CN104157374A - Preparation of corrosion-resistant steel-cored aluminum stranded conductor coated with Ni-P-phytic acid amorphous plating - Google Patents
Preparation of corrosion-resistant steel-cored aluminum stranded conductor coated with Ni-P-phytic acid amorphous plating Download PDFInfo
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- CN104157374A CN104157374A CN201410399048.4A CN201410399048A CN104157374A CN 104157374 A CN104157374 A CN 104157374A CN 201410399048 A CN201410399048 A CN 201410399048A CN 104157374 A CN104157374 A CN 104157374A
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- phytic acid
- corrosion
- steel core
- aluminum stranded
- amorphous
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 115
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000005260 corrosion Methods 0.000 title claims abstract description 69
- 239000004020 conductor Substances 0.000 title claims abstract description 66
- 230000007797 corrosion Effects 0.000 title claims abstract description 66
- 238000007747 plating Methods 0.000 title claims abstract description 53
- 239000000467 phytic acid Substances 0.000 title claims abstract description 45
- 229940068041 phytic acid Drugs 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 96
- 239000010959 steel Substances 0.000 claims abstract description 96
- 239000000126 substance Substances 0.000 claims abstract description 43
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 239000004411 aluminium Substances 0.000 claims description 86
- 238000000576 coating method Methods 0.000 claims description 34
- 239000011248 coating agent Substances 0.000 claims description 30
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 29
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 29
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 21
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 16
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 12
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 12
- 235000002949 phytic acid Nutrition 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000004310 lactic acid Substances 0.000 claims description 8
- 235000014655 lactic acid Nutrition 0.000 claims description 8
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 8
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 8
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 8
- 239000001488 sodium phosphate Substances 0.000 claims description 8
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 8
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 8
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 150000008107 benzenesulfonic acids Chemical class 0.000 claims description 4
- 239000001230 potassium iodate Substances 0.000 claims description 4
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 claims description 4
- 235000006666 potassium iodate Nutrition 0.000 claims description 4
- 229940093930 potassium iodate Drugs 0.000 claims description 4
- 235000019260 propionic acid Nutrition 0.000 claims description 4
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 4
- 238000005480 shot peening Methods 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000011775 sodium fluoride Substances 0.000 claims description 4
- 235000013024 sodium fluoride Nutrition 0.000 claims description 4
- 239000001384 succinic acid Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 230000002929 anti-fatigue Effects 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 20
- 229910018104 Ni-P Inorganic materials 0.000 description 18
- 229910018536 Ni—P Inorganic materials 0.000 description 18
- 239000010410 layer Substances 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- 239000011780 sodium chloride Substances 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 210000000689 upper leg Anatomy 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 3
- 108091006629 SLC13A2 Proteins 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000007431 microscopic evaluation Methods 0.000 description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ZPQUUTZEYZYEIY-UHFFFAOYSA-N [Mn].[V].[Cr].[Ti] Chemical compound [Mn].[V].[Cr].[Ti] ZPQUUTZEYZYEIY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
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- 238000007772 electroless plating Methods 0.000 description 1
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- 230000008570 general process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical class O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- 229910052721 tungsten Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Non-Insulated Conductors (AREA)
Abstract
The invention provides a corrosion-resistant anti-icing steel-cored aluminum stranded conductor coated with a Ni-P-phytic acid amorphous plating used in extreme environments. Both the steel core and the aluminum strand of the steel-cored aluminum stranded conductor contain a Ni-P-phytic acid amorphous plating through chemical plating. The amorphous corrosion-resistant protective layer with a dense surface has very good anti-fatigue performance, a smooth surface and strong self-cleaning ability, and the manufacturing process technology is simple. The problem that the surface of a steel-cored aluminum stranded conductor cannot resist corrosion effectively for a long time is solved, and the problem that the mechanical performance of an overhead steel-cored aluminum stranded conductor is decreased due to pitting corrosion, atmospheric tide corrosion, stress corrosion and galvanic corrosion under extreme weather conditions like coastal wet and cold rain is also solved. Both the steel core and the aluminum strand of the steel-cored aluminum stranded conductor contain a Ni-P-phytic acid amorphous plating through chemical plating. The amorphous corrosion-resistant protective layer with a dense surface has very good anti-fatigue performance, a smooth surface and strong self-cleaning ability, and the manufacturing process technology is simple.
