Fiber Laser Cutting Machine

         Laser is to use matter excitation to generate light. This kind of light has a strong temperature. When it contacts the material, it can quickly melt on the surface of the material, forming a hole, and forming a cutting according to the movement of the point to point. Therefore, such a Compared with the traditional cutting method, the cutting method has smaller gaps and can save most of the materials.

         However, according to the definition and analysis of the cutting effect, the cutting effect of the material cut according to the laser can be satisfactory and the precision is high, which inherits the advantages of the laser, and is also unmatched by ordinary cutting methods.

        Compared with traditional cutting methods, laser cutting is easier to understand and learn, and has absolute advantages in terms of processing effect and speed required by mechants. Therefore, it is believed that laser cutting machines will be very popular in the choice of cutting methods in the future.

        Laser cutting technology has the following advantages:

        1. High precision: the positioning accuracy is 0.05mm, and the repeat positioning accuracy is 0.02mm.

        2. The thin kerf: the laser beam is focused into a small light spot, so that the focal point reaches a high power density, the material is quickly heated to the degree of gasification, and evaporates to form holes.

As the beam moves linearly relative to the material, the holes are continuously formed into narrow slits. The incision width is generally 0.10-0.20ram.

        3. Smooth cutting surface: the cutting surface has no burrs, and the surface roughness of the incision is generally controlled within Ral2.5.

        4. Fast speed: the cutting speed can reach 10m/min, and the maximum positioning speed can reach 70m/min, which is much faster than wire cutting.

        5. Good cutting quality: non-contact cutting, the cutting edge is less affected by heat, there is basically no thermal deformation of the workpiece, completely avoiding the collapse of the edge formed during the punching and shearing of the material, and the cutting seam generally does not require secondary processing.

        6. No damage to the workpiece: the laser cutting head will not touch the surface of the material, so as not to scratch the workpiece.

        7. Not affected by the hardness of the material to be cut: the laser can process steel plates, stainless steel, aluminum alloy plates, hard alloys, etc., no matter what the hardness is, it can be cut without deformation

        8. Not affected by the shape of the workpiece: laser processing has good flexibility, can process any graphics, and can cut pipes and other special-shaped materials.

        9. It can cut and process non-metal: such as plastic, wood, PVC, leather, textiles and plexiglass.

        10. Save mold investment: laser processing does not require molds, no mold consumption, no need to repair molds, saves time for mold replacement, thus saving processing costs and reducing production costs, especially suitable for processing large-scale products.

        11. Material saving: Using computer programming, products with different shapes can be cut into the whole board material to maximize the utilization rate of materials.

        12. Shorten the new product manufacturing cycle: new product trial production, the quantity is small, the structure is uncertain, it will be changed at any time, and the mold cannot be produced at all. The laser cutting machine greatly shortens the new product manufacturing cycle and reduces the mold investment.

Materials suitable for laser cutting

structural steel

        This material gives better results when cut with oxygen. When oxygen is used as the processing gas, the cutting edge will oxidize slightly. For plates up to 4mm thick, nitrogen can be used as the processing gas for high pressure cutting. In this case, the cutting edge will not be oxidized. For plates with a thickness of more than 10mm, better results can be obtained by using a special plate for the laser and oiling the surface of the workpiece during processing.

Stainless steel

        Oxygen can be used where oxidation of the cut end is acceptable; nitrogen is used to obtain an oxide-free, burr-free edge that does not require further treatment. Coating oil film on the surface of the plate will get a better perforation effect without reducing the processing quality.

Aluminum

        Despite high reflectivity and thermal conductivity, aluminum thicknesses up to 6 mm can be cut, depending on alloy type and laser capability. When cutting with oxygen, the cutting surface is rough and hard. When nitrogen is used, the cut surface is smooth. Pure aluminum is very difficult to cut because of its high purity, and it can only be cut when a "reflective absorption" device is installed on the system. Otherwise reflections could destroy the optical components.

Titanium

        Titanium sheets are cut using argon and nitrogen as process gases. Other parameters can refer to nickel-chromium steel.

Copper and brass

        Both materials have high reflectivity and very good thermal conductivity. Brass with a thickness of less than 1mm can be cut with nitrogen; copper with a thickness of less than 2mm can be cut, and the processing gas must be oxygen. Copper and brass can only be cut if the system is equipped with a "reflective absorber". Otherwise reflections could destroy the optical components.

Application Range

        Most laser cutting machines are controlled by CNC programs or made into cutting robots. As a precision processing method, laser cutting can cut almost all materials, including two-dimensional cutting or three-dimensional cutting of thin metal plates.

        Laser cutting forming technology is also widely used in the field of non-metallic materials. Not only can it cut materials with high hardness and high brittleness, such as silicon nitride, ceramics, quartz, etc.; it can also cut and process flexible materials, such as cloth, paper, plastic board, rubber, etc., such as clothing cutting with laser, it can save clothing material 10 % to 12%, increasing the efficacy by more than 3 times.