L Shaped Square Cast In Barrel Heaters For Plastics Processing 

Description

The “L” shape cast-in heater design is typically used on square and rectangular extruder barrels,
Which utilize a twin screw design. In most cases,the high operating temperatures in these applications require these cast-in heaters to be constructed of a bronze alloy, however aluminum alloys are used for applications which do not require the higher watt densities. While the most common design for “L” shaped cast-in heaters consists of heat only, they can be manufactured with cast-in cooling tubes.  Typical mounting options include manufacturing the cast with 45°mounting flange which allows the cast-in heaters to be bolted and drawn together on the barrel or the cast-in heater can be supplied with mounting holes machined into the casting to mount directly to the barrel. The most common electrical termination for the “L” shape designs is a junction box mounted on to a vented tower that extends from the body of the casting . The box has a gasket for moisture resistance and can also be supplied with explosion proof specifications. The junction box can also be cast directly onto the heater. High temperature leadwire with a heavy-duty bronze braid is also available upon request.

Specifications

1. 120V 240V 480V or other voltage
2. Maximum watt density on the element 20W/cm2
3. Maximum weight: 400kg aluminum/ brass 300kg
4. Aluminum 700 degree F ; Bronze 1400 degrees F
5. Protective enclosure: sealed or ATEX
6. Electrical connection by terminals block or soldered cable heater output
7. Machining: On request
8. Tightening: Screw

Feature

1. Flange ear or drilled holes for mounting to the barrel
2. Durable cast-in vented towers for terminal box mounting
3. Manufactured in aluminum alloy for lower temperature applications
4. Cooling tubes can be cast-in for liquid cooling capacity
5. Machined holes for transducers and thermocouple locations.

Application

1. Heated Tables
2. Heating plated for resin curing
3. Guards or hot tubs
4. Heated rollers
5. Pockets and channels extruders of plastic, while metal
6. Stove, space heaters or gas
7. Spray Equipment
8. Furnaces or reactors for petrochemical industry