CN1412465A - Steel-plastics composite pressure pipe and its production method - Google Patents
Steel-plastics composite pressure pipe and its production method Download PDFInfo
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- CN1412465A CN1412465A CN 01136217 CN01136217A CN1412465A CN 1412465 A CN1412465 A CN 1412465A CN 01136217 CN01136217 CN 01136217 CN 01136217 A CN01136217 A CN 01136217A CN 1412465 A CN1412465 A CN 1412465A
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Abstract
The steel plastics composite pressure pipe includes external plastic layer, external adhesive layer, internal adhesive layer and internal plastic layer, between external adhesive layer and internal adhesive layer there is a galvanized or aluminium-plated steel tape. Its production method includes the following steps: preparing steel pipe, blanking, cleaning welded two edges, removing aluminium and zinc, at the same time of extruding to obtain formed pipe, coating thermal sol, high-frequency heating, pressing and coating external plastic layer for resisting corrosion so as to obtain the invented steel plastic composite pressure pipe.
Description
Technical field
The present invention relates to the rigidity pipe, specifically, relate to a kind of steel-plastic composite pressure pipe and production method thereof.
Background technique
The composite pressure pipe industry is divided into two big classes basically at present, and a class is a plastic-aluminum composite pressure pipe, and another kind of is steel-plastic composite pressure pipe.After bore was greater than 32mm, steel-plastic composite pressure pipe made its cost performance be much better than other metal-plastic composite pressure pipe with its higher voltage endurance capability and lower manufacture cost.The steel-plastic composite pressure pipe that occurs on the market mainly contains following several types now: the interior poly steel-plastic composite pressure pipe of the steel-plastic composite pressure pipe of the steel-plastic composite pressure pipe of steel wire mesh frame formula, orifice-plate type welded tube, the steel-plastic composite pressure pipe of five-layer structure and outer stainless steel etc.These steel-plastic composite pressure pipes all have its advantage separately, and have also played certain effect in development and national economy.But they all exist very big problem, and wherein, some problem is fatal problem to it.
The deficiency of its existence of steel-plastic composite pressure pipe of steel-wire carcass formula is compound polyethylene layer must be born part in the using process of pipeline pressure-bearing effect.Owing to must have the plastic layer of enough thickness, cause manufacturing cost and use cost to raise, the variation of serviceability temperature or ambient temperature has a strong impact on the bearing capacity of body, and the manufacturing process complexity, and quality control is difficulty comparatively.
Though the steel-plastic composite pressure pipe of orifice-plate type welded tube is simpler than the steel-plastic composite pressure pipe manufacturing process of steel-wire carcass formula, quality control is relatively easy.But still fail to solve the problem of plastic layer as bearing course, make the bearing capacity of body still be subjected to the influence of serviceability temperature and environment.
The five-layer structure steel-plastic composite pressure pipe has overcome the shortcoming of above-mentioned two kinds of pipes, but it has a fatal deficiency, promptly because this kind pipe mesosphere is that the plain carbon steel tape welding connects the steel pipe that forms, when being used for transporting water or Korrosionsmedium for a long time or be used in moist environment, because of poly oxygen flow characteristic as interior outer plastic layer, cause steel tube surface in weak oxide atmosphere, to produce oxidation at a low price, form and dredge the ferrous oxidation layer that send.Because the formation of corrosion layer causes steel to mould the glue-line inefficacy that interlayer plays cementation, thereby the steel pipe layer is separated with inside and outside polyethylene layer, makes plastic layer lose due protective action.
Though the polyethylene steel plastic composite pressure pipe has solved the problem that pressure-bearing and steel are moulded layering in the outer stainless steel, its price is more much higher than the price of above-mentioned several pipes.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of withstand voltage height, corrosion protection, steel-plastic composite pressure pipe that cost is low are provided.
Another object of the present invention provides a kind of method of producing steel-plastic composite pressure pipe.
Steel-plastic composite pressure pipe of the present invention comprise outer plastic layer, outer glue-line, inner glue layer and in mould layer, have the two sides outside between glue-line and the inner glue layer and all be coated with the zinc-plated of zinc or aluminium or the steel band of aluminizing.
