Chapter 30 Flashcards
When using a lap joint, what angle should the electrode be held at?
45 degrees
15 degrees
90 degrees
60 degrees
45 degrees
Which is the most frequently used weld joint?
Corner
Butt
Lap
Tee
Butt
When should a butt joint be beveled?
When the material to be welded is greater than 3/16” thick
When using electrodes 6011, 6013 or 6018
When the project involves using overhead or vertical welds
When the material to be welded is greater than 3/16” thick
What weld is used for the construction of rectangular-shaped objects where the outside corners must have a smooth radius?
Corner
Bevel
Edge
Butt
Corner
Which of the following is not one of the 4 basic weld joints used in arc welding?
Corner
Splice
Lap
Tee
Splice
In this video, what does the gentleman suggest to help make welding a butt joint easier?
Use a 7018 rod
Use a higher amperage on your welder
Put a small gap between the pieces to weld
Tack the pieces together and use a back-weld to complete the bead
Put a small gap between the pieces to weld
According to this video, what is the easiest joint to weld?
Tee joint
Open corner joint
Closed corner joint
Lap Joint
Closed corner joint
When should you use your wire brush?
After welding to see the quality of your bead
Before welding to clean the metal
For industrial or manufacturing applications where inspections are needed
After welding to see the quality of your bead
Before welding to clean the metal
As you master the joints horizontally, what other two ways does he suggest you practice?
Overhead
Under water
Diagonal
Vertical
Overhead
Vertical
What joint is most commonly used to joint two pieces with differing thicknesses together?
Butt joint
Tee joint
Corner joint
Lap joint
Lap joint
True or False
When welding a butt joint on a thick plate or pipe, it is often impossible for the welder to get 100% penetration without some type of groove being used.
True
What is the area of the metal’s surface that is melted during the welding process?
Molten
Slag
Faying surface
Kerf
Faying surface
What joint commonly has defects including burnthrough, porosity, and cracking or incomplete penetration?
Butt joint
Lap joint
Tee joint
Corner joint
Butt joint
