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Type of Laser for Aluminum Cutting

If you want to cut aluminum, you will want to use a laser with high-pressure gas. This will give you the best edge quality and fastest cutting speeds. This type of laser cuts both aluminum and steel with similar thicknesses. The gas blends used for cutting aluminum are the same as for steel, but the amount of high-pressure air in the mixture differs slightly.

Laser Power

The laser power for aluminum cutting has a number of advantages. Laser cutting can bring aluminum past its melting point, which is approximately 1,200 degrees F. As aluminum rises in temperature, its viscosity will also drop significantly. The heat from laser cutting will bring the aluminum past its melting point, and its viscosity will reduce by half. When aluminum approaches resolidification, it is incredibly difficult to evacuate it before it solidifies.


Laser cutting is also faster than conventional processing. The heat generated by the cutting process dissipates quickly, which reduces heat buildup. The best lasers for cutting aluminum are high-speed pulsating lasers, which melt the metal rapidly and dissipate heat to the surrounding area. However, the laser cutting process is inefficient if aluminum has burrs and sharp edges. In some cases, it is necessary to perform secondary machining to achieve a clean and smooth edge.

Laser power for aluminum cutting should be high enough to cut through the aluminum without causing cracks. The laser beam should be focused at the middle of the plate thickness. If the focus point is too shallow, the result is a kerf line that is not as smooth as the aluminum plate. In addition, high-powered lasers should have a nitrogen or air assist system to prevent hot spots.

When buying a laser for aluminum cutting, make sure to choose a brand that works with aluminum. If it does not work with the material you’re cutting, you’ll run the risk of reflection, which will damage the machine. In fact, back reflection systems are designed to protect the laser and stop it before it causes major damage.

Compared to other cutting methods, laser cutting aluminum is more accurate. It is also faster, and allows for higher processing speeds. It also reduces the risk of burrs. With laser technology, you can also control the time it takes to process the material. The process is also more cost-effective.

Oxygen can enhance the effects of the laser on the workpiece, making the process much faster. The laser can fire a continuous or rhythmic infrared beam. Secondary equipment like diodes and optical pumps can improve the beam quality. The Nd-YAG laser has good positional stability and is efficient even for low-powered operations.

Speed for Aluminum Laser Cutting

Speed is an important factor to consider when using a laser cutter for cutting aluminum. It is important to have enough speed and high pressure to eliminate the buildup of rough edges and to get a smooth cut. It is also important to have a gas assist feature, which enables the cutting head to push a kerf line faster.

For example, a 26-gauge aluminum sheet should have a cutting speed of 5,900 ipm with a gas pressure of 14 bar. The laser power should be enough to provide enough energy for cutting the metal. A high-power CO2 laser should have a wavelength of 1.06um, which is well absorbed by metal. The best option for cutting aluminum is to use fiber lasers, which can operate 3 times faster than CO2 lasers.

Aluminum is a hard material to laser cut, which requires expertise. It is particularly challenging to get a clean edge. High-speed lasers should have a repeatability index of +0.002″ or better. This ensures that each cut is perfect and within tight tolerance. Precision and repeatability help to increase the efficiency by up to 20%.

Aluminum laser cutting is a non-contact process, which means there is no physical contact between the workpiece and the cutting tool. This eliminates mechanical stresses that can cause fillets and blanking in the material. A high-speed aluminum laser cutter, such as the FiberCell from Kern, provides high-speed, repeatability, and accuracy. In addition, it comes with a safety enclosure for added protection.

The speed of aluminum laser cutting is inversely proportional to the thickness of the material. For thin-gauge aluminum, ultra-high-power is not necessary. You can lower the power to sixkW. For thicker material, such as aluminum sheets, you can use a 10-kW machine. Some of the best aluminum lasers can go as high as 20kW.

Advanced laser cutting systems can pierce 1/2-in. steel in about 1.6 seconds, a half-inch in two seconds, and a one-inch part in just 3.2 seconds. This is an exceptional speed for laser cutting, and its benefits are exponential on parts with a high number of holes.

Auxiliary Gas

Oxygen has been used as an auxiliary gas for laser cutting, and its use for aluminum cutting has many benefits. It can reduce the oxide film on aluminum plates, and it can increase cutting speed and thickness. Its high gas pressure is also helpful in accelerating the cutting process. The type of gas used can greatly affect the cutting effects, so it’s important to choose one that’s right for the job.

The type of auxiliary gas used for cutting aluminum is important. Using air will cause less oxidation on aluminum, while nitrogen will give a smoother, cleaner cut. For best results, nitrogen gas should be used with high pressure and flow. Using air may result in reflection of laser light back onto the material, which hinders the cutting process and can even damage the laser module.

The focal position of the laser is also important to the process. The laser beam will be narrower near the focal point and wider away. Changing the focal point will change the kerf width and thickness. Another advantage of auxiliary gas laser for aluminum cutting is its speed. In most cases, CO2 lasers require more power, while fiber lasers can work three times faster than CO2 lasers on aluminum.

Reflection Detector

Laser cutting aluminum is a complicated process, and the correct parameters are essential for successful cutting. Aluminum is highly reflective, making it difficult to create a clean edge. However, with the right laser parameters, aluminum can be cut to precise dimensions with a high rate of productivity. Below are some considerations to consider when laser cutting aluminum.

Firstly, you need to consider how much aluminum you need to cut. A higher power laser will produce higher quality cutting results. And a higher wattage laser will cut the material more quickly and produce a smoother surface. A higher wattage laser will also cut aluminum more efficiently and push the kerf line quicker.

Next, check whether the laser can handle different materials. If you want to use a laser for aluminum cutting, you should ensure that the machine is compatible with your metal of choice. Aluminum is highly reflective and if the cutting parameters are not consistent, the laser may be damaged. Newer models of laser cutting equipment will have advanced sensors to detect any reflection and shut down the laser immediately. This allows the operator time to adjust the settings and prevent major damage.

The laser has various characteristics that play an important role in cutting the material. These parameters include the laser power, wavelength, modal quality, and spot size. These parameters are directly proportional to the thickness and cutting speed of the material. They also affect the economics of the process. Therefore, you must find the right balance between the cost of the hardware and productivity.

CO2 lasers can be a good option for aluminum cutting. CO2 lasers can operate at up to 6kW of power. The high power can improve the part quality while keeping the cut line clean. Additionally, CO2 lasers are more energy efficient than gas. It also uses a gas that doesn’t react with the melted material.

The return laser power may cause an excessively high reflection. If the laser is not safe, the return laser light can cause damage to the laser source. This can also result in an abnormal cutting process, visit website

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