The Cold-press Crimping Tool Must Never Damage The Copper Core During Wire Stripping
To prevent copper core damage when preparing wires for a cold-pressed needle crimping device, utilize precision-calibrated stripping blades matched exactly to the wire gauge. Stripping must only remove the outer insulation without scratching, nicking, or cutting the inner copper strands. Maintaining intact conductor strands ensures maximum electrical conductivity and mechanical strength during subsequent contact crimping processes.
Why Nicked Copper Strands Ruin Electrical Connections
Damaging the copper core during the insulation removal phase creates severe performance bottlenecks. When a contact crimper compresses a weakened wire, the nicked strands can fracture under vibration or thermal expansion. This reduction in the cross-sectional area increases electrical resistance, generates localized heat, and eventually causes total signal failure in critical electrical assemblies.
Step-by-Step Guide to Safe Wire Preparation
Achieving a flawless termination requires adherence to precise preparation standards. Following a structured method guarantees that the physical integrity of the copper conductor remains uncompromised before assembly:
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Match the blade profile to the specific wire gauge.
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Set the stripping length between 3 mm and 5 mm.
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Inspect the conductor for visible scores.
Tool Calibration Metrics
Proper tool calibration prevents harmful mechanical interference with the inner conductor. Equipment must be adjusted according to specific wire dimensions. The reference table below outlines the standard parameters for common wire sizes to ensure optimal stripping depth without causing structural degradation to the copper core.
| Wire Size (AWG) | Insulation Thickness (mm) | Stripping Length (mm) | Pull-off Force Minimum (N) |
|---|---|---|---|
| 22 | 0.40 | 4.0 | 36 |
| 24 | 0.38 | 3.5 | 22 |
| 26 | 0.35 | 3.5 | 15 |
Executing Flawless Terminations
Once the insulation is cleanly removed, insert the pristine copper core into the terminal barrel immediately. Utilizing a high-quality d sub contact crimper ensures an even, omnidirectional compression. This precise mechanical pressure deforms the metal barrel around the intact copper strands, creating a gas-tight joint with optimal tensile strength.
