Research of Laser cutting refractories performance

Bi-directional laser for differential absorption light detection and ranging, and will launch an emblem of the amount of gas resonance wavelength, then almost instantaneously transmit

a non-resonant wavelength, thus replacing the traditional dual laser devices. Two laser application in the free space optical channels: first, when the data stream is dense, continuous switching between the dual laser wavelength to supplement the data sets, one wavelength to another wavelength is the wavelength of the auxiliary; secondly, when the data and the flow rare, the laser wavelength becomes an equivalent division multiplexing transmission means for generating two independent data streams of different wavelengths.

It is estimated that the nation's ceramic device market is about 10 billion dollars, but due to the high cost of production of precision parts, further growth in the market is limited. Simultaneously or diamond abrasive grinding ceramic components is still the most common method of producing high mechanical strength and friability are often makes subsurface damage and breakage of the processing member. When using diamond tools, the technology will account for more than 75% of the total cost of processing a ceramic component.

One reason is that there are about $ 1 million for a diamond grinder. Although a laser machining has been studied as an alternative choice, but you may experience requirements for surface roughness between questions. Although the laser beam is not affected, but after treatment, some components exhibit a flexural strength decreases.

Laser cutting the material to be heated to above 1000 ℃ becomes soft ductile ceramic, boron nitride cutting tool and the three-dimensional soft heating layer removed. Experiment, the two structures that silicon nitrideceramics stabilized zirconia and local processing. Typical mechanical properties of a first material having a large class of structural ceramics, the latter having a coefficient of thermal expansion similar to steel, making it suitable for diesel engine parts.

In the intensity of the laser beam and laser processing conditions, such as precise control of laser assisted machining equipment to produce flake chip, rather than as the grinding process

that produces a powdery chips. Scanning electron microscopy showed that the wafer is relatively consistent and longer exhibit elastic deformation. The morphology of these chips is very important because it shows that laser assisted machining and grinding of different materials removal mechanism. Although early studies have shown that laser-assisted machining is not very appropriate, because under high temperature is raised, will shorten the life of the processing tools.