CN109693014A - A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket - Google Patents
A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket Download PDFInfo
- Publication number
- CN109693014A CN109693014A CN201910048228.0A CN201910048228A CN109693014A CN 109693014 A CN109693014 A CN 109693014A CN 201910048228 A CN201910048228 A CN 201910048228A CN 109693014 A CN109693014 A CN 109693014A
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- Prior art keywords
- flange
- gasket
- welded
- welding
- arc
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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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket, include the following steps: Step 1: the flange of gasket to be welded is taken to carry out roughing, Step 2: the gasket to be welded of but suitable dimension is selected according to the size of flange, Step 3: gasket to be welded is welded on flange；Step 4: carrying out final forming machining to flange.The method of the present invention that flange gasket and flange sealing surface are carried out composite overlaying, realizes the requirement for meeting Corrosion Protection by welded flange gasket.Welding efficiency is also effectively improved simultaneously, is reduced welding deformation, has been saved the energy and reduce the waste of wlding.
Description
Technical field
The present invention relates to the preservative treatment of flange and processing and manufacturing technologies, weld more particularly, to one kind in flange end
Take over control the composite overlaying manufacturing method of rotten gasket.
Background technique
As a key equipment in Ballast Management system, performance will directly affect whole automatic backwashing filter
Can a Ballast Management system operate normally.Filter medium is seawater when automatic backwashing filter is run, with contact with sea water
Housing parts take anticorrosion with painting coating mainly to carry out preservative treatment, for the component being completely soaked in seawater, then adopt
Anti-corrosion treatment is carried out with the preferable steel alloy of sea water corrosion resistant.But for some cooperation fitting surfaces, in assembly or disassembly
It easily collides in the process, it is ineffective to carry out preservative treatment using corrosion-inhibiting coating.It is preferable according to sea water corrosion resistant
Steel alloy carries out overall processing manufacture, certainly will will cause the increase of automatic backwashing filter cost.Past is usually in anti-corrosion
One layer of corrosion resisting alloy of the direct built-up welding in face, has that welding thermal deformation is big, effect although having reached anti-corrosion effect in this way, when built-up welding
Phenomena such as rate is low, wlding waste is serious.
Summary of the invention
The purpose of the present invention is for solve in the prior art by end face of flange anticorrosion with painting coating carry out anti-corrosion at
Ineffective problem is managed, a kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket is provided, by flange
It is arranged circumferentially flange gasket on the end face of sealing surface, by welding gasket and base material, is increased on flange base material surface
Add one layer of corrosion resistant alloy, met the requirement of flange sealing surface Corrosion Protection, while reaching reduction welding workload again,
Welding deformation is reduced, the purpose of production cost is reduced.
The deficiency of the present invention to solve above-mentioned technical problem, used technical solution is:
A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket, includes the following steps:
Step 1: the flange of gasket to be welded is taken to carry out roughing, a diameter is processed in one end that flange needs to install gasket
For D1Depth is H1Step, the internal diameter of flange is D2, step to flange inside upper part inclined-plane is with a thickness of H2, welded according to gasket
Connecing the final finished size on flange and reserving machining allowance is 3-5mm, does chamfered in concave hole and through-hole transition edge,
Chamfer angle is 45 ° -60 ° of any angle, define at chamfering with a thickness of CH, then H2-20mm≤ CH≤H2-10mm；
Step 2: according to the gasket to be welded of the selection of dimension suitable dimension of flange, the outer radii for controlling gasket to be welded is
R3, R3=D1/ 2, the inner radii of gasket to be welded is R1, R1=D2Gasket to be welded is divided into n sections of arc spacers by/2-10mm,
N is positive integer, and 60 °≤360 °/n≤90 °, and it is D that several spaced maximum gauges are processed in every section of arc spacerWeldering
Welding process hole, R3-R1-10mm≤DWeldering≤R3-R1The distance of -5mm, center to the gasket center of each welding process hole is
R2, R2=R1+ (R3-R1)/2 cut off the segmental arc that one section of arc length is L, 7.5mm≤L in the end of adjacent both ends arc spacer
≤ 10mm removes iron rust, greasy dirt and the oxide on flange and each section of arc spacer surface, then by the uniform axis of each arc spacer
To the concave hole being mounted on end face of flange in, be divided into 15-20mm between controlling between two neighboring arc spacer；
Step 3: the chamfering with a thickness of CH in the arc spacer and step 1 that are distributed on end face of flange in step 2 cooperates shape
At welding groove, rivet welding processing is carried out to the welding process hole in arc spacer, between the weld seam arc spacer and welds slope
Mouth carries out built-up welding processing；
Step 4: carrying out PT inspection to the flange after step 3 welding, stress relief annealing, annealing are carried out to flange after the assay was approved
Final forming machining is carried out to flange after processing.
