Heating coil

Core positioning:This product is an electric heating device specifically designed for the extruder barrel, die head, and other parts of plastic environmentally friendly granulators. It addresses the characteristics of recycled plastics, such as complex composition, significant differences in thermal stability, and the need to avoid localized overheating and degradation.Advanced materials and structural designEnsure heatingHigh efficiency, uniformity, rapid response, and long lifespanIt is a core temperature control component that ensures high-quality melting and plasticizing of recycled plastics.

I. Stringent Requirements for Heating Coils in Environmentally Friendly Granulation

The process characteristics of environmentally friendly granulation pose greater challenges to the heating system:

1. High temperature control requirements:Recycled materials contain many impurities and have complex thermal histories, requiring more precise temperature control to avoid thermal degradation (burning) or poor plasticization.

2. Frequent start-stop and load fluctuations:Uneven feeding, screen replacement, and machine shutdown for cleaning are common operating conditions, requiring the heater to have a rapid response and strong resistance to thermal shock.

3. Harsh working environment:The site may contain moisture, oil, and dust, requiring the heater to have good performance.Moisture-proof, explosion-proof, and corrosion-resistantperformance.

4. The need for energy conservation is urgent:As one of the main energy consumption points, high-efficiency heating coils with low heat loss can significantly reduce operating costs.

II. Core Technologies and Structural Advantages of the Product

Our heating coils use"High-efficiency heating + uniform heat transfer + robust protection"Integrated design concept.

1. Mainstream types and characteristics (selected according to customer needs):

• Cast aluminum heating coil (standard economy type):

  • structure:The resistance wire is embedded in a high-quality aluminum alloy casting.

  • advantage:It has a robust structure, a moderate price, and good heat transfer uniformity.

  • Applicable to:Medium and low temperature range (usually ≤350℃), ordinary PP/PE is recycled.

• Cast copper heating coil (high performance type):

  • structure:The resistance wire is embedded in a high-strength brass or copper casting.

  • advantage: Excellent thermal conductivityIt is 2-3 times that of cast aluminum, with more uniform temperature, faster response, and longer lifespan.

  • Applicable to:High-temperature ranges, areas requiring high temperature accuracy (such as PET and engineering plastics), or applications requiring rapid heating and cooling.

• Ceramic heating coil (high temperature resistant/special type):

  • structure:The resistance wire is threaded through a high-density microporous ceramic sheet and covered with stainless steel armor.

  • advantage: