In the field of electrical equipment protection, sealing strips are the core components to ensure the protection level of electrical cabinets. Their production technology directly determines the waterproof, dustproof and weather-resistant performance of electrical cabinet sealing strips. As a professional manufacturer focusing on the research and development and production of electrical cabinet sealing strips, Hengcheng Factory has established a complete technical system including material science, mold engineering, precision molding and other links through continuous technological iteration.
Material formula is the basis for determining the performance of electrical cabinet sealing strips. We use imported EPDM rubber as the main material, combined with an independently developed anti-aging composite additive system. Through the dynamic vulcanization process, rubber and polypropylene form an interpenetrating network structure, which not only maintains the elastic sealing properties, but also enhances the dimensional stability of the material. In response to special environmental requirements, we have developed composite materials with excellent corrosion resistance to effectively cope with complex working conditions such as high salt spray.
In terms of molding technology, Hengcheng Factory is equipped with a high-precision continuous extrusion production line and adopts cold feed extrusion technology. Through the precisely controlled temperature gradient, the material is fully plasticized during the extrusion process. The mold flow channel is optimized and designed through fluid mechanics simulation, which effectively eliminates the abnormal flow of materials during the extrusion process and realizes the stable control of the cross-sectional dimensions of the electrical cabinet sealing strip. The online monitoring system tracks the size of the electrical cabinet sealing strip in real time, and cooperates with the closed-loop adjustment mechanism to ensure the molding accuracy.
The post-processing process is particularly critical to the long-term performance of the electrical cabinet sealing strip. The continuous vulcanization system adopts a composite process, which uniformly heats the material internally and maintains the vulcanization stability through segmented temperature control. For electrical cabinet sealing strips of different specifications, a gradient cooling program is set, and a multi-stage cooling process is combined to avoid stress accumulation in the electrical cabinet sealing strip. The surface of the finished product is specially treated to significantly improve the activity of the bonding surface and ensure the long-term reliability of the fit with the electrical cabinet.
In the quality control link, Hengcheng Factory has established a full-process testing system. In addition to conventional physical performance tests, a special protection level simulation test platform is configured to strictly verify the entire cabinet after the electrical cabinet sealing strip is assembled. The environmental aging laboratory is equipped with accelerated aging equipment to evaluate the durability of the electrical cabinet sealing strip through long-term light aging tests.
At present, we are committed to upgrading intelligent production, realizing the fine management of process parameters through digital systems, and introducing intelligent detection technology to improve quality control efficiency. In the future, we will continue to explore new composite materials and environmentally friendly production processes to provide better sealing solutions for the field of electrical equipment protection.
