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Description¡G
CH-80 is a
low hydrogen type electrode which has high hardness.
These electrodes are martens tic structure, which
contains C, Cr and Mo. It has high hardness, so it is
suitable for intense soil abrasion. The deposited metal
is not machinable as welded condition.
Application¡G
Hard surfacing of pump
casings, cutter knives pump impellers, worn parts on
farm equipment, forestry tools, and loading machines.
Instructions for welding :
-
Preheating at more
than 150¢J is required.
-
It is recommended to
under lay with low hydrogen type electrodes (C-76),
in case the base metal is very harden able or
multi-layer welding is required.
-
Post heat at 500 ~
600¢J and slow cooling are recommended.
-
Dry the electrodes
before use, at 200 ~ 250¢J for 60 minutes.
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Typical weld
metal properties¡G (Weld Metal Analysis)
Carbon
¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.75
Manganese ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.82
Silicon ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.65
Chromium ¡K¡K¡K¡K¡K¡K¡K..¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.¡K¡K¡K 5.10
Molybdenum ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. 0.85
W ¡K¡K..¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K..1.15
Tungsten ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K. ----
Hardness of
weld metal:
650 ~ 800 V.H.N. ( HRC: 60
~ 64 )
Available diameter and recommended operating ranges¡G
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F.
& H. ¡V fillet |
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3.2 X350 m/m
4.0 X400 m/m
5.0 X400 m/m |
90 ~ 120 Amps
140 ~ 180 Amps
190 ~ 240 Amps |
|
Type
of power¡GA.C. or D.C.E.P.
Approvals¡G |
