SURFACE TREATMENTS

We are able to meet your quality requirements on time and using treatments as requested.
The thermochemical treatments are applied in order to increase either hardness, resistance to corrosion or to surface layer wear with maintaining the core toughness plasticity.

In addition to the above-mentioned, we are able to supply parts with various treatments:

• Cementation;

It is the thermochemical carbon treatment usually applied to low-carbon steels, at a temperature immediately above the Ac3 point, in an environment able to give active carbon, in order to manufacture a cemented part with a tough core, with 0.08-0.15%C.
For larger parts, in case a higher core toughness is required, the content of carbon is increased up to 0.24%. The environment which gives the diffuser, the carbon, is called carbon rich environment and may be solid or gas.

• Heating and cooling;

The treatment required to increase the metal long-term resistance. By heating to high temperatures and then outdoor cooling, metal hardness decreases and thus it becomes more resistant.

• Nitriding;

It is the thermochemical nitrogen treatment applied on steels and cast irons with a certain chemical composition, at a temperature lower than Ac1 point, in an atmosphere of ammonia or another environment able to give active nitrogen.
This treatment is applied to get a surface layer rich in nitrogen, in order to increase the surface hardness, as well as wear, fatigue and corrosion resistance.
The nitriding layer applied on steels is very thin, only a few tenths of a millimeter.

• Galvanization;

It is the electrochemical process of covering a metal, for decorative or anticorrosive purpose, with a coat of another metal whose ions are dissociated in the electrolyte solution.

• Browning;

The process of chemically covering a steel or copper part with a dark oxides layer in order to prevent corrosion.

• Anodizing;

The treatment of a metal, usually aluminum, that has been coated with an oxide protective or decorative layer by means of an electrolytic conversion process. The process of anodizing affects both the surface and the interior of the metal.
The anodized parts are durable, do not lose luster, are resistant to abrasions and maintain their appearance for a long period of time.

• Phosphating;

The process of applying a coat of crystalline phosphate to steel or cast iron parts (protecting against corrosive agents).

• Powder coating

It is an operation of covering done by applying dry paint particles through the electrostatic field.
One of the great advantages of the powder coatings is resistance in time. Of course, for each environment or way of use, a different type of powder is recommended.