CN105234062B - A kind of inner circle corrosion-proof steel pipe fitting connecting process - Google Patents
A kind of inner circle corrosion-proof steel pipe fitting connecting process Download PDFInfo
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- CN105234062B CN105234062B CN201510682028.2A CN201510682028A CN105234062B CN 105234062 B CN105234062 B CN 105234062B CN 201510682028 A CN201510682028 A CN 201510682028A CN 105234062 B CN105234062 B CN 105234062B
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- pipe fitting
- pipe
- inner circle
- surfacing
- spraying area
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 32
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000005488 sandblasting Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000002421 anti-septic effect Effects 0.000 abstract description 4
- 238000007751 thermal spraying Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229920000106 Liquid crystal polymer Polymers 0.000 description 1
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of inner circle corrosion-proof steel pipe fitting connecting process, including step：A）The circle oil removing of pipe fitting；B）Pipe fitting inner circle sandblasting；C）Mouth of pipe surfacing：Surfacing area and surfacing alloy anticorrosive coat are delineated in the union end mouth of pipe inner circle of all pipe fittings；D）Sprayed in pipe：It is spraying area that each pipe fitting inner circle beyond surfacing area, which is delineated,；Each pipe fitting is longitudinally disposed, each pipe fitting is transferred along straight line and makes rotation, load coil is powered simultaneously, each spraying area first passes through load coil heating, engineering plastic powder is sprayed in spraying area by the spray gun of lower section again, so that engineering plastic powder is adhered in heated whole spraying area, stop decentralization pipe fitting；Each pipe fitting is above carried and makes its rotation, while load coil is powered, and first passes through heated pipe fitting and melting temperature is heated to engineering plastic powder, then control two arc pressuring plates to be contacted with whole spraying area, extruding is carried out to melting engineering plastics, obtain sprayed coating；E) weld.The uniformity of spray layer thickness and consistency is effectively ensured in the present invention, and improves surface smoothness, greatly improves coating quality, reduces product cost, and ensures that the antiseptic property of whole pipeline inner circle meets needs.
Description
Technical field
The present invention relates to a kind of inner circle corrosion-proof steel pipe fitting connecting process.
Background technology
The steel pipe of the industries such as oil, chemical industry, electric power is presently used for, to change its inner surface characteristic, meets that anti-corrosion will
Ask, generally using engineering plastics such as polyphenylene sulfide, polyether-ether-ketone, polyimides and liquid crystal polymer, its each pipe fitting inner circle is entered
Row thermal spraying；The hot-spraying technique of existing pipe fitting inner circle use pipe heating, centrifugal gunite work plastic powders, stove more
The mode of room temperature is melted, be cooled to interior heat again, is the shortcomings that the technique：1）It is different from spraying alloy powder, engineering plastic powder
It is relatively light, during spraying and workpiece adhesive force it is poor, cause the thickness of sprayed coating, consistency not to control accurately, plus heating weight
Sprayed coating has certain mobility when melting, and this is resulted in, and the thickness of sprayed coating, consistency are uneven, and surface roughness can not also be controlled
System, has a strong impact on coating quality, even results in substantial amounts of waste product, adds product cost, and the process-cycle is grown, production efficiency compared with
It is low；Last each pipe fitting, which need to weld, to be connected to form pipeline, and above-mentioned each pipe fitting, because weld zone temperature is higher, can cause to spray in connection
Layer melting comes off, and anti-corrosive properties are affected or scrapped.
The content of the invention
The purpose of the present invention is to be directed to deficiencies of the prior art, there is provided a kind of inner circle corrosion-proof steel pipe fitting connection
Technique, the uniformity of spray layer thickness and consistency can be effectively ensured in it, and improves surface smoothness, greatly improve spraying matter
Amount, product cost is reduced, and ensure that the antiseptic property of whole pipeline inner circle meets needs.
