CN102913693B - Novel steel pipe and manufacturing method thereof - Google Patents
Novel steel pipe and manufacturing method thereof Download PDFInfo
- Publication number
- CN102913693B CN102913693B CN201210263449.8A CN201210263449A CN102913693B CN 102913693 B CN102913693 B CN 102913693B CN 201210263449 A CN201210263449 A CN 201210263449A CN 102913693 B CN102913693 B CN 102913693B
- Authority
- CN
- China
- Prior art keywords
- novel steel
- steel tube
- making method
- steel pipe
- polyester
- 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.)
- Active
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a novel steel pipe which comprises a three-layer structure, wherein the three-layer structure is respectively an outer coating layer 1, a middle steel pipe basal body 2 and an inner wall zinc coating layer 3. The novel steel pipe provided by the application has the advantages that the manufacturing process is simple, the production efficiency is high, the fire retardancy and weather resistance of the outer coating layer are good, and the adhesive performance and antiseptic property are superior.
Description
Technical field
Invention relates to steel-plastic composite pipe production field, particularly relates to a kind of novel steel tube and preparation method thereof.
Background technique
At present, the combustion gas steel of China moulds the most inner and outer surface plastic-coated thermoplasticity weather resistant polyethylene anticorrosive coating adopted at phosphatization steel pipe of pipe, inner wall smooth, and insulating properties is good, coarse little with friction factor, and not easily incrustation blocking, has excellent anti-foreign matter adhesive quality.The advantages such as the mechanical property of existing steel pipe and toughness, good rigidly, percent thermal shrinkage are low, have again the health of plastic tube, corrosion-resistant, slow fouling, not easily grow the feature of microorganism.In the use installation process of reality, usual employing is vertical enters huge numbers of families by bottom to the mounting type of high level, particularly high building, because its floor is higher, if use screw thread, flange, groove to connect when mounted, consider other factors (as blow, Exposure to Sunlight, drench with rain, earthquake etc.) impact on pipeline use safety, tie point very easily produces phenomenon that is loosening, that come off, causes Leakage Gas.In view of the foregoing, unit in charge of construction, when carrying out Pipe installing, uses welding manner instead.Pipe moulded by existing combustion gas steel has polyethylene coating because of inner and outer surface, easily burns during welding, and undercoating soldering point cannot be repaired at all.Outdoor welding cannot be applied to, be confined to indoor.In this case, meet the need of market in the urgent need to developing a kind of novel gas pipeline.
Summary of the invention
In order to overcome the deficiencies in the prior art, first technical purpose of invention is to provide the novel steel tube of the practicality of a kind of structure, convenient welding.
In order to overcome the deficiencies in the prior art, second technical purpose of invention is to provide the novel steel tube making method of the practicality of a kind of structure, convenient welding.
For realizing above-mentioned first technical purpose, the technological scheme that invention adopts is as follows:
A kind of novel steel tube, comprises steel pipe matrix, described outer wall of steel pipe coating polyester/epoxy or polyethylene powders.
Preferably, described steel pipe inner wall is zinc-plated.
For realizing above-mentioned second technical purpose, the technological scheme that invention adopts is as follows:
A making method for novel steel tube, comprises the following steps: (1) galvanized pipe; (2) outer wall ball blast; (3) phosphorating treatment: (4) preheating; (5) outer plastic-coated; (6) solidify.
Preferably, described phosphorating treatment is specifically followed successively by: alkaline degreasing, washing, spray washing, table tune, phosphatization, washing, spray washing.
Preferably, in described alkaline degreasing step, degreasing tank fluting ratio is: degreasing powder 5 ℅; Free alkalinity 10-18 point; Operating temperature 50 DEG C-60 DEG C; Processing time 8-10min.
Preferably, during table pacing is rapid, table tunes to open groove ratio: 2 ‰, pH value 8-9.
Preferably, in phosphating step, Phosphating Slot fluting ratio: bonderite 10 ℅, additive 2 ‰; Prepare the total acidity total acidity 20-20 point in tank liquor, free acidity 1.5-3.5 point, operating temperature 40 DEG C-50 DEG C; Processing time: 6-10min.
Preferably, in step (4), the preheating oven temperature of polyethylene powders controls at 280 ± 5 DEG C, and the preheating temperature of polyester/epoxy coating is then 160 DEG C ± 10 DEG C, and the time is 15min.
Preferably, step (5) China and foreign countries are coated with polyethylene and adopt fluidization dip coating; Outer painting polyester/epoxy powder adopts automatic electrostatic reciprocating engine.
