Process for casting hard-faced, lightweight camshafts and other cylindrical products

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870616

Hansen, Jeffrey S ^[1]; Turner, Paul C ^[2]; Argetsinger, Edward R ^[2]; Wilson, Rick D ^[1]

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1. Corvallis, OR
2. Albany, OR

A process for casting a hard-faced cylindrical product such as an automobile camshaft includes the steps of: (a) preparing a composition formed from a molten base metal and an additive in particle form and having a hardness value greater than the hardness value of the base metal; (b) introducing the composition into a flask containing a meltable pattern of a cylindrical product such as an automobile camshaft to be manufactured and encased in sand to allow the composition to melt the pattern and assume the shape of the pattern within the sand; and (c) rotating the flask containing the pattern about the longitudinal axes of both the flask and the pattern as the molten base metal containing the additive in particle form is introduced into the flask to cause particles of the additive entrained in the molten base metal to migrate by centrifugal action to the radial extremities of the pattern and thereby provide a cylindrical product having a hardness value greater at it's radial extremities than at its center when the molten base metal solidifies.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by Secretary of (Washington, DC)
• Patent Number(s): US 5560420
• OSTI ID: 870616
• Country of Publication: United States
• Language: English

Related Subjects

process
casting
hard-faced
lightweight
camshafts
cylindrical
products
product
automobile
camshaft
steps
preparing
composition
formed
molten
base
metal
additive
particle
form
hardness
value
introducing
flask
containing
meltable
pattern
manufactured
encased
sand
allow
melt
assume
shape
rotating
longitudinal
axes
introduced
particles
entrained
migrate
centrifugal
action
radial
extremities
provide
center
solidifies
particle form
base metal
metal containing
longitudinal axes
composition formed
cylindrical product
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