Welding symbols on drawings - .:YUSUF MANSUROGLU - P

13 Stud welds
The stud welding processes, which are used to attach studs to a component
in order to locate or secure other parts, are generally applied
to studs ranging from 1.6 mm (1/16 in) to 19 mm (3/4 in) in diameter.
Studs larger than this can be attached by manual welding using
covered electrodes to deposit a fillet weld. These welds are indicated
on a drawing by the fillet weld symbol and the weld all round
<strong>symbols</strong> shown for the ISO example in Fig. 13.1.
Illustration Symbol
13.1 Fillet weld and peripheral weld <strong>symbols</strong> for stud welding attached by
MMA (SMAW) process (ISO).
Stud welds are not specifically mentioned in ISO 2553, but the
standard includes a weld symbol for a surface joint as shown in Fig.
13.2. This appears to show a stud weld. The application of this
symbol on a drawing is not illustrated in ISO 2553 but, presumably,
the two horizontal lines are placed above and parallel to the reference
line.
Description
Surface joint
The AWS symbol for a stud weld consists of a circle with a cross
in it. The standard specifies that the arrow of the welding symbol
shall point clearly to the surface to which the stud is to be welded.
Therefore the symbol is always placed below the reference line to
indicate that the weld is on the arrow side. The AWS standard illustrates
the use of multiple arrow lines pointing to different rows of
studs with their locations indicated on the drawing. The diameter
of the stud is placed to the left of the weld symbol and the spacing
Illustration Symbol
13.2 Weld symbol for a surface joint (ISO).
Stud welds 37