Welding process hole is bellmouth in the step two, and the cone angle of the bellmouth is 45 ° -60 °.
The beneficial effects of the present invention are: of the present invention carry out composite overlaying for flange gasket and flange sealing surface
Method realizes the requirement for meeting Corrosion Protection by welded flange gasket.Simultaneously also effectively improve welding efficiency,
Welding deformation is reduced, the energy has been saved and reduces the waste of wlding.
Detailed description of the invention
Fig. 1 is flange roughing structural schematic diagram.
Fig. 2 is the structural schematic diagram of arc spacer.
Fig. 3 is that arc spacer installs mated condition schematic diagram.
Fig. 4 is the final structure schematic diagram after flange welding.
Diagram label: 1, flange；2, ellipse head；3, gasket.
Specific embodiment
As shown in the figure, specific embodiment is as follows:
The present embodiment is to carry out welding processing for flange 1Q345R material and ellipse head 2Q345R material, as shown in fig. 1,
First the flange 1 of the Q345R material for the ellipse head 2 for being welded with Q345R material is welded,
A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket, includes the following steps:
Step 1: the flange 1 of gasket to be welded is taken to carry out roughing, one is processed directly in one end that flange needs to install gasket 3
Diameter is D1Depth is H1Concave hole, the through-hole for running through flange is processed at concave hole center, the diameter of through-hole is D2Through-hole
Closure be H2, being welded on the final finished size on flange to reserve machining allowance according to gasket is 3-5mm, in concave hole and is led to
Hole transition edge does chamfered, any angle that chamfer angle is 45 ° -60 °, define at chamfering with a thickness of CH, then H2-
20mm≤ CH≤H2-10mm；
Step 2: according to the gasket to be welded of the selection of dimension suitable dimension of flange, the outer radii for controlling gasket to be welded is
R3, R3=D1/ 2, the inner radii of gasket to be welded is R1, R1=D2The thickness of/2-10mm, gasket to be welded should be according to final built-up welding
It is general to choose with a thickness of H depending on the thickness of layer1Gasket to be welded is divided into n sections of arc spacers by -10mm, and n is positive whole
Number, and 60 °≤360 °/n≤90 ° process the welding that several spaced maximum gauges are D weldering in every section of arc spacer
Fabrication hole, R3-R1-10mm≤DWeldering≤R3-R1- 5mm, welding process hole are bellmouth, and the cone angle of the bellmouth is 45 ° -60 °,
The distance at the center of each welding process hole to gasket center is R2, R2=R1+ (R3-R1)/2, in adjacent both ends arc spacer
End cuts off the segmental arc that one section of arc length is L, and 7.5mm≤L≤10mm removes the iron on flange and each section of arc spacer surface
Rust, greasy dirt and oxide control phase then by each arc spacer uniformly concave hole of axial direction being mounted on end face of flange
15-20mm is divided between adjacent two arc spacers；
Step 3: the chamfering with a thickness of CH in the arc spacer and step 1 that are distributed on end face of flange in step 2 cooperates shape
At welding groove, rivet welding processing is carried out to the welding process hole in arc spacer, between the weld seam arc spacer and welds slope
Mouth carries out built-up welding processing；
Step 4: to step 3 welding after flange carry out PT inspection, in time find welding process present in stomata, crackle,
The welding defects such as slag inclusion carry out stress relief annealing to flange after the assay was approved, after annealing, are carried out using lathe to flange
Final forming machining, to obtain required accurate to dimension.
Technical solution cited by the present invention and embodiment and non-limiting, with technical solution cited by the present invention and
Embodiment is equivalent or effect same approach is all in the range of the present invention is protected.
