CN107803607A - Welding dissimilar materials structure for composite plate pressing pressure container - Google Patents
Welding dissimilar materials structure for composite plate pressing pressure container Download PDFInfo
- Publication number
- CN107803607A CN107803607A CN201610815537.2A CN201610815537A CN107803607A CN 107803607 A CN107803607 A CN 107803607A CN 201610815537 A CN201610815537 A CN 201610815537A CN 107803607 A CN107803607 A CN 107803607A
- Authority
- CN
- China
- Prior art keywords
- weldment
- pressure container
- composite plate
- dissimilar materials
- pressing pressure
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention relates to a kind of welding dissimilar materials structure for composite plate pressing pressure container, for engaging the first weldment (1) of tubulose and the second weldment (3) of tubulose, the welding structure includes：Overlay cladding (2), it is arranged at the inner surface of the first weldment (1) and the second weldment (3)；Transition zone (5), it is covered in the end of the first weldment (1)；Weld seam (4), it is formed between the end of transition zone (5) and the second weldment (3), and the section of weld seam (4) is sector, the outside of fan-shaped central angle the first weldment of direction (1) and the second weldment (3)；Root gap (6), surrounded by the end of overlay cladding (2), transition zone (5), weld seam (4) and the second weldment (3).The welding structure can be effectively isolated weld seam and corrosive medium, and can be without back chipping or back chipping amount very little.
Description
Technical field
It is more particularly to a kind of to be used for again the present invention relates to the pressure vessel welding field of the applications such as petrochemical industry, coal chemical industry
The welding dissimilar materials structure of plywood pressing pressure container.
Background technology
More and more and increasing to the demand of clean energy resource, the refining with the high-sulfur and high-acid crude oil of country's processing
Oil and coal chemical engineering equipment largely start.One of the characteristics of these devices is to form a large amount of hydrogen sulfide (H after desulfurization2S), therefore one
A little positions form low temperature H2S corrosive environments.In order to overcome this corrosion, it is necessary to manufacture pressure vessel using composite plate.
The housing basic unit of pressure container of composite board uses low-alloy steel and carbon steel, and for pressure-bearing, coating uses stainless steel, uses
Carry out contact corrosion medium.It is general that medium inlet and medium are set with low head bottom at the top of pressure container of composite board upper cover
Outlet.Fig. 1 shows the sectional view at pressure container of composite board low head 13, as shown in figure 1, in the media outlet of low head 13
A horizontal short tube is welded on the housing at place, then welds a bend pipe and VERTICAL TUBE propelling container skirt 11 again.Media outlet it is straight
Footpath is typically smaller, can not use composite plate manufacture bend pipe, can only use stainless-steel seamless pipe manufacture bend pipe, horizontal short tube is then
Using low-alloy steel and carbon steel pipes or forging, it so there is welding dissimilar materials with bend pipe junction in horizontal short tube and ask
Topic, reference 12 indicate welding position.
It is well known that low temperature H2After S corrosion is electrochemical corrosion, low-alloy steel and carbon steel and is stainless steel welded, if
Without any processing, there will be very big potential difference between two kinds of steel, can aggravate to corrode.Simply two weldments are adopted at present
Welded together with wlding, do not take quarantine measures, there occurs much due to corroding leak case caused by electrochemical corrosion,
A kind of it is therefore contemplated that welding structure that can isolate corrosive medium.
Patent CN101890562B discloses a kind of connection tube safe end dissimilar metal welding technology, and it uses transition zone and weldering
Surface layer.The shortcomings that program, is anticorrosion layer and pressure-bearing weld seam mix when welding, and unfavorable shadow may be caused to anticorrosion layer
Ring.Otherwise it is difficult through welding in addition, using back chipping processing must be carried out during the structure welding.
The content of the invention
It is an object of the invention to provide a kind of welding dissimilar materials structure for composite plate pressing pressure container, it can be every
From weld seam and corrosive medium.
