Use medium and low power lasers to remove part of the materials on electronic components to achieve the purpose of changing electrical parameters (such as resistance, capacitance, and resonance frequency, etc.). laser pointer fine-tuning has high precision and fast speed, which is suitable for mass production. Similar principles can be used to repair defective integrated circuit masks, repair integrated circuit memory to improve yield, and can also perform precise dynamic balance adjustment on the gyro.
Laser welding has high strength, small thermal deformation, and good sealing. It can weld materials with large disparity in size and properties, as well as high melting point (such as ceramics) and easily oxidized materials. Laser-welded cardiac pacemakers have good airtightness, long life, and small size.
Irradiating the material with laser, choosing the appropriate wavelength and controlling the irradiation time and power density, can melt and recrystallize the surface of the material to achieve the purpose of quenching or annealing. The advantage of laser heat treatment is that the depth of heat treatment can be controlled, the heat treatment position can be selected and controlled, the deformation of the workpiece is small, and the parts and components with complex shapes can be processed.
The inner wall of blind holes and deep holes can be processed. For example, the life of the cylinder piston can be prolonged after laser heat treatment; laser heat treatment can restore the silicon material damaged by ion bombardment. The laser surface strengthening technology is based on the two processes of high energy density heating of the green laser pointer beam and rapid self-cooling of the workpiece, in the laser surface strengthening of metal materials.
When the energy density of the laser beam is at the low end, it can be used to strengthen the surface phase change of metal materials. When the energy density of the laser beam is at the high end, the spot on the surface of the workpiece is equivalent to a moving gap, which can complete a series of metallurgical processes, including Surface remelting, surface layer carburization, surface layer alloying and surface layer cladding. The material substitution technology triggered by these functions in practical applications will bring huge economic benefits to the manufacturing industry.
The main application in the modification of the tool material is the melting process. The melting process is that the surface of the metal material becomes a molten state under the irradiation of a laser beam, and at the same time it solidifies rapidly to produce a new surface layer. According to the changes in the surface structure of the material, it can be divided into alloying, melting coating, remelting refinement, glazing and surface compounding.