Discussion in 'Locomotive Engineering M.I.C' started by mark5379, Apr 7, 2008.
Does anyone know what fusible plugs are made out of?
all the ones ive seen are brass with the led core
More likely gunmetal instead of brass.
Some plugs have a thin coat of copper to protect the lead
The following document on the office of rail regulator website is possibly of interest:
they are generally brass with a lead core.
They're even known as "lead plugs" in some quarters.
Fusible plug that I have seen are made of gunmetal and have a ball in place held by solder. This means unlike the lead ones if fails completely. with sagging of the lead.
The Fusible Plugs that we manufacture today have a cast L.G.4 body, machined to suit the required pattern, filled with 'virgin' (99.99%) lead.
S.R types have a bronze 'bullet' within the lead 'fill', by design.
All types are most effective in their application.
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