wiredinUSA September 2014

Ultrasonic welding for tin-coated wires

bending stress or stalling. The tin coating is dispersed, and the copper wire is welded without impairing the conductivity of the copper. Previous production methods for tin-coated assembly have included mechanical crimps and resistance welding, but Sonobond believes neither provides acceptable results. SonobondpresidentJanetDevineexplained: “Mechanical fastening is inconsistent, and resistance welding or soldering use more energy and often produce inadequate bonding. Our ultrasonic method is less expensive, uses a fraction of the energy needed for resistance welding, ensures RoHS compliance (which is problematical with soldering), and speeds up the production process.” Sonobond offers a range of ultrasonic welders to handle wire bundle sizes from 1mm 2 , including its SpliceRite TM units for one-pulse wire splicing of up to 100mm 2 in stranded bare copper wire and 60mm 2 in tinned wire. ALL the publicity you can get... Send us the details and a photograph for our new Products, Machines & Technology section in wiredInUSA. To make sure your editorial is published in the October edition, send us the details by 24 th September. All editorial should be sent to editor David Bell at david@wiredinusa.com

Sonobond’s ultrasonic system is capable of welding the tin-coated wires and terminals essential to electrical applications for high temperature, high humidity and other environmentally challenging conditions. Tin-coated copper wiring is preferred for marine motors and electronics, appliances, solar panel wiring, and some automotive applications. Sonobond’s ultrasonic units are said to achieve consistently reliable welds that remain highly conductive without compromising the protective properties of the tin coating.

Sonobond’s Wedge-Reed system uses a vertical, vibrating reed, driven by a wedge-shaped coupler and transducer assembly. With the line of static clamping force directly above the parts to be welded, high clamp force is achieved without

wiredInUSA - September 2014

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