CN101463932B - Composite steel pipe with polythene hollow winding structured wall and its processing technique - Google Patents
Composite steel pipe with polythene hollow winding structured wall and its processing technique Download PDFInfo
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- CN101463932B CN101463932B CN2009100676329A CN200910067632A CN101463932B CN 101463932 B CN101463932 B CN 101463932B CN 2009100676329 A CN2009100676329 A CN 2009100676329A CN 200910067632 A CN200910067632 A CN 200910067632A CN 101463932 B CN101463932 B CN 101463932B
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- anticorrosive coating
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Abstract
The invention relates to a polyethylene hollow wound structure wall composite steel pipe. A polyethylene anticorrosive coating is arranged on the outer wall of the steel pipe body, and resin glue bonding layer is coated between the polyethylene anticorrosive coating and the outer wall of the steel pipe body. The innovation point of the composite steel pipe is as follows: the outer part of the polyethylene anticorrosive coating is wound with a tubular hollow structure polyethylene spiral rib. The composite steel pipe has the outstanding advantages of scientific and reasonable structure design, high loop stiffness, material saving, easy mounting, reasonable price and the like. A polyethylene thermal state winding forming process is adopted in the machining process of the polyethylene hollow wound structure wall composite steel pipe, a sheet tape and a tubular hollow tape are extruded and prepared by a plastic extruding machine, and the sheet tape and the hollow tape are wound in parallel, thus the polyethylene anticorrosive coating and the tubular hollow structure polyethylene spiral rib are prepared by thermal state integrated forming. The composite steel pipe has the advantages of high quality of welded joints, simple process, low equipment investment, low cost and the like; meanwhile, the machining process can help save much polyethylene raw materials.
Description
Technical field
The invention belongs to the steel pipe processing technique field, particularly a kind of polyethylene hollow winding structure composite steel tube and processing technology thereof.
Background technique
For a long time, the water supply in city and gas transmission pipeline net work adopt the tubing of steel pipe as fed sheet of a media mostly, but traditional steel pipe is an individual layer steel tubular goods structure, and there are many drawbacks in it in engineering is used, be mainly reflected in that intensity is low, wall is coarse, perishable, working life is short etc.Therefore, for overcoming the existing deficiency of above-mentioned monolayer steel pipe, improved steel pipe all adopts the composite steel tube that is shaped on the plastics anticorrosive coat, it has advantages such as intensity height, wall be smooth, corrosion-resistant, therefore on engineering, use comparatively general, but there is the deficiency that pipe thickness is big, pipe is great in this kind structure composite steel tube, causes composite steel tube to occur destabilization problems easily, increases difficulty of construction.In existing high-density polyethylene plastics tubing manufacture field, the hot Wrapping formed mode of existing employing is made polyethylene evagination spiral at the tube wall outer circumferential face and is strengthened rib, improve the tubing ring stiffness thus, solve destabilization problems, but the made polyethylene evagination of its tube wall of above-mentioned plastic tube spiral is strengthened rib and is solid rib, if be used for the steel pipe field then its further pipe thickness and Guan Chong of increasing, thereby increase construction cost and difficulty, be unsuitable for being applied to the steel pipe field, also exist the polyethylene consumption big simultaneously, the high deficiency of cost of production is unfavorable for the raising of economic benefit of enterprises.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and be shaped on the polyethylene hollow winding structure composite steel tube of hollow structure spiral ribbed steel wire at outer wall of steel pipe, its have intensity height, wall thickness little, in light weight, be convenient to outstanding advantages such as construction, cost be low; A kind of polyethylene hollow winding structure composite steel tube processing technology also is provided simultaneously, it adopts the polyethylene helical rib of the hot Wrapping formed production technology of polyethylene at the one-body molded processing tubulose of tube wall hollow structure, has that technology is simple, a conservation, welded seam quality advantages of higher.
A kind of polyethylene hollow winding structure composite steel tube, be shaped on polyethylene anticorrosive coating at steel pipe body outer wall, between polyethylene anticorrosive coating and steel pipe body outer wall, scribble the resin glue adhesive layer, it is characterized in that: be wound with cannulated structure polyethylene helical rib in the polyethylene anticorrosive coating outside.
And, evenly be coated with the internal plastic coating layer in the steel pipe inner body wall.
And the sectional shape of the polyethylene helical rib of described cannulated structure is circular pipe, square tubular, laddertron, triangle tube.
