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Steel and zinc based alloy vacuum ion chromium plating technology capable of substituting current chromium electroplating technologies

A technology of electrochrome plating and ion plating, applied in ion implantation plating, vacuum evaporation plating, metal material coating technology, etc., can solve the problems of acid, alkali and salt polluting the environment, easily causing skin cancer, affecting adhesion, etc., to achieve The effect of eradicating environmental pollution and harm to human body

Inactive Publication Date: 2012-11-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the current electroplating process are: the electroplating process uses acid-base salts to seriously pollute the environment; the electroplating process produces toxic substances such as hexavalent chromium, and the use of cyanide is harmful to the human body; there are cadmium and nickel elements in the electroplating layer, which can easily cause skin cancer; There is no transition layer between the electroplating film and the workpiece, which affects the adhesion

Method used

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  • Steel and zinc based alloy vacuum ion chromium plating technology capable of substituting current chromium electroplating technologies
  • Steel and zinc based alloy vacuum ion chromium plating technology capable of substituting current chromium electroplating technologies
  • Steel and zinc based alloy vacuum ion chromium plating technology capable of substituting current chromium electroplating technologies

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Effect test

Embodiment 1

[0039] Embodiment 1. The iron and steel workpiece vacuum ion chromium plating process replaces the existing electroplating decorative chromium process and adopts cathodic arc plating-magnetron sputtering-electron beam ion plating technology such as figure 1 As shown, the vacuum ion chromium plating process for iron and steel workpieces is used to replace the current electroplating decorative chromium process.

[0040] Workpiece name: hardware, window frame, workpiece material: ordinary carbon steel

[0041] Step 1: The workpiece 6 is put into the vacuum chamber 1 after being polished, cleaned and dried.

[0042] Step 2: The vacuum chamber 1 is evacuated 5, and the vacuum degree reaches 3X10-3Pa.

[0043] Step 3: start the thermal heating device 8, and the temperature of the workpiece 6 is less than 200°C.

[0044] Step 4: The workpiece 6 is sputtered and cleaned, the ion source is fed with argon (Ar) 11, the vacuum degree is adjusted to 5Pa, the workpiece 6 is turned on with...

Embodiment 2

[0061] Embodiment 2. Zinc-based alloy vacuum ion plating cobalt process replaces existing electroplating decorative chromium process, adopts cathodic arc plating-magnetron sputtering-electron beam ion plating technology such as figure 1 As shown, the zinc-based alloy vacuum ion cobalt plating process replaces the current electroplating decorative chromium process.

[0062] Workpiece name: door and window handles, faucets, bathroom appliances, material: zinc-based alloy

[0063] Step 1: The workpiece 6 is put into the vacuum chamber 1 after polishing, cleaning and drying.

[0064] Step 2: The vacuum chamber 1 is evacuated 5, and the vacuum degree reaches 3X10-3Pa.

[0065] Step 3: The workpiece 6 starts the heating device 8, and the temperature of the workpiece 6 is <90°C.

[0066] Step 4: The workpiece 6 is sputtered and cleaned, the ion source is fed with argon (Ar) 11, the vacuum degree is adjusted to 2Pa, the workpiece 6 is turned on to charge the negative bias power supp...

Embodiment 3

[0083] Embodiment 3. Iron and steel workpiece vacuum ion plating ultra-hard chromium coating process replaces existing electroplating hard chromium process,

[0084] Cathodic arc plating-magnetron sputtering-electron beam ion plating technology such as figure 1 As shown, the vacuum ion plating of chromium nitride and ion chromium plating composite coating process on iron and steel workpieces replaces the current electroplating hard chromium process,

[0085] Workpiece name: wrench, machine tool thimble, workpiece material: 45

[0086] Step 1: The workpiece 6 is put into the vacuum chamber 1 after being polished and ultrasonically cleaned and dried.

[0087] Step 2: The vacuum chamber 1 is evacuated 5, and the vacuum degree reaches 2X10-3Pa.

[0088] Step 3: Start the heating device 8, and the temperature of the workpiece 6 is less than 195°C.

[0089] Step 4: The workpiece 6 is sputtered and cleaned, the ion source is fed with argon (Ar) 11, the vacuum degree is adjusted to...

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Abstract

A steel and zinc based alloy vacuum ion chromium plating technology capable of substituting current chromium electroplating technologies belongs to the field of material surface technologies. The ion chromium plating technology is characterized in that the ion chromium plating technology substitutes current chromium electroplate decoration technologies, and ion plated superhard chromium substitutes electroplated hard chromium. A pulse negative bias which has a voltage being 100-2000V is applied between a workpiece and a vacuum chamber, a transition layer having a thickness being 0.5-4mum is between a coating and the workpiece to improve the adhesiveness of the coating, and iron plated zirconium or chromium nitride substitutes an electroplated nickel coating in the current chromium electroplate decoration technologies; the ion plated chromium or cobalt substitutes an electroplated chromium coating in the chromium electroplate decoration technologies; and the ion plated superhard chromium substitutes the electroplated hard chromium, and an ion plated metal compound brightener, such as alumina or silica, enables the brightness of the ion coating to be improved. The ion chromium plating technology has the following effects and advantages: the coating does not have an Ni element, and is harmless to human bodies; three wastes which are not discharged are not treated; and the coating has the advantages of good adhesiveness, good compactness, strong corrosion resistance, high hardness and good abrasion resistance.

Description

technical field [0001] The invention belongs to the technical field of material surfaces, and relates to a process method of replacing the current electroplating decorative chromium with vacuum ion plating process chromium and ion plating superhard chromium instead of electroplating hard chromium. Background technique [0002] The current electroplating decorative chromium and electroplating hard chrome processes are widely used in the anti-atmospheric corrosion decorative coating and wear-resistant coating on the surface of materials. The current electroplating chrome process method: [0003] Hanger-Chemical Degreasing-Washing-Electrochemical Degreasing-Washing-Acid Activation-Copper Plating with Cyanide Primer-Washing-Bright Nickel Plating-Washing-Chrome Plating-Washing-Drying-Inspection -Packaging and storage. [0004] The disadvantages of the current electroplating process are: the electroplating process uses acid-base salts to seriously pollute the environment; the el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/32
Inventor 董闯陈宝清牟宗信王清羌建兵王英敏
Owner DALIAN UNIV OF TECH
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