CN107520548A - A kind of assembly welding method taken over housing for emplacement type structure - Google Patents
A kind of assembly welding method taken over housing for emplacement type structure Download PDFInfo
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- CN107520548A CN107520548A CN201710935087.5A CN201710935087A CN107520548A CN 107520548 A CN107520548 A CN 107520548A CN 201710935087 A CN201710935087 A CN 201710935087A CN 107520548 A CN107520548 A CN 107520548A
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- Prior art keywords
- housing
- adapter
- welding method
- type structure
- groove
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of assembly welding method taken over housing, particularly a kind of assembly welding method taken over housing for emplacement type structure, belong to Welding Technique of Pressure Vessel field.A kind of adapter of the present invention and the assembly welding method that housing is emplacement type structure, comprise the following steps：Step 1, it will take over one end and form outer groove；Step 2, housing opened up into mounting hole；Step 3, adapter one end placement with groove is fixed on to the housing exterior walls for offering mounting hole；Step 4, ceramic substrate is close to be installed on nozzle inner wall and mounting hole hole wall；Step 5, butt tube and housing are welded on the outside of taking over.Use a kind of assembly welding method of the adapter of the present invention with housing for emplacement type structure, it is simple to operate, practical, be advantageous to popularization and application, be easily achieved, while weld seam through welding can be ensured, ensure welding quality, production efficiency is improved, reduces manufacturing cost.
Description
Technical field
The present invention relates to a kind of assembly welding method taken over housing, and particularly a kind of take over housing is emplacement type structure
Assembly welding method, belong to Welding Technique of Pressure Vessel field.
Background technology
In pressure vessel industries, it usually needs in housing（Cylinder or end socket）Upper bond pads pipe, when the adapter of pressure vessel
When internal diameter is smaller, adapter wall thickness and during all larger housing wall or pressure vessel needs to apply in fatigue load, big temperature gradient field
During conjunction, the assembling form being typically employed to is emplacement type, i.e. adapter is not inserted into housing, but adapter is placed on housing, such as
Shown in Fig. 3, in order to ensure weld seam penetrate, to welding of waiting a little while,please at nozzle inner wall have protrude from nozzle inner wall and can be inserted into housing
Ring-type backing plate in mounting hole（Ring-type backing plate is structure as a whole with adapter）, after end to be welded, then boring is carried out inside butt tube
Hole operation, at least need to fall ring-type backing plate boring.Although this method can ensure weld seam through welding, ensure welding quality,
It is disadvantageous in that：Because nozzle inner wall has ring-type backing plate, this adds increased material cost, and postwelding also needs to carry out boring
Hole operation, reduces production efficiency, adds manufacturing cost.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided it is emplacement type knot that one kind, which is taken over housing,
The assembly welding method of structure, it is simple to operate, practical, be advantageous to popularization and application, be easily achieved, weld seam through welding can be ensured, ensured
While welding quality, production efficiency is improved, reduces manufacturing cost.
The technical solution adopted by the present invention is as follows：
A kind of assembly welding method taken over housing for emplacement type structure, comprises the following steps：
Step 1, it will take over one end and form outer groove；
Step 2, housing opened up into mounting hole；
Step 3, adapter one end placement with groove is fixed on to the housing exterior walls for offering mounting hole；
Step 4, ceramic substrate is close to be installed on nozzle inner wall and mounting hole hole wall；
Step 5, butt tube and housing are welded on the outside of taking over.
