Ferrous caster Willman Industries Inc., Cedar Grove, Wis., has signed an agreement to purchase a new core blower
, according to the equipment supplier.
In the hotbox and warmbox systems, sand can be mixed in a muller or mixer and then blown into the corebox using a core blower
, or in the case of oil sand, a core shooter.
(2.54 x 2.54-cm) tensile biscuit, a two-cylinder water jacket corebox was produced that could be utilized on a standard core blower
One was used to measure bulk-cure using core tensile specimens or "dogbones." The gas and purge times on the core blower
were reduced until only a portion of the dogbone would cure with loose, unbonded sand remaining in the box.
As a nobake machine, the core blower
doesn't require gas, so money doesn't have to be spent on supporting air system equipment.
For jobbing foundries, Palmer Manufacturing & Supply exhibited two new core machines: the Palmer-Davcor CM-CB-Jobber coldbox machine it recently introduced to the U.S., and the CM Series nobake core blower
. The coldbox unit is designed for low-to-medium volumes and is available in five sizes that range from 10-90 lb single blows.
Prepare each sand mix with the resin to be tested, and then turn the purge time on the lab core blower
down to one-third of its original setting.
The new system will not react with air or moisture in an open environment, which reduces mixer core blower
and tooling cleaning.
For decades, the vast majority of cores have been machine produced using either a jolt table, shell core, sand slinger or core blower
. With a jolt machine, the corebox filled with sand is raised and dropped against the machine base, compacting the sand around the pattern.
In the cleaning room, the firm is installing a spinner-hanger blaster with plans of robotic grinding units, and expects to reconfigure its core room and add production core blowers
The LL10 and LL20 can accept existing coreboxes from many standard shell core blowers
with only simple modifications required.
In addition to demonstrations of the SLC series core blowers
and information on the new Key-Core line installation at Eisenwerk Bruhl and core production cells at several brake disk foundries, Loramendi's exhibit featured its new LAV 3-D artificial vision system.