Hard chrome plating equipment

Hard chrome plating equipment technical process:

Hard chrome plating equipment

Hard chrome plating equipment

A.Introduction of hard chrome plating equipment technical process:

Hard chrome plating equipment used for plating a layer of thick chrome film on various kinds of base material, which its thickness normally above 20μm, by mean of this, to make use of chromium character to improve plating parts hardness, wear resistance, thermostability, anti-corrosion performance.

Hard chrome plating equipment technical features:
1)Cathode current efficiency up to 50%~65%, deposition speed very fast;
2)High hardness plating layer (900~1200 HV), present uniform and intensive net-type fissure, the wear resistance performance is very good;
3)Plating solution disperse capacity good, plating film layer uniform, and not easy to have rough tumour phenomenon, the appearance of chrome layer bright and smooth;
4)Bonding force between chrome plating layer and base material very strong, while pre-plating treatment processes is similar with traditional electroplating technical processes, but operation simple than traditional one;
5)Allowed range of trivalent chromium content is more wide, normally, there is no need to stop production to deal with trivalent chromium;
6)There is no fluoride, no rare earth element in electro plating solution, and no low current area corrosion to plating parts.

Hard chrome plating equipment has a widely application, such as: mechanical mould, cylinder piston, measure tools, cutting and pulling tools etc.. Its another usage is to repair wear down parts and over cutting parts, to make these parts can be used repeat.

B. Hard chrome plating equipment flow:

Examine→Degreaing→Water rinse→Antipole→hard chrome plating→Water rinse→Examine

C. Hard chrome electroplating equipment technical parameter:

1, CrO3: 220~250g/l;
2, SO42-: 2.2~2.5g/l;
3, Cr3+: 2~5g/l;
4, Plating solution temp: 50~55℃;
5, Cathode current density: 30~60A/dm2.

D. Hard chrome plating equipment operation regulations:

1, Examine plating parts size before plating, machining surface conditions, to calculate electro plating time according to electroplating layer thickness.
2, Control well for plating solution working condition, observe frequently, watch temperature changing, plating solution liquid level changing, operation carefully, and fill in the operation record. Add chemical solution according to testing result, correction the electroplating solution.
3, After plating to check plating layer quality, dimensions, and clean up.
4, The working site shall be cleaned and cleared, tools and devices shall be placed properly.

ABS plastic chrome plating machine

ABS plastic chrome plating machine technical processes:

ABS chrome plating machine

ABS plastic chrome plating machine Pre-treatment:

Degreasing→(Acid deoiling) hydrophilic→Coarsening →Neutralization→(10% hydrochloric acid)presoak→Palladium→
Activation (dispergation)→(Reduction nickel) Chemical nickel

ABS plastic chrome plating machine After treatment:

(5% hydrochloric acid) Activation→(Pre- copper plating) pyrophosphate copper→(5% sulfuric acid) Activation→
Acid copper→Half brightness nickel→Brightness nickel→Nickel seal→Presoak→Chrome plating→Baking

ABS Plastic plating chrome machine cautions before plating:

1, (Alkaline) degreasing:

Main component constituted by alkali metal compound, such as: sodium hydroxide, sodium carbonate,
potassium carbonate, potassium phosphate etc. Its role is to remove grease or release agent on ABS.

2, (Acid deoiling) hydrophilic:

left;”>The main components are sulfuric acid and hydrophilic agent.The function of sulfuric acid is
neutralization and degreasing; hydrophilic agent is used to provide ABS surface adsorption of hydrophilic
groups, which is beneficial to Coarsening step later.

3, Coarsening:

The major components as chromic acid and sulfuric acid, wetting agents and anti-fogging agents are auxiliary agents. Chromic acid and sulfuric acid which is to get rid of B component from ABS surface to form many tiny pits in favor of Palladium and nickel plating process later; Coarsening effect will direct impact whether can plating layer and binding force between plating coating layer and ABS material body. Wetting agents action is for more effective erosion to ABS material surface, then improve degree ofroughening; antifogging agent role is to prevent the generation of chrome fog, and the environmental impact of the leak-plated of black spots.

Nickel plating machine

Nickel plating machine

Nickel plating machine: Mainly used for decorative protective coatings. For iron matrix, nickel plating coating film is cathodic type coating. Because of its high porosity, so shall use copper layer as underlying or adopt multi-layer nickel plating. Nickel plating coating layer not bright from the ordinary plating solution, but easy to polish. Using Ssome brightener […]

Anodizing machine

Anodizing machine

Anodizing machine for aluminum:

Characteristic of pure aluminum:

Al is amphoteric metal, which is chemically active and easy to generate oxide in air, while aluminum oxide can inhibit further oxidation, the higher purity of aluminum, the more uniform film, and more excellent corrosion resistance. Easy to act with reducing agent. But anti-corrosion to oxidizing agent. Aluminum is passive state to concentrated nitric acid.

A Definition:

Aluminum in the ambient atmosphere will produce a layer of oxide film. Aluminum substrate attached to anode current to generate hard and transparent surface layer in electrolyte, this electro chemical reaction is called as “anodizing”, which is finished by anodizing machine.

B Features of anodizing:

Transparent, close to the glass; Insulation, anti-static; Changeable color appearance; Fully integrated with the aluminum surface and does not peel off. NOTE: Passivation is made for stainless steel surface treatment, as the same purpose to increase the corrosion resistance.

C Anodizing machine application functions:

Increase corrosion resistance; Increase abrasion resistance; Improve the adhesion of the substrate and coating; Provide an insulating surface; Insulation; Protection polishing surface and machined surface; Improve appearance. Note: After the oxidation can be painted, but generally do not suggest to do this process, because it is uneconomical. Usually to realize color when oxidation, basically except white, other colors are available by this deal, and it will not affect the film thickness (or the thickness of the substrate). These are functions of anodizing machine.

D Anodizing machine technical processes:

Anodizing machine

Anodizing machine

In briefly, anodizing machine divided into 2 big steps: Pre-treatment and After treatment.

Pre-treatment: Include degreasing, etching, chemical polishing, etc. Oxidation: once the surface is prepared, the oxidation film is built. After treatment: porous anodizing film can be colored in this stage. Sealing.