CN1336504A - Composite seam-less steel pipe with thermocompressed plastic and its manufacture - Google Patents
Composite seam-less steel pipe with thermocompressed plastic and its manufacture Download PDFInfo
- Publication number
- CN1336504A CN1336504A CN 00109952 CN00109952A CN1336504A CN 1336504 A CN1336504 A CN 1336504A CN 00109952 CN00109952 CN 00109952 CN 00109952 A CN00109952 A CN 00109952A CN 1336504 A CN1336504 A CN 1336504A
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- China
- Prior art keywords
- pipe
- steel pipe
- plastic
- plastic tube
- thermocompressed
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 239000004033 plastic Substances 0.000 title claims abstract description 54
- 229920003023 plastic Polymers 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 8
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims abstract 2
- 239000004831 Hot glue Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009760 electrical discharge machining Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 239000005435 mesosphere Substances 0.000 claims 1
- 238000013329 compounding Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920006257 Heat-shrinkable film Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invented seamless steel pipe with thin wall is composed of outer layer, intermediate layer and inner layer. The outer layer is thin wall seamless steel pipe. The intermediate layer is solidified heat-melting glue. The inner layer is food class polypropylene. The invented pipe is produced out through processes of steel pipe covering plastic pipe, pressurizing and compounding. The invented pipe provides the merits of good appearance, lightweigt, resisting high press, easy to pull on. It has no shortcomings of commercial steel-plastic pipe such as too thick wall of pipe, interference binding force vanishing, not suitable to lay such pipe underground and not suitable for large caliber one.
Description
The present invention relates to a kind of building pipe, novel tube and manufacturing process thereof that a kind of civil building water supply network of definitely saying so is badly in need of.
At present, it generally all is Coating Steel Pipe and common seamless steel pipe inner lining plastic tube that steel on the market is moulded pipe, and this tube material and tube wall is thick, and its manufacturing process is cold group, pultrusion, roll extrusion etc., essence is under mechanical force, and outer diameter of steel pipes dwindles the generation steel and moulds interference fit and reach composite goal.But because plastic tube can be elongated in the pultrusion process, the creep of plastics and cold flow characteristic can grow with time or the effect of temperature variation factor, make steel mould the interference combination force and fade away, thereby steel being moulded produce between the pipe slides, in addition loosening.Simultaneously, this class steel-plastic composite pipe appearance poor, Heavy Weight, environmental-protecting performance are unreliable, and product cost is higher.And plastic tube and aluminium-plastic composite pipe all exist to expand with heat and contract with cold and change greatly, withstand voltage general, and outer layer plastic is easily aging, and fireproof performance is poor, and buried character can be poor, and inside nominal diameter is less, generally 50 millimeters with Inner, do not reach the requirement of outdoor heavy caliber pipe network fully.Along with country eliminates Coating Steel Pipe, quicken to promote novel water inlet, novel tubes such as fuel tube, the civil building water supply network is badly in need of various novel tubes.
The objective of the invention is to: provide a kind of outward appearance good, in light weight, withstand voltage height, fire prevention, the dark rational faculty through walls is good, and the environmental-protecting performance spy is excellent, composite seam-less steel pipe with thermocompressed plastic that fabricating cost is low and manufacturing process thereof.
The objective of the invention is to realize by the enforcement following technical proposals: composite seam-less steel pipe with thermocompressed plastic (hereinafter to be referred as composite pipe) is a matrix with the cold rolled precision thin-wall seamless steel pipe, the Inner cover is to be coated with the food-grade polypropylene pipe of special-purpose thermosol, and making steel mould compound through high temperature, high-pressure process is that an integral body forms.Its concrete manufacturing process is as follows:
(1) antenatal ingredient inspection and pretreatment:
Seamless steel pipe is carried out dipping in regular turn, inwall rust cleaning, appearance polishing, each operation of pipe end electric spark-erosion perforation; Polypropylene tube is tested in regular turn heat treatment, appearance gluing, scale blanking;
(2) the main manufacturing process of composite pipe: carry out steel in regular turn and mould sleeve pipe, pressurization, compound each operation;
(3) product afterbody operation: composite pipe surface treatment, scale cutting, spray printing mark, multiple film, Checking of finished products, packing warehouse-in.
