CN103073992A - Production method for seamless pipe with anticorrosive layer - Google Patents
Production method for seamless pipe with anticorrosive layer Download PDFInfo
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- CN103073992A CN103073992A CN201310040635XA CN201310040635A CN103073992A CN 103073992 A CN103073992 A CN 103073992A CN 201310040635X A CN201310040635X A CN 201310040635XA CN 201310040635 A CN201310040635 A CN 201310040635A CN 103073992 A CN103073992 A CN 103073992A
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Abstract
The invention relates to a production method for a seamless pipe with an anticorrosive layer. The production method comprises the following steps: firstly, preparing a steel pipe main body; secondly, preparing an organic clay-polyurethane/polystyrene ternary nano-composite anticorrosive coating; and lastly, causing the steel pipe main body to pass by a high-power motor and driving an injection blade to quickly rotate, causing the milling materials, such as steel sand, steel shots, iron wire sections and mineral substances, to inject the surface of the steel pipe main body under an effect of a centrifugal force, applying roller conveying, adopting a heating airless spraying method for coating the anticorrosive coating on the surface of the processed steel pipe main body so as to form a coating film, and transferring and lifting the steel pipe to a material frame for coolly placing through a spiral lifter, thereby naturally drying the steel pipe. The production process provided by the invention is simple and convenient, the coating film has excellent property and the cost is low.
Description
Technical field
The present invention relates to a kind of production method of steel pipe, relate in particular to a kind of production method with weldless steel tube of preservative coat.
Background technology
Steel pipe corrosion-proof refers to be subjected to the shadow that draws of environment for use and delivery medium to make steel pipe generation chemistry or electrochemical reaction corrosion with the steel pipe of steel pipe in medium is using and transporting.According to the China's Statistical data, annual domestic pipe corrosion direct economic loss more than 2,800 hundred million, at present the whole world annual because of corrosion loss up to 5,000 hundred million dollars.In order effectively to prevent or control pipe corrosion, scientists is being sought more effective method.Large-scale steel structure is the important component part of a large amount of Infrastructure.Bridge, power station, oil transportation water pipe, oil gas storage tank, large production equipment, boats and ships, marine structure, pylon and many buildings all adopt steel pipe in a large number.Although used carbon steel and some low alloy steel have good mechanical property and reasonable price, they exist serious galvanic corrosion problem.Consumption is large, life requirements is long owing to having, so the anticorrosion means that need also have singularity.In various process for corrosion control, mainly select different surface treatment and the method that applies corrosion protection coating to come large-scale steel structure is protected.Up to the present, protection effect is also far undesirable in most situation, mainly is to exist because the tectum life problems that chemistry and mechanics lost efficacy and cause.Therefore develop high-performance, long lifetime and at the process for modifying surface that satisfies under the new situation environmental requirement and aseptic production, be an important task.And solve such problem, be unable to do without hi-tech and new approaches and employing.
At present, the application of nanotechnology in the steel pipe corrosion-proof product also is in the starting stage.Domestic and international all reports of rare type product application.But generally believe, the employing of nanotechnology will be given these field band large results in next life undoubtedly.Reason is very simple, because protect related surfacing and mainly determined by its microtexture from the character of protecting corrosion product, relates to interface problem here, the change of electrochemistry course, the variation of transport behavior, skin-material intensity and plasticity etc.For example, some all kinds of nanoparticle is introduced organic coating can increase its anti-ageing public affairs, and the plasticity of inorganic coating can be improved owing to the nanometer of its structure.
Coating is a kind ofly to be coated in object (protected or decorated object) surface, and can to form the matching capacity engineering materials of the continuous film of firm attachment.Paint matrix is a kind of macromolecular solution or dispersion, and modulation forms coating behind interpolation pigment, the filler.Coating is coated on behind the body surface and is solidified into " continuous film " (film, coating) by different modes and just becomes finished product, plays the effect of expection.Usually coating is comprised of film forming matter, solvent (organic) or the compositions such as water, pigment, filler and auxiliary agent.Wherein, film forming matter is to make the coating firm attachment form the essential substance of continuous film on the coated article surface, is the basis that consists of coating, and the physical and chemical performance of filming is played decisive action; The effect of organic solvent and water is to make film forming matter disperse to form thick liquid, adjustment system viscosity, make coating be fit to store and construction application: pigment is given the coating shades of colour, object is played decoration function, beautify the environment, it plays an important role to antirust, the sun-proof of filming, water-fast chemical proofing; Filler and auxiliary agent then can improve coating producing process, improve coating application and condition of cure and appearance of film, but the package stability of while Effective Raise coating, and Improving The Quality of Products is given coating specific function etc.Look about surrounding space, coating is ubiquitous.Indoor, coating can be coated on wall, refrigerator, cabinet and the furniture, on little significantly coating such as electric motor electric wire, televisor printed wiring, videotape recording and the CD; Out of doors, all used coating on the element of house, automobile and computer system.The purposes of coating is very extensive, mainly comprises the following aspects: (1) provide protection: coating can form at coated article the continuous film of firm attachment, can make the isolation of object and atmosphere and chemical mediator, plays a protective role.External coating coating is means effective, the most most economical in the anticorrosive measure.(2) decoration function: coated article appreciates because aesthetic feeling increases through behind the coatings decoration.Because abundant coating bright in luster is being decorateeed various objects, just so that living environment becomes colorful, it is colourful that people's life also becomes.(3) sign effect: the road setting-out, various traffic sign coating, with expression warning, dangerous, safely, the signal such as advance, stop; Chemical plant different material transport pipe outer wall applies the coating of different colours, makes chemical industry operation personnel work safer.(4) special role: well-known, oneself becomes the another focus that people pay close attention to after internet, genetically engineered etc. present nanotechnology.Nanosecond science and technology are forward position, the intercrossing emerge sciences that progressively grow up at late 1980s, the beginning of the nineties, and its fast development is own through becoming the main flow of 21 century scientific technological advance.High-tech develop rapidly is more and more higher to the requirement of high performance material, and requirement in time is also more and more urgent, and nano-scale synthesizes development high-performance novel material and the new approach that provides is provided the current material performance.
Recently, the concept of oneself formal proposition " nanoscale materials engineering " on the autumn session that U.S. material research association holds, purpose is to accelerate the process that nano material is converted into hi-tech industry, shorten the cycle of fundamental research, applied research and development research, this is the important feature of current novel material research, who makes an effort in this respect, and who just can capture " commanding elevation " of 21 century novel material research, the status of will having the advantage in the research of 21 century novel material.In addition, Germany, Japan and other countries has also been formulated the research project of nano composite material.The upsurge of nano composite material research forms.
Why nano composite material can become the upsurge of research, is because it is compared with traditional material, incomparable high-performance is arranged, and nanotechnology is incorporated in the material, can give traditional material new function.Have the characteristics such as high-strength, high-ductility, high rigidity such as nanotechnology being incorporated into the nano paint that makes in the coated material, play the effects such as protection because of it at material surface and have broad application prospects.
The trend of in recent years nano-coating material development is developed to nano-composite coating material by single nano-coating material.Technical Research Centre of Finland etc. with magnetron sputtering method successfully at charcoal steel surface-coated nano-composite coating (MoSi
2/ SiC), behind the thermal treatment 1h, coating hardness can reach 20.8GPa under 5000C, has improved tens times than the charcoal steel, and have good anti-oxidant, resistance to elevated temperatures, overcome simultaneously individual layer nanometer MoSi
2Coating is the shortcoming of cracking easily, has fully shown the superiority of nano-composite coating.Nanosecond science and technology are not only the impellent that information technology, biotechnology field are developed by leaps and bounds, and provide new opportunity because it has unique physics, chemistry, biological nature for the development of this traditional industry of coating.
Nano paint generally is composited by nano material and organic coating, more strictly says to be called nano composite dope (Nanocomposite coating).Composite coating must satisfy two conditions at least just can be called nano paint: the one, have a kind of yardstick of material at least between 1-100nm, the 2nd, owing to the existence of nanophase is significantly improved coating property or gives coating new function, Neither of the two can be dispensed.
