Cold Press Needle Crimping Die Cavity: Why Is Oil Not Applied In Principle During The Processing?

In professional connector manufacturing environments, the crimping cavity treatment of the contact crimper equipment is a core component of process stability and assembly consistency. Unlike the lubrication points commonly found in automated crimping equipment, applying grease or other lubricating media to the surface of the crimping cavity of the d sub contact crimper equipment alters the friction conditions of the metal-to-metal contact surface, thus unpredictably affecting the crimping results. contact crimping Not applying oil to the crimping cavity is considered a process principle because an oil film under high pressure may cause the metal-to-metal contact characteristics between the terminal and conductor to deviate from expectations, thereby affecting molding consistency.

The Influence of Cavity Surface Condition on Cold-Pressed Pin Crimpers

The fine machining and surface condition control of the crimping cavity directly affect the repeatability of the crimping cycle. The metal-to-metal contact surfaces of the cavity inner wall are typically kept in their original, machined state or have undergone specialized surface treatment to control the local metal flow direction during crimping. The presence of lubricant in this area alters the coefficient of friction between metals and causes inconsistent material flow patterns with each closure of the cold-pressed pin crimper.

Crimping Cavity Design and Material Contact

• Carbide or High-Speed ​​Steel Dies: Crimping cavities are typically made of highly wear-resistant materials, with finely polished or specially treated surfaces to maintain stable forming mechanical response.

• Metal Flow Path Control: Cold-pressed pin crimpers require precise control of the shape deformation trajectory of the pin and terminal materials during crimping. Any external medium can cause uneven deformation.

On-Site Operation and Equipment Maintenance Requirements

The factory has strict regulations regarding the handling of the cavity interior during the production of cold-pressed pin crimpers. Cleaning of the cavity area typically involves air blowing or a standardized wiping procedure to remove debris or particles, without the use of oil-based lubricants. During maintenance, lubrication of moving parts is necessary, but this lubrication should be limited to the designed sliding contact points and should not migrate to the crimping cavity area.