CN116765165A - Manufacturing method of aluminum-based composite pipe - Google Patents
Manufacturing method of aluminum-based composite pipe Download PDFInfo
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- CN116765165A CN116765165A CN202210227167.6A CN202210227167A CN116765165A CN 116765165 A CN116765165 A CN 116765165A CN 202210227167 A CN202210227167 A CN 202210227167A CN 116765165 A CN116765165 A CN 116765165A
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- 239000002131 composite material Substances 0.000 title claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000005260 corrosion Methods 0.000 claims abstract description 39
- 230000007797 corrosion Effects 0.000 claims abstract description 39
- 238000005096 rolling process Methods 0.000 claims abstract description 37
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 25
- 239000003607 modifier Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 230000001680 brushing effect Effects 0.000 claims abstract description 7
- 238000009749 continuous casting Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000009785 tube rolling Methods 0.000 claims abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 40
- 238000002360 preparation method Methods 0.000 claims description 37
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 24
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 24
- 150000003109 potassium Chemical class 0.000 claims description 24
- 229910000077 silane Inorganic materials 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 19
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 14
- -1 rare earth cerium chloride Chemical class 0.000 claims description 13
- 238000009210 therapy by ultrasound Methods 0.000 claims description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- 239000011591 potassium Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- KDEPHUOMBPVSRY-AHUNZLEGSA-H (Z)-but-2-enedioate lanthanum(3+) Chemical compound [La+3].[La+3].[O-]C(=O)\C=C/C([O-])=O.[O-]C(=O)\C=C/C([O-])=O.[O-]C(=O)\C=C/C([O-])=O KDEPHUOMBPVSRY-AHUNZLEGSA-H 0.000 claims description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 8
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 8
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000000661 sodium alginate Substances 0.000 claims description 7
- 235000010413 sodium alginate Nutrition 0.000 claims description 7
- 229940005550 sodium alginate Drugs 0.000 claims description 7
- 229910001631 strontium chloride Inorganic materials 0.000 claims description 7
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 claims description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 239000007970 homogeneous dispersion Substances 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 238000005219 brazing Methods 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 239000002041 carbon nanotube Substances 0.000 description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 238000009472 formulation Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AOPCKOPZYFFEDA-UHFFFAOYSA-N nickel(2+);dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O AOPCKOPZYFFEDA-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910017770 Cu—Ag Inorganic materials 0.000 description 1
- 229910018594 Si-Cu Inorganic materials 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229910008465 Si—Cu Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Lubricants (AREA)
Abstract
The invention discloses a manufacturing method of an aluminum-based composite pipe, which comprises the following steps: step one: adding a homogeneous phase modifier accounting for 1-5% of the total amount of the liquid aluminum alloy into the 7-series or 4-series liquid aluminum alloy at 660-720 ℃, stirring, casting to form an ingot, and adding 0.5-1.0% of complex phase modifier in casting; step two: feeding the cast ingot into an extruder for extrusion to form an aluminum pipe, controlling an extrusion outlet, and compounding the outer surface of the aluminum pipe with a planetary rolling mill continuous casting and rolling method to compound 3-series aluminum alloy to prepare a base pipe; step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank; step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished. The aluminum-based composite pipe produced by the invention can realize the functional combination of various materials by changing the chemical components of interlayer metal, and has the characteristics of corrosion resistance, self-contained brazing filler metal, heat transfer enhancement and the like.
Description
Technical Field
The invention relates to the technical field of aluminum-based composite pipes, in particular to a manufacturing method of an aluminum-based composite pipe.
Background
The aluminum alloy has low density and excellent mechanical processing performance, and is widely applied in the fields of aviation, aerospace, automobile, electronic industry and the like. However, with the rapid development of the modern industry, aluminum alloy materials have failed in many ways to meet the needs of industry development for their properties. Aluminum and other materials are compounded to prepare an aluminum-based composite material, so that the aluminum-based composite material is one of the most important ways for improving the comprehensive mechanical properties of the aluminum alloy material.
In the prior aluminum-based composite tube, in order to enhance the heat transfer and conduction capability, a carbon nano tube material is added, but the corrosion resistance of a product is reduced, as disclosed in Chinese patent document CN103276322A, an in-situ grown carbon nano tube reinforced aluminum-based brazing filler metal is prepared from nickel nitrate hexahydrate and aluminum-based composite powder, wherein the mass percent of the nickel nitrate hexahydrate and the aluminum-based composite powder is 2-10%, the aluminum-based composite powder is aluminum-based brazing filler metal powder of an Al-Si system, an Al-Si-Cu system or an Al-Cu-Ag system, and the purity is more than 99%;
as another example, CN106119587a discloses a method for preparing an aluminum-based composite material with effectively added carbon nanotubes, which comprises the following steps: 1) Preparing carbon nano tube aluminum-based composite powder: putting the carbon nano tube, aluminum powder and foaming agent into a high-energy ball mill according to a certain proportion, uniformly mixing, and cooling to obtain composite powder; 2) Preparing a carbon nano tube aluminum-based composite ingot: placing the composite powder prepared in the step 1) into a vacuum hot pressing furnace for sintering densification to prepare a composite billet; 3) Smelting: after the pure aluminum ingot is melted, adding the composite billet prepared in the step 2) at a certain temperature, stirring, preserving heat and casting to prepare the carbon nano tube aluminum-based composite material; the heat-conducting property of the product is enhanced by adding the carbon nano tube, but the corrosion resistance is reduced, so that the two properties are required to be optimized and coordinated;
based on the method, the invention provides a manufacturing method of an aluminum-based composite pipe through improvement of the process and the raw materials.
Disclosure of Invention
The present invention is directed to a method for manufacturing aluminum-based composite pipe, which solves the problems set forth in the prior art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a manufacturing method of an aluminum-based composite pipe, which comprises the following steps:
step one: adding a homogeneous phase modifier accounting for 1-5% of the total amount of the liquid aluminum alloy into the 7-series or 4-series liquid aluminum alloy at 660-720 ℃, stirring, casting to form an ingot, and adding 0.5-1.0% of complex phase modifier in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling the extrusion outlet, controlling the surface temperature to be 480-550 ℃, and the extrusion speed to be 1-5m/min, wherein the outer surface of the aluminum pipe is compounded with 3-series aluminum alloy by adopting a planetary rolling mill continuous casting and rolling method to prepare a base pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
Preferably, the rotation speed of the stirring treatment in the first step is 500-700r/min, and the stirring time is 35-45min.
Preferably, the preparation method of the homogeneous phase compounding agent comprises the following steps:
s1: placing the potassium hexatitanate whisker into a reactor at 100-120 ℃ for thermal reaction for 25-35min, then raising the temperature to 185-195 ℃ at the speed of 1-3 ℃/s, preserving the temperature for 5-10min, and then air-cooling to room temperature to obtain the thermally modified potassium hexatitanate whisker;
s2: the heat modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 75-85 ℃, the stirring rotating speed is 300-400r/min, the stirring time is 25-35min, and the uniform dispersion modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 55-65 ℃, the stirring rotation speed is 600-700r/min, the stirring time is 45-55min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
Preferably, the preparation method of the homodisperse solution comprises the following steps: mixing 10-20 parts of hydrochloric acid solution, 1-5 parts of sodium alginate, 1-2 parts of strontium chloride and 15-25 parts of N, N-dimethylformamide, and stirring thoroughly to obtain a uniform dispersion.
Preferably, the mass fraction of the hydrochloric acid solution is 5-7%.
Preferably, the preparation method of the corrosion-resistant silane liquid comprises the following steps: adding 5-10 parts of hexamethylene diisocyanate into 10-20 parts of acetone solvent, stirring for 10-20min at the stirring speed of 100-200r/min, then adding 1-3 parts of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 1-2 parts of rare earth cerium chloride, continuously stirring for 10-20min at the speed of 350-450r/min, and obtaining the corrosion-resistant silane liquid after stirring.
Preferably, the rare earth lanthanum chloride is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
Preferably, the preparation method of the complex phase modified material comprises the following steps:
adding 5-10 parts of chromium oxide into 10-20 parts of ethanol solvent, then adding 1-2 parts of lanthanum maleate and 0.1-0.3 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
Preferably, the ultrasonic power of the ultrasonic treatment is 500-700W, and the ultrasonic time is 25-35min.