Described outer plastic layer and in mould the layer be polyethylene layer or crosslinked polyethylene layer.
Described outer glue-line and inner glue layer are heat-fusing glue layers.
Manufacturing steel of the present invention is moulded the method for compounding pressure steel pipe, comprising:
1) in the 1st step, makes the zinc-plated or steel pipe of aluminizing of moulding layer in the band
(1) blanking is processed into the zinc-plated of required width or the steel band of aluminizing with zinc-plated or aludip by the diameter of the steel-plastic composite pressure pipe of required making;
(2) remove zinc or the aluminium zinc-plated or two edges that the steel band of aluminizing need weld, so that weld seam has comprehensive mechanical performance preferably;
(3) under the extruding of forming forming rolls, zinc-plated or the steel band of aluminizing are rolled into tubulose more, simultaneously, insert synchronously by extruder extrude and scribble hot melt adhesive in mould layer and manage;
(4) welding, the steel pipe of moulding layer pipe in the having of forming is welded together, make it into and mould the zinc-plated of layer pipe or the steel pipe of aluminizing in the as a whole band, during welding, before soldering point certain limit install additional one make scribble glue in mould the device that layer pipe and steel pipe are isolated certain distance.
2) in the 2nd step, form the seven-layer structure steel-plastic composite pressure pipe
(1) will by the first step produce have in mould layer pipe steel pipe by heating generator, mould layer pipe and zinc-plated or the hot melt adhesive secondary fusion between steel pipe of aluminizing in making, mould the bonding of layer pipe and zinc-plated or the steel pipe of aluminizing in the realization;
(2) outside zinc-plated or the steel pipe of aluminizing, apply bonding outer plastic layer of one deck and the hot melt adhesive zinc-plated or steel pipe of aluminizing;
(3) outside the above-mentioned pipe that coats hot melt adhesive, apply the corrosion-resistant outer plastic layer.
Wherein, described processing method zinc-plated or aludip is:
1) blanking becomes the blank steel band with steel plate by the circumferential length blanking greater than the steel pipe of required making approximately;
2) rolling leveling steel band;
3) to the steel band oil removing, so that steel band combines zinc or aluminium and steel band when spending zinc or aluminizing better;
4) carry out zinc-plated to leveling except the steel band of oil or aluminize.
Making of in welding process, using scribble glue in mould the device that layer pipe and steel pipe isolate certain distance and comprise a flat steel pipe, this pipe is connected with induced draught fan by a pipeline.
Steel-plastic composite pressure pipe of the present invention has following advantage:
1, because the bearing course in the middle of the steel-plastic composite pressure pipe of seven-layer structure of the present invention is whole steel pipe, so withstand voltage height, again because the polyethylene layer of seven-layer structure steel-plastic composite pressure pipe internal and external layer does not play the pressure-bearing effect, only play antisepsis, so inside and outside polyethylene layer is much thinner than the polyethylene layer of the steel-plastic composite pressure pipe of steel wire mesh frame formula, so price is low;
2, because the used steel pipe of steel-plastic composite pressure pipe of seven-layer structure of the present invention is zinc-plated or the steel pipe of aluminizing, this coating has fabulous antisepsis under weak oxide atmosphere, thereby has prevented that effectively the five-layer structure steel from moulding the corrosion of pipe invar pipe and causing steel to mould the interlayer phenomenon of coming unglued;
3, because the employed steel pipe of steel-plastic composite pressure pipe of seven-layer structure of the present invention is lower than stainless steel price, so have better economic benefit;
4, method of the present invention is simple, owing to used the attached device that helps of special-purpose welding in welding, the glue-line of pipe in the gluing is unlikely by the scaling loss charing, makes weld seam carburetting, causes the intensity of weld seam to increase the toughness reduction; Induced draught fan is extracted near produce because of welding the welding region zine oxide and other dust and smog out by flat steel pipe, thereby avoids moulding in dust and the smog influence the bonding of layer and steel pipe.
Description of drawings
Fig. 1 is the structural representation of steel-plastic composite pressure pipe of the present invention;
Fig. 2 is the schematic representation of processing method of the present invention and equipment thereof.
