Bonding a Stainless Steel Sheet to a Soundproofing Mat

Objective

To rapidly bond a sound proofing mat to a stainless-steel sheet for use in dishwashers. The client was unhappy with the quality from oven heating and was instead looking to implement induction within a production line.

End Product

Soundproofing mat

Equipment

Ambrell EASYHEAT^TM 4.2 kW, 150-400 kHz solid state induction power supply with a workhead and coil specifically designed for this application.

Materials

• Stainless steel sheet (4” x 6” x 0.018” / 102 mm x 152 mm x 0.5 mm)

• Sound proofing mat with adhesive (4” x 6” x 0.18” / 102 mm x 152 mm x 4.5 mm)

Temperature

300 ºF (149 ºC)

Frequency

173 kHz

Testing

The part was assembled with the mat in contact with the stainless steel sheet. The part was set on non-conductive material and placed inside the coil. The EASYHEAT power supply was turned on, the part was heated, and the power supply was turned off – the process took three seconds. The part was then air cooled and the bonding application was completed.

Benefits

• Precision and efficiency: Induction heating only heats the part, which saves energy, while not melting the sound proofing mat since the mat is not conductive.

• Higher production rate: With bonding only taking three seconds and the mat applied during heating, it accelerates the production rate when compared to an oven heating process.

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