During using above-mentioned technical proposal, first choice carries out step 1, will take over one end and form outer groove.If groove is inner slope
Mouth or inside and outside groove（K shape grooves）, because adapter internal diameter is smaller（d≤400mm）, then nozzle inner wall and mounting hole hole during welding
Wall junction is difficult to welding；And generally take over and be made of forging technology, if the adapter of forging is without shape simultaneously
Into outer groove, now need to process to form outer groove using machine-tooled method；If take over one end while forging to form outside
Groove, now groove without being machined out again.Then carry out step 2, housing is opened up into mounting hole.Mounting hole and adapter phase
Match somebody with somebody.Obvious step 1 and step 2 are to exchange, and can also be carried out simultaneously.Then step 3 is carried out, by connecing with groove
Lay the housing exterior walls for being fixed on and offering mounting hole in pipe one end.Adapter can be fixedly welded on housing by gusset, and makes to connect
The inwall of pipe and the hole wall of mounting hole are to matching, and adapter is identical with the axis of mounting hole, to ensure that step 4 can smoothly be entered
OK.Then carry out step 4, be close to be installed on nozzle inner wall and mounting hole hole wall by ceramic substrate.Ceramic substrate includes pad
Block and the aluminum foil and adhesive tape for being arranged at the spacer block back side, ceramic substrate is with being pasted on nozzle inner wall and mounting hole hole wall so that pottery
The grooving of ceramic liner pad（Grooving is located at spacer block front）The gap being matched between nozzle inner wall and mounting hole hole wall.Then
Carry out step 5, welded from adapter outside butt tube and housing.Preferably, suitable weldering is used by SMAW
Technological parameter butt tube is connect to be welded with housing.As a result of the design of ceramic substrate, without carrying out back chipping operation again（By
Smaller in adapter internal diameter, back chipping operation is also what is be difficult to）, it becomes possible to welding forms the welding point for meeting to require.Also,
As a result of the assembly welding method of the present invention, adapter, can with after case weld, bore hole operation is carried out without the inside of butt tube again
Reduce adapter and group welder's sequence of housing；The present invention is simple to operate, practical, is advantageous to popularization and application, is easily achieved, can
While ensureing weld seam through welding, ensure welding quality, production efficiency is improved, reduces manufacturing cost.
Further, in step 1, groove is single V-butt or J-shaped groove.When groove is to be machined into, single V-arrangement
Retaining wall on slope shaping is simple, and J-shaped retaining wall on slope is relatively complicated.
Further, in step 1, groove is J-shaped groove, and the root radius R of groove is 6mm-13mm.
Further, in step 1, the angle [alpha] of groove is 20 ° -50 °.If the angle [alpha] of groove is too small, welding is not easy to,
The root of weld easily produces the situation of lack of fusion；If the angle [alpha] of groove is excessive, filling amount of metal will increase, and just cause
Welding cost increase, welding stress increase, can also reduce production efficiency.
Further, in step 1, root face c≤3mm of groove.If the root face c of groove is excessive, the root of weld easily goes out
Existing lack of fusion, produces concavo-convex lines, takes over the weld seam and mother metal of inner side（Adapter and housing）Transition is more rough, back of weld
Quality is not ideal enough.
Further, in step 1, the internal diameter d of adapter is 100mm-450mm.If the internal diameter d of adapter is too small, it is not easy to
Ceramic substrate is installed；If the internal diameter d of adapter is excessive, now due to being easy to back chipping, inside and outside groove type can be used, and nothing
Ceramic substrate need to be used；Certainly, it is also feasible using the scheme of ceramic substrate, i.e. in step 1, the internal diameter d of adapter can be with
More than 450mm.
Further, in step 2, the diameter D of mounting hole is equal to the internal diameter d of adapter.Be advantageous to the installation of ceramic substrate.
Further, in step 3, the fit-up gap b between adapter and housing is 2-8mm.Fit-up gap b（In other words, root
Portion gap）Size directly affect the width of adapter weld joint on inner side and the size of reinforcement.If fit-up gap b is too small, now may be used
To ensure that weld seam penetrates using larger electric current, but because heat input is excessive, the performance of Welded Joints is unfavorable, while
Add welding operation difficulty.
Further, in step 4, the width B of the grooving of ceramic substrate is more than or equal to the assembling taken between housing
Gap b.Grooving is an important factor for influenceing back of weld forming dimension and quality, when B is slightly larger than b, is advantageous to weld seam through welding,
And the transition of weld seam and mother metal.Preferably, B=b+1 to b+4.Preferably, the depth of the grooving of ceramic substrate is 0.5mm-
2mm。
Further, it is further comprising the steps of after step 5：Step 6, by ceramic substrate from nozzle inner wall and mounting hole hole
Removed on wall.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
A kind of adapter of the present invention and the assembly welding method that housing is emplacement type structure, after adapter and case weld, without docking again
Bore hole operation is carried out inside pipe, adapter and group welder's sequence of housing can be reduced；The present invention is simple to operate, practical, favourable
In popularization and application, it is easily achieved, while weld seam through welding can be ensured, ensure welding quality, improves production efficiency, reduce
Manufacturing cost.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is assembling schematic diagram of the adapter of single V-butt with housing for emplacement type structure；
Fig. 2 is assembling schematic diagram of the adapter of J-shaped groove with housing for emplacement type structure；
Fig. 3 is assembling schematic diagram of the adapter in the prior art with housing for emplacement type structure.
Marked in figure：1- adapters, 2- housings, 3- ceramic substrates.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
As shown in Fig. 1, a kind of adapter of the present embodiment and the assembly welding method that housing is emplacement type structure, including following step
Suddenly：
Step 1, it will take over 1 one end and form outer groove；
Step 2, housing 2 opened up into mounting hole；
Step 3, the one end of adapter 1 placement with groove is fixed on to the outer wall of housing 2 for offering mounting hole；
Step 4, ceramic substrate 3 is close to be installed on the inwall of adapter 1 and the hole wall of mounting hole 2；
Step 5, welded from the outside butt tube 1 of adapter 1 with housing 2.
During using above-mentioned technical proposal, first choice carries out step 1, will take over 1 one end and form outer groove.If groove is inner slope
Mouth or inside and outside groove（K shape grooves）, because the internal diameter of adapter 1 is smaller（d≤400mm）, then the inwall of adapter 1 and mounting hole during welding
2 hole wall junctions are difficult to welding；And generally adapter 1 is made of forging technology, if the adapter 1 of forging is without same
When form outer groove, now need to process to form outer groove using machine-tooled method；If the one end of adapter 1 is formed while forging
Outer groove, now groove without be machined out again.Then carry out step 2, housing 2 is opened up into mounting hole.Mounting hole is with connecing
Pipe 1 matches.Obvious step 1 and step 2 are to exchange, and can also be carried out simultaneously.Then carry out step 3, will have
Lay the outer wall of housing 2 for being fixed on and offering mounting hole in one end of adapter 1 of groove.Adapter 1 can be fixedly welded on shell by gusset
On body 2, and make the inwall of adapter 1 and the hole wall of mounting hole adapter 1 is identical with the axis of mounting hole, to ensure step 4 to matching
Can smoothly it carry out.Then carry out step 4, be close to be installed on the inwall of adapter 1 and the hole wall of mounting hole 2 by ceramic substrate 3.Pottery
Ceramic liner pad 3 includes spacer block and is arranged at the aluminum foil and adhesive tape at the spacer block back side, and ceramic substrate 3 is with being pasted on the inwall of adapter 1 and peace
Fill on the hole wall of hole 2 so that the grooving of ceramic substrate 3（Grooving is located at spacer block front）It is matched with the inwall of adapter 1 and installation
Gap between the hole wall of hole 2.Then carry out step 5, welded from the outside butt tube 1 of adapter 1 with housing 2.It is preferably, logical
SMAW is crossed to be welded with housing 2 using suitable welding condition butt tube 1.As a result of ceramic substrate 3
Design, without carrying out back chipping operation again（Because the internal diameter of adapter 1 is smaller, back chipping operation is also what is be difficult to）, it becomes possible to weld
Connect the welding point to be formed and meet to require.Also, as a result of the assembly welding method of the present invention, after adapter 1 and the welding of housing 2,
Without carrying out bore hole operation inside butt tube again, group welder's sequence of adapter 1 and housing 2 can be reduced；The present invention is simple to operate, real
With property it is strong, be advantageous to popularization and application, be easily achieved, while weld seam through welding can be ensured, ensure welding quality, improve production
Efficiency, reduce manufacturing cost.In a wherein embodiment, housing 2 is cylinder；In another embodiment, housing 2 is end socket.
Further, in another embodiment, in step 1, groove is single V-butt or J-shaped groove.When groove adds for machine
When work forms, single V-butt machine-shaping is simple, and J-shaped retaining wall on slope is relatively complicated.
Further, in another embodiment, in step 1, groove is J-shaped groove, and the root radius R of groove is 6mm-
13mm.In a wherein embodiment, the root radius R of J-shaped groove for 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm or
Any size in 13mm.
Further, in another embodiment, in step 1, the angle [alpha] of groove is 20 ° -50 °.If the angle [alpha] of groove
It is too small, welding is not easy to, the root of weld easily produces the situation of lack of fusion；If the angle [alpha] of groove is excessive, metal is filled
Amount will increase, and just cause welding cost to increase, and welding stress increase, can also reduce production efficiency.In a wherein embodiment, slope
The angle [alpha] of mouth is the unspecified angle in 20 °, 25 °, 30 °, 35 °, 40 °, 45 ° or 50 °.
Further, in another embodiment, in step 1, root face c≤3mm of groove.If the root face c of groove is excessive,
Easily there is lack of fusion in the root of weld, produces concavo-convex lines, the weld seam and mother metal of the inner side of adapter 1（Adapter and housing）Transition
More rough, back of weld quality is not ideal enough.In a wherein embodiment, the root face c of groove is 0,0.5mm, 1mm, 1.5mm,
Any size in 2mm, 2.5mm or 3mm.
Further, in another embodiment, in step 1, the internal diameter d of adapter is 100mm-450mm.If adapter is interior
Footpath d is too small, is not easy to install ceramic substrate 3；If the internal diameter d of adapter is excessive, now due to being easy to back chipping, it can use interior
Outer groove type, without using ceramic substrate 3；Certainly, it is also feasible using the scheme of ceramic substrate 3, i.e. in step 1,
The internal diameter d of adapter can also be more than 450mm.In a wherein embodiment, the internal diameter d of adapter is 100mm, 150mm, 200mm,
Any size in 250mm, 300mm, 350mm, 400mm, 450mm or 500mm.
Further, in another embodiment, in step 2, the diameter D of mounting hole is equal to the internal diameter d of adapter.Be advantageous to make pottery
The installation of ceramic liner pad 3.That is D=d.
Further, in another embodiment, in step 3, the fit-up gap b between adapter 1 and housing 2 is 2-8mm.Dress
With gap b（In other words, root gap）Size directly affect the width of the weld joint on inner side of adapter 1 and the size of reinforcement.If dress
It is too small with gap b, now it can ensure that weld seam penetrates using larger electric current, but because heat input is excessive, to connecing
The performance of head is unfavorable, while also increases welding operation difficulty.In a wherein embodiment, the assembling between adapter 1 and housing 2
Gap b is any size in 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm.
Further, in another embodiment, in step 4, the width B of the grooving of ceramic substrate 3 is more than or equal to adapter 1
Fit-up gap b between housing 2.Grooving is that B is slightly larger than b an important factor for influenceing back of weld forming dimension and quality
When, be advantageous to weld seam through welding, and the transition of weld seam and mother metal.Preferably, B=b+1 to b+4.In a wherein embodiment, B=
B, B=b+1, B=b+2, B=b+3 or B=b+4.Preferably, the depth of the grooving of ceramic substrate 3 is 0.5mm-2mm.
Further, in another embodiment, it is further comprising the steps of after step 5：Step 6, by ceramic substrate 3 from connecing
The inwall of pipe 1 on the hole wall of mounting hole 2 with removing.Ceramic substrate 3 is pasted on the inwall of adapter 1 and the hole wall of mounting hole 2 by aluminum foil and adhesive tape
When upper, it is only necessary to which aluminum foil and adhesive tape, which is torn, to remove ceramic substrate 3, easy to operate.
In summary, a kind of assembly welding method of the adapter of the present invention with housing for emplacement type structure, adapter and housing are used
After welding, without carrying out bore hole operation inside butt tube again, adapter and group welder's sequence of housing can be reduced；Present invention operation letter
It is single, practical, be advantageous to popularization and application, be easily achieved, weld seam through welding can be ensured, while ensure welding quality, improved
Production efficiency, reduces manufacturing cost.
The invention is not limited in foregoing embodiment.The present invention, which expands to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. a kind of assembly welding method taken over housing for emplacement type structure, it is characterised in that comprise the following steps：
Step 1, it will take over（1）One end forms outer groove；
Step 2, by housing（2）Open up mounting hole；
Step 3, by the adapter with groove（1）Lay the housing for being fixed on and offering mounting hole in one end（2）Outer wall；
Step 4, by ceramic substrate（3）It is close to be installed on adapter（1）Inwall and mounting hole（2）On hole wall；
Step 5, from adapter（1）Outside butt tube（1）With housing（2）Welded.
