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Hard surfacing of upper rollers and sprockets of
bulldozers. For metal-to-metal wearing.
Characteristics on usage
HF-350 is electrode for metal-to-metal wearing whose hardness and toughness are well
It is also applicable to abrasion accompanied by moderate impact.
Machining the weld metal is applicable, and the hardness can be increased by quenching
Notes on usage
Preheating is unnecessary in general. However, large size casting steels and forgings, low
alloy steels, or high carbon steels should be preheated at 150°C and higher temperatures on
As the machining may be difficult due to hardening in the case of high cooling speed, apply
the preheating or immediate post weld heating.