Below manufacturing process is described as follows:
(1) seamless steel pipe technique for pretreating:
Dipping-check mainly whether the steel pipe physical dimension meets standard and manufacture process requirement;
Appearance polishing-increase steel pipe degree of finish is to improve back operation surface treatment effect;
Electric spark-erosion perforation-spile at the steel pipe end, aperture 0.2-0.5mm, at least 4 at every end, purposes exhaust.
The plastic tube technique for pretreating:
Check---check whether external diameter and wall thickness meet manufacture process requirement;
Heat treatment---in boiling water, boiled 15 minutes, and plastic tube was done typing handle;
Gluing---adopt engine sizing, thickness 0.05-0.1 millimeter;
The scale blanking---identical with steel pipe length;
(2) the main manufacturing process of composite pipe:
Steel is moulded sleeve pipe---and the plastic tube of gluing penetrates in the pretreated steel pipe, and the poling gap is generally 1.2 millimeter, and maximum can arrive 3 millimeters, and then adorns " pull bar self-energized seal device " in plastic tube;
Pressurization---make pressurized gas enter pull bar self-energized seal device from safety check, and the aperture from pull bar enters in the plastic tube, under gas pressure, flexible sealing ring is from motive sealing, and maintenance constant voltage, owing to the effect of interior pressure, plastic tube begins to expand simultaneously, and the size of superheated steam pressure is calculated according to size and self intersity limitation of plastic tube;
Compound---will add the seamless steel pipe that presses, under pressure constant state, outer surface of steel tube is evenly heated by certain speed, and heating intensity is melted to best adhesive effect with hot melt adhesive and is advisable, at this moment, because the effect that Inner presses, plastic tube will closely be fitted with steel pipe Inner wall and by bonding, cooling back hot melt adhesive is solidified, and steel-plastic composite pipe is promptly finished, after the release, remove " pull bar self-energized seal device " and promptly enter down operation;
(3) afterbody operation: surface treatment---sticking plastic composite outer surface is carried out chromium plating handle, make its outer surface " stainless steel ", strengthen Corrosion Protection;
Multiple film---answer one deck means of heat-shrinkable film again to prevent the damage of product in transportation and installation process at sticking plastic composite steel tube outer surface.
In sum, composite seam-less steel pipe with thermocompressed plastic of the present invention, being combined into whole cold rolling thin-wall seamless steel pipe and food-grade polypropylene pipe by suit constitutes, it is characterized in that: the skin of composite pipe is cold rolling thin-wall seamless steel pipe, the hot melt adhesive of thin intermediate for solidifying, internal layer is compound firm food-grade polypropylene pipe; And make the technological method of described composite seam-less steel pipe with thermocompressed plastic, by dipping to seamless steel pipe, the appearance polishing, the electric spark-erosion perforation technique for pretreating reaches the check to plastic tube, heat treatment, gluing, the technique for pretreating of scale blanking, main manufacturing process of composite pipe and afterbody treatment process are formed, it is characterized in that: main manufacturing process is that steel is moulded sleeve pipe, pressurization, compoundly be about to plastic tube that outer surface scribbled hot melt adhesive and penetrate two ends in the seamless steel pipe of electric spark-erosion perforation, in plastic tube, pack into again in " pull bar self-energized seal device ", then by its safety check to charging into pressurized gas in the plastic tube, make pre-expansion of plastic tube be close to steel pipe Inner wall, and get rid of air in the crack therebetween, under pressure constant state with certain speed to the even heating and cooling of outer surface of steel tube, make the hot melt adhesive fusing steel be moulded bonding, cooling back hot melt adhesive is solidified, and promptly becomes the thermocompressed plastic seamless steel pipe.