The present invention uses solution below：
A kind of welding dissimilar materials structure for composite plate pressing pressure container, for engage tubulose the first weldment and
Second weldment of tubulose, it is characterised in that the welding structure includes：
Overlay cladding, it is arranged at the inner surface of first weldment and the second weldment；
Transition zone, it is covered in the end of first weldment；
Weld seam, it is formed between the end of the transition zone and second weldment, and the section of the weld seam is fan
Shape, fan-shaped central angle is towards the outside of first weldment and the second weldment；
Root gap, surrounded by the end of the overlay cladding, transition zone, weld seam and second weldment.
Preferably, the thickness of the overlay cladding is 4-6mm.
Preferably, the thickness of the transition zone is 4-8mm.
Preferably, the width b of the root gap is 1-2mm, and height p is 1-2mm.
Preferably, first weldment is made up of carbon steel or low alloy steel, and second weldment is by stainless steel or resistance to
Erosion alloy is made.
Preferably, transition zone, overlay cladding and the weldering are selected according to the material of first weldment and the second weldment
The material of seam.
Preferably, the material of the weld seam is identical with the material of second weldment.
Preferably, arc transition is formed between the end of the overlay cladding and second weldment.
Preferably, hypotenuse transition is formed between the end of the overlay cladding and second weldment.
Preferably, the fan-shaped central angle of the weld seam is 55-70 °.
Compared with prior art, the method have the advantage is capable of be effectively isolated what is flowed in weld seam and weldment
Corrosive medium, and separate pressure-bearing weld seam and anti-corrosion overlay cladding., can be without back chipping or back chipping amount using the welding structure of the present invention
Very little.
Brief description of the drawings
Exemplary embodiment is described in more detail in conjunction with the accompanying drawings, above-mentioned and other purpose of the invention,
Feature and advantage will be apparent, wherein, in the exemplary embodiment, identical reference typically represents identical portions
Part.
Fig. 1 shows the sectional view at existing pressure container of composite board low head；
Fig. 2 shows the section view of the welding dissimilar materials structure for composite plate pressing pressure container according to exemplary embodiment
Figure.
Main Reference Numerals explanation：
11：Skirt, 12：Welding position, 13：Low head；
1：First weldment, 2：Overlay cladding, 3：Second weldment, 4：Weld seam, 5：Transition zone, 6：Root gap, 7- circular arcs
Transition.
Embodiment
The preferred embodiments of the present invention are more fully described below with reference to accompanying drawings.Although show the present invention's in accompanying drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth here
System.On the contrary, these embodiments are provided so that the present invention is more thorough and complete, and can be complete by the scope of the present invention
Ground is communicated to those skilled in the art.
Fig. 2 shows the section view of the welding dissimilar materials structure for composite plate pressing pressure container according to exemplary embodiment
Figure.According to the welding dissimilar materials structure for composite plate pressing pressure container of exemplary embodiment, for engaging the of tubulose
Second weldment 3 of one weldment 1 and tubulose.The welding structure includes：
Overlay cladding 2, it is arranged at the inner surface of the first weldment 1 and the second weldment 3；
Transition zone 5, it is covered in the end of the first weldment 1；
Weld seam 4, it is formed between the end of the weldment 3 of transition zone 5 and second, and the section of weld seam 4 is sector, sector is round
The outside of heart angle the first weldment 1 of direction and the second weldment 3；
Root gap 6, surrounded by the end of overlay cladding 2, transition zone 5, the weldment 3 of weld seam 4 and second.
During welding, the internal diameter alignment of the first weldment 1 of tubulose and the second weldment 3 of tubulose, according to exemplary implementation
The welding dissimilar materials structure of example passes through solder joints the first weldment 1 and the second weldment 3.
