CN104625592A - Production method of lining plastic steel pipe - Google Patents
Production method of lining plastic steel pipe Download PDFInfo
- Publication number
- CN104625592A CN104625592A CN201310561865.0A CN201310561865A CN104625592A CN 104625592 A CN104625592 A CN 104625592A CN 201310561865 A CN201310561865 A CN 201310561865A CN 104625592 A CN104625592 A CN 104625592A
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- CN
- China
- Prior art keywords
- steel pipe
- plastic
- pipe
- heated
- plastics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
Abstract
The invention discloses a production method of a lining plastic steel pipe. A steel pipe is subjected to acid pickling, surface scale and impurities are removed, a zinc groove is heated to 450-550 DEG C, and then the steel pipe is placed for hot galvanizing. Vinyon particles are heated to 200 DEG C in a plastic extruder, a plastic pipe is formed by screw pressurizing extruding, the outer diameter of the plastic pipe is fixed by vacuum sizing, and cooling is carried out. Hot melt adhesive particles are heated to 200 DEG C in another plastic extruder, and the particles are coated on the outer surface of the plastic pipe by screw pressurizing extruding. The plastic pipe is cut off, and the length is 5-8 mm longer than that of the steel pipe. The plastic pipe penetrates into the galvanized steel pipe, and the two ends are provided with clamps for sealing. The pipes are placed in a heating furnace with hot air circulating for heating, plastics are softened, compressed air enters the plastic pipe, the plastic pipe expands, under the pressure of the compressed air, the plastics and the steel pipe bond together through the hot melt adhesive, the method is simple, and the bonding intensity of the plastics and the steel pipe is high.
Description
Technical field
The invention belongs to technique of pipe field, be specifically related to a kind of production method of plastic-lined steel pipe.
Background technology
The advantages such as the resistance coefficient that the plastic lining composite steel pipe of interior wall liner vinyl tube, outer wall coating has any surface finish, non-scaling, non-corrosive, internal diameter can not reduce, carry fluid is little, but prior art produces line plastic-steel tube, tolerance is comparatively large, and the impact of easily being expanded with heat and contract with cold produces layering.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of production method of plastic-lined steel pipe, method is simple, and the bonding strength of plastics and steel pipe is high.
The production method of plastic-lined steel pipe provided by the invention, comprises the following steps: acid cleaning of steel tube is removed surface scale and impurity by (1), and zinc groove is heated to 450-500 DEG C, puts into steel pipe afterwards and carries out galvanizing; (2) vinyon particle is heated to 200 DEG C in plastic extruder, is extruded into plastic tube through screw pressurizing, cool through vacuum sizing fixed plastics pipe external diameter; (3) in another plastic extruder, PUR particle is heated to 200 DEG C, extrudes coated at plastic tube outer surface through screw pressurizing; (4) cut off by plastic tube, length is the long 5-8mm of steel pipe comparatively; (5) by plastic tube through in coating steel pipe, fixture for sealing is installed at two ends, putting into the heating furnace heating with hot air circulate makes plastics soften, and plastic tube passes into compressed air makes plastic tube expand, and relies on PUR that plastics and steel pipe are bonded together under compressed-air actuated pressure.
The production method of plastic-lined steel pipe provided by the invention, its beneficial effect is, method is simple, and plastic bonding is at the inwall of steel pipe, and bonding strength is high, effectively avoids causing steel to mould layering because expanding with heat and contract with cold.
Detailed description of the invention
Below in conjunction with an embodiment, the production method of plastic-lined steel pipe provided by the invention is described in detail.
Embodiment
The production method of the plastic-lined steel pipe of the present embodiment, comprises the following steps: acid cleaning of steel tube is removed surface scale and impurity by (1), and zinc groove is heated to 450 DEG C, puts into steel pipe afterwards and carries out galvanizing; (2) vinyon particle is heated to 200 DEG C in plastic extruder, is extruded into plastic tube through screw pressurizing, cool through vacuum sizing fixed plastics pipe external diameter; (3) in another plastic extruder, PUR particle is heated to 200 DEG C, extrudes coated at plastic tube outer surface through screw pressurizing; (4) cut off by plastic tube, length is the long 6mm of steel pipe comparatively; (5) by plastic tube through in coating steel pipe, fixture for sealing is installed at two ends, putting into the heating furnace heating with hot air circulate makes plastics soften, and plastic tube passes into compressed air makes plastic tube expand, and relies on PUR that plastics and steel pipe are bonded together under compressed-air actuated pressure.
