WELD 204 Shield Metal Arc Welding (SMAW)

Shield Metal Arc Welding (SMAW)

Name three types of power sources and what type of current the power source puts out

• Transformer (Alternating Current AC)

• Generator (Direct Current DC)

• Transformer Rectifier/Inverter (AC & DC)

DCSP

Direct Current Straight Polarity

DCEN

Direct Current Electrode Negative

DCRP

Direct Current Reverse Polarity

DCEP

Direct Current Electrode Positive

AC

Alternating Current

1F

Flat Fillet

1G

Flat Groove

2F

Horizontal FIllet

2G

Horizontal Groove

3F

Vertical Fillet

3G

Vertical Groove

4F

Overhead FIllet

4G

Overhead Groove

5 Essential Welding Properties

• Correct Electrode Size

• Correct Arc Length or Voltage

• Correct Electrode Angle

• Correct Current

• Correct Travel Speed

Classification of E-7018 Electrode

E - Electrode

70 - Tensile Strength - 70k PSI

1 - Position - All positions

8 - Polarity and Coating - AC and DCEP, Iron Power - Low Hydrogen

6011

C - AC, DC+

6012

D - AC, DC-

6013

E - All Currents

7014

E - All Currents

9015

A - DC+

8016

C - AC,DC+

7027

E - All Currents

7018

C - AC,DC+

6010

A - DC+

7024

E - All Currents