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Compared with laser alloying, what is the main difference of laser cladding?

Compared with laser alloying, what is the main difference of laser cladding?

  • Categories:Industry news
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  • Time of issue:2020-09-03 13:29
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(Summary description)Laser cladding technology refers to the placement of selected coating materials on the surface of the substrate to be coated with different fillers, which are melted with a thin layer on the surface of the substrate by laser irradiation, and rapidly solidified to form extremely low dilution The surface coating is metallurgically combined with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical characteristics of the base material surface.

Compared with laser alloying, what is the main difference of laser cladding?

(Summary description)Laser cladding technology refers to the placement of selected coating materials on the surface of the substrate to be coated with different fillers, which are melted with a thin layer on the surface of the substrate by laser irradiation, and rapidly solidified to form extremely low dilution The surface coating is metallurgically combined with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical characteristics of the base material surface.

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-09-03 13:29
  • Views:
Information

Laser cladding technology refers to the placement of selected coating materials on the surface of the substrate to be coated with different filler methods, which are melted with a thin layer on the substrate surface by laser irradiation, and rapidly solidified to form a dilution The surface coating is extremely low and metallurgically bonded with the base material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, ,process methods such as oxidation resistance and electrical properties.

 

Compared with laser alloyinglaser cladding and laser alloyingBoth use the rapid melting process produced by the high-energy density laser beam to form an alloy coating with completely different compositions and properties that is fused with the matrix on the surface of the substrate.Although the two processes are similar, there are essential differences

 

The coating material in the laser cladding process is completely melted, and the base melting layer is extremely thin, so it has little effect on the composition of the cladding layer. Laser alloying is to add alloying elements to the surface of the base material in the molten cladding layer. It is to form a new alloy layer based on the substrate.

 

Laser cladding essentially does not use the molten metal on the surface of the substrate as a solvent, but melts separately configured alloy powder to make it the subject alloy of the cladding layer. At the same time, a thin layer of the substrate alloy is melted to form a metallurgical bond. The preparation of new materials by laser cladding technology is an important basis for the repair and remanufacturing of failed parts and the direct manufacturing of metal parts under extremely poor conditions, and has received great attention from scientific circles and enterprises around the world.

 

Compared with laser alloying, laser cladding technology is a new technology with high economic benefits. It can prepare high-performance alloy surfaces on cheap metal substrates without affecting the properties of the substrate, reducing costs, and saving precious and rare metallic material. The lasers widely used in laser cladding mainly includeCO2lasers and solid-state lasers, including disk lasers, fiber lasers and diode lasers.

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