Tutorial: Engineering technology Topic: Plasma cutting Prepared by: Ing. Josef martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002.

Prezentace na téma: "Tutorial: Engineering technology Topic: Plasma cutting Prepared by: Ing. Josef martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002."— Transkript prezentace:

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2 Tutorial: Engineering technology Topic: Plasma cutting Prepared by: 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.

3 Water cooling electrode Gas for plasma Cutting burner nozzle Pilot electric arc Plasma ray Cutting joint material Picture Plasma burner cutting

4 Chart: Plasma burner cutting Usage Material thickness Cutting speed Used gases Advantages Disadvantages Alloyed steels, non-iron metal, non-metals to To At separation(cutting) At high-quality cutting Argon, nitrogen or their mixtures, helium, compressed air All metals high-speed cutting with high quality cutting Necessary precautions against noise, dust, gases and UV radiation

5 Picture Cutting shapes at different cutting ways Plate gauge number in mm Oxygen flame cutting Plasma ray cutting Laser ray cutting Ways of material cutting

6  By plasma ray at temperature 30 000°C  It melts and immediately evaporates material at the place of ray incidence  Cutting is quick, cutting surroundings is not effected  Cutting width near burner is bigger

7 Controls and supervisory components are placed on front and back board(panel)

8  A……Incoming cord.  B……Connection G1/4 entrance of compressed cutting air.  C……Mains switch to connect machine to el. current.  E……Setting controller of working pressure.  F……Pressure gauge which shows set working pressure.  G……Multifunctional indicator – primarily indicates generator overheating.  H……Connection of cutting burner CEBORA. Burner can not be changed.  I……..Digester - (purging vessel). Moisture and medium impurities gather there.  L……Indicator of insufficient pressure of cutting media.  M……Pilot light indicates connection to mains by C switch.

9 This is the way of materials´ penetration over 4 mm thickness Shifting speed cannot be too high

10  Ground cable is connected to material  High cutting speed  Worn out of electrode

11  There is not one phase in mains  There is too high air pressure  Cutting medium is dirty  Purging vessel I is choked

12  Any flammable materials or objects should not be near  Don’t cut vessels contaminated by combustibles  Not to weld near gas welding set

13  What precautions to take while flame cutting?  What materials are cut by plasma flame?  What gases are used?

14  DILLINGER. KOLEKTIV. Moderní strojírenství pro školu i praxi. ISBN 9788086706191. pro konkurenceschopnost, ESF 2007 – 2013.  Metodika svařování – Odborný výcvik ve 3. tisíciletí Translation:  www.seznam.cz www.seznam.cz  www.slovnik.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.