1 / 12

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 : Welds´testing Prepared by: Ing . Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002

kato
Download Presentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Anglicky v odborných předmětech"Support ofteachingtechnicalsubjects in English“ Tutorial: Engineeringtechnology Topic: Welds´testing 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. Welds´ quality to bending • Weld’s quality depends on the type of used technology • Depends on prescribed conditions • Steel construction welding, piping welding, vessels of nuclear reactors • Quality of welds are important – it is necessary to test them

  3. Weldabilitytesting Mandrel Weld deposit Testing plate Testing plate Mandrel Carry rollers Weld cladding bending test Weld fracture testing

  4. Test samplesforbending test • Weldrootis checked at bending • Bend angle is to120° • Damagedweldis fractured

  5. Multilayerweld • Root run of filler • Weld testing is done by fracturing • At fractures are visible sand inclusions of coated electrode

  6. Types of weld beads • Weak current • Normal current • Heavy current

  7. Non-destructive testing - capillary • Spraying by red colour - weld • Weld washing – to remove red colour from surface • White colour spraying , red colour rises from weld by capillary action and if it is there – crack is shown.

  8. Ultrasonic test • Longitudinal defect detection– cavities, fissures etc. • Resistance and induction welding of steel pipe Input sound Failure echo sounds Limit echo of back wall Measuring instrument Probe Screen Defects Contact medium Tested product

  9. X-ray tests • Weld macrostructure • X-ray picture – processed by TV chain • Deffects - lighter parts • Control steel up to width of 80 mm, aluminium 800 mm Material defects X-ray lamp Picture amplifier Video camera Product X-ray radiation Testing chamber Product picture

  10. X-ray testing

  11. Questions and revision • Describe capillary testing • Describe X-ray testing • What does the weld resistance to bend depend on?

  12. 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.

More Related