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DIN 8555
E 7 - UM 200 KP
Application / Properties:
Basic-covered austenitic
manganese steels electrode
for wear resistant hard
facing application. Since
the weld metal will adopt
high hardness by cold
working, it is
particularly suited to be
used on components subjected
to wear by heavy impact and
shock. The work piece sown
if necessary. In the case of
large work pieces must not
become too hot a during
welding and should be
allowed to cool manganese
steel, Such as jaw plate for
crushers, it is advisable to
weld them in a water bath.
High current densities and
wide weave beads must be
avoided. When building up
various layers, it is good
practice to deposit an
intermediate buffer layer
with 1803J weld metal.
In joint welding f
austenitic manganese steel.
it is preferable to use
1803J electrode.
Weld metal analysis in %
(typical values):
Mechanical Properties of
all-weld metal :
(single values are typical
values)
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Hardness as-welding: approx |
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( ~
200 HB ) |
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Hardness after work
hardening: approx |
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(
~ 400-500 HB ) |
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Amperage: |
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3.25 Ǿ |
4.0 Ǿ |
5.0 Ǿ |
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110-135 |
140-175 |
180-230 |
Materials:
Hardfacing an repair welding
of wear resisting parts made
of austenitic manganese
steels, Such as : jaws
plates for crushers, crusher
cones, pulverizing hammers,
beating arm, etc.
Rebaking : required
at 300°C to 350°C for 2hrs.
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