Description
Technical field
The present invention is specifically related to the preparation of a kind of surface containing the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit.
Background technology
Steel reinforced aluminium conductor is the steel core being hinged to by the zinc-coated wire of core or aluminium plated steel wire, and outside is made up of one deck or which floor hinged aluminium stranded conductor.The aluminium purity that aluminium stranded conductor uses is very high, according to GB GB1179-83, siliceously in aluminium strand be not more than 0.13%, iron is not more than 0.16%, silicon adds that iron is not more than 0.26%, titanium vanadium manganese chromium sum is not more than 0.01%, surface can form the passivating film of one deck densification, and be combined very firmly with aluminum substrate, just because of this layer of natural oxide-film, make aluminium and alloy thereof stable at conventional environment performance, be not easy to be corroded, can serve as the main conductor material of ultra-high-tension power transmission line.Steel reinforced aluminium conductor is swinging and produce fretting wear and fretting fatigue under wind, freezing and other adverse circumstances factors impacts on the one hand; The function influence that stands on the other hand the corrosive mediums such as atmosphere moisture, chemical gas, dust and salts substances, corrodes, and from littoral industrial area, industrial area, coastal area and rural area be arranged in order, corrosion progressively alleviates.Fine motion and corrosion tend to produce synergistic effect (fretting corrosion), and the damage of aggravation wire causes the transmission of electricity accident such as broken string, disconnected thigh.Corrosion failure is one of main damage form of steel reinforced aluminium conductor.The etch state of wire has chemical corrosion and electrochemical corrosion, and taking electrochemical corrosion as main, and be mainly outer corrosion.In the time that air humidity is larger, conductive line surfaces moisture can be condensed into moisture film, the O of atmosphere
2, CO
2and other gas is as H
2s, NH
2, SO
2, NO
2, Cl
2, HCl etc. is dissolved in moisture film with salts substances, forms Thin Electrolyte Layer.Thin Electrolyte Layer and metal oxide film react and produce pitting.At the inner aluminium thigh of wire and zinc-plated steel core contact layer, due to electrode potential difference, also can produce contact corrosion.Aluminium thigh is corroded rear surface can produce white powder, and is covered with pit, and aluminium thigh and steel core contact layer also can produce white powder thing, wire obviously becomes fragile simultaneously, tensile strength obviously reduces, and can cause disconnected strand, broken string when serious, has shortened widely the useful life of wire.In region following the line of the sea, the life-span is low especially especially.Just occur disconnected strand of broken string as a 35KV steel reinforced aluminium conductor on island, Fujian Province only uses 5 years, with respect to the useful life of steel reinforced aluminium conductor 30-40, the life-span is much lower.This may be relevant with more than long-term 4 grades wind and many typhoons of summer and autumn with marine atmosphere moist on island, causes damp atmospheric corrosion, pitting corrosion and stress corrosion.It is worth mentioning that, from the corrosion condition of every layer, inefficacy wire, the corrosion of unlined aluminium strand is even more serious than the corrosion of outer aluminium strand, this may be also relevant with the gap of top layer aluminium strand, make corrosive medium enter internal layer surface by top layer, the corrosion product on internal layer surface cannot be discharged from gap, produces larger stress and concentrates, and corrodes more serious.Therefore for steel reinforced aluminium conductor, must produce on surface the good anticorrosion layer of the resistance to pneumatic adhesion of one deck, reduce corrosive medium and invade unlined aluminium strand.Along with increasing of current extreme weather conditions, steel reinforced aluminium conductor is had higher requirement.
