uv 레이저 vs co2 레이저?
Apr 18 , 2023uv laser vs co2 laser?
UV lasers work a little differently to their CO2 or Fibre based siblings as they do not damage the materials surrounding surface, using a far lower power form of marking. This makes them the best of the bunch when it comes to “marking”, suitable for anything from fruit, to glass, teflon, diamond, silicone, plastic and precious metals. You really can mark almost anything with a UV laser!
How do UV laser marking systems work?
Operating at 355nm, UV lasers have a much shorter wavelength than the other technologies here. Using a process termed “cold processing”, UV lasers shoot high-energy photons in the ultraviolet spectrum that break the chemical bonds in the material which causes the material to undergo non-thermal process damage. This process does not produce thermal deformation (heat damage) on the inner layers and nearby areas of the target area.
A UV laser’s wavelength is one-third of standard wavelength lasers, therefore often referred to as third-harmonic generation (THG) lasers. This wavelength is achieved by passing a standard wavelength laser at 1064 nm through a non-linear crystal, reducing it to 532 nm, this is then passed through another crystal, reducing its wavelength further, down to the working 355 nm.
In summary, the UV marking process is extremely fine and controlled, making it great for delicate or accurate work. However, due to the process this technology employs, a UV laser marking system is not normally suitable for engraving or cutting.
Today,we will recommend you RFH UV laser brand from China.
20watt high power uv laser source cutting ceramics
Expert III 355 series UV DPSS laser, developed and produced by RFH, covers 10w-15w in laser power with short pulse width (<20ns@40K) ,superior beam quality (M²<1.2) and perfect laser spot quality (beam circularity >90%). It is widely used in PE/PCB/FPC cutting, glass & sapphire cutting, drilling, scribing & cutting used in high precision micromaching areas.
CO2 Lasers
Fiber lasers are the go-to option for part marking, engraving and especially metal. They are very well established in many industries and are often found on manufacturing lines, workshops and more, all around the world.
With most fiber laser modules possessing more than 100,000 operating hours before any maintenance is needed, they are exceptionally reliable (however other components in a laser marking system may require regular service). Moreover, as fiber laser engraver can be easily adjusted to achieve greater depth, they are very flexible and easy-to-use.
Operating at the 1,064nm wavelength, they are very well suited to metals, but can also operate on a much wider array of materials. This is why they are the most common choice for traceability marks such as barcodes, QR codes and text. Plus, their use for other graphics on things like personalised items, switches, phones, jewellery, becomes more popular day-by-day.
How do fiber laser engravers work?
CO2 laser cutters and engravers are excellent for organic materials like rubber, wood, paper, glass and ceramic. They are also the go-to choice for cutting acrylic and other plastics.
CO2 systems are amongst the most common type of laser used for industrial engraving and cutting. Smaller, low power units are those most commonly used by hobbyists due to their low cost (but also have a far lower operating lifetime).
How do they work?
Making use of CO2 gas in a sealed tube, acting as the laser medium, they operate at the 10,600nm wavelength. Unlike other technologies here, CO2 lasers typically come in a plotter format, however they are also available in a sealed unit.
FORMATS
Plotter (Plotter Laser)
플로터 시스템은 일반적으로 여러 스테퍼 또는 서보, 레일 및 벨트를 포함하는 모션 시스템입니다. 여기에는 일반적으로 단층 평면 볼록 렌즈를 포함하는 초점 캐리지로 편향을 통해 빔을 전달하는 일련의 3개 또는 4개의 거울이 부착되어 있습니다.
작동하는 동안 렌즈는 일반적으로 모양이 크고 직사각형인 작업 영역 위로 이동하여 초점을 맞춘 레이저를 작업물에 전달합니다.
밀봉(갈보 레이저)
이것은 일반적으로 검류계에 부착된 2개의 거울을 포함하는 밀봉된 장치입니다. 빔은 1µm 파장에서 F-Theta 렌즈로 알려진 고정 렌즈를 통해 초점을 맞춥니다. 작업 영역은 렌즈의 특성에 의해 제한되며 일반적으로 모양이 매우 작고 원형입니다. 기술적으로 이것은 빔 편향 레이저로 알려져 있습니다.
기술
DC CO2 레이저
이들은 상대적으로 저렴하기 때문에 제조업체 시스템에서 발견되는 가장 일반적인 유형의 레이저입니다. 효과적이지만 RF 시스템보다 느립니다. 또한 레이저 출력이 점차 감소하고 작동 수명이 짧아집니다(제조업체에서 10,000시간을 인용할 수 있지만 이는 저전력 설정에서 사용하는 경우에만 해당됨).
RF CO2 레이저 시스템
RF 시스템은 더 비쌀 수 있지만 이점은 종종 비용을 초과합니다. 우리는 훨씬 더 빠른 속도로 작동할 수 있도록 많은 기계에서 이 기술을 선택합니다. 사실 우리 시스템은 일반적으로 다른 제조업체의 속도보다 두 배 이상 빠릅니다. DC와 달리 레이저의 출력은 수명 기간 동안 거의 일정하게 유지됩니다. 또한 빔 전달의 품질과 기대 수명은 20,000시간 이상(단일 교대 작업의 경우 거의 8년)이 될 수 있으므로 CO2 레이저 절단기를 볼 때 "간단히 생각할 필요가 없습니다".
