Tutorial: Engineering technology Topic: Beam welding Prepared by: Ing. Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/ je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.
Energy is transferred by laser or electron beam Melted material creates weld joint after cooling down Weld is narrow, additional material is not necessary Welding is usually done under protective gas
Beam focusing to point of 1 mm diameter will heat it up to °C Depth of weld depends on beam’s diameter speed of feed and laser efficiency
Welds all weld-able materials High speed Narrow welding width Small temperature deformation High tensile strength Velké investiční náklady Odstínění pracoviště proti uniknutí laserového paprsku
Electron beam achieves narrower and deeper welds It is an advantage to weld layer melt able metals (high melting temperature) Alloys covered by layer of difficult melt able oxide (aluminum) Field of using – aircraft building
Welding of difficult weld able metals, for example: titanium and its alloys High precision of beam’s guidance and high weld strength
High investment and operation costs Difficult preparation of welding parts Necessity of work place shielding against roentgen radiation
What are the advantages of electron beam welding?
DILLINGER, Josef. A KOL. Moderní strojírenství pro školu i praxi. 1. Praha: Europa- Sobotáles, ISBN M. HLUCHÝ, J. KOLOUCH, R. PAŇÁK. Strojírenská technologie II