Preferably, the reduction of area is 50-90% during rolling in the step four, the rolling speed is 8-12 m/min, and the temperature rise of the deformation zone is 300-500 ℃.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a tubular product tissue after composite rolling of an aluminum-based composite tube manufacturing method is in a recrystallization state, and the combination of layers is metallurgical combination, so that the aluminum-based composite tubular product can be produced with less working procedures, high efficiency and low cost, and the produced aluminum-based composite tube can realize the functional combination of various materials by changing the chemical composition of interlayer metal, and has the characteristics of corrosion resistance, self-carrying brazing filler metal, enhanced heat transfer function and the like;
the homogeneous phase modifier is added into the liquid aluminum alloy, and simultaneously, the complex phase modifier is added into the casting, so that the heat conduction and the corrosion resistance of the product are enhanced by the combination of the homogeneous phase modifier and the complex phase modifier; the homogeneous phase preparation agent adopts potassium hexatitanate whisker to be subjected to heat improvement treatment firstly, then the whisker is subjected to improvement by a uniform dispersion liquid and a corrosion resistant silane liquid, the whisker activity degree after the heat improvement treatment is high, and after the hydrochloric acid solution, sodium alginate, strontium chloride and N, N-dimethylformamide in the uniform dispersion liquid are treated, the dispersity is enhanced, so that the corrosion resistance performance of the whisker in a product is improved after the corrosion resistant silane liquid is modified by the improvement of N-2-aminoethyl-3-aminopropyl trimethoxysilane and rare earth cerium chloride;
the complex phase modified material adopts chromium oxide as a base material, an oxide film can be formed by a base material, the addition of nano silicon dioxide can enhance the compactness effect of the oxide film, and meanwhile, lanthanum maleate is matched to further enhance the corrosion resistance of the product; the product is improved in raw materials and optimized in process, and the corrosion resistance and heat conduction performance of the obtained product can be improved in a coordinated manner.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The manufacturing method of the aluminum-based composite pipe of the embodiment comprises the following steps:
step one: adding a homogeneous phase modifier accounting for 1-5% of the total amount of the liquid aluminum alloy into the 7-series or 4-series liquid aluminum alloy at 660-720 ℃, stirring, casting to form an ingot, and adding 0.5-1.0% of complex phase modifier in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling the extrusion outlet, controlling the surface temperature to be 480-550 ℃, and the extrusion speed to be 1-5m/min, wherein the outer surface of the aluminum pipe is compounded with 3-series aluminum alloy by adopting a planetary rolling mill continuous casting and rolling method to prepare a base pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
In the first step of the embodiment, the stirring treatment is carried out at a rotating speed of 500-700r/min and a stirring time of 35-45min.
The preparation method of the homogeneous phase formulation of the embodiment comprises the following steps:
s1: placing the potassium hexatitanate whisker into a reactor at 100-120 ℃ for thermal reaction for 25-35min, then raising the temperature to 185-195 ℃ at the speed of 1-3 ℃/s, preserving the temperature for 5-10min, and then air-cooling to room temperature to obtain the thermally modified potassium hexatitanate whisker;
s2: the heat modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 75-85 ℃, the stirring rotating speed is 300-400r/min, the stirring time is 25-35min, and the uniform dispersion modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 55-65 ℃, the stirring rotation speed is 600-700r/min, the stirring time is 45-55min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
The preparation method of the samming liquid in the embodiment comprises the following steps: mixing 10-20 parts of hydrochloric acid solution, 1-5 parts of sodium alginate, 1-2 parts of strontium chloride and 15-25 parts of N, N-dimethylformamide, and stirring thoroughly to obtain a uniform dispersion.
The mass fraction of the hydrochloric acid solution of this example is 5-7%.
The preparation method of the corrosion resistant silane liquid comprises the following steps: adding 5-10 parts of hexamethylene diisocyanate into 10-20 parts of acetone solvent, stirring for 10-20min at the stirring speed of 100-200r/min, then adding 1-3 parts of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 1-2 parts of rare earth cerium chloride, continuously stirring for 10-20min at the speed of 350-450r/min, and obtaining the corrosion-resistant silane liquid after stirring.
The rare earth lanthanum chloride of the embodiment is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
The preparation method of the complex phase modified material of the embodiment comprises the following steps:
adding 5-10 parts of chromium oxide into 10-20 parts of ethanol solvent, then adding 1-2 parts of lanthanum maleate and 0.1-0.3 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
The ultrasonic power of the ultrasonic treatment of the embodiment is 500-700W, and the ultrasonic time is 25-35min.
