The contact materials in low-voltage electrical appliances are mostly silver-based materials, and the extrusion process is often used in production. The extrusion process has two main purposes, one is extrusion molding; the other is to increase material density and strength. The extrusion process determines the surface state, tissue uniformity, and material density of the extruded material. The choice of extrusion process is the basis for determining the stable performance of contact materials. With the continuous improvement of product quality requirements, it is necessary to produce materials with stable and single performance. At the same time, energy saving and consumption reduction do not allow the use of extruded materials to subsequently remove blisters and skin on the material surface. The best solution is to prevent extruded materials from appearing. question.

    The conventional extrusion process of contact materials is prone to the problem that the residual tailings inside the extrusion barrel cannot be removed by conventional processes, causing the residual materials to flow unevenly into the surface of subsequent extrusion materials and below the skin, seriously affecting the performance stability and material quality of the contact materials. Utilization. By adopting the peeling extrusion process, the problem of residues inside the extrusion cylinder being squeezed into the material skin is solved, and the quality stability of the extruded material is improved.

    In conclusion:

    ① The peeling extrusion process is used in the production of silver-based contact materials, which can effectively solve problems such as blistering and inclusions caused by residual materials on the cylinder wall.

    ② The silver-based contact material is reversely extruded and peeled. The thickness of the extruded shell must be 2mm to 4mm to ensure the integrity of the shell.

    ③ Different contact materials have different properties. In order to ensure the integrity of the shell, the thickness of the shell needs to be tested separately according to different materials.

    ④ Only when the thickness of the skin is within a reasonable range can the material performance be improved without reducing the material utilization rate. In specific cases, different materials need to be tested separately for confirmation.

——The content of the article comes from the Internet