How To Thoroughly Remove Oil Stains From The Inside And Outside Of The Terminal Before Cold Pressing Pins?

Thoroughly removing oil from terminals requires a specialized degreasing solvent like 99% isopropyl alcohol. Submerge the parts in an ultrasonic bath for 5 minutes, or use lint-free swabs to wipe internal surfaces. Ensure complete evaporation before using a cold-pressed needle crimping device to guarantee a secure, low-resistance electrical connection.

The Importance of Degreasing in Contact Crimping

Residual oils from manufacturing or storage degrade electrical conductivity and weaken mechanical pull-out strength. During contact crimping, trapped oil prevents proper metal-to-metal bonding, leading to high resistance and potential joint failure under thermal stress. Eliminating contaminants ensures the crimped joint meets rigorous industrial conductivity standards and prevents field failures.

Step-by-Step Terminal Cleaning Guide

Achieving a pristine surface involves a systematic approach to eliminate external grime and deep internal oil pockets. Specialized cleaning tools ensure that no oil film remains inside the connection barrel. This critical preparation prevents unexpected wire slippage when executing heavy-duty wire termination applications across various production lines.

1. Solvent Immersion Process

Operators must follow specific sequence steps to ensure uniformity:

1. Fill an ultrasonic tank with 99% isopropyl alcohol.

2. Submerge components fully for 5 to 10 minutes.

This method removes stubborn manufacturing oils within the wire barrel, ensuring no film remains before utilizing a contact crimper to process the batch.

2. Internal Micro-Wiping Process

For complex geometries, manual intervention ensures deep cleanliness:

1. Saturate a micro-tipped, lint-free foam swab with solvent.

2. Rotate the swab 360 degrees inside the barrel.

This precise mechanical action lifts trapped grease before utilizing a specialized tool like a d sub contact crimper for high-density configurations.

Cleaning Methods and Evaporation Times

Verification and Assembly

Always verify dryness with a visual inspection under 10x magnification. Any remaining solvent or wetness can trap moisture, causing localized corrosion after the mechanical compression is finished. Clean storage protocols must be maintained in sealed, anti-static bags until the final assembly stage is complete to prevent re-contamination before the cold-pressed needle crimping device seals the connection.