Titlebook: Laser Processing in Manufacturing; R. C. Crafer (Partner),P. J. Oakley (Consultant) Book 1993 Springer Science+Business Media Dordrecht 19

條街道往前推

Excimer lasers: current and future applications in industry and medicine, other manufacturing techniques. It is these applications on which we will concentrate. Shown in Table 9.1 are the binding strengths of some of the most common chemical bonds that hold atoms together to form molecules.

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Pulsed Nd:YAG lasers in manufacturing applications,ologies are changing too, the optimum choice of equipment changes with time. On balance, the trend is toward the laser. The manufacturing processes considered here are joining (welding, soldering and brazing), cutting, drilling and heat treatment. The most important joining process is welding.

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Continuous wave and ,-switched Nd:YAG lasers, at best), their .-switchability permits enhancement of peak powers, enabling them to perform some very demanding tasks. Their adaptability is enhanced due to their efficient transmission by fibre optics. They have found many varied applications throughout the world, some of which will be described in the following pages, namely:

Emmenagogue

An introduction to lasers,e, Excimer, etc. As an adjective it generally describes the use to which a laser (noun) can be put. Examples here would include materials processing (e.g. welding), ophthalmology, range finding, commun-ications, etc. This chapter introduces the physical ideas involved and some of the concepts and jargon to be encountered in later chapters.

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CO2 industrial laser systems and applications,ions..This chapter introduces the basic laser processing techniques of cutting, welding and heat treatment as they apply to the most common engineering materials, reviews system and nozzle features, and describes a number of actual systems in some detail.

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Practical aspects of laser processing,to be achieved. Laser processes are relatively new and are still developing rapidly, one result of which is that there is a lack of appreciation of the procedures and techniques that are available now, and will be available in the future, to ensure the effective use of the processes and the quality of the processed part.

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Background to laser processing,der all five as an overall process chain. With this in mind, this chapter examines each activity from a process engineering viewpoint and takes its examples from continuous power welding and surfacing using continuous carbon dioxide lasers.

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Beam transmission systems,pt is made to approach some general considerations of beam transmission systems, without resorting to the detailed theory of Gaussian optics which describes the propagation of laser beams. Reference is mainly to CO. laser systems, the type most commonly used for industrial materials processing. Many