Chemical plating is a kind of under the state without impressed current, utilizes the reducing agent self catalyzed reduction deposition on activation surface of the work in plating solution, thereby obtains the method for coating.Ni-P chemical plating is, taking hypophosphites as reducing agent, the nickel ion in plating solution is reduced into metallic nickel, deposits on piece surface, until reach needed thickness, part is taken out, and reaction will stop.When chemical nickel plating, phosphate itself also can be reduced, and jointly deposits on the surface of metal parts, and gained coating is nickel phosphorus bianry alloy.By adjusting the content of P, just can obtain the not Ni-P coating of jljl phase.Generally, for binary Ni-P, P content exceedes 8% just can obtain amorphous deposit.Chemical plating is easy to operate, technique is simple, chemical nickel plating can make the corrosion resistance of aluminium and aluminium alloy and resistance to wear have raising largely, and not being subject to the restriction of shape, is the lower and the most promising process of cost in aluminium and aluminium alloy, steel part surface treatment method.
The mode of chemical Ni-P plating amorphous coating is a lot, fills a prescription also a lot, and the Ni-P of existing binary, also can increase Co, W, and Al, SiC even PTFE etc. improves its corrosion resistance and mechanical performance.Ni-P coating technology taking steel as matrix is more ripe, and obtain extensive use [Li Ning, Yuan Guowei, Li Deyu. Electroless Nickel-Based Alloy Plating theory and technology. Harbin: publishing house of Harbin Institute of Technology, 2000].But for nothing report on the steel core of steel reinforced aluminium conductor.
Late 1970s, aluminium and alloy chemical nickel-plating thereof are own through there being breakthrough technically, and have obtained extensive use.In this technology, the most important thing is reliable, reproducible pretreatment technology.Up to the present double zincate process (claiming again zincate processing) is still considered to be applicable to the robust techniques of most of aluminium and aluminium alloy.But can not obtain in conjunction with the good coat of metal on the oxide-film of aluminium surface compact.In order to obtain the good coat of metal of associativity, must first remove this layer of oxide-film, and ensure not regenerate before the coat of metal plates.This is the key of aluminium and alloy pre-treatment thereof.At present aluminium and the pretreatment of aluminum alloy technique of mature and reliable are double zincate process, and the technological process of its chemical plating nickel-phosphorus alloy is: pre-plating piece → oil removing → washing → alkali cleaning → washing → pickling → wash → soak zinc → wash → move back zinc → washing → secondary soaking zinc → washing → alkali electroless nickel preplating → washing → acid chemical plating nickel.Theory and application study that chemical plating is carried out on steel reinforced aluminium conductor surface are not reported yet.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, the preparation of a kind of surface containing the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit is provided.This coating is anti-corrosion weather resistance excellence not only, and keeps mechanical property and the electric property of steel reinforced aluminium conductor constant.The steel reinforced aluminium conductor with amorphous deposit can keep good corrosion resistance after strong vibration, and gap does not appear in surfaces of aluminum twisted wire, is particularly suitable for the extreme atmosphere such as coastal humidity, cold rain and descends to use.
For achieving the above object, the present invention adopts following technical scheme:
Surface, containing a preparation for the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, is first carried out steel core surface after chemical plating processing hinged aluminium stranded conductor; Then steel reinforced aluminium conductor surface, again after chemical plating is processed, makes the corrosion resisting steel core aluminum stranded wire of surface containing Ni-P-phytic acid amorphous deposit.
Described surface is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, and concrete preparation technology is: steel core is first after oil removing, washing oven dry, sandblast or shot-peening, chemical plating, washing are dried, hinged aluminium stranded conductor; Then steel reinforced aluminium conductor makes the corrosion resisting steel core aluminum stranded wire of surface containing Ni-P-phytic acid amorphous deposit through oil removing, washing oven dry, sandblast or shot-peening, chemical plating, washing after drying.
Described chemical plating is the amorphous coating that the coating amorphous coating that contains Ni-P--phytic acid or coating contain Ni-P--phytic acid-PTFE.
The coating method of the amorphous coating that contains Ni-P--phytic acid is: 80 ~ 90 DEG C of temperature, under the condition that pH is 4.5 ~ 5.0, impregnated in phytic acid composite plating bath, and plating 2 ~ 4h, coating layer thickness is 10-30 μ m.
It consists of described phytic acid composite plating bath: nickelous sulfate 30g/L, inferior sodium phosphate 36g/L, phytic acid 10 ~ 25g/L, citric acid 15g/L, lactic acid 25ml/L, sodium fluoride 1g/L, succinic acid 5g/L, propionic acid 5ml/L.
