Coldwater Machine Company is demonstrating its SpotMeldTM system capabilities at FABTECH 2015 in booth #S2158. SpotMeld is a Refill Friction Stir Spot Weld (RFSSW) solution that enables spot welding of aluminum (1000 – 7000 series), magnesium, non-ferrous and dissimilar sheet materials, offering an alternative to single-point joining processes like resistance spot welding, laser welding and riveting.
The SpotMeld system uses rotational friction to heat the materials along with pressure to forge together the parts using wear-resistant tooling to join two or more surfaces. Heat is generated between the tool and material, creating a soft region. Pressure is then applied, resulting in a solid state joint. Benefits of include the ability to join flexible sheet thickness combinations in one operation with a high quality joint that is near original material strength, a small heat affected zone, consistency in weld duplication and faster weld times, as well as being environmentally cleaner and safer with no filler material, spatter, smoke, radiation or shield gasses.
Coldwater Machine’s SpotMeld friction stir spot welders can be configured to application specifics and mounted on any industrial robot. A variety of weld recipes can be used on demand by the robot controller, which results in a very flexible production system.
SpotMeld Process Summary
Our core business over the years has evolved from precision machining to providing dies, fixtures, and gages, and to providing turnkey automated systems for the Aerospace, Appliance and Automotive industries that include a wide range of flexible and agile metal forming and fabricating solutions.