Linde BOC RAPTOR, Руководство по эксплуатации

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Tungsten tip preparation
= Diameter
Taper length
2–3x Dia
Flat
1/4–1/2x Dia
DCSP (EN) or DCRP (EP)
Max. ball
1x Dia
ACHP General Purpose
Ball tip by arcing on clean metal at low current
DCRP (EP) then slowly increase current to form
the desired ball diameter. Return setting to AC.
Tungsten grinding
Shape by grinding
longitudinally (never
radially). Remove the
sharp point to leave a
truncated point with a flat
spot. Diameter of flat spot
determines amperage
capacity (See below). The
included angle determines
weld bead shape and
size. Generally, as the
included angle increases,
penetration increases and
bead width decreases. Use
a medium (60 grit or finer)
aluminium oxide wheel.
Tungsten extension
General
purpose
3x Dia
Standard Parts
Tungsten extension
General
purpose
3x Dia
Maximum
6x Dia
Gas Lens Parts
(in draft free areas)
Tungsten electrode tip shapes and current
ranges
Thoriated, ceriated, and lanthanated tungsten
electrodes do not ball as readily as pure or
zirconiated tungsten electrodes, and as such are
typically used for DCSP welding. These electrodes
maintain a ground tip shape much better than
the pure tungsten electrodes. If used on AC,
thoriated and lanthanated electrodes often spit.
Regardless of the electrode tip geometry selected,
it is important that a consistent tip configuration
be used once a welding procedure is established.
Changes in electrode geometry can have a
significant influence not only on the weld bead
width, depth of penetration, and resultant quality,
but also on the electrical characteristics of the arc.
Below is a guide for electrode tip preparation for a
range of sizes with recommended current ranges.
Electrode
diameter
(mm)
Diameter
arc tip
(mm)
Constant
included
angle,
(degrees)
Current
range
(A)
1.0 0.125 12 2 – 15
1.0 0.250 20 5 – 30
1.6 0.500 25 8 – 50
1.6 0.800 30 10 – 70
2.3 0.800 35 12 – 90
2.3 1.100 45 15 – 150
3.2 1.100 60 20 – 200
3.2 1.500 90 25 – 250