CN105710157B - It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology - Google Patents
It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology Download PDFInfo
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- CN105710157B CN105710157B CN201610199872.4A CN201610199872A CN105710157B CN 105710157 B CN105710157 B CN 105710157B CN 201610199872 A CN201610199872 A CN 201610199872A CN 105710157 B CN105710157 B CN 105710157B
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- steel pipe
- socket
- inspection
- bellmouth
- derusting
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The present invention relates to it is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe, the technological process of production is as follows: steel pipe enter X -ray inspection X → outer derusting → derust outside inspection → bellmouth it is expanding → bellmouth side pressure groove → bellmouth inspection → socket full circle → socket end rounding → socket examines → interior derusting → interior inside and outside wall micronic dust processing of derusting inspection → steel pipe → steel pipe heating → inside and outside plastic-coated → inspection → spray mark → pipe end packs, protection → product inspection → outbound.The present invention can produce heavy caliber anti-corrosive steel tube, safe and reliable, and easy for construction, inner wall smooth, transporting resistance is small, less scaling, and anti-corrosion pipe cost performance is high.The steel pipe that different length can be produced according to execution conditions, improves the efficiency of construction.
Description
Technical field
The invention belongs to steel pipe field, be related to anti-corrosive steel tube, especially it is a kind of can socket joint connection composite metal plastic corrosion-proof steel
The production technology of pipe.
Background technique
With international Urbanization Progress, supply water, drainage pipeline networks is continuously increased with pipe amount.Current water supply, drainage pipeline networks are mostly
Using spheroidal graphite cast-iron anti-corrosion pipe and welding anti-corrosive steel tube.
Spheroidal graphite cast-iron anti-corrosion pipe mounting means is bell and spigot connection, safe and reliable, easy for construction, is particularly applied to sand
Area unconcerned and that construction is inconvenient.But since spheroidal graphite cast-iron pipe casing forms, caliber is restricted；In spheroidal graphite cast-iron anti-corrosion pipe
Wall is coarse to lead to that transporting resistance is big, easy fouling, and anti-corrosion pipe cost performance is low；The anti-corrosion type that spheroidal graphite cast-iron anti-corrosion pipe can process
Few, anti-corrosion effect and pipeline service life are limited；Length of tube is 6 meters mostly, and construction efficiency is low, and construction cost is high.
The welding machinable anti-corrosion type of anti-corrosive steel tube is more, favorable anti-corrosion effect, and pipeline service life is long.Anti-corrosion inside pipe wall light
Sliding, transporting resistance is small, less scaling, and anti-corrosion pipe cost performance is high.The steel pipe that different length can be produced according to execution conditions, improves
The efficiency of construction.But welding anti-corrosive steel tube connection needs to weld, and needs to carry out repaired mouth, construction cost to reserved end after welding
With height, difficulty is big, and the area of many execution conditions differences can not construct.
Summary of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, provide it is a kind of can socket joint connection steel plastic compount it is anti-
The production technology of rotten steel pipe can produce heavy caliber anti-corrosive steel tube, safe and reliable, easy for construction, inner wall smooth, transporting resistance
Small, less scaling, anti-corrosion pipe cost performance is high.The steel pipe that different length can be produced according to execution conditions, improves the efficiency of construction.
The technical proposal for solving the technical problem of the invention is:
It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology, the technological process of production is as follows: steel pipe enters line
Examine → outer derusting → derust outside inspection → bellmouth it is expanding → bellmouth side pressure groove → bellmouth inspection → socket full circle → socket end
Portion's rounding → socket inspection → interior derusting → interior inside and outside wall micronic dust processing of derusting inspection → steel pipe → steel pipe heating → inside and outside painting
Modeling → inspection → spray mark → pipe end packaging, protection → product inspection → outbound.
Moreover, steel pipe is preheating to higher than 3 DEG C of dew-point temperature before derusting outside, surface moisture is removed, outer derusting is using throwing
Ball derusts, and abrasive material used in Shot Blasting is the mixture of stainless steel sand or steel sand, shot, and derusting grade reaches Sa21/2 grades.
Moreover, it is to use 2000 tons of expanding machines expanding to bellmouth progress high-precision cold that the bellmouth is expanding, it is straight after expanding
Diameter and aimed dia deviation ± 0.5mm, ovality≤2mm, expanding transitional region transition is gentle, unstressed concentration after pressure-bearing.
Moreover, the bellmouth side pressure groove is to press groove, ditch groove width at office pipe end 40mm using 1000 tons of book joint setting machines
Spend precision: ± 0.15mm, trench depth precision: ± 0.1mm.
Moreover, the socket full circle is to carry out high-precision full circle, diameter after full circle to socket using 2000 tons of expanding machines
And aimed dia deviation ± 0.5mm, ovality≤2mm.
Moreover, the socket end rounding is to carry out rounding to socket end using blending machine, chamfering radius is according to wall
Thickness adjustment: 3-15mm.
Moreover, the interior derusting uses impeller blasting, abrasive material used in Shot Blasting is stainless steel sand or steel sand, shot
Mixture, derusting grade reach Sa21/2Grade.
Moreover, the steel pipe is heated to 200-250 DEG C.
Moreover, the inside and outside plastic-coated is that steel pipe is sent into both sides' formula coating machine, fixture rotates steel tube clamping, using leaching
Painting or showering mode carry out the plastic-coated of outer wall and inner wall simultaneously.
Moreover, the socket joint connection structure includes bellmouth, socket, mounting groove and rubber ring, it is coaxial in the inner wall of bellmouth
It is formed with the mounting groove of an annular, is coaxially being embedded in rubber ring in mounting groove between bellmouth inner wall and receptacle wall.
The advantages and positive effects of the present invention are:
1. anti-corrosion pipe uses bell and spigot connection type, easy for construction, operating expenses is reduced.
2. anti-corrosion pipe caliber range is wide, heavy caliber anti-corrosive steel tube can be processed, processing bore reaches 2540mm, is suitable for not
Same feed-line.
3. anti-corrosion pipe can process the anti-corrosion pipe of different length, improve construction efficiency according to Construction Condition, to reduce
Operating expenses.
4. anti-corrosion pipe anti-corrosion processing uses inside and outside plastic-coated one-pass molding, high production efficiency, good product quality.Product surface
Smooth, transporting resistance is small, reduces system delivery pressure.
5. anti-corrosion pipe pipe end is without reserving, scene saves operating expenses without carrying out anticorrosive coating repaired mouth.
Detailed description of the invention
Fig. 1 is the bell and spigot connection figure of steel pipe of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology, the technological process of production is as follows:
Steel pipe enters X -ray inspection X → outer derusting → derust outside inspection → bellmouth it is expanding → bellmouth side pressure groove → bellmouth examines →
Socket full circle → socket end rounding → socket inspection → interior derusting → interior inside and outside wall micronic dust processing → steel of derusting inspection → steel pipe
Pipe heating → inside and outside plastic-coated → inspection → spray mark → pipe end packaging, protection → product inspection → outbound.
The socket joint connection structure is as shown in Figure 1, include bellmouth 1, socket 2, mounting groove 3 and rubber ring 4, in bellmouth
Inner wall is coaxially formed with the mounting groove of an annular, is coaxially being embedded in rubber ring in mounting groove between bellmouth inner wall and receptacle wall.It holds
Mouth uses the cold expanding molding of expanding machine, and port sizes precision is high.It is cold expanding rear using channelling machine processing rubber circle mounting groove, it is convenient for
The installation and fixation of sealing ring.Socket machines socket end portion using rounding, convenient for the docking of bell and spigot when construction.
