CN101348930B - Electroplating method of aluminum alloy - Google Patents
Electroplating method of aluminum alloy Download PDFInfo
- Publication number
- CN101348930B CN101348930B CN2008100717432A CN200810071743A CN101348930B CN 101348930 B CN101348930 B CN 101348930B CN 2008100717432 A CN2008100717432 A CN 2008100717432A CN 200810071743 A CN200810071743 A CN 200810071743A CN 101348930 B CN101348930 B CN 101348930B
- Authority
- CN
- China
- Prior art keywords
- washing
- content
- zinc
- temperature
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
An electroplating method for aluminum alloy relates to an electroplating method characterized by a technological method, a simple and efficient electroplating method for the aluminum alloy with less pollution, low cost, wide operation range and stable plating coat performance is provided. The electroplating method comprises the steps that an aluminum alloy base material undergoes chemical deoiling, water washing and blow drying and then undergoes oxidation, water washing and blow drying; then the aluminum alloy base material undergoes activation, water washing and blow drying and then undergoes membrane removal and water washing; the aluminum alloy base material which is subjected to membrane removal and water washing undergoes the first neutralization and water washing and then undergoes the first zinc deposition, water washing and zinc deplating; the aluminum alloy base material which is subjected to the first zinc deposition, water washing and zinc deplating undergoes the second zinc deposition, water washing and zinc deplating and then undergoes the second neutralization and water washing; and finally, the aluminum alloy base material after the second neutralization and water washing is plated with watt nickel so as to obtain the an object product.
Description
Technical field
The present invention relates to a kind of is the electro-plating method of feature with the processing method, especially relates to a kind of electro-plating method of aluminium alloy.
Background technology
In various metal output, the aluminium output of China is only second to iron and steel, and China is again the big producing country of electrolytic aluminum in the world.Aluminium and alloy thereof have the specific tenacity height, and heat conduction, good conductivity, and advantages such as plasticity-and easy-formation have been widely used in every profession and trade.Along with the rise in price of market copper, zinc metal, hardware industry is former to be that the product profit of base material has reduced much with zinc, copper, and the price increase of aluminium is slower, more since the density of aluminium and alloy thereof little (density of aluminium is 2.7g/cm
3), to compare with other common metal, the material of same weight can be made about triple component more.A lot of producers are all preparing with aluminum alloy base material Alloy instead of Copper, zinc-base material, but aluminium is amphoteric metal, promptly is dissolved in alkali and is dissolved in acid again, its chemical property is more active, stronger with the avidity of oxygen, in atmosphere, very easily generate layer oxide film on its surface, be the No.1 difficult problem of plating on aluminium alloy.Plating on aluminium alloy must be selected different pretreatment processs with different manufacture method at the different trades mark.The aluminum silicon alloy die casting is easy to cause segregation phenomena, forms rich aluminium Silicon-rich attitude, if the pre-treatment etch is overweight, and then rich aluminium attitude region point seriously corroded; If etch is not enough, then Silicon-rich attitude zone silica removal is clean inadequately, causes foaming, decortication.So far relevant can rarely have report at the electroplating technology of all aluminium and alloy matrix aluminum.
Publication number mainly comprises application and electroplates two steps for the application for a patent for invention of CN1844480 provides a kind of electro-plating method of alloy product, to the application re-plating of aluminium alloy elder generation.Galvanized advanced technologies was electroplated alloy product after first application was adopted in this invention, had cancelled polishing process before the plating, adopted the imitative minute surface car mode of machining to reach appearance requirement; Only the part surface of product is electroplated, reduced greatly than the galvanized material cost of integral body; Coating has been avoided repeatedly baking, greatly reduces condemnation factor; Owing to have special paint, powder to protect when electroplating, in bath solution, paint and can not fade, do not need Continuous pressing device for stereo-pattern paper during application, reduced material cost; The plating qualification rate of product has improved about 10%; Only need move back chromium when strip is reprocessed, return machining turning again, every product strip expense reduces than stepping back entirely to electroplate greatly again.
Publication number provides a kind of electroplating method of alluminium alloy surface for the application for a patent for invention of CN1955343, and this method comprises the steps: (a) sandblast; (b) chemical rightenning; (c) soak zinc; (d) metal refining.The method for electroplating surface that provides with this invention can successfully carry out electroplating surface to the little aluminium alloy battery lid of the big thickness of surface-area, and the coating surface color and luster homogeneous that obtains, non-foaming and do not produce white mist.
Summary of the invention
The objective of the invention is to the deficiency that exists in the existing aluminium alloy electric coating technology, a kind of simple and effective is provided, lowly pollutes, the electro-plating method of low-cost, operating restraint is wide, coating performance is stable aluminium alloy.
The present invention includes following steps:
1) with the aluminum alloy base material electrochemical deoiling, washing dries up;
2) with electrochemical deoiling, washing, the aluminum alloy base material oxidation after drying up, washing dries up;
3) with oxidation, washing, the aluminum alloy base material activation after drying up, washing dries up;
4) will activate washing, the aluminum alloy base material membrane removal after drying up, washing;
5) with membrane removal, the 1st neutralization of the aluminum alloy base material after the washing, washing;
6) with the 1st neutralization, the 1st heavy zinc of the aluminum alloy base material after the washing, zinc is moved back in washing;
7) with the 1st heavy zinc, aluminum alloy base material the 2nd the heavy zinc again behind the zinc is moved back in washing, and zinc is moved back in washing;
8) with the 2nd heavy zinc, washing is moved back the 2nd neutralization of aluminum alloy base material behind the zinc, washing;
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product.
In step 1), electrochemical deoiling preferably adopts except that Oil solvent, remove Oil solvent and adopt sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 30%～50%, the concentration of water glass is 10%～25%, the concentration of yellow soda ash is 10%～20%, and the temperature of oil removing is preferably 55～75 ℃, and the time of oil removing is preferably 2～5min, the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 2) in, the oxidation liquid of oxidation preferably adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is preferably 10%～25%, the content of hydrochloric acid is preferably 0.5%～2%, the content of hydrofluoric acid is preferably 10%～20%, surplus is phosphoric acid, be preferably in the oxidation liquid and add thiocarbamide, the add-on of thiocarbamide is preferably the thiocarbamide that adds 0.5～3g in every liter of oxidation liquid, and the temperature of oxidation is preferably 25～35 ℃, and the time of oxidation is preferably 30～60s, the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 3), the activatory activation solution preferably adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, vitriolic content is preferably 15%～25%, and the content of hydrofluoric acid is preferably 5%～15%, surplus is nitric acid, be preferably in and add hexamethylenetetramine in the activation solution, the add-on of hexamethylenetetramine is preferably the hexamethylenetetramine that adds 0.5～3g in every liter of activation solution, and the activatory time is preferably 20～60s, the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 4), the membrane removal liquid of membrane removal preferably adopts sulfuric acid, hydrogen peroxide and wetting agent, per-cent by volume, vitriolic content is preferably 15%～25%, the content of hydrogen peroxide is preferably 10%～15%, and surplus is deionized water, and the time of membrane removal is preferably 30～90s, the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 5), it is 3%～5% sodium bicarbonate that the 1st neutral solution preferably adopts concentration by mass percentage, and the pH value is preferably 7.5～9.5, and the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 6), the solution of the 1st heavy zinc is preferably sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is preferably 100～200, the content of zinc oxide is preferably 15～30, the content of Seignette salt is preferably 40～80, the content of iron(ic) chloride is preferably 1～2, the content of SODIUMNITRATE is preferably 1～2, the temperature of the 1st heavy zinc is preferably 30～50 ℃, and the time of the 1st heavy zinc is preferably 20～40s, and the deionized water washing is preferably adopted in washing, the temperature of washing is preferably 35～50 ℃, moves back the most handy mass percent concentration of zinc and is 20%～50% salpeter solution and move back zinc.
In step 7), the solution of the 2nd heavy zinc is preferably sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is preferably 100～200, the content of zinc oxide is preferably 15～30, the content of Seignette salt is preferably 40～80, the content of iron(ic) chloride is preferably 1～2, the content of SODIUMNITRATE is preferably 1～2, the temperature of the 2nd heavy zinc is preferably 30～50 ℃, and the time of the 2nd heavy zinc is preferably 10～30s, and the deionized water washing is preferably adopted in washing, the temperature of washing is preferably 35～50 ℃, moves back the most handy mass percent concentration of zinc and is 20%～50% salpeter solution and move back zinc.
In step 8), the 2nd neutral solution preferably is 3%～5% sodium bicarbonate by mass percent concentration, and the pH value is 8.0～9.0, and the deionized water washing is preferably adopted in washing, and the temperature of washing is preferably 35～50 ℃.
In step 9), the plating bath of plating watt nickel is preferably single nickel salt, nickelous chloride, boric acid and sal epsom, press mass ratio, the content of single nickel salt is preferably 150～230, the content of nickelous chloride is preferably 40～60, the content of boric acid is preferably 40～60, and the content of sal epsom is preferably 5～20, and the electric current of plating watt nickel is preferably 5～8A/dm
2, the time of plating watt nickel is preferably 1～8min, and the temperature of plating watt nickel is preferably 40～55 ℃, and the pH value of watt nickel is 5.5～7.5.
Compare with existing aluminium alloy electric electroplating method, the present invention has following outstanding advantage:
1. low silicon, high sial die casting all can be produced qualified product.
2. technology is simple, and is easy to control, and processing range is wide.
3. the product copper facing of handling through present method again, nickel, chromium etc.
4. present method can keep the size of precision part to the just weak corrosion of aluminium base as far as possible.