In a broad aspect, nano-coating material also comprises: metal nano coated material and inorganic nano coated material.The metal nano coated material mainly refers to contain in the material nanocrystal, and the inorganic nano coated material then is that usually said nano paint all refers to the organic nano composite coating by the melting between the nanoparticle, sintered combined and get.At present, the nanoparticle for coating mainly is that some metal oxide is (such as TiO
2, Fe
2O
3, ZnO etc.), nano metal powder (such as nanometer Al, Co, Ti, Cr, Nd, Mo etc.), inorganic salts be (such as CaCO
3) and layered silicate (such as the nano level clay of one dimension) in coating, add nanoparticle, such as nano-TiO
2, Fe
2O
3, ZnO, SiO
2, CaCO
3And carbon black etc. can significantly improve physical strength, rheological property, antiseptic property, light fastness and the weather resistance etc. of coating as filler or auxiliary agent.When nanoparticle reaches the nano level dispersion in coating, coating is transparent, and can shield UV-light (for example wavelength 400nm being reached more than 70% with interior ultraviolet reflection rate), therefore can significantly improve it and protect light, protect look, resistance to deterioration and heat-proof quality, can be used as good finishing paint.
Nano-particles filled coating can be used as speciality coating because its good weathering resistance, ornamental, resistance to crocking and germ resistance etc. meet contemporary environmental requirement fully, is paid much attention to, and becomes 21 century one of the most promising coating.Patent CN100503754C discloses a kind of water-base epoxy composite coating and preparation method thereof, and this is invented in the used solidifying agent molecule segment and had both contained hydrophilic radical, contains again lipophilic group, thereby has emulsification function, and need not add emulsifying agent.But the dispersiveness of the fillers such as used nano silicon is not good, free settling.Patent CN101280144B discloses a kind of wave-absorbing heavy-duty anticorrosive nano-coating, and this coating adds the inorganic nano-fillers such as nano-titanium alloy, carbon fiber, copper powder take the epoxy-modified acrylic acid elastic resin as matrix.But want to make nanotechnology in coating, really to be widely used, also need to solve some critical technical problems, can stable dispersion in coating such as nanoparticle, nanoparticle add-on etc.Can the adding that the stable dispersion of nanoparticle in coating is directly connected to nanoparticle make the various performances of coating be improved, and uses the wear-and corrosion-resistant nano paint at steel pipe especially large-sized seamless steel pipe and also have actual demand and need to be resolved hurrily.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of production method with seamless tube of preservative coat is provided.
Technical scheme of the present invention is: a kind of production method with seamless tube of preservative coat, it is characterized in that, and comprise following steps:
1) preparation steel pipe main body:
With solid pipe on inspection and remove surface imperfection, be cut into desired length, feel relieved at pipe threaded end end face, then be sent to the process furnace heating, bore a hole at tapping machine; Constantly rotate simultaneously and advance in perforation, under the effect of roll and top, pipe inside forms cavity gradually, deliver to again continue on the plug mill rolling; Finally by reeling mill expansion wall thickness, through the sizing mill sizing, reach specification requirement;
2) preparation corrosion-resistant abrasion coating:
(a) polyether Glycols, Viscotrol C, the organic clay of molecular weight 3000 joined in the reactor mix, and stir and heat up, when temperature rises to 60 ℃, drip tolylene diisocyanate, 40 ~ 50min adds;
(b) then behind 60 ℃ of insulated and stirred 30 ~ 50min, be warming up to again 80 ℃ of insulated and stirred, the end group nco value is surveyed in sampling;
(c) after NCO reaches 3.0 %, be cooled to 40 ℃, in reaction system, add vinylbenzene, stir 30 ~ 50min, at 40 ℃ of lower vacuum outgas 30 ~ 40min, namely get A component--base polyurethane prepolymer for use as; Wherein the mass ratio of polyether Glycols and Viscotrol C is 6:1 ~ 4:1, the addition of tolylene diisocyanate is pressed isocyanate index (NCO/OH)=1.5:1 ~ 2.5:1 and is calculated, and the addition of vinylbenzene and organic clay is urethane 20 ~ 80 weight parts, polystyrene 40 ~ 80 weight parts, the adding of organic clay 1 ~ 10 weight part by urethane, polystyrene, organic clay ratio of components;
(d) polyether Glycols, Viscotrol C, azobisisobutyronitrile, the dibutyl tin dilaurate with molecular weight 3000 joins in the reactor, behind stirring at normal temperature 30 ~ 50min, obtains the B component; Wherein the mass ratio of polyether glycol and Viscotrol C is 1:4 ~ 1:5, the addition of azobisisobutyronitrile is 3.0 ~ 4.0 % of vinylbenzene quality, and the addition of dibutyl tin dilaurate is 0.3 ~ 0.6 % of polyether Glycols, Viscotrol C, tolylene diisocyanate total mass;
(e) in the B composition weight be the ratio of 8 ~ 15 % of A composition weight, A component and B component are mixed in reactor, be warming up to 100 ℃ of reaction 3 ~ 4 h, 100 ℃ of lower vacuum outgass, be cooled to room temperature, namely get organic clay-Networks of Polyurethane/Polystyrene ternary nano composite anticorrosion coating;
3) the steel pipe main body that step 1) is made drives the eject blade high speed rotating by heavy-duty motor again, make the abrasive materials such as steel sand, shot, wire shorts, mineral substance under centrifugal action, carry out inject process to the steel pipe body surfaces, then using roller-way carries, adopting the heating apneumatic spraying method with step 2) the steel pipe body surfaces that is coated in after the processing of the protective system that makes films with formation, then spiral lift shifts and to be promoted to the bin cold and to put, and carries out seasoning.
Beneficial effect of the present invention is, by the seamless tube with preservative coat that the inventive method makes, its preservative coat combines separately excellent performance one-step synthesis Networks of Polyurethane/Polystyrene inierpeneirating network structure of urethane and polystyrene.And the organic clay of laminated structure is efficiently peeled off in the process of polymerization, and be dispersed in the organic matrix, overcome in the prior art nanoparticle and easily reunited, the shortcoming weak with the organic matrix bonding force, make tectum present nanostructure, thereby bring the variation of a series of membranous layer properties.Usually, tectum relative steel matrix inertia always on chemical property.As reaching good corrosion protection result and not losing efficacy for a long time, just require it and the bonding strength of matrix to want height, cover completely, porosity and defective are few, and good uniformity is shock-resistant, has high intensity and certain toughness.Wherein toughness and certain deformability are important.The major cause that inorganic coating lost efficacy in many situations is exactly its poor toughness.Certainly the total amount that also has bonding force.Nanostructure can make improving with intensity of inorganic cover layer undoubtedly, thereby improves its anti-inefficacy ability.Because deformation Harmony increases, also can improve the bonding strength on it and steel surface.Preparation technology of the present invention is simple and convenient, film performance is excellent, cost is low.
Embodiment
Below by embodiment the present invention is described in further detail, but protection domain of the present invention is not limited to described content.
Embodiment 1:
1) preparation steel pipe main body:
With solid pipe on inspection and remove surface imperfection, be cut into desired length, feel relieved at pipe threaded end end face, then be sent to the process furnace heating, bore a hole at tapping machine; Constantly rotate simultaneously and advance in perforation, under the effect of roll and top, pipe inside forms cavity gradually, deliver to again continue on the plug mill rolling; Finally by reeling mill expansion wall thickness, through the sizing mill sizing, reach specification requirement;
2) preparation corrosion-resistant abrasion coating:
(a) polyether Glycols, Viscotrol C, the organic clay of molecular weight 3000 joined in the reactor mix, and stir and heat up, when temperature rises to 60 ℃, drip tolylene diisocyanate, 40min adds;
(b) then behind 60 ℃ of insulated and stirred 30min, be warming up to again 80 ℃ of insulated and stirred, the end group nco value is surveyed in sampling;
(c) after NCO reaches 3.0 %, be cooled to 40 ℃, in reaction system, add vinylbenzene, stir 30min, at 40 ℃ of lower vacuum outgas 30min, namely get A component--base polyurethane prepolymer for use as; Wherein the mass ratio of polyether Glycols and Viscotrol C is 6:1, the addition of tolylene diisocyanate is pressed isocyanate index (NCO/OH)=1.5:1 and is calculated, and the addition of vinylbenzene and organic clay is 20 parts of urethane, 80 parts of polystyrene, 1 part of adding of organic clay by urethane, polystyrene, organic clay ratio of components;
(d) polyether Glycols, Viscotrol C, azobisisobutyronitrile, the dibutyl tin dilaurate with molecular weight 3000 joins in the reactor, behind the stirring at normal temperature 30min, obtains the B component; Wherein the mass ratio of polyether glycol and Viscotrol C is 1:4 ~ 1:5, and the addition of azobisisobutyronitrile is 3.0 % of vinylbenzene quality, and the addition of dibutyl tin dilaurate is 0.3% of polyether Glycols, Viscotrol C, tolylene diisocyanate total mass;
(e) in the B composition weight be the ratio of 8 % of A composition weight, A component and B component are mixed in reactor, be warming up to 100 ℃ of reaction 3 h, 100 ℃ of lower vacuum outgass, be cooled to room temperature, namely get organic clay-Networks of Polyurethane/Polystyrene ternary nano composite anticorrosion coating;
3) the steel pipe main body that step 1) is made drives the eject blade high speed rotating by heavy-duty motor again, make the abrasive materials such as steel sand, shot, wire shorts, mineral substance under centrifugal action, carry out inject process to the steel pipe body surfaces, then using roller-way carries, adopting the heating apneumatic spraying method with step 2) the steel pipe body surfaces that is coated in after the processing of the protective system that makes films with formation, then spiral lift shifts and to be promoted to the bin cold and to put, and carries out seasoning.
Embodiment 2:
1) preparation steel pipe main body:
With solid pipe on inspection and remove surface imperfection, be cut into desired length, feel relieved at pipe threaded end end face, then be sent to the process furnace heating, bore a hole at tapping machine; Constantly rotate simultaneously and advance in perforation, under the effect of roll and top, pipe inside forms cavity gradually, deliver to again continue on the plug mill rolling; Finally by reeling mill expansion wall thickness, through the sizing mill sizing, reach specification requirement;
2) preparation corrosion-resistant abrasion coating:
(a) polyether Glycols, Viscotrol C, the organic clay of molecular weight 3000 joined in the reactor mix, and stir and heat up, when temperature rises to 60 ℃, drip tolylene diisocyanate, 45min adds;
(b) then behind 60 ℃ of insulated and stirred 40min, be warming up to again 80 ℃ of insulated and stirred, the end group nco value is surveyed in sampling;
(c) after NCO reaches 3.0 %, be cooled to 40 ℃, in reaction system, add vinylbenzene, stir 40min, at 40 ℃ of lower vacuum outgas 35min, namely get A component--base polyurethane prepolymer for use as; Wherein the mass ratio of polyether Glycols and Viscotrol C is 5:1, the addition of tolylene diisocyanate is pressed isocyanate index (NCO/OH)=2:1 and is calculated, and the addition of vinylbenzene and organic clay is 40 parts of urethane, 60 parts of polystyrene, 5 parts of addings of organic clay by urethane, polystyrene, organic clay ratio of components;
(d) polyether Glycols, Viscotrol C, azobisisobutyronitrile, the dibutyl tin dilaurate with molecular weight 3000 joins in the reactor, behind stirring at normal temperature 30 ~ 50min, obtains the B component; Wherein the mass ratio of polyether glycol and Viscotrol C is 1:4.5, and the addition of azobisisobutyronitrile is 3.5 % of vinylbenzene quality, and the addition of dibutyl tin dilaurate is 0.4 % of polyether Glycols, Viscotrol C, tolylene diisocyanate total mass;
(e) in the B composition weight be the ratio of 12 % of A composition weight, A component and B component are mixed in reactor, be warming up to 100 ℃ of reaction 3 h, 100 ℃ of lower vacuum outgass, be cooled to room temperature, namely get organic clay-Networks of Polyurethane/Polystyrene ternary nano composite anticorrosion coating;
3) the steel pipe main body that step 1) is made drives the eject blade high speed rotating by heavy-duty motor again, make the abrasive materials such as steel sand, shot, wire shorts, mineral substance under centrifugal action, carry out inject process to the steel pipe body surfaces, then using roller-way carries, adopting the heating apneumatic spraying method with step 2) the steel pipe body surfaces that is coated in after the processing of the protective system that makes films with formation, then spiral lift shifts and to be promoted to the bin cold and to put, and carries out seasoning.
Embodiment 3:
1) preparation steel pipe main body:
With solid pipe on inspection and remove surface imperfection, be cut into desired length, feel relieved at pipe threaded end end face, then be sent to the process furnace heating, bore a hole at tapping machine; Constantly rotate simultaneously and advance in perforation, under the effect of roll and top, pipe inside forms cavity gradually, deliver to again continue on the plug mill rolling; Finally by reeling mill expansion wall thickness, through the sizing mill sizing, reach specification requirement;
2) preparation corrosion-resistant abrasion coating:
(a) polyether Glycols, Viscotrol C, the organic clay of molecular weight 3000 joined in the reactor mix, and stir and heat up, when temperature rises to 60 ℃, drip tolylene diisocyanate, 50min adds;
(b) then behind 60 ℃ of insulated and stirred 50min, be warming up to again 80 ℃ of insulated and stirred, the end group nco value is surveyed in sampling;
(c) after NCO reaches 3.0 %, be cooled to 40 ℃, in reaction system, add vinylbenzene, stir 50min, at 40 ℃ of lower vacuum outgas 40min, namely get A component--base polyurethane prepolymer for use as; Wherein the mass ratio of polyether Glycols and Viscotrol C is 4:1, the addition of tolylene diisocyanate is pressed isocyanate index (NCO/OH)=2.5:1 and is calculated, and the addition of vinylbenzene and organic clay is 80 parts of urethane, 40 parts of polystyrene, 10 parts of addings of organic clay by urethane, polystyrene, organic clay ratio of components;
(d) polyether Glycols, Viscotrol C, azobisisobutyronitrile, the dibutyl tin dilaurate with molecular weight 3000 joins in the reactor, behind the stirring at normal temperature 50min, obtains the B component; Wherein the mass ratio of polyether glycol and Viscotrol C is 1:5, and the addition of azobisisobutyronitrile is 4.0 % of vinylbenzene quality, and the addition of dibutyl tin dilaurate is 0.6 % of polyether Glycols, Viscotrol C, tolylene diisocyanate total mass;
(e) in the B composition weight be the ratio of 15 % of A composition weight, A component and B component are mixed in reactor, be warming up to 100 ℃ of reaction 4 h, 100 ℃ of lower vacuum outgass, be cooled to room temperature, namely get organic clay-Networks of Polyurethane/Polystyrene ternary nano composite anticorrosion coating;
3) the steel pipe main body that step 1) is made drives the eject blade high speed rotating by heavy-duty motor again, make the abrasive materials such as steel sand, shot, wire shorts, mineral substance under centrifugal action, carry out inject process to the steel pipe body surfaces, then using roller-way carries, adopting the heating apneumatic spraying method with step 2) the steel pipe body surfaces that is coated in after the processing of the protective system that makes films with formation, then spiral lift shifts and to be promoted to the bin cold and to put, and carries out seasoning.
The weldless steel tube with preservative coat that the present invention makes, the bonding strength of its preservative coat and matrix is high, covers completely, and porosity and defective are few, and good uniformity is shock-resistant, has superperformance.
Claims (1)
1. the production method with seamless tube of preservative coat is characterized in that, comprises following steps:
1) preparation steel pipe main body:
With solid pipe on inspection and remove surface imperfection, be cut into desired length, feel relieved at pipe threaded end end face, then be sent to the process furnace heating, bore a hole at tapping machine; Constantly rotate simultaneously and advance in perforation, under the effect of roll and top, pipe inside forms cavity gradually, deliver to again continue on the plug mill rolling; Finally by reeling mill expansion wall thickness, through the sizing mill sizing, reach specification requirement;
2) preparation corrosion-resistant abrasion coating:
(a) polyether Glycols, Viscotrol C, the organic clay of molecular weight 3000 joined in the reactor mix, and stir and heat up, when temperature rises to 60 ℃, drip tolylene diisocyanate, 40 ~ 50min adds;
(b) then behind 60 ℃ of insulated and stirred 30 ~ 50min, be warming up to again 80 ℃ of insulated and stirred, the end group nco value is surveyed in sampling;
(c) after NCO reaches 3.0 %, be cooled to 40 ℃, in reaction system, add vinylbenzene, stir 30 ~ 50min, at 40 ℃ of lower vacuum outgas 30 ~ 40min, namely get A component--base polyurethane prepolymer for use as; Wherein the mass ratio of polyether Glycols and Viscotrol C is 6:1 ~ 4:1, the addition of tolylene diisocyanate is pressed isocyanate index (NCO/OH)=1.5:1 ~ 2.5:1 and is calculated, and the addition of vinylbenzene and organic clay is urethane 20 ~ 80 weight parts, polystyrene 40 ~ 80 weight parts, the adding of organic clay 1 ~ 10 weight part by urethane, polystyrene, organic clay ratio of components;
(d) polyether Glycols, Viscotrol C, azobisisobutyronitrile, the dibutyl tin dilaurate with molecular weight 3000 joins in the reactor, behind stirring at normal temperature 30 ~ 50min, obtains the B component; Wherein the mass ratio of polyether glycol and Viscotrol C is 1:4 ~ 1:5, the addition of azobisisobutyronitrile is 3.0 ~ 4.0 % of vinylbenzene quality, and the addition of dibutyl tin dilaurate is 0.3 ~ 0.6 % of polyether Glycols, Viscotrol C, tolylene diisocyanate total mass;
(e) in the B composition weight be the ratio of 8 ~ 15 % of A composition weight, A component and B component are mixed in reactor, be warming up to 100 ℃ of reaction 3 ~ 4 h, 100 ℃ of lower vacuum outgass, be cooled to room temperature, namely get organic clay-Networks of Polyurethane/Polystyrene ternary nano composite anticorrosion coating;
3) the steel pipe main body that step 1) is made drives the eject blade high speed rotating by heavy-duty motor again, make the abrasive materials such as steel sand, shot, wire shorts, mineral substance under centrifugal action, carry out inject process to the steel pipe body surfaces, then using roller-way carries, adopting the heating apneumatic spraying method with step 2) the steel pipe body surfaces that is coated in after the processing of the protective system that makes films with formation, then spiral lift shifts and to be promoted to the bin cold and to put, and carries out seasoning.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727354A (en) * | 2013-11-30 | 2014-04-16 | 常熟市东鑫钢管有限公司 | Production method for seamless steel tube with anti-corrosion layer |
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| CN101327492A (en) * | 2008-07-30 | 2008-12-24 | 郝建庚 | Process and system for manufacturing hot-rolled seamless tube |
| CN202192529U (en) * | 2011-07-06 | 2012-04-18 | 泽州县金秋铸造有限责任公司 | Surface treatment device for centrifugal casting pipe |
| CN102786873A (en) * | 2012-08-21 | 2012-11-21 | 昆明理工大学 | Nano compound anticorrosive paint and preparation method thereof |
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- 2013-02-03 CN CN201310040635XA patent/CN103073992A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483524A (en) * | 2002-09-21 | 2004-03-24 | 王旭午 | Technology for rolling seamless steel pipe |
| CN101327492A (en) * | 2008-07-30 | 2008-12-24 | 郝建庚 | Process and system for manufacturing hot-rolled seamless tube |
| CN202192529U (en) * | 2011-07-06 | 2012-04-18 | 泽州县金秋铸造有限责任公司 | Surface treatment device for centrifugal casting pipe |
| CN102786873A (en) * | 2012-08-21 | 2012-11-21 | 昆明理工大学 | Nano compound anticorrosive paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727354A (en) * | 2013-11-30 | 2014-04-16 | 常熟市东鑫钢管有限公司 | Production method for seamless steel tube with anti-corrosion layer |
| CN103727354B (en) * | 2013-11-30 | 2016-01-20 | 常熟市东鑫钢管有限公司 | There is the production method of the seamless steel pipe of anticorrosive coat |
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Application publication date: 20130501 |