CN102304742A - Surface treatment method for aluminum alloy overhead cable - Google Patents
Surface treatment method for aluminum alloy overhead cable Download PDFInfo
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- CN102304742A CN102304742A CN201110270259A CN201110270259A CN102304742A CN 102304742 A CN102304742 A CN 102304742A CN 201110270259 A CN201110270259 A CN 201110270259A CN 201110270259 A CN201110270259 A CN 201110270259A CN 102304742 A CN102304742 A CN 102304742A
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- aluminium alloy
- surface treatment
- concentration
- treatment method
- cable
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Abstract
The invention discloses a surface treatment method for aluminum alloy overhead cables. The method comprises steps that: (1) anode oxidation is carried out; (2) a confining process is carried out, wherein the confining process comprises steps that: A, aluminum alloy overhead cables processed from the anode oxidation technology is immersed into a confining liquid comprising Ce(NO3)3 with a concentration of 20 to 50mmol/L, CeCl3 with a concentration of 30 to 60mmol/L, and isopropyl alcohol with a concentration of 0.05 to 0.1mmol/L, wherein the pH value of the confining liquid is 5.0 to 6.0; and a confining treatment is carried out for 0.5 to 3 hours under a temperature of 35 to 45 DEG C; B, the cables processed through the step A is immersed into a tungstenic acid solution with a pH value of 7.0 to 9.0 and a concentration of 0.5 to 1mol/L; and constant potential polarization is carried out for 1 to 2 hours under room temperature in a condition of +100 to 900mV relative to a saturated calomel electrode, such that the confining process is finished. The method assists in the surface protection of cables.
Description
Technical field
The present invention relates to a kind of surface treatment method of cable, especially relate to the built on stilts cable surface treatment process of a kind of aluminium alloy.
Background technology
In field of power transmission, aluminium light weight, inexpensive, and electroconductibility is better, specific tenacity is high, wearability is good, thereby occupy superiority at electrical field.At overhead transmission line, especially on supertension line and the big span line, the aluminium alloy electric cable is the material of main part of overhead power transmission cable always.In short supply along with the copper resource is the electric wire Development Trend with aluminium for copper, and the aluminium alloy conductor core with multi-functional characteristic is the inevitable requirement of electric wire development.
Be effectively protection cable surface, mostly prior art be outside the conventional outer protections such as insulation layer, and seldom relate to the directly surface treatment of one of alloy cable surface.
Summary of the invention
To the deficiency of prior art, one of the object of the invention is to provide a kind of surface treatment method of new aluminium alloy cable, promptly through anodic oxidation to form stable protective membrane; To improve its mechanical property and transmission performance, be used for built on stilts transmission; Two of the object of the invention: provide a kind of process stabilizing, the simple aluminium of equipment and the enclosure method of aluminium alloy anode oxide film salt; The method that adopts chemistry to combine with electrochemistry; Aluminium and aluminium alloy anode oxide film are carried out sealing treatment; To replace toxicants such as used nickel salt of lock solution in the traditional technology and chromic salts, satisfy environmental protection requirement.
The prepared aluminium alloy cable of the present invention is: the surface treatment method of the built on stilts cable of a kind of aluminium alloy, said aluminium alloy comprise that the element of stating weight part constitutes:
Co 0.1-0.5％
Si 0.06-0.5％
Sr?0.05-0.1％
Zr?0.005-0.1％
Surplus is aluminium and unavoidable impurities.
Also comprise Be 0-0.05%.
Also comprise Mg 0-0.05%.
Also comprise Ti 0-0.02%.
Also comprise V 0-0.03%.
Beneficial effect of the present invention is: the Ce salt two step sealing methods with prior art, change single stage method into, and simplified technology, wherein the adding of Virahol is crucial, otherwise the single stage method sealing will cause sealing effect sharply to reduce.
Embodiment
Embodiment one
Co?0.1％
Si?0.06％
Sr?0.05％
Zr?0.005％
Surplus is aluminium and unavoidable impurities.
Concrete treatment process:
1) anodic oxidation;
2) sealing: A will pass through anode oxidation process aluminium alloy treated cable, be immersed in the pH value and be 6.0, concentration is 50mmol/L Ce (NO3)
3, concentration is 60mmol/L CeCl
3, Virahol 0.1mmol/L confining liquid in, 45 ℃ of following sealing treatment 3 hours;
To be 9.0 in the pH value through the cable of processing of step A, concentration is in the sodium tungstate solution of 1mol/L, under room temperature, under with respect to saturated calomel electrode 900mV condition, constant potential polarization 2 hours is accomplished sealing treatment.
