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Common processing technology of laser equipment
Updatetime: 2021-07-12 14:12View:
  Laser processing is divided into two types: laser thermal processing and photochemical reaction processing. Laser processing refers to processing methods such as laser welding, laser cutting, laser cladding, laser quenching, and laser marking by projecting a laser beam on the surface of a material. The following is a detailed analysis of various processing methods:
Laser welding
 
    Laser welding is an efficient and precise welding method that uses a high-energy density laser beam as a heat source. The welding process belongs to the heat conduction type, that is, the surface of the workpiece is heated by laser radiation, and the surface heat is diffused into the room through thermal conduction. By controlling the parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool.
 
 
laser cutting
 
    Material to be cut is irradiated with a high-power density laser beam to quickly heat the material to the vaporization temperature and evaporate to form holes. When the beam moves toward the material, the holes continuously form slits of extremely narrow width to complete the cutting of the material.

 


 

Laser cladding
 
    Laser cladding, also known as laser cladding or laser cladding, is a new type of surface modification technology. By adding a cladding material on the surface of the substrate, a high-energy-density laser beam is used to cladding a thin layer on the surface of the substrate to form a filling cladding layer combined with metallurgy on the surface of the substrate.
 
 
Laser hardening
 
    Laser quenching is a quenching technology that uses laser to heat the surface of the material above the phase transition point, so that after the material is cooled, the austenite becomes martensite, and the surface of the material is hardened.
 
 
Laser Marking
 
    Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses a high-energy density laser to locally irradiate the workpiece to vaporize the surface material or produce a chemical reaction that changes color, thereby leaving a permanent mark. Laser marking can produce all kinds of words, symbols and patterns.

 


 

Laser cleaning
 
    Traditional laser cleaning method is not ideal, and the new laser cleaning technology has the characteristics of no grinding, no contact, and no thermal effect. It is suitable for various materials and is considered to be the most reliable and effective solution. At the same time, laser cleaning can solve problems that cannot be solved by traditional cleaning methods.
 
 
Laser engraving
 
    In principle, laser engraving is not a phenomenon of light interference, but due to the focus with high enough laser intensity, although the laser transparent material is usually transparent, there is no absorption of laser energy, but it can produce a nonlinear effect at a high enough light intensity, in a short time The focal point of the micro-cracks that absorbs a large amount of energy, a large number of micro-cracks form an inner carved pattern.

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