5. present method can overcome the segregation phenomena of aluminium diecasting basically.
Embodiment
Embodiment 1
1) with the aluminum alloy base material electrochemical deoiling, electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 30%, the concentration of water glass is 20%, and the concentration of yellow soda ash is 20%, and the temperature of oil removing is 60 ℃, the time of oil removing is 3min, adopt the deionized water washing behind the electrochemical deoiling, the temperature of washing is 40 ℃, dries up after the washing.
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, the oxidation liquid of oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is 15%, and the content of hydrochloric acid is 0.8%, and the content of hydrofluoric acid is 15%, the content of phosphoric acid is 69.2%, add thiocarbamide in oxidation liquid, the add-on of thiocarbamide is the thiocarbamide that adds 1g in every liter of oxidation liquid, and the temperature of oxidation is 25 ℃, the time of oxidation is 40s, with the deionized water washing, the temperature of washing is 35 ℃, dries up after the washing after the oxidation.
3) with oxidation, washing, the aluminum alloy base material activation after drying up, the activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, and vitriolic content is 15%, the content of hydrofluoric acid is 10%, the content of nitric acid is 75%, adds hexamethylenetetramine in activation solution, and the add-on of hexamethylenetetramine is the hexamethylenetetramine that adds 1.5g in every liter of activation solution, the activatory time is 40s, the activation back is washed with deionized water, and the temperature of washing is 40 ℃, dries up after the washing.
4) will activate, washing, the aluminum alloy base material membrane removal after drying up, the membrane removal liquid of membrane removal adopts sulfuric acid, hydrogen peroxide and wetting agent, per-cent by volume, vitriolic content is 20%, and the content of hydrogen peroxide is 10%, and the content of deionized water is 70%, the time of membrane removal is 50s, with the deionized water washing, the temperature of washing is 45 ℃, dries up after the washing after the membrane removal.
5) with membrane removal, the aluminum alloy base material after the washing the 1st time neutralization, it is 3% sodium bicarbonate that neutral solution adopts concentration by mass percentage, and pH value is 8, and the neutralization back is washed with deionized water, and the temperature of washing is 40 ℃, dries up after the washing.
6) with the 1st neutralization, the 1st heavy zinc of aluminum alloy base material after the washing, the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 100, the content of zinc oxide is 30, the content of Seignette salt is 60, and the content of iron(ic) chloride is 1.2, and the content of SODIUMNITRATE is 2, the temperature of the 1st heavy zinc is 40 ℃, the time of the 1st heavy zinc is 30s, and with the deionized water washing, the temperature of washing is 50 ℃ behind the 1st the heavy zinc, washing retreats zinc, and moving back zinc is that 30% salpeter solution moves back zinc with mass percent concentration.
7) with the 1st heavy zinc, washing, move back aluminum alloy base material the 2nd the heavy zinc again behind the zinc, the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 100, and the content of zinc oxide is 30, and the content of Seignette salt is 80, the content of iron(ic) chloride is 2, the content of SODIUMNITRATE is that the temperature of 1.5, the 2 heavy zinc is 35 ℃, and the time of the 2nd heavy zinc is 20s, wash with deionized water behind the 2nd the heavy zinc, the temperature of washing is 45 ℃, and washing retreats zinc, and moving back zinc is that 50% salpeter solution moves back zinc with mass percent concentration.
8) with the 2nd heavy zinc, the 2nd neutralization of aluminum alloy base material behind the zinc moved back in washing, and neutral solution is 4% sodium bicarbonate by mass percent concentration, and pH value is 8.0, and the neutralization back is washed with deionized water, and the temperature of washing is 40 ℃.
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product; The plating bath of plating watt nickel is single nickel salt, nickelous chloride, boric acid and sal epsom, presses mass ratio, and the content of single nickel salt is that the content of 200 nickelous chlorides is 50, and the content of boric acid is 55, and the content of sal epsom is 5, and the electric current of plating watt nickel is 8A/dm
2, the time of plating watt nickel is 1min, and the temperature of plating watt nickel is 50 ℃, and the pH value of watt nickel is 6.
Embodiment 2
1) with the aluminum alloy base material electrochemical deoiling, electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 35%, the concentration of water glass is 15%, and the concentration of yellow soda ash is 18%, and the temperature of oil removing is 70 ℃, the time of oil removing is 2min, adopt the deionized water washing behind the electrochemical deoiling, the temperature of washing is 35 ℃, dries up after the washing.
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, the oxidation liquid of oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is 10%, and the content of hydrochloric acid is 1%, and the content of hydrofluoric acid is 13%, the content of phosphoric acid is 76%, add thiocarbamide in oxidation liquid, the add-on of thiocarbamide is the thiocarbamide that adds 2g in every liter of oxidation liquid, and the temperature of oxidation is 28 ℃, the time of oxidation is 45s, with the deionized water washing, the temperature of washing is 40 ℃, dries up after the washing after the oxidation.
