POWDER PAINTING YAMARCO WHEELS | By #CdRas
The part, already cleaned of grease, is immersed in a tank containing chromic acid solution (20 – 30 %) at about 80ºC. This “dissolves” one of the components of these plastics, generating micropores on the surface of the part.
After the part is washed with water, it is immersed in a 1% palladium chloride solution at 70ºC to activate the plastic, that is, to make it electrically conductive, and then it is dried by means of hot air dryers.
There are methods in which copper sulfate is used in the presence of sodium or potassium cyanide at 32-38ºC with currents of 2A per dm2, but it requires special care due to the toxicity of the gases emitted.
and chromic dichromate. Although some is lost by “carryover”, its concentration should not be allowed to become excessive, since trivalent chromium compounds have the effect of narrowing the limits of the working conditions of the bright chrome plating solution and decreasing its conductivity. On the other hand, a moderate concentration of trivalent chromium seems to increase somewhat the penetrating power of the solution.
Chrome Gold Paint
Super Color Metallic is an aerosol paint developed with state-of-the-art technology. It is ideal for more sophisticated works with precious metal finishes. Gold, silver and copper are just some of the tones that transform pieces of wood, plaster, iron, expanded polystyrene and paper into true works of art.
To clean the nozzle, turn the can upside down and squeeze the valve until only gas is expelled from the can. If the nozzle becomes clogged, remove it and dip it in thinner or acetone. If necessary, unclog the nozzle orifice with a needle.
HOW TO CHROME PLATING METALS | PROCESS
Painting on chrome requires following a specific procedure and using a specific technique. Chromium plating has a highly polished and pore-free surface, so paints usually cannot adhere to it. To paint on chrome with good results, at Lecker’s we propose a practical and easy to apply alternative, either for interior or exterior.
The first thing to do is to apply PRIMER 1K METALS primer. This primer is completely transparent and fast drying. By applying a thin layer on the chrome plating we obtain an exceptional adhesion. Once the primer has dried, the finish can be applied. The PRIMER 1k METALS allows you to use any type of finishing enamel with the total security that we will obtain a correct adherence, avoiding that the paint jumps and comes off.
Then we proceed to apply a thin coat of Primer 1k Metales. The product is ready to use and is applied as it comes in the package without the need to dilute. We will let dry between 10 and 15 minutes. We will repeat the operation applying a second coat.
How to paint gold or metallic color. Oil and acrylic.
Advantages over other processes are also good corrosion resistance, minimized microroughness, improved fatigue resistance and reduced coefficient of friction. The treated surfaces also impress with low product adhesion and reduced deposit build-up. They can therefore be cleaned very easily and quickly. The field of application ranges from the chemical and pharmaceutical industry through architecture and construction to environmental technology and the electronics industry.
Pickling is a process that chemically removes all contamination from stainless steel surfaces, i.e. by acid. The result is a metallically pure surface of the metal spring. Only then can the passive protective layer be formed in the next step.
Phosphating, also known as bonding, atramentizing or Parkerizing, is one of the most common process technologies in the surface treatment of steel springs. Here, a conversion layer of firmly bonded metal phosphates is formed by chemical reactions between the metal surface and a phosphate solution. These surfaces are of interest for applications where temporary corrosion protection, good adhesion for subsequent painting, friction and wear reduction or electrical insulation are valued. Phosphating is also very economical and cost-effective.