what's up guys my name is Jeff Ray
feature guest host here with weld.com
and on today's episode we're going to be
talking about Anviloy weld rods
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Anviloy is the internationally protected
brand name of the product group based on
tungsten alloys these are available in
various compositions such as Anviloy 1050
1150 1350 and 1450. these are adapted to
their respective application areas
they're also available as semi-finished
products and finished products Anviloy
also has a lot of products in the
foundry and die-cast industry with their
anviloy solid material solution the
enveloy weld rod is a welding filler
metal which is used to repair and where
protection coating of cast molds is made
from hard working tool steel in a tig
welding process we're going to talk
about the properties of android products
it's increased resistance to thermal
wear and burn cracks the increase in
erosion or corrosion resistance and
extends service life significantly the
reduction of soldering it improves the
heat dissipation in the casting tools
when choosing what tig torch to use we
want to go with the torch with the
largest gas coverage area to shield the
base material and the weld pool as best
we can
you can utilize several different
tungsten electrode types to weld envoy
weld rod most commonly used are the
violet e3 the gold wla15
and the blue wla 20 tungsten electrodes
it is highly recommended to use the
violet e3 tungsten electrode as it has
the highest service life it is also more
environmentally friendly health friendly
and achieves the better welding result
the diameter of the tungsten electrode
depends on the current during welding
for a low amperage range of 45 to 150
amps a diameter of 1.6 millimeter is
chosen and for a range of 75 to 175 amps
a 2.4 millimeter electrode is chosen
always grind at an angle of 60 degrees
to the tungsten electrode if you want to
weld with a 2.4 millimeter tungsten
electrode with less than 75 amps then
grind a tip of 30 degrees this will make
the arc more stable when grinding
tungsten electrodes keep the following
points in mind grinding grooves must be
a longitudinal direction of tungsten
electrode grind the groove as fine as
possible grind the tungsten electrode
with a diamond disc preferably
mechanical do not grind the tungsten
electrode on a belt sander or a slat the
cantilever length of the tungsten
electrode outside of the gas nozzle is
half the diameter of the gas nozzle in a
standard version with a gas nozzle
opening of 10 millimeters the maximum
length of the cantilever is 5
millimeters when using gas lines the
tungsten electrode sticks out up to 10
millimeters good gas protection is
crucial with properly adjusted gas pre
and post shock is very important the gas
pre-flow can ensure that no disturbing
oxides are produced at the beginning the
gas post ensures that the hot tungsten
electrode in the melting bath cools down
in an inner atmosphere in this way
oxidation on the weld and the tungsten
electrode is prevented the next welding
layer can therefore be applied without
any problem after welding the tungsten
electrode must be clean two gases can be
used argon and a mixture of argon with
up to two percent hydrogen the second
one can only be used for coat welding
not joint welding hydrogen is a reducing
gas that has a strong affinity to oxygen
this means that the hydrogen is directly
bonded to the oxygen so that no oxides
form on the welds and the welds remain
clean and clear if you want to connect
envelope tungsten products to tool steel
never use argon hydrogen the high carbon
equivalent to 4.5 times of the tool
steel will almost certainly cause cracks
in the weld preheating can be done in
three ways electrical oven and
oxy-acetylene oxy-acetylene preheating
or propane flames is the simplest but
also the riskiest way of preheating the
biggest problem will be uniform heating
what we have here is an automotive
casting die i've got one chucked up in
our rotary table this is going to allow
us to keep this part spinning so we
don't target one area for the heat and
allows the whole work piece to get hot
the surface needs to be absolutely clean
and free of grease depending on the size
of the work piece the surface must be
removed by 6 to 15 millimeters do not
start welding until the entire work
piece has the right temperature never
preheat with a gas burner at the exact
welding point the work piece absorbs
hydrogen which can lead to hydrogen
embrittlement and cracks after welding
maintain an inner temperature of 350
degrees celsius during welding minimum
temperatures should be 275 degrees
celsius this means that larger work
pieces have to cool down too much to be
reheated in between it can also be
useful to move the torch during welding
it is important that the movement during
the weld does not exceed the diameter of
the opening of the gas lens we got the
whole piece preheated here what are we
looking at on our weld spot
400 that's perfect we're going to be
utilizing the 2.4
millimeter Anviloy weld rod
we're also utilizing the
e3
2.4 millimeter tungsten
with the mk14
cup here so
large gas coverage there we want a lot
of gas coverage on this thing so we're
gonna start right here and fill her up
got the machine set at 152 amps the
range on this says 175 max with this
wire and tungsten size so i can back it
off if i need to a little bit but i
think this will be pretty good now we're
going to talk about the up and down
slope the increase ensures that the set
welding current does not apply directly
but rises slowly these parameters can be
very important when building small
pieces or sharp edges the lowering
ensures that when the tig process is
terminated the current does not suddenly
disappear but slowly returns to a
minimum set point this is to avoid
having a crater hole or a fisheye in
your weld the time span of the current
reduction is determined by the height of
the welding current with a high welding
current the time span is longer than
with a low welding current pulse welding
is acceptable when using Anviloy weld rod
as well as you can see
when i initiate the arc
the
up slope comes in real slow not too slow
but the downslope is really where i'm
letting it just feather back on that
pedal and let that down slope come come
down slowly we don't want no cracking in
this tig welding with Anviloy is
performed only on dc negative there's a
wide range of tig welding equipment that
can be used for this application the
choice depends on how large the work
piece is when welding with high currents
and long power cycles choose a slightly
heavier unit with a water cooling system
a smaller machine with a capabilities of
200 amps and is air cooled is sufficient
enough for smaller work pieces
all right we're just coming down to 290
300 so we'll go ahead and get the torch
back on it
got to keep the heat in this thing
to 360
370.
so
some more wiring here it's a bit hot so
i'm going to utilize my other glove to
rest my hand on here
the Anviloy weld rod is more susceptible
to corrosion of the wire tip and in the
weld bath it is therefore very important
to maintain a gas flow time of
approximately five seconds to prevent
the welding baths from being
contaminated at the start of the weld it
is very important to hold the tip of the
Anviloy weld rod inside the shielding
gas area prior to the arc initiating
while welding do not remove the tip of
the weld wire from the shielded gas zone
as well as when you're finished welding
continue to hold the wire inside the gas
coverage to ensure that it cools
completely and that there's no oxide
that can form on the end of the welding
rod the layer thickness during welding
depends to the chosen welding technique
if you add drop by drop the layer
thickness will be slightly smaller
because the welding bath will drain a
little more if the Anviloy weld rod is
held in the melting bath the layer
thickness will be higher with the
technique you must be careful to ensure
that the melting bath flows well
all right so i've got majority of this
thing filled last thing i've got to do
is the hard edges right here uh it's not
ideal to use that bigger size filler rod
so i went with the Anviloy weld rod 1.6
millimeter we're also going to turn the
heat down to about 100 amps and
yeah get this thing finished up
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now i'm going to use gravity to my
advantage here
because i was welding in the vertical
like uphill on this inside i wanted to
lay a little better so
i stopped it in the horizontal position
i'll get in there lay a little bit in
there
on that corner and uh we should be good
here then we're gonna
cool this thing down incrementally you
can't just leave it let it lay and cool
itself or else the welds can crack so
it's been a couple hours now and our
weld is cool i don't see any cracking no
oxidation in the weld as we followed all
the instructions from Anviloy this really
helps with production with not having to
spend money on buying new tooling if it
breaks or cracks as well as you can use
this as a coating and the cast material
actually doesn't stick to it as much as
the actual tool steel does let us know
in the comments down below if you've
ever used the Anviloy welding rod because
this material has been around for about 15
years now if you're interested in
purchasing some Anviloy weld rod you
can head over to Anviloy.com and check
out some of their other products but
until next time you can head over to
well.com and get connected with us
directly through the members section
we'll see you later!