Before derusting outside, steel pipe should be preheating to at least above 3 DEG C of dew-point temperature, to remove surface moisture, outer derusting is adopted
With impeller blasting, abrasive material used in Shot Blasting must should reach for stainless steel sand or the mixture of steel sand, shot, derusting grade
Sa21/2Grade.
It is expanding that high-precision cold carried out to bellmouth using 2000 tons of expanding machines, it is expanding after diameter and aimed dia deviation ±
0.5mm, ovality≤2mm.Expanding transitional region transition is gentle, unstressed concentration after pressure-bearing.
Groove is pressed at office pipe end 40mm using 1000 tons of book joint setting machines, groove width precision: ± 0.15mm, trench depth essence
Degree: ± 0.1mm.
High-precision full circle is carried out to socket using 2000 tons of expanding machines, diameter and aimed dia deviation ± 0.5mm after full circle,
Ovality≤2mm.
Rounding is carried out to socket end using blending machine, chamfering radius is adjusted according to wall thickness: 3-15mm.
Interior derusting uses impeller blasting, and abrasive material used in Shot Blasting must be stainless steel sand or the mixture of steel sand, shot, removes
Rust grade should reach Sa21/2Grade.
Micronic dust processing is carried out to steel pipe inside and outside wall using high pressure roots blower.
Steel pipe enters heating furnace, and steel pipe is uniformly heated to 200-250 DEG C.
Steel pipe enters coating machine, and fixture rotates steel tube clamping, carries out outer wall plastic-coated (both sides using dip-coating/showering mode
Formula coating machine), while inner wall carries out plastic-coated (both sides' formula coating machine) using showering/spray form, spraying rear surface uniform color,
Smooth, thickness is uniform.
Using the protector for end of liner film to pipe end packaging, protection.
This steel pipe detection result are as follows:
Thickness: thickness is uniform, and maximum and minimum thickness difference, which is less than, requires the 10% of thickness, saves raw material.
Adhesive force >=30N/10mm
Pin hole experiment is generated without electric spark
Impact experiment: hammering weight 6.3kg, height of fall 1000mm into shape, and coating flawless and removing occur.
Coating sample is bent, flattens experiment, coating flawless and removing occur.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, under the premise of not departing from inventive concept, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (1)
1. one kind can socket joint connection composite metal plastic corrosion-proof steel pipe production technology, it is characterised in that: process flow is as follows:
Steel pipe enters X -ray inspection X → outer derusting → derust outside inspection → bellmouth it is expanding → bellmouth side pressure groove → bellmouth inspection → socket
Full circle → socket end rounding → socket inspection → interior derusting → interior inside and outside wall micronic dust processing → steel pipe of derusting inspection → steel pipe adds
Heat → inside and outside plastic-coated → inspection → spray mark → pipe end packaging, protection → product inspection → outbound；
Socket joint connection structure includes bellmouth, socket, mounting groove and rubber ring, is coaxially formed with the installation of an annular in the inner wall of bellmouth
Slot is coaxially being embedded in rubber ring between bellmouth inner wall and receptacle wall in mounting groove, bellmouth uses the cold expanding molding of expanding machine, cold
Channelling machine processing rubber circle mounting groove is used after expanding, socket machines socket end portion using rounding；
Before derusting outside, steel pipe is preheating at least above 3 DEG C of dew-point temperature, to remove surface moisture, outer derusting uses ball blast
It derusts, abrasive material used in Shot Blasting is the mixture of stainless steel sand or steel sand, shot, and derusting grade reaches Sa2 grades；
It is expanding that high-precision cold carried out to bellmouth using 2000 tons of expanding machines, it is expanding after diameter and aimed dia deviation ± 0.5mm, it is ellipse
