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laser cutting machine is what and how to work?

laser cutting machine is what and how to work?

 

What is laser cutting machine?

 Laser Cutting machine

Laser cutting is a technology that uses a laser to cut materials, and is typically used for industrial

manufacturing applications, but is also starting to be used by schools, small businesses, and hobbyists. Laser

cutting works by directing the output of a high power laser most commonly through optics. The laser optics and

CNC (computer numerical control) are used to direct the material or the laser beam generated. A typical commercial

laser for cutting materials would involve a motion control system to follow a CNC or G-code of the pattern to be

cut onto the material. The focused laser beam directed at the material, which then either melts, burns, vaporizes

away, or is blown away by a jet of gas,leaving an edge with a high-quality surface finish. Industrial laser cutters are

used to cut flat-sheet material as well as structural and piping materials.

There are many different methods in cutting using lasers, with different types used to cut different material.

Some of the methods are vaporization, melt and blow, melt blow and burn, thermal stress cracking, scribing, cold

cutting and burning stabilized laser cutting.

http://www.laser-cutting-machine.net/what-is-laser-cutting-machine-2.html

 Laser Cutting machine 

Vaporization cutting

In vaporization cutting the focused beam heats the surface of the material to boiling point and generates a

keyhole. The keyhole leads to a sudden increase  in absorptivity quickly deepening the hole. As the hole deepens

and the material boils,vapor generated erodes the molten walls blowing ejecta out and further enlarging the hole.

Non melting material such as wood, carbon and thermoset plastics are usually cut by this method.

Melt and blow

Melt and blow or fusion cutting uses high-pressure gas to blow molten material from the cutting area, greatly

decreasing the power requirement. First the material is heated to melting point then a gas jet blows the molten

material out of the kerf avoiding the need to raise the temperature of the material any further. Materials cut with

this process are usually metals.

Thermal stress cracking

Brittle materials are particularly sensitive to thermal fracture, a feature exploited in thermal stress cracking.

A beam is focused on the surface causing localized heating and thermal expansion. This results in a crack that

can then be guided by moving the beam. The crack can be moved in order of m/s. It is usually used in cutting of

glass.

Stealth dicing of silicon wafers

The separation of microelectronic chips as prepared in semiconductor device fabrication from silicon wafers

may be performed by the socalled stealth dicing process, which operates with a pulsed YAG laser, the wavelength of

which is well adopted to the electronic band gap of silion.

Reactive cutting

Also called "burning stabilized laser gas cutting", "flame cutting". Reactive cutting is like oxygen torch cutting

but with a laser beam as the ignition source. Mostly used for cutting carbon steel in thicknesses over 1 mm. This

process can be used to cut very thick steel plates with relatively little laser power.

 Laser Cutting machine  Laser Cutting machine

How to choose laser cutting machine?

Choosing appropriate laser cutting machine is very important.With the increasingly fierce market competition

and the market demand for grade rising, such as metal laser cutting machine has been widely used. How to choose

the suitable laser cutting machine?

Here, the author try to solve this problem .As far as i am concerned,choose a suitable metal laser cutting machine

generally depends on the production materials.Overall, the need to consider the following issues:

1.Cutting seam thin: laser cutting slot is in general 0.10mm-0.20mm.

2.The smooth cutting surface: laser cutting cutting surface without burrs.

3.The small deformation:laser thin slit, speed, energy concentration, therefore, to be cutting material on the small

amount of heat, caused by the deformation of the material is very small.

4.Suitable for large products processing :Large products mould manufacturing cost is very high .Laser processing

does not need any mould manufacturing .Laser processing completely avoid forming material punching the edge collapse,

can greatly reduce the production cost of enterprises and enhance the grade of the product.

5.Very suitable for the development of new products, shorten the development cycle :Once the product drawings can be

formed immediately ,then, laser processing can be done immediately .

6.Save material:Laser processing by computer programming can maximize the utilization rate of materials.

Laser Cutting machine

Laser Cutting machine price

what is Laser Cutting machine


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