Download PDF of this page Print this page

Shaker Hearth Furnace for Titanium Fasteners

  • Shaker Hearth Furnace for Titanium Fasteners
Click to enlarge
The Egloff and Graper Shaker Hearth Furnace model EG-100-E is an argon atmosphere shaker furnace system used extensively in the aerospace industry to provide continuous solution heat treatment processing of small titanium parts, most often fasteners.

Operating in automatic mode, the system moves precisely weighed batches of parts into an entrance air lock which is evacuated then backfilled with argon, prior to loading them onto the furnace shaker hearth. Parts are transported horizontally through the furnace muffle by calibrated and adjustable reciprocation cycles. Parts move through the 1700°-1750° F hot zone in a low dew-point argon atmosphere, before dropping directly into a refrigerated quench to be removed by a conveyor to your receptacle.

Shaker Hearth Furnaces function through the timed and repetitive acceleration and deceleration of the hearth along the axis of product travel causing parts to shift forward at each impulse cycle.  This style is commonly employed in the processing of small titanium parts such as screws and fasteners.

The furnace control system is fully automatic for controlling, monitoring, and recording all furnace functions including load sizes, cycle time, temperature, vacuum, and atmosphere flow rate. A variety of monitoring and control options are available to meet the most stringent process requirements. 

The furnace system meets AMS 2750E, MIL-H-81200, and various ISO certifications.

First developed in the 1970’s by Egloff and Graper, this system has been copied but never equaled, and is used by a majority of suppliers of aerospace fasteners in Asia, Europe, and the United States.