CN102605368A - Surface treatment method for increasing conductivity of aluminum conductive body for switch cabinet - Google Patents
Surface treatment method for increasing conductivity of aluminum conductive body for switch cabinet Download PDFInfo
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Abstract
The invention relates to a surface treatment method for increasing the conductivity of an aluminum conductive body for a switch cabinet. The problems in the conventional surface treatment of the aluminum conductive body can be effectively solved, the conductive property is improved, and the electric transmission effects can be improved. The surface treatment method comprises the following steps of: firstly, preparing zinc soaking liquid, copper pre-plating liquid and copper plating liquid, wherein the zinc soaking liquid is prepared by dissolving sodium hydroxide in water, adding zinc oxide, heating the mixture until the mixture is entirely dissolved, dissolving ferric trichloride and sodium potassium tartrate tetrahydrate in the water, and adding the water and uniformly mixing after mixing; the copper pre-plating liquid is prepared by dissolving sodium cyanide in the water, adding cuprous cyanide, and adding the water to uniformly mix; and the copper plating liquid is prepared by respectively adding water to dissolve and mix copper pyrophosphate, potassium pyrophosphate and disodium hydrogen phosphate, dissolving amine triacetate with a sodium hydroxide solution, and adding the water after the both are mixed; removing oil of the aluminum conductive body, bleaching the aluminum conductive body, soaking the aluminum conductive body into the zinc soaking liquid for zinc soaking twice, placing the aluminum conductive body in the copper pre-plating liquid for copper pre-plating, washing the aluminum conductive body, and then arranging the aluminum conductive body in the copper plating liquid for copper plating so as to achieve a requested thickness. The surface treatment method provided by the invention is simple, is easy to operate and use, is good in effect, and is safe and environment-friendly. Therefore, the properties of a lead wire are improved.
Description
Technical field
The present invention relates to electricly, particularly a kind of switching cabinet increases the surface treatment method of conductive capability with the aluminium electrical conductor.
Background technology
In the switching cabinet distribution loop; It connects lead has a lot of local aluminium electrical conductor that adopt; Because the conductivity of aluminium is not as copper, and the specific conductivity that in the switching cabinet distribution loop, requires to connect lead wants high, connects the lead conductive capability to increase, reduce in the power transmission consumption electric energy.And the cost of copper material is high and lack.Therefore, in order to guarantee to connect conductive effect, the save energy of lead in the switching cabinet distribution loop and reduce cost, in the switching cabinet distribution loop, just require to split cabinet aluminium conductor surface, pass and handle.
Existing switching cabinet aluminium electrical conductor surface treatment mode has two kinds: a kind of is not do any chemical conversion treatment in the processing and making process, only scrub surfaces dust and greasy dirt.Another kind of handle promptly directly to be installed to after the decontamination of deoiling for chemistry (like pickling, alkali cleaning) use on the switching cabinet; But because the problem that exists on the treatment process; Its effect is also unsatisfactory; So how effectively handle the aluminium electrical conductor, do not see so far to have and adopt the surface treatment method that increases aluminium electrical conductor conductivity.
Summary of the invention
To above-mentioned situation; For overcoming the defective of prior art, the present invention's purpose just provides the surface treatment method of a kind of switching cabinet with aluminium electrical conductor increase conductive capability, the surface treatment that can effectively solve the aluminium electrical conductor; To increase conductivity, improve the problem of power transmission effect.
The technical scheme that the present invention solves is to be implemented by following steps:
1, preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 35-40g, sodium cyanide 7-8g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 280-300g, cupric pyrophosphate 60-70g, sodium hydrogen phosphate 23-25g, triacetamide 13-15g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
2, surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
3, zincate solution is handled: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak and pulled out in zinc 10-20 minute, remove moisture, repeat once again;
4, preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2-3A/dm2 current density, placed preparatory copper plating bath preplating copper 2-4 minute under 45oC-50oC, clean;
5, copper plating treatment: after preplating copper cleans, under 35oC-45oC, with the 0.5-0.8A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8-9.
The inventive method is simple, and use easy to operate is effective, safety, and environmental protection is effective to the surface treatment of switching cabinet aluminium electrical conductor, improves the lead performance, reduces energy consumption.
Embodiment
Elaborate below in conjunction with the embodiment specific embodiments of the invention.
The present invention can be provided by following examples in practical implementation:
Embodiment 1
The present invention can be realized by following steps in force:
1, preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 35g, sodium cyanide 7g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 280g, cupric pyrophosphate 60g, sodium hydrogen phosphate 23g, triacetamide 13g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Be the triacetamide volumetric concentration dissolving of 20% sodium hydroxide solution again; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
2, surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
3, zincate solution is handled: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 10 minutes, remove moisture, repeat once again;
4, preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 3A/dm2 current density, placed preparatory copper plating bath preplating copper 4 minutes under 45oC, clean;
5, copper plating treatment: after preplating copper cleans, under 35oC, with the 0.8A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.
Embodiment 2
The present invention can be realized by following steps:
1, preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 38g, sodium cyanide 7.5g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 290g, cupric pyrophosphate 65g, sodium hydrogen phosphate 24g, triacetamide 14g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
2, surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
3, zincate solution is handled: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 15 minutes, remove moisture, repeat once again;
4, preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2.5A/dm2 current density, placed preparatory copper plating bath preplating copper 3 minutes under 48oC, clean;
5, copper plating treatment: after preplating copper cleans, under 38oC, with the 0.7A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.5.
Embodiment 3
The present invention also can be realized by following steps:
1, preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 40g, sodium cyanide 8g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 300g, cupric pyrophosphate 70g, sodium hydrogen phosphate 25g, triacetamide 15g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
2, surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
3, zincate solution is handled: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 20 minutes, remove moisture, repeat once again;
4, preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2A/dm2 current density, placed preparatory copper plating bath preplating copper 2 minutes under 50oC, clean;
5, copper plating treatment: after preplating copper cleans, under 45oC, with the 0.5A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 9.
Embodiment 4
The present invention is realized by following steps:
1, preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 36g, sodium cyanide 7.5g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 285g, cupric pyrophosphate 68g, sodium hydrogen phosphate 23g, triacetamide 14.5g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
2, surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
3, zincate solution is handled: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 18 minutes, remove moisture, repeat once again;
4, preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2.8A/dm2 current density, placed preparatory copper plating bath preplating copper 3.5 minutes under 46oC, clean;
5, copper plating treatment: after preplating copper cleans, under 37oC, with the 0.6A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.
The inventive method is simple, and use easy to operate particularly through test and on probation, has obtained good effect; Through after handling, contact surface place contact resistance greatly reduces switching cabinet with aluminium conductor, and aluminium electrical conductor conductive capability has increased by 15 ~ 25%, significantly reduces the consumption in the power transmission process; Save energy, its effect good is that unanticipated arrives, and non-environmental-pollution; Treated aluminium electrical conductor integrates the strong point of aluminium light weight and copper good conductivity, and can increase surfacecti proteon property and ornamental, prolongs service life of equipment; Also be very beneficial for welding procedure, improve the equipment installation effectiveness, economic and social benefit is outstanding.
Claims (5)
1. a switching cabinet increases the surface treatment method of conductive capability with the aluminium electrical conductor, it is characterized in that, is implemented by following steps:
(1), preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 35-40g, sodium cyanide 7-8g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 280-300g, cupric pyrophosphate 60-70g, sodium hydrogen phosphate 23-25g, triacetamide 13-15g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
(2), surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
(3), zincate solution handles: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak and pulled out in zinc 10-20 minute, remove moisture, repeat once again;
(4), preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2-3A/dm2 current density, placed preparatory copper plating bath preplating copper 2-4 minute under 45oC-50oC, clean;
(5), copper plating treatment: after preplating copper cleans, under 35oC-45oC, with the 0.5-0.8A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8-9.
2. switching cabinet according to claim 1 is characterized in that with the surface treatment method of aluminium electrical conductor increase conductive capability, is realized by following steps:
(1), preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 35g, sodium cyanide 7g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 280g, cupric pyrophosphate 60g, sodium hydrogen phosphate 23g, triacetamide 13g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Be the triacetamide volumetric concentration dissolving of 20% sodium hydroxide solution again; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
(2), surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
(3), zincate solution handles: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 10 minutes, remove moisture, repeat once again;
(4), preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 3A/dm2 current density, placed preparatory copper plating bath preplating copper 4 minutes under 45oC, clean;
(5), copper plating treatment: after preplating copper cleans, under 35oC, with the 0.8A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.