A kind of polyethylene hollow winding structure composite steel tube processing technology, comprise tube wall sand blast, the coating of tube wall resin glue, it is characterized in that: this technology is further comprising the steps of: in the resin glue coating simultaneously, will by molding machine extrude out flat strip and cannulated strip by the precalculated position side by side uniform winding scribbling on the tube wall of resin glue polyethylene anticorrosive coating and the hot once-through of cannulated structure spiral ribbed steel wire.
And, after polyethylene anticorrosive coating and the hot once-through of cannulated structure spiral ribbed steel wire, also comprise the internal plastic coating layer spraying step of inboard wall of tube body.
And the sectional shape of the cannulated strip that described extruder is extruded is circular pipe, square tubular, laddertron, triangle tube.
Advantage of the present invention and good effect are:
1. this polyethylene hollow winding structure composite steel tube adopts and has the stiffening rib of the polyethylene helical rib of cannulated structure as composite steel tube, adopt solid spiral ribbed steel wire, it is about 30% to reduce thickness of steel pipe, and it is about 20% to alleviate steel pipe weight, significantly reduces construction labor intensity thus.
2. this polyethylene hollow winding structure composite steel tube adopts and has the stiffening rib of the spiral ribbed steel wire of hollow structure as composite steel tube, on the basis of satisfying the required minimum wall thickness (MINI W.) of fed sheet of a media pressure, guarantee the tubing ring stiffness, thereby avoid tubing unstability to occur, simultaneously have root resistance effect again, solved pipeline vertical shift problem.
3. the scientific structure design of this polyethylene hollow winding structure composite steel tube is reasonable, advantage separately such as high strength, high elastic modulus and the polyethylene of steel is in light weight, that resistance coefficient is little, corrosion-resistant, conveyance power of water strong, good seal performance, long service life, easy transportation and installation and speed of application are fast integrates, have outstanding advantages such as ring stiffness height, material saving, easily installation, moderate cost, also have green clean simultaneously, advantages such as the maintenance source quality is not contaminated help improving drinking water quality and people ' s health level.
4. this polyethylene hollow winding structure composite steel tube processing technology adopts the hot winding shaping process of polyethylene, extrude out flat strip and cannulated strip by extruder, carry out the parallel winding of flat strip and hollow strip, hot thus one-body molded go out polyethylene anticorrosive coating and cannulated structure polyethylene helical rib, have welded seam quality height, technology is simple, equipment investment is little, low cost and other advantages, the use amount that this processing technology of while can be saved big weight northylen raw material, further reduce production costs, improve business economic benefit and competitive strength.
Description of drawings
Fig. 1 is the structural representation (the spiral ribbed steel wire cross section is circular) of polyethylene hollow winding structure composite steel tube of the present invention;
Fig. 2 is the structural representation (the spiral ribbed steel wire cross section is square) of polyethylene hollow winding structure composite steel tube of the present invention;
Fig. 3 is the structural representation (the spiral ribbed steel wire cross section is trapezoidal) of polyethylene hollow winding structure composite steel tube of the present invention;
Fig. 4 is the structural representation (the spiral ribbed steel wire cross section is a triangle) of polyethylene hollow winding structure composite steel tube of the present invention.
Embodiment
The invention will be further described by specific embodiment below in conjunction with accompanying drawing.Following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of polyethylene hollow winding structure composite steel tube, be shaped on polyethylene anticorrosive coating 2 at steel pipe body 4 outer walls, between polyethylene anticorrosive coating and steel pipe body outer wall, scribble resin glue adhesive layer 3, its innovative point is: be wound with cannulated structure polyethylene helical rib 1 in the polyethylene anticorrosive coating outside, the sectional shape of this spiral ribbed steel wire is circular pipe, square tubular, laddertron, triangle tube, as shown in Fig. 1-4, can certainly be the cannulated structure of other arbitrary shape.Be shaped on internal plastic coating layer 5 in the steel pipe inner body wall, this internal plastic coating layer is a polyurea layer, can improve the degree of finish of steel pipe inner body wall, has anti-corrosion function simultaneously.
