How Does Low-volatility Lubricating Oil Affect The Crimping Accuracy Of Cold-pressed Needle Crimpers?

In the production of electronic wire harnesses, the maintenance of contact crimper often focuses on mold wear or crimping height adjustment. Lubrication, however, also significantly impacts yield. Crimping involves intense friction between metal parts, making lubricant indispensable. Ordinary lubricants contain volatile components; after these components dissipate, the viscosity of the residue increases, causing fluctuations in the friction coefficient of the crimping needle's sliding surface. This change directly affects the stability of the crimping curve.

The Necessity of Low-Volatile Formulations

Electronic wire harness applications are extremely sensitive to grease volatility. Volatile substances condense and adhere to the contact surfaces, potentially forming an insulating film that interferes with signal transmission. Low-volatile lubricants significantly reduce the production of condensable volatiles by altering the base oil composition. This ensures a continuous oil film between the crimper slide and guide rail, resulting in crisp component movements. Lubrication intervals are extended, eliminating the need for frequent production line shutdowns for re-lubrication.

Indirect Protection of Contact Interfaces

Crimping quality is directly affected by tool condition. d sub contact crimper If a highly volatile oil is used, lubrication failure will occur after long-term operation, which will lead to microscopic scratches on the outer wall of the pressure needle. When a damaged crimping pin is used to crimp a wire, a regular compression zone cannot be formed, resulting in decreased airtightness. Low-volatility lubricating oil adheres persistently, ensuring precise force transmission with each closure of the crimping jaws. This keeps the metal interface between the terminal and the wire clean, improving corrosion resistance.

Maintenance Guidelines and Oil Selection

Solvent selection during cleaning requires caution. Industry standards clearly state that acetone and other chemical solvents that may damage plastic insulation are prohibited when cleaning connectors. Anhydrous ethanol is preferred for wiping residual grease. When lubricating contact crimping, choose lubricant products labeled with "low volatility". These oils are generally safe for plastics and form a thin film, preventing penetration into the insulation and causing a decrease in resistance. Lubrication procedures should be included in the inspection checklist, and operators should follow the guidelines to avoid arbitrary lubrication.