Preferably, in step (6), the solidifying temperature of polyethylene powders controls at 100 DEG C ± 10 DEG C, and the time is 10min, and the solidifying temperature of polyester/epoxy powder controls at 180 DEG C-200 DEG C, and the time is 10-15 minute.
Compared with prior art, the advantage of invention is:
Technique is simple, and manufacturing efficiency is high, external coating flame retarding, good weatherability, and adhesion, antiseptic property are superior.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, invention is described in further detail.Should be appreciated that specific embodiment described herein only for explaining model utility, and be not used in restriction model utility.
As shown in Figure 1, the application provides a kind of novel steel tube, comprises three-decker, is respectively external coating 1, middle steel pipe matrix 2, and inwall zinc coat 3.
Wherein the production concrete technology flow process of tubing is as follows:
1. appearance ball blast: utilize outer wall of steel pipe shot-blast apparatus to be removed by outer surface zinc coat clean, surface cleaning grade reaches B-Sa2
1/
2sa3.
2. phosphorating treatment: technological process is alkaline degreasing → washing → spray washing → table tune → phosphatization → washing → spray washing.Wherein 1. .(mass percent), degreaser 5 ℅ (percentage by volume); Free alkalinity 10-18 point; Operating temperature 50 DEG C-60 DEG C; Processing time 8-10min.2.. table tunes to open groove ratio: 2 ‰ (mass percents), pH value 8-9.3.. Phosphating Slot fluting ratio: bonderite 10 ℅ (percent by volume), additive 2 ‰ (percent by volume); Prepare the total acidity total acidity 20-20 point in tank liquor, free acidity 1.5-3.5 point, operating temperature 40 DEG C-50 DEG C; Processing time: 6-10min.
3. preheating: the preheating oven temperature of polyethylene powders controls at 280 ± 5 DEG C, the preheating temperature of polyester/epoxy coating is then 160 DEG C ± 10 DEG C, and the time is 15min.
4. outer plastic-coated: the outer polyethylene that is coated with adopts fluidization dip coating; Outer painting polyester/epoxy powder adopts automatic electrostatic reciprocating engine.
5. solidify: the solidifying temperature of polyethylene powders controls at 100 DEG C ± 10 DEG C, and the time is 10min, and the solidifying temperature of polyester/epoxy powder controls at 180 DEG C-200 DEG C, and the time is 10-15 minute.
6. check coding.The on-line automatic ink jet numbering machine of the qualified rear employing of full inspection carries out coding.
7. mark warehouse-in.Complete production.
Claims (6)
1. a making method for novel steel tube, novel steel tube comprises steel pipe matrix, described outer wall of steel pipe coating polyester/epoxy or polyethylene powders, and steel pipe inner wall is zinc-plated, it is characterized in that, said method comprising the steps of: (1) galvanized pipe; (2) outer wall ball blast; (3) phosphorating treatment: (4) preheating; (5) outer plastic-coated; (6) solidify;
Described phosphorating treatment is specifically followed successively by: alkaline degreasing, washing, spray washing, table tune, phosphatization, washing, spray washing;
In phosphating step, Phosphating Slot fluting ratio: bonderite 10%, additive 2 ‰; Prepare total acidity 20 point, free acidity 1.5-3.5 point, the operating temperature 40 DEG C-50 DEG C in tank liquor; Processing time: 6-10min.
2. the making method of novel steel tube according to claim 1, is characterized in that, in described alkaline degreasing step, degreasing tank fluting ratio is: degreasing powder 5%; Free alkalinity 10-18 point; Operating temperature 50 DEG C-60 DEG C; Processing time 8-10min.
3. the making method of novel steel tube according to claim 1, is characterized in that, during table pacing is rapid, table tunes to open groove ratio: 2 ‰, pH value 8-9.
4. the making method of novel steel tube according to claim 1, is characterized in that, in step (4), the preheating oven temperature of polyethylene powders controls at 280 DEG C ± 5 DEG C, and the preheating temperature of polyester/epoxy coating is then 160 DEG C ± 10 DEG C, and the time is 15min.
5. the making method of novel steel tube according to claim 1, is characterized in that, step (5) China and foreign countries are coated with polyethylene and adopt fluidization dip coating; Outer painting polyester/epoxy powder adopts automatic electrostatic reciprocating engine.
