Definitions for "Spot Welding"
creating an overlapping joint by welding at small points
Assembling thermoplastics without preformed holes or energy directors. This method is useful for large parts and sheets of extruded or cast thermoplastics.
spot welds may be circular, elliptical, rectangular, annular, etc. in geometry. They are formed when the material is clamped between the shaped tip and anvil and ultrasonic energy is applied.