Monday, November 13, 2017

Gilding Process

Gold Plating Can do by Electroplating Process or Gilding Process:

Gilding is actually a process to coated of object with gold leaf. While gold leaf is a thin sheet of gold sheet that usually use for gilding process. The quality of gold leaf also can be vary depend on the product sold that describe in karats and shades. So gilding process is actually gold plating, covering the surface of object with gold.

The process of gold plating can just by stick the gold leaf on the object or by electroplating that use electric current. Gilding process is a number technique of decorative finished applying in some object like wood, metal or other object. The process of gilding should by experience persons, this process include hand application and gluing. After the gold leaf being stick on the object, the next process can be burnishing, water gilding and oil gilding that is used by wood carvers and gilders. Experience person know what temperature can be applied on this process because if too hot, burnishing can make the surface of gold leaf can change into red color.

Gilding Process is use many kind of tools that like work in detail ornament:

gilding tools 1
Gilding Equipment 1

gilding tools 2
Gilding Equipment 2

Some example of Gilding products and their application:

gilding process
Gilding Process

gilding application
Gilding Application

gilding product
Gilding Product
Find other kind of gold plating process:

Tuesday, November 7, 2017

Power for electroplating

Electroplating need DC power source that can supply DC electric current in stable flow. For industrial company this may can supply by high power system that already make with perfect electric circuit, so DC electric current is not a problem anymore. For small uses like home industry this can be problem because their electric circuit sometimes is not perfect so that the current flow is not stable, in our country this always problem because electric source that supply from government still don’t stable the range is too far for example from 170 volt to 210 volt, this can make difficult to arrange even use current controller.

The quality of deposit coated metal such as in chrome plating is very dependent on the electric stability. The brightness and the regularity of thickness can be not even if the electric source is not stable flow. For small part may can result in evenly coated thickness but for wide part this can be problem if electric current flow is not high enough or less from the limitation. The DC current electric source should be able to supply electric current 5 A per sq ft of object to coat by chrome ion. If the electric current up and down to wide span, this can be difficult to arrange.

So the problem on chrome plating itself is not just from the preparation of base metal such as electropolishing but also from the DC current electric flow also should be stable. If any certain disturbance while running process the chromium deposit can be very brittle or too soft, out of the standard quality.

Sunday, November 5, 2017

The usage of chrome electroplating

Chrome electroplating is a coating process on the surface of metal use chromic acid or chrome substance use electrolysis method. Chrome electroplating is more prefer to be applied in any metal because some reason like, electroplating product have good looking, chrome plating product stand to corrode better than other substance coated, chrome plating can be plated easily by using low electric current so that this process can use efficient electric power.

Chrome electroplating can be work with efficient chemicals usage because the thickness only in micron so that for a wide m2 area only use small chromic acid is enough. Different with electroless plating, plating area can’t wide area with use small substance, and the coating substance can’t stick evenly in all surface. Chrome electroplating can plated in wide area with homogen thickness and similar quality of chrome layer.

Process of electroplating should be doing in several step in order can get high quality product. These are the step of chrome electroplating should be done:

Friday, November 3, 2017

Spray Chrome Paint Uses

Spray chrome paint currently become advertising widely in the internet, after most people already knows there is chrome plating generally use by electric current. Spray chrome paint product over more easier on covering surface with chrome. Technically this method possible to do as long as we can dilute of chrome ion into the kind of chemicals. But the shinning of chrome ion will not merge if this is only use a usual chemical like chromic acid, because chromic acid itself have red color. It’s look impossible for me to understand this can work. But you can try to buy chrome paint product in the market, even this product already widely sell online.

Different kind if we use silver coating paint or silver-like coating, actually not really silver but use a dye or metal with silver-like color to dissolve in any solvent. If that is really silver, as logically it is possible have a shiny color because silver naturally already have shiny color, or use brass metal as the main component in the solvent, this is also possible because brass also have shiny color metal. For silver paint also possible of using zinc metal as a main element in the solvent, because zinc already use just like that, dipped metal inside hot melted zinc metal and you will get zinc coated surface with a shiny color (often called with galvanized steel). Other option can be use an alloy this is a mixed metal and dilute into the solvent.

Spray chrome paint use is very simple, as the guide in the can of this product, just clean the surface with soap to clean dirt in the surface, and may need to use thinner if the surface contain too thick of oily dirt. Dried the surface with air pressure gun, and soon you can use spray paint on the surface.

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Monday, October 30, 2017

Nickel Plating Bath Composition

A nickel electroplating bath for obtaining a satin-finish which comprises a solution of acidic continuous phase nickel salt solution, an alcohol soluble poly-amide resin and polishing agent dissolved in bath. The polyamide resin is a member selected from the group consisting of a co-polymer of dimer acid and an aliphatic amine, a co-polymerized nylon and a modified nylon. The electroplating bath preferably contains a cation surface active agent selected from the group consisting of an aliphatic and/or aromatic Quaternary ammonium salt and an aliphatic and/or aromatic fluorosulfonylamine Quaternary ammonium salt. The use of the electroplating bath provides a means for obtaining a uniform satin-finish nickel plating surface on the material plated.

Acidic nickel electroplating bath composition obtaining a uniform satin finish metal plate surface on the material plate surface as below:
  1. Nickel 25 to 170 gm/lt
  2. Polyamide resin dissolved in low molecular weight and alcohol have 1 to 3 carbon atom: 1 – 10,000 ppm
  3. Polishing agent: 0.1 to 40 gm/lt
Nickel is dissolved and forms a continuous aqueous phase solution and poly-amide resin is dispersed in aqueous phase to form a stable emulsion.