Based on our previous discussion of rapid emergency repair of PTFE wires in hot runner scenarios using cold crimping and double-layer fluoroplastic heat shrink tubing, the required tools and materials are listed below:
I. Essential Tools
Crimping Pliers: Special crimping pliers adapted for cold-pressing terminals, ensuring a tight, secure crimp of the wire cores.
Diagonal Neck Pliers: Used to trim damaged insulation and excess wire burrs at the break point.
Hot Air Gun: Provides precise temperature control; used to heat the fluoroplastic heat shrink tubing to ensure it shrinks tightly.
1000V Digital Megohmmeter: Used to test insulation resistance after repair to confirm performance meets standards. PTFE Wire Strippers: Prevents damage to intact wire cores and insulation layers during wire stripping.
II. Essential Materials
Cold-pressed Terminals: Copper cold-pressed terminals matching the wire core diameter to ensure connection strength.
Double-layer Fluoroplastic Heat Shrink Tubing: Temperature resistant ≥260℃, suitable for high-temperature conditions in hot runner systems.
High-Temperature Insulating Tape: Used to help secure the area around the connection point, providing additional insulation protection.
Anhydrous Ethanol: Used to wipe away oil and impurities at the break point, ensuring clean contact surfaces.
This set of tools and materials is fully adapted to the emergency repair needs in hot runner scenarios, enabling quick and compliant repairs and avoiding the risk of thermal damage to the insulation layer caused by direct welding.