6. the making method of novel steel tube according to claim 1, it is characterized in that, in step (6), the solidifying temperature of polyethylene powders controls at 100 DEG C ± 10 DEG C, and the time is 10min, the solidifying temperature of polyester/epoxy powder controls at 180 DEG C-200 DEG C, and the time is 10-15 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210263449.8A CN102913693B (en) | 2012-07-27 | 2012-07-27 | Novel steel pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210263449.8A CN102913693B (en) | 2012-07-27 | 2012-07-27 | Novel steel pipe and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913693A CN102913693A (en) | 2013-02-06 |
| CN102913693B true CN102913693B (en) | 2015-05-20 |
Family
ID=47612190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210263449.8A Active CN102913693B (en) | 2012-07-27 | 2012-07-27 | Novel steel pipe and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913693B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6803799B2 (en) * | 2017-05-12 | 2020-12-23 | 日本製鉄株式会社 | Manufacturing method of coated steel pipe |
| CN110486573B (en) * | 2019-08-23 | 2021-12-28 | 金洋华 | Method for constructing surface anticorrosion structure of steel special-shaped pipe fitting |
| CN111020546A (en) * | 2019-12-20 | 2020-04-17 | 承德相一机械有限公司 | Phosphating process and phosphating production line for metal threaded rod piece |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020182357A1 (en) * | 1995-02-03 | 2002-12-05 | Ti Group Automotive Systems, Llc | Metal tubing coated with foamed polymeric materials |
| US5972450A (en) * | 1995-10-10 | 1999-10-26 | Bundy Corporation | Metal tubing coated with multiple layers of polymeric materials |
| US6976510B2 (en) * | 2000-01-19 | 2005-12-20 | Itt Manufacturing Enterprises, Inc. | Corrosion resistant metal tube and process for making the same |
| CN2516795Y (en) * | 2001-11-02 | 2002-10-16 | 李志雄 | Steel-plastic composited pipe with cladding material |
| WO2007139228A1 (en) * | 2006-05-30 | 2007-12-06 | Nippon Steel Corporation | Internally polyolefin coated steel pipe having excellent durability, method for producing the same, and plated steel pipe used for the coated steel pipe |
| CN101782166A (en) * | 2010-03-09 | 2010-07-21 | 广东联塑科技实业有限公司 | Plastic coated composite steel pipe |
| CN102330852B (en) * | 2011-07-26 | 2016-06-15 | 广东联塑科技实业有限公司 | The production technique of a kind of external galvanized layer internal plastic coating tubing |
| CN102560461A (en) * | 2012-01-18 | 2012-07-11 | 河北科技大学 | Zirconium and zirconium alloy zinc-manganese composite phosphating solution and phosphating method thereof |
| CN202992419U (en) * | 2012-07-27 | 2013-06-12 | 联塑市政管道（河北）有限公司 | Novel steel pipe |
-
2012
- 2012-07-27 CN CN201210263449.8A patent/CN102913693B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102913693A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202992419U (en) | Novel steel pipe | |
| CN102913693B (en) | Novel steel pipe and manufacturing method thereof | |
| CN201437084U (en) | Composite corrosion-resistant lining | |
| CN102134433A (en) | Environment-friendly water-based epoxy anticorrosion baking varnish | |
| CN101782166A (en) | Plastic coated composite steel pipe | |
| CN102797927A (en) | Novel pipe fitting and manufacturing method thereof | |
| CN101782167A (en) | Plastic coated composite pipe fitting | |
| CN101289741B (en) | Chromium-free passivating liquid for surface treatment of electrogalvanized steel plate and use method thereof | |
| CN201706136U (en) | Underground-to-overground section fuel gas inlet pipe with anticorrosion reinforced layer | |
| CN2819004Y (en) | External high-temperature antiseptic coating acrylic polyurethane steel pipe | |
| CN203442367U (en) | Flange | |
| CN2459509Y (en) | Isolation, corrosion-resistant composite pipe | |
| CN202812606U (en) | Novel pipe fitting | |
| CN102493702A (en) | Manufacturing method of novel anticorrosion transmission tower | |
| CN104312310A (en) | Environment-friendly, energy-saving and corrosion-resisting method for heat exchanger | |
| CN200967938Y (en) | Highway guard bar with hot-spraying zinc polyester composite coating | |
| CN109237137A (en) | A kind of novel steel tube and its manufacturing method | |
| CN2705689Y (en) | Weather resistant anti-outer corrosion coated steel pipe | |
| CN209725500U (en) | City heat supply engineering multiple tube | |
| CN209646165U (en) | A kind of corrosion-resistant desulfurizing tower | |
| CN203267379U (en) | Self-cleaning anti-corrosion heat insulation plate | |
| CN208919492U (en) | A kind of double-layer bumper tubing | |
| CN101607246A (en) | A kind of anti-corrosion method for metal | |
| CN2536879Y (en) | Zinc-aluminum and coating corrosionproof oil pipe | |
| CN202142548U (en) | Installation support of single/dual-axis tracking system of solar photovoltaic plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |