CN105710157A - Steel-plastic composite anti-corrosive steel pipe with bell-and-spigot joint function - Google Patents
Steel-plastic composite anti-corrosive steel pipe with bell-and-spigot joint function Download PDFInfo
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- CN105710157A CN105710157A CN201610199872.4A CN201610199872A CN105710157A CN 105710157 A CN105710157 A CN 105710157A CN 201610199872 A CN201610199872 A CN 201610199872A CN 105710157 A CN105710157 A CN 105710157A
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- steel pipe
- inspection
- socket
- bellmouth
- composite metal
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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 invention relates to a steel-plastic composite anti-corrosive steel pipe with a bell-and-spigot joint function. A production process of the steel-plastic composite anti-corrosive steel pipe comprises the following steps: radiographic testing of a steel pipe; external derusting; external derusting inspection; bell diameter expansion; groove pressing at the bell end; bell inspection; spigot rounding; chamfering of the spigot end part; spigot inspection; internal derusting; internal derusting inspection; removal of tiny dust on the inner and outer walls of the steel pipe; heating of the steel pipe; internal and external plastic coating; inspection; inkjet printing; pipe end packaging and protection; finished product inspection; and delivery. According to the production process, a large-diameter anti-corrosive steel pipe, namely the steel-plastic composite anti-corrosive steel pipe provided by the invention, can be produced; the steel-plastic composite anti-corrosive steel pipe is safe and reliable to use, and has the advantages that the construction is convenient, the inner wall is smooth, the conveying resistance is low, the scaling possibility is low, and the price/performance ratio is high; and steel pipes of different lengths can be produced according to the construction conditions, so as to improve the construction efficiency.
Description
Technical field
The invention belongs to steel pipe field, relate to anti-corrosive steel tube, especially a kind of can socket joint connect composite metal plastic corrosion-proof steel pipe.
Background technology
Along with international Urbanization Progress, water supply, drainage pipeline networks pipe amount are continuously increased.Supply water at present, drainage pipeline networks mostly adopts spheroidal graphite cast-iron anti-corrosion pipe and welding anti-corrosive steel tube.
Spheroidal graphite cast-iron anti-corrosion pipe mounting means is that bell and spigot connects, safe and reliable, easy construction, is particularly applied to desert and the area of construction inconvenience.But, owing to spheroidal graphite cast-iron pipe casing forms, caliber is restricted；Spheroidal graphite cast-iron anti-corrosion pipe inner wall coarse causes transporting resistance fouling big, easy, and anti-corrosion pipe cost performance is low；The anticorrosion type that spheroidal graphite cast-iron anti-corrosion pipe can be processed is few, and antiseptic effect and pipeline service life are limited；Length of tube is 6 meters mostly, and efficiency of construction is low, and construction cost is high.
Welding anti-corrosive steel tube machinable anticorrosion type is many, and favorable anti-corrosion effect, pipeline service life is long.Anti-corrosion pipe inner wall smooth, transporting resistance is little, less scaling, and anti-corrosion pipe cost performance is high.The steel pipe of different length can be produced according to execution conditions, improve the efficiency of construction.But, welding anti-corrosive steel tube connects needs welding, needs reserved end is carried out repaired mouth after welding, and operating expenses is high, and difficulty is big, cannot construct in the area of a lot of execution conditions difference.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, it is provided that a kind of can socket joint connect composite metal plastic corrosion-proof steel pipe, heavy caliber anti-corrosive steel tube can be produced, safe and reliable, easy construction, inner wall smooth, transporting resistance is little, less scaling, and anti-corrosion pipe cost performance is high.The steel pipe of different length can be produced according to execution conditions, improve the efficiency of construction.
This invention address that technical problem be the technical scheme is that
A kind of can the composite metal plastic corrosion-proof steel pipe that connects of socket joint, the technological process of production is as follows: steel pipe enter the X-ray inspection X → inspection → bellmouth that eliminate rust → eliminates rust outward outward expanding → bellmouth side pressure groove → bellmouth inspection → socket full circle → socket end rounding → socket inspection → interior rust cleaning → interior rust cleaning inspection → steel pipe inside and outside wall micronic dust process → steel pipe heating → inside and outside plastic-coated → inspection → spray mark → pipe end packs, protection → product inspection → outbound.
And, outside before rust cleaning, steel pipe being preheating to higher than dew point temperature 3 DEG C, remove surface moisture, outer rust cleaning adopts impeller blasting, and abrasive material used by Shot Blasting is stainless steel sand or the mixture of steel sand, shot, and derusting grade reaches Sa21/2Level.
And, described bellmouth is expanding is that to adopt 2000 tons of expanding machines that bellmouth carries out high-precision cold expanding, expanding rear diameter and aimed dia deviation ± 0.5mm, ovality≤2mm, and expanding transitional region transition is mild, unstressed concentration after pressure-bearing.
