ROTARY HEARTH TYPE FURNACES FOR REHEATING AND HEAT TREATMENT
Wesman has a full range of Rotary Hearth type Heat Treatment and Reheating Furnaces up to a capacity of 150 MTPH to offer to the Seamless Steel Pipe, Rail Wheel and Axle manufacturing and Forgings Industries. Mostly billets/blooms are placed horizontally on the hearth. Rotary hearth furnaces for vertical loading of the material can also be offered.
Two independent hydraulically operated machines are used for charging and discharging of material one at a time on the rotating hearth. Charging machine will pick-up the material from the Charge Roller Table placed at a particular location and place the material through charge door on the hearth at a predetermined location. Simultaneously, the discharge door will also open-up and the discharging machine will pick-up the hot material from the hearth and deliver the material to a discharge roller table. Both charging and discharging doors shall be driven by dedicated electro-mechanical/hydraulic drive arrangement.
Rotating hearth is fitted with adequate number of supporting rollers in two rows and move over rails anchored to the ground. Centering rollers are placed on the inner side of rotating hearth to prevent lateral displacement. Hearth rotation is made through two numbers electro-mechanical or hydraulic drive units placed at 180° apart. Hearth indexing arrangement is provided to stop hearth at stations for charging & discharging simultaneously.
The furnaces are fired with Wesman’s high efficiency burners supported by a full complement of combustion system consisting of combustion fan, atomizing fan, oil heating and pumping systems and/or gas trains. In addition auto ignition, flame failure safety and complete control systems are offered. Practically any type of liquid or gaseous fuel can be used viz. Furnace Oil, Light Diesel Oil, LPG, Natural Gas singly or a combination of any oil or gas in case of dual fired furnaces.
To improve fuel efficiency, Recuperators for heating combustion air up to 500 deg C is provided. For customers requiring even more fuel efficiency, Wesman Regenerator burners can be offered that can give air preheat of 1000 deg C or more.