edge or line in the connection of every kind of mode, whether this connection always along this edge or line or segmented ground along this edge or line or just at an independent point (as pad), promptly on two points-preferably the terminal point of this limit or line-or only just on this edge or this line an independent point exist.
The layer material of pipe profile in finishing the process of multi-layer piping forms an incomplete circle in the described conduct, the element of horizontal layer material that can be by forming the pipeline internal layer after a while covers a part of surface of the layer material that forms pipeline outer-layer after a while and realizes, wherein still be noted that, in the pipeline forming process, its free terminal runs foul of each other and interior pipe is pressed among the outer tube.
Be characterised in that the profile in the multi-layer piping of finishing that pipe works in the described conduct forms the layer material of an incomplete circle at groove of the bottom of this multi-layer piping formation.
After this crack pipeline is finished, after main pipeline forming process finishes, in the roller machine, the connection of a continuation, preferably the welding between the edge that runs foul of each other of the element of the layer material of this layer material and/or described horizontal particularly makes its sealing around the collision edge.Actual forming process also no longer needs to interrupt.Also no longer need to continue to add a layer material internal layer.A simple welding is just enough.Under the situation of the sealing fully of not depending on the collision edge-when mar proof of a needs increases-can predict this welded seal fully.
About this internal layer is pressed to outer field power, open in patent document WO2006/066814A1, comprise wherein by contrast in the present disclosure of the invention, with reference to known geometry and physical relation, use therein have,
DA is the outer dia of outer tube, the mm of unit
SA is the pipe thickness of outer tube, the mm of unit
SI is the pipe thickness of interior pipe, the mm of unit
σ I is the limit of stretch of interior pipe, the N/mm of unit
2
Zs is the percentage of the power of appending
E is a coefficient of elasticity, the N/mm of unit
2
The above-mentioned relation of the major part of the element of described horizontal layer material (forming internal layer afterwards) and first interface between horizontal layer material and contiguous layer material (forming outer afterwards usually)-in patent document WO2006/066814A1, occurred according to the pressure of expection-correspondingly select.The length of outer tube center line is used L here
NfaExpression, formula is as follows:
L
nfa＝(DA-SA)·π
The length of interior pipe center line is used L here
NfiExpression, formula is as follows:
L
nfi＝(DA-2·SA-SI)·π
The transfer at the free thin plate edge of the element of horizontal layer material (forming internal layer afterwards) shows as in 100% pipeline forming degree, uses L here
FvExpression:
L
fv＝L
nfa-L
nfi
Interior pipe reaches the degree of drawing of limit of stretch, uses ε here
StExpression:
The tensile elongation that reaches limit of stretch accordingly is:
L
st＝ε
St·L
nfi·(Z
s+1)
Forming step is used F here
ForExpression, in the free thin plate edge of the element of described horizontal layer material collides mutually-can reach a maximum pressure-be expressed as (numerical value is between 0 and 1):
Shared percentage is:
These are expressed by description below,
DA is the outer dia of outer tube, the mm of unit
SA is the pipe thickness of outer tube, the mm of unit
SI is the pipe thickness of interior pipe, the mm of unit
σ I is the limit of stretch of interior pipe, the N/mm of unit
2
Zs is the percentage of the pulling force that appends
E is a coefficient of elasticity, the N/mm2 of unit
In forming process, in the free thin plate edge of the element of described horizontal layer material (becoming internal layer afterwards) collides mutually, can reach a maximum pressure, pass through following expression:
The moulding mistake that the pulling force of this interpolation will consider that the layer material of wherein said at least one continuation connects in fixing, and with its correction, therefore, pipe is towards the expecting pressure of outer tube in the minimum realization.
In practice, when forming a complete interior pipe by built-in light sheet material and obtaining simultaneously by means of the time according to the enough pressure of the maximum of method of the present invention, after two horizontal, form in the element of internal layer, this horizontal element along after form the layer material of outer tube long side weld connect, and the element of pipe is selected with its size and shape in forming afterwards, make and between its free edge, keep a crack, this crack is closed and two the pipeline forming process only within the specific limits mutually collisions of edges by continuing to finish of collision mutually in the pipeline forming process, promptly form the scope that the limit of stretch of the material of internal layer allows.
