Ultrasonic horns for plastic welders nevik ultrasonics is perhaps the first in the country to focus only on design and manufacture of ultrasonic horns for ultrasonic plastic and metal welders. This focus helps them deliver excellent solutions for your ultrasonic welding applications, be it plastics or nonferrous metals. Solutions based on a wide range of standard tools to customengineered, high wear resistant, long life tools. Each one designed and manufactured using finite element modeling for engineering analysis. Ultrasonic horns in aluminium, steel or titanium alloy &ndash optimized for your application.