The Only Spin Welding Webinar You'll Ever Need

This webinar provides key information on spin welding, covering the following aspects:

Spin Welding Process

Spin welding is a quick and simple process in which a stationary part is joined to a rotating component under pressure. The friction generates heat, melting the material, and a strong bond is formed as the material cools after the spindle head stops. It's one of the fastest welding technologies [02:57].

Equipment Configurations

Equipment can be configured as:

• Standalone: A complete machine with guarding and additional features like task lights, fans, and barcode scanners [07:42].
• Integration Style Package: A stripped-down version for integration into larger automated lines. Multiple spin weld heads can operate simultaneously for efficiency [08:26].

Home Screen Process Monitoring (Vortex Eminence Spin Welder)

The Vortex Eminence Spin Welder monitors several critical parameters to ensure quality:

• Z-position: Ensures correct collapse for a strong joint [09:24].
• Spin Velocity: Displays rapid acceleration and crucial rapid stopping to prevent weak bonds [09:42].
• Force in Z-direction: Important for setting pass/fail criteria and ensuring good part quality [10:14].
• Spin Torque: Helps detect issues like broken parts during loading [10:31].
• Angle Position: Programmable for directional alignment of parts, especially for components like 90-degree elbows [10:42]. All parameters can have high and low limits to trigger alarms for faulty parts [13:49].

Z-Control: Pneumatic vs. Servo

• Position Tolerance: Servo offers tighter control (±0.02 mm) compared to pneumatic (±0.2 mm) [15:45].
• Force Control: Servo provides precise control, while pneumatic is moderate [16:00].
• Force Capacity: Servo can achieve very high force (550 lbf) [16:21].
• Feed Rate Control: Servo offers precise control over vertical movement speed (400 mm/s), preventing issues like blowing past the weld joint, unlike uncontrolled pneumatic systems [17:28].

Materials Compatibility

Many thermoplastic materials are compatible, especially:

• Amorphous resins: Such as PC, PC/ABS, and PMMA [23:25].
• Semi-crystalline resins: Including Polypropylene (PP), ABS, PET, PBT, and Nylon [24:22].
• Fillers: Glass or talc can improve kinetic friction, which is beneficial [26:15].
• Challenging materials: Those with low kinetic friction, like Polyethylene (HDPE, LDPE) and Teflon (PTFE), are too slippery [26:33].
• Mixing material types is possible if they are chemically compatible [27:29]. Spin welding always produces particulate flash, and joint design is crucial for managing it [20:23].

Joint Design

• Butt Joint: Simple but has a small process window, leading to leaks and lower strength [29:53].
• Flanged Shear: Hides flash within a pocket and offers good strength based on weld depth [30:00].
• Tongue and Groove Joint: Considered the best due to a large adhesion surface area, self-locating/self-centering properties, and flash containment. It also accommodates part warping [30:44].
• Hard stops (cold material touching cold material) should be avoided as they can reduce effective welding force and create more flash [34:12].