Multi-layer piping according to the manufacture method manufacturing of a kind of multi-layer piping of the present invention has formed the multi-layer piping body by described outer tube along the welding of this pipe crack and the welded closed of an interior pipe together.
This layer material links together at the front edge of pipeline, prevents the infiltration of moisture between the layer material that does not comprehensively connect on the metallurgy.
A kind of operating position according to method of the present invention is a double-skin duct constructed in accordance, same the present invention without limits, so also can make basically according to three layers of this methods, four layers and more multi-layered pipeline.
Have a kind of thin plate in the specific embodiments of the invention, preferably sheet metal iron plate is particularly used its element as layer material or layer material.
According to the manufacture method of a kind of multi-layer piping of the present invention, the connection of at least one layer material is welding, and this is very suitable the iron plate preferably for the sheet metal of mentioning before.
As thin plate shaping apparatus is a roller machine, the circular bend machine of one three cylinder for example, an extruding/punch die arrangement, just as disclosed UOE pipeline forming method in background technology (referring to UOE method: Hiersig, Heinz M., machinery architectural discipline dictionary, Heidelberg 1997, S.704f. index terms "
-Gro β rohrberstellung ") or to also have so-called J CO pipeline forming method also be suitable.It should be noted that since the limit of stretch of internal layer and cladding material concern that layer material pressure each other can weaken the time, according to method-combination of materials of the present invention-may be abandoned in the final step of expansion.
In the JCO method, the moulding by the following method of this pipeline, this thin plate forms " J " shape of a level by means of a diagonal brace in a plane, form " C " of a level then.Just as in the UOE method, form " O " shape then.
Because according to method of the present invention, in the pipeline forming process of reality, no longer interrupt the finishing of connection of a continuation between layer material, so method of the present invention can become a production method continuously, wherein, combination layer material or its element, unclamp since a limit of rolling and place continuously and be linked together continuously, preferably weld together, wherein pipeline forming process is subsequently also proceeded, utilize a kind of forming method as thin plate shaping apparatus, this method forms a crannied pipeline by the layer material of continuous overlapping placement.The forming method of this formation pipeline is open in background technology, has the content of the open part of description and this piece article also it to be comprised wherein in patent document US3327383.
Description of drawings
To at length set forth specific embodiment with reference to the accompanying drawings below, wherein,
Fig. 1 is the overlap each other perspective diagrams of the combination layer material that is placed to multi-layer piping of two of seeing from the top of a width of cloth,
Fig. 2 be one according to manufacture method of the present invention, promptly in the step of this method, the profile of a front edge in a still uncompleted multi-layer piping, wherein here multilayer material is manufactured into pipeline by thin plate shaping apparatus, the edge of the element of two horizontal can move freely each other
Fig. 3 be one according to manufacture method of the present invention, promptly in the step of this method, the profile of a front edge in an equally still uncompleted multi-layer piping is wherein behind a fixing forming step, two free edges by the element of horizontal can be run into mutually
Fig. 4 is a completed multi-layer piping internal layer and outer total schematic diagram,
Fig. 5 is a completed multi-layer piping internal layer and outer detailed view in the welding scope,
Fig. 6 is a continuous pipeline forming process schematic diagram according to the foregoing principle of the present invention, and in this process, described combination layer material or its element be XianCheng's web-like separately, launch then and placement continuously each other,
Fig. 7 is one and arranges exit situation schematic diagram when being done at described sheet forming by a UO (E) extruding/punching block according to the method described in the present invention,
Fig. 8 is a forming step schematic diagram that forms " U " shape, promptly by an extruding (undeclared), promotes the tool that dashes of the shape that conforms to downwards herein, and described layer material so (herein can not see equally) in a punch die together is pushed,
Fig. 9 is a forming step schematic diagram that forms " O " shape, form a gap pipeline exactly, promptly by an extruding (undeclared herein), from following and above the tool that dashes of two semi-circular shapes of mutual promotion form body, therefore another forms a visible circle in the profile schematic diagram to described layer material.
