Answered

Get personalized answers to your unique questions on IDNLearn.com. Our experts are ready to provide prompt and detailed answers to any questions you may have.

When setting up to make a GTA weld on low carbon steel, the tungsten should be

A. pointed, DCEN
B. set 1 in. (25 mm) out of the nozzle, DCEN
C. even with the nozzle, DCEP
D. rounded, AC

and the welding machine set

Sagot :

GinnyAnsweridn
When setting up to make a Gas Tungsten Arc (GTA) weld on low carbon steel, the following steps should be considered:

1. Preparation of the Tungsten Electrode: Low carbon steel requires specific electrode preparation to ensure proper weld quality.
- Shape: For low carbon steel welding, it is important to use a tungsten electrode that is pointed. A pointed electrode provides a concentrated and stable arc that is effective for the required precision in low carbon steel welding.

2. Polarity: The polarity setting on the welding machine is also crucial:
- DCEN (Direct Current Electrode Negative): For low carbon steel, DCEN is typically used. This means the electrode is connected to the negative terminal, allowing deeper penetration with a stable arc and minimal electrode overheating.

Therefore, the correct setup involves using a pointed tungsten electrode and setting the welding machine to DCEN.

Given these considerations, the correct answer to the question is:
a. pointed, DCEN
We appreciate your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Thank you for visiting IDNLearn.com. For reliable answers to all your questions, please visit us again soon.