3. switching cabinet according to claim 1 is characterized in that with the surface treatment method of aluminium electrical conductor increase conductive capability, is realized by following steps:
(1), preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 38g, sodium cyanide 7.5g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 290g, cupric pyrophosphate 65g, sodium hydrogen phosphate 24g, triacetamide 14g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
(2), surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
(3), zincate solution handles: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 15 minutes, remove moisture, repeat once again;
(4), preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2.5A/dm2 current density, placed preparatory copper plating bath preplating copper 3 minutes under 48oC, clean;
(5), copper plating treatment: after preplating copper cleans, under 38oC, with the 0.7A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.5.
4. switching cabinet according to claim 1 is characterized in that with the surface treatment method of aluminium electrical conductor increase conductive capability, is realized by following steps:
(1), preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 40g, sodium cyanide 8g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 300g, cupric pyrophosphate 70g, sodium hydrogen phosphate 25g, triacetamide 15g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
(2), surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
(3), zincate solution handles: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 20 minutes, remove moisture, repeat once again;
(4), preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2A/dm2 current density, placed preparatory copper plating bath preplating copper 2 minutes under 50oC, clean;
(5), copper plating treatment: after preplating copper cleans, under 45oC, with the 0.5A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 9.
5. switching cabinet according to claim 1 is characterized in that with the surface treatment method of aluminium electrical conductor increase conductive capability, is realized by following steps:
(1), preparation treatment fluid: described treatment fluid comprises zincate solution, preparatory copper plating bath, copper plating bath; Zincate solution is to be made by zinc oxide 100g, NaOH 500g, ferric trichloride 3g, sodium potassium tartrate tetrahydrate 10g, water, wherein, earlier NaOH is dissolved in the 500ml water; Constantly be stirred to complete dissolving; Add zinc oxide again, be heated to complete dissolving, become solution A; Ferric trichloride, sodium potassium tartrate tetrahydrate are dissolved in the low amounts of water; Become solution B, solution A is mixed with solution B, add water to the 1000ml mixing;
Copper plating bath is that water is processed by cuprous cyanide 36g, sodium cyanide 7.5g in advance, wherein, sodium cyanide is dissolved in the less water, adds cuprous cyanide again and makes it dissolving, adds water to the 1000ml mixing;
Copper plating bath is to be made by potassium pyrophosphate 285g, cupric pyrophosphate 68g, sodium hydrogen phosphate 23g, triacetamide 14.5g, NaOH, water; Wherein, Cupric pyrophosphate, potassium pyrophosphate, sodium hydrogen phosphate are added the low amounts of water dissolving respectively; Mix, constantly stir and make it to mix the one-tenth solution C; Again the triacetamide volumetric concentration is the dissolving of 20-30% sodium hydroxide solution; Become solution D, solution C and solution D are mixed, add water to the 1000ml mixing;
(2), surface treatment: switching cabinet aluminium electrical conductor was deoiled 2-4 minute with volumetric concentration 20-30% sodium hydroxide solution, use nitric acid liquid bleaching, the washing of volumetric concentration again as 60-70%;
(3), zincate solution handles: the switching cabinet aluminium electrical conductor after the surface treatment is gone into zincate solution soak zinc and pulled out in 18 minutes, remove moisture, repeat once again;
(4), preplating copper is handled: the switching cabinet aluminium electrical conductor after step 3 zincate solution is handled with the 2.8A/dm2 current density, placed preparatory copper plating bath preplating copper 3.5 minutes under 46oC, clean;
(5), copper plating treatment: after preplating copper cleans, under 37oC, with the 0.6A/dm2 current density, place copper plating bath copper facing to desired thickness, during the copper facing, copper plating bath pH value remains 8.
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| CN115109502B (en) * | 2022-08-09 | 2023-10-13 | 安徽新大陆特种涂料有限责任公司 | Production method of solvent-resistant static-conducting inner anti-corrosion coating |
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Application publication date: 20120725 |