To reach above-mentioned purpose, a kind of inner circle corrosion-proof steel pipe fitting connecting process of the invention, comprise the following steps：A）It is right
The inner circle oil removing of all pipe fittings of more than two；B）Inner circle sandblasting to all pipe fittings；C）Mouth of pipe surfacing：In the connection of all pipe fittings
Connect the intraoral circle of end pipe and delineate surfacing area, in the region surfacing alloy anticorrosive coat；Characterized by further comprising：D）Sprayed in pipe：Will
It is spraying area that each pipe fitting inner circle beyond surfacing area, which delineates,；Each pipe fitting is longitudinally disposed, and load coil and several spray guns are indulged
To each arranged at inner side of pipe fitting is fixedly arranged on, moveable two arc pressuring plate is set in load coil upper horizontal；By each pipe fitting along directly
Line is transferred and it is rotated around own axes, while load coil is powered, and each spraying area first passes through load coil and added
Heat, engineering plastic powder is sprayed in spraying area by the spray gun of lower section again so that engineering plastic powder is adhered to heated whole
In spraying area, stop decentralization pipe fitting；Each pipe fitting is above carried and it is rotated around own axes, while load coil is powered,
First pass through heated pipe fitting and melting temperature is heated to engineering plastic powder, then control two arc pressuring plates to be connect with whole spraying area
Touch, extruding is carried out to melting engineering plastics, obtain sprayed coating；E) weld：It is after each sprayed coating cooling and shaping, each pipe fitting is adjacent
The union end mouth of pipe welding be connected, obtain complete duct coupling；
The present invention implements engineering by implementing surfacing alloy anticorrosive coat in the surfacing area of union end mouth of pipe inner circle, in spraying area
The thermal spraying of plastics, the high temperature of weld zone can be avoided in welding influences sprayed coating, it is ensured that the anti-corrosive properties of whole pipeline inner circle
Needs can be met；In spraying, by driving pipe fitting rotation to ensure the uniformity for heating, spraying and extruding；Pass through control two
The radial clearance of arc pressuring plate and pipe fitting, the thickness of coating, consistency are inconsistent when spraying, can be to melting in extruding
Engineering plastics it is again moulding, the uniformity of spray layer thickness and consistency is effectively ensured, and improve consistency, can not only eliminate
Influence of the mobility of engineering plastics to coating quality is melted, and improves surface smoothness, greatly improves coating quality, is reduced useless
Product rate, reduce product cost；And pipe fitting completes processing during up-downgoing is once reciprocal, for heating, natural cooling immediately, adds
The work cycle is short, and production efficiency is higher；
As a further improvement on the present invention, in welding：The adjacent union end mouth of pipe of each pipe fitting is set in axial gap
Put, the adjacent union end mouth of pipe is connected by built-up welding internal layer wlding, internal layer wlding is and alloy anticorrosive coat identical material, reality
The welding of existing dissimilar steel, then the built-up welding carbon steel layer outside internal layer wlding；Influence of the welding to sprayed coating can further be reduced, protected simultaneously
Demonstrate,prove pipeline strength；
As a further improvement on the present invention, each pipe fitting upper end is connected with one section of transition tool；During spraying, transition
Frock and the position correspondence of load coil and two arc pressuring plates, it is easy to implement thermal spraying to the whole spraying area of pipe fitting inner circle；
As a further improvement on the present invention, guide sleeve is fixedly installed outside each pipe fitting, is prevented when pipe fitting moves up and down
It swings；
In summary, the uniformity of spray layer thickness and consistency can be effectively ensured in the present invention, and improves surface smoothness,
Coating quality is greatly improved, reduces product cost, and ensures that the antiseptic property of whole pipeline inner circle meets needs.
Brief description of the drawings
Fig. 1 is the front view of the hot spray apparatus used in the present invention.
Fig. 2 is the enlarged drawing of control cylinder in Fig. 1.
Fig. 3 is the front view for the complete duct coupling that the present invention obtains.
Fig. 4 is Fig. 3 A-A profiles.
Fig. 5 is the sectional view of complete duct coupling end pipe fitting.
Fig. 6 is the sectional view of complete duct coupling intermediate pipe piece.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, the hot spray apparatus that uses in the present invention, including support 1, support 1 is located at by guideway 2
On installing plate 3, the reducing motor 4 that is fixedly arranged on installing plate 3, reducing motor 4 is connected with shaft coupling 5, on pipe fitting 6 to be sprayed
End is connected by one section of transition tool 7 with shaft coupling 5, and the internal diameter of transition tool 7 is more than the internal diameter of pipe fitting 6 and welded with pipe fitting 6,
The outside of pipe fitting 6 is provided with recovery tube 19, and recovery tube 19 is connected with collecting box 20；Guide sleeve 21 is installed with outside pipe fitting 6；In pipe
A fixed pillar 8 for the medial gap of part 6, pillar 8 are connected with recovery tube 19, and load coil 9 is installed with pillar 8,
Several spray guns 10 are installed with the pillar 8 of the lower section of load coil 9, pass through insulating support 11 above load coil 9
Control cylinder 12 is installed with, control cylinder 12 includes passing through cylinder barrel 13, two work in cylinder barrel 13 that insulating support 11 is fixed
Plug 14, the stretching hydraulic fluid port 15 located at the middle part of cylinder barrel 13 and the two retraction hydraulic fluid ports 16 positioned at cylinder barrel both ends, two-piston 14 are associated with respectively
From piston rod 17, two-piston bar 17 connects firmly respective arc pressuring plate 18, and two arc pressuring plates 18 are symmetrically positioned in the interior of pipe fitting 6
Side；The height of transition tool 7 is more than the height of load coil 9 plus control cylinder 12；
A kind of inner circle corrosion-proof steel pipe fitting connecting process of the present invention, comprises the following steps：A）To the inner circle of several pipe fittings
Oil removing；B）Inner circle sandblasting to all pipe fittings；C）Mouth of pipe surfacing：As shown in Figure 5, Figure 6, by the one of pipe ends portion pipe fitting 22
The inner circle delineating for connecing the certain axial length of end pipe mouth is surfacing area 24, by the two union end mouths of pipe one of remaining all intermediate pipe piece 23
Determining the inner circle of axial length, to delineate be surfacing area 25, and in all surfacing areas, surfacing is Ni-based or chromium base or ferrous alloy anticorrosive coat；D）
Sprayed in pipe：It is spraying area that each pipe fitting inner circle beyond surfacing area, which is delineated,；As shown in Figure 1 and Figure 2, each longitudinal direction of pipe fitting 6 is set
Put, load coil 9 and the longitudinal direction of several spray guns 10 are fixedly arranged on each inner side of pipe fitting 6, and the moveable level of two arc pressuring plate 18 is set
It is placed in the top of load coil 9；Pass through boom hoisting（Such as driving, it is not shown）Reducing motor 4 is transferred, reducing motor 4 and
Installing plate 3 is descending along guideway 2, while reducing motor 4 rotates, and each pipe fitting 6 is transferred along straight line and it is revolved around own axes
Turn, while load coil 9 is powered, and each spraying area first passes through load coil 9 and heated, again by the spray gun 10 of lower section by work
Engineering plastics powder（Such as polyphenylene sulfide, polyether-ether-ketone, polyimides）It is sprayed in spraying area so that engineering plastic powder is adhered to
In heated whole spraying area, stop decentralization pipe fitting 6；Each pipe fitting 6 is above carried and it is rotated around own axes, is sensed simultaneously
Heating coil 9 is powered, and first passes through heated pipe fitting 6 and melting temperature is heated to engineering plastic powder, then to control cylinder 12
Stretching hydraulic fluid port 15 fuel feeding, two-piston bar 17 stretch out, and two arc pressuring plates 18 of control contact with whole spraying area, to melting engineering plastics
Extruding is carried out, obtains sprayed coating；E) weld：After each sprayed coating cooling and shaping, as shown in Figure 3, Figure 4, by each pipe fitting 22 or 23
The adjacent union end mouth of pipe is set in axial gap, and the adjacent union end mouth of pipe is connected by built-up welding internal layer wlding 26, internal layer
Wlding 26 be with alloy anticorrosive coat identical material, realize the welding of dissimilar steel, then in the outer built-up welding carbon steel layer 27 of internal layer wlding 26,
Obtain complete duct coupling 28；
The union end mouth of pipe of each pipe fitting is equipped with pass with it in the complete middle position of duct coupling 28, such as pipe ends portion pipe fitting 22
There is a union end mouth of pipe, intermediate pipe piece 23 has two union end mouths of pipe；The present invention passes through the spray in union end mouth of pipe inner circle
Welding zone 24 or 25 implements surfacing alloy anticorrosive coat, implements the thermal spraying of engineering plastics in spraying area, surfacing area 24 and 25 is in axial direction
Length determined by welding temperature, be defined by the combination for not influenceing follow-up sprayed coating and pipe fitting, welding when can avoid welding
The high temperature in area causes sprayed coating to melt or come off；Heating-up temperature during thermal spraying is far below the fusion temperature of spray-welding coating（800
More than DEG C）, avoid previous spray-welding coating from being damaged, it is ensured that the antiseptic property of the whole inner circle of pipeline 28 meets needs；The present invention
Pipe fitting 6 is driven to rotate the uniformity that can ensure to heat, spray and extrude by reducing motor 4, and can be quick by sensing heating
Reach the temperature of thermal spraying（It is below 300 DEG C）；Control it to reach precalculated position by the range of two-piston bar 17, make
Obtaining two arc pressuring plates 18 and keep identical radial clearance with pipe fitting 6, the thickness of coating, consistency are inconsistent when spraying,
Can be again moulding to the engineering plastics of melting in extruding, the uniformity of spray layer thickness and consistency is effectively ensured, and improve
Consistency, influence of the mobility of melting engineering plastics to coating quality can be not only eliminated, and improve surface smoothness, significantly carried
High coating quality, percent defective is reduced, reduce product cost；And pipe fitting 6 completes processing during up-downgoing is once reciprocal, for i.e.
Shi Jiare, natural cooling, the process-cycle is short, and production efficiency is higher.
Claims (4)
1. a kind of inner circle corrosion-proof steel pipe fitting connecting process, comprises the following steps：A）To the inner circle of all pipe fittings of more than two
Oil removing；B）Inner circle sandblasting to all pipe fittings；C）Mouth of pipe surfacing：Surfacing area is delineated in the union end mouth of pipe inner circle of all pipe fittings,
In the region surfacing alloy anticorrosive coat；Characterized by further comprising：D）Sprayed in pipe：Each pipe fitting inner circle beyond surfacing area is drawn
It is set to spraying area；Each pipe fitting is longitudinally disposed, and load coil and several spray guns are longitudinally fixedly arranged on each arranged at inner side of pipe fitting, are sensing
Heating coil upper horizontal sets moveable two arc pressuring plate；Each pipe fitting is transferred along straight line and it is revolved around own axes
Turn, while load coil is powered, each spraying area first passes through load coil heating, again by the spray gun of lower section by engineering plastic
Feed powder end is sprayed in spraying area so that engineering plastic powder is adhered in heated whole spraying area, stops decentralization pipe fitting；Will
Each pipe fitting above carries and it is rotated around own axes, while load coil is powered, and first passes through heated pipe fitting to engineering plastic
Feed powder end is heated to melting temperature, then controls two arc pressuring plates to be contacted with whole spraying area, carries out extruding to melting engineering plastics,
Obtain sprayed coating；E) weld：After each sprayed coating cooling and shaping, the adjacent union end mouth of pipe welding of each pipe fitting is connected, obtained
Complete duct coupling.
2. a kind of inner circle corrosion-proof steel pipe fitting connecting process as claimed in claim 1, it is characterised in that in welding：By each pipe
The adjacent union end mouth of pipe of part is set in axial gap, and the adjacent union end mouth of pipe is connected by built-up welding internal layer wlding, internal layer
Wlding be with alloy anticorrosive coat identical material, realize the welding of dissimilar steel, then the built-up welding carbon steel layer outside internal layer wlding.
3. a kind of inner circle corrosion-proof steel pipe fitting connecting process as claimed in claim 1 or 2, it is characterised in that by each pipe fitting
Upper end is connected with one section of transition tool.
4. a kind of inner circle corrosion-proof steel pipe fitting connecting process as claimed in claim 3, it is characterised in that fixed outside each pipe fitting
Guide sleeve is set, its swing is prevented when pipe fitting moves up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682028.2A CN105234062B (en) | 2015-10-21 | 2015-10-21 | A kind of inner circle corrosion-proof steel pipe fitting connecting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682028.2A CN105234062B (en) | 2015-10-21 | 2015-10-21 | A kind of inner circle corrosion-proof steel pipe fitting connecting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105234062A CN105234062A (en) | 2016-01-13 |
| CN105234062B true CN105234062B (en) | 2017-12-19 |
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| CN201510682028.2A Active CN105234062B (en) | 2015-10-21 | 2015-10-21 | A kind of inner circle corrosion-proof steel pipe fitting connecting process |
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| CN108006328B (en) * | 2017-12-08 | 2020-06-16 | 自贡市巨光硬面材料科技有限公司 | Manufacturing process of inner circle full-corrosion-proof pipe fitting |
| CN117778937B (en) * | 2024-01-19 | 2024-12-20 | 永康市珏灵电器股份有限公司 | Manufacturing equipment and manufacturing method of plasma non-stick pan |
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| ATE503147T1 (en) * | 2007-04-25 | 2011-04-15 | Kwh Pipe Ab Oy | METHOD AND DEVICE FOR COATING PIPES |
| CN103170445A (en) * | 2013-02-22 | 2013-06-26 | 北钢管业（营口）有限公司 | One-step shaping technology for coating epoxy powder on inner wall and outer wall of steel pipe |
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Denomination of invention: Connecting technology of steel pipes with anti-corrosion inner circles Effective date of registration: 20180228 Granted publication date: 20171219 Pledgee: Bank of Zigong Limited by Share Ltd Pledgor: ZIGONG JUGUANG HARD-SURFACE TECHNOLOGY CO., LTD. Registration number: 2018510000027 |
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Denomination of invention: Connecting technology of steel pipes with anti-corrosion inner circles Effective date of registration: 20191127 Granted publication date: 20171219 Pledgee: Bank of Zigong Limited by Share Ltd Pledgor: ZIGONG JUGUANG HARD-SURFACE TECHNOLOGY CO., LTD. Registration number: Y2019510000055 |
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