Circularity≤2mm,
Using 1000 tons of book joint setting machines away from pipe end 40mm press groove, groove width precision: ± 0.15mm, trench depth precision:
±0.1mm；
High-precision full circle is carried out to socket using 2000 tons of expanding machines, diameter and aimed dia deviation ± 0.5mm after full circle are oval
Degree≤2mm；
Rounding is carried out to socket end using blending machine, chamfering radius is adjusted according to wall thickness: 3-15mm；
Interior derusting uses impeller blasting, and abrasive material used in Shot Blasting is the mixture of stainless steel sand or steel sand, shot, derusting grade
Reach Sa2 grades；
Micronic dust processing is carried out to steel pipe inside and outside wall using high pressure roots blower；
Steel pipe enters heating furnace, and steel pipe is uniformly heated to 200-250 DEG C；
Steel pipe enters coating machine, and fixture rotates steel tube clamping, carries out outer wall plastic-coated, while inner wall using dip-coating or showering mode
Plastic-coated is carried out using showering or spray form；
Using the protector for end of liner film to pipe end packaging, protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199872.4A CN105710157B (en) | 2016-04-01 | 2016-04-01 | It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199872.4A CN105710157B (en) | 2016-04-01 | 2016-04-01 | It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105710157A CN105710157A (en) | 2016-06-29 |
| CN105710157B true CN105710157B (en) | 2019-08-27 |
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| CN201610199872.4A Active CN105710157B (en) | 2016-04-01 | 2016-04-01 | It is a kind of can socket joint connection composite metal plastic corrosion-proof steel pipe production technology |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111998142A (en) * | 2020-09-09 | 2020-11-27 | 山东金诚联创管业股份有限公司 | Production process of wound 3PE faucet steel pipe |
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| CN2185359Y (en) * | 1994-03-29 | 1994-12-14 | 中国石油天然气总公司工程技术研究所 | Spigot-and-socket jointed internal corrosion-proof steel pipe parts and joints thereof |
| NL1006313C2 (en) * | 1997-06-13 | 1998-12-15 | Wavin Bv | Pipe connection. |
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| CN200986078Y (en) * | 2006-12-22 | 2007-12-05 | 上海一亿沟槽管件有限公司 | Steel and plastic composite steel tube having anti-corrosive joint terminal port |
| CN202852266U (en) * | 2012-07-20 | 2013-04-03 | 江苏省恒久管道有限公司 | Plastic-coated steel pipe socket type joint |
| CN203413258U (en) * | 2013-08-20 | 2014-01-29 | 山东莱德机械有限公司 | Connection sealing structure of steel plastic composite pipe |
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Patent Citations (7)
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|---|---|---|---|---|
| CN1417507A (en) * | 2001-11-08 | 2003-05-14 | 李志雄 | Production process of composite plastic-steel pipe with anti-corrosive coating |
| CN1469072A (en) * | 2002-07-15 | 2004-01-21 | 秦立华 | Steel-plastic pipe union and its production process |
| CN2905237Y (en) * | 2006-03-17 | 2007-05-30 | 姜宜川 | Interior and exterior spray coating device for large-diameter steel plastic composite pipe |
| CN201431937Y (en) * | 2009-06-15 | 2010-03-31 | 李义财 | Inner-outer spraying device of large-caliber pipeline |
| CN101844164A (en) * | 2010-04-30 | 2010-09-29 | 浙江广涛卫厨有限公司 | Production process of quick connecting pipe |
| CN204477550U (en) * | 2014-12-19 | 2015-07-15 | 贾春生 | A kind of limit-type flexible socket joint plastic-coated steel joint and plastic-coated steel |
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| CN105710157A (en) | 2016-06-29 |
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| CP03 | "change of name, title or address" |
Address after: 500m west of zhujiafangfang village, caigongzhuang Town, Jinghai District, Tianjin Patentee after: Tianjin Science and Construction Antiseptic Technology Co.,Ltd. Address before: 301606 Industrial Park, caigongzhuang Town, Jinghai County, Tianjin Patentee before: TIANJIN KEJIAN ANTI-CORROSION INSULATION ENGINEERING Co.,Ltd. |
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| CP03 | "change of name, title or address" |