The production technology of polyethylene hollow winding structure composite steel tube of the present invention comprises the steps:
(1). the wall of body is carried out sand blast;
(2). adopt the hot winding shaping process of polyethylene, the flat strip that to extrude from extruder mouth mould and cannulated strip by the precalculated position side by side uniform winding scribbling on the tube wall of resin glue, flat strip twines prior to the cannulated strip, the cannulated strip is wound in flat strip and twines that the back is formed melts the seam place, thereby makes this composite steel tube skin have higher welded seam quality.Polyethylene anticorrosive coating and the hot once-through of cannulated structure polyethylene helical rib, the pitch of spiral ribbed steel wire pipe can be adjusted according to different requirement of engineering.Extruder adopts the existing double flow channel extruder of moulding in the pipe processing, and its flat mouthful mould and tubulose mouth mould are extruded a flat strip and a cannulated strip respectively.
(3). before flat strip twines, progressively carry out the coating of resin glue adhesive layer, realize the secure bond of polyethylene anticorrosive coating and tube wall thus at tube wall.
(4). the body that will finish after polyethylene anticorrosive coating and cannulated polyethylene helical rib twine cools off.
(5). after polyethylene anticorrosive coating and the hot once-through of cannulated structure spiral ribbed steel wire, inboard wall of tube body is carried out the internal layer spraying mould, make the internal plastic coating layer, this internal plastic coating layer is a polyurea layer.
This processing technology adopts the hot winding shaping process of polyethylene, extrude flat strip and cannulated strip by the dual channel extruding machine, with the two parallel winding, thus hot one-body molded go out polyethylene anticorrosive coating and cannulated structure polyethylene helical rib, have that equipment investment is little, cost is low, the simple advantage of technology, the use amount that this processing technology of while can be saved big weight northylen raw material further reduces cost, and improves Business Economic Benefit and competitive strength.
Claims (3)
1. polyethylene hollow winding structure composite steel tube processing technology, comprise tube wall sand blast, the coating of tube wall resin glue, it is characterized in that: this technology is further comprising the steps of: in the resin glue coating simultaneously, will by extruder make flat strip and cannulated strip by the precalculated position side by side uniform winding scribbling on the tube wall of resin glue polyethylene anticorrosive coating and the hot once-through of cannulated structure polyethylene helical rib.
2. polyethylene hollow winding structure composite steel tube processing technology according to claim 1, it is characterized in that: after polyethylene anticorrosive coating and the hot once-through of cannulated structure polyethylene helical rib, also comprise the internal plastic coating layer spraying step of inboard wall of tube body.
3. polyethylene hollow winding structure composite steel tube processing technology according to claim 1, it is characterized in that: the sectional shape of the cannulated strip that described extruder is extruded is circular pipe, square tubular, laddertron or triangle tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100676329A CN101463932B (en) | 2009-01-07 | 2009-01-07 | Composite steel pipe with polythene hollow winding structured wall and its processing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100676329A CN101463932B (en) | 2009-01-07 | 2009-01-07 | Composite steel pipe with polythene hollow winding structured wall and its processing technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101463932A CN101463932A (en) | 2009-06-24 |
| CN101463932B true CN101463932B (en) | 2010-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100676329A Active CN101463932B (en) | 2009-01-07 | 2009-01-07 | Composite steel pipe with polythene hollow winding structured wall and its processing technique |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737570B (en) * | 2010-02-11 | 2012-04-25 | 韩子斌 | Glass fiber and polyethylene composite reinforced polyethylene spirally enwound structure-wall tubular product |
| CN102095025B (en) * | 2011-01-31 | 2012-05-23 | 石家庄宝石克拉大径塑管有限公司 | Tube in shape like Chinese character 'pin' with polyethylene winding structure wall and production process thereof |
| CN103791173A (en) * | 2012-10-31 | 2014-05-14 | 安徽万安环境工程有限公司 | Polyethylene winding structure wall pipe with enhanced internal ribs and enhanced steel belts |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN NACHUAN PIPE MATERIAL CO., LTD. Free format text: FORMER NAME: TIANJIN TAIBANG PIPE CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 301600 Tianjin City Economic Development Zone Jinghai County No. 17 gold Hokkaido Patentee after: Tianjin Nachuan Pipe Co., Ltd. Address before: 301600 Tianjin City Economic Development Zone Jinghai County gold Hokkaido Patentee before: Tianjin Taibang Pipe Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190220 Address after: 362000 Pu an industrial area, Quangang District, Quanzhou, Fujian. Patentee after: Fujian Nachuan pipe technology limited liability company Address before: 301600 Jinhai Road 17, Jinghai Economic Development Zone, Tianjin Patentee before: Tianjin Nachuan Pipe Co., Ltd. |