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Tutorial: Engineering technology Topic: Welding with MAG system Prepared by: Ing. Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002.

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Presentation on theme: "Tutorial: Engineering technology Topic: Welding with MAG system Prepared by: Ing. Josef Martinák st. Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002."— Presentation transcript:

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2 Tutorial: Engineering technology Topic: Welding with MAG system 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.

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6 Booth instrument Wire is moved by shifting Work place is non movable Universal instrument Wire is moved by shifting Work place is mobile

7 Apparatus with small coil Wire is moved by pulling Longer distances Type Push-Pull Wire move is by push & pull Longer distances

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9  Drives coil with wire. For a smooth course of welding process a constant and continuous speed of wire feeding is important. As a feed drive are used DC derivation drives, drives with permanent magnets or high quality motors with disc rotor. These have a very long service life.

10  depth of penetration medium  width of weld medium  welding direction to the left  flat penetration  wide weld  Welding direction to the left  Deep penetration  narrow weld  Weld direction to the left PerpendicularPushed Pulled

11  Protects melted medium again surrounded air  Influence shape of weld  Protective gases are tasteless, colorless, odorless  Protective gasses are poisonless

12  Fault:  Draft (especially at construction sites) influences protective gas coverage  Result:  Insufficient gas protection creates weld air bubbles

13 Too small angle of opening – correct value is 40 o to 60 o Too blunt edge - big edge offset Too big edge overlap Welding on cambered bottom layer Correct procedure: Grinding off bottom layer before welding

14  Name Welding machines arrangements

15  DILLINGER, Josef. A KOL. Moderní strojírenství pro školu i praxi. 1. Praha: Europa- Sobotáles, ISBN  M. HLUCHÝ, J. KOLOUCH, R. PAŇÁK. Strojírenská technologie II


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