How do you laser engrave Aluminium?

Carbon dioxide laser engraving machine can't process metal surface, it can only be used for engraving part of non-metal surface. Now semiconductor laser and optical fiber can process metal surface. This effect should be produced by optical fiber laser marking machine
engraving machine

Although almost all metal materials can be processed by metal laser cutting machine have high reflectivity to infrared wave energy at room temperature, CO2 laser emitting 10.6um beam in far infrared band is successfully applied to many metal laser cutting practices. The initial absorptivity of metal to 10.6um laser beam is only 0.5% ~ 10%. However, when the focused laser beam with power density more than 106W / cm2 irradiates the metal surface, the surface can start to melt quickly in microseconds. The absorptivity of most metals in the molten state increases sharply, generally by 60% ~ 80%. For carbon steel, the modern laser cutting system can cut a large thickness of carbon steel plate up to 20 mm. The cutting seam of carbon steel can be controlled in a satisfied width range by using the oxidation melting cutting mechanism, and the cutting seam of thin plate can be narrowed to about 0.1 mm. Stainless steel, laser cutting is an effective processing tool for the manufacturing industry using stainless steel sheet as the main component. Under the strict control of the heat input measures in the laser cutting process, the heat affected zone can be limited to become very small, so as to effectively maintain the good corrosion resistance of this kind of materials. Alloy steel, most alloy structural steel and alloy tool steel can obtain good edge cutting quality by laser cutting. Even for some high strength materials, as long as the process parameters are properly controlled, flat and non stick slag trimming can be obtained. However, for high-speed tool steel and hot die steel containing tungsten, there will be erosion and slag sticking during laser cutting. Aluminum and alloy, aluminum cutting belongs to the melting cutting mechanism, the auxiliary gas is mainly used to blow away the molten products from the cutting area, usually can obtain better section quality. For some aluminum alloys, it is necessary to prevent the occurrence of intergranular microcracks on the surface of the slit. Copper and alloy, pure copper (red copper) can not be cut by CO2 laser beam because of its high reflectivity. Brass (copper alloy) uses higher laser power and auxiliary gas is air or oxygen, which can be used to cut thinner plates. Titanium and alloy, pure titanium can well couple the heat energy converted by focused laser beam. When oxygen is used as auxiliary gas, the chemical reaction is fierce and the cutting speed is fast. However, it is easy to form oxide layer on the cutting edge, which will cause over burning. For the sake of safety, it is better to use air as auxiliary gas to ensure the cutting quality. The laser cutting quality of titanium alloy commonly used in aircraft manufacturing industry is good. Although there is a little slag at the bottom of the cutting seam, it is easy to remove. Nickel alloy, nickel base alloy, also known as super alloy, has many varieties. Most of them can carry out oxidation melting cutting.
mini laser engraving machine for metal

It can cut all kinds of metal plates and pipes. It is mainly suitable for rapid cutting of stainless steel, carbon steel, manganese steel, galvanized steel, various alloy plates, rare metals and other materials;
plastic laser engraving machine for sale

Widely used in sheet metal cabinet, mechanical equipment, electrical equipment, lighting hardware, advertising signs, auto parts, display equipment, kitchen appliances, all kinds of metal products, sheet metal cutting and other industries