3) with oxidation, washing, the aluminum alloy base material activation after drying up, the activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, and vitriolic content is 20%, the content of hydrofluoric acid is 5%, the content of nitric acid is 75%, adds hexamethylenetetramine in activation solution, and the add-on of hexamethylenetetramine is the hexamethylenetetramine that adds 0.5g in every liter of activation solution, the activatory time is 30s, the activation back is washed with deionized water, and the temperature of washing is 50 ℃, dries up after the washing.
4) will activate, washing, aluminum alloy base material membrane removal after drying up, the membrane removal liquid of membrane removal adopts sulfuric acid, hydrogen peroxide and wetting agent, by volume per-cent, vitriolic content is 15%, the content of hydrogen peroxide is 12%, and the content of deionized water is 73%, and the time of membrane removal is 30s, membrane removal is washed with deionized water, and the temperature of washing is 45 ℃.
5) with membrane removal, the aluminum alloy base material after the washing the 1st time neutralization, it is 4% sodium bicarbonate that neutral solution adopts concentration by mass percentage, and pH value is 8.5, and the neutralization back is washed with deionized water, and the temperature of washing is 35 ℃.
6) with the 1st neutralization, the 1st heavy zinc of aluminum alloy base material after the washing, the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 150, the content of zinc oxide is 15, the content of Seignette salt is 40, and the content of iron(ic) chloride is 1, and the content of SODIUMNITRATE is 1.5, the temperature of the 1st heavy zinc is 35 ℃, the time of the 1st heavy zinc is 35s, and with the deionized water washing, the temperature of washing is 40 ℃ behind the 1st the heavy zinc, washing retreats zinc, and moving back zinc is that 20% salpeter solution moves back zinc with mass percent concentration.
7) with the 1st heavy zinc, washing, move back aluminum alloy base material the 2nd the heavy zinc again behind the zinc, the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 120, and the content of zinc oxide is 25, and the content of Seignette salt is 40, the content of iron(ic) chloride is 1.5, the content of SODIUMNITRATE is that the temperature of 1, the 2 heavy zinc is 30 ℃, and the time of the 2nd heavy zinc is 15s, wash with deionized water behind the 2nd the heavy zinc, the temperature of washing is 35 ℃, and washing retreats zinc, and moving back zinc is that 30% salpeter solution moves back zinc with mass percent concentration.
8) with the 2nd heavy zinc, the 2nd neutralization of aluminum alloy base material behind the zinc moved back in washing, and neutral solution is 3.5% sodium bicarbonate by mass percent concentration, and pH value is 8.5, and the neutralization back is washed with deionized water, and the temperature of washing is 35 ℃.
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product; The plating bath of plating watt nickel is single nickel salt, nickelous chloride, boric acid and sal epsom, presses mass ratio, and the content of single nickel salt is 150, and the content of nickelous chloride is 60, and the content of boric acid is 40, and the content of sal epsom is 10, and the electric current of plating watt nickel is 5A/dm
2, the time of plating watt nickel is 7min, and the temperature of plating watt nickel is 405 ℃, and the pH value of watt nickel is 6.5.
Embodiment 3
1) with the aluminum alloy base material electrochemical deoiling, electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 40%, the concentration of water glass is 10%, and the concentration of yellow soda ash is 10%, and the temperature of oil removing is 65 ℃, the time of oil removing is 4min, adopt the deionized water washing behind the electrochemical deoiling, the temperature of washing is 45 ℃, dries up after the washing.
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, the oxidation liquid of oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is 20%, and the content of hydrochloric acid is 1.5%, and the content of hydrofluoric acid is 10%, the content of phosphoric acid is 68.5%, add thiocarbamide in oxidation liquid, the add-on of thiocarbamide is the thiocarbamide that adds 0.5g in every liter of oxidation liquid, and the temperature of oxidation is 32 ℃, the time of oxidation is 30s, adopt the deionized water washing after the oxidation, the temperature of washing is 45 ℃, dries up after the washing.
3) with oxidation, washing, the aluminum alloy base material activation after drying up, the activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, and vitriolic content is 18%, the content of hydrofluoric acid is 8%, the content of nitric acid is 74%, adds hexamethylenetetramine in activation solution, and the add-on of hexamethylenetetramine is the hexamethylenetetramine that adds 1g in every liter of activation solution, the activatory time is 50s, the deionized water washing is adopted in the activation back, and the temperature of washing is 40 ℃, dries up after the washing.
4) will activate, washing, aluminum alloy base material membrane removal after drying up, the membrane removal liquid of membrane removal adopts sulfuric acid, hydrogen peroxide and wetting agent, by volume per-cent, vitriolic content is 18%, the content of hydrogen peroxide is 13%, and the content of deionized water is 79%, and the time of membrane removal is 60s, adopt the deionized water washing after the membrane removal, the temperature of washing is 35 ℃.
5) with membrane removal, the aluminum alloy base material after the washing the 1st time neutralization, it is 3.5% sodium bicarbonate that neutral solution adopts concentration by mass percentage, and pH value is 7.5, and the neutralization back adopts deionized water to wash, and the temperature of washing is 45 ℃.
6) with the 1st neutralization, the 1st heavy zinc of the aluminum alloy base material after the washing, the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 130, and the content of zinc oxide is 20, and the content of Seignette salt is 80, the content of iron(ic) chloride is 1, the content of SODIUMNITRATE is that the temperature of 1.6, the 1 heavy zinc is 30 ℃, and the time of the 1st heavy zinc is 38s, adopt the deionized water washing behind the 1st the heavy zinc, the temperature of washing is 50 ℃.Washing retreats zinc, and moving back zinc is that 35% salpeter solution moves back zinc with mass percent concentration.
7) with the 1st heavy zinc, washing, move back aluminum alloy base material the 2nd the heavy zinc again behind the zinc, the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 180, and the content of zinc oxide is 15, and the content of Seignette salt is 50, the content of iron(ic) chloride is 1, the content of SODIUMNITRATE is that the temperature of 1.3, the 2 heavy zinc is 40 ℃, and the time of the 2nd heavy zinc is 10s, the 2nd time heavy zinc adopts the deionized water washing, the temperature of washing is 45 ℃, and washing retreats zinc, and moving back zinc is that 20% salpeter solution moves back zinc with mass percent concentration.
8) with the 2nd heavy zinc, the 2nd neutralization of aluminum alloy base material behind the zinc moved back in washing, and neutral solution is 4.5% sodium bicarbonate by mass percent concentration, and pH value is 8.3, and the neutralization back adopts deionized water to wash, and the temperature of washing is 40 ℃.
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product; The plating bath of plating watt nickel is single nickel salt, nickelous chloride, boric acid and sal epsom, presses mass ratio, and the content of single nickel salt is 180, and the content of nickelous chloride is 45, and the content of boric acid is 45, and the content of sal epsom is 15, and the electric current of plating watt nickel is 6A/dm
2, the time of plating watt nickel is 8min, and the temperature of plating watt nickel is 45 ℃, and the pH value of watt nickel is 5.5.
Embodiment 4
1) with the aluminum alloy base material electrochemical deoiling, electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 45%, the concentration of water glass is 18%, and the concentration of yellow soda ash is 15%, and the temperature of oil removing is 55 ℃, the time of oil removing is 3.5min, adopt the deionized water washing behind the electrochemical deoiling, the temperature of washing is 40 ℃, dries up after the washing.
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, the oxidation liquid of oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is 20%, and the content of hydrochloric acid is 0.5%, and the content of hydrofluoric acid is 18%, the content of phosphoric acid is 61.5%, add thiocarbamide in oxidation liquid, the add-on of thiocarbamide is the thiocarbamide that adds 2.5g in every liter of oxidation liquid, and the temperature of oxidation is 30 ℃, the time of oxidation is 50s, adopt the deionized water washing after the oxidation, the temperature of washing is 40 ℃, dries up after the washing.
3) with oxidation, washing, the aluminum alloy base material activation after drying up, the activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, and vitriolic content is 23%, the content of hydrofluoric acid is 12%, the content of nitric acid is 65%, adds hexamethylenetetramine in activation solution, and the add-on of hexamethylenetetramine is the hexamethylenetetramine that adds 2g in every liter of activation solution, the activatory time is 20s, the deionized water washing is adopted in the activation back, and the temperature of washing is 45 ℃, dries up after the washing.
4) will activate, washing, aluminum alloy base material membrane removal after drying up, the membrane removal liquid of membrane removal adopts sulfuric acid, hydrogen peroxide and wetting agent, by volume per-cent, vitriolic content is 25%, the content of hydrogen peroxide is 14%, and the content of deionized water is 61%, and the time of membrane removal is 70s, adopt the deionized water washing after the membrane removal, the temperature of washing is 50 ℃.
5) with membrane removal, the aluminum alloy base material after the washing the 1st time neutralization, it is 4.5% sodium bicarbonate that neutral solution adopts concentration by mass percentage, and pH value is 9, and the neutralization back adopts deionized water to wash, and the temperature of washing is 40 ℃.
6) with the 1st neutralization, the 1st heavy zinc of aluminum alloy base material after the washing, the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 200, the content of zinc oxide is 25, the content of Seignette salt is 50, and the content of iron(ic) chloride is 1.6, and the content of SODIUMNITRATE is 2, the temperature of the 1st heavy zinc is 45 ℃, the time of the 1st heavy zinc is 20s, adopts the deionized water washing behind the 1st the heavy zinc, and the temperature of washing is 35 ℃, washing retreats zinc, and moving back zinc is that 40% salpeter solution moves back zinc with mass percent concentration.