A kind of 2. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 1, groove is single V-butt or J-shaped groove.
A kind of 3. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 1, groove is J-shaped groove, and the root radius R of groove is 6mm-13mm.
A kind of 4. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 1, the angle [alpha] of groove is 20 ° -50 °.
A kind of 5. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 1, root face c≤3mm of groove.
A kind of 6. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 1, the internal diameter d of adapter is 100mm-450mm.
A kind of 7. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 2, the diameter D of mounting hole is equal to the internal diameter d of adapter.
A kind of 8. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 3, adapter（1）With housing（2）Between fit-up gap b be 2-8mm.
A kind of 9. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
In 4, ceramic substrate（3）Grooving width B be more than or equal to adapter（1）With housing（2）Between fit-up gap b.
A kind of 10. assembly welding method taken over housing for emplacement type structure according to claim 1, it is characterised in that：Step
It is further comprising the steps of after rapid 5：
Step 6, by ceramic substrate（3）From adapter（1）Inwall and mounting hole（2）Removed on hole wall.
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| CN201710935087.5A CN107520548A (en) | 2017-10-10 | 2017-10-10 | A kind of assembly welding method taken over housing for emplacement type structure |
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| CN201710935087.5A CN107520548A (en) | 2017-10-10 | 2017-10-10 | A kind of assembly welding method taken over housing for emplacement type structure |
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Cited By (5)
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| CN108413161A (en) * | 2018-04-23 | 2018-08-17 | 荆门宏图特种飞行器制造有限公司 | Adapting method is installed on blind flange, is taken over, blind flange and pressure vessel |
| CN111730239A (en) * | 2020-06-24 | 2020-10-02 | 浙江精工钢结构集团有限公司 | Steel structure butt welding robot welding process and welding line structure |
| CN111791035A (en) * | 2020-07-21 | 2020-10-20 | 山西丰喜化工设备有限公司 | Manufacturing method of high-pressure-resistant and corrosion-resistant heat exchanger shell side exhaust structure |
| CN113878309A (en) * | 2021-10-11 | 2022-01-04 | 宜昌船舶柴油机有限公司 | Combined machining process for connecting pipe diffuser and connecting pipe fixing ring of gas turbine |
| CN114749775A (en) * | 2022-06-13 | 2022-07-15 | 山西阳煤化工机械（集团）有限公司 | Embedded connecting pipe structure and assembly welding method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413161A (en) * | 2018-04-23 | 2018-08-17 | 荆门宏图特种飞行器制造有限公司 | Adapting method is installed on blind flange, is taken over, blind flange and pressure vessel |
| CN111730239A (en) * | 2020-06-24 | 2020-10-02 | 浙江精工钢结构集团有限公司 | Steel structure butt welding robot welding process and welding line structure |
| CN111730239B (en) * | 2020-06-24 | 2022-06-10 | 浙江精工钢结构集团有限公司 | Steel structure butt welding robot welding process and welding line structure |
| CN111791035A (en) * | 2020-07-21 | 2020-10-20 | 山西丰喜化工设备有限公司 | Manufacturing method of high-pressure-resistant and corrosion-resistant heat exchanger shell side exhaust structure |
| CN113878309A (en) * | 2021-10-11 | 2022-01-04 | 宜昌船舶柴油机有限公司 | Combined machining process for connecting pipe diffuser and connecting pipe fixing ring of gas turbine |
| CN113878309B (en) * | 2021-10-11 | 2024-03-08 | 宜昌船舶柴油机有限公司 | Combined machining process for gas turbine connecting pipe diffuser connecting pipe fixing ring |
| CN114749775A (en) * | 2022-06-13 | 2022-07-15 | 山西阳煤化工机械（集团）有限公司 | Embedded connecting pipe structure and assembly welding method thereof |
| CN114749775B (en) * | 2022-06-13 | 2022-10-21 | 山西阳煤化工机械（集团）有限公司 | Embedded connecting pipe structure and assembly welding method thereof |
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Application publication date: 20171229 |