Embodiment two:
Co 0.5％
Si 0.5％
Sr 0.1％
Zr 0.31％
Be 0.05％
Surplus is aluminium and unavoidable impurities.
Surface treatment method is with embodiment 1.
Embodiment three:
Co 0.1％
Si 0.06％
Sr 0.05％
Zr 0.02％
Mg 0.05％
Surplus is aluminium and unavoidable impurities.
Concrete treatment process is:
1) anodic oxidation;
2) sealing: A will pass through anode oxidation process aluminium alloy treated cable, be immersed in the pH value and be 5.0, concentration is 20mmol/L Ce (NO3)
3, concentration is 30mmol/L CeCl
3, Virahol 0.05mmol/L confining liquid in, 35 ℃ of following sealing treatment 0.5 hour;
To be 7.0 in the pH value through the cable of processing of step A, concentration is in the sodium tungstate solution of 0.5mo l/L, under room temperature, under with respect to saturated calomel electrode+100mV condition, constant potential polarization 1 hour is accomplished sealing treatment.
Embodiment four:
Co 0.5％
Si 0.5％
Sr 0.1％
Zr 0.05％
Be 0.05％
Mg 0.05％
Ti 0.02％
V 0.03％。
Treatment process is with embodiment 3.
Through detecting, the aluminium alloy cable tensile strength of above embodiment is 243-262N/mm2, and elongation is 5.1-6.3%, and electric conductivity is 57-61.5 IACS%.
Applicant's statement; The present invention illustrates detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, to any improvement of the present invention, to the equivalence replacement of each raw material of product of the present invention and the interpolation of ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (5)
1. the surface treatment method of the built on stilts cable of an aluminium alloy, said aluminium alloy comprises that the element of stating weight part constitutes:
Co?0.1-0.5％
Si?0.06-0.5％
Sr?0.05-0.1％
Zr?0.005-0.1％
Surplus is aluminium and unavoidable impurities, it is characterized in that: said treatment process is an anode oxidation process, and concrete technology is following:
1) anodic oxidation;
2) sealing: A will pass through anode oxidation process aluminium alloy treated cable, be immersed in the pH value and be 5.0～6.0, concentration is 20-50mmol/L Ce (NO3)
3, concentration is 30-60mmol/L CeCl
3, Virahol 0.05-0.1mmol/L confining liquid in, at 35-45 ℃ of following sealing treatment 0.5-3 hour;
B. will be 7.0～9.0 in the pH value through the cable of processing of step A, concentration is in the sodium tungstate solution of 0.5～1mol/L, under room temperature, under with respect to saturated calomel electrode+100～900mV condition, constant potential polarization 1-2 hour, accomplishes sealing treatment.
2. the surface treatment method of aluminium alloy cable according to claim 1 is characterized in that: also comprise Be 0-0.05%.
3. the surface treatment method of aluminium alloy cable according to claim 1 and 2 is characterized in that: also comprise Mg 0-0.05%.
4. the surface treatment method of aluminium alloy cable according to claim 1 is characterized in that: also comprise Ti 0-0.02%.
5. according to the surface treatment method of claim 1,2 or 4 described aluminium alloy cables, it is characterized in that: also comprise V 0-0.03%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110270259A CN102304742A (en) | 2011-09-13 | 2011-09-13 | Surface treatment method for aluminum alloy overhead cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110270259A CN102304742A (en) | 2011-09-13 | 2011-09-13 | Surface treatment method for aluminum alloy overhead cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102304742A true CN102304742A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110270259A Pending CN102304742A (en) | 2011-09-13 | 2011-09-13 | Surface treatment method for aluminum alloy overhead cable |
Country Status (1)
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| CN (1) | CN102304742A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10586633B2 (en) | 2012-08-10 | 2020-03-10 | General Cable Technologies Corporation | Surface modified overhead conductor |
| US10957468B2 (en) | 2013-02-26 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductors and methods |
| CN113481562A (en) * | 2021-07-30 | 2021-10-08 | 江苏库纳实业有限公司 | Surface treatment method of aluminum alloy door and window profile |
-
2011
- 2011-09-13 CN CN201110270259A patent/CN102304742A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10586633B2 (en) | 2012-08-10 | 2020-03-10 | General Cable Technologies Corporation | Surface modified overhead conductor |
| US10957468B2 (en) | 2013-02-26 | 2021-03-23 | General Cable Technologies Corporation | Coated overhead conductors and methods |
| CN113481562A (en) * | 2021-07-30 | 2021-10-08 | 江苏库纳实业有限公司 | Surface treatment method of aluminum alloy door and window profile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |