Laser Cladding

One of the latest technologies from Cascadura Group. It is known for metallic deposition through laser, with special use for the repair of small regions or specific areas where the conventional welding process in not suitable, since it uses an electric arc as a heat source, inputting an amount of very high thermal energy to the substrate, where it often modifies its metallurgical structure in the vicinity of the fusion pool, known as HAZ (Heat Affected Zone).

While laser cladding generates the same metallurgical adhesion off the coating to the base metal with the great difference of not generating the formation of HAZ in the substrate, nullifying the possibility of distortion and dilution of the metal.

The creation of this mechanical bond between the base material and the layer is one of the most accurate welding processes available on the market, in which it resists impacts and particulate abrasion. It is possible to find a wide range of metal alloys available for application, which promote increased mechanical resistance to corrosion with high chromium alloys and alloys with varying contents of tungsten carbide to resist impact.

Please consult with our engineers, they will be able to find the best alloy application according to your needs.

How It Works

It is a process of deposition and formation of special layers by welding using a laser beam as a heat source fed by a flow of powder or metallic wire. This process develops a molten puddle on the surface of the part into which the chosen material is added simultaneously. Despite the high power of the laser as a heat source, the exposure time is short, which means that solidification and cooling times are fast.

Benefits:

Precise temperature control
Low or no distortion of the part welded;
Low dilution of the deposited material (it is possible to obtain 100% of the chemical composition of the consumable in just 0.8mm of deposited layer);
Formation of metallurgical alloy between deposit and substrate as in any other conventional welding process;
Increases weldability, especially on more sensitive substrates such as carbon-rich steels or superalloys that are difficult or even impossible to weld using conventional welding processes;
HAZ greatly reduced due to the low contribution of thermal energy, making it possible to eliminate heat treatment after welding;
The deposited layer has a very fine and homogeneous crystalline structure resulting from rapid solidification, which greatly increases corrosion resistance. For carbide compounds, wear resistance;
Due to the low thermal energy used, there is no loss element alloy during the fusing process.