Process Standards And Practical Specifications For Cold-pressing Copper Wires Without Breakage
To crimp a copper wire with a cold pressing needle without breakage, operators must maintain a compaction ratio between 75% and 85% and use a calibrated ratchet tool that prevents over-compression. Ensuring the wire gauge matches the terminal barrel exactly eliminates stress concentration, which is the primary cause of fractured copper strands during industrial wire termination.
Secure Connection Parameters
Achieving mechanical stability requires adherence to strict geometric tolerances. Proper calibration prevents the crimp contact female component from loosening under thermal cycling. Managing the mechanical deformation ensures the wire retains its full current-carrying capacity without experiencing micro-fractures.
Crimp Validation Specifications
| Wire Gauge (AWG) | Tensile Strength Minimum (N) | Optimal Compression Ratio |
|---|---|---|
| 16 | 135 | 80% |
| 18 | 90 | 80% |
| 20 | 60 | 80% |
Execution Steps
-
Insulation Stripping: Remove the outer jacket cleanly using a calibrated blade to ensure zero contact with the inner conductor strands.
-
Component Alignment: Insert the conductor fully into the crimp contact male barrel, ensuring all copper strands are contained inside.
-
Cycle Completion: Engage the crimping tool fully until the internal ratchet mechanism releases naturally, ensuring uniform pressure distribution.
Quality Verification Methods
Defect prevention relies heavily on post-termination evaluation. A correctly configured crimp socket contact must exhibit a visible rear bellmouth and a slight conductor protrusion at the front flush point, confirming complete insertion.
