February, 2016
www.us-tech.com
Page 71 Telsonic Develops Torsional Welding Procedure
Erlangen, Germany — Telsonic Ultrasonics GmbH has continued to develop its system of torsional ultrasonic welding —a method of combining a vari- ety of plastics and metals. The procedure, named Soniqtwist® was first introduced in 2006 and was established as a premier joining method. Torsional energy is gently exerted to the area of the joint, and is suitable for highly sensitive parts. Strong forces may also be applied for a short time, which is suitable for aluminum or copper. Even painted plastic parts can be joined firmly without leaving visible indentations. Soniqtwist is a high frequency friction weld-
ing procedure categorized somewhere in between vibration and ultrasonic welding. The sonotrode oscillates torsionally around its longitudinal axis in both directions. Much energy is applied to the boundary sur-
face of both parts, with a frequency of 20kHz and an amplitude of up to 80µm. This boundary friction enables both parts to be joined safely. The design of the torsional
devices is similar to conventional ultrasonic welding equipment, with a generator, converter and sonotrode. However, in contrast, the sonotrode
Fisnar Intros Line of Soldering Robots
Pine Brook, NJ — Fisnar, a manufac- turer of soldering robots and fluid dispensing systems, has introduced its F7000SR series of soldering robots. The series brings together the company’s specialties in automa- tion and soldering equipment. The robot is well-suited to replace hand
does not oscillate longitudinally, but torsionally, which contributes to the reduced load on the com- ponents. Ultrasound can be transmitted by the sonotrode with a power of up to 10kW. Even with difficult materials, this allows for strengths which could hardly be attained in the past. Pull-off strengths of 500N or more can be achieved, depending on the material and its requirements. A generator operates at a frequency of 20kHz
and up to four converters can be applied with one sonotrode. Thus, a maximum capacity of 10kW is available, which is often required for welding metal joints. The high frequency enables a very high ener- gy input in a short time, usually within 0.3 to 0.4 seconds. When the ultrasonic power switched off, the sonotrode is returned to its initial position. The procedure requires no external supply of heat. The sonotrode contacts the upper of the two
parts to be welded. This movement and the weld- ing pressure produce friction between the partner joints and creates a molecular joint at the correct melting temperature. The process can be reliably controlled, monitored and can be accurately per- formed repeatedly. All parameters, such as fre- quency, duration of welding, or energy applied, can be adjusted at any time. In addition, the process includes software which can control a variety of parameters, including energy input, welding depth
and process time. Contact: Telsonic Ultrasonics, Inc., 50350
Rizzo Drive, Shelby Township, MI 48315 % 586-802-0033 fax: 586-802-0034
E-mail:
info.us@
telsonic.com Web:
www.telsonic.com
See at ATX/MD&M West, Booth 4611
Fisnar robotic soldering system.
soldering methods, or to bring out- sourced applications in-house. The soldering system includes a
built-in solder tip cleaning station to prolong the life of the soldering head, and reduce downtime for cleaning. It has been designed to handle solder diameters from 0.6 to 1.2mm (0.024 to 0.047in). It also contains a fully adjustable temperature control, which allows the system to be flexi- ble enough for a variety of solder
applications. Contact: Fisnar, Inc., 19C
Chapin Road, Suite 307, Pine Brook, NJ 07058 % 973-646-5044 E-mail:
info@fisnar.com Web:
www.fisnar.com
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