Page 225 - Mechanical Engineer's Data Handbook

MANUFACTURING TECHNOLOGY 213

5.12.4 Weld symbols

weld symbok, (Bs 499)
6mm fillet weld on one V butt weld on one side
side of joint

8 mm fillet weld all round U butt weld on one side
on one side with sealing run
\ I

6mm fillet weld on both 54 mm diameter spot
sides of joint welds at 70mm pitch

~
8mm fillet weld all round (50)25(50) Intermittent 8 mm fillet
on both sides welds, 25mm long, starting
with 50mm space and
50mm gaps

5.12.5 Gas-shielded metal arc welding

In this process an inert gas such as argon is used as a
flux; the electrode is a continuously fed consumable
wire. Two processes are used: ‘metal inert gas’ (MIG)
and ‘tungsten inert gas’ (TIG).
Welding processes

A table is given of all the welding processes, together
with recommendations for the use of a number of
these.