As people's standard of living improves, demands on the quality of the living space we occupy increase. For example, in communication, we expect ultra-high definition, fast response speed, security, reliability and confidentiality, which imposes more demanding requirements on communication infrastructure.
To respond to this need, scientists overcame the barriers of 4G communication and developed 5G communication, which was applied to civilians, and the technology drove the progress of 5G.
National confidential communication is particularly significant with regard to security. Countries have launched research and development programs, as well as investments, in confidential quantum communication, placing them at the forefront of the world and taking a crucial step towards national security communication. This was possible thanks to scientific advances in aerospace, satellite and communications.
These technological advances are not only scientific and technological advances in individual fields, but also a series of industrial scientific achievements. Ultra-thin metal materials, including copper foil, aluminum foil, stainless steel foil, nickel alloy foil and titanium alloy foil, are among the most widely used materials in the fields of satellite, aerospace, communications and 5G.
Ultra-thin metal
To cut ultra-thin metal sheets, it is recommended to use a nanosecond ultraviolet laser cutting machine with a power of more than 10W.
The advantage of using this type of laser cutting machine is that there are no deformations and burrs in the cutting process, but the disadvantage is that carbonization may occur, especially for thicker materials.
The degree of carbonization becomes more evident as the thickness of the material increases, and black edges of soot may be visible to the naked eye, which can be removed through ultrasonic cleaning.
Under high power magnification, there may be burrs.
Compared with the infrared nanosecond laser cutting machine, the single pulse energy of the nanosecond UV laser cutting machine is lower and the cutting speed is relatively low, making it unsuitable for cutting thick metal sheets and more suitable for processing materials below 0.1 mm.
The nanosecond UV laser cutting machine is also suitable for processing multilayer materials, such as UV laser cutting of multilayer copper foil or cutting aluminum foil with a layer of PET film, making it a suitable choice for processing with nanosecond UV laser cutting machine.
Ultra-fast laser cutting machine
Ultrafast laser cutting machines are used to cut ultrathin metal materials using ultrashort pulse laser cutting equipment such as picosecond infrared laser cutting machines, ultraviolet laser cutting machines and femtosecond infrared laser cutting machines.
Among them, femtosecond infrared laser cutting machines are preferred for cutting materials such as stainless steel sheets, copper sheets, nickel alloy sheets and titanium alloy sheets. These machines have significant advantages over nanosecond laser cutting equipment, as they produce no burrs, no deformation, low thermal impact and low levels of carbonization (as low as 2 microns).
Femtosecond laser cutting machines use ultrafast femtosecond pulse laser technology and can be equipped with 1030nm, 515nm or 315nm band lasers based on the characteristics of the material. In China, the equipment is mainly equipped with 1030nm and 515nm femtosecond lasers and is used for cutting, engraving, drilling, micro/nano scribing and other applications.
Femtosecond laser cutting machines have minimal thermal effects on the material and interact with the material for a very short period of time, which is less than the Brownian motion time between the material's molecules. Therefore, the thermal effect on the material is minimal and does not cause any deformation of ultra-thin metal materials, burrs, dust particles or other problems.
Wrap it up
The ultra-fast femtosecond laser cutting machine is highly advantageous for micro-precision machining of ultra-thin metal sheets due to its high precision.
On the other hand, UV laser cutting machine is more suitable for precision processing, processing of multi-layer materials and processing of materials with thicknesses less than 0.1mm.
Meanwhile, infrared laser cutting machine is best for processing thick and ultra-thin materials above 0.2mm with low precision requirements.
In addition to cutting ultra-thin metal materials, the femtosecond laser cutting machine is highly flexible and can be used to engrave multilayer materials, process micro nano guide structures on material surfaces, such as silicon scribe, stainless steel grid, ceramic scribe , fine engraving film material engraving, glass engraving and more.