Claims (2)
1. a kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket, characterized by the following steps:
Step 1: the flange of gasket to be welded is taken to carry out roughing, a diameter is processed in one end that flange needs to install gasket
For D1Depth is H1Step, the internal diameter of flange is D2, step to flange inside upper part inclined-plane is with a thickness of H2, welded according to gasket
Connecing the final finished size on flange and reserving machining allowance is 3-5mm, does chamfered in concave hole and through-hole transition edge,
Chamfer angle is 45 ° -60 ° of any angle, define at chamfering with a thickness of CH, then H2-20mm≤ CH≤H2-10mm；
Step 2: according to the gasket to be welded of the selection of dimension suitable dimension of flange, the outer radii for controlling gasket to be welded is
R3, R3=D1/ 2, the inner radii of gasket to be welded is R1, R1=D2Gasket to be welded is divided into n sections of arc spacers by/2-10mm,
N is positive integer, and 60 °≤360 °/n≤90 °, and it is D that several spaced maximum gauges are processed in every section of arc spacerWeldering
Welding process hole, R3-R1-10mm≤DWeldering≤R3-R1The distance of -5mm, center to the gasket center of each welding process hole is
R2, R2=R1+ (R3-R1)/2 cut off the segmental arc that one section of arc length is L, 7.5mm≤L in the end of adjacent both ends arc spacer
≤ 10mm removes iron rust, greasy dirt and the oxide on flange and each section of arc spacer surface, then by the uniform axis of each arc spacer
To the concave hole being mounted on end face of flange in, be divided into 15-20mm between controlling between two neighboring arc spacer；
Step 3: the chamfering with a thickness of CH in the arc spacer and step 1 that are distributed on end face of flange in step 2 cooperates shape
At welding groove, rivet welding processing is carried out to the welding process hole in arc spacer, between the weld seam arc spacer and welds slope
Mouth carries out built-up welding processing；
Step 4: carrying out PT inspection to the flange after step 3 welding, stress relief annealing, annealing are carried out to flange after the assay was approved
Final forming machining is carried out to flange after processing.
2. a kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket according to claim 1, feature
Be: welding process hole is bellmouth in the step two, and the cone angle of the bellmouth is 45 ° -60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048228.0A CN109693014A (en) | 2019-01-18 | 2019-01-18 | A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048228.0A CN109693014A (en) | 2019-01-18 | 2019-01-18 | A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109693014A true CN109693014A (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048228.0A Pending CN109693014A (en) | 2019-01-18 | 2019-01-18 | A kind of composite overlaying manufacturing method in flange end welding anti-corrosion gasket |
Country Status (1)
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| CN (1) | CN109693014A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054281A (en) * | 1983-09-02 | 1985-03-28 | Hitachi Ltd | Manufacture of build-up welded flange |
| CN101749503A (en) * | 2009-12-29 | 2010-06-23 | 西安向阳航天材料股份有限公司 | Duplex metal compound flange pipe fitting having flange connection on end and manufacturing method thereof |
| CN106180970A (en) * | 2016-08-23 | 2016-12-07 | 山西阳煤化工机械（集团）有限公司 | A kind of for gasification furnace vessel flange strip surfacing method |
-
2019
- 2019-01-18 CN CN201910048228.0A patent/CN109693014A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054281A (en) * | 1983-09-02 | 1985-03-28 | Hitachi Ltd | Manufacture of build-up welded flange |
| CN101749503A (en) * | 2009-12-29 | 2010-06-23 | 西安向阳航天材料股份有限公司 | Duplex metal compound flange pipe fitting having flange connection on end and manufacturing method thereof |
| CN106180970A (en) * | 2016-08-23 | 2016-12-07 | 山西阳煤化工机械（集团）有限公司 | A kind of for gasification furnace vessel flange strip surfacing method |
Non-Patent Citations (2)
| Title |
|---|
| 上海五金采购供应站等编: "《农村常用五金知识》", 28 February 1974 * |
| 李洪波等: "压载水过滤器法兰堆焊结构的工艺改进", 《热加工工艺》 * |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210121 Address after: No. 169, Binhe South Road, Luolong District, Luoyang City, Henan Province Applicant after: NO.725 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. Address before: 471000 shuangxiang Road, Luoxin Industrial Park, Xin'an County, Luoyang City, Henan Province Applicant before: LUOYANG SHUANGRUI METAL COMPOSITE MATERIALS Co.,Ltd. |
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Application publication date: 20190430 |