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Anglicky v odbornch pedmtech"Support of teaching technical subjects in EnglishTutorial: Engineering technology

Topic: Weldstesting

Prepared by: Ing. Josef Martink st.

Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.

Welds quality depends on the type of used technologyDepends on prescribed conditionsSteel construction welding, piping welding, vessels of nuclear reactors Quality of welds are important it is necessary to test themWelds quality to bending

Weldability testing

Testing plateMandrelWeld depositTesting plateMandrelCarry rollersWeld cladding bending testWeld fracture testing

Weld root is checked at bendingBend angle is to120Damaged weld is fractured

Test samples for bending test

Root run of fillerWeld testing is done by fracturingAt fractures are visible sand inclusions of coated electrode

Multilayer weld

Types of weld beadsWeak current

Normal currentHeavy current

Spraying by red colour - weldWeld washing to remove red colour from surfaceWhite colour spraying , red colour rises from weld by capillary action and if it is there crack is shown.

Non-destructive testing - capillary

Longitudinal defect detection cavities, fissures etc.Resistance and induction welding of steel pipe

Ultrasonic test

ScreenDefectsTested productContact mediumProbeLimit echo of back wallFailure echo soundsInput soundMeasuring instrument

Weld macrostructureX-ray picture processed by TV chainDeffects - lighter partsControl steel up to width of 80 mm, aluminium 800 mm

X-ray tests

X-ray lampMaterial defectsPicture amplifierVideo cameraProductX-ray radiationProduct pictureTesting chamber

X-ray testing

Describe capillary testingDescribe X-ray testingWhat does the weld resistance to bend depend on?Questions and revision

DILLINGER. KOLEKTIV. Modern strojrenstv pro kolu i praxi. ISBN 9788086706191. pro konkurenceschopnost, ESF 2007 2013.Translation:www.seznam.czwww.slovnik.czJANATA, Petr. Handy slovnk technick anglicko-esk a esko-anglick. Plze: Nakladatelstv Fraus, 2000. ISBN 80-7238-075-3Lingea LEXIKON 5, Technick slovnk anglicko-esk a esko-anglick. 2010.

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