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Date：06-26-2026
Anhuang has rolled out two advanced manufacturing processes-the new integrated injection molding technology and bubble-free casting technology for high-voltage products. Now fully implemented in production, the two technologies underpin the manufacturing of 10kV–40.5kV cable accessories, epoxy bushings, and matching insulating components for voltage transformers.
Conventional injection molding and epoxy casting processes for cable accessories often suffer from common defects including material delamination, inconsistent wall thickness, internal air voids and localized weak insulation. These flaws create hidden insulation risks under long-term high-voltage operation, especially in coastal high-humidity areas and outdoor sites with drastic day-night temperature swings, leading to high defective rates and frequent after-sales issues. To tackle these industry pain points, our R&D team launched targeted research covering four key dimensions: raw material mixing, temperature control procedures, vacuum forming and mold structure design.
Segmented constant-temperature integrated forming molds are deployed for one-step sealed injection molding of silicone rubber raw materials, eliminating secondary bonding and splicing procedures. The finished products feature seamless integral structures with greatly enhanced tear resistance. By precisely regulating injection pressure and vulcanization curves, uniform wall thickness is consistently achieved, effectively eliminating water seepage and cracking at joints and cable terminals. The technology delivers outstanding long-term weather resistance and waterproof sealing performance, ideal for harsh field operating conditions such as photovoltaic power stations, wind farms and municipal power distribution networks.
A fully enclosed vacuum degassing casting production line has been upgraded with optimized epoxy resin formulas and extended vacuum degassing cycles. The entire casting process operates under continuous negative pressure to completely eliminate micro air pores and internal voids inside insulating parts. All finished products pass a full range of rigorous tests including partial discharge testing, voltage withstand testing and thermal cycle aging testing, delivering remarkably consistent insulation performance. This technology eliminates partial discharge failures triggered by internal bubbles in high-voltage epoxy components, enabling full compliance with strict type test standards for power grid projects.
Following the full deployment of the two new processes, the factory rejection rate of cable accessories and epoxy insulating components has been drastically reduced, alongside improved insulation stability and extended service life. We are capable of mass supply for key infrastructure projects, including urban power grid renovation, new substation construction, energy storage and wind power facilities, as well as rail transit systems. Supported by the upgraded processes, we also accept customized insulating parts with non-standard dimensions for special working conditions while shortening overall delivery lead times.
Technological innovation forms the core competitiveness of our products. Moving forward, Anhuang Power will continue to advance process iteration for cable accessory manufacturing, with a primary focus on insulation reliability, environmental adaptability and intelligent manufacturing upgrades. Leveraging state-of-the-art production technologies and premium power equipment components, we provide nationwide power engineering clients with safe, reliable holistic solutions for cable accessories.
Address：No.27, Binhai South 3 road, Yueqing Economic Development Zone, Wenzhou City,Zhejiang Province,China.
