Induction Furnace Lining Tools

The FOUNDRY INDUSTRY'S answer to fast, uniform compaction of dry castable refractory linings in coreless induction furnaces.

• Homogeneous compaction of refractory is completed in minutes.
• Simple two-step procedure saves time.
• Removable Vibrator serves both Bottom Plate and Expanding Cross unit.
• Hydraulically operated Expanding Cross is available in 5 sizes.

OPERATION

The WORKMASTER Vibratory‑Expanding Cross (WEC) system uses an interchangeable Vibrator to compact both bottom and side refractory linings in coreless induction furnaces.  Illustration A shows the WEC-800, in the fully contracted position, with both the Vibrator, and Shoes with wood Battens in place; illustration B shows the WEC-800 fully expanded; C shows the smallest unit, model the WEC-300, fully contracted, without Shoes and Battens.  Two HDE Shoes, shown at D, are used, when necessary, to increase the fully-expanded size of WEC units.

The Bottom Plate with the Vibrator bolted at its center, as shown above, is lowered and placed on the dry refractory material previously poured into the bottom of the furnace.  This bottom lining is compacted first, then, when complete, the Bottom Plate assembly is removed.

The Vibrator is then removed from the quick-change bracket on the Bottom Plate and installed in the bracket on the WEC unit.  A closed-end, cylindrical Lining-Former (the Former) is centered in the furnace, and lowered and fixed in place on the already-compacted bottom lining.  Dry refractory material is poured into the space between the Former and furnace wall.  The WEC unit, with Shoes and cut-to-size oak Battens attached, is lowered by hoist to the location where the initial compacting of the wall lining refractory is to take place.

The WEC unit is then expanded hydraulically until the Battens firmly contact the inside of the Former, and then the hoist is slacked off.  When the Vibrator is activated, a strong and effective vibrating force (10,400 Force lbs.; 11,000 VPM @ 80 PSI), is transferred through the Former, uniformly compacting the refractory.  Depending on furnace height, the WEC unit is contracted, raised, re-expanded and vibrated again as required.  The easy to control vibrator frequency achieves a homogenous refractory compaction throughout the lining.

Accessories required include a VIBRATEK CR-6500 Vibrator, Part No 16-17320 and a hand-operated hydraulic pump, Part No 54-10305 (both stock items), plus a Lining-Former, a Bottom Plate and four cut-to-size wood Battens.  Existing Formers may be used.  They should be fabricated of steel not less than 5/16" in thickness.  If desired, WORKMASTER can provide the Former, Bottom Plate, and Battens to fit individual applications, at nominal cost.

TO ORDER, determine the inside diameter of the Former you intend to use.  With this data in hand, simply call or fax WORKMASTER.  We will be glad to determine the exact WEC Vibratory‑Expanding Cross System model you should have – and we will provide full information on price and delivery.

Performance Data