The invention has the advantages that: the tubing outward appearance is good in light weight, withstand voltage height, heat resistance is reliable and stable, and buried character through walls can be good, fire prevention, long service life, cost is low, reliable in quality, for environmental-protecting performance good give aquatic products, the advantage of its manufacturing process is: technological process is short, device structure is uncomplicated, and less investment is operated more convenient.
The present invention has following accompanying drawing:
Fig. 1 is flow figure of the present invention
Fig. 2 is pull bar self-energized seal device and composite pipe pressurization schematic diagram
Mark among the figure: 1 is safety check, and 2 is rod assembly, and 3 is seal ring, and 4 is plastic tube, and 5 is seamless steel pipe, and 6 is plug, and 7 is aperture on the pull bar, and 8 is the plastic tube inner chamber.
The present invention is further described as follows below in conjunction with accompanying drawing:
The plastic tube 4 of gluing is penetrated in the pretreated steel pipe 5, the selection of shell clearance, should be according to plastic tube, the size of steel pipe, ellipse garden degree, concrete conditions such as bondline thickness and deciding, the gap is suitable little, but must guarantee easily and fast plastic tube to be penetrated in the steel pipe, then with in " the pull bar self-energized seal device " plastic tube 4 of packing into, pressurized gas enter pull rod seal device 2 from safety check 1 during pressurization, and the aperture 7 from its pull bar enters plastic tube inner chamber 8, flexible sealing ring 3 is from motive sealing and keep constant voltage under gas pressure, plastic tube begins to expand under interior pressure effect, the size of superheated steam pressure, size and self intersity limitation according to plastic tube calculate setting, will add the seamless steel pipe that presses and remain on pressure constant state, and outer surface of steel tube is evenly heated by certain speed, heating intensity should reach just and can make hot melt adhesive be melted to best adhesive effect, and plastic tube is not overheated impaired.Heating intensity control should be according to the wall thickness that is heated steel pipe, and the softening properties of hot melt adhesive self determines, and mends with the heating and cooling speed regulation, and heat output is regulated.Because interior pressure effect, plastic tube are closely fitted with the steel pipe inwall and bonded together, behind the hot melt adhesive cooling curing, steel-plastic composite pipe promptly forms.What be also pointed out that in manufacturing process is electric spark-erosion perforation, purpose in the steel tube end part punching is will get rid of steel to mould the air of managing in the poling gap, punching is little, distribution should be even, otherwise exhaust is not thorough, and exhaust aperture such as bigger than normal can be caused in the recombination process because after plastic tube is heated, the body of calming the anger in the reduction in strength quilt punctures, and causes compound failure.
As the embodiment of the invention, can make the composite seam-less steel pipe with thermocompressed plastic that external diameter is 15-300mm, its serviceability temperature is-10～95 ℃, working pressure can reach 2.5MPa.
Claims (2)
1, a kind of composite seam-less steel pipe with thermocompressed plastic, being combined into whole cold rolling thin-wall seamless steel pipe and food-grade polypropylene pipe by suit constitutes, it is characterized in that: the skin of composite pipe is cold rolling thin-wall seamless steel pipe, the heat-fusing glue layer of mesosphere for solidifying, internal layer is compound firm food-grade polypropylene pipe.