The coating method of the amorphous coating that contains Ni-P--phytic acid-PTFE is: 80 ~ 90 DEG C of temperature, under the condition that pH is 4.5 ~ 5.0, impregnated in phytic acid-PTFE composite plating bath, and plating 2 ~ 4h, coating layer thickness is 10-30 μ m.
It consists of described phytic acid-PTFE composite plating bath: nickelous sulfate 25g/L, inferior sodium phosphate 25g/L, phytic acid 10 ~ 25g/L, citric acid 15g/L, lactic acid 25ml/L, Potassiumiodate 0.05mg/L, dialkyl benzene sulfonic acids sodium 0.05mg/L, PTFE particle 5 ~ 8g/L.
Electroless composite plating-PTFE(polytetrafluoroethylene) be that PTFE particle is scattered in Ni-P coating.Because the chemical stability of PTFE particulate is good, coefficient of friction extremely low (being only 0.05), surface is can be also low and have the not feature such as viscosity, thereby Ni-P-PTFE coating is used widely at many industrial departments such as machinery, weaving, chemical industry.In composite plating bath, add cationic surface active agent and can make PTFE particle positively charged, can make more PTFE particle deposition in metal surface under Electrostatic Absorption, in coating, compound particle content can increase.Adopt FC4 and nonionic FCl0 surfactant to mix and can obtain distribution of particles evenly and the higher composite deposite of content.
beneficial effect of the present invention is:
Key technology of the present invention, is to adopt electroless plating technology to increase containing Ni-P-phytic acid amorphous coating at the steel core through sandblast or bead and steel reinforced aluminium conductor surface, and prepared aluminium stranded conductor can reach good anti-corrosion effect, and whole operating process is simple.
The invention solves the corrosion-resistant problem that steel reinforced aluminium conductor surface can not be permanently effective, solved the problem of the steel reinforced aluminium conductor mechanical properties decrease that atmospheric corrosion, stress corrosion and the galvanic corrosion because of pitting corrosion, tide of overhead aluminum twisted wire under the extreme weather conditions such as coastal humidity and cold rain cause.The steel core of this steel reinforced aluminium conductor and aluminium strand all contain Ni-P-phytic acid amorphous deposit through chemical plating, and the anti-corrosion protective layer of amorphous of surface compact has good anti-fatigue performance, any surface finish, and self-cleaning ability is strong, and manufacturing process technology is simple.
Embodiment
The present invention further illustrates the present invention with the following example, but protection scope of the present invention is not limited to the following example.
embodiment 1
(1) 7 strand of steel core that the galvanized steel wire that diameter is 2mm strand system forms, the NaOH solution-treated that is 10% through the mass fraction of boiling is deoiled for 5 minutes, and washing is dried;
(2) with quartz sand, blasting treatment is carried out in its surface, main purpose is rust cleaning, and increases the anti-fatigue performance of steel wire;
(3) amorphous coating that chemical plating contains Ni-P-phytic acid: nickelous sulfate 30g/L, inferior sodium phosphate 36g/L, phytic acid 10g/L, citric acid 15g/L, lactic acid 25ml/L, sodium fluoride 1g/L, succinic acid 5g/L, propionic acid 5ml/L; Be 80 DEG C in temperature, pH is controlled at 5, plating 2h, and coating layer thickness is 10 μ m;
(4) washing, dries;
(5) steel reinforced aluminium conductor is 2.4mm by diameter, and 10 strands of outer 16 strands, internal layer are hinged on the steel core of above-mentioned Ni-P amorphous deposit; The NaOH solution-treated that is 10% through the mass fraction of boiling is deoiled and is removed surperficial dense oxide for 5 minutes, and washing is dried;
(6) with quartz sand, blasting treatment is carried out in its surface, main purpose is to remove oxide on surface, increases the anti-fatigue performance of aluminium;
(7) amorphous coating that chemical plating contains Ni-P-phytic acid: nickelous sulfate 30g/L, inferior sodium phosphate 36g/L, phytic acid 18g/L, citric acid 15g/L, lactic acid 25ml/L, sodium fluoride 1g/L, succinic acid 5g/L, propionic acid 5ml/L; Be 85 DEG C in temperature, pH is controlled at 5, plating 4h;
(8) washing, dries, for subsequent use.