Claims (1)
1. a production method for plastic-lined steel pipe, is characterized in that: comprise the following steps: acid cleaning of steel tube is removed surface scale and impurity by (1), and zinc groove is heated to 450-500 DEG C, puts into steel pipe afterwards and carries out galvanizing; (2) vinyon particle is heated to 200 DEG C in plastic extruder, is extruded into plastic tube through screw pressurizing, cool through vacuum sizing fixed plastics pipe external diameter; (3) in another plastic extruder, PUR particle is heated to 200 DEG C, extrudes coated at plastic tube outer surface through screw pressurizing; (4) cut off by plastic tube, length is the long 5-8mm of steel pipe comparatively; (5) by plastic tube through in coating steel pipe, fixture for sealing is installed at two ends, putting into the heating furnace heating with hot air circulate makes plastics soften, and plastic tube passes into compressed air makes plastic tube expand, and relies on PUR that plastics and steel pipe are bonded together under compressed-air actuated pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561865.0A CN104625592A (en) | 2013-11-13 | 2013-11-13 | Production method of lining plastic steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561865.0A CN104625592A (en) | 2013-11-13 | 2013-11-13 | Production method of lining plastic steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104625592A true CN104625592A (en) | 2015-05-20 |
Family
ID=53205070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561865.0A Pending CN104625592A (en) | 2013-11-13 | 2013-11-13 | Production method of lining plastic steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104625592A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583954A (en) * | 2016-11-28 | 2017-04-26 | 王有洪 | Preparation method of plastic lining steel tube in welded connection |
| CN107165584A (en) * | 2017-06-29 | 2017-09-15 | 张志民 | The oil of interior outer cladding hot melting plastic layer, well injection pipe post and preparation method thereof |
| CN109296840A (en) * | 2018-11-22 | 2019-02-01 | 江苏洁润管业有限公司 | A kind of PE steel-plastics composite pipe |
| CN110756615A (en) * | 2019-10-09 | 2020-02-07 | 南京晨光复合管工程有限公司 | Method for forming drawing type lining pipe |
| CN112025221A (en) * | 2020-08-29 | 2020-12-04 | 维都利阀门有限公司 | Process for completely lining valve body with rare metal |
| CN113579654A (en) * | 2021-08-03 | 2021-11-02 | 国仪石油技术(无锡)有限公司 | Novel underground instrument antenna winding method |
-
2013
- 2013-11-13 CN CN201310561865.0A patent/CN104625592A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583954A (en) * | 2016-11-28 | 2017-04-26 | 王有洪 | Preparation method of plastic lining steel tube in welded connection |
| CN107165584A (en) * | 2017-06-29 | 2017-09-15 | 张志民 | The oil of interior outer cladding hot melting plastic layer, well injection pipe post and preparation method thereof |
| CN109296840A (en) * | 2018-11-22 | 2019-02-01 | 江苏洁润管业有限公司 | A kind of PE steel-plastics composite pipe |
| CN110756615A (en) * | 2019-10-09 | 2020-02-07 | 南京晨光复合管工程有限公司 | Method for forming drawing type lining pipe |
| CN112025221A (en) * | 2020-08-29 | 2020-12-04 | 维都利阀门有限公司 | Process for completely lining valve body with rare metal |
| CN113579654A (en) * | 2021-08-03 | 2021-11-02 | 国仪石油技术(无锡)有限公司 | Novel underground instrument antenna winding method |
| CN113579654B (en) * | 2021-08-03 | 2022-07-01 | 国仪石油技术(无锡)有限公司 | Novel underground instrument antenna winding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |