ROLLER HEARTH FURNACES

They can also be set up in an oscillating configuration for long heating cycles on very long stock such as pipe, tubing, strip, and slabs. The roller hearth can also handle heavy loads in high volumes because the rolls enable smooth movement of individual carriers, unlike pusher furnaces which rely on forcing a long line of base trays against each other to achieve movement of the product.

This style of furnace can be continuous or indexing on a fixed interval or can operated via forward/reverse oscillation-in-place to accomplish a particular time-temperature cycle.

If sufficient floor space is available, a roller hearth furnace can accomplish a multi-step process such as stress relief including heat, soak and cool steps, moving the product in a continuous manner.

By using an indexing system the footprint can be much smaller because the hearth advances one basket at a time through the steps.

In the oscillate-in-place type, a long load is moved into the furnace chamber, its doors closed, then the system oscillates to keep the rollers from sagging and when the time-temperature cycle has been completed, the load is quickly powered out of the furnace chamber.

Roller hearth furnaces can accomplish a multi-step process such as stress relief including heat, soak and cool steps, moving the product in a continuous manner.

ROLLER HEARTH OVENS

Nutec Bickley provides roller hearth ovens in custom designs to match customer production and process requirements.

• High convection design to improve the fast heat up of the load or direct fire system

• Customized air distribution designs in order to match the air flow pattern requirements according with product /load arrangement