Welding Flashcard

Front

What does the "70" in E7018 represent?

Back

Tensile strength in psi

Front

What type of current can be used with an E7018 electrode?

Back

Both AC and DC

Front

What is the primary function of the flux coating on an E7018 electrode?

Back

Protect the weld pool from atmospheric contamination

Front

What is the recommended amperage range for a 1/8" E7018 electrode?

Back

117-125 amps

Front

What kind of electrode polarity is typically preferred when using an E7018 electrode?

Back

Direct Current Electrode Positive (DCEP)

Front

When preparing a T-joint with 3/16" mild steel, how should the two pieces of steel be positioned?

Back

At a 90-degree angle

Front

What should be the size of the fillet weld on a T-joint made of 3/16" mild steel?

Back

3/16"

Front

For a lap joint on 3/16" mild steel, how much overlap is typically recommended?

Back

1/2"

Front

In a lap joint, where should the weld bead be placed?

Back

On both sides of the top plate

Front

Why is it important to clean the metal surface of rust before welding a T-joint or lap joint?

Back

To prevent contamination of the weld