CN202442062U - Coating pipe - Google Patents
Coating pipe Download PDFInfo
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- CN202442062U CN202442062U CN2012200681907U CN201220068190U CN202442062U CN 202442062 U CN202442062 U CN 202442062U CN 2012200681907 U CN2012200681907 U CN 2012200681907U CN 201220068190 U CN201220068190 U CN 201220068190U CN 202442062 U CN202442062 U CN 202442062U
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- coating
- pipe
- nylon
- coated pipe
- tubing
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Abstract
The utility model relates to a coating pipe, and especially relates to a coating pipe applied to a fluid carrying pipe system in a vehicle. The coating pipe comprises a matrix pipe (1), a zinc-aluminum alloy coating (3), a nylon primer coating (5) and a nylon coating (6), wherein the zinc-aluminum alloy coating (3), the nylon primer coating (5) and the nylon coating (6) are laid on the matrix pipe (1) from inside to outside, a pre-galvanized layer (2) is added between the matrix pipe and the zinc-aluminum alloy coating, a sealant coating (4) is coated between the zinc-aluminum alloy coating and the nylon primer coating, and a polypropylene coating (7) is added on the outside of the nylon coating. The coating pipe provided by the utility model can meet the requirements for the application performance and service lives of pipe systems such as brake pipes or fuel pipes for high-grade vehicles, is further improved in the aspects of anticorrosion performance and interlayer composite strength, and can meet more stringent requirements suggested in the aspects of wear resistance, impact resistance, protection and the like of pipes.
Description
Technical field
The utility model relates to a kind of coated pipe, particularly relates to the coating tubing that is used for automobile fluid bearings pipe-line system, for example has the automobile brake pipe and the fuel pipe of composite coating.
Background technique
Reason owing to conditions for equipment use; May cause its metal parts to be corroded under some situation and influence the normal use of local system and even entire equipment; The steel wire that more for example in rugged environment, uses, steel strand, tubing, sheet material and band etc.; Particularly employed tubing in the automobile pipe-line system need possess higher corrosion resistance or take corresponding protective measures to guarantee its working life.
In automobile manufacture industry, early stage domestic employed automobile brake, fuel pipe are copper pipe mostly, and its cost is very high.In the eighties mid-term in last century, Bandaid pipe welding technique (TI automobile, Bandaid pipe-line system Co., Ltd) is from passing to China abroad; In view of the above; Rolling and volume is welded into double-deck welded tube by low carbon steel copper facing steel band, or rolling and forms the individual layer welded tube through upset butt welding by the low carbon steel steel band, and this double-deck welded tube passes through coating protection with the individual layer welded tube and processes; Be widely used in automobile brake, fuel piping system, with the high copper pipe of displacement cost.
Development along with new material, new process; Allumen is applied to the base steel parts as anticorrosion coating material; It has the characteristic (base steel and environment are separated and played the effect of barrier protection layer) of aluminium and the characteristic (playing the effect of electrochemical protection as sacrificial anode) of zinc concurrently; Especially compare with traditional hot galvanizing coating, higher resistance to corrosion can be provided under various atmosphere environments.Abroad last century the eighties succeed in developing and a kind of novel zinc aluminum alloy coating material has been produced in commercialization; That is so-called Galfan (Gao Erfan; Zn-5%Al mixed rare earth alloy coating); It possesses superior corrosion resistance, good workability and weldability, has obtained in the last few years using widely.Some auto parts machinery manufacturers have carried out some favourable exploration and researchs on this basis both at home and abroad, in the hope of the automobile tubing that obtains to be suitable for, such as Brake pipe and fuel pipe etc.
For example, Chinese utility model patent CN2932004Y discloses a kind of automobile brake oil pipe and transport pipe that has nylon coating, wherein, on double coiled welded tube, adheres to four layers of coating in succession: zinc or Galfan alloy, passivating film, tackiness agent and nylon.The main points of this model utility are that the bigger nylon coating of employing thickness provides anti-wear ability and desertification stone impact capacity, plays the effect of protection tubing internal layer, simultaneously, utilizes nylon material itself to strengthen the overall corrosion resistance of tubing.According to a kind of possibility of this model utility, if first coating adopts zinc, particularly, when peelling off nylon coating, be common galvanized pipe in the joint area of tubing end, it does not reach the anti-corrosive properties requirement of automobile pipeline far away; According to the alternative dispensing means of this model utility, if first coating adopts the Galfan alloy, although this alloy material itself can provide better antiseptic property; But receiving existing production technology level limits; Defectives such as plating leakage, pin hole very easily occur, still have the etching problem of tubing, and be directed to automobile pipeline accessory; Using the uniting of Galfan alloy and nylon coating not is always can reach gratifying effect, and this point has further explanation hereinafter.