In the fourth step of the embodiment, the reduction of area is 50-90%, the rolling speed is 8-12 m/min, and the temperature rise of the deformation zone is 300-500 ℃.
Example 1.
The manufacturing method of the aluminum-based composite pipe of the embodiment comprises the following steps:
step one: adding a homogeneous phase modifier accounting for 1% of the total amount of the liquid aluminum alloy into the liquid aluminum alloy of the 7 series or the 4 series at 660 ℃, stirring, casting to form an ingot, and adding 0.5% of complex phase modifier in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling an extrusion outlet, controlling the surface temperature to 480 ℃, and the extrusion speed to be 1m/min, wherein the outer surface of the aluminum pipe is compounded with 3-series aluminum alloy by adopting a planetary rolling mill continuous casting and rolling method to prepare a base pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
In the first step of this embodiment, the stirring treatment was carried out at a rotation speed of 500r/min for 35min.
The preparation method of the homogeneous phase formulation of the embodiment comprises the following steps:
s1: the potassium hexatitanate whisker is placed at 100 ℃ to carry out thermal reaction for 25min, then the temperature is raised to 185 ℃ at the speed of 1 ℃/s, the heat is preserved for 5min, and then the air cooling is carried out to the room temperature, so as to obtain the thermally modified potassium hexatitanate whisker;
s2: the thermally modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 75 ℃, the stirring rotating speed is 300r/min, the stirring time is 25min, and the uniformly dispersed modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 55 ℃, the stirring rotating speed is 600r/min, the stirring time is 45min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
The preparation method of the samming liquid in the embodiment comprises the following steps: 10 parts of hydrochloric acid solution, 1 part of sodium alginate, 1 part of strontium chloride and 1 part of N, N-dimethylformamide are stirred and fully mixed to obtain a uniform dispersion.
The mass fraction of the hydrochloric acid solution of this example was 5%.
The preparation method of the corrosion resistant silane liquid comprises the following steps: adding 5 parts of hexamethylene diisocyanate into 10 parts of acetone solvent, stirring for 10min at the stirring speed of 100r/min, then adding 1 part of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 1 part of rare earth cerium chloride, continuously stirring at the stirring speed of 350r/min for 10min, and obtaining the corrosion-resistant silane liquid after the stirring is finished.
The rare earth lanthanum chloride of the embodiment is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
The preparation method of the complex phase modified material of the embodiment comprises the following steps:
adding 5 parts of chromium oxide into 10 parts of ethanol solvent, then adding 1 part of lanthanum maleate and 0.1 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
The ultrasonic power of the ultrasonic treatment of this example was 500W and the ultrasonic time was 25min.
In the fourth step of the embodiment, the reduction of area is 50%, the rolling speed is 8-12 m/min, and the temperature rise of the deformation zone is 300 ℃.
Example 2.
The manufacturing method of the aluminum-based composite pipe of the embodiment comprises the following steps:
step one: adding a homogeneous phase modifier accounting for 5% of the total amount of the liquid aluminum alloy into the liquid aluminum alloy of the 7 series or the 4 series at 720 ℃, stirring, casting to form an ingot, and adding a complex phase modifier accounting for 1.0% in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling an extrusion outlet, controlling the surface temperature to be 550 ℃, and the extrusion speed to be 5m/min, wherein the outer surface of the aluminum pipe is compounded with 3-series aluminum alloy by adopting a planetary rolling mill continuous casting and rolling method to prepare a base pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
In the first step of this embodiment, the stirring treatment was carried out at a rotation speed of 700r/min for 45min.
The preparation method of the homogeneous phase formulation of the embodiment comprises the following steps:
s1: the potassium hexatitanate whisker is placed at 120 ℃ to carry out thermal reaction for 35min, then the temperature is raised to 195 ℃ at the speed of 3 ℃/s, the heat is preserved for 10min, and then the air cooling is carried out to the room temperature, thus obtaining the thermally modified potassium hexatitanate whisker;
s2: the thermally modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 85 ℃, the stirring rotating speed is 400r/min, the stirring time is 35min, and the uniformly dispersed modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 65 ℃, the stirring rotating speed is 700r/min, the stirring time is 55min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
The preparation method of the samming liquid in the embodiment comprises the following steps: mixing 20 parts of hydrochloric acid solution, 5 parts of sodium alginate, 2 parts of strontium chloride and 25 parts of N, N-dimethylformamide, and stirring thoroughly to obtain a uniform dispersion.
