Solution Story: Electrically Conductive Silicone Washer
This story describes how Marian ultimately designed an electrically conductive silicone washer for a customer.
THE CHALLENGE
The customer needed a precisely cut washer that would act as a gasket on the standoff where two metal cast halves of an engine controller (EC) are attached. The gasket would shield the EC from electromagnetic interference (EMI) with other “under-the-hood” electronics. Additionally, the customer desired an efficient and cost-effective solution since the washer was a high-volume, small part (4,000,000 annually). In sum, production would suffer if the part was not placed quickly and accurately.
THE SOLUTION
Marian supplies the customer with a part that is placed accurately and automatically using the AccuPlace system. Though the die-cut part is extremely small (.256″ x .157″), Marian cuts it precisely. In fact, Marian developed a specialized process to remove center slugs uniformly.
BENEFITS
- EMI control for a conductive silicone material
- Good height and width accuracy on the standoff surface
- New process development for center slug removal of the washer
- High volume of parts with high productivity rates
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