Fretting Wear Characteristics Of Overhead Wires With Protective Wires Suspended By Suspension Clamps

22. After micro-motion wear, the mechanical properties of the conductor will be reduced in the wear area, such as tensile strength and toughness, which is due to material damage and structural changes caused by wear.
Feature explanation: Point out the changes and reasons of the mechanical properties of the conductor. Wear causes material damage and structural changes that reduce the mechanical properties.
23. The surface roughness of the ab cable suspension clamp suspended overhead conductor with protective wire and abc suspension clamp protective wire will show complex changes after micro-motion wear. j hook suspension clamp There are both increased roughness caused by scratches caused by wear and reduced roughness in some areas due to accumulation of wear particles.
Feature explanation: Explains the complex changes in the surface roughness of the suspension clamp for ab cable protective wire and the factors that cause different changes. Scratches and particle accumulation increase and decrease the roughness.
24. Some tiny pits will appear in the micro-motion wear area of ​​the conductor. These pits are caused by local peeling and extrusion of metal materials during wear.
Feature explanation: Describes the characteristics and causes of the pits. The pits are formed by local peeling and extrusion of metal materials.
25. During the fretting wear process of overhead wires with protective wires, the gap between the protective wires and the conductors will change. Sometimes it will decrease due to the filling of debris caused by wear, and sometimes it will increase due to the deformation of the protective wires.
Feature explanation: It explains the change of the gap and the different factors that cause the change. The filling of debris reduces the gap, and the deformation of the protective wire increases the gap.
26. The fretting wear characteristics are reflected in the different changes in the color of the conductor surface at different wear stages. In the early stage, there may be only slight color changes, and obvious oxidation color will appear as the wear intensifies.
Feature explanation: It describes the change characteristics of the conductor surface color with the wear stage. Different oxidation degrees in different stages lead to different color changes.
27. The fretting wear of the overhead wire with protective wires at suspension clamp for abc cable will change the vibration characteristics of the conductor. This is because the wear causes the mass distribution and stiffness distribution of the suspension clamp for lt ab cable conductor to change.
Feature explanation: It points out the changes and reasons of the vibration characteristics of the suspension clamp conductor. Wear changes the mass and stiffness distribution of the conductor, thereby affecting the vibration characteristics.
28. After the conductor is worn by micro-motion, the connection tightness of its outer aluminum strands will decrease. This is because the wear reduces the friction between the aluminum strands and some of the connection structures are destroyed.
Feature explanation: It explains the changes in the connection tightness of the outer aluminum strands and the reasons. Wear reduces friction and destroys the connection structure.
29. When the overhead conductor with protective wire is worn by micro-motion, the corrosion resistance of the protective wire will decrease in the contact area. This is because the wear destroys the protective layer on the surface of the protective wire, making the metal more susceptible to external corrosive media.
Feature explanation: It points out the changes in the corrosion resistance of the protective wire and the reasons. Wear destroys the protective layer and makes the metal susceptible to corrosion.