The mass fraction of the hydrochloric acid solution of this example was 7%.
The preparation method of the corrosion resistant silane liquid comprises the following steps: 10 parts of hexamethylene diisocyanate is added into 20 parts of acetone solvent, stirring is carried out for 20min, the stirring speed is 200r/min, then 3 parts of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 2 parts of rare earth cerium chloride are added, stirring is continued for 20min at the speed of 450r/min, and the stirring is finished, thus obtaining the corrosion-resistant silane liquid.
The rare earth lanthanum chloride of the embodiment is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
The preparation method of the complex phase modified material of the embodiment comprises the following steps:
adding 10 parts of chromium oxide into 20 parts of ethanol solvent, then adding 2 parts of lanthanum maleate and 0.3 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
The ultrasonic power of the ultrasonic treatment in this example was 700W and the ultrasonic time was 35min.
In the fourth step of the embodiment, the reduction of area was 90%, the rolling speed was 12m/min, and the temperature rise in the deformation zone was 3500 ℃.
Example 3.
The manufacturing method of the aluminum-based composite pipe of the embodiment comprises the following steps:
step one: adding 3% of homogeneous phase modifier in the total amount of the liquid aluminum alloy into the liquid aluminum alloy of the 7 series or the 4 series at 690 ℃, stirring, casting to form an ingot, and adding 0.75% of complex phase modifier in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling an extrusion outlet, controlling the surface temperature to 525 ℃, and the extrusion speed to 3m/min, wherein the composite 3-series aluminum alloy is prepared into a base pipe by adopting a planetary rolling mill continuous casting and rolling method to compositely compound the outer surface of the aluminum pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
In the first step of this embodiment, the stirring treatment was carried out at a rotation speed of 600r/min for 40min.
The preparation method of the homogeneous phase formulation of the embodiment comprises the following steps:
s1: the potassium hexatitanate whisker is placed at 110 ℃ to carry out thermal reaction for 30min, then the temperature is raised to 190 ℃ at the speed of 2 ℃/s, the temperature is kept for 7.5min, and then the air cooling is carried out to the room temperature, so as to obtain the thermally modified potassium hexatitanate whisker;
s2: the thermally modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 80 ℃, the stirring rotating speed is 350r/min, the stirring time is 30min, and the uniformly dispersed modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 60 ℃, the stirring rotating speed is 650r/min, the stirring time is 50min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
The preparation method of the samming liquid in the embodiment comprises the following steps: 15 parts of hydrochloric acid solution, 2 parts of sodium alginate, 1.5 parts of strontium chloride and 20 parts of N, N-dimethylformamide are stirred and fully mixed to obtain a uniform dispersion.
The mass fraction of the hydrochloric acid solution of this example was 6%.
The preparation method of the corrosion resistant silane liquid comprises the following steps: adding 7.5 parts of hexamethylene diisocyanate into 15 parts of acetone solvent, stirring for 15min at a stirring speed of 150r/min, then adding 2 parts of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 1.5 parts of rare earth cerium chloride, continuously stirring at a stirring speed of 400r/min for 15min, and obtaining the corrosion-resistant silane liquid after the stirring is finished.
The rare earth lanthanum chloride of the embodiment is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
The preparation method of the complex phase modified material of the embodiment comprises the following steps:
adding 7.5 parts of chromium oxide into 15 parts of ethanol solvent, then adding 1.5 parts of lanthanum maleate and 0.2 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
The ultrasonic power of the ultrasonic treatment of this example was 600W and the ultrasonic time was 30min.
In the fourth step of the embodiment, the reduction of area is 75%, the rolling speed is 10m/min, and the temperature rise in the deformation zone is 400 ℃.
Comparative example 1.
The difference from example 3 is that no homogeneous formulation is added.
Comparative example 2.
The difference from example 3 is that the potassium hexatitanate whiskers in the homogeneous formulation are replaced by carbon nanotubes.
Comparative example 3.
The difference from example 3 is that silicon nitride whiskers are used as potassium hexatitanate whiskers in the homogeneous formulation.
Comparative example 4.
The difference from example 3 is that the preparation method of the homogeneous dispersion liquid is different:
15 parts of citric acid, 2 parts of sodium citrate, 1.5 parts of cobalt chloride and 20 parts of N, N-dimethylformamide are stirred and fully mixed to obtain a uniform dispersion.
