Product Hard Chrome Coating

Hard Chrome Coating into Metal

- Chromium plating is the method of coating metal chromium on the surface of plating.

Here, the thickness of the chromium plating layer varies from 0.1 um to 1000 um.

The method of hard chromium plating, also known as industrial chromium plating



or Chromium coating for machine parts in the manufacturing industry.

Chrome plating of machine parts, rolling shafts, Hydraulic cylinder, High surface hardness, anti-friction.

Application Chrome plating:
Used to reduce friction, improve durability through lubrication and wear resistance in general,

as well as fine cracks on the hard chromium plating to keep oil, and corrosion resistance in the air, (especially against oxidation, this is the most prominent feature of the chromium coating).

And another feature with the hard chrome plating is to compensate for the excessive wear and tear during work such as: Ball, Bearing, Shaft.

Specialized Chromium Plating:
Chromium plating is very hard, with a hardness of 65 to 69 HRC (based on hardness of the metal). The thicker hard chromium plating thickness is thicker than the decorative chrome plating, with standard thicknesses applied to the mechanical sector ranging from 0.2 to 0.6 mm (200 um - 600 um), but also The Hard Chrome Coating Thickness can be increased for workpieces in harsh abrasive environments where, in such cases, the Hard Chromium Coating thickness can be as high as 1 mm (1000 um) or thicker. to meet the required requirements.

But with the coating's thickness too high, it causes inactive areas in hard chromium plating treatment, such as formation of lumps, tumors, or rough spots on the coating. So usually after thick chrome plating they are often grinded down to meet the size requirements as well as improve the aesthetics of the coating.

Thickening conditions to magnify the surface defects of the metal such as pitting lintel, scratches. Because the nature of the coating does not have the effect of coating as Nickel or Copper.

Chromium Plating:
Hard chrome plating depends on the various metal substrates, the quality requirements of the machine parts work in different environments to select different coatings and coatings to meet the requirements. .

For example, when plating on hydraulic piston rods is tested for corrosion resistance by salt spray test for several hours.

At Saigon Hydraulic, Class C hardened Crom Standard for Hydraulic Piston Hydraulic was tested by adding salt to 120h continuously.

Hydraulic piston size is applied according to ISO F7 assembly standards.

Standard hardness of hard chromium plating: 60-62 HRC depending on the grade of steel to be treated.

Some images of the hardened galvanized steel at Saigon Shipbuilding:
Chromium plating:


Chrome chromium


Chromium Chromium


Hard chromium plated products:
Hard chromium plating increases wear resistance for the following products:

Hand tools
Measurement instruments
Plating restoration of worn parts.
Engine shaft,
Roll Printing Industry
Structure of movement
Piston ring of internal combustion engine
Cutting tools,
Die casting or punching
Cylinder-piston
Metal wire molding.
Roller type rolls