Induction De-bonding of Rubber Coating from Steel Plates

Objective: One of the leading manufacturers of specialized consumable products for mining industries is interested in the advantages of induction heating technology and wants to implement it in their manufacturing.

The customer needs to heat steel plates with a rubber coating used as parts for sand mills so they will be able to remove the rubber coating from the metal part.

The primary purpose of this application is to demonstrate the efficiency of induction heating. The company wants to change the current method because it takes a long time and generates hazardous fumes (burning out the rubber coat).

The rubber can be mechanically removed from the metal surface. The critical process requirement is to heat the parts at a temperature under 300°C, so the adhesive used for the rubber coating loses properties. Max heat cycle must be 1 hour and the productivity rate – one part for an hour.

Industry: Manufacturing & Automation

Equipment: Our recommendation is to utilize an UltraHeat M/AIR unit for the induction de-bonding process of the parts. During this application test, we used K type thermocouple to confirm the heated temperature.

Process: For the current induction de-bonding application, we used a pancake induction coil. It was wound with a dry-lit cable and laid on the insulation to keep the coil off the hot part.

The power was set up at 7 kW, and the temperature was recorded using a k-type thermocouple. The thermocouple was placed on the top of the part, under the insulation. The measured temperature was around 350 F (~177 C), and the heat cycle time was 15 minutes.

Benefits: Most of the parts were successfully de-boned. With proper tooling and a processing time, the cycle could be optimized.

With induction de-bonding heating, the production process is more manageable, energy-efficient, and safer for the operators and environment.

Reference Info: Application Note 3463-7084

Read more about other induction bonding and sealing applications.

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