But the potential cost and time savings associated with casting
a component was attractive enough to help persuade Lockheed to pursue the idea if it could find a metalcasting facility with the ability to do it.
Radial Heatsink, Armstrong Mold Corp., East Syracuse, N.Y.--This A356-T6 aluminum casting
boasts 1,750 individual pins that dissipate intense avionics heat.
In its core molding workshop for full mold casting
, Gebruder Gienanth-Eisenberg GmbH, Germany, makes sand cores for the casting
of cylinder crankcases, with an output of 400 cores per day.
Workers check the dimensions of each casting
to ensure the proper specifications are met and then send the castings
to Atchison's machining shop, where they are machined and painted.
Melting Efficiency And Molten Metal Quality Evaluation In Die Casting
The global casting
industry has invested heavily in green sand molding (ferrous) and SPM (nonferrous) as the dominant techniques for high-volume cored castings
An important step in lost foam casting
occurs at the compaction table, where compaction and vibratory forces cause the sand (or molding media) to flow around the pattern and into the internal passageways of the pattern and become rigid.
Until recent years, two primary technical issues limited the development of magnesium lost foam casting
. First, magnesium's low thermal heat content might cause incomplete fill (i.e.
The other benefits of selective casting
and machining is that the casting
process saves the time for machining the outer surface of each part, while machining the inner dimensions can attain tighter tolerances than prototypes made with conventional vacuum casting
On a random basis, we select a casting
from the finished product, cut it apart and subject it to a rigorous examination of its microstructure.
"When I first started, I literally called every casting
director in town asking for a job," Hardin recalls.
"Every time someone picks up a casting
, it's lost time," said Paul Barker Jr., primary consultant for Barker and Associates, Fort Wayne, Ind.