Detect:
Steel core and aluminium stranded conductor surface are all simulated respectively to littoral industrial area (3% NaCl+3% NaHSO through the steel reinforced aluminium conductor of chemical Ni-P plating-phytic acid amorphous deposit and the steel reinforced aluminium conductor of commercially available same specification
3), industrial area (3% NaHSO
3), coastal area (3% NaCl solution) and rural area (H
2etc. O) weather conditions carry out dip etching, and microscopic analysis is carried out in the surface of coating.Soak time 72h, there is not any variation in the former, the steel reinforced aluminium conductor of commercially available same specification is (3% NaCl+3% NaHSO in littoral industrial area
3), industrial area (3% NaHSO
3) in, a large amount of bubble of emerging, corrode very serious, the size reduction of steel wire, aluminium strand, in coastal area also there is larger corrosion in (3% NaCl solution), surface occurred some corrosion apertures, this may may destroy relevant with aluminium surface passivated membrane.Even if at rural area (H
2o), in, corrosion also can occur, and has lost the gloss of metallic aluminium.Take steel reinforced aluminium conductor apart, internal layer steel core also stands corrosion, has rusty stains.
When soak time reaches 168h(7 days) after, steel core and aluminium stranded conductor surface all through the steel reinforced aluminium conductor of chemical Ni-P plating amorphous deposit in littoral industrial area (3% NaCl+3% NaHSO
3), industrial area (3% NaHSO
3) in, start to occur bubble, along with the prolongation of time, bubble is more and more.After 12 hours, active layer is washed away by bubble, starts to come off, and forms larger hole.Take wire apart, inside does not have humidity, and steel core is intact.The disconnected thigh of wire is all because steel core is corroded and causes mechanical properties decrease to cause.Steel core is intact shows that the decay resistance of this wire is very strong.
Salt spraytest condition: NaC1 solution (concentration 50 ± 5 g/L), temperature is 35 ± 2 DEG C, and pH is 3.1～3.3, adopts discontinuous operation, and be 8 h interval time, and test duration is 32 h.There is steel core and aluminium stranded conductor surface and all do not occur through the steel reinforced aluminium conductor surface of chemical Ni-P plating-phytic acid amorphous deposit that any surface changes, and there are a large amount of white corrosion products in the surface of the steel reinforced aluminium conductor of commercially available same specification, the latter is taken apart, and aluminium stranded conductor and steel core all suffer heavy corrosion.Proceed salt mist experiment 112h, namely passed through the salt mist experiment of 144h, there is steel core and aluminium stranded conductor surface and all start to occur corroding aperture through the steel reinforced aluminium conductor surface of chemical Ni-P plating-phytic acid amorphous deposit.Although it should be noted that the salt mist experiment that has experienced 144h, except having aperture, Yan Heshui is not all adhered to through the steel reinforced aluminium conductor surface of chemical Ni-P plating-phytic acid amorphous deposit in steel core and aluminium stranded conductor surface, and surface is still very clean.
embodiment 2
(1) 7 strand of steel core that the galvanized steel wire that diameter is 2mm strand system forms, the NaOH solution-treated that is 10% through the mass fraction of boiling is deoiled for 5 minutes, and washing is dried;
(2) with quartz sand, blasting treatment is carried out in its surface, main purpose is rust cleaning, and increases the anti-fatigue performance of steel wire;
(3) amorphous coating that chemical plating contains Ni-P-phytic acid-PTFE: nickelous sulfate 25g/L, inferior sodium phosphate 25g/L, phytic acid 25g/L, citric acid 15g/L, lactic acid 25ml/L, Potassiumiodate 0.05mg/L, dialkyl benzene sulfonic acids sodium 0.05mg/L, PTFE particle 8g/L, 85 DEG C of temperature, pH is controlled at 4.5 left and right, stirs plating 4h, and coating layer thickness is 30 μ m;
(4) washing, dries;
(5) the galvanized steel wire strand system of the aluminium strand that steel reinforced aluminium conductor is 2.4mm by 26 strands of diameters and the above-mentioned amorphous coating containing Ni-P-PTFE forms; Aluminum steel divides 2 layers of winding, outer 16 strands, internal layer 10 strands, and the NaOH solution-treated that is 10% through the mass fraction of boiling is deoiled and is removed surperficial dense oxide for 5 minutes, and washing is dried;
(6) with quartz sand, blasting treatment is carried out in its surface, main purpose is to remove oxide on surface, and increases the anti-fatigue performance of aluminium;
(7) amorphous coating of chemical Ni-P plating--phytic acid-PTFE: nickelous sulfate 25g/L, inferior sodium phosphate 25g/L, citric acid 15g/L, phytic acid 10g/L, lactic acid 25ml/L, Potassiumiodate 0.05mg/L, dialkyl benzene sulfonic acids sodium 0.05mg/L, PTFE particle 5g/L, 90 DEG C of temperature, pH is controlled at 5.0 left and right, stirs plating 4h;
(8) washing, dries, for subsequent use.
