WCA January 2019

Technology news

Two-zone, dual belt conveyor oven ❍ The No 1022 conveyor oven from Grieve

belts with 1-HP motor drive, variable from 0.5 to 9 ipm. The conveyor belt drive is used in either index or continuous mode. Removable drip pans are provided below the conveyor assembly. Controls on the oven include separate power and control panels, plus photo eyes at the unload station to signal an alarm, if the workpiece unloading is not cleared before conveyor indexing, SCR power controller for each zone and a tower light to indicate oven status. All control functions are accessed through a touchscreen HMI connected to the onboard PLC. Grieve Corporation – USA Website : www.grievecorp.com

zones with independent recirculated airflow and temperature control, 3ft-long insulated unheated exit vestibule and finally a 2ft-long open unloading zone for the workpieces. No 1022 has 6" insulated walls throughout, aluminised steel interior/ exterior and is split into two sections for shipping. Side doors along the length of the oven permit access to the workload and heating chambers. This Grieve conveyor oven is built with all safety equipment required for handling flammable solvents and is constructed to NFPA 79/NEMA 12 electrical standards. The oven further features two 3ft-wide, 1-3/16" diameter cross bar conveyor

No 1022 is a 550ºF, electrically heated, two-zone, dual belt conveyor oven from Grieve, currently used for encapsulation curing of large electrical coils in fixtures at the customer’s facility. Workspace dimensions of this oven measure 8ft W x 40ft D x 18" H. 480 kW (240 kW per zone) are installed in Incoloy-sheathed tubular elements to heat the oven chambers, while two 20-HP recirculating blowers provide a 49,000 CFM vertical downward airflow to the workload. This Grieve conveyor oven comprises a 2ft-long open belt loading zone and 3ft-long insulated, unheated entrance vestibule, two 20ft-long insulated heat

Graphics bigstockphoto.com Artist Olechowski

25

www.read-wca.com

Wire & Cable ASIA – January/February 2019