Using 100% CO2 shielding gas tends to cause what in GMAW?

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Study for the GMAW Welding Level 2 Test. Master GMAW welding techniques with multiple choice questions and detailed explanations. Prepare confidently for your exam!

Multiple Choice

Using 100% CO2 shielding gas tends to cause what in GMAW?

Explanation:
Using shielding gas that is 100% CO2 changes the arc characteristics by increasing the arc voltage and heat input. That extra heat drives the molten metal deeper into the joint, producing greater penetration than with other shielding gas blends. So, the primary effect described here is deeper weld penetration. (CO2 can also raise spatter, but the standout impact for penetration is that it tends to be too deep.)

Using shielding gas that is 100% CO2 changes the arc characteristics by increasing the arc voltage and heat input. That extra heat drives the molten metal deeper into the joint, producing greater penetration than with other shielding gas blends. So, the primary effect described here is deeper weld penetration. (CO2 can also raise spatter, but the standout impact for penetration is that it tends to be too deep.)

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