The influence of nozzles on high-power laser cutting

In laser cutting, there are many factors that affect the quality of laser cutting. The main factors can be summarized into two categories: one is affected by the performance of the processing system and the quality of the laser beam. Another category is affected by processing material factors and process parameters. The main factors affecting cutting quality in process parameters are as follows:

1, laser output power

2, cutting speed

3, focus position during cutting

4. Auxiliary gas and air pressure

5. Nozzle type and aperture

Let us discuss the role of nozzles in laser cutting together in this issue.

From the perspective of nozzle design and principle, the structure and form of the nozzle are closely related to the air flow and size of the auxiliary gas in laser cutting. The requirements match. At the same time, the size of the nozzle hole must allow the light beam to pass smoothly and avoid the light beam in the hole from contacting the nozzle wall. In practical applications, in order to reduce the damage of the reflected laser to the nozzle, the nozzle is generally made of copper with high laser reflectivity.

From a structural point of view, in order to achieve different airflows, the early common nozzle designs have the following 3 types:

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With the development of the laser industry, many improvements have been made to traditional nozzles to achieve stable airflow or high flow velocity and low air pressure. For example, single-layer and double-layer nozzles are commonly used at present:

The nozzle aperture size is marked on the nozzle surface.

Wrong use of nozzles or damaged nozzles will not only affect the transmission of the laser beam and cause the nozzles to become hot, but will also greatly affect the pressure and flow rate of the gas so that the molten material inside the cutting slit cannot be removed. Blowing off, so the cut section will be impenetrable or there will be burrs on the section, etc.

The high-power laser cutting process is complex and diverse, and different types of nozzles with different aperture sizes are used in the cutting process. Hongte Laser has set up a powerful cutting process database in the equipment operating system Smartmanager. When you are cutting a certain thickness of material, you only need to check the corresponding nozzle type in the 'global parameters' of the database.

About Hongte Laser

Hongte Laser is a joint venture of the Italian EL.EN Group A joint venture established by Chutian Laser Group is an enterprise specializing in Ru0026D and production of high-power laser cutting and welding. Currently, two major production bases are established in Wuhan and Wuhan. The Wuhan base occupies an area of u200bu200b20,000 square meters and has an annual production capacity of 1 billion yuan. The base is a major industrialization project introduced by the municipal government by the 'one matter, one discussionIn September 2018, the northern production base (Linyi, Shandong) will start construction, covering an area of u200bu200b20,000 square meters. It will be completed and put into production at the end of 2019, with an annual production capacity of 1.5 billion yuan.

Hongte Laser has introduced advanced Italian laser technology in an all-round way. Its core components adopt internationally renowned brands and implement European standards. Its product performance is stable and reliable, and its after-sales service is fast and standardized. It has sales and service centers in 40 cities including Beijing, Tianjin, Shanghai, Wuhan, Suzhou, Shenzhen, Hangzhou, Qingdao and more than 10 countries around the world.

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