In 1951, Babcock
& Wilcox installed the first American hydraulic Extrusion press
using the Ugine - Sejournet process for the extrusion of stainless
steel. This press operated until Babcock & Wilcox decided to exit
the steel making business in the mid 1980's. Now there is AMEREX.
1992, Amerex began renovation of this high speed press by providing
updated furnace controls, new burner systems, new instrumentation
and a new attitude. The Sejournet process uses glass as a lubricant,
the only economical high temperature material which survives the
2000 to 2300 degree temperature used to extrude steel.
have heard of or became familiar with the term extruded as the term
relates to consumer products such as storm doors of aluminum or
plastic home accessories. Few know that under the right conditions,
carbon, alloy, and stainless steels can be hot extruded. This process
is used to produce shaped steel products, either solid or of a tubular
configuration. This allows an end user to purchase material to a
near net shape rather than machine or fabricate standard rolled
shapes into a finished part. This near net shape becomes more critical
as the material needed becomes increasingly expensive per pound.
You purchase and ship only the material which you need, not that
which is machined away and discarded as scrap. Shapes with configurations
that are impossible to produce by rolling or forging methods are
the forte of extrusion. Furthermore, extrusion mill quantities can
be much smaller compared to rolling mills or forging shops. Tooling
costs are well below those of rolling mills, lead times are shorter,
thus inventory costs for the end user are lower.
When Babcock & Wilcox operated the extrusion facility, 70%
of the production capacity was devoted to seamless stainless steel
tubular products, i.e; redraw hollows, pipe and mechanical tubing.
AMEREX has added
to the capabilities of Babcock & Wilcox by adding
gun drills to further improve the concentricity on certain tubular
pipe sizes from 2" schedule 40 through 8" schedule 80
and mechanical tubing (hollow bar, redraw hollows) in sizes from
2" to 8" OD's and walls up to 1". In special circumstances,
expand the size ranges slightly.