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Welding: Principles and Applicatio...
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Welding: Principles and Applicatio...
The shielding gas selected can affect what properties of a weld?
The properties affected by the shielding gas selection process of a weld.
The major properties of a weld that can be affected by the selection of shielding gas are as follows:
- Reactivity of shielding gas:
If the selected shielding gas that is reactive to the weld metal it can affect the quality of weld and can form some reaction.
- The effect of shielding gas on the welding speed:
The heavier and hard to handle shielding gas must be handled with care. For this, the travel speed must be optimum and considerably slow compared to light and easily handled shielding gases like O2.
- The molten metal fluidity of the material:
Heavy shielding gas also affects the fluidity of weld metal inside the cavity, as because of high density the metal cannot penetrate easily through the heavy shielding gas...
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