The flexibility of mineral insulated cable allows the Mightyband® heater to be coiled, formed, wrapped around pipes or used straight. It can also be cast into metal or welded onto machine component parts.
Bulk Round Heater Cable can be formed into many configurations, making it suitable for many applications including its extensive use in heat tracing. The heat source is a resistance wire in straight or coiled form. A swaging and drawing process compacts the ceramic insulators that house the heating element into a solid mass, producing a rugged and durable heater cable with excellent thermal conductivity and dielectric strength.
Tempco’s cast bronze nozzle heater bushings eliminate uneven temperature profiles and short heater life; their precision machining also eliminates poor fit and the need for clamping bands, while providing maximum heat transfer. The built-in thermocouple in either Type J or K gives exceptional temperature control when connected to a Tempco TEC controller. The thermocouple has as standard an ungrounded junction located in the center of the width, which helps eliminate stray EMFs caused by the heater. A grounded junction at the end is optional.
Gamma Series mini-coil heaters for hot runner tooling are constructed with the heating element tightly sandwiched between a nickel plated copper inner sleeve and a stainless steel outer sleeve. The differences in heat transfer characteristics of the sleeves direct the heat generated by the coil inward, toward the nozzle, increasing overall efficiency. The inner diameter of the assembly is very tightly controlled, allowing for a slip fit with no clamping required.
Used in operations involving heating of cylindrical-shaped surfaces for temperatures up to 1800°F (982°C) where precise temperature control is essential.
The design incorporates a built-in thermocouple, with a grounded junction terminating at the end of the cable opposite to the lead end. The built-in thermocouple and the overall low mass construction provide quick response for positive temperature control.
Tempco's Mini-Coil Band Heaters are designed and manufactured under the tightest tolerances so that they may be used in hot runner/runnerless injection mold tooling with complete confidence on maintaining the manufacturer's original balanced heating when using a minimum of thermocouples and temperature control zones. Mini-Coil Band Heaters are available with screw operated clamping for the traditional style and cam operated axial clamping which allows tool room personnel to replace the heating element or the thermocouple of the gate bushing without having to remove the bushing from the mold.
The densely compacted MgO insulation used in Tempco-Pak heaters produces excellent thermal conductivity and dielectric strength.Tempco-Pak heaters are flexible and can be readily formed or bent by hand or production machinery, with the minimum bend radius equal to twice the sheath diameter. The heater sheath can be welded, brazed or soldered without changing its electrical characteristics.
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Wood Dale, IL 60191-1452 USA
Phone: 630.350.2252 Toll Free: 888.268.6396
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