7) with the 1st heavy zinc, washing, move back aluminum alloy base material the 2nd the heavy zinc again behind the zinc, the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 200, and the content of zinc oxide is 20, and the content of Seignette salt is 60, the content of iron(ic) chloride is 1.3, the content of SODIUMNITRATE is that the temperature of 1.4, the 2 heavy zinc is 50 ℃, and the time of the 2nd heavy zinc is 25s, adopt the deionized water washing behind the 2nd the heavy zinc, the temperature of washing is 40 ℃, and washing retreats zinc, and moving back zinc is that 40% salpeter solution moves back zinc with mass percent concentration.
8) with the 2nd heavy zinc, the 2nd neutralization of aluminum alloy base material behind the zinc moved back in washing, and neutral solution is 3% sodium bicarbonate by mass percent concentration, and pH value is 8.5, and the neutralization back adopts deionized water to wash, and the temperature of washing is 40 ℃.
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product; The plating bath of plating watt nickel is single nickel salt, nickelous chloride, boric acid and sal epsom, presses mass ratio, and the content of single nickel salt is 210, and the content of nickelous chloride is 40, and the content of boric acid is 60, and the content of sal epsom is 18, and the electric current of plating watt nickel is 7A/dm
2, the time of plating watt nickel is 5min, and the temperature of plating watt nickel is 52 ℃, and the pH value of watt nickel is 7.5.
Embodiment 5
1) with the aluminum alloy base material electrochemical deoiling, electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 50%, the concentration 25% of water glass, the concentration of yellow soda ash are 20%, and the temperature of oil removing is 75 ℃, the time of oil removing is 5min, adopt the deionized water washing behind the electrochemical deoiling, the temperature of washing is 50 ℃, dries up after the washing.
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, the oxidation liquid of oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, per-cent by volume, vitriolic content is 25%, and the content of hydrochloric acid is 2%, and the content of hydrofluoric acid is 20%, the content of phosphoric acid is 53%, add thiocarbamide in oxidation liquid, the add-on of thiocarbamide is the thiocarbamide that adds 3g in every liter of oxidation liquid, and the temperature of oxidation is 35 ℃, the time of oxidation is 60s, adopt the deionized water washing after the oxidation, the temperature of washing is 45 ℃, dries up after the washing.
3) with oxidation, washing, the aluminum alloy base material activation after drying up, the activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, and vitriolic content is 25%, the content of hydrofluoric acid is 15%, the content of nitric acid is 60%, adds hexamethylenetetramine in activation solution, and the add-on of hexamethylenetetramine is the hexamethylenetetramine that adds 2g in every liter of activation solution, the activatory time is 60s, the deionized water washing is adopted in the activation back, and the temperature of washing is 50 ℃, dries up after the washing.
4) will activate, washing, aluminum alloy base material membrane removal after drying up, the membrane removal liquid of membrane removal adopts sulfuric acid, hydrogen peroxide and wetting agent, by volume per-cent, vitriolic content is 22%, the content of hydrogen peroxide is 15%, and the content of deionized water is 63%, and the time of membrane removal is 90s, adopt the deionized water washing after the membrane removal, the temperature of washing is 35 ℃.
5) with membrane removal, the aluminum alloy base material after the washing the 1st time neutralization, it is 5% sodium bicarbonate that neutral solution adopts concentration by mass percentage, and pH value is 9.5, and the neutralization back adopts deionized water to wash, and the temperature of washing is 40 ℃.
6) with the 1st neutralization, the 1st heavy zinc of aluminum alloy base material after the washing, the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 170, the content of zinc oxide is 28, the content of Seignette salt is 65, and the content of iron(ic) chloride is 2, and the content of SODIUMNITRATE is 1, the temperature of the 1st heavy zinc is 50 ℃, the time of the 1st heavy zinc is 40s, adopts the deionized water washing behind the 1st the heavy zinc, and the temperature of washing is 50 ℃, washing retreats zinc, and moving back zinc is that 50% salpeter solution moves back zinc with mass percent concentration.
7) with the 1st heavy zinc, aluminum alloy base material the 2nd the heavy zinc again behind the zinc is moved back in washing, and the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 150, and the content of zinc oxide is 30, and the content of Seignette salt is 65, the content of iron(ic) chloride is 1.6, the content of SODIUMNITRATE is that the temperature of 2, the 2 heavy zinc is 45 ℃, and the time of the 2nd heavy zinc is 30s, adopt the deionized water washing behind the 2nd the heavy zinc, the temperature of washing is 50 ℃, and washing retreats zinc, and moving back zinc is 50 with mass percent concentration, 30,20%, 40,35% salpeter solution moves back zinc.
8) with the 2nd heavy zinc, the 2nd neutralization of aluminum alloy base material behind the zinc moved back in washing, and neutral solution is 5% sodium bicarbonate by mass percent concentration, and pH value is 9.0, and the neutralization back adopts deionized water to wash, and the temperature of washing is 50 ℃.
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product; The plating bath of plating watt nickel is single nickel salt, nickelous chloride, boric acid and sal epsom, presses mass ratio, and the content of single nickel salt is 230, and the content of nickelous chloride is 55, and the content of boric acid is 50, and the content of sal epsom is 20, and the electric current of plating watt nickel is 6.5A/dm
2, the time of plating watt nickel is 4min, and the temperature of plating watt nickel is 55 ℃, and the pH value of watt nickel is 7.
Claims (7)
1. the electro-plating method of aluminium alloy is characterized in that may further comprise the steps:
1) with the aluminum alloy base material electrochemical deoiling, washing dries up;
2) with electrochemical deoiling, washing, aluminum alloy base material oxidation after drying up, washing, dry up, the oxidation liquid of described oxidation adopts phosphoric acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and thiocarbamide, by volume per-cent, vitriolic content is 10%～25%, the content of hydrochloric acid is 0.5%～2%, and the content of hydrofluoric acid is 10%～20%, and surplus is phosphoric acid, in oxidation liquid, add thiocarbamide, the add-on of thiocarbamide is for adding the thiocarbamide of 0.5～3g in every liter of oxidation liquid, the temperature of oxidation is 25～35 ℃, and the time of oxidation is 30～60s, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃;
3) with oxidation, washing, aluminum alloy base material activation after drying up, washing, dry up, described activatory activation solution adopts nitric acid, sulfuric acid and hydrofluoric acid, per-cent by volume, vitriolic content is 15%～25%, the content of hydrofluoric acid is 5%～15%, surplus is nitric acid, add hexamethylenetetramine in activation solution, the add-on of hexamethylenetetramine is for adding the hexamethylenetetramine of 0.5～3g in every liter of activation solution, and the activatory time is 20～60s, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃;
4) will activate, washing, the aluminum alloy base material membrane removal after drying up, washing, the membrane removal liquid of described membrane removal adopts sulfuric acid, hydrogen peroxide and deionized water, per-cent by volume, vitriolic content is 15%～25%, the content of hydrogen peroxide is 10%～15%, surplus is deionized water, the time of membrane removal is 30～90s, and the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃;
5) with membrane removal, the 1st neutralization of the aluminum alloy base material after the washing, washing;
6) with the 1st neutralization, the 1st heavy zinc of the aluminum alloy base material after the washing, zinc is moved back in washing;
7) with the 1st heavy zinc, aluminum alloy base material the 2nd the heavy zinc again behind the zinc is moved back in washing, and zinc is moved back in washing;
8) with the 2nd heavy zinc, washing is moved back the 2nd neutralization of aluminum alloy base material behind the zinc, washing;
9) with the 2nd neutralization, the aluminum alloy base material plating watt nickel after the washing promptly gets target product.
2. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 1) electrochemical deoiling adopts and removes Oil solvent, removes Oil solvent and adopts sodium phosphate, water glass and yellow soda ash, by mass percentage, the concentration of sodium phosphate is 30%～50%, and the concentration of water glass is 10%～25%, and the concentration of yellow soda ash is 10%～20%, the temperature of oil removing is 55～75 ℃, the time of oil removing is 2～5min, and the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃.
3. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 5) it is 3%～5% sodium bicarbonate that the 1st neutral solution adopts concentration by mass percentage, the pH value is 7.5～9.5, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃.
4. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 6), the solution of the 1st heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 100～200, the content of zinc oxide is 15～30, the content of Seignette salt is 40～80, the content of iron(ic) chloride is 1～2, and the content of SODIUMNITRATE is that the temperature of the 1～2,1st heavy zinc is 30～50 ℃, the time of the 1st heavy zinc is 20～40s, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃, and moving back zinc is that 20%～50% salpeter solution moves back zinc with mass percent concentration.
5. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 7), the solution of the 2nd heavy zinc is sodium hydroxide, zinc oxide, Seignette salt, iron(ic) chloride and SODIUMNITRATE, press mass ratio, the content of sodium hydroxide is 100～200, the content of zinc oxide is 15～30, the content of Seignette salt is 40～80, the content of iron(ic) chloride is 1～2, and the content of SODIUMNITRATE is that the temperature of the 1～2,2nd heavy zinc is 30～50 ℃, the time of the 2nd heavy zinc is 10～30s, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃, and moving back zinc is that 20%～50% salpeter solution moves back zinc with mass percent concentration.
6. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 8) the 2nd neutral solution is 3%～5% sodium bicarbonate by mass percent concentration, the pH value is 8.0～9.0, the deionized water washing is adopted in washing, and the temperature of washing is 35～50 ℃.
