Parallel Groove Clamp Molding Installation Improves Long-term Connection Stability

In overhead power distribution and transmission systems, strict requirements are placed on the long-term stability of connecting components. As a common non-load-bearing connecting component, the handling of the parallel groove clamp clamp during the field assembly phase significantly impacts its subsequent operational performance. When traditional metal connections are exposed to the environment, they undergo electrochemical reactions with oxygen in the air due to humidity, salt spray, and other conditions, forming an oxide layer. This surface change gradually alters the state and electrical properties of the metal contact surface, potentially leading to changes in contact impedance and poor contact.

Molding installation process for the protection of metal surfaces

By using molding materials to cover parallel groove connector, a continuous insulating protective layer can be formed after assembly. This coating layer, together with the metal contact surface, constitutes a dual protective interface. On the one hand, it covers the exposed area of ​​the clamp after assembly; on the other hand, it reduces the chance of direct contact between the metal and air or corrosive media when environmental humidity changes.

In the specific process, the molding material is bonded to the metal clamp body through high voltage or thermal fusion, forming a nearly seamless covering structure. Under this structure, the metal body is gradually isolated from the external environment, reducing the probability of oxide formation due to electrochemical reactions. Compared to untreated aluminium pg clamp, this coating treatment maintains a more stable surface condition in complex environments such as humidity and salt spray.

Physical and Chemical Properties of the Molded Layer

• Insulation and Thermal Adaptability: Suitable molding materials possess good insulation properties, maintain stable dielectric strength in electric field environments, and can withstand outdoor temperature fluctuations.

• Weather Resistance: Preferred materials resist UV radiation, rain erosion, and temperature cycling.

• Interfacial Bond Strength: During assembly, the molding material should be firmly bonded to the bimetal pg clamp metal to prevent interfacial delamination or micro-cracks, reducing the possibility of environmental media penetration.

This molding installation method not only requires deep metal coverage but also imposes higher standards on on-site construction operations, such as the accuracy of molded part matching and control of heat treatment parameters.

By rationally molding and coating blackburn parallel groove clamp, a more complete external physical barrier is formed after assembly, reducing the direct reaction between atmospheric oxygen and the metal surface from the source, thereby extending the electrical stability and physical integrity of the component under long-term operating conditions.