Embodiment
Referring to Fig. 1, steel-plastic composite pressure pipe of the present invention, comprise outer plastic layer 1, outer glue-line 2, inner glue layer 6 and in mould layer 7, have between glue-line and the inner glue layer outside that the two sides all is coated with the zinc-plated of zinc or aluminium or the steel band 4 of aluminizing.Like this, steel-plastic composite pressure pipe of the present invention has seven layers, that is, outer plastic layer 1, outer glue-line 2, outer zinc layer or aluminium lamination 3, steel belt layer 4, interior zinc layer or aluminium lamination 5, inner glue layer 6 and in mould layer 7.Owing to have steel layer 4, thus withstand voltage height, so again since in inside and outside steel layer 4, having zinc layer or aluminium lamination 5 with outside zinc layer or aluminium lamination 4 under weak oxide atmosphere, have fabulous antisepsis.
The described zinc-plated or steel band 4 of aluminizing can be made by the zinc-plated or aludip of buying on the market, also can be factory's processing and fabricating voluntarily.
Described outer plastic layer 1 and in to mould layer 6 be polyethylene or crosslinked polyethylene.
Described outer glue-line 2 and inner glue layer 7 are heat-fusing glue layers.
Introduce the production method of steel-plastic composite pressure pipe of the present invention below.
1, in the 1st step, makes the zinc-plated or steel pipe of aluminizing of moulding layer in the band
1) with the zinc-plated or steel plate of aluminizing by the diameter of the steel-plastic composite pressure pipe of required making, be processed into the zinc-plated of required width or the steel band of aluminizing;
2) remove zinc or the aluminium zinc-plated or two edges that the steel band of aluminizing need weld, so that weld seam has comprehensive mechanical performance preferably;
3) under the extruding of forming forming rolls, zinc-plated or the steel band of aluminizing are rolled into tubulose more, simultaneously, insert synchronously extrude by extruder, scribble hot melt adhesive in mould layer and manage;
4) welding, the zinc-plated or steel pipe of aluminizing of moulding layer pipe, forming in will having welds together, and makes it into and moulds the zinc-plated of layer pipe or the steel pipe of aluminizing in the as a whole band.During welding, certain limit installs a device that makes in the gluing pipe and steel pipe isolate certain distance additional before soldering point, to prevent that steel pipe makes pipe in the gluing in welding process glue-line from by the scaling loss charing, making weld seam carburetting, causes the intensity of weld seam to increase toughness and reduces.
2, in the 2nd step, form the seven-layer structure steel-plastic composite pressure pipe
1) will by the first step produce have in mould layer pipe steel pipe by heating generator, mould layer pipe and zinc-plated or the hot melt adhesive secondary fusion between steel pipe of aluminizing in making, mould the bonding of layer pipe and zinc-plated or the steel pipe of aluminizing in the realization;
2) outside zinc-plated or the steel pipe of aluminizing, apply bonding outer plastic layer of one deck and the hot melt adhesive zinc-plated or steel pipe of aluminizing;
3) outside the above-mentioned pipe that coats hot melt adhesive, apply the corrosion-resistant outer plastic layer.
Through the pipe after the above-mentioned processing, promptly form the steel-plastic composite pressure pipe of seven-layer structure after the cooling.
If the zinc-plated or aludip that does not use market directly to purchase to sell, its processing method zinc-plated or aludip is:
1) blanking becomes the blank steel band, the comparable big 4mm-6mm of size that needs of its size with steel plate with the required length blanking of diameter greater than the steel pipe of required making approximately;
2) rolling leveling steel band;
3) to the steel band oil removing, so that steel band combines zinc or aluminium and steel band when spending zinc or aluminizing better;
4) carry out zinc-plated to leveling except the steel band of oil or aluminize.