7. the electro-plating method of aluminium alloy as claimed in claim 1, it is characterized in that in step 9), the plating bath of plating watt nickel is preferably single nickel salt, nickelous chloride, boric acid and sal epsom, press mass ratio, the content of single nickel salt is 150～230, and the content of nickelous chloride is 40～60, and the content of boric acid is 40～60, the content of sal epsom is 5～20, and the electric current of plating watt nickel is 5～8A/dm
2, the time of plating watt nickel is 1～8min, and the temperature of plating watt nickel is 40～55 ℃, and the pH value of watt nickel is 5.5～7.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100717432A CN101348930B (en) | 2008-09-10 | 2008-09-10 | Electroplating method of aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100717432A CN101348930B (en) | 2008-09-10 | 2008-09-10 | Electroplating method of aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101348930A CN101348930A (en) | 2009-01-21 |
| CN101348930B true CN101348930B (en) | 2010-06-16 |
Family
ID=40267894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100717432A Expired - Fee Related CN101348930B (en) | 2008-09-10 | 2008-09-10 | Electroplating method of aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101348930B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022203A (en) * | 2012-12-04 | 2013-04-03 | 常州大学 | Photovoltaic solder strip and preparation method thereof |
| CN105063703B (en) * | 2015-03-13 | 2017-10-31 | 广东欧珀移动通信有限公司 | The surface treatment method and pack alloy product of pack alloy part |
| CN105063704B (en) * | 2015-07-31 | 2017-07-25 | 广东欧珀移动通信有限公司 | A kind of pack alloy electroplating pretreatment process and electronic device |
| CN105568079A (en) * | 2016-01-25 | 2016-05-11 | 张颖 | Transition layer electroplating liquid for die-cast high-strength aluminum alloy |
| CN106521590A (en) * | 2017-01-10 | 2017-03-22 | 深圳市常兴技术股份有限公司 | Aluminum alloy blank and diamond composite electroplating process |
| CN107254699A (en) * | 2017-06-08 | 2017-10-17 | 合锋卫浴（厦门）有限公司 | A kind of method of plating on aluminium alloy dust cloud nickel composite deposite |
| CN114058995B (en) * | 2021-11-19 | 2022-08-16 | 江苏华旺新材料有限公司 | Copper-aluminum composite sheet and composite process thereof |
-
2008
- 2008-09-10 CN CN2008100717432A patent/CN101348930B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101348930A (en) | 2009-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101348930B (en) | Electroplating method of aluminum alloy | |
| Wu et al. | Progress of electroplating and electroless plating on magnesium alloy | |
| CN101280445B (en) | Electroplating process for surface of magnesium alloy motorcycle hub | |
| CN102691081B (en) | A kind of plating silver solution and electro-plating method | |
| Zhang et al. | Studies on influence of zinc immersion and fluoride on nickel electroplating on magnesium alloy AZ91D | |
| CA2175952A1 (en) | Deposition of chromium oxides from a trivalent chromium solution | |
| CN103469267B (en) | A kind of processing method of surface-treated electro-deposited copper foil and the Copper Foil of process thereof | |
| CN103924245A (en) | Chemical stripping solution and stripping method | |
| CN105297011A (en) | Method for preparing super-hydrophobic composite film layer on surface of magnesium alloy | |
| JP2005538249A (en) | Surface treatment of magnesium and magnesium alloys | |
| CN103882492A (en) | Chemical plating posttreatment method of metallic matrix | |
| CN108668452A (en) | A kind of PCB fine-lines electrolytic etching recycles correlation technology with copper | |
| CN103060865A (en) | Zinc alloy composite electroplating method for protecting at metal surface | |
| CN109183087A (en) | A method of the nickel plating on copper and copper alloy coiled material | |
| CN108060442A (en) | A kind of method that Copper-Aluminum compound row surface prepares zinc-copper composite deposite | |
| CN103272749B (en) | Surface treatment method of zinc alloy die casting | |
| CN103556196A (en) | Stainless steel imitated surface treatment method for zinc alloy part | |
| Lei et al. | Successful cyanide free plating protocols on magnesium alloys | |
| CN101397688A (en) | Surface treating method of zinc alloy products | |
| CN103215574B (en) | Magnesium-alloy chemical nickel plating solution and nickel plating process thereof | |
| CN104005066A (en) | Magnesium alloy surface super hydrophobic membrane layer and preparation method and application thereof | |
| CN101265601A (en) | Aluminium alloy surface electric plating iron machining process | |
| CN103757642B (en) | A kind of zinc alloy diecasting surface treatment method | |
| CN104233416A (en) | Method for electroplating zinc-nickel coating on magnesium alloy electroplate surface | |
| CN109023460A (en) | A kind of method of magnesium lithium alloy electroplating surface zinc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20140910 |
|
| EXPY | Termination of patent right or utility model |