Classification according to single and double nozzle

Generally, laser cutting nozzles are divided into single and double layers. Single layer nozzles are used for melting and cutting, that is, air and nitrogen are used as auxiliary gases, and they are usually used for cutting stainless steel, aluminum alloy, brass, etc; The double-layer nozzle is generally used for oxidation cutting, that is, oxygen is used as auxiliary gas, which is usually used for cutting carbon steel.

According to the air velocity passing through the nozzle

In terms of the brand, shape and model of the jettison nozzle, there are two mainstream nozzle designs in the market at present: "low-speed nozzle" (the gas velocity is less than the sound velocity) and "high-speed nozzle" (the gas velocity is close to the sound velocity). The above two nozzles are "subsonic nozzles", because the gas velocity passing through the nozzle is less than the sound speed.

By analogy, we can know that a supersonic nozzle is a nozzle whose gas velocity through the nozzle is greater than the sound speed. Its structure can be simply expressed as follows:

The special structure of the supersonic nozzle can convert almost all the pressure of the auxiliary gas into dynamic energy, blow off the slag, and achieve a more perfect laser cutting surface.

To sum up, users can choose whether to use supersonic nozzle according to the suggestions of after-sales engineers and the model of the purchased Ourui laser cutting machine. After all, the cutting effect of supersonic nozzle is very good.