Method of extruding and packaging a thin sample of reactive material including forming the extrusion die

Patent · Tue Jan 01 04:00:00 EST 1985

OSTI ID:865335

Lewandowski, Edward F ^[1]; Peterson, Leroy L ^[2]

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1. Westmont, IL
2. Joliet, IL

This invention teaches a method of cutting a narrow slot in an extrusion die with an electrical discharge machine by first drilling spaced holes at the ends of where the slot will be, whereby the oil can flow through the holes and slot to flush the material eroded away as the slot is being cut. The invention further teaches a method of extruding a very thin ribbon of solid highly reactive material such as lithium or sodium through the die in an inert atmosphere of nitrogen, argon or the like as in a glovebox. The invention further teaches a method of stamping out sample discs from the ribbon and of packaging each disc by sandwiching it between two aluminum sheets and cold welding the sheets together along an annular seam beyond the outer periphery of the disc. This provides a sample of high purity reactive material that can have a long shelf life.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4499708
• OSTI ID: 865335
• Country of Publication: United States
• Language: English

Related Subjects

/53/72/219/445/
active material
aluminum
aluminum sheet
annular
argon
atmosphere
cold
cut
cutting
die
disc
discharge
discs
drilling
electrical
electrical discharge
eroded
extruding
extrusion
extrusion die
flow
flush
forming
glovebox
highly
highly reactive
holes
including
including forming
inert
inert atmosphere
life
lithium
machine
material
material including
method
narrow
narrow slot
nitrogen
oil
outer
outer periphery
packaging
periphery
provides
purity
reactive
reactive material
ribbon
sample
sandwiching
seam
sheets
shelf
shelf life
slot
sodium
solid
spaced
stamping
teaches
welding
whereby