Detect:
Steel core and aluminium stranded conductor surface are all simulated respectively to littoral industrial area (3% NaCl+3% NaHSO through the steel reinforced aluminium conductor of chemical Ni-P plating-phytic acid-PTFE amorphous deposit and the steel reinforced aluminium conductor of commercially available same specification
3), industrial area (3% NaHSO
3), coastal area (3% NaCl solution) and rural area (H
2etc. O) weather conditions carry out dip etching, and microscopic analysis is carried out in the surface of coating.Soak time 72h, there is not any variation in the former surface, the steel reinforced aluminium conductor of commercially available same specification is (3% NaCl+3% NaHSO in littoral industrial area
3), industrial area (3% NaHSO
3) in corrosion very serious, size reduction is obvious, in coastal area (3% NaCl solution) also occur corrosion, at rural area (H
2o) more lightly, there is white powder in surface in corrosion.When soak time reaches after 240h, the steel reinforced aluminium conductor of surface chemical plating Ni-P-phytic acid PTFE amorphous deposit is (3% NaCl+3% NaHSO in littoral industrial area
3), industrial area (3% NaHSO
3) in, start to occur bubble, along with the prolongation of time, bubble is more and more.After 6h, take out, Ni-P-phytic acid-PTFE amorphous deposit has crackle to occur, the visible aluminium of part cracks.Take steel reinforced aluminium conductor apart, the inner seldom region humidity of steel reinforced aluminium conductor, suffers dielectric corrosion, and steel core is still intact, without any signs of corrosion.Although illustrate that corrosive liquid enters aluminium strand inside by gap, enters inner corrosive liquid few, and can not cause corrosion to steel core.
Salt spraytest condition: NaC1 solution (concentration 50 ± 5 g/L), temperature is 35 ± 2 DEG C, and pH is 3.1～3.3, adopts discontinuous operation, and be 8 h interval time, and test duration is 32h.Steel core and aluminium stranded conductor surface are all through chemical Ni-P plating--and the steel reinforced aluminium conductor of phytic acid-PTFE amorphous deposit does not occur that any surface changes, and there are a large amount of white corrosion products in the surface of the steel reinforced aluminium conductor of commercially available same specification, the latter is taken apart, and inner aluminium stranded conductor and steel core are all corroded.Continue spraying experiment and observe 32h, the former still keeps bright state in surface, and the latter surface is all corrosion product, and after sonic oscillation cleans, it is hinged that the latter loses completely, is complete dispersity.
Steel core and aluminium stranded conductor surface all occur that through the steel reinforced aluminium conductor of chemical Ni-P plating-PTFE amorphous deposit the total spraying of general process of the time experimental period section chief of corrosion aperture reaches 240h.There are some corrosion apertures in surface now, because salt and water do not adhere to substantially on its surface, greatly extended its useful life.
