Heat Treatment
Industries - Heat Treatment
EASTERN designs and manufactures custom recuperators and heat exchangers built for heat treatment furnace applications. In annealing, hardening, tempering, and case-hardening furnaces, flue gases exit at temperatures between 600°C and 1,000°C and without waste heat recovery, that energy escapes entirely through the exhaust. Our recuperators capture this exhaust heat and return it as preheated combustion air at up to 700°C, cutting fuel consumption significantly while maintaining the precise temperature control that heat treatment processes demand. EASTERN serves leading industrial names including Andritz, Danieli Centro Combustion, and Bharat Forge supplying proven heat recovery systems to heat treatment plants across India and worldwide.
- Fine temp up to 1000°C
- Air Preheats up to 700°C
- Lower fuel consumption
- Factory insulated, ready to install
- Simple operations
- Simple controls
- Simple piping
How Recuperators Reduce Fuel Costs in Heat Treatment Furnaces
In heat treatment operations, furnaces must cycle through precise temperature profiles heating, soaking, and cooling to achieve the required metallurgical properties in the workpiece. However, a large share of the fuel energy burned during these cycles exits as hot exhaust gas. Without a recuperator, the flue stack wastes this heat on every single run.
EASTERN’s heat exchangers intercept the hot flue gas as it leaves the furnace. They use this captured energy to preheat incoming combustion air before it enters the burner. As a result, the furnace reaches target temperatures faster, using less fuel per cycle. Furthermore, consistent air preheat temperatures improve temperature uniformity inside the furnace leading to better process repeatability and fewer rejected parts.
Why Industrial Plants Choose EASTERN for Furnace Heat Recovery
EASTERN engineers each recuperator to match your specific furnace type, fuel, operating temperature, and production cycle. Because heat treatment furnaces including box furnaces, pit furnaces, belt conveyor types, and continuous lines operate under very different conditions, Eastern custom-builds every system rather than supplying off-the-shelf units. In addition, Eastern factory-insulates every unit and ships it ready to install, with simple piping and controls that minimise installation time and disruption.
Specifically, our furnace heat exchangers deliver:
- Fine temperature control up to 1,000°C for precise metallurgical results
- Air preheat up to 700°C for maximum thermal efficiency
- Lower fuel consumption across annealing, hardening, and tempering cycles
- Simple operations, controls, and piping for easy day-to-day use
- Factory insulated, ready to install — minimal site work required
EASTERN provides full installation support and after-sales service throughout the system’s operating life. Eastern manufactures every heat exchanger at our ISO 9001:2015-certified facility in Kolkata, meeting international quality standards. Eastern’s systems also support the energy efficiency benchmarks set by the Bureau of Energy Efficiency, Government of India. To find the right system for your furnace, calculate your recuperator using our free online tool.
