CO2 lasers differ from fiber lasers by the wavelength of light, which significantly increases the range of materials that can be processed with it. The most popular materials are: wood, plastics like PMMA (plexiglass), fabrics, rubber, stone, glass as well as steel and coated non-ferrous metals. In the past the most popular co2 lasers used kilowatt […]
CO2 lasers differ from fiber lasers by the wavelength of light, which significantly increases the range of materials that can be processed with it.
The most popular materials are: wood, plastics like PMMA (plexiglass), fabrics, rubber, stone, glass as well as steel and coated non-ferrous metals.
- In the past the most popular co2 lasers used kilowatt power and were mainly used to cut thick sheet metal. Over time, small 40-80W office lasers began to be produced, mainly used as engraving machines.
- Now the most popular models have a power of 100-150W, and in addition to engraving like models with lower power, they can cut quite thick materials 15-20mm (50mm) as well as steel up to 2mm thick.
Cutting thick materials results in a loss of accuracy due to the need for longer focal length lenses. For example, for a material up to 3mm thick, you can use a lens with a focal length of 1.5 “and we get an accuracy of 0.08mm, while for a 15mm thick we will use a lens with a focal length of 4” and the accuracy will drop to 0.35mm.
Materials that can be processed with a CO2 laser are divided into two categories:
- Materials that we can cut:
- all types of plastics – ! but it should be remembered that many of these materials produce toxic fumes and gases (such as popular polycarbonates, PVC). The harmfulness of a given material can depend very much on its color – the components of the dye used in production !
- wood and its derivatives ( the quality of cutting maximum thickness depends very much on the type of wood, its dryness, or the adhesive used)
- colored metals only in the form of a thin film.
2. Materials that can be engraved:
- all types of plastics (subject to damage as if cutting)
- wood and its derivatives (you can get a relief effect with variable engraving depth)
- only coated non
- ferrous metals (e.g. anodized aluminum)
1. Before starting the fiber laser (laser cutter) important step is to check the condition of protective lenses and ensure yourself that on the lens does not occur any scratches, burns, dust or cracks. 2. Before starting a cutting process you have to check and prepare following steps: If the pressure in the pneumatic system […]
1. Before starting the fiber laser (laser cutter) important step is to check the condition of protective lenses and ensure yourself that on the lens does not occur any scratches, burns, dust or cracks.
2. Before starting a cutting process you have to check and prepare following steps:
- If the pressure in the pneumatic system is not less than 7 bar.
- First lift the cutting head, then move it to the edge and make sure that the cutting elements are in the right position.
- Perform process performance simulations to ensure that the cutting order is correct.
3. During cutting, make sure whole procces run properly. If not, stop the cutting first, manually raise the cutting head, then check if the cutting parameters are selected correctly, and that the nozzle and protective lens are not damaged in any way. Then make the correct adjustments of these components and continue work monitoring.
4. Also in time of cutting process, make sure that the workpiece has not changed its position in the working area. If so, remember to eliminate the collision points of the cutting head and the element.
5. Monthly cleaning of the cooling system unit and replacement of distilled water once or twice a month is highly recommended.
6. Once in a while we suggest cleaning the drawers for cut-out elements, because they collect a lot of filings and other impurities.
7. Attention ! It is forbidden to stare at the laser source and other points where the laser causes reflection, during the working process of a device.
|Check Cycle||Elements of the device to be checked||Operation to make|
|Everyday||Work table||Cleaning of cutting residue|
|Everyday||Wires||Checking if any wires are broken or cutted|
|Everyday||Fans||Ensure that every fan is working properly ( also in control box )|
|Everyday||Guides||Checking if the lubricant is applied correctly, that there are no leaks and that the guides are not crooked|
|Everyday||On-board computer||Execution of antivirus scan|
|Once a week (or if necessary)||Protective lens||Checking if the lens is dirty and performing cleaning|
|Occasionally||Extraction and water connection||Ensuring that the water connections and flue gas extraction have no interruption and are sufficiently efficient|
Co2 Laser vs Fiber Laser The first Co2 lasers were used in metalworking already in the 1980s, however, over time engineers and scientists have made significant progress. Although the technology of fiber optic lasers had its origins in the 1970s, but the development of this field lasted more than two decades. Initially, fiber lasers (fiber […]
Co2 Laser vs Fiber Laser
The first Co2 lasers were used in metalworking already in the 1980s, however, over time engineers and scientists have made significant progress. Although the technology of fiber optic lasers had its origins in the 1970s, but the development of this field lasted more than two decades.
Initially, fiber lasers (fiber optic) had the power of several mW, which have make them not suitable for steel industry. DOnly in the year 2000 the first fiber laser with a power of 100W was created, and in the next decade the technology evaluated and the power of fiber optic (diode) lasers increased to 20kW.
A new era of lasers in the metal industry was born.
Fiber laser technology is considered breakthrough and “revolutionary”, because it has affected the entire metalworking and manufacturing sector. In just 5 years fiber lasers reached the cutting threshold of 4kW, which in the case of CO2 lasers lasted almost 4 times longer. After ten years, fiber lasers have reached a power range from 10kW to 12kW, where CO2 lasers have never reached that goal. In the following years fiber lasers reached a power exceeding 20 kW. They have been used in various industries for many years in applications other than sheet metal cutting.
