GALAGAR Smart 160 PFC Manual Técnico De Instrucciones página 31

a) electrode holder b) welding mask c) slag hammer
Electrode holder: a tool for clamping electrode and conducting current, mainly including
a)
300A type and 500A type.
Welding mask: a shielding tool for protecting eyes and face from injuring due to arc and
b)
spatter, including handholding type and helmet type. Colored chemical glass is installed on
the viewing window
of the mask to filter ultraviolet ray and infrared ray. Arc burning condition and weld crater
condition can be
observed from the viewing window during welding. Thus, welding can be carried out by
operators conveniently.
Slag hammer (peen hammer): for the use of removing slag crust on the surface of weld joint.
c)
Wire brush: for the use of removing dirt and rust at the joints of the workpiece before
d)
welding, as well as cleaning the surface of weld joint and the spatter after welding.
Welding cable: generally cables formed from many fine copper wires. Both YHH type arc
e)
welding rubber sleeve cable and THHR type arc welding rubber sleeve extra-flexible cable can
be used. Electrode holder and welding machine are connected via a cable, and this cable is
named as welding cable (live wire). Welding machine and workpiece are connected via
another cable (earth wire). The electrode holder is covered with insulating material performing
insulation and heat insulating.
Basic Operation of MMA
1) Welding joint cleaning
Rust and greasy dirt at the joint should be removed completely before welding in order to
implement arc igniting and arc stabilizing conveniently as well as ensure the quality of weld joint.
Wire brush can be used for condition with low requirement on dust removal; grinding wheel can
be used for condition with high requirement on dust removal.
2) Posture in operating
Take flat welding of butt joint and T-shaped joint from left to right as an example. (See Fig. 11-2)
The operator should stand at the right side of the working direction of weld joint with mask in the
left hand and electrode holder in the right hand. The left elbow of the operator should be put on
his left knee to prevent his upper body from following downwards, and his arm should be
separated from the costal part so as to stretch out freely.
SMART 160 PFC
Fig. 11-1 Tools for MMA
d) wire brush
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