TI motor corporation provides a kind of so-called Nygal coating tubing that is applied to automobile brake and fuel piping system, and this tubing is to form through upward applying one deck Galfan alloy coat and one deck nylon coating at basal body pipe (individual layer welded tube or bimetallic tube).Usually, thickness>=3 of Galfan alloy (Zn-5%Al) coating micron, alloy coat average weight 50-60g/m
2And then coating nylon priming paint (1-2 micron), and then extrude PA (nylon) coating (>=120 microns), form braking or the fuel oil tubing that has Galfan alloy coat and nylon coating at last.
Find in the middle of the practice that above-mentioned coating tubing still exists following shortcoming:
-Galfan alloy coat is the same with most of alloy coats, and formed hot dipping coating contains pin hole, and this directly has influence on the antiseptic property of coating, and usually, red rust just appearred in the Galfan alloy coat through neutral salt spray test 100-160 hour;
The antiseptic property and the coating thickness of-Galfan alloy coat have direct relation, and the thick more antiseptic property of coating is good more, but under existing processes and equipment and technology condition, the thickness of Galfan alloy coat is difficult to do thicklyer, so antiseptic property is restricted.Especially all the more so in the tubing end, owing to often will peel off nylon coating during the working joint structure, the corrosion resistance of this weak link directly depends on the thickness zinc element total amount of sacrificial anode (in other words as) of zinc layer or Galfan alloy coat;
-because the Galfan alloy coat forms pin hole easily; Still possible residual minim moisture or wet components in follow-up cooling, dry back pin hole; Coating nylon priming paint and nylon coating very easily cause coating adhesion bad, therefore in this case; Requirement to the aftertreatment technology condition is very high, otherwise just can't make the tubing that possesses enough combined strength binations;
-for a lot of high-end vehicles or the vehicle that under rugged environment, uses, harsh more requirement has been proposed aspect, the protective wear-resisting, shock-resistant at tubing.Although nylon material has higher abrasion-resistance and good alkaline-resisting, oil resistant characteristic, because its moisture absorption big (suction back mechanical strength reduces greatly) and not anti-strong acid and oxygenant can't satisfy especially to the growing requirement of special requirement.
Summary of the invention
The purpose of the utility model is; A kind of coated pipe is provided; Especially for the coating tubing of fluid bearings pipe-line system in the automobile, it has overcome the defective of above-mentioned existing technology, can satisfy the usability and the life requirements of luxury car's pipe-line system such as Brake pipe or fuel pipe.On the one hand; This coated pipe is being further enhanced aspect antiseptic property and the interlayer combined strength bination, still guarantees machine shaping characteristic and the mechanical load performance that it is good simultaneously, and; The manufacturing of this coated pipe still is based on existing processes and equipment and technology condition, and feasibility and Economy are all good; On the other hand, the harsh more requirement that this coated pipe should be able to satisfy is wear-resisting, shock-resistant at tubing, propose aspect the protective is particularly for a lot of high-end vehicles or the vehicle that under rugged environment, uses.
Particularly; The utility model proposes a kind of like this coated pipe, comprising: matrix tubing and on this matrix tubing, from inside to outside lay, allumen coating, nylon bottom lacquer coating and nylon coating, it is characterized in that; Between said matrix tubing and allumen coating, be equipped with a preparatory zinc coat; And between said allumen coating and said nylon prime coat, scribble a sealing compound coating, and, be equipped with a polypropylene coating in said nylon coating outside.
The core idea of the utility model technological scheme is, to coating kind in the coated pipe and coating structure take all factors into consideration, reasonable disposition, form the remarkable new-type composite coating structure of a kind of performance.Wherein, In order to thicken the thickness of sacrificing positive pole coating; That is increase zinc element total amount, between matrix tubing and allumen coating, add a preparatory zinc coat, thereby form double-deck sacrificial anodic coating; Better electrochemical corrosion protection can be provided, and the coating of this double-layer structure can make on existing hot dipping production line (the hot dipping production line that for example is used for automobile brake or fuel pipe).In addition, on the allumen coating, apply a sealing compound coating, eliminated the pin hole of hot dip coating surface whereby effectively; Thereby; After follow-up drying, just be not easy residual moisture or wet components, following one deck nylon priming paint adheres to easily, has improved the adhesion of nylon coating.Particularly require higher pipeline section for mechanical load and antiseptic property; Also add a polypropylene (PP) coating in the nylon coating outside; Because polypropylene possesses good resistance to water soak and antiacid caustic corrosion property, so this coating has further been improved the barrier propterty of whole tubing accessory.
Advantageously, said allumen coating is the Galmeg-Jin Gaomei coating of coating thickness >=3 micron.A kind of special special metals of TI automobile (China) Bandaid pipe-line system Co., Ltd research and development; Be called Galmeg-Jin Gaomei alloy; Comprise Zn-(5-7%) Al-(2.5-3.5%) several kinds of extraordinary rare earth elementss of Mg+ (0.03-0.50%), this alloy material is known by the applicant's application for a patent for invention CN101875255A and CN101876015A for example.At this preferably, the coating average weight of said Galmeg-Jin Gaomei coating is 50-60g/m
2
Advantageously, the thickness of said preparatory zinc coat is the 1-2 micron.
Said sealing compound coating can be one deck very thin, be added with the coating sealing compound or the adhesive of functional component in case of necessity; Be particularly suitable for but be not limited to adopt containing polyvinyl alcohol and phosphatic mixture or adopting the polyvinyl butyral resin coating, its thickness is preferably the 0.5-1 micron.
The thickness of said nylon bottom lacquer coating can be the 1-2 micron.And the thickness of said nylon coating is preferably >=120 microns, to satisfy particularly luxury car with wear-resisting, the impact resistance requirement of Brake pipe or fuel pipe.Nylon material can be selected PA11 or PA12 for use.
Advantageously, the thickness of said polypropylene coating is at least 0.825 millimeter, so that to the tubing accessory reliable protection is provided.
In the coated pipe of the utility model, said matrix tubing can be double-deck welded tube or individual layer welded tube, for example itself has or the Low Carbon Steel Pipe of band coating not.
The coated pipe of the utility model is especially suitable for use as the coating tubing of fluid bearings pipe-line system in the automobile, for example automobile brake pipe, fuel pipe or the like, and for realizing this connection of coating tubing in associated pipe, the tubing end is furnished with joint structure.The type of this joint structure and form are decided according to concrete use occasion and operative norm; Can comprise mechanical-moulded part; Such as structural form such as enlarging, bending, flanging, ring be protruding; Also or be the combination in any of multiple structural form, this moulding section normally is processed to form after nylon and polypropylene material are peelled off in the tubing end.
Description of drawings
Hereinafter will further be set forth the technological scheme of the utility model with reference to preferred embodiment shown in the drawings.Each accompanying drawing only is used for the purpose of signal, is not ratio or plotted in strict accordance with reality, wherein:
Fig. 1: be cross sectional representation by the known Nygal coated pipe of existing technology;
Fig. 2: be the cross sectional representation of the coated pipe of the utility model;
Fig. 3-7: be the tubing end construction schematic representation of the multiple application example of the utility model coated pipe.
Embodiment
Fig. 1 (existing technology) is depicted as the cross sectional representation of the so-called Nygal coating tubing of TI motor corporation, and this tubing is to form with one deck nylon coating 6 through go up coating one deck Galfan alloy coat 3 at basal body pipe 1 (individual layer welded tube or bimetallic tube).Usually, thickness>=3 of Galfan alloy (Zn-5%Al) coating micron, alloy coat average weight 50-60g/m
2And then coating nylon priming paint 5 (1-2 micron), and then extrude PA (nylon) coating 6 (>=120 microns), form braking or the fuel oil tubing that has Galfan alloy coat and nylon coating at last.
Only be exemplary below, do not constitute to the application's disclosure and to the utility model and use or the restriction of purposes to the explanation of the utility model.
Shown in Figure 2 is the cross sectional representation of the coated pipe of the utility model.This coated pipe comprises the matrix tubing 1 that is made up of double-deck welded tube or individual layer welded tube, on this matrix tubing, from inside to outside is coated with preparatory zinc coat 2, allumen coating 3, sealing compound coating 4, nylon bottom lacquer coating 5, nylon coating 6 and polypropylene coating 7 successively.
According to the preferred embodiment of the utility model, said allumen coating should be selected the Galmag-Jin Gaomei alloy of TI automobile (China) Bandaid pipe-line system Co., Ltd research and development for use, and what said sealing compound coating adopted is the polyvinyl butyral resin coating.The flow of this coated pipe and industry production method are following: the uncoiling of matrix tubing, and------------------coating nylon priming paint-heat cure-----composite coating tubing is coiled in cooling--drying--to cooling-drying to hot dipping Galmag-Jin Gaomei coating to induction heating to cooling-drying to induction heating in heat cure to extrude PA (nylon) to apply sealing compound coating-heat cure in hot galvanizing in the plating pretreatment.------------aligning--on-line shearing--has the tubing scale straight tube of polypropylene coating with this to aligning to aligning in the joint flaw detection in cooling to extrude PP (polypropylene) in order to obtain possessing the more tubing accessory of permanent protective property ability, further to carry out following technological process: with the uncoiling of composite coating tubing.
According to this, for example on automobile brake, fuel pipe hot dipping production line,, apply Galmeg-Jin Gaomei coating (thickness>=3 micron, coating average weight 50-60g/m then at first at matrix tubing outside preplating zinc 1-2 micron
2).Here; The thickness of Galmeg-Jin Gaomei coating in other words coated weight-as existing technology such-still be according to existing processes and equipment and technology condition easy to reach level; And after zinc coat and Galmeg-Jin Gaomei coating bilayer superposes in advance; The thickness of sacrificing positive pole protective coating is increased, and has just brought the lifting of antiseptic property thus.
On Galmeg Jin Gaomei coating, adopt polyvinyl butyral resin to form the very thin sealing compound coating of one deck, this layer sealing compound coating thickness is the 0.5-1 micron, has eliminated the pin hole of hot dip coating surface effectively.Owing to eliminated pin hole, just be not easy residual moisture or wet components after the follow-up drying, following one deck nylon priming paint adheres to easily, thereby can improve the adhesion of nylon coating.
Experiment shows that hot galvanizing+Galmeg-Jin Gaomei coating+sealing compound (polyvinyl butyral resin) coating did not go out red rust through neutral salt spray test 600-1600 hour.It is thus clear that hot galvanizing and Galmeg-Jin Gaomei coating and sealing compound are united the formed coating structure of use and have been improved antiseptic property effectively.
On the basis of hot galvanizing+Galmeg-Jin Gaomei coating+sealing compound (polyvinyl butyral resin) coating, coating nylon priming paint and nylon (PA) coating, nylon coating thickness >=120 micron form a kind of composite coating tubing at last.Experiment shows that the anti-neutral salt spray test of this composite coating tubing did not have red rust with upper surface in 12000 hours and occurs, and visible antiseptic property significantly promotes, and in addition, investigates on the whole, and each coating adhesion is good.On the basis of this composite coating tubing; Further extrude polypropylene (PP) coating; It is thick to be at least 0.825mm; Thereby form the enhancement mode composite coating tubing that has polypropylene coating, this novel tube can provide wear-resisting, shock-resistant, corrosion resistance better, that adapt to harsh service condition, to satisfy the performance requirement of top luxury car with Brake pipe or fuel oil tubing.
Removing polypropylene coating (also removing nylon coating in case of necessity) afterwards; The requirement that said enhancement mode composite coating tubing can satisfy automobile brake, fuel pipe postorder processing (like moulding process such as enlarging, bendings) well can realize required texturing processing and accuracy of manufacturing.Fig. 3-7 shows the tubing end construction schematic representation of the multiple application example of the utility model coated pipe, certainly, concrete structure among the figure and size (unit: mm) just illustrative rather than restrictive, like following table:
| The pipe specification | Operative norm | The enlarging code | |
| 4.75DW | R2 | Z183 | Fig. 3 |
| 4.75DW | 300C/R2 | ISO?F-Flare | Fig. 4 |
| 6.35DW | EPSILON?II | Z183 | Fig. 5 |
| 7.94SW | J1/300C/R2 | SAE?QC | Fig. 6 |
| 9.53SW | R2 | X-B?PS-7254 | Fig. 7 |
The pipe fitting of processing has thus satisfied the usability and the life requirements of luxury car's pipe-line system such as Brake pipe or fuel pipe; Particularly in the weakness zone of end, also possess remarkable corrosion resistance, and can satisfy the harsh more requirement that proposes aspect, the protective wear-resisting, shock-resistant at tubing for high-end vehicle or the vehicle that under rugged environment, uses.
Claims (12)
1. coated pipe; Comprise: matrix tubing (1) and the allumen coating (3) of on this matrix tubing, from inside to outside laying, nylon bottom lacquer coating (5) and nylon coating (6); It is characterized in that, between said matrix tubing and allumen coating, be equipped with a preparatory zinc coat (2), and between said allumen coating and said nylon prime coat, scribble a sealing compound coating (4); And, be equipped with a polypropylene coating (7) in said nylon coating outside.
2. by the described coated pipe of claim 1, it is characterized in that said allumen coating is the Galmeg-Jin Gaomei coating of coating thickness >=3 micron.
3. by the described coated pipe of claim 2, it is characterized in that the coating average weight of said Galmeg-Jin Gaomei coating is 50-60g/m
2
4. by each described coated pipe of claim 1 to 3, it is characterized in that the thickness of said preparatory zinc coat is the 1-2 micron.
5. by each described coated pipe of claim 1 to 3, it is characterized in that said sealing compound coating is the polyvinyl butyral resin coating of thickness 0.5-1 micron.
6. by each described coated pipe of claim 1 to 3, it is characterized in that the thickness of said nylon bottom lacquer coating is the 1-2 micron.
7. by each described coated pipe of claim 1 to 3, it is characterized in that the thickness of said nylon coating is >=120 microns.
8. by each described coated pipe of claim 1 to 3, it is characterized in that the thickness of said polypropylene coating is at least 0.825 millimeter.
9. by each described coated pipe of claim 1 to 3, it is characterized in that said matrix tubing is double-deck welded tube or individual layer welded tube.
10. by each described coated pipe of claim 1 to 3, it is characterized in that this coated pipe is the coating tubing that is used for automobile fluid bearings pipe-line system, the tubing end is furnished with joint structure.
11., it is characterized in that said joint structure comprises mechanical-moulded part by the described coated pipe of claim 10.
12., it is characterized in that said mechanical-moulded part comprises one or more in enlarging, bending, flanging, protruding these structural forms of ring by the described coated pipe of claim 11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200681907U CN202442062U (en) | 2012-02-29 | 2012-02-29 | Coating pipe |
| PCT/CN2013/072017 WO2013127353A1 (en) | 2012-02-29 | 2013-02-28 | Coated tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200681907U CN202442062U (en) | 2012-02-29 | 2012-02-29 | Coating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442062U true CN202442062U (en) | 2012-09-19 |
Family
ID=46823513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200681907U Expired - Fee Related CN202442062U (en) | 2012-02-29 | 2012-02-29 | Coating pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442062U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127353A1 (en) * | 2012-02-29 | 2013-09-06 | Bundy Fluid Systems Co., Ltd | Coated tube |
| CN103697248A (en) * | 2013-12-31 | 2014-04-02 | 荆大（荆州）汽车配件有限公司 | Production process for continuously coating nylon on surface of welding pipe |
| CN109980226A (en) * | 2019-03-28 | 2019-07-05 | 中国科学院青岛生物能源与过程研究所 | A kind of zinc load and its preparation method and application with polyamide light oxidant layer |
-
2012
- 2012-02-29 CN CN2012200681907U patent/CN202442062U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127353A1 (en) * | 2012-02-29 | 2013-09-06 | Bundy Fluid Systems Co., Ltd | Coated tube |
| CN103697248A (en) * | 2013-12-31 | 2014-04-02 | 荆大（荆州）汽车配件有限公司 | Production process for continuously coating nylon on surface of welding pipe |
| CN109980226A (en) * | 2019-03-28 | 2019-07-05 | 中国科学院青岛生物能源与过程研究所 | A kind of zinc load and its preparation method and application with polyamide light oxidant layer |
| CN109980226B (en) * | 2019-03-28 | 2022-05-10 | 中国科学院青岛生物能源与过程研究所 | Zinc cathode with polyamide brightener layer and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20210228 |