Comparative example 5.
The difference from example 3 is the preparation of the corrosion resistant silane liquid:
adding 7.5 parts of tetra-n-propyl zirconate into 15 parts of acetone solvent, stirring for 15min at the stirring speed of 150r/min, then adding 2 parts of silane coupling agent KH560 and 1.5 parts of hydrochloric acid, continuously stirring for 15min at the stirring speed of 400r/min, and obtaining the corrosion-resistant silane liquid.
Comparative example 6.
Unlike example 3, no complex phase modifier was added.
Comparative example 7.
The difference from example 3 is that maleic anhydride is used instead of lanthanum maleate in the preparation of the complex phase modifier;
the preparation method of the complex phase modified material comprises the following steps:
adding 7.5 parts of chromium oxide into 15 parts of ethanol solvent, then adding 1.5 parts of maleic anhydride and 0.2 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
Comparative example 8.
The difference from example 3 is that no nanosilica was added in the preparation of the complex phase modifier.
Adopting a salt spray testing machine, wherein the pH is about 3.0-3.1, the temperature of a saturator is 40 ℃, the test temperature is 34.3 ℃, and the time for the surface corrosion phenomenon of the surface of the pipe is long after the test sample is subjected to corrosion performance test; measuring the heat conductivity coefficient according to the GB/T3651-2008 method; the test results were as follows:
experimental example 1
The products of examples 1-3 and comparative examples 1-8 were tested for performance as follows:
| face spot time (h) | Coefficient of thermal conductivity (W/(m.k)) | |
| Example 1 | 3450 | 174 |
| Example 2 | 3453 | 176 |
| Example 3 | 3456 | 178 |
| Comparative example 1 | 3115 | 153 |
| Comparative example 2 | 2950 | 184 |
| Comparative example 3 | 3352 | 170 |
| Comparative example 4 | 3215 | 165 |
| Comparative example 5 | 3196 | 162 |
| Comparative example 6 | 3265 | 181 |
| Comparative example 7 | 3412 | 171 |
| Comparative example 8 | 3387 | 168 |
As can be seen from examples 1-3 and comparative examples 1-8, the spot face time prepared in example 3 of the invention can reach 3456h, the heat conductivity coefficient can reach 178W/(m.k), and as can be seen from comparative example 2, the heat conductivity coefficient can be improved to 184W/(m.k) by adopting the carbon nano tube-substituted homogeneous phase modifier, but the spot face time can be formed in 2950h, and the corrosion resistance can be obviously reduced;
in the comparative example 3, the potassium hexatitanate whisker is replaced by the silicon nitride whisker, so that the corrosion resistance and the heat conduction performance are reduced, and the potassium hexatitanate whisker has special specificity;
in comparative examples 4-5, it can be seen that the preparation methods of the dispersion liquid and the corrosion-resistant silane liquid are different, the performance of the product is also reduced, and meanwhile, the preparation method of the corrosion-resistant silane liquid is changed, so that the trend of reduction of corrosion resistance and heat conduction is obvious;
as can be seen from comparative examples 6 to 8, the addition of the complex phase modifier slightly affects the heat conducting property, but can significantly enhance the corrosion resistance of the product;
meanwhile, lanthanum maleate in the complex-phase modified material is added to optimize the product performance, which can play an important role; and the addition of the nano silicon dioxide has optimal performance on corrosion resistance and heat conduction of the product.
Experimental example 2
180 DEG bending test is repeatedly carried out on the surface spot positions of the samples of the products of the examples 1-3 and the comparative examples 1-8 for more than 3 times, and whether the fracture phenomenon and the residual corrosive liquid are found in the fracture are tested;
the test performance is as follows:
the samples of the products of examples 1-3 were not broken, while in comparative examples 1-8, the remainder were broken except that the potassium hexatitanate whiskers in the homogeneous formulation were silicon nitride whiskers and the lanthanum maleate in the preparation of the complex phase modifier was replaced with maleic anhydride; however, in the samples of comparative examples 3 and 7, no fracture occurred, and the residual corrosive liquid was found, which indicates that the product was severely damaged by the corrosive liquid.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A method for manufacturing an aluminum-based composite pipe, comprising the steps of:
step one: adding a homogeneous phase modifier accounting for 1-5% of the total amount of the liquid aluminum alloy into the 7-series or 4-series liquid aluminum alloy at 660-720 ℃, stirring, casting to form an ingot, and adding 0.5-1.0% of complex phase modifier in casting;
step two: feeding the cast ingot into an extruder to extrude into an aluminum pipe, controlling the extrusion outlet, controlling the surface temperature to be 480-550 ℃, and the extrusion speed to be 1-5m/min, wherein the outer surface of the aluminum pipe is compounded with 3-series aluminum alloy by adopting a planetary rolling mill continuous casting and rolling method to prepare a base pipe;
step three: brushing and grinding the outer surface of the base pipe for the inner composite layer to remove the oxidation film, penetrating the base pipe and expanding the base pipe to form a sleeved pipe blank;
step four: and (3) rolling the sleeved tube blank for a single time by using a planetary tube rolling mill, and obtaining the composite tube after rolling is finished.
2. The method according to claim 1, wherein the rotation speed of the stirring treatment in the first step is 500-700r/min, and the stirring time is 35-45min.
3. The method for manufacturing an aluminum-based composite pipe according to claim 1, wherein the preparation method of the homogeneous phase modifier is as follows:
s1: placing the potassium hexatitanate whisker into a reactor at 100-120 ℃ for thermal reaction for 25-35min, then raising the temperature to 185-195 ℃ at the speed of 1-3 ℃/s, preserving the temperature for 5-10min, and then air-cooling to room temperature to obtain the thermally modified potassium hexatitanate whisker;
s2: the heat modified potassium hexatitanate whisker is sent into a uniform dispersion liquid to be stirred and dispersed, the stirring temperature is 75-85 ℃, the stirring rotating speed is 300-400r/min, the stirring time is 25-35min, and the uniform dispersion modified potassium hexatitanate whisker is obtained after the stirring is finished, water washing and drying;
s3: the uniformly dispersed modified potassium hexatitanate whisker is sent into corrosion resistant silane liquid for stirring and dispersing treatment, the stirring temperature is 55-65 ℃, the stirring rotation speed is 600-700r/min, the stirring time is 45-55min, and the homogeneous phase preparation is obtained after the stirring is finished, water washing and drying.
4. The method for manufacturing an aluminum-based composite pipe according to claim 3, wherein the method for preparing the homogeneous dispersion is as follows: mixing 10-20 parts of hydrochloric acid solution, 1-5 parts of sodium alginate, 1-2 parts of strontium chloride and 15-25 parts of N, N-dimethylformamide, and stirring thoroughly to obtain a uniform dispersion.
5. The method of manufacturing an aluminum-based composite pipe according to claim 4, wherein the mass fraction of the hydrochloric acid solution is 5-7%.
6. The method for manufacturing an aluminum-based composite pipe according to claim 3, wherein the method for preparing the corrosion-resistant silane liquid comprises the following steps: adding 5-10 parts of hexamethylene diisocyanate into 10-20 parts of acetone solvent, stirring for 10-20min at the stirring speed of 100-200r/min, then adding 1-3 parts of N-2-aminoethyl-3-aminopropyl trimethoxysilane and 1-2 parts of rare earth cerium chloride, continuously stirring for 10-20min at the speed of 350-450r/min, and obtaining the corrosion-resistant silane liquid after stirring.
7. The method for manufacturing an aluminum-based composite pipe according to claim 6, wherein the rare earth lanthanum chloride is prepared by mixing rare earth cerium and hydrochloric acid according to a weight ratio of 1:5.
8. The method for manufacturing an aluminum-based composite pipe according to claim 1, wherein the preparation method of the complex phase modification material comprises the following steps:
adding 5-10 parts of chromium oxide into 10-20 parts of ethanol solvent, then adding 1-2 parts of lanthanum maleate and 0.1-0.3 part of nano silicon dioxide, carrying out ultrasonic treatment, washing with water and drying to obtain the complex phase modified material.
9. The method of manufacturing an aluminum-based composite pipe according to claim 8, wherein the ultrasonic power of the ultrasonic treatment is 500-700W and the ultrasonic time is 25-35min.
10. The method for manufacturing an aluminum-based composite pipe according to claim 1, wherein the reduction of area in the fourth rolling step is 50% -90%, the rolling speed is 8-12 m/min, and the temperature rise in the deformation zone is 300-500 ℃.
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