The advantages of fiber laser technology
The basic advantages of cutting flat sheets using fiber laser technology result from the monolithic Fibre-to-Fiber semiconductor configuration, which requires no maintenance and provides lower operating costs than comparable CO2 lasers.
The properties of the laser beam also provide much faster cutting than in the case of CO2 lasers, as we will discuss below.
A concentrated beam, even a 2kW fiber laser, has a 5 times higher power density at the focal point than a 4kW CO2 laser. It also has 2.5 times higher absorption characteristics due to the shorter wavelength of the fiber laser. Higher wavelength absorption and higher power density created by the concentrated beam combine to achieve up to five times the increase in cutting speed in materials less than 6 mm thick.
The advantages of higher speeds are also achieved when nitrogen is used as an auxiliary gas, as the molten material is immediately removed from the gap created by the cutting process.
The higher the power density of the laser beam, the faster the material is melted, the faster the feed rate. Higher cutting speed of fiber optic lasers significantly reduces processing costs.Efficient use of the benefits of high power fiber lasers requires careful planning and management of all processes.Up to four times the bandwidth and lower cost of processing, which is more than half of what a CO2 laser can do, so financial gains can double.To sum up, unit costs of reconciliation elements will be lower, higher profit margins and shorter return on investment. Do not forget about the additional benefit of increased machine efficiency. You can process twice as much material at the same time providing the opportunity to take additional orders to further increase revenue from sales and thus the company’s profits.
Fiber laser can cut copper, brass and aluminum much better, faster and safer than CO2 because the beam is more easily absorbed and does not reflect light. The operating costs of a fiber optic laser are usually half of what a CO2 system can offer due to the lower power consumption and high electrical efficiency of fiber optic lasers.
There are many aspects that testify to the advantages of fiber optic laser:
- Fiber lasers do not need any warm-up time – usually about 10 minutes to start a high power CO2 laser.
- Fiber-optic laser does not require any beam maintenance, such as cleaning the mirror or lens and beam calibration. It can consume another 4 or 5 hours a week on a CO2 laser.
- Fiber lasers have a fully sealed fiber path both at the source and when transporting the laser beam to the cutting head.
- The beam path is not exposed to contamination as is the case with CO2 lasers.
- Transport of the beam from the generator to the cutting head maintains consistent laser light centering. Since the integrity of the fiber optic beam remains constant just like the cutting parameters require much less adjustment than a CO2 laser.
The purchase, operating and maintenance costs of fiber lasers are significantly lower than for Co2 lasers. In the same way, the efficiency of a fiber (diode) laser is more than twice as high. A simple balance between the two technologies speaks in simple terms. . . . the winner is the Fibre Optic Laser!
Linear guides, like any rolling bearing, need a sufficient supply of lubricants .In principle, it is possible to lubricate both with grease and oil. Lubricants reduce wear, protect against dirt, prevent corrosion and extend the service life thanks to their properties. Dirt can accumulate and settle on unprotected profile rails. For grease lubrication we recommend […]
Linear guides, like any rolling bearing, need a sufficient supply of lubricants .In principle, it is possible to lubricate both with grease and oil. Lubricants reduce wear, protect against dirt, prevent corrosion and extend the service life thanks to their properties. Dirt can accumulate and settle on unprotected profile rails.
- For optimal loads : K2K
- For higher loads (C/P < 15) – KP2K with consistency class NGLI 2 according to DIN 51818
The frequency of re-lubrication depends mainly on the loads and environmental conditions. Environmental influences as well as high loads, vibrations and contamination make lubrication intervals shorten. In clean environments and under low loads, the lubrication intervals can be extended. Lubrication should be carried out after a mileage of approx. 100 km.
- BEACON EP1, Fa. ESSO
- Microlube GB0, (KP 0 N-20), Staburags NBU8EP, Isofl ex Spezial, Fa. KLÜBER
- Optimol Longtime PD0, PD1 lub PD2 depending on the application temperature, Fa. OPTIMOL
- Paragon EP1, (KP 1 N-30), Fa. DEA
- Multifak EP1, Fa. TEXACO
Before each lubrication it is necessary to thoroughly clean the linear guides from residues of the old Lubricant and impurities.
For cleaning we use :
- Extraction thinner
- Brake cleaner
- Dissolvent R505
- other products for removing greases and oils (they can be BIO-degradable)
Lack of proper maintenance significantly increases the consumption of linear guides and may invalidate the warranty.
LPG Technology – ( The light-conducting plate) , the radius generated from LED, passes through the LGP and is refleted from the surface according to the principle of total internal reflection. LGP panels are used in many fields of industry and advertising. F.E illuminated advertising plafonds, coffers, frames and visual advertising, lighting and furniture industry. LGP panel […]
LPG Technology – ( The light-conducting plate) , the radius generated from LED, passes through the LGP and is refleted from the surface according to the principle of total internal reflection. LGP panels are used in many fields of industry and advertising. F.E illuminated advertising plafonds, coffers, frames and visual advertising, lighting and furniture industry.
LGP panel is an acrylic sheet usually made of pure PMMA resin. PMMA material is extremely transparent and resistant to weather conditions.
At the bottom of the plate (matrix) a laser grid of points, crosses, ellipses, rectangles, or lines V and H is created. Depending on the number of light sources, the appropriate combination is used. The most popular is a grid consisting of vertically or horizontally arranged lines and also in the form of a lattice.The aim of all this methods is to direct light in the right direction and its dispersion, which results in evenly illuminated panels emitting a large amount of light.