Heat Treatment Furnace

Knackwell manufactures Heat Treatment Furnaces in either electric or gas or Oil fired heating systems. The design of the heating systems provide for shielding of the loads from the detrimental effects of direct radiant heat or flame impingement while promoting efficient uniform heating of the loads.

Electric Heating Systems : Electric Heat Treatment Furnaces employ various styles of resistance type electric heaters to maintain the integrity of the furnace atmosphere and thermal efficiencies. Heaters can be supplied as either standard open resistance wire/strip type. Thyristor power controllers with control panel door mounted diagnostics displays are standard for Knackwell Heat Treatment Furnaces, with optional PLC and PC systems integration available. Heating systems are factory pre wiredto meet NFPA standards where applicable, and all equipment is factory tested prior to shipment.

Gas Firing Systems : Gas fired furnaces employ either direct gas firing or indirect style gas firing burners to maintain the integrity of the furnace atmosphere. Following burner types can be supplied by Knackwell

Details :

• Fuel - LPG or Natural Gas

• Modulating

• Two Stage

• ON/OFF

• Capacity Range from 55,000 Kcal to 33,00,000 Kcal

Solid state flame supervision systems with panel door mounted diagnostics displays are standard for Knackwell Heat Treatment Furnaces, with optional PLC and PC systems integration available. Combustions systems are factory prepiped to meet NFPA standards where applicable, and all equipment is factory tested prior to shipment.

Thermal Recirculation Systems : Knackwell Heat Treatment Furnaces utilize Stainless steel construction fans for recirculation of the furnace atmospheres, promoting close tolerance temperature uniformities. Recirculation fans are located within a stainless steel plenum positioned in the top of the furnace heating chamber, integrated with the gas firing or electric heating system, to eliminate potential of direct heating of the workloads. Lateral sidewall ductwork is employed for introduction of the furnace atmosphere into the workzone beneath the workload, with recirculation and redistribution through the fan plenum inlet. Water jacketed

Coldcar Type Furnace Design : Knackwell Heat Treatment furnaces employ our "Cold Car" loading hearth design which only requires heating of the work load and loading hearth, rather than the entire structural car. The "Cold Car" is designed with sand seals positively locating the car to the furnace structure minimizing heat loss while maintaining atmosphere integrity.

Custom Designed and Engineered : Our in-house engineering and manufacturing allows Knackwell to custom design furnaces and systems to a customer’s process and specification requirements, rather than attempting to provide to you standard pre-design equipment, as some of our competitors would attempt to do. Follow-up technical services are available for all Knackwell thermal process systems.

Our Engineered Thermal Solutions will allow for flexibility in your manufacturing productivity with following advantages :

• Total system packaged in common frame including power and control components

• Heavy Gauge Welded and Reinforced Steel Frame

• Designed insulation selection based on the design and process of the furnace.

• Water-Jacketed Cooling Section

• Master – Slave control system to temperature uniformity within the furnace.

• Minimum Power/Fuel Consumption for the operation of the Furnace.

• Programmable Set Point Temperature Controller

• Phase Angle-Fire Thyristor Power Controller

• Independent Over-temperature Instrumentation

• Type “K” Thermocouples