What are the main parameters of the advertising word laser cutting machine cutting process?

1, cutting speed

Given the laser power density and material, the cutting speed is in accordance with an empirical formula. As long as the threshold is above the cutting speed of the material is proportional to the laser power, ie increasing the power density, the cutting speed can be increased, and the cutting speed is also the density of the material being cut. The thickness is inversely proportional to the factors that increase the cutting speed: (1) increase the power (500-2000w); (2) change the beam mode; (3) reduce the size of the focused spot.

For metal materials, other process variables are preserved, and the laser cutting speed can have a relative adjustment range while still maintaining a satisfactory cutting quality. This adjustment range is wider than the original when cutting thin metal.

2, the focus position

After the laser beam is condensed, the spot size is proportional to the length of the lens. After the beam is focused by the short focal length lens, the spot size is small, and the power density at the focus is high, which is good for material cutting, but its disadvantage is that the depth of focus is very high. Short, the adjustment margin is small, generally suitable for high-speed cutting of thin materials. For thick workpieces, because of the wide focal length of long-focus lenses, as long as there is sufficient power density, it is suitable for cutting it, due to the power at the focus. The highest density, in most cases, when cutting, the focus position is just on the surface of the workpiece, or slightly below the surface of the workpiece, ensuring the constant position of the focus and the workpiece is an important condition for obtaining stable cutting quality, sometimes due to cooling during lens operation. If it is not good and is heated, it will cause a change in focal length, which requires timely adjustment of the focus position.

3. Auxiliary gas

The auxiliary gas is sprayed coaxially with the laser beam to protect the lens from contamination and blow away the slag at the bottom of the cutting zone. For non-metal and part of the metal material, compressed air or inert gas is used to remove the melted and evaporated material while suppressing excessive cutting area. combustion.

4. Auxiliary gas pressure

Most metal laser cutting uses reactive gas (oxygen) to form an oxidative exothermic reaction with the hot metal. This part of the additional heat can increase the cutting speed by 1/3-1/2. When cutting thin sheets at high speed, higher gas is required. The pressure prevents the back of the incision from slag, and when the material thickness or cutting speed is slow, the gas pressure can be appropriately lowered.

5, laser output power

The quality and mode of the laser power will have an important impact on the cutting. In actual operation, the maximum power is often set to obtain a high cutting speed or to cut a thicker material.

What is the laser cutting machine cutting process for advertising materials of different materials?

1. Carbon steel advertising word laser cutting machine cutting process:

The modern laser cutting system can cut the maximum thickness of the carbon steel plate up to 20mm. The slit of the carbon steel cut by the oxidized and melted laser cutting machine can be controlled in a satisfactory width range, and the slit of the thin plate can be narrowed to about 0.01 mm.

2, stainless steel advertising word laser cutting machine cutting process:

Fiber laser cutting machines are an effective processing tool for the manufacturing industry. Under the strict control of the heat input in the laser cutting process, it is possible to limit the heat affected zone of the trimming to become small, thereby more effectively maintaining the good corrosion resistance of such materials.

3, alloy steel advertising word laser cutting machine cutting process:

Most alloy structural steels and alloy tool steels can achieve good trim quality by laser cutting. Even for some high-strength materials, straight, non-stick slash trimming is achieved as long as the process parameters are properly controlled. However, for high-speed tool steels and hot-die steels containing tungsten, there is corrosion and slag formation during laser cutting.

4, aluminum and alloy advertising word laser cutting machine cutting process:

Aluminum cutting is a melt cut, and the auxiliary gas used is mainly used to blow away the molten product from the cutting zone, and generally a good cut surface quality can be obtained. For some aluminum alloys, care should be taken to prevent intergranular microcracks on the surface of the slit.

5, copper and alloy advertising word laser cutting machine cutting process:

Pure copper (copper) cannot be cut with a CO2 laser beam because of its high reflectivity. Brass (copper alloy) uses a higher power laser cutter with an auxiliary gas using air or oxygen to cut thinner sheets.

6, titanium and alloy advertising word laser cutting machine cutting process:

Pure titanium can be well coupled to the thermal energy of the focused laser beam. The chemical reaction is intense when the auxiliary gas is oxygen, and the cutting speed is fast, but it is easy to form an oxide layer on the trimming edge, which may cause overburning. For the sake of safety, it is better to use air as an auxiliary gas to ensure the quality of the cut. The laser cutting quality of titanium alloy commonly used in aircraft manufacturing is good. Although there is a little stickiness at the bottom of the slit, it is easy to remove.

7, nickel alloy advertising word laser cutting machine cutting process:

Nickel-based alloys are also called superalloys and come in many varieties. Most of them can perform oxidative melt cutting.

Overview D601 metal laser cutting machine is a new cutting machine developed by our company for the market demand of thin steel plate, knife template and acrylic plate in large-area cutting. Its performance is stable, the working width is large, and the price is affordable. In order to meet the needs of various processors, the equipment is made of heavy-duty materials and castings and finished with metal baking varnish. The equipment runs smoothly, with high precision, equipped with intelligent surface tracking system, fully enclosed and no light loss design, ensuring the reliability of the machine. Sexuality, stability, easy-to-use and friendly man-machine dialogue interface can achieve high-quality processing results for all walks of life.