Page 382 - ParkerBrassCatalog2010

Parker Hannifn Corporation
Parker Brass Products Division
Otsego, Michigan
Catalog 3501E General Technical
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Manufacturing Techniques
Parker Extruded fttings
Hexagon, round and shaped bars are extruded in the confguration
required, drawn to size, cut to length and straightened. First a solid
round billet (8 to 12 inches in diameter) is heated to the pliable state
and forced by pressure of approximately 80,000 pounds per square
inch through a die. The resulting continuous length of bar is cooled
and then drawn through dies to the desired external size. (The drawing
process also controls the temper.) After straightening, the bar is ready
for machining.
The process produces a dense, nonporous material somewhat
stronger in the longitudinal direction due to an orientated fow of the
grain.
Material used for Parker Brass Fittings
(Reference SAE J461)
Straight bodies: barstock CA 360 or CA 345
Shape bodies: extruded barstock CA 360
Shape bodies: forged CA 377
Nuts: barstock CA 360
Nuts: forged CA 377
Parker Forged Fittings
Material for forgings is extruded in round bars, cut to length and
straightened. (At this point in the process, forging rod differs from round
extruded machinable bars only in temper and chemical properties.)
After straightening, the bars are cut again into slugs (short lengths),
reheated to the pliable state and pressed under a pressure of
approximately 25,000 pounds per square inch between upper and
lower die cavities. After cooling the fash is trimmed away and the
forging blank is ready for machining.
This process of forming under extreme pressure produces a uniformly
dense material of exceptional strength. Because grain fow follows the
contour, the ftting has high impact strength and is more resistant to
mechanical shock and vibration.
Of the major brass fttings producers, only Parker offers elbows
and tees machined from both extruded and forged shapes.