According to the welding dissimilar materials structure setting overlay cladding 2 of exemplary embodiment, weld seam 4 and weldering can be effectively isolated
The corrosive medium of fitting internal flow, and pressure-bearing weld seam 4 and anti-corrosion overlay cladding 2 are separated by root gap 6.Root gap
6 setting, reduce the weld cleaning work before anti-corrosion overlay cladding 2 is implemented, also reduce the welding of anti-corrosion overlay cladding 2 as far as possible
Workload.Using the welding dissimilar materials structure according to exemplary embodiment, as long as welding method is proper, for example with argon arc welding
Bottoming, then without back chipping or back chipping amount very little.And the welding structure is adapted to the weldment of welding multiple material, such as anti-corrosion conjunction
Gold etc..
Preferably, the first weldment 1 is generally carbon steel, low-alloy steel etc.；Second weldment 3 is generally stainless
Steel, for example, 304,304,316,316L, 317,317L, 321,347 etc., or corrosion resistant alloy, for example, alloy 825, alloy 625,
Alloy 904L, alloy 6Mo steel (such as S31254, N08367) etc..
Preferably, can be that transition zone 5, overlay cladding 2 and weld seam 4 select difference according to the combination of materials of weldment
Wlding.Preferably, mainly consider that alloy dilutes problem when selecting buffer layer material, therefore the material of transition zone 5 can be
E309L, E309MoL, E309NbL, alloy 625, alloy 904L etc..
Preferably, the material of weld seam 4 is identical with the material of the second weldment 3.
Because transition zone 5 is usually the higher material of alloying component, in order to make when implementing transition zone 5 be gradually diluted to
The similar composition of second weldment 3 for transition zone 5, it is necessary to select suitable thickness.Preferably, the thickness of transition zone 5
Generally 4-8mm.Similarly, the thickness of overlay cladding 2 is generally 4-6mm.
Preferably, the width b of root gap 6 is generally 1-2mm, and the height p of root gap 6 is generally 1-2mm.
The width and height of root gap 6 should not be too big, and width and height too conference cause groove welding amount to increase, and also make it that postwelding is clear
Root becomes difficult.1-2mm width and height both can guarantee that through welding, again groove welding amount is reduced, it is clear to be also beneficial to postwelding
Root.
Preferably, arc transition 7, or overlay cladding 2 are formed between the end of overlay cladding 2 and the second weldment 3
End and the second weldment 3 between formed hypotenuse transition, with reduce implement built-up welding when, the heap caused by heat input is big
Welding stress between the weldment 3 of layer 2 and second.Or can also shape between the end of overlay cladding 2 and the second weldment 3
Into straight flange transition.
Preferably, the fan-shaped central angle of weld seam 4 is 55-70 °.
Preferably, overlay cladding 2 is located at the end on the inner surface of the second weldment 3 and the end of the first weldment 1
The distance between portion is 10mm.
Above-mentioned technical proposal is a kind of embodiment of the present invention, for those skilled in the art, in this hair
On the basis of bright principle disclosed, it is easy to make various types of improvement or deformation, it is above-mentioned specific to be not limited solely to the present invention
The description of embodiment, therefore description above is simply preferable, and not restrictive meaning.
Claims (10)
- A kind of 1. welding dissimilar materials structure for composite plate pressing pressure container, for engaging the first weldment (1) of tubulose With the second weldment (3) of tubulose, it is characterised in that the welding structure includes：Overlay cladding (2), it is arranged at the inner surface of first weldment (1) and the second weldment (3)；Transition zone (5), it is covered in the end of first weldment (1)；Weld seam (4), it is formed between the end of the transition zone (5) and second weldment (3), and the weld seam (4) Section is sector, and fan-shaped central angle is towards first weldment (1) and the outside of the second weldment (3)；Root gap (6), wrapped by the end of the overlay cladding (2), transition zone (5), weld seam (4) and second weldment (3) Enclose.
- 2. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute The thickness for stating overlay cladding (2) is 4-6mm.
- 3. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute The thickness for stating transition zone (5) is 4-8mm.
- 4. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute The width b for stating root gap (6) is 1-2mm, and height p is 1-2mm.
