CN114152136A - Stainless steel welded pitted surface pipe and processing technology thereof - Google Patents
Stainless steel welded pitted surface pipe and processing technology thereof Download PDFInfo
- Publication number
- CN114152136A CN114152136A CN202111514688.1A CN202111514688A CN114152136A CN 114152136 A CN114152136 A CN 114152136A CN 202111514688 A CN202111514688 A CN 202111514688A CN 114152136 A CN114152136 A CN 114152136A
- Authority
- CN
- China
- Prior art keywords
- pipe
- super
- stainless steel
- pitted
- welding
- 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
Links
- 238000012545 processing Methods 0.000 title claims abstract description 55
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 46
- 239000010935 stainless steel Substances 0.000 title claims abstract description 46
- 238000005516 engineering process Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 155
- 239000010959 steel Substances 0.000 claims abstract description 155
- 238000003466 welding Methods 0.000 claims abstract description 90
- 238000000137 annealing Methods 0.000 claims abstract description 85
- 230000017525 heat dissipation Effects 0.000 claims abstract description 74
- 239000011248 coating agent Substances 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 238000005096 rolling process Methods 0.000 claims abstract description 49
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 47
- 239000006229 carbon black Substances 0.000 claims description 34
- 239000003822 epoxy resin Substances 0.000 claims description 32
- 229920000647 polyepoxide Polymers 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 26
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 230000006698 induction Effects 0.000 claims description 16
- 229920000459 Nitrile rubber Polymers 0.000 claims description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 14
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000003085 diluting agent Substances 0.000 claims description 8
- 239000005543 nano-size silicon particle Substances 0.000 claims description 8
- 239000012745 toughening agent Substances 0.000 claims description 5
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 24
- 230000008569 process Effects 0.000 abstract description 21
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 17
- 238000005452 bending Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- 239000011324 bead Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 10
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
- F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2413/00—Characterised by the use of rubbers containing carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/02—Coatings; Surface treatments hydrophilic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Geometry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a stainless steel welded pitted surface pipe and a processing technology thereof, the stainless steel welded pitted surface pipe prepared by the invention is a cylindrical pipe body, the inner wall and the outer wall of the pipe body are both provided with rolled patterns, and the outer wall of the pipe body is coated with a super-hydrophilic heat dissipation coating; the processing technology comprises the steps of firstly rolling two sides of the surface of a steel plate; welding the rolled steel plate into a pipe; after welding, annealing the steel pipe, and cleaning the steel pipe after the annealing is finished; preparing super-hydrophilic heat dissipation gel, spraying the prepared gel on the outer wall of the steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe; the stainless steel welded pitted surface pipe prepared by the invention has simple processing technology, only one annealing process is carried out during preparation, energy cost is saved, and complex patterns can be processed on the inner wall of the steel pipe, so that the influence on internal fluid can be enhanced by further increasing the heat exchange area, and the stainless steel welded pitted surface pipe has wide application space in the field of heat exchange pipelines in China.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a stainless steel welded pitted surface pipe and a processing technology thereof.
Background
Stainless steel tube is a kind of tube material with many applications in the heat exchange field, and has been improved in recent years in the direction of improving the heat exchange effect under the improvement of people, starting from the way of reducing the thickness of the tube wall and reducing the thickness of the heat transfer medium, and starting to gradually deform the shape of the tube body later, various finned tubes are developed to meet the influence of the heat exchange rate in the heat exchange process, the stainless heat exchange tube already includes many kinds of doors, however, the existing heat dissipation tubes are mostly threaded tubes, and the contact area is increased by means of threads arranged on the surface of the tube body, so as to improve the heat dissipation efficiency. However, the heat dissipation structure using the threads and the convex teeth thereof has limited heat dissipation performance and complex processing technology, so that a heat exchange tube meeting the heat exchange requirement and having a less complex processing technology is urgently needed to meet the requirement of people.
Disclosure of Invention
The invention aims to provide a stainless steel welded pitted surface pipe and a processing technology thereof, which aim to solve the problems in the background technology.
The technical problem is solved, and the invention provides the following technical scheme: a stainless steel welded pitted surface pipe has the following characteristics: the stainless steel welded pitted surface pipe is a cylindrical pipe body and is formed by welding steel plates end to end; is formed by welding steel plates end to end; the stainless steel welding pitted surface pipe outer wall and inner wall all roll the decorative pattern, the outer wall coating has super hydrophilic heat dissipation coating.
A processing technology of a stainless steel welding pitted surface pipe comprises the following steps:
s1, cleaning a steel plate, drying, and rolling two sides of the surface of the steel plate;
s2, welding the steel plate with the rolled surface into a pipe;
s3, after welding, annealing the steel pipe, and cleaning the steel pipe after the annealing is finished;
s4, preparing super-hydrophilic heat dissipation gel;
s5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Further, in step S1, when the steel plate is rolled, the rolling pattern depth is 0.5-2.5mm, and different patterns can be rolled on both sides of the steel plate.
The invention provides a processing technique of stainless steel welding pitted surface pipe, which rolls on two sides of a steel plate in advance before welding the steel plate into a pipe, avoids the problem of high requirement on equipment when grooving the inner wall of a steel pipe after welding into the pipe, reduces the cost requirement when processing the welding pitted surface pipe, and rolls on the surface of the steel plate in advance, can make the patterns of the inner wall of the steel pipe more diversified, avoids the situation that only spiral lines or point-shaped patterns exist, but can process pattern patterns with different rolling depths or shapes according to the difference of the property and the diameter of the fluid in the pipe, so that the pattern of the inner wall can generate more influence on the fluid in the pipe, for example, for the fluid with high flow speed, the pattern of the pipe can use cross lines, for the fluid with low flow speed, concave line and circular point flow field can be used, the distribution of the fluid on the wall can be changed, turbulence can be formed, and the convection effect can be improved, meanwhile, the surface area of the inner wall can be extended more, the heat exchange coefficient of the pitted surface tube is further improved, and the heat exchange effect is improved.
The invention improves the rolling procedure to the process of welding the pipe into the pipe, and aims at reducing the difficulty and the diversity of patterns when the inner wall of the pitted surface pipe is grooved and reducing the annealing times of the pitted surface pipe. The general pitted surface pipe processing technology is that a steel belt or a steel plate is firstly welded into a pipe, pipe seam annealing is carried out after the pipe is welded into the pipe, external force is applied to roll the pipe body on the premise that the welding strength of the pipe body is guaranteed, and annealing is carried out again after the rolling is finished for eliminating the stress of the pipe body. According to the process, the annealing of the pipe seam after welding can be realized during the processing of the pitted-surface pipe, and the purpose is to eliminate microcracks at the welding position and improve the connection strength of the welding point so as to avoid the pitted-surface pipe from being damaged due to the weak position of the welding point in the subsequent rolling link. In the processing technology of the stainless steel welded pitted surface pipe, the rolling procedure is carried out before welding, so that the possibility of pressure and damage to the welding position during rolling is avoided, the annealing times can be reduced, annealing is carried out after the rolling and welding processes are finished, and the time and the energy cost are saved.
Further, in step S2, the welding is either automatic arc welding or furnace welding.
Further, in step S3, the annealing is performed by high frequency induction heating, the annealing temperature is 900-.
Further, in step S4, the super-hydrophilic heat dissipation gel includes, by weight, 3 to 5 parts of super-hydrophilic nano-silica, 1.5 to 3 parts of carbon black, 0.5 to 2 parts of a silane coupling agent, 70 to 80 parts of epoxy resin, 10 to 20 parts of a curing agent, 10 to 20 parts of a diluent, and 10 to 15 parts of a toughening agent.
Further, the preparation of the hydrophilic gel comprises the following steps: the preparation of the super-hydrophilic heat dissipation gel comprises the following steps: mixing the super-hydrophilic nano-silica, the carbon black and the silane coupling agent, adding 30-40 parts of epoxy resin and all diluents, carrying out ultrasonic treatment for 10-30 minutes, then adding the rest epoxy resin, the toughening agent and the curing agent, and mechanically stirring for 20-30 minutes to obtain the super-hydrophilic heat dissipation gel.
Further, the ultrasonic treatment frequency is 25-35KHz, and the mechanical stirring speed is 150-300 rpm.
Further, the curing agent is any one of sebacic acid, adipic acid and phthalic acid.
Further, the diluent is any one of ethanol and polyhydric alcohol.
Further, the particle size of the carbon black is 5-25nm, and the particle size of the super-hydrophilic nano silicon dioxide is 50-100 nm.
According to the processing technology of the stainless steel welded pitted surface pipe, provided by the invention, on the basis of improving the processing technology of the pitted surface pipe, the surface of the pitted surface pipe is subjected to hydrophilic modification treatment, so that the outer wall of the pitted surface pipe processed by the processing technology has hydrophilicity, water drops condensed on the pitted surface pipe due to heat exchange in the air can be spread and flow away, and the heat exchange efficiency of the pitted surface pipe is prevented from being influenced due to the condensation of the water drops on the outer wall of the pipe body.
In addition, the invention further enhances the heat dissipation capability of the pitted surface pipe by adding the carbon black, the carbon black is amorphous carbon and has very large specific surface area, when the carbon black is used as a coating to be coated on the outer wall of the pitted surface pipe, the heat dissipation area can be further increased, the particle size of the carbon black used by the invention is 5-25nm, after the particle size of the carbon black enters the nano scale, the blackness of the carbon black is rapidly increased, the refractive index of the surface of the carbon black is greatly reduced, the possibility of storing heat in the carbon black is further reduced, the refractive index of the coating can be effectively reduced, the radiation depth of the coating can be increased, the emissivity can be effectively increased, the radiation heat dissipation performance of the pitted surface pipe is improved by enhancing the infrared radiation heat dissipation mode, the particle size of the ultra-hydrophilic nano silica used by the invention is 50-100nm, the structure is spherical, and the ultra-large specific surface area is also provided, the heat dissipation effect of the coating can be enhanced; when the silicon dioxide is in a nanometer scale, the color of the silicon dioxide is white, the color development effect of the carbon black is not influenced, and the reduction of the heat radiation effect caused by the self color of the carbon black when the carbon black is used as a coating is avoided; when the super-hydrophilic heat dissipation coating is prepared, the particle sizes of the carbon black and the super-hydrophilic nano silicon dioxide are limited, wherein the particle size of the carbon black is small, and the particle size of the super-hydrophilic nano silicon dioxide is large, so that the carbon black particles can be filled in pores between the super-hydrophilic nano silicon dioxide, and the dispersion uniformity between the super-hydrophilic nano silicon dioxide and the super-hydrophilic nano silicon dioxide is enhanced.
Furthermore, the epoxy resin is used as a matrix when the super-hydrophilic heat dissipation coating is prepared, the epoxy resin is used as a thermosetting substance, the super-hydrophilic heat dissipation coating has good mechanical property at high temperature, the silane coupling agent is also used as a modifier in the super-hydrophilic heat dissipation coating prepared by the invention, silanol contained in the super-hydrophilic heat dissipation coating can generate chelation with atoms on the surface of metal, the dispersion performance of carbon black and super-hydrophilic nano silicon dioxide is enhanced, the binding capacity of the super-hydrophilic heat dissipation coating and the stainless steel surface of a hemp-faced pipe is enhanced, and the coating adhesion is enhanced.
The coating attached to the stainless steel substrate can generate internal stress due to different thermal expansion coefficients and continuous crosslinking reaction in the using process, particularly when the working temperature is close to Tg of the coating, the internal stress of the coating can be increased sharply due to the fact that the movement of molecular chains in resin is hindered by the influence of carbon black and super-hydrophilic nano-silica doped in the resin, and when the stress exceeds the cohesive force of the coating, the coating can be peeled off.
In order to enhance the working performance and the service life of the super-hydrophilic heat-dissipation coating, the carboxyl nitrile rubber is added during the preparation of the coating, is a yellow powdery substance, is mutually soluble with the epoxy resin at normal temperature, can be completely dissolved in the epoxy resin only by physical stirring, can enable a brittle epoxy resin material to have good ductility, forms a sea-island structure on a microstructure, and enables the cured coating to still have good cohesive force to resist stress damage caused by the temperature change of a working environment. The carbon black added in the invention can also modify the carboxyl nitrile rubber, further improve the high temperature resistance and the wear resistance of the carboxyl nitrile rubber, and enable the stainless steel welded pitted surface pipe processed by the invention to have more excellent working performance.
In addition, the curing agent of the epoxy resin is sebacic acid, adipic acid and phthalic acid, the diluent is ethanol and polyols, the two substances can be subjected to slow esterification reaction, the dissolving capacity of the generated lipid substance is similar to that of rubber molecules, and the lipid substance generated by the curing agent and the diluent can be fused into the rubber molecules to be used as a lubricant under the microscale, so that the distance between the rubber molecules is increased, the relative displacement capacity of the rubber molecules at low temperature is enhanced, the low-temperature performance of the hydroxy nitrile rubber is further improved, and certain plasticity and internal stress can be still maintained at low temperature.
Compared with the prior art, the invention has the following beneficial effects: the invention has simple processing technology, only carries out one-step annealing process during processing, saves energy cost, can process complex patterns on the inner wall of the steel pipe, further increases the heat exchange area, can enhance the influence on internal fluid, and improves the heat exchange efficiency.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
S1, using a steel belt with the thickness of 7mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, wherein the knurling tool is in a cross shape, rolling the upper surface of the steel belt, and rolling patterns with the depth of 1mm, and then installing the knurling tool on the surface of the clamping jaw, wherein the knurling tool is in a diamond shape, and rolling the lower surface of the steel belt, and the rolling patterns with the depth of 1 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silicon dioxide, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction container, adding 20g of epoxy resin and 15g of ethanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, then adding 60g of epoxy resin, 15g of carboxyl nitrile rubber and 10g of sebacic acid into the reaction container, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Example 2
S1, using a steel belt with the thickness of 6mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, wherein the knurling tool is in a cross shape, rolling the upper surface of the steel belt, the rolling pattern depth is 1.5mm, installing the knurling tool on the surface of the clamping jaw, the knurling tool is in a circular convex point shape, rolling the lower surface of the steel belt, and the rolling pattern depth is 1.5 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silicon dioxide, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction container, adding 20g of epoxy resin and 15g of propanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 15g of carboxyl nitrile rubber and 10g of sebacic acid into the reaction container, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Example 3
S1, using a steel belt with the thickness of 10mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, wherein the knurling tool is in a cross shape, rolling the upper side surface and the lower side surface of the knurling tool, and rolling patterns with the depth of 1 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 3 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silica, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction vessel, adding 20g of epoxy resin and 10g of butanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 20g of carboxyl nitrile rubber and 10g of phthalic acid into the reaction vessel, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Example 4
S1, using a steel belt with the thickness of 10mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, rolling the upper surface and the lower surface of the steel belt, wherein the knurling tool is in a cross shape, the depth of a knurling pattern on the outer wall surface is 1.5mm, and the depth of the inner wall surface is 1.2 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using furnace welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 3 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 4g of super-hydrophilic silica, 2g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction vessel, adding 20g of epoxy resin and 10g of butanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, then adding 70g of epoxy resin, 18g of carboxyl nitrile rubber and 10g of phthalic acid into the reaction vessel, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Example 5
S1, using a steel belt with the thickness of 15mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, rolling the upper surface and the lower surface of the steel belt, wherein the knurling tool is in a cross shape, the knurling pattern depth on the outer wall surface is 2mm, and the knurling pattern depth on the inner wall surface is 1.5 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silica, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction vessel, adding 20g of epoxy resin and 20g of ethanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 20g of carboxyl nitrile rubber and 10g of adipic acid into the reaction vessel, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Example 6
S1, using a steel belt with the thickness of 15mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, rolling the upper surface and the lower surface of the steel belt, wherein the knurling tool is in a cross shape, the knurling pattern depth on the outer wall surface is 2mm, and the knurling pattern depth on the inner wall surface is 1.5 mm. .
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silica, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction container, adding 20g of epoxy resin and 20g of propanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 15g of carboxyl nitrile rubber and 10g of phthalic acid into the reaction container, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 1
S1, using a steel belt with the thickness of 7mm as a pipe body material, bending the steel belt into a pipe shape, and welding the pipe into a pipe by using automatic arc welding;
s2, annealing the steel pipe for the first time to eliminate deformation bending stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1000 ℃, the annealing time is 1 minute, and after the annealing is finished, welding beads generated in the welding process are removed to ensure that the pipe body is smooth;
s3, placing the annealed workpiece on a processing platform, installing a knurling tool on the surface of a clamping jaw, rolling the outer wall of the knurling tool in a cross shape, rolling the knurling tool with the knurling pattern depth of 1mm, and preparing the spiral pattern in the knurling tool with the knurling pattern depth of 1 mm;
and S4, carrying out secondary annealing on the steel pipe to eliminate rolling stress, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes.
S5, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silicon dioxide, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction container, adding 20g of epoxy resin and 15g of ethanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, then adding 60g of epoxy resin, 15g of carboxyl nitrile rubber and 10g of sebacic acid into the reaction container, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S6, spraying the super-hydrophilic heat dissipation gel prepared in the step S5 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 2
S1, using a steel belt with the thickness of 6mm as a pipe body material, bending the steel belt into a pipe shape, and welding the pipe into a pipe by using automatic arc welding;
s2, annealing the steel pipe for the first time to eliminate deformation bending stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1000 ℃, the annealing time is 1 minute, and after the annealing is finished, welding beads generated in the welding process are removed to ensure that the pipe body is smooth;
s3, placing the annealed workpiece on a processing platform, installing a knurling tool on the surface of a clamping jaw, rolling the outer wall of the jaw in a cross shape, rolling patterns with the depth of 1.5mm, and preparing spiral patterns in the jaw, wherein the pattern depth is 1 mm;
and S4, carrying out secondary annealing on the steel pipe to eliminate rolling stress, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes.
S5, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silicon dioxide, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction container, adding 20g of epoxy resin and 15g of butanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 15g of carboxyl nitrile rubber and 10g of sebacic acid into the reaction container, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S6, spraying the super-hydrophilic heat dissipation gel prepared in the step S5 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 3
S1, using a steel belt with the thickness of 10mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, wherein the knurling tool is in a cross shape, rolling the upper side surface and the lower side surface of the knurling tool, and rolling patterns with the depth of 1 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 3 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
and S4, cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 4
S1, using a steel belt with the thickness of 10mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, rolling the upper surface and the lower surface of the steel belt, wherein the knurling pattern on the outer wall surface is 1.5mm deep, and the knurling pattern on the inner wall surface is 1.2mm deep.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using furnace welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 3 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
and S4, cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 5
S1, using a steel belt with the thickness of 15mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, rolling the upper surface and the lower surface of the steel belt, wherein the knurling tool is in a cross shape, the knurling pattern depth on the outer wall surface is 5mm, and the knurling pattern depth on the inner wall surface is 4 mm.
S2, bending the rolled steel strip into a tubular shape, and welding the steel strip into a tube by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silica, 3g of carbon black and 1g of commercially available silane coupling agent KH-550 in a reaction vessel, adding 20g of epoxy resin and 20g of toluene, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 20g of carboxyl nitrile rubber and 10g of succinic acid into the reaction vessel, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Comparative example 6
S1, using a steel belt with the thickness of 15mm as a pipe body material, cleaning the surface of the steel belt before processing the steel belt, removing impurities attached to the surface of the steel belt, placing the steel belt on a processing platform after the surface is dried, installing a knurling tool on the surface of a clamping jaw, wherein the knurling tool is in a cross shape, and rolling the upper surface and the lower surface of the knurling tool. The depth of the outer wall surface is 4mm, and the depth of the inner wall surface is 4 mm.
S2, bending the grooved steel strip into a tubular shape, and welding the steel strip into a pipe by using automatic arc welding.
S3, after welding is finished, annealing the steel pipe to eliminate rolling stress and weld joint microcracks, wherein high-frequency induction heating is used for annealing, the annealing temperature is 1050 ℃, and the annealing time is 2 minutes; after the annealing is finished, removing welding beads generated in the welding process, and ensuring the smoothness of the pipe body;
s4, preparing super-hydrophilic heat dissipation gel: heating 5g of super-hydrophilic silica and 1g of commercially available silane coupling agent KH-550 in a reaction vessel, adding 20g of epoxy resin and 20g of ethanol, dispersing for 10 minutes by using 25KHz ultrasonic waves, adding 70g of epoxy resin, 20g of carboxyl nitrile rubber and 10g of succinic acid into the reaction vessel, and stirring for 20 minutes at the speed of 200rpm to obtain the super-hydrophilic heat dissipation gel.
S5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a super-hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
Thereafter, water having a temperature of 75 ℃ and 5 ℃ was respectively used to flow in the pitted pipe prepared in examples 1 to 6 and comparative examples 1 to 6 in an environment of 20 ℃ at room temperature using a circulation pump, and after 30 minutes of the flow, the temperature of the water flow was measured to characterize the heat exchange capacity thereof, and the results are shown in the following table.
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Initial temperature (. degree. C.) | 75 | 75 | 75 | 75 | 75 | 75 |
| End temperature (. degree.C.) | 34 | 32 | 35 | 33 | 42 | 36 |
| Initial temperature (. degree. C.) | 5 | 5 | 5 | 5 | 5 | 5 |
| End temperature (. degree.C.) | 16 | 18 | 15 | 15 | 14 | 16 |
| Item | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 |
| Initial temperature (. degree. C.) | 75 | 75 | 75 | 75 | 75 | 75 |
| End temperature (. degree.C.) | 40 | 39 | 40 | 39 | 39 | 40 |
| Initial temperature (. degree. C.) | 5 | 5 | 5 | 5 | 5 | 5 |
| End temperature (. degree.C.) | 15 | 14 | 13 | 13 | 15 | 14 |
Through the comparison of the experimental results of the examples 1-2 and the comparative examples 1-2, the pitted tube prepared by the processing technology provided by the invention can be processed with complex patterns on the inner wall of the tube body, so that the heat exchange area of the pitted tube is increased, the heat exchange rate is improved, and the heat exchange of fluid in the tube can be assisted at a faster rate during heat exchange.
Through the comparison between the examples 3 and 4 and the comparative examples 3 and 4, the heat exchange rate of the pitted tube at a low temperature is obviously improved after the super-hydrophilic heat dissipation coating is coated, the super-hydrophilic heat dissipation coating can be formed by quickly flattening water drops condensed on the surface of the pitted tube in the air and flowing away, and the water drops are prevented from staying on the surface of the pitted tube to influence the heat exchange performance of the pitted tube during heat exchange.
It is found by comparing example 5 with comparative example 5 that the heat exchange performance is also affected by the deep rolling depth, and when the deep rolling depth is large, the surface area is increased, so that the heat exchange rate is enhanced, but the deep rolling depth is not too large, so that the strength of the tube body is not affected.
It is found from the comparison between example 6 and comparative example 6 that the heat exchange efficiency of the pitted pipe is greatly affected after the carbon black is added, and the heat exchange rate of the pitted pipe is enhanced after the carbon black is added.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The stainless steel welded pitted surface pipe is characterized in that: the stainless steel welded pitted surface pipe is a cylindrical pipe body and is formed by welding steel plates end to end; the outer wall and the inner wall of the stainless steel welding pitted surface pipe are both provided with rolled patterns, and the outer wall is coated with a super-hydrophilic heat dissipation coating.
2. The processing technology of the stainless steel welding pitted surface pipe is characterized by comprising the following steps of:
s1, cleaning a steel plate, drying, and rolling two sides of the surface of the steel plate;
s2, welding the steel plate with the rolled surface into a pipe;
s3, after welding, annealing the steel pipe, and cleaning the steel pipe after the annealing is finished;
s4, preparing super-hydrophilic heat dissipation gel;
s5, spraying the super-hydrophilic heat dissipation gel prepared in the step S4 on the outer wall of the cleaned steel pipe to prepare a hydrophilic heat dissipation coating, drying the coating, and cutting the steel pipe to obtain the stainless steel welded pitted surface pipe.
3. The processing technology of the stainless steel welded pitted tube as claimed in claim 2, characterized in that: in step S1, when the steel plate is rolled, the rolling pattern depth is 0.5-2.5mm, and different patterns can be rolled on both sides of the steel plate.
4. The processing technology of the stainless steel welded pitted tube as claimed in claim 2, characterized in that: in step S2, the welding is either automatic arc welding or furnace welding.
5. The processing technology of the stainless steel welded pitted tube as claimed in claim 2, characterized in that: in step S3, the annealing is performed by high frequency induction heating at 900-1100 deg.C for 1-3 min.
6. The processing technology of the stainless steel welded pitted tube as claimed in claim 2, characterized in that: in the step S4, the super-hydrophilic heat dissipation gel comprises, by weight, 3-5 parts of super-hydrophilic nano-silica, 1.5-3 parts of carbon black, 10-15 parts of a toughening agent, 0.5-2 parts of a silane coupling agent, 70-80 parts of epoxy resin, 10-20 parts of a curing agent, and 10-20 parts of a diluent.
7. The processing technology of the stainless steel welded pitted tube as claimed in claim 2, characterized in that: in step S4, the preparation method of the super-hydrophilic heat-dissipating gel includes the following steps: mixing the super-hydrophilic nano-silica, the carbon black and the silane coupling agent, adding 30-40 parts of epoxy resin and all diluents, carrying out ultrasonic treatment for 10-30 minutes, then adding the rest epoxy resin, the toughening agent and the curing agent, and mechanically stirring for 20-30 minutes to obtain the super-hydrophilic heat dissipation gel.
8. The processing technology of the stainless steel welded pitted tube as claimed in claim 7, wherein the processing technology comprises the following steps: the ultrasonic treatment frequency is 25-35KHz, and the mechanical stirring speed is 150-300 rpm.
9. The processing technology of the stainless steel welded pitted tube as claimed in claim 6, wherein the processing technology comprises the following steps: the particle size of the carbon black is 5-25nm, and the particle size of the super-hydrophilic nano silicon dioxide is 50-100 nm.
10. The processing technology of the stainless steel welded pitted tube as claimed in claim 6, wherein the processing technology comprises the following steps: the curing agent is any one of sebacic acid, adipic acid and isophthalic acid; the diluent is any one of ethanol and polyhydric alcohol; the toughening agent is carboxyl nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514688.1A CN114152136A (en) | 2021-12-13 | 2021-12-13 | Stainless steel welded pitted surface pipe and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514688.1A CN114152136A (en) | 2021-12-13 | 2021-12-13 | Stainless steel welded pitted surface pipe and processing technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114152136A true CN114152136A (en) | 2022-03-08 |
Family
ID=80450991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111514688.1A Pending CN114152136A (en) | 2021-12-13 | 2021-12-13 | Stainless steel welded pitted surface pipe and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152136A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148686A (en) * | 1995-07-12 | 1997-04-30 | 三洋电机株式会社 | Heat exchanger of refrigerating circulation |
| JPH1123101A (en) * | 1997-05-02 | 1999-01-26 | Daikin Ind Ltd | Absorption refrigeration unit |
| CN1570537A (en) * | 2004-04-23 | 2005-01-26 | 中炬高新技术实业（集团）股份有限公司 | Welded steel pipes with ribs and method of manufacture |
| CN1779405A (en) * | 2004-11-17 | 2006-05-31 | 淳安千岛湖康盛制冷管路研究开发有限公司 | Steel heat-exchanger pipe with internal and external threads |
| WO2008037145A1 (en) * | 2006-09-26 | 2008-04-03 | Yongli Li | A manufacture method of high precision seamless steel pipes |
| US20100224595A1 (en) * | 2006-03-29 | 2010-09-09 | Dong-A Flexible Metal Tubes Co., Ltd | Welding apparatus of stainless steel pipe and welding method of the same |
| CN202660939U (en) * | 2012-03-06 | 2013-01-09 | 西安工程大学 | Tube type indirect evaporative cooler with heat exchange tubes coated with hydrophilic fiber paper externally |
| CN107418442A (en) * | 2017-06-13 | 2017-12-01 | 乾帛新材料科技（上海）有限公司 | A kind of new hydrophilic glass self-cleaning coating and preparation method thereof |
| CN207019518U (en) * | 2017-07-10 | 2018-02-16 | 广州华钻电子科技有限公司 | A kind of heat pipe of the coating containing hydrophilic |
| CN208901951U (en) * | 2019-02-28 | 2019-05-24 | 上海宇洋特种金属材料有限公司 | Weld surface voids tube |
-
2021
- 2021-12-13 CN CN202111514688.1A patent/CN114152136A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148686A (en) * | 1995-07-12 | 1997-04-30 | 三洋电机株式会社 | Heat exchanger of refrigerating circulation |
| JPH1123101A (en) * | 1997-05-02 | 1999-01-26 | Daikin Ind Ltd | Absorption refrigeration unit |
| CN1570537A (en) * | 2004-04-23 | 2005-01-26 | 中炬高新技术实业（集团）股份有限公司 | Welded steel pipes with ribs and method of manufacture |
| CN1779405A (en) * | 2004-11-17 | 2006-05-31 | 淳安千岛湖康盛制冷管路研究开发有限公司 | Steel heat-exchanger pipe with internal and external threads |
| US20100224595A1 (en) * | 2006-03-29 | 2010-09-09 | Dong-A Flexible Metal Tubes Co., Ltd | Welding apparatus of stainless steel pipe and welding method of the same |
| WO2008037145A1 (en) * | 2006-09-26 | 2008-04-03 | Yongli Li | A manufacture method of high precision seamless steel pipes |
| CN202660939U (en) * | 2012-03-06 | 2013-01-09 | 西安工程大学 | Tube type indirect evaporative cooler with heat exchange tubes coated with hydrophilic fiber paper externally |
| CN107418442A (en) * | 2017-06-13 | 2017-12-01 | 乾帛新材料科技（上海）有限公司 | A kind of new hydrophilic glass self-cleaning coating and preparation method thereof |
| CN207019518U (en) * | 2017-07-10 | 2018-02-16 | 广州华钻电子科技有限公司 | A kind of heat pipe of the coating containing hydrophilic |
| CN208901951U (en) * | 2019-02-28 | 2019-05-24 | 上海宇洋特种金属材料有限公司 | Weld surface voids tube |
Non-Patent Citations (1)
| Title |
|---|
| 杨九闻 等: "《日用工业品商品学 参考资料》", 中央广播电视大学出版社, pages: 111 - 113 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111451315B (en) | Processing technology of U-shaped seamless stainless steel pipe and stainless steel pipe | |
| CN114152136A (en) | Stainless steel welded pitted surface pipe and processing technology thereof | |
| CN104148787A (en) | Flow forming technology for machining seal head | |
| CN108929994A (en) | A kind of large hydraulic press, molding machine special-purpose hydraulic cylinder and preparation method thereof | |
| CN112680585B (en) | Method for straightening heat treatment deformation of continuous oil pipe | |
| CN101168224A (en) | Method for heating and forming cold-formed steel and cold-formed steel produced by same | |
| CN1057482C (en) | Residual stress eliminating method for welding seam in welded thin-wall pipe | |
| CN111892873A (en) | High-binding-force super-hydrophobic coating and preparation method thereof | |
| CN104209719A (en) | Preparation method of titanium alloy steel pipe of heat exchanger | |
| CN103822053A (en) | Corrosion resistance handling method for aluminum alloy workpieces with pipes | |
| CN110576292B (en) | Method for manufacturing automobile bumper | |
| CN111618529B (en) | Manufacturing method of CuNi90/10 alloy socket welding flange | |
| CN110819931B (en) | Powder-cored welding wire, preparation method and application thereof, porous coating and preparation method thereof | |
| CN101195134A (en) | Method for the production of heat-exchange tubes | |
| CN114273859B (en) | Manufacturing method of welding-free integrally-formed air conditioner branch pipe | |
| CN113108642A (en) | Bimetal composite radiator capable of reducing friction abnormal sound and preparation method thereof | |
| CN109500131B (en) | Manufacturing method of seamless steel tube for gas cylinder of long tube trailer | |
| CN110486573B (en) | Method for constructing surface anticorrosion structure of steel special-shaped pipe fitting | |
| CA2838903A1 (en) | Method for bending thermoplastic pipes | |
| CN105097382A (en) | Production technology of glass lamp tube | |
| CN108195218B (en) | A kind of external curve finned tube and its manufacturing method | |
| JP3734335B2 (en) | Surface treatment fin material for heat exchanger and manufacturing method thereof | |
| CN113699350B (en) | Heat treatment process for stainless steel composite steel butt-welded pipe fitting | |
| CN104815887A (en) | Elbow pushing device and process method | |
| CN213377421U (en) | Cooling device for large-diameter anti-corrosion pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |