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Anglicky v odborných předmětech "Support of teaching technical subjects in English “

Anglicky v odborných předmětech "Support of teaching technical subjects in English “. Tutorial : Engineering technology Topic : Laser cutting Prepared by: Ing . Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002

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Anglicky v odborných předmětech "Support of teaching technical subjects in English “

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  1. Anglicky v odborných předmětech"Support ofteachingtechnicalsubjects in English“ Tutorial: Engineering technology Topic: Laser cutting Preparedby: Ing. Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

  2. At fusible laser cutting, melted material is blown out of cutting by inert gas, mostly by nitrogen or argon. Laser jet Cutting jet lense Cutting gas Gas flow Pointed laser jet material Cutting joint Picture 1 Fusible laser jet cutting

  3. Chart: Laser jet cutting Usage All kinds of steel, aluminium alloys, plastics, ceramics Material thickness (examples) 10 mm for steel 0,1 mm for plastic films Cutting speed For steel For plastic films Cutting gas Nitrogen, argon, oxygen Advantages Cutting of many different materials, high-quality cutting, high cutting speed Disadvantages Necessary precautions, expensive cutting machine

  4. Laser cuts examples Picture 2 Laser cut products

  5. Suitable materials for flame cutting • High alloyed steels • Aluminium alloys • Semiconductor materials • Plastics and other materials • Ceramic materials

  6. Cutting systems • Laser Trulaser 5030 Clasic • Truamtic L3050 • Both with CO2 and 5000 W output

  7. Metal materials´ cutting • Structural steels – carbon and low alloyed • Aluminium alloys • Brass

  8. Advantages of laser jet cutting • Smooth cutting • Cutting surface does not need to be machined additionally • It is possible to cut very small holes and difficult forms

  9. Necessary precautions • By laser cutting fume and irritant gases are produced • These must be extracted

  10. Questions and revision • Describe laser jet cutting head • What kinds of cutting gasesdo we use? • Name disadvantages of laser jet cutting?

  11. Literature • DILLINGER. KOLEKTIV. Moderní strojírenství pro školu i praxi. ISBN 9788086706191. pro konkurenceschopnost, ESF 2007 – 2013. Translation: • www.seznam.cz • www.slovnik.cz • JANATA, Petr. Handy slovník technický anglicko-český a česko-anglický. Plzeň: Nakladatelství Fraus, 2000. ISBN 80-7238-075-3 • Lingea LEXIKON 5, Technický slovník anglicko-český a česko-anglický. 2010.

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