Stick Welding
Review What are the 8 Steps for starting the torch? What do the letters PPE stand for? What is due on Friday? What PSI should acetylene be set to? When turning off the torch, what gas would you turn off first?
What to Wear Safety Glasses – clear or shaded Gloves Long sleeve shirt Jeans Leather, closed-toe shoes
Welding Helmets Welding Rule #1 You should wear a helmet when: DO NOT LOOK AT THE WELDING ARC! You should wear a helmet when: You are welding You are watching someone else weld
Welding helmets
Welding PPE Wear safety glasses and welding gloves Always use pliers to handle hot metal Don’t pick it up with your gloves Wear long jeans or overalls Wear close toed shoes, pull hair back and no loose clothes or jewelry
(Note) Yell “cover” before striking an arc. Continued Do not strike an arc or weld until you are sure those in the vicinity have protective equipment or will look in the other direction. (Note) Yell “cover” before striking an arc.
Arc Welding Using Electricity to fuse two pieces of metal together Needs three things to weld Heat source Shielding Filler material
Steps to Welding Make sure your area is clean and dry Place the ground clamp on the piece of metal or the table
Steps to Welding Place your electrode in the electrode holder
Steps to Welding Turn the Machine On NEVER lay down the electrode holder when the machine is one
Steps to Welding Before striking your arc yell COVER This warns people that you are about to weld
Striking an Arc 2 Methods to Striking an Arc Tapping Striking (Preferred) If the electrode sticks to the metal then turn the machine off
Welding Tips Use both hands to weld Your electrode is burning up, so move closer as you weld When your done with that electrode get a new one Let your metal cool down before starting another weld
Welding As you weld, the metal is melting To weld, drag the puddle of melted metal Move in half-circle shapes
After Welding Slag – black material covering the welding This can be cleaned off by: Chipping Hammer Wire Brush
Types of Welds Butt Joint – to pieces of metal butted together
Types of Welds Corner Joint
Types of Welds Lap Joint
Types of Welds T Joint
Types of Welds Edge Joint