- 5. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute State the first weldment (1) to be made up of carbon steel or low alloy steel, second weldment (3) is made up of stainless steel or corrosion resistant alloy.
- 6. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that root Transition zone (5), overlay cladding (2) and the weld seam (4) are selected according to the material of first weldment (1) and the second weldment (3) Material.
- 7. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute The material for stating weld seam (4) is identical with the material of second weldment (3).
- 8. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute State and arc transition (7) is formed between the end of overlay cladding (2) and second weldment (3).
- 9. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that institute State formation hypotenuse transition between the end of overlay cladding (2) and second weldment (3).
- 10. the welding dissimilar materials structure according to claim 1 for composite plate pressing pressure container, it is characterised in that The fan-shaped central angle of the weld seam (4) is 55-70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815537.2A CN107803607B (en) | 2016-09-09 | 2016-09-09 | Dissimilar material welding structure for composite plate pressing pressure container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815537.2A CN107803607B (en) | 2016-09-09 | 2016-09-09 | Dissimilar material welding structure for composite plate pressing pressure container |
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| CN107803607A true CN107803607A (en) | 2018-03-16 |
| CN107803607B CN107803607B (en) | 2019-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888404A (en) * | 2022-06-24 | 2022-08-12 | 广船国际有限公司 | Assembling and welding method for ship rocker arm and rotating shaft |
| CN115041860A (en) * | 2022-06-09 | 2022-09-13 | 哈尔滨电机厂有限责任公司 | Novel head measuring body welding structure of hydroelectric ultrahigh water head unit |
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| CN105127562A (en) * | 2015-09-30 | 2015-12-09 | 青岛兰石重型机械设备有限公司 | Method for welding dissimilar material welded joint of composite plate |
| CN105195866A (en) * | 2015-10-19 | 2015-12-30 | 西安向阳航天材料股份有限公司 | Full-automatic root welding method for pipe end of bimetal composite pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740826A (en) * | 1970-07-02 | 1973-06-26 | Asahi Chemical Ind | Method for producing composite metallic pipe by explosion pressure welding |
| CN101362249A (en) * | 2008-09-12 | 2009-02-11 | 西安向阳航天材料股份有限公司 | Girth welding method of duplex stainless steel bimetal composite pipe |
| CN101927390A (en) * | 2009-06-23 | 2010-12-29 | 上海沪工电焊机制造有限公司 | Method for welding circumferential weld between metal thin-wall clad layer and base layer of clad pipe |
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| CN203500680U (en) * | 2013-10-23 | 2014-03-26 | 吴汉超 | Bimetal composite pipe with stainless steel pipe connector and two staggered double-welding layers |
| CN104197104A (en) * | 2014-08-22 | 2014-12-10 | 西安向阳航天材料股份有限公司 | Double-metal composite tube and manufacturing process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041860A (en) * | 2022-06-09 | 2022-09-13 | 哈尔滨电机厂有限责任公司 | Novel head measuring body welding structure of hydroelectric ultrahigh water head unit |
| CN115041860B (en) * | 2022-06-09 | 2023-11-14 | 哈尔滨电机厂有限责任公司 | Water and electricity superhigh water head unit gauge head body welded structure |
| CN114888404A (en) * | 2022-06-24 | 2022-08-12 | 广船国际有限公司 | Assembling and welding method for ship rocker arm and rotating shaft |
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| Publication number | Publication date |
|---|---|
| CN107803607B (en) | 2019-08-20 |
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Effective date of registration: 20200910 Address after: 100027 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: SINOPEC ENGINEERING Inc. Patentee after: China Petroleum & Chemical Corp. Co-patentee after: Sinopec Engineering (Group) Co.,Ltd. Address before: 100101 No.21 Anyuan, Anhui Beili, Chaoyang District, Beijing Co-patentee before: Sinopec Engineering (Group) Co.,Ltd. Patentee before: SINOPEC ENGINEERING Inc. |
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