Barrel Heaters - Hasmak.com.tr

W A T L O W<strong>Barrel</strong> <strong>Heaters</strong>Cast-In Heat/CoolFast production cycles andconsistent operating temperaturesare essential for plastics processing.Extruding specially engineeredresins requires not only efficientthermal heating of the barrel uponstartup, but also cooling to removeshear heat generated from screwrotation - all without degrading thematerial being processed.Heat/cool band heaters from Watloware made of cast aluminum,providing high thermal conductivityand extremely uniform surfacetemperatures for extrusion barrels.For high-volume quantities, Watlowutilizes permanent molds to ensureexacting precision batch-to-batch.These molds are constructed ofsteel or cast iron and provide asuperior exterior finish. Pressureformed sand molds are used forsmall quantity runs and utilize woodpatterns. This process provides amore economical approach due tolower mold costs as well asproviding shorter initial lead times.The heat/cool band heater consistsof tubular heaters cast in withcooling tubes. These tubes areplaced in proximity to the heatingelements to produce an efficientheat/cool design.Heat/cool bands from Watlow arecontamination and corrosionresistant and can withstand hightemperature and pressures in harshenvironments with years of troublefreeservice.Incoloy ® is a registered trademark of theSpecial Metals Corporation.UL ® is a registered trademark of theUnderwriter’s Laboratories, Inc.Features and Benefits• Optimized cooling tubes allowinstant cooling, which improvesefficiency of extruder barrelplastics processing.• Delivery is available on manyreplacement OEM designs in fourweeks and non-standard designsare available in five weeks.• Watlow’s <strong>com</strong>plete foundrycapabilities assure precise anduniform placement of the elementin the casting.• UL ® <strong>com</strong>ponent recognition oncast-in heaters is availableexclusively from Watlow.Application• Extruder barrels for plasticsprocessingOther Options• Holes, cutouts, slots• Thermowells• Thermocouple fittings• Cooling tube fittings• Three-phase heater configuration• Incoloy ® cooling tube• Self-draining cooling tubeconstructionPerformance Capabilities• Operating temperatures up to370°C (700°F) with 319 or 356aluminum• Maximum watt densities to9 W/cm 2 (60 W/in 2 ) on the tubularsheathExtrusion<strong>Barrel</strong> <strong>Heaters</strong>203