Steel core and aluminium stranded conductor surface are all vibrated through the steel reinforced aluminium conductor of chemical Ni-P plating-phytic acid-PTFE amorphous deposit and the steel reinforced aluminium conductor of commercially available same specification, then proceed salt mist experiment, the former corrosion point occurs in the time of 196h, now coating and matrix some separate, and the latter occurs that the time of corrosion point is very short, after 8h salt fog, just occur, and after the latter takes apart, found also corrosion of inside.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. surface, containing a preparation for the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, is characterized in that: first steel core surface is carried out after chemical plating processing to hinged aluminium stranded conductor; Then steel reinforced aluminium conductor surface, again after chemical plating is processed, makes the corrosion resisting steel core aluminum stranded wire of surface containing Ni-P-phytic acid amorphous deposit.
2. surface according to claim 1 is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, it is characterized in that: concrete preparation technology is: steel core is first after oil removing, washing oven dry, sandblast or shot-peening, chemical plating, washing are dried, hinged aluminium stranded conductor; Then steel reinforced aluminium conductor makes the corrosion resisting steel core aluminum stranded wire of surface containing Ni-P-phytic acid amorphous deposit through oil removing, washing oven dry, sandblast or shot-peening, chemical plating, washing after drying.
3. surface according to claim 1, containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, is characterized in that: described chemical plating is the amorphous coating that the coating amorphous coating that contains Ni-P--phytic acid or coating contain Ni-P--phytic acid-PTFE.
4. surface according to claim 3 is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, it is characterized in that: the coating method of the amorphous coating that contains Ni-P--phytic acid is: 80 ~ 90 DEG C of temperature, pH is under 4.5 ~ 5.0 condition, impregnated in phytic acid composite plating bath, plating 2 ~ 4h, coating layer thickness is 10-30 μ m.
5. surface according to claim 4 is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, it is characterized in that: it consists of described phytic acid composite plating bath: nickelous sulfate 30g/L, inferior sodium phosphate 36g/L, phytic acid 10 ~ 25g/L, citric acid 15g/L, lactic acid 25ml/L, sodium fluoride 1g/L, succinic acid 5g/L, propionic acid 5ml/L.
6. surface according to claim 3 is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, it is characterized in that: the coating method of the amorphous coating that contains Ni-P--phytic acid-PTFE is: 80 ~ 90 DEG C of temperature, pH is under 4.5 ~ 5.0 condition, impregnated in phytic acid-PTFE composite plating bath, plating 2 ~ 4h, coating layer thickness is 10-30 μ m.
7. surface according to claim 6 is containing the preparation of the corrosion resisting steel core aluminum stranded wire of Ni-P-phytic acid amorphous deposit, it is characterized in that: it consists of described phytic acid-PTFE composite plating bath: nickelous sulfate 25g/L, inferior sodium phosphate 25g/L, phytic acid 10 ~ 25g/L, citric acid 15g/L, lactic acid 25ml/L, Potassiumiodate 0.05mg/L, dialkyl benzene sulfonic acids sodium 0.05mg/L, PTFE particle 5 ~ 8g/L.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405795A (en) * | 2002-11-04 | 2003-03-26 | 山东大学 | High-corrosion-resisting, high strength composite steel wire and its manufacturing process |
| CN1451782A (en) * | 2003-04-25 | 2003-10-29 | 中国科学院上海硅酸盐研究所 | Ni-P composite coating contg. silicon carbide and PTFE |
| CN103144370A (en) * | 2011-12-07 | 2013-06-12 | 深圳富泰宏精密工业有限公司 | Aluminum product and preparation method thereof |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405795A (en) * | 2002-11-04 | 2003-03-26 | 山东大学 | High-corrosion-resisting, high strength composite steel wire and its manufacturing process |
| CN1451782A (en) * | 2003-04-25 | 2003-10-29 | 中国科学院上海硅酸盐研究所 | Ni-P composite coating contg. silicon carbide and PTFE |
| CN103144370A (en) * | 2011-12-07 | 2013-06-12 | 深圳富泰宏精密工业有限公司 | Aluminum product and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| XIUFANG CUI等: "Electroless Ni–P plating with a phytic acid pretreatment on AZ91D", 《MATERIALS CHEMISTRY AND PHYSICS》, vol. 121, no. 12, 15 May 2010 (2010-05-15), pages 308 - 313, XP026968892 * |
| 王勇: "中温高磷化学镀镍工艺的研究", 《工程科技I辑》, 15 December 2011 (2011-12-15) * |
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