This slide discusses the various types of welding joints and where they are used. It also tells a beginner in welding the basic things to do like the use of CLAMS.

1. WELDING JOINTS AND
PROCESSES

2. OBJECTIVES
After studying this chapter, you will be able to:
 Identify different types of welds used with
various joints.
 Read and draw common welding symbols.
 Discuss advantages and disadvantages of
different
weld joints.
 List factors involved with joint design.

3. Welding joint: It is a point or edge where two or
more pieces of metal or plastic are joined
together.
They are formed by welding two or more work
pieces (metal or plastic) according to a particular
shape.

7. PAD WELDING
Pad welding: It is a layer deposited on a work piece
which not only protects the material from
corrosion caused by the flow of more or less
aggressive media (e.g. water, waste gases) but
also prolongs the life of pad welded work piece.
It is usually suitable for repair of parts damaged
by wear and tear or corrosion.

11. USE OF CLAMS IN WELDING
For welding activity to be up to standard and
prevent unnecessary weld defects as a beginner
in welding, CLAMS acronym is very important.
It stands for the following
C is for the welding current
L is for the length of Arc
A is for the electrode angle
M is for the manipulation of the electrode
S is for the speed of travel

12. LAP WELDING JOINT
Lap joint: a lap joint is a joint between two
overlapping members (work pieces) mostly used
because of its good mechanical properties
especially when welded on both sides. The
different types includes;
Bevel groove
J-groove
Flare bevel groove

15. BUTT WELDING JOINT
Butt joint: It is joint which is formed by placing the
ends of two parts together. In butt joint the two
parts lie on the same plane or side by side. It is the
most simplest type of joint used to join metal or
plastic parts together. Includes
Square butt
Bevel groove
V-groove
J-groove
U-groove, etc

17. TEE- WELDING JOINT
Tee-welding joint: This is a joint which is made
by intersecting two parts at right angle (i.e at 90
degree) and one part lies at the center of the
other. It is called a T joint as the two part welded
look like english letter ‘T’. Its types includes
Fillet
Plug
Slot
Bevel groove
J-groove

21. CORNER WELDING JOINT
Corner joint: It’s a joint formed by placing the edge of
two parts at right angle to each other. Two parts which is
going to be weld with corner joint forms the shape of L.
Fillet weld
Spot weld
 Square-groove weld or butt weld
 V-groove weld
Bevel-groove weld
U-groove weld
J-groove weld, etc

25. EDGE WELDING JOINT
Edge joint: It is a joint formed by welding the
edges of two parts together. This joint is used
where the edges of two sheets are adjacent and
are approximately parallel planes at the point of
welding. In this joint the weld does not
penetrates completely the thickness of joint, so
it cannot be used in stress and pressure
application.

26. The various types includes;
Square-groove weld or butt weld
 Bevel-groove weld
 V-groove weld
J-groove weld
U-groove weld
 Edge-flange weld
 Corner-flange weld, etc

29. OKEKE THOMPSON
TECH. INSTRUCTOR
DANGOTE ACADEMY
OBAJANA