Is galvanized or stainless steel required for the insulation wire mesh of power plant generators?
Release Time: 2026-11-03
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In the insulation construction of the generator body in thermal power plants, wire mesh is the core binding and fixing component of soft insulation materials such as ceramic fiber blankets. Many construction and procurement friends often struggle: should galvanized wire mesh or stainless steel wire mesh be used for generator insulation wire mesh? Combining GB50264, GB50126, and DL/T insulation standards for the power industry, we will provide a clear overview of the selection logic for everyone.
Under normal operating conditions, the preferred method for insulation bundling of the generator body is "galvanized hexagonal wire mesh", which has moderate cost and rust prevention performance that meets the requirements of conventional environments. It is the mainstream solution for insulation of power plant generators. However, there is an upper limit to the temperature resistance of the galvanized layer. When the temperature persists for a long time, the unit frequently starts and stops, the surrounding water vapor is high, the desulfurization and denitrification areas are humid and corrosive environments with high chloride ion content, or when the equipment shell itself is made of stainless steel material, it should be upgraded to "304 stainless steel wire mesh" to avoid the high-temperature failure, corrosion and detachment of the galvanized layer, prevent the insulation layer from loosening and falling, and prevent the occurrence of thermal bridges, ensuring long-term operational stability. The generator belongs to continuous vibration equipment. Whether it is galvanized or stainless steel mesh, the bundling spacing should be controlled, and the fixed points should be increased to prevent the insulation layer from sliding and cracking due to vibration.
The insulation fixed wire mesh is only an auxiliary material, and the quality of the insulation main material is the key to determining the insulation effect and service life of the generator. Rosewool Insulation Refractory Co.,Ltd. mainly promotes "ceramic fiber blanket" and "ceramic fiber PLUS blanket", which are suitable for the insulation conditions of the generator set body. Ordinary ceramic fiber blanket has low thermal conductivity and good flexibility, making it easy to fit the irregular curved surface of the generator, and convenient for staggered installation and construction; The upgraded PLUS fiber blanket adopts filament technology, with higher tensile strength, lower slag ball content, stronger wind erosion resistance, and vibration resistance. It is not easy to pulverize and stratify under long-term vibration conditions of the generator, with stable temperature resistance and better heat loss control. It is the preferred insulation main material for maintenance and new construction projects of various large power generation units. Rosewool Insulation Refractory Co.,Ltd. has been deeply involved in thermal insulation support for power plants for many years, and can provide matching galvanized wire mesh and stainless steel wire mesh to achieve one-stop supply of main and auxiliary materials. Our products strictly follow the electrical insulation standards and can provide a complete set of testing reports and qualification information to meet the requirements of power plant warehousing and bidding review; Support on-demand cutting and roll packaging, suitable for on-site segmented construction; Stable supply, responding to urgent orders for power plant repairs and maintenance.
From the experience of implementing insulation projects for numerous power plant turbines, generators, and boilers, we are familiar with the pain points of on-site construction in power plants. We can provide technical disclosure and construction process suggestions to help construction units reasonably match insulation main materials and bundling auxiliary materials, and avoid insulation detachment, overheating, corrosion rework problems caused by material selection errors.
If you need insulation solutions for generators, turbines, denitrification and other areas, sample inspection, and warehouse data docking, please feel free to negotiate cooperation with Rosewool Insulation Refractory Co.,Ltd. to jointly create a stable and reliable thermal insulation system for power plants.
