TPT September 2014

Furnaces & heat treatment

Inert electrically heated oven NO 964 is an electrically heated, 1,000°F (~538°C) inert atmosphere oven from Grieve, currently used for bluing steel at the customer’s facility. Workspace dimensions measure 24"W x 24"D x 36"H.

doorway throat, air jacket on the inner oven for cooling, ½"-thick cellular silicone rubber atmosphere door seal, blower shaft seal, positive door latching hardware, adjustable offset door hinges, outlet with pressure relief, all interior seams welded gas-tight and all wall penetrations fitted with compression fittings. An integral oven leg stand is also provided. Controls on No 964 include a digital

18KWare installed in Incoloy sheathed tubular elements to heat the unit, while a 750 CFM, ¾-HP recirculating blower motor provides horizontal front-to-rear airflow to the workload. The Grieve inert atmosphere oven features 8"-thick insulated walls comprising 2" of 1,900°F block and 6" of 10lb/cf density rockwool, aluminised steel exterior and Type 304, 2B stainless steel interior with continuously backwelded seams. Special construction features for inert atmosphere use with the customer’s steam boiler include a pressure gauge, internal high-temperature gasket, all-welded expansion connection in

No 964 from The Grieve Corporation

power controller and fused disconnect switch.

programming temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, 10" diameter, 2-pen circular chart temperature recorder, SCR

The Grieve Corporation – USA Email: sales@grievecorp.com Website: www.grievecorp.com

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S eptember 2014