And, described bellmouth side pressure groove is to use 1000 tons of book joint setting machines to press groove, groove width precision: ± 0.15mm, gash depth precision: ± 0.1mm at pipe end 40mm place of office.
And, described socket full circle is to use 2000 tons of expanding machines that socket carries out high accuracy full circle, diameter and aimed dia deviation ± 0.5mm, ovality≤2mm after full circle.
And, described socket end rounding is to use blending machine that socket end is carried out rounding, and chamfering radius is according to wall thickness adjustment: 3-15mm.
And, described interior rust cleaning adopts impeller blasting, and abrasive material used by Shot Blasting is stainless steel sand or the mixture of steel sand, shot, and derusting grade reaches Sa21/2Level.
And, described steel pipe is heated to 200-250 DEG C.
And, described inside and outside plastic-coated is that steel pipe is sent into both sides' formula coating machine, and steel tube clamping is rotated by fixture, adopts dip-coating or showering mode to carry out the plastic-coated of outer wall and inwall simultaneously.
And, described socket joint attachment structure includes bellmouth, socket, mounting groove and rubber ring, and the inwall at bellmouth is coaxially shaped with the mounting groove of an annular, is coaxially embedded in rubber ring in mounting groove between bellmouth inwall and receptacle wall.
Advantages of the present invention and having the benefit effect that
1. this anti-corrosion pipe uses bell and spigot connected mode, easy construction, reduces operating expenses.
2. this anti-corrosion pipe caliber scope is wide, can process heavy caliber anti-corrosive steel tube, and processing bore reaches 2540mm, it is adaptable to different feed-lines.
3. this anti-corrosion pipe according to Construction Condition, can process the anti-corrosion pipe of different length, improves efficiency of construction, thus reducing operating expenses.
4. the processing of this anti-corrosion pipe anticorrosion adopts inside and outside plastic-coated one-shot forming, and production efficiency is high, good product quality.Product surface is smooth, and transporting resistance is little, reduces system delivery pressure.
5. this anti-corrosion pipe pipe end is without reserved, on-the-spot without carrying out anticorrosive coating repaired mouth, saves operating expenses.
Accompanying drawing explanation
Fig. 1 is the bell and spigot connection figure of steel pipe of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, the invention will be further described, and following example are illustrative, are not determinate, it is impossible to limit protection scope of the present invention with this.
A kind of can socket joint connect composite metal plastic corrosion-proof steel pipe, the technological process of production is as follows:
Steel pipe enter the X-ray inspection X → inspection → bellmouth that eliminate rust → eliminates rust outward outward expanding → bellmouth side pressure groove → bellmouth inspection → socket full circle → socket end rounding → socket inspection → interior rust cleaning → interior rust cleaning inspection → steel pipe inside and outside wall micronic dust process → steel pipe heating → inside and outside plastic-coated → inspection → spray mark → pipe end packs, protection → product inspection → outbound.
Described socket joint attachment structure is as it is shown in figure 1, include bellmouth 1, socket 2, mounting groove 3 and rubber ring 4, and the inwall at bellmouth is coaxially shaped with the mounting groove of an annular, is coaxially embedded in rubber ring in mounting groove between bellmouth inwall and receptacle wall.Bellmouth adopts the cold expanding molding of expanding machine, and port sizes precision is high.Cold expanding after use channelling machine processing rubber circle mounting groove, it is simple to the installation of sealing ring and fixing.Socket uses blending machine processing socket end, it is simple to the docking of bell and spigot during construction.
Outside before rust cleaning, should being preheating to by steel pipe at least above dew point temperature 3 DEG C, to remove surface moisture, outer rust cleaning adopts impeller blasting, and abrasive material used by Shot Blasting must be stainless steel sand or the mixture of steel sand, shot, and derusting grade should reach Sa21/2Level.
Use 2000 tons of expanding machines that bellmouth carries out high-precision cold expanding, expanding rear diameter and aimed dia deviation ± 0.5mm, ovality≤2mm.Expanding transitional region transition is mild, unstressed concentration after pressure-bearing.
1000 tons of book joint setting machines are used to press groove, groove width precision: ± 0.15mm, gash depth precision: ± 0.1mm at pipe end 40mm place of office.
Use 2000 tons of expanding machines that socket carries out high accuracy full circle, diameter and aimed dia deviation ± 0.5mm, ovality≤2mm after full circle.
Using blending machine that socket end is carried out rounding, chamfering radius is according to wall thickness adjustment: 3-15mm.
Interior rust cleaning adopts impeller blasting, and abrasive material used by Shot Blasting must be stainless steel sand or the mixture of steel sand, shot, and derusting grade should reach Sa21/2Level.
Use high pressure roots blower that steel pipe inside and outside wall is carried out micronic dust process.
Steel pipe enters heating furnace, and steel pipe is uniformly heated to 200-250 DEG C.
Steel pipe enters coating machine, steel tube clamping is rotated by fixture, dip-coating/showering mode is adopted to carry out outer wall plastic-coated (both sides' formula coating machine), inwall adopts showering/spray form to carry out plastic-coated (both sides' formula coating machine) simultaneously, spraying rear surface uniform color, smooth, thickness is uniform.
Pipe end is packed by the protector for end using liner film, protection.
This steel pipe detection result is:
Thickness: thickness is uniform, maximum poor with minimum thickness less than the 10% of required thickness, economizes in raw materials.
Adhesive force >=30N/10mm
Pin hole experiment produces without electric spark
Impact experiment: hammer weight 6.3kg, height of fall 1000mm, coating flawless and stripping occur.
Coating sample is bent, flattens experiment, coating flawless and stripping appearance.
Above-described is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, under the premise without departing from inventive concept, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (10)
1. one kind can the composite metal plastic corrosion-proof steel pipe that connects of socket joint, it is characterised in that: the technological process of production is as follows: steel pipe enter the X-ray inspection X → inspection → bellmouth that eliminate rust → eliminates rust outward outward expanding → bellmouth side pressure groove → bellmouth inspection → socket full circle → socket end rounding → socket inspection → interior rust cleaning → interior rust cleaning inspection → steel pipe inside and outside wall micronic dust process → steel pipe heating → inside and outside plastic-coated → inspection → spray mark → pipe end packs, protection → product inspection → outbound.
2. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterized in that: outside before rust cleaning, steel pipe is preheating to higher than dew point temperature 3 DEG C, remove surface moisture, outer rust cleaning adopts impeller blasting, abrasive material used by Shot Blasting is stainless steel sand or the mixture of steel sand, shot, and derusting grade reaches Sa21/2Level.
3. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterized in that: described bellmouth is expanding is that to adopt 2000 tons of expanding machines that bellmouth is carried out high-precision cold expanding, expanding rear diameter and aimed dia deviation ± 0.5mm, ovality≤2mm, expanding transitional region transition is mild, unstressed concentration after pressure-bearing.
4. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterized in that: described bellmouth side pressure groove is to use 1000 tons of book joint setting machines to press groove at pipe end 40mm place of office, groove width precision: ± 0.15mm, gash depth precision: ± 0.1mm.
5. according to claim 1 can the composite metal plastic corrosion-proof steel pipe that connects of socket joint, it is characterised in that: described socket full circle is to use 2000 tons of expanding machines that socket carries out high accuracy full circle, diameter and aimed dia deviation ± 0.5mm, ovality≤2mm after full circle.
6. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterised in that: described socket end rounding be use blending machine socket end is carried out rounding, chamfering radius is according to wall thickness adjustment: 3-15mm.
7. according to claim 1 can the composite metal plastic corrosion-proof steel pipe that connects of socket joint, it is characterised in that: described interior rust cleaning adopts impeller blasting, and abrasive material used by Shot Blasting is stainless steel sand or the mixture of steel sand, shot, and derusting grade reaches Sa21/2Level.
8. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterised in that: described steel pipe is heated to 200-250 DEG C.
9. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterized in that: described inside and outside plastic-coated is that steel pipe is sent into both sides' formula coating machine, steel tube clamping is rotated by fixture, adopts dip-coating or showering mode to carry out the plastic-coated of outer wall and inwall simultaneously.
10. according to claim 1 can socket joint connect composite metal plastic corrosion-proof steel pipe, it is characterized in that: described socket joint attachment structure includes bellmouth, socket, mounting groove and rubber ring, inwall at bellmouth is coaxially shaped with the mounting groove of an annular, is coaxially embedded in rubber ring in mounting groove between bellmouth inwall and receptacle wall.
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 true CN105710157A (en) | 2016-06-29 |
| CN105710157B CN105710157B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN105710157B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| WO1998057089A1 (en) * | 1997-06-13 | 1998-12-17 | Wavin B.V. | Pipe joint |
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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 |
| WO1998057089A1 (en) * | 1997-06-13 | 1998-12-17 | Wavin B.V. | Pipe joint |
| EP1095225B1 (en) * | 1998-07-09 | 2002-05-22 | Von Roll Holding AG | Locked socket joint |
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| CN1469072A (en) * | 2002-07-15 | 2004-01-21 | 秦立华 | Steel-plastic pipe union and its production process |
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| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
|---|---|
| CN105710157B (en) | 2019-08-27 |
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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. |