Wisconsin Oven Corporation shipped a two-zone belt conveyor oven for tempering various steel parts after induction hardening. The oven is designed for precise temperature control and energy efficiency.
The conveyor oven is capable of heating 2,400 pounds of steel per hour from 70°F to 350°F, with a maximum temperature rating of 500°F. The recirculation system features a top-down airflow design with a 32,000 CFM blower, with each of the two zones utilizing 16,000 CFM. The temperature for both zones is controlled by a Watlow F4T digital recorder/controller, which provides Ethernet communication capabilities and PID temperature control with adaptive tuning. To ensure compliance with AIAG specification CQI-9, a temperature uniformity survey was conducted, documenting uniformity of ±10°F at 350°F with verified part soak.
The oven is equipped with a continuous-belt-style conveyor that uses a variable frequency drive for speed adjustments. The work zone dimensions are 4’0” W x 21’0” L x 14” H. To maximize energy efficiency, the oven is designed with an E-Pack™ energy efficiency package. This upgrade includes 2-inch thicker insulation in the walls, floor, and roof, as well as variable frequency drives on the recirculation blowers. These design features reduce energy consumption and operating costs. Depending on utility rates, operating temperature, and weekly usage, customers may achieve significant annual energy savings with an E-Pack™ energy efficiency package.
“The customer chose to enhance the operating efficiency of the oven with the E-Pack™ energy efficiency package,” said Tom Trueman, senior application engineer. “Depending on utility rates, operating temperature, and weekly usage, customers may achieve significant annual energy savings with this upgrade.”
Unique features of this belt conveyor oven include:
- Watlow F4T temperature controller with PID temperature control with adaptive tuning temperature uniformity with guaranteed part soak.
- Top-down airflow to optimize the heat-up and uniformity of the product load.
- E-Pack™ energy efficient package.
- Continuous-belt-style conveyor.
- Variable frequency drive for conveyor speed adjustments.
- Programmable temperature controller with auto-tune functionality.
This tempering oven was fully factory tested and adjusted prior to shipment. All safety interlocks were checked for proper operation and the equipment was operated at the normal and maximum operating temperatures. An extensive quality assurance check list was completed to ensure the equipment met all Wisconsin Oven quality standards. This equipment is backed by Wisconsin Oven’s Exclusive and Unprecedented 3-Year WOW™ warranty (parts only).
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