Objective 02: Weld Joints and Weld Types

Question 1

What are the 5 basic joint types?

Answer 1

1. Butt
2. Lap
3. Tee
4. Corner
5. Edge

Question 2

What is this weld joint?

Answer 2

Butt Joint

Question 3

What is this weld joint?

Answer 3

Lap Joint

Question 4

What is this weld joint?

Answer 4

Edge Joint

Question 5

What is this weld joint?

Answer 5

Tee Joint

Question 6

What is this weld joint?

Answer 6

Corner

Question 7

When are Groove Welds used?

Answer 7

When the surfaces being joined are butted against each other in such a way that a groove is created.

Question 8

Groove Weld

Answer 8

Weldment created in a groove

Question 9

What preparation is necessary in order to create a Groove Weld?

Answer 9

The joining surfaces of one or both pieces are prepared using grinding, flame cutting, or some other means.

Question 10

What is this butt weld joint?

Answer 10

Double V

Question 11

What is this butt weld joint?

Answer 11

Bevel

Question 12

What is this butt weld joint?

Answer 12

J

Question 13

What is this butt weld joint?

Answer 13

U

Question 14

What is this butt weld joint?

Answer 14

Square

Question 15

What is this butt weld joint?

Answer 15

Double-U

Question 16

What is this butt weld joint?

Answer 16

Flare-Bevel

Question 17

What is this butt weld joint?

Answer 17

Scarf

Question 18

What is this butt weld joint?

Answer 18

Flare-V

Question 19

What is this butt weld joint?

Answer 19

V

Question 20

Describe a V-Groove

Answer 20

The 2 surfaces are machined flat and smooth at an angle (bevel). When the 2 surfaces are placed together, they form a single “V” shape. In some cases, the root of the “V” does not extend to the bottom surface of the material.

Question 21

Describe a Double V-Groove

Answer 21

The edges are beveled from both sides. When placed together, the 2 pieces form a “V” on both sides. Both sides are then welded.

Question 22

Describe a Bevel Groove

Answer 22

One edge is beveled and the other is flat

Question 23

Describe Square Groove

Answer 23

Both edges are flat at 90 degrees. This creates a bottomless groove, formed by slight separation of the pieces

Question 24

Describe U-Groove

Answer 24

Both edges are machined with a curvature that produces a “J” cross-section. When placed together they form a groove with a “U” contour

Question 25

Describe Doube U-Groove

Answer 25

Each piece is machined with a "J" contour from both sides. When brought together the edges form a "U" groove on each side. Welding is done on both sides.

Question 26

Describe J-Groove

Answer 26

One piece is machined from one side only with a "J" contour, while the other is flat at 90 degrees

Question 27

Describe Scarf Groove

Answer 27

The joining edges are machined flat, but at an angle

Question 28

Describe Flare-V Groove

Answer 28

2 surfaces with curved profiles are brought together to form a weld groove with curved sides

Question 29

Describe Flare-Bevel Groove

Answer 29

One edge has a curved profile, while the other is flat at 90 degrees

Question 30

What is the (numeric) term for this weld?

Answer 30

Single Groove

Question 31

What is the (numeric) term for this weld?

Answer 31

Double Groove

Question 32

Label this:

Answer 32

a. Weld Depth b. Root Opening

Question 33

Label this:

Answer 33

a. Reinforcement b. Melt Through

Question 34

Label this:

Answer 34

a. Groove Angle b. Groove Depth

Question 35

Weld Root

Answer 35

The bottom edge of a weld or the deepest point of a weld

Question 36

Root Opening

Answer 36

The space intentionally left between joined surfaces before welding which is also visible when the weld does not fully penetrate the material

Question 37

Weld Depth

Answer 37

The distance from the surface of the material to the root of the weld

Question 38

Reinforcement (Welding)

Answer 38

The specified height of the weld above the surface of the material

Question 39

Melt Through (Welding)

Answer 39

The thickness of weld, measured from the root of the weld to the material surface, when the root extends beyond the surface

Question 40

When are Fillet Welds used?

Answer 40

When the configuration of the joining pieces creates 2 weld surfaces, which are 90 degrees to each other

Question 41

Fillet Weld

Answer 41

Weld deposited into a 90 degree joint and assumes a somewhat triangular cross-section.

Question 42

All-Around/Box Weld

Answer 42

A continuous fillet weld, used to weld a vertical post to a flat plate, that travels around corners

Question 43

What kind of Fillet Weld is this?

Answer 43

All-Around/Box Weld

Question 44

Label this:

Answer 44

a. Throat b. Toe c. Leg

Question 45

When are Staggered Intermittent Fillet Welds used?

Answer 45

Where the strength of the joint is not crucial or where complete sealing of the joint is not necessary

Question 46

What must a welder know in order to successfully produce Staggered Intermittent Fillet Welds?

Answer 46

The lengths of the individual welds and the pitch.

Question 47

Pitch (Welding)

Answer 47

The distance between the mid point of adjacent welds.

Question 48

Are intermittent welds always staggered?

Answer 48

No

Question 49

Label these measuerments:

Answer 49

a. Pitch b. Length

Question 50

Plug and Slot Welding

Answer 50

The joining of 2 relatively flat pieces with a series of small welds that are deposited into drilled plugs or machined slots in 1 piece.

Question 51

When Plug and Slot Welding, what characterizes the piece with the holes and the holes?

Answer 51

1. Piece is usually thin 2. Sides of the hole may be bevelled or perpendicular

Question 52

How does a Welder know how deep the welds must be within the plugs and slots when Plug and Slot Welding?

Answer 52

Information provided on the Welding Symbol

Question 53

What type of weld is this?

Answer 53

Plug Welds

Question 54

What type of weld is this?

Answer 54

Slot Weld