The Difference Between Metal Laser Cutting Machine And CNC Plasma Cutting Machine

- May 19, 2018 -

A metal laser cutting machine scans the surface of a material with a laser beam of high power density, heats the material to several thousands to tens of thousands of degrees Celsius in a very short time, melts or gasifies the material, and then uses the high pressure gas to melt or vaporize the material from Blow in the slit to achieve the purpose of cutting material. Laser cutting, because the invisible beam is used instead of the traditional mechanical knife, the mechanical part of the laser cutter head has no contact with the work, and the work surface will not be scratched during the work; the laser cutting speed is fast, the incision is smooth and flat, and generally does not need Subsequent processing; small cutting heat affected zone, small plate deformation, narrow slit; no mechanical stress, no cutting burrs; high precision, good repeatability, no damage to the surface of the material; CNC programming, can process any plan, can Cutting the entire board with a large format does not require the use of a mold, which saves time and money.

CNC plasma cutting machine is a kind of thermal cutting equipment. Its working principle is to make use of the heat of high temperature plasma arc to partially melt the metal at the notch of the workpiece, and use a high-speed plasma momentum to exclude the molten metal to form a notch. With the development of plasma cutting, the working gas that can be used has a significant impact on the cutting characteristics of the plasma arc as well as the cutting quality and speed. Common plasma arc working gases include argon, hydrogen, nitrogen, oxygen, air, water vapor, and certain mixed gases. Plasma cutting machines are widely used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, engineering machinery, steel structures and other industries.

About the cutting accuracy, the plasma is about 1mm, the laser energy can reach within 0.2mm; in the cutting efficiency, the laser is superimposed with the speed and effect, cutting 1mm plate up to 26 meters per minute, it can be said that the plasma is only rough processing, the latter also need Grinding for secondary processing is cumbersome, and laser cutting machines are finely processed and completed once.

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