In spite of being the oldest form of gas lasers, CO2 laser cutter are still considered one of the most valuable types of lasers. Also, it is included in the list of supposed versatile lasers since it is actually helpful in several applications and procedures. It is made of a combination of various chemical components. Apart from carbon dioxide, nitrogen and helium are present at the outlet as well. The ratio of these 3 components is 9.5: 13.5: 77. These have various roles to play in the technique. It is in nitrogen where the energy is engaged before it ignites carbon dioxide. Since CO2 produces a laser, nitrogen carries on igniting it. The role of helium is seen through the process of heat transfer.
The basic types of carbon dioxide lasers are divided into three. First, there is the axial gas flow that pumps the mixture of carbon dioxide, helium and nitrogen from one end of the tube before it exits towards the other. To ensure that the flow is maintained well, carbon dioxide is continuously pumped into the pipe. The role of helium and nitrogen in the procedure is to improve efficiency. The length of this carbon dioxide laser can be condensed with the help of folded optical methods. Also, there is a CO2 laser cutter of transverse gas flow. The gas flow for this technique is horizontally done. A third type well-known as the sealed tube is available as well. This is just same as the sealed argon and krypton lasers sealed with helium and neon. It is not filled during the process.
In addition to these types are various construction materials to take into account. The mirrors, for instance, use silicon, gold, and molybdenum, all coated. For windows, germanium and zinc selenide are used in construction. In some cases, the diamond can be used in the production of windows or mirrors. Some of the traditionally produced optical elements were made of sodium or potassium chloride. Currently, these materials are no longer used because, in spite of their low cost, production degrades rapidly, in particular when there is moisture in the atmosphere.
The cutting quality of a CO2 laser remains constant in all ranges of material thickness, while a fiber laser is a better cutter in the range of thin material, but begins to lose the quality of cutting when the thickness of the material exceeds 5 mm. Although fiber optic provides performance advantages in the range of thin material, CO2 lasers surpass them when the thickness of the metal that is cut exceeds 5 mm. While this can be true when comparing most fiber lasers to CO2, in several units the common consensus of fiber cut quality can vary. In 2kW IPG’s fiber laser units have been shown to reach a cutting quality equal to or better than the CO2 laser up to 12 mm in mild steel. With this thickness, the laser cut at the similar speed as CO2 and the power consumption per cut was even lower using fiber technology. Check this site.
In general, CO2 laser cutters are used in cutting, engraving, and heat treating, as well as welding. In addition, they are significant in the production of cardboard, fabric, paper, plastics, wood, and ceramics. They can also be used in medical fields especially in the world of dermatology. Dermabrasion, laser surgery, and skin rejuvenation are some of the examples in this application.
Laura Jones June 3rd, 2018
Posted In: Cutting Ideas
If you want to stand out with customers or clients then you should understand the benefits of laser cutting.
Within the past few years, businesses have launched which specialize in custom laser cutting operations. These specialists work with everything from metal to paper. Cutting paper with a laser is particular exciting because it allows very complex designs to be replicated exactly. Paper works as an excellent substrate and can be cutting with near perfect edges.
Until the past few years paper products have been cut by a hand with scissors or by a blade-based machine. Both of these methods have severe limitations. With hand cutting, the cut is only as good as the worker and machines quickly dull or lose alignment. Both of these methods often produce a less than perfect result. Unfortunately, a few decades ago before the commercialization of the laser these were the only options.
Another benefit is the relative speed of most commercial systems. Hand cutting detailed patterns can take hours or even days. Also, with hand cutting, mistakes are frequent and precision is often fair at best. Powerful lasers have the ability to cut the same pattern in often a few seconds. Furthermore their ability to replicate the same design is unmatched with conventional methods. The newest system can cut with precise down to a fraction of a millimeter with a perfect edge. This precision also enables layering of patterns or even mass production of paper products.
Here are a few list of the laser cutting designs:
Clear Acrylic – 3.0 mm. Top Quality: Engraves Beautifully. Why is clear acrylic the #1 choice of makers in 2016? Because of what it shows during the reaction to the laser machine. The surface and the area of the said thermoplastic engraves a super nice and artistic frosty finish product that catches the light so wonderfully and also the edges will melt smoothly instead of burning such as the wooden materials. Clear acrylic is popular for co2 laser machines as you can see here.
Amber Bamboo – 2.7 mm. Top Quality: Natural Honey Tone. Bamboo is said to be the super versatile. Makers will use it create designs for jewelry, electronics enclosures, tableware, conference badges, book covers, signage and also displays for sale purposes.
Birch Veneer – 5.2 mm. Top Quality: Thicker yet Economical. When you need thicker wood for your laser cutting projects, this is the top choice. Like its thinner companion, this birch is commonly used in making product for housings, drones, prototyping, clocks, furniture and also signage.
Black Acrylic – 3.0 mm. Top Quality: Classic Black. Black acrylic is a classic favorite. Why? Because engraving looks so good on this material. This frosty white kind of engraving contrasts creates a beautiful black design. Learn more detailed information at http://www.engineering.com/AdvancedManufacturing/ArticleID/15268/THIS-WEEK-IN-MACHINERY-Turning-Grinding-Laser-Cutting-More.aspx
Typical custom laser cutting projects begins with a designer creating a digital image of a pattern. This design should be reviewed carefully to ensure that all regions of the pattern are connected and well supported so it will be structurally strong. Modern co2 laser cutter system can cut thick paper products and even textiles which give designers a wide range of substrates to choose.
For more detailed patterns thicker substrates are often recommended to prevent structural instability. Often, trial or sample cutting on a variety of substrates to a good way to judge if the laser cut design is strong enough to fulfill its purpose. To avoid these downfalls often choosing a manufacture’s professional pre-made design can ensure it is both pleasing and functionally strong.
Laura Jones July 18th, 2017
Posted In: Cutting Ideas