2, a kind of technological method of making the described composite seam-less steel pipe with thermocompressed plastic of claim 1, by dipping to seamless steel pipe, outer inner feelings Throwing light, the electric spark-erosion perforation technique for pretreating reaches the check to plastic tube, heat treatment, gluing, the technique for pretreating of scale blanking, main manufacturing process of composite pipe and afterbody treatment process are formed, it is characterized in that: main manufacturing process is that steel is moulded sleeve pipe, pressurization, compound, be about to plastic tube that outer surface scribbled hot melt adhesive and penetrate two ends in the seamless steel pipe of electric spark-erosion perforation, in plastic tube, pack into again in " pull bar self-energized seal device ", then by its safety check to charging into pressurized gas in the plastic tube, make pre-expansion of plastic tube be close to the webmaster inwall, and get rid of air in the crack therebetween, under pressure constant state with certain speed to the even heating and cooling of outer surface of steel tube, make the hot melt adhesive fusing steel be moulded bonding, cooling back hot melt adhesive is solidified, and promptly becomes the thermocompressed plastic seamless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109952 CN1336504A (en) | 2000-07-27 | 2000-07-27 | Composite seam-less steel pipe with thermocompressed plastic and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00109952 CN1336504A (en) | 2000-07-27 | 2000-07-27 | Composite seam-less steel pipe with thermocompressed plastic and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1336504A true CN1336504A (en) | 2002-02-20 |
Family
ID=4579991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00109952 Pending CN1336504A (en) | 2000-07-27 | 2000-07-27 | Composite seam-less steel pipe with thermocompressed plastic and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1336504A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863124A (en) * | 2010-06-02 | 2010-10-20 | 芶珍 | Method and equipment for welding plastic tube network |
| CN102116401A (en) * | 2010-01-04 | 2011-07-06 | 张传勇 | Rubber plate capable of improving bonding force with steel pipe |
| CN101468517B (en) * | 2008-04-01 | 2011-11-30 | 新兴铸管股份有限公司 | Technological process for coating plastic film in metal tube and equipment for coating film on bell |
| CN102424969A (en) * | 2011-11-30 | 2012-04-25 | 中联重科股份有限公司 | Equipment and method for manufacturing inner liner of thin-wall pipe fitting |
| CN106594406A (en) * | 2017-02-16 | 2017-04-26 | 湖南振辉管业有限公司 | Lining plastic pipe cast iron pipe and manufacturing method thereof |
| CN109654310A (en) * | 2019-01-24 | 2019-04-19 | 中国水利水电第六工程局有限公司 | A kind of connection method and its jointing of High Pressure Drain coiled hose and steel pipe |
| CN110549291A (en) * | 2019-08-01 | 2019-12-10 | 中国第一重型机械集团大连加氢反应器制造有限公司 | pneumatic tensioning type seeker |
-
2000
- 2000-07-27 CN CN 00109952 patent/CN1336504A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468517B (en) * | 2008-04-01 | 2011-11-30 | 新兴铸管股份有限公司 | Technological process for coating plastic film in metal tube and equipment for coating film on bell |
| CN102116401A (en) * | 2010-01-04 | 2011-07-06 | 张传勇 | Rubber plate capable of improving bonding force with steel pipe |
| CN101863124A (en) * | 2010-06-02 | 2010-10-20 | 芶珍 | Method and equipment for welding plastic tube network |
| CN101863124B (en) * | 2010-06-02 | 2012-11-14 | 芶珍 | Method and equipment for welding plastic tube network |
| CN102424969A (en) * | 2011-11-30 | 2012-04-25 | 中联重科股份有限公司 | Equipment and method for manufacturing inner liner of thin-wall pipe fitting |
| CN102424969B (en) * | 2011-11-30 | 2013-06-26 | 中联重科股份有限公司 | Equipment and method for manufacturing inner liner of thin-wall pipe fitting |
| CN106594406A (en) * | 2017-02-16 | 2017-04-26 | 湖南振辉管业有限公司 | Lining plastic pipe cast iron pipe and manufacturing method thereof |
| CN109654310A (en) * | 2019-01-24 | 2019-04-19 | 中国水利水电第六工程局有限公司 | A kind of connection method and its jointing of High Pressure Drain coiled hose and steel pipe |
| CN110549291A (en) * | 2019-08-01 | 2019-12-10 | 中国第一重型机械集团大连加氢反应器制造有限公司 | pneumatic tensioning type seeker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: YUE CHENGPING Free format text: FORMER OWNER: TONGGAO COMMUNICATION CO., LTD., CHENGDU Effective date: 20020719 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20020719 Applicant after: Yue Chengping Applicant before: Tonggao Communication Co., Ltd., Chengdu |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |