WEL 248 - Adv Arc I GMAW Alum Unlimited

1. Recall the safety rules for using shielded metal arc welding equipment.
   1. Describe safety rules when setting up SMAW equipment.
   2. State what personal safety gear is worn when using SMAW equipment.
   3. Explain how to prevent electrical shock when using equipment.
   4. Practice safety in all work situations.
2. Demonstrate the proper set up, start up and shut down procedures of arc welding equipment.
   1. Illustrate proper set up of equipment.
   2. Explain the two types of welding machines.
   3. Show how to set current and polarity.
3. Differentiate the function of AC and DC current as it relates to different polarities.
   1. Explain the difference between AC and DC current.
   2. Select the electrodes used with AC polarity.
   3. Select the electrodes used with DC polarity.
4. Identify electrodes and how they are used with different polarities.
   1. Study video #3 and complete workbook assignment.
   2. Relate how electrode size is determined.
   3. Explain the numbers on the electrodes as to what they mean.
   4. Identify the characteristics for each electrode.
5. Prepare 3/8” x 5” x 5” plate with 45 degree included angle bevel with line cutter.
6. Set up 3/8” x 5” x 5” plate with 1/4” root opening and 1/4” x 1” x 6” backup strip.