The specific embodiment
As shown in Figure 1, two combination layer material 1a that overlap each other and be placed to multi-layer piping that see from the top, 1b, 2, wherein, the layer material 1a that layer material is described horizontal, 1b, by two element 1a along the duct orientation horizontal, 1b, preferably thin plate is formed, after this should form the internal layer of this multi-layer piping, begin the both sides 3a along its edge direction according to the method described in the present invention, after this 3b and contiguous layer material 2 should form the skin of described pipeline, at first preferably by a solder bond together.
As shown in Figure 2, one according to manufacture method of the present invention, promptly in the step of this method, the profile of a front edge in a still uncompleted multi-layer piping 5, wherein, manufactured multi-layered sheet material passes through thin plate shaping apparatus, for example a crooked roller mill (for example crooked roller mill of this thin plate shaping apparatus is not shown herein) forms this pipeline 5, wherein, in forming process, described this element 1a that does not also combine with contiguous layer material 2, the edge 4a of 1b, 4b is because internal layer 1,1a, and 1b and outer 2 differently curved degree freely move each other according to the moulding progress.At two layer materials 1,1a, described first between the 1b and 2 connects and described edge 3a occurred, 3b, described edge 3a, 3b is along the inner layer pipe 1 that forms, 1a, the direction of 1b stretches and for example formed by welding before the pipeline forming process.At this layer material 1,1a, 1b, 2 described first connects in 3a and the 3b scope, thus move owing to being connected to each other no longer each other, but be maintained fixed herein.Supplementary notes, the part that in this conduit upper scope, shows (in this scope, the crack of going back opening being arranged) and its internal layer and skin 1,1a, 1b, 2 parts that overlap each other have formed circle (this radius is limited).It is not clear that this situation may illustrate in Fig. 2, therefore makes further specifying here.
As shown in Figure 3, one according to manufacture method of the present invention, promptly in the step of this method, the profile of a front edge in an equally still uncompleted multi-layer piping 5, wherein behind a fixing forming step, by the element 1a of horizontal, two free edge 4a of 1b, 4b can run into mutually.Then, this multi-layer piping 5 is by means of thin plate shaping apparatus final molding (not showing here), wherein, in the end between shaping period, this layer material is owing to the mutual collision of described edge 4a and 4b no longer continues to move, therefore, one is extruded as inner layer pipe and forms layer material 1,1a, 1b, another then becomes layer material 2 as outer layer pipe.Same supplementary notes as Fig. 2, the part that in this conduit upper scope, shows (in this scope, the crack of going back opening being arranged) and its internal layer and skin 1,1a, 1b, 2 parts that overlap each other have formed circle (this radius is limited).It is not clear that this situation may illustrate in Fig. 3, therefore makes further specifying here.
As shown in Figure 4, completed multi-layer piping 5 and internal layer (also can be called interior pipe, inner pipe passway, interior pipe thin plate) 1,1a, total schematic diagram of 1b and skin (also can be called outer tube, outer tube passage, basic thin plate) 2, wherein, the welding 7 of this multi-layer piping 5 by described outer tube 2 along the direction of a pipe crack 8 and should in pipe 1,1a, the welding 9 of 1b connects together.Illustrate equally, 1,1a, 1b, first between 2 connects 3a, and 3b formed before the pipeline forming process; Described two inner layer element 1a, two of 1b edge 4a freely also, the collision edge of 4b also can be seen.
As shown in Figure 5, according to a multi-layer piping internal layer 1a shown in Figure 4,1b and outer 2 is at welding scope 3a, 3b, the detailed view in 7,9.
As shown in Figure 6, a continuous pipeline forming process schematic diagram according to the foregoing principle of the present invention, in this process, described combination layer material 1a, 1b, 2 or its element XianCheng's web-like separately, launch then and place continuously each other.Then, one externally the edge joint weld on the edge connected a pad limit 10, promptly laser instrument or pipe crack bonding machine or some seam welding machine or similarly machine finish.Here also can consider arc welding.Then, after the pipeline forming process, once more continuously and utilize the method for moulding, stack the layer material 1a that puts and weld at the edge by laying equal stress on continuously each other by means of a profile pipeline 6,1b, 2 form the pipeline 5 that the crack mouth is arranged, and are used as the thin plate shaping apparatus use.The method of this pipeline moulding is open in technical background, just as described at patent document US 3327383.(supplementary notes: in the side view of forming method, the profile pipeline of reduced representation is shown as cylindrical.The diagram bottom, the situation of forming method all has demonstration in diagram separately, can see profile pipeline 6.)
