Miller 900019 Panduan Instalasi dan Pengoperasian - Halaman 17
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To
progress
with this
practice
it is necessary
now
to
move
the
plates
into vertical
position.
The
details
of
horizontal
bead
welds
are
given
in
Figure
21.1.
I~
~
VERTICAL PLATE
DIRECTION OF WELDING
~
(4
9oi\~
TILT 15~
TOWARP~JJ~
DIRECTION OF WELDING
~5&l
Figure
21.1
Welding
vertically
may
be
performed
either
by
carrying
the weld
upward
or
starting
from the
top
and
welding
down. It is
generally
conceded
that
working upward
is
easier
and
therefore,
bead welds
in this
manner
should be
practiced.
A method for
making
weave
beads is illustrated
in
Figure
22.1.
,~
~l+H~----
I~
~E
I~
b-a
WEAVE BEAD
fWIDE
Figure
22.1
Since bead welds
are
of
limited
practical value,
this
experience
must
be extended
by practicing
on
butt welds in the vertical and
horizontal
pat
terns.
WHIPPING LiP
MOTION
Figure
23.1
provides
information suitable for
a
single
pass vertical butt weld
or
the first pass of
a
multiple layer deposit.
Two methods of
deposit
ing
the
subsequent layers
are
given
in
Figures
24.1 and
24.2.
ARROWS SHOW LIFTING
UP OF ELECTRODE AND
RETURN TO CRATER
Figure
23.1
Figure
24.1
I
Figure
24.2
IOM-114A-Page
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