The three-quarter-inch steel liner panels, originally installed in the rotary sprue mill. General Kinematics’ DUCTA-SERIES™ rotary drum is fitted with sturdy, well-fitted liner components that provide the ruggedness needed to endure high-throughput shakeout activity.
The demands of the job
Loose sprue material, trapped in the space between the liner and the drum. Continuous use to break up sprue and separate sand from metal castings is punishing to the rotary drum liner.
One piece of the puzzle
One segment of the worn-out liner, showing the particular effects of wear. These panels had been in service for about eight years.
Fit for service
Liner panel sections, worn and loose from the wear of continuous rotary processing, separating sprue from finished castings. Keeping the panels fitting securely is an additional demand on the foundry’s maintenance team.
The General Kinematics DUCTA-SPRUE rotary mill installed in 2007 to replace an earlier machine.
The DUCTA-SPRUE rotary mill in place at the iron foundry. The shakeout system was installed together with a vibratory sand-return conveyor.
Designed for convenience
GK designs its rotary mills system with bolt-in liner panels that are easy to replace and allow easy access to the area between the liner and the body, for quick cleaning and repair. Also, DUCTA-SERIES SL bodies are available as a retrofit for existing rotary drum drive structures.
A General Kinematics LOCK-TITE™ liner kit ready for shipment and installation. “The life expectancy for a liner set should be three to five years,” according to GK’s Claude Hutchens, “depending upon usage and tonnage rates.”
After eight years of regular service, the panels that were replaced in 2015 still had one-third of their original, three-quarter-inch thickness.