Partial illustration has illustrated said process once more, and wherein, the useful device in the first half from here down, differently in illustrated the latter half pass through the situation schematic diagram that classification arrow 11 marks, and shows along the mechanical feed direction.
Two layer material element 1a that see from the top, 1b and make progress together from the layer material 2 that bottom sees.The continuous layer material element 1a from the top as the web-like transmission, 1b is shown as a breadth, the enforcement of method constructed in accordance, this is suitable for forming described completed inner-walls of duct, and this inwall enough is compressed by the pressure that produces because of the pipeline moulding.Details of measuring and the described location that is placed in inner layer material element, process is discussed in the part of above-mentioned describe, in general terms, here can be with for referencial use.The described layer material that extends from the bottom up 2 is used as outer layer pipe afterwards and demonstrates the outer circumference of this moulding pipeline 5 with its breadth.
Described two edge 1a, 1b, 2 placements that overlap each other, their edges separately are welded together by means of a welding edge 10, so the described element 1a of the internal layer that forms afterwards, and 1b externally links together at the edge respectively at the skin 2 that forms afterwards.The middle layer material 2 that forms outer pipe wall is in reverse to described two element 1a of inner-walls of duct, and 1b placement and edge are loose.
In forming method subsequently, now by described multi-layered sheet 1a, 1b, 2 form a pipeline 5 by means of the arrangement of a profile pipeline 6 (description of profile pipeline is arranged in the supplementary notes of top) continuously, foregoing also loose built-in layer material element 1a, the edge of 1b is now owing to outerly collide each other with the different bending radius of inner layer pipe and owing to also can move freely running foul of each other of thin plate edge, the ground internal layer 1 of formation that connects together this moment.After this pipeline forming process just so, so described two inner layer element 1a, 1b continues to run foul of each other, this has just formed power of described internal layer 1 and because the extruding of this power has formed described outer 2 again, produced a fatiscent pipeline 5 at last, this pipeline can be closed by welding along the direction of breach.---promptly passing through the crack of opening still by means of a laser instrument---pushed mutually and/or welds with described outer thin layer material 2 can to make described two inner layer element 1a in case of necessity in advance, the edge of 1b.
As shown in Figure 7, one according to the method described in the present invention, arranges exit situation schematic diagram when being done at described sheet forming by a UO (E) extruding/punching block.External layer material 2 after described is positioned over the element 1a of bottom and described two formation internal layers 1 afterwards, and 1b is positioned over the outside.They welded together with layer material 2 edges of bottom and and the layer material 2 of bottom form circular.If the situation possibility is layer material 1a after this edge extent forms circle, 1b, 2 edge welding.The element 1a of described two horizontal in the centre, the 1b each interval.
As shown in Figure 8, a forming step schematic diagram that forms " U " shape is promptly by an extruding (undeclared herein), what promote downwards the shape that conforms to dashes tool 13, described layer material 1a, 1b, therefore 2 (can not see equally) in a punch die together herein are pushed.Built-in layer material element 1a described here, 1b and they can move freely thin plate edge, ground---since skin 2 and internal layer 1,1a, the bending radius that 1b is different---move mutually.
As shown in Figure 9, a forming step schematic diagram that forms " O " shape, form a gap pipeline exactly, promptly by an extruding (undeclared herein), from following and above the tool 14,15 of dashing of two semi-circular shapes of mutual promotion form bodys, described layer material 1a, therefore 1b, 2 another forms a visible circle in the profile schematic diagram.Built-in layer material element 1a described here, 1b can move freely mutual the moving in thin plate edge, ground---because different cambers---with them and collides and form an internal layer 1 continuously each other up to them, this internal layer is extruded in pipeline forming process subsequently in outer 2, because described inner layer element 1a, the original free edge of 1b no longer can move.Because they flick these domes no longer mutually, but are placed on the outer wall 2.