Referring to Fig. 2, making of using in welding moulded the device that layer pipe and steel pipe isolate certain distance in the gluing be to comprise a flat steel pipe 8, and this pipe is connected with induced draught fan 10 by a pipeline 9.During welding, before steel pipe does not heal up fully, before soldering point 11, flat steel pipe 8 is stretched between steel pipe and the internal plastic tube, make that to mould layer pipe in steel pipe and the gluing spaced apart, be unlikely make pipe in the gluing glue-line by the scaling loss charing, make weld seam carburetting, cause the intensity of weld seam to increase toughness and reduce.Induced draught fan is extracted near produce because of welding the welding region zine oxide and other dust and smog out by flat steel pipe 8, thereby avoids moulding in dust and the smog influence the bonding of layer and steel pipe.
Claims (6)
1, steel is moulded the compounding pressure steel pipe, comprise outer plastic layer (1), outer glue-line (2), inner glue layer (6) and in mould layer (7), it is characterized in that having the two sides between the glue-line (2) and inner glue layer (6) outside all is coated with the zinc-plated of zinc or aluminium or the steel band of aluminizing (4).
2, steel according to claim 1 and 2 is moulded the compounding pressure steel pipe, it is characterized in that described outer plastic layer (1) and in mould the layer (7) be polyethylene or crosslinked polyethylene.
3, steel according to claim 1 and 2 is moulded the compounding pressure steel pipe, and described outer glue-line of its feature (2) and inner glue layer (6) are heat-fusing glue layers.
4, make the method that steel is moulded the compounding pressure steel pipe, it is characterized in that comprising:
1) in the 1st step, makes in the band and mould the zinc-plated of layer pipe or the steel pipe of aluminizing
(1) with the zinc-plated or steel plate of aluminizing diameter, the steel band that is worked into the zinc-plated of required width or aluminizes by the steel-plastic composite pressure pipe of required making;
(2) welding is removed the zinc or the aluminium of the two edges that steel band need weld, so that weld seam has comprehensive mechanical performance preferably;
(3) under the extruding of forming forming rolls, zinc-plated or aludip are rolled into tubulose more, simultaneously, insert synchronously by extruder extrude scribble hot melt adhesive in mould layer and manage;
(4) the zinc-plated or steel pipe of aluminizing of moulding layer pipe, forming in will having welds together, make it into and mould the zinc-plated of layer pipe or the steel pipe of aluminizing in the as a whole band, during welding, certain limit installs one additional and makes the device of managing in the gluing with steel pipe isolation certain distance before soldering point;
2) in the 2nd step, form the seven-layer structure steel-plastic composite pressure pipe
(1) will by the first step produce have in mould layer pipe steel pipe by heating generator, mould layer pipe and zinc-plated or the hot melt adhesive secondary fusion between steel pipe of aluminizing in making, mould the bonding of layer pipe and zinc-plated or the steel pipe of aluminizing in the realization;
(2) outside zinc-plated or the steel pipe of aluminizing, apply bonding outer plastic layer of one deck and the hot melt adhesive zinc-plated or steel pipe of aluminizing;
(3) outside the above-mentioned pipe that coats hot melt adhesive, apply the corrosion-resistant outer plastic layer.
5, method according to claim 4 is characterized in that described zinc-plated or aludip is to be made by following method:
1) blanking becomes the blank steel band with steel plate with the required length blanking of diameter greater than the steel pipe of required making approximately;
2) rolling leveling steel band;
3) to the steel band oil removing, so that steel band combines zinc or aluminium and steel band zinc-plated or when aluminizing better;
4) carry out zinc-plated to leveling except the steel band of oil or aluminize.
6, according to claim 4 or 5 described methods, it is characterized in that the device that uses comprises a flat steel pipe (8) when welding, this pipe is connected with induced draught fan (10) by a pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011362170A CN1189686C (en) | 2001-10-10 | 2001-10-10 | Steel-plastics composite pressure pipe and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011362170A CN1189686C (en) | 2001-10-10 | 2001-10-10 | Steel-plastics composite pressure pipe and its production method |
Publications (2)
| Publication Number | Publication Date |
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| CN1412465A true CN1412465A (en) | 2003-04-23 |
| CN1189686C CN1189686C (en) | 2005-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011362170A Expired - Lifetime CN1189686C (en) | 2001-10-10 | 2001-10-10 | Steel-plastics composite pressure pipe and its production method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426612B (en) * | 2006-04-19 | 2012-03-28 | 安赛乐米塔尔法国公司 | Method of producing a welded part having very high mechanical properties from a rolled and coated sheet |
| CN102748542A (en) * | 2012-07-13 | 2012-10-24 | 新兴铸管股份有限公司 | Steel-plastic composite protective sleeve |
| CN103759080A (en) * | 2014-01-24 | 2014-04-30 | 新兴铸管股份有限公司 | Composite steel-plastic pressure tube and manufacturing method thereof |
| CN104785912A (en) * | 2015-04-13 | 2015-07-22 | 新兴铸管股份有限公司 | Heat insulation protection device and using method thereof |
| CN106218134A (en) * | 2016-08-30 | 2016-12-14 | 浙江中财管道衍生产品有限公司 | A kind of steel strip reinforced pvc pipe and production technology thereof |
| CN106334875A (en) * | 2016-10-27 | 2017-01-18 | 宝山钢铁股份有限公司 | Steel welding component with aluminum or aluminum alloy coating and manufacturing method thereof |
| CN107350743A (en) * | 2017-07-20 | 2017-11-17 | 江苏省常熟环通实业有限公司 | A kind of anticorrosion gymnasium welded tube processing technology |
| CN110701393A (en) * | 2019-10-09 | 2020-01-17 | 江苏润广环保科技有限公司 | Multi-level portable structure pipeline under pressure |
| CN113953720A (en) * | 2021-10-29 | 2022-01-21 | 武汉金牛经济发展有限公司 | Steel-plastic composite pipe steel belt welding centering guiding isolation device |
-
2001
- 2001-10-10 CN CNB011362170A patent/CN1189686C/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10480554B2 (en) | 2006-04-19 | 2019-11-19 | Arcelormittal France | Steel part |
| CN101426612B (en) * | 2006-04-19 | 2012-03-28 | 安赛乐米塔尔法国公司 | Method of producing a welded part having very high mechanical properties from a rolled and coated sheet |
| US11154950B2 (en) | 2006-04-19 | 2021-10-26 | Arcelormittal France | Method for creating a welded steel part with uniform microstructure |
| US10626903B2 (en) | 2006-04-19 | 2020-04-21 | Arceloemittal France | Steel part |
| US10626902B2 (en) | 2006-04-19 | 2020-04-21 | Arcelormittal France | Steel part |
| US10352342B2 (en) | 2006-04-19 | 2019-07-16 | Arcelormittl France | Steel part |
| US10473130B2 (en) | 2006-04-19 | 2019-11-12 | Arcelormittal France | Steel part |
| CN102748542A (en) * | 2012-07-13 | 2012-10-24 | 新兴铸管股份有限公司 | Steel-plastic composite protective sleeve |
| CN103759080A (en) * | 2014-01-24 | 2014-04-30 | 新兴铸管股份有限公司 | Composite steel-plastic pressure tube and manufacturing method thereof |
| CN104785912A (en) * | 2015-04-13 | 2015-07-22 | 新兴铸管股份有限公司 | Heat insulation protection device and using method thereof |
| CN106218134A (en) * | 2016-08-30 | 2016-12-14 | 浙江中财管道衍生产品有限公司 | A kind of steel strip reinforced pvc pipe and production technology thereof |
| CN106334875A (en) * | 2016-10-27 | 2017-01-18 | 宝山钢铁股份有限公司 | Steel welding component with aluminum or aluminum alloy coating and manufacturing method thereof |
| CN107350743A (en) * | 2017-07-20 | 2017-11-17 | 江苏省常熟环通实业有限公司 | A kind of anticorrosion gymnasium welded tube processing technology |
| CN110701393A (en) * | 2019-10-09 | 2020-01-17 | 江苏润广环保科技有限公司 | Multi-level portable structure pipeline under pressure |
| CN113953720A (en) * | 2021-10-29 | 2022-01-21 | 武汉金牛经济发展有限公司 | Steel-plastic composite pipe steel belt welding centering guiding isolation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1189686C (en) | 2005-02-16 |
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