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GAS METAL ARC WELDING - Practice Mode

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GAS METAL ARC WELDING
Practice Mode

1) What is the name of the welding defect, with weld metal contracting during welding process?

Distortion Excessive penetration Lack of penetration Porosity

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Correct Answer: Distortion

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1) What is the name of the welding defect, with weld metal contracting during welding process?

Distortion

Excessive penetration

Lack of penetration

Porosity

2) What is the name of the defect occuring to an unsteady hand in GMAW?

Over fusion Burn through Distortion Waviness of bead

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Correct Answer: Waviness of bead

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2) What is the name of the defect occuring to an unsteady hand in GMAW?

Over fusion

Burn through

Distortion

Waviness of bead

3) What defects occurs to a weld joint, if it is provided with insufficient heat input?

Lack of fusion Lack of penetration Lack of metal deposit Uneven bead deposit

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Correct Answer: Lack of penetration

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3) What defects occurs to a weld joint, if it is provided with insufficient heat input?

Lack of fusion

Lack of penetration

Lack of metal deposit

Uneven bead deposit

4) What gas combination will reduce spatter defect and improve arc stability in a MIG/MAG welding process?

CO2 / Neon Argon / CO2 Helium CO2 Argon / CO2 / O2

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Correct Answer: Argon / CO2 / O2

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4) What gas combination will reduce spatter defect and improve arc stability in a MIG/MAG welding process?

CO2 / Neon

Argon / CO2

Helium CO2

Argon / CO2 / O2

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