What Are Metal Laser Cutters Used For?
The energy of the laser is concentrated into a high-density beam in the form of light. The beam is transmitted to the work surface, generating enough heat to melt the material, and the high-pressure gas coaxial with the beam directly removes the fused metal to achieve the purpose of cutting. This shows that laser cutting is essentially different from machine machining. It uses the laser beam emitted from the laser generator to focus on the laser beam irradiation condition of high power density through the external circuit system. The laser heat is absorbed by the workpiece material and the workpiece temperature rises sharply. After reaching the boiling point, the material begins to vaporize and form Holes, as the relative position of the beam and the workpiece moves, will eventually form a slit in the material. The technological parameters (cutting speed, laser power, gas pressure, etc.) and movement trajectory during slitting are controlled by the CNC system, and the slag at the slit is blown off by the auxiliary gas with a certain pressure.
Laser metal cutting machines are widely used in industrial manufacturing of metal fabrication, school education, small businesses, home business, small shop and home shop for sheet metal fabrication, aviation, spaceflight, electronics, electrical appliances, kitchenware, auto parts, subway parts, automobile, machinery, precision components, ships, metallurgical equipment, elevator, household appliances, metal signs, metal logos, metal tags, metal profiles, metal letters, metal words, metal arts, metal crafts, metal gifts, metal tool fabrication, metal foils, adornment, advertising and other metalworking industries. Metal laser cutters are suitable for carbon steel, stainless steel, tool steel, spring steel, galvanized steel, aluminum, copper, gold, silver, alloy, iron, brass, titanium, manganese, chromium, nickel, cobalt, lead and other metal materials. The following metal materials can be cut by metal laser cutter: Carbon Steel: The thickness of laser-cut carbon steel plate can reach 70mm, the slit of carbon steel cut by oxidation flux cutting mechanism can be controlled within a satisfactory width range, and the slit of thin plate can be narrowed to about 0.1mm. Stainless Steel: For the manufacturing industry dominated by stainless steel sheets, the metal laser cutting machine is an effective processing method. When the laser cutting heat input is strictly controlled, the width of the heat affected zone of the trimming edge can be limited, thereby ensuring good stainless steel The corrosion-resistant type. Laser cutting stainless steel uses the energy released when the laser beam is irradiated to the surface of the steel plate to melt and evaporate the stainless steel. For the manufacturing industry that uses stainless steel sheets as the main component, laser cutting stainless steel is a fast and effective processing method. The important process parameters that affect the cutting quality of stainless steel are cutting speed, laser power, air pressure and so on. Aluminum and alloys: Although laser cutting machines can be widely used in the processing of various metallic and non-metallic materials, some materials, such as copper, aluminum and their alloys, cause lasers due to some of their own characteristics (high reflectivity) Cutting is not easy to process. At present, the laser cutting of aluminum plates is widely used by fiber lasers. This equipment has good performance whether it is cutting aluminum or other materials.
Copper and Alloys: pure copper (purple copper) is too high reflectivity, laser cutting brass (copper alloy) should use higher laser power, auxiliary gas using air or oxygen, can cut thinner plates. Pure copper and Brass has high reflectivity and very good thermal conductivity. Pure copper and brass can only be cut when a "reflective absorption" device is installed on the system, otherwise the reflection will destroy the optical components. Titanium and Alloys: Pure titanium can be well coupled with the heat energy converted by the focused laser beam. When the auxiliary gas uses oxygen, the chemical reaction is violent and the cutting speed is fast, but it is easy to form an oxide layer at the cutting edge, which may also cause over-burning. Therefore, the use of air as an auxiliary gas can ensure the cutting quality. Laser cutting of titanium alloys commonly used in aircraft manufacturing is better. Titanium plates are cut with nitrogen and nitrogen as processing gases. Nickel and Alloys: also known as high-temperature alloys, there are many varieties, most of which can be laser oxidized and flux-cutting with good cuts. The cutting thickness of different laser powers is different, higher power metal laser cutter can cut thicker metals. At present, XTLASER's 15000W metal laser cutter has been mass-produced, and the thickness of different metals that can be cut: carbon steel cutting thickness up to 70mm; stainless steel cutting thickness up to 100mm; brass cutting thickness up to 70mm; aluminum plate cutting thickness up to 80mm.