Supplementary notes, similar to method of the present invention, by means of a pressure/punch die arrangement, this method is interpreted as so-called " JCO " method, can be implemented.Corresponding with " JCO " method, change to two layer materials, just become UO of the present invention (E) method.The element 1a of described horizontal, 1b edge and form outer field layer material 2 welding backs afterwards and form a crack pipeline according to the JCO method.According to desirable effect of the present invention, inner layer element 1a at first, the edge of thin plate freely of 1b collides mutually, form thus one continuously internal layer 1 then because the differently curved degree of outer and internal layer faces toward described outer 2 is extruded.In any case, be not only UO (E) method of change according to the present invention, and also have the JCO method can make described two inner layer element 1a, the thin plate edge that can move freely of 1b collide each other the back and/or with described outer 2 weld together, promptly, preferably realize by means of a laser-beam welding machine by the breach that also is in open state of crack pipeline.
Claims (according to the modification of the 19th of treaty)
1. the manufacture method of the multi-layer piping by means of thin plate shaping apparatus (5) is characterized in that,
The overlapping independent multi-layer piping (5) that is placed to of layer material (1,2) of-combination, wherein, at least one layer material (1) by more than one horizontal element (1a 1b) forms,
-then at described horizontal layer material (1a, between described edge member 1b) and the described adjacent layer material (2) first connects (3a, 3b) edge is along described horizontal layer material (1,1a, long limit 1b) or horizontal edge or along a line in parallel, or along or be parallel to after pipeline slit (8) will be connected to each other together
-described pipeline (5) moulding of making by the multi-layered sheet material and at the layer material (1a of horizontal described in the above-mentioned forming process, element (1a 1b), movable edge (the 4a that also is in free state 1b), 4b) because interior pipe (1a, 1b) make moving freely of conforming to forming step with the different girth of outer tube (2)
-described horizontal layer material (1a, element 1b) (1a, the edge that moves mutually 1b) (4a 4b) runs foul of each other together behind a fixing forming step,
-this multi-layer piping (5) is by means of this thin plate shaping apparatus final molding then, wherein, at described horizontal light sheet material (1a, element (1a 1b), edge (4a 1b), 4b) no longer can move freely between last shaping period, therefore (1a 1b) is being extruded under the effect of power among another layer material as outer tube (2) for the layer material of pipe in conduct.
2. the manufacture method of multi-layer piping according to claim 1 (5), it is characterized in that, this multi-thin-layer material is moulded pipeline, in this forming step, described horizontal layer material (1a, element 1b) (1a, edge (4a movably before 1b), 4b) collision mutually, pipe and the overlapped place of outer tube have just formed arch at the pipeline of moulding in this.
3. the manufacture method of multi-layer piping according to claim 1 and 2 (5) is characterized in that, and the layer material that pipe works in the described conduct (1,1a, 1b) profile forms incomplete circle in the multi-layer piping of finishing (5).
4. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 3, it is characterized in that, the profile in the multi-layer piping of finishing (5) that pipe works in the described conduct forms the layer material of incomplete circle, and (1,1a is 1b) at the bottom of this multi-layer piping formation groove.
5. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 4, it is characterized in that (1a, (4a connection occurred, preferred weld between 4b) at the edge of the mutual collision of element 1b) at described horizontal light sheet material.
6. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 5, it is characterized in that, this multi-layer piping (5) by along the welding (7) of the outer tube (2) of this pipeline breach (8) and interior pipe (1,1a, welding 1b) (9) is closed together.
7. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 6, it is characterized in that this layer material (1,1a, 1b, 2) is joined together at the front edge of this pipeline (5).
8. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 7, it is characterized in that double-skin duct is manufactured as multi-layer piping (5).
9. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 8, it is characterized in that, as the element (1a of layer material (1,2) or this layer material (1), 1b) should use thin plate, preferably sheet metal and particularly iron plate.
10. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 9, it is characterized in that, the described connection of this layer material (1,2) (3a, 3b, 4a, 4b) at least one be the welding.
11. manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 10, it is characterized in that, this method is designed to continuous method, wherein, the layer material (1 of this combination, 1a, 1b, 2) or its element (1a, 1b) each links together since the edge of rolling unclamps and continues hereafter to overlap each other and continue, preferably welding, the wherein said pipeline forming process that takes place afterwards continue equally to realize that this forming method is to make the layer material of continuous overlapping placement form the pipeline (5) that has the crack by the method for using as thin plate shaping apparatus with a kind of forming method.
12. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 10 is characterized in that, uses the roller machine as thin plate shaping apparatus.
13. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 10 is characterized in that, the method for using UO (E)-extruding/punch die arrangement (13,14,15) is as thin plate shaping apparatus.
14. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 10 is characterized in that, the method for using JCO-extruding/punch die to arrange is regarded thin plate shaping apparatus.
Claims (15)
1. the manufacture method of the multi-layer piping by means of thin plate shaping apparatus (5) is characterized in that,
The overlapping independent multi-layer piping (5) that is placed to of layer material (1,2) of-combination, wherein, at least one layer material (1) by more than one horizontal element (1a 1b) forms,
-then one described horizontal layer material (1a, first between described edge member 1b) and the described adjacent layer material (2) connect (3a 3b) produces,
-described pipeline (5) moulding of making by the multi-layered sheet material and at the layer material (1a of horizontal described in the above-mentioned forming process, element (1a 1b), movable edge (the 4a that also is in free state 1b), 4b) because interior pipe (1a, 1b) make moving freely of conforming to forming step with the different girth of outer tube (2)
-described horizontal layer material (1a, element 1b) (1a, the edge that moves mutually 1b) (4a 4b) runs foul of each other together behind a fixing forming step,
-this multi-layer piping (5) is by means of this thin plate shaping apparatus final molding then, wherein, at described horizontal light sheet material (1a, element (1a 1b), edge (4a 1b), 4b) no longer can move freely between last shaping period, therefore (1a 1b) is being extruded under the effect of power among another layer material as outer tube (2) for the layer material of pipe in conduct.
2. the manufacture method of multi-layer piping according to claim 1 (5), it is characterized in that, this multi-thin-layer material is moulded pipeline, in this forming step, described horizontal layer material (1a, element 1b) (1a, edge (4a movably before 1b), 4b) collision mutually, pipe and the overlapped place of outer tube have just formed arch at the pipeline of moulding in this.
3. the manufacture method of multi-layer piping according to claim 1 and 2 (5), it is characterized in that, at this layer material (1,1a, 1b, 2) between described first connection finish by following method, along described horizontal layer material (1,1a, long limit 1b) or horizontal edge or along a line in parallel, or along or be parallel to after pipeline slit (8) will be connected to each other together.
4. according to the manufacture method of the described multi-layer piping of claim 1,2 or 3 (5), it is characterized in that, and the layer material that pipe works in the described conduct (1,1a, 1b) profile forms incomplete circle in the multi-layer piping of finishing (5).
5. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 4, it is characterized in that, the profile in the multi-layer piping of finishing (5) that pipe works in the described conduct forms the layer material of incomplete circle, and (1,1a is 1b) at the bottom of this multi-layer piping formation groove.
6. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 5, it is characterized in that (1a, (4a connection occurred, preferred weld between 4b) at the edge of the mutual collision of element 1b) at described horizontal light sheet material.
7. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 6, it is characterized in that, this multi-layer piping (5) by along the welding (7) of the outer tube (2) of this pipeline breach (8) and interior pipe (1,1a, welding 1b) (9) is closed together.
8. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 7, it is characterized in that this layer material (1,1a, 1b, 2) is joined together at the front edge of this pipeline (5).
9. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 8, it is characterized in that double-skin duct is manufactured as multi-layer piping (5).
10. according to the manufacture method of the described multi-layer piping of arbitrary claim (5) in the claim 1 to 9, it is characterized in that, as the element (1a of layer material (1,2) or this layer material (1), 1b) should use thin plate, preferably sheet metal and particularly iron plate.
11. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 10 is characterized in that, the described connection of this layer material (1,2) (3a, 3b, 4a, 4b) at least one be the welding.
12. manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 11, it is characterized in that, this method is designed to continuous method, wherein, the layer material (1 of this combination, 1a, 1b, 2) or its element (1a, 1b) each links together since the edge of rolling unclamps and continues hereafter to overlap each other and continue, preferably welding, the wherein said pipeline forming process that takes place afterwards continue equally to realize that this forming method is to make the layer material of continuous overlapping placement form the pipeline (5) that has the crack by the method for using as thin plate shaping apparatus with a kind of forming method.
13. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 11 is characterized in that, uses the roller machine as thin plate shaping apparatus.
14. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 11 is characterized in that, the method for using UO (E)-extruding/punch die arrangement (13,14,15) is as thin plate shaping apparatus.
15. the manufacture method according to the described multi-layer piping of arbitrary claim (5) in the claim 1 to 11 is characterized in that, the method for using JCO-extruding/punch die to arrange is regarded thin plate shaping apparatus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2009/004467 WO2010145680A1 (en) | 2009-06-19 | 2009-06-19 | Production-optimized method for producing a multilayered tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101983109A true CN101983109A (en) | 2011-03-02 |
Family
ID=41528987
Family Applications (1)
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|---|---|---|---|
| CN2009801055969A Pending CN101983109A (en) | 2009-06-19 | 2009-06-19 | Production-optimized method for producing a multilayered tube |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20110146366A1 (en) |
| EP (1) | EP2285508B1 (en) |
| JP (1) | JP2012529993A (en) |
| KR (1) | KR101205676B1 (en) |
| CN (1) | CN101983109A (en) |
| AT (1) | ATE520479T1 (en) |
| AU (1) | AU2009318922B2 (en) |
| BR (1) | BRPI0906446A2 (en) |
| CA (1) | CA2706347C (en) |
| WO (1) | WO2010145680A1 (en) |
Cited By (1)
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| CN104853859A (en) * | 2012-10-02 | 2015-08-19 | 卢森堡有限责任公司法斯特图博知识产权管理公司 | Method for the high-speed production of a multi-layered tube |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013103811B3 (en) * | 2013-04-16 | 2014-03-20 | EISENBAU KRäMER GMBH | Method for producing a multi-layered large pipe |
| BR102013021664B1 (en) * | 2013-08-23 | 2020-11-10 | Vallourec Soluções Tubulares Do Brasil S.A | process for production of clad tube by drawing and clad tube |
| KR101657817B1 (en) * | 2014-12-23 | 2016-09-20 | 주식회사 포스코 | Manufacturing method of plate for cladding pipe and manufacturing apparatus for the same and clade pipe |
| CN106140922A (en) * | 2015-04-10 | 2016-11-23 | 上海丁柯机械有限公司 | A kind of drawing process of laminated multi-layer workpiece |
| CN115846791A (en) * | 2023-03-03 | 2023-03-28 | 无锡市源隆金属制品有限公司 | Welding device for automobile straight welded pipe |
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- 2009-06-19 EP EP09776794A patent/EP2285508B1/en not_active Not-in-force
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- 2009-06-19 KR KR1020107017116A patent/KR101205676B1/en not_active IP Right Cessation
- 2009-06-19 AU AU2009318922A patent/AU2009318922B2/en not_active Ceased
- 2009-06-19 CA CA2706347A patent/CA2706347C/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2009318922A1 (en) | 2011-01-13 |
| EP2285508B1 (en) | 2011-08-17 |
| JP2012529993A (en) | 2012-11-29 |
| KR101205676B1 (en) | 2012-11-27 |
| CA2706347A1 (en) | 2010-09-08 |
| KR20110033977A (en) | 2011-04-04 |
| CA2706347C (en) | 2012-01-24 |
| BRPI0906446A2 (en) | 2015-07-14 |
| AU2009318922B2 (en) | 2011-12-08 |
| ATE520479T1 (en) | 2011-09-15 |
| US20110146366A1 (en) | 2011-06-23 |
| EP2285508A1 (en) | 2